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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [remote-mips.c] - Diff between revs 827 and 840

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/* Remote debugging interface for MIPS remote debugging protocol.
/* Remote debugging interface for MIPS remote debugging protocol.
 
 
   Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   2003, 2004, 2006, 2007, 2008 Free Software Foundation, Inc.
   2003, 2004, 2006, 2007, 2008 Free Software Foundation, Inc.
 
 
   Contributed by Cygnus Support.  Written by Ian Lance Taylor
   Contributed by Cygnus Support.  Written by Ian Lance Taylor
   <ian@cygnus.com>.
   <ian@cygnus.com>.
 
 
   This file is part of GDB.
   This file is part of GDB.
 
 
   This program is free software; you can redistribute it and/or modify
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   (at your option) any later version.
 
 
   This program is distributed in the hope that it will be useful,
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   GNU General Public License for more details.
 
 
   You should have received a copy of the GNU General Public License
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
#include "defs.h"
#include "defs.h"
#include "inferior.h"
#include "inferior.h"
#include "bfd.h"
#include "bfd.h"
#include "symfile.h"
#include "symfile.h"
#include "gdbcmd.h"
#include "gdbcmd.h"
#include "gdbcore.h"
#include "gdbcore.h"
#include "serial.h"
#include "serial.h"
#include "target.h"
#include "target.h"
#include "exceptions.h"
#include "exceptions.h"
#include "gdb_string.h"
#include "gdb_string.h"
#include "gdb_stat.h"
#include "gdb_stat.h"
#include "regcache.h"
#include "regcache.h"
#include <ctype.h>
#include <ctype.h>
#include "mips-tdep.h"
#include "mips-tdep.h"


 
 
/* Breakpoint types.  Values 0, 1, and 2 must agree with the watch
/* Breakpoint types.  Values 0, 1, and 2 must agree with the watch
   types passed by breakpoint.c to target_insert_watchpoint.
   types passed by breakpoint.c to target_insert_watchpoint.
   Value 3 is our own invention, and is used for ordinary instruction
   Value 3 is our own invention, and is used for ordinary instruction
   breakpoints.  Value 4 is used to mark an unused watchpoint in tables.  */
   breakpoints.  Value 4 is used to mark an unused watchpoint in tables.  */
enum break_type
enum break_type
  {
  {
    BREAK_WRITE,                /* 0 */
    BREAK_WRITE,                /* 0 */
    BREAK_READ,                 /* 1 */
    BREAK_READ,                 /* 1 */
    BREAK_ACCESS,               /* 2 */
    BREAK_ACCESS,               /* 2 */
    BREAK_FETCH,                /* 3 */
    BREAK_FETCH,                /* 3 */
    BREAK_UNUSED                /* 4 */
    BREAK_UNUSED                /* 4 */
  };
  };
 
 
/* Prototypes for local functions.  */
/* Prototypes for local functions.  */
 
 
static int mips_readchar (int timeout);
static int mips_readchar (int timeout);
 
 
static int mips_receive_header (unsigned char *hdr, int *pgarbage,
static int mips_receive_header (unsigned char *hdr, int *pgarbage,
                                int ch, int timeout);
                                int ch, int timeout);
 
 
static int mips_receive_trailer (unsigned char *trlr, int *pgarbage,
static int mips_receive_trailer (unsigned char *trlr, int *pgarbage,
                                 int *pch, int timeout);
                                 int *pch, int timeout);
 
 
static int mips_cksum (const unsigned char *hdr,
static int mips_cksum (const unsigned char *hdr,
                       const unsigned char *data, int len);
                       const unsigned char *data, int len);
 
 
static void mips_send_packet (const char *s, int get_ack);
static void mips_send_packet (const char *s, int get_ack);
 
 
static void mips_send_command (const char *cmd, int prompt);
static void mips_send_command (const char *cmd, int prompt);
 
 
static int mips_receive_packet (char *buff, int throw_error, int timeout);
static int mips_receive_packet (char *buff, int throw_error, int timeout);
 
 
static ULONGEST mips_request (int cmd, ULONGEST addr, ULONGEST data,
static ULONGEST mips_request (int cmd, ULONGEST addr, ULONGEST data,
                              int *perr, int timeout, char *buff);
                              int *perr, int timeout, char *buff);
 
 
static void mips_initialize (void);
static void mips_initialize (void);
 
 
static void mips_open (char *name, int from_tty);
static void mips_open (char *name, int from_tty);
 
 
static void pmon_open (char *name, int from_tty);
static void pmon_open (char *name, int from_tty);
 
 
static void ddb_open (char *name, int from_tty);
static void ddb_open (char *name, int from_tty);
 
 
static void lsi_open (char *name, int from_tty);
static void lsi_open (char *name, int from_tty);
 
 
static void mips_close (int quitting);
static void mips_close (int quitting);
 
 
static void mips_detach (char *args, int from_tty);
static void mips_detach (char *args, int from_tty);
 
 
static void mips_resume (ptid_t ptid, int step,
static void mips_resume (ptid_t ptid, int step,
                         enum target_signal siggnal);
                         enum target_signal siggnal);
 
 
static ptid_t mips_wait (ptid_t ptid,
static ptid_t mips_wait (ptid_t ptid,
                               struct target_waitstatus *status);
                               struct target_waitstatus *status);
 
 
static int mips_map_regno (int regno);
static int mips_map_regno (int regno);
 
 
static void mips_fetch_registers (struct regcache *regcache, int regno);
static void mips_fetch_registers (struct regcache *regcache, int regno);
 
 
static void mips_prepare_to_store (struct regcache *regcache);
static void mips_prepare_to_store (struct regcache *regcache);
 
 
static void mips_store_registers (struct regcache *regcache, int regno);
static void mips_store_registers (struct regcache *regcache, int regno);
 
 
static unsigned int mips_fetch_word (CORE_ADDR addr);
static unsigned int mips_fetch_word (CORE_ADDR addr);
 
 
static int mips_store_word (CORE_ADDR addr, unsigned int value,
static int mips_store_word (CORE_ADDR addr, unsigned int value,
                            char *old_contents);
                            char *old_contents);
 
 
static int mips_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len,
static int mips_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len,
                             int write,
                             int write,
                             struct mem_attrib *attrib,
                             struct mem_attrib *attrib,
                             struct target_ops *target);
                             struct target_ops *target);
 
 
static void mips_files_info (struct target_ops *ignore);
static void mips_files_info (struct target_ops *ignore);
 
 
static void mips_mourn_inferior (void);
static void mips_mourn_inferior (void);
 
 
static int pmon_makeb64 (unsigned long v, char *p, int n, int *chksum);
static int pmon_makeb64 (unsigned long v, char *p, int n, int *chksum);
 
 
static int pmon_zeroset (int recsize, char **buff, int *amount,
static int pmon_zeroset (int recsize, char **buff, int *amount,
                         unsigned int *chksum);
                         unsigned int *chksum);
 
 
static int pmon_checkset (int recsize, char **buff, int *value);
static int pmon_checkset (int recsize, char **buff, int *value);
 
 
static void pmon_make_fastrec (char **outbuf, unsigned char *inbuf,
static void pmon_make_fastrec (char **outbuf, unsigned char *inbuf,
                               int *inptr, int inamount, int *recsize,
                               int *inptr, int inamount, int *recsize,
                               unsigned int *csum, unsigned int *zerofill);
                               unsigned int *csum, unsigned int *zerofill);
 
 
static int pmon_check_ack (char *mesg);
static int pmon_check_ack (char *mesg);
 
 
static void pmon_start_download (void);
static void pmon_start_download (void);
 
 
static void pmon_end_download (int final, int bintotal);
static void pmon_end_download (int final, int bintotal);
 
 
static void pmon_download (char *buffer, int length);
static void pmon_download (char *buffer, int length);
 
 
static void pmon_load_fast (char *file);
static void pmon_load_fast (char *file);
 
 
static void mips_load (char *file, int from_tty);
static void mips_load (char *file, int from_tty);
 
 
static int mips_make_srec (char *buffer, int type, CORE_ADDR memaddr,
static int mips_make_srec (char *buffer, int type, CORE_ADDR memaddr,
                           unsigned char *myaddr, int len);
                           unsigned char *myaddr, int len);
 
 
static int mips_set_breakpoint (CORE_ADDR addr, int len, enum break_type type);
static int mips_set_breakpoint (CORE_ADDR addr, int len, enum break_type type);
 
 
static int mips_clear_breakpoint (CORE_ADDR addr, int len,
static int mips_clear_breakpoint (CORE_ADDR addr, int len,
                                  enum break_type type);
                                  enum break_type type);
 
 
static int mips_common_breakpoint (int set, CORE_ADDR addr, int len,
static int mips_common_breakpoint (int set, CORE_ADDR addr, int len,
                                   enum break_type type);
                                   enum break_type type);
 
 
/* Forward declarations.  */
/* Forward declarations.  */
extern struct target_ops mips_ops;
extern struct target_ops mips_ops;
extern struct target_ops pmon_ops;
extern struct target_ops pmon_ops;
extern struct target_ops ddb_ops;
extern struct target_ops ddb_ops;
/* *INDENT-OFF* */
/* *INDENT-OFF* */
/* The MIPS remote debugging interface is built on top of a simple
/* The MIPS remote debugging interface is built on top of a simple
   packet protocol.  Each packet is organized as follows:
   packet protocol.  Each packet is organized as follows:
 
 
   SYN  The first character is always a SYN (ASCII 026, or ^V).  SYN
   SYN  The first character is always a SYN (ASCII 026, or ^V).  SYN
   may not appear anywhere else in the packet.  Any time a SYN is
   may not appear anywhere else in the packet.  Any time a SYN is
   seen, a new packet should be assumed to have begun.
   seen, a new packet should be assumed to have begun.
 
 
   TYPE_LEN
   TYPE_LEN
   This byte contains the upper five bits of the logical length
   This byte contains the upper five bits of the logical length
   of the data section, plus a single bit indicating whether this
   of the data section, plus a single bit indicating whether this
   is a data packet or an acknowledgement.  The documentation
   is a data packet or an acknowledgement.  The documentation
   indicates that this bit is 1 for a data packet, but the actual
   indicates that this bit is 1 for a data packet, but the actual
   board uses 1 for an acknowledgement.  The value of the byte is
   board uses 1 for an acknowledgement.  The value of the byte is
   0x40 + (ack ? 0x20 : 0) + (len >> 6)
   0x40 + (ack ? 0x20 : 0) + (len >> 6)
   (we always have 0 <= len < 1024).  Acknowledgement packets do
   (we always have 0 <= len < 1024).  Acknowledgement packets do
   not carry data, and must have a data length of 0.
   not carry data, and must have a data length of 0.
 
 
   LEN1 This byte contains the lower six bits of the logical length of
   LEN1 This byte contains the lower six bits of the logical length of
   the data section.  The value is
   the data section.  The value is
   0x40 + (len & 0x3f)
   0x40 + (len & 0x3f)
 
 
   SEQ  This byte contains the six bit sequence number of the packet.
   SEQ  This byte contains the six bit sequence number of the packet.
   The value is
   The value is
   0x40 + seq
   0x40 + seq
   An acknowlegment packet contains the sequence number of the
   An acknowlegment packet contains the sequence number of the
   packet being acknowledged plus 1 modulo 64.  Data packets are
   packet being acknowledged plus 1 modulo 64.  Data packets are
   transmitted in sequence.  There may only be one outstanding
   transmitted in sequence.  There may only be one outstanding
   unacknowledged data packet at a time.  The sequence numbers
   unacknowledged data packet at a time.  The sequence numbers
   are independent in each direction.  If an acknowledgement for
   are independent in each direction.  If an acknowledgement for
   the previous packet is received (i.e., an acknowledgement with
   the previous packet is received (i.e., an acknowledgement with
   the sequence number of the packet just sent) the packet just
   the sequence number of the packet just sent) the packet just
   sent should be retransmitted.  If no acknowledgement is
   sent should be retransmitted.  If no acknowledgement is
   received within a timeout period, the packet should be
   received within a timeout period, the packet should be
   retransmitted.  This has an unfortunate failure condition on a
   retransmitted.  This has an unfortunate failure condition on a
   high-latency line, as a delayed acknowledgement may lead to an
   high-latency line, as a delayed acknowledgement may lead to an
   endless series of duplicate packets.
   endless series of duplicate packets.
 
 
   DATA The actual data bytes follow.  The following characters are
   DATA The actual data bytes follow.  The following characters are
   escaped inline with DLE (ASCII 020, or ^P):
   escaped inline with DLE (ASCII 020, or ^P):
   SYN (026)    DLE S
   SYN (026)    DLE S
   DLE (020)    DLE D
   DLE (020)    DLE D
   ^C  (003)    DLE C
   ^C  (003)    DLE C
   ^S  (023)    DLE s
   ^S  (023)    DLE s
   ^Q  (021)    DLE q
   ^Q  (021)    DLE q
   The additional DLE characters are not counted in the logical
   The additional DLE characters are not counted in the logical
   length stored in the TYPE_LEN and LEN1 bytes.
   length stored in the TYPE_LEN and LEN1 bytes.
 
 
   CSUM1
   CSUM1
   CSUM2
   CSUM2
   CSUM3
   CSUM3
   These bytes contain an 18 bit checksum of the complete
   These bytes contain an 18 bit checksum of the complete
   contents of the packet excluding the SEQ byte and the
   contents of the packet excluding the SEQ byte and the
   CSUM[123] bytes.  The checksum is simply the twos complement
   CSUM[123] bytes.  The checksum is simply the twos complement
   addition of all the bytes treated as unsigned characters.  The
   addition of all the bytes treated as unsigned characters.  The
   values of the checksum bytes are:
   values of the checksum bytes are:
   CSUM1: 0x40 + ((cksum >> 12) & 0x3f)
   CSUM1: 0x40 + ((cksum >> 12) & 0x3f)
   CSUM2: 0x40 + ((cksum >> 6) & 0x3f)
   CSUM2: 0x40 + ((cksum >> 6) & 0x3f)
   CSUM3: 0x40 + (cksum & 0x3f)
   CSUM3: 0x40 + (cksum & 0x3f)
 
 
   It happens that the MIPS remote debugging protocol always
   It happens that the MIPS remote debugging protocol always
   communicates with ASCII strings.  Because of this, this
   communicates with ASCII strings.  Because of this, this
   implementation doesn't bother to handle the DLE quoting mechanism,
   implementation doesn't bother to handle the DLE quoting mechanism,
   since it will never be required.  */
   since it will never be required.  */
/* *INDENT-ON* */
/* *INDENT-ON* */
 
 
 
 
/* The SYN character which starts each packet.  */
/* The SYN character which starts each packet.  */
#define SYN '\026'
#define SYN '\026'
 
 
/* The 0x40 used to offset each packet (this value ensures that all of
/* The 0x40 used to offset each packet (this value ensures that all of
   the header and trailer bytes, other than SYN, are printable ASCII
   the header and trailer bytes, other than SYN, are printable ASCII
   characters).  */
   characters).  */
#define HDR_OFFSET 0x40
#define HDR_OFFSET 0x40
 
 
/* The indices of the bytes in the packet header.  */
/* The indices of the bytes in the packet header.  */
#define HDR_INDX_SYN 0
#define HDR_INDX_SYN 0
#define HDR_INDX_TYPE_LEN 1
#define HDR_INDX_TYPE_LEN 1
#define HDR_INDX_LEN1 2
#define HDR_INDX_LEN1 2
#define HDR_INDX_SEQ 3
#define HDR_INDX_SEQ 3
#define HDR_LENGTH 4
#define HDR_LENGTH 4
 
 
/* The data/ack bit in the TYPE_LEN header byte.  */
/* The data/ack bit in the TYPE_LEN header byte.  */
#define TYPE_LEN_DA_BIT 0x20
#define TYPE_LEN_DA_BIT 0x20
#define TYPE_LEN_DATA 0
#define TYPE_LEN_DATA 0
#define TYPE_LEN_ACK TYPE_LEN_DA_BIT
#define TYPE_LEN_ACK TYPE_LEN_DA_BIT
 
 
/* How to compute the header bytes.  */
/* How to compute the header bytes.  */
#define HDR_SET_SYN(data, len, seq) (SYN)
#define HDR_SET_SYN(data, len, seq) (SYN)
#define HDR_SET_TYPE_LEN(data, len, seq) \
#define HDR_SET_TYPE_LEN(data, len, seq) \
  (HDR_OFFSET \
  (HDR_OFFSET \
   + ((data) ? TYPE_LEN_DATA : TYPE_LEN_ACK) \
   + ((data) ? TYPE_LEN_DATA : TYPE_LEN_ACK) \
   + (((len) >> 6) & 0x1f))
   + (((len) >> 6) & 0x1f))
#define HDR_SET_LEN1(data, len, seq) (HDR_OFFSET + ((len) & 0x3f))
#define HDR_SET_LEN1(data, len, seq) (HDR_OFFSET + ((len) & 0x3f))
#define HDR_SET_SEQ(data, len, seq) (HDR_OFFSET + (seq))
#define HDR_SET_SEQ(data, len, seq) (HDR_OFFSET + (seq))
 
 
/* Check that a header byte is reasonable.  */
/* Check that a header byte is reasonable.  */
#define HDR_CHECK(ch) (((ch) & HDR_OFFSET) == HDR_OFFSET)
#define HDR_CHECK(ch) (((ch) & HDR_OFFSET) == HDR_OFFSET)
 
 
/* Get data from the header.  These macros evaluate their argument
/* Get data from the header.  These macros evaluate their argument
   multiple times.  */
   multiple times.  */
#define HDR_IS_DATA(hdr) \
#define HDR_IS_DATA(hdr) \
  (((hdr)[HDR_INDX_TYPE_LEN] & TYPE_LEN_DA_BIT) == TYPE_LEN_DATA)
  (((hdr)[HDR_INDX_TYPE_LEN] & TYPE_LEN_DA_BIT) == TYPE_LEN_DATA)
#define HDR_GET_LEN(hdr) \
#define HDR_GET_LEN(hdr) \
  ((((hdr)[HDR_INDX_TYPE_LEN] & 0x1f) << 6) + (((hdr)[HDR_INDX_LEN1] & 0x3f)))
  ((((hdr)[HDR_INDX_TYPE_LEN] & 0x1f) << 6) + (((hdr)[HDR_INDX_LEN1] & 0x3f)))
#define HDR_GET_SEQ(hdr) ((unsigned int)(hdr)[HDR_INDX_SEQ] & 0x3f)
#define HDR_GET_SEQ(hdr) ((unsigned int)(hdr)[HDR_INDX_SEQ] & 0x3f)
 
 
/* The maximum data length.  */
/* The maximum data length.  */
#define DATA_MAXLEN 1023
#define DATA_MAXLEN 1023
 
 
/* The trailer offset.  */
/* The trailer offset.  */
#define TRLR_OFFSET HDR_OFFSET
#define TRLR_OFFSET HDR_OFFSET
 
 
/* The indices of the bytes in the packet trailer.  */
/* The indices of the bytes in the packet trailer.  */
#define TRLR_INDX_CSUM1 0
#define TRLR_INDX_CSUM1 0
#define TRLR_INDX_CSUM2 1
#define TRLR_INDX_CSUM2 1
#define TRLR_INDX_CSUM3 2
#define TRLR_INDX_CSUM3 2
#define TRLR_LENGTH 3
#define TRLR_LENGTH 3
 
 
/* How to compute the trailer bytes.  */
/* How to compute the trailer bytes.  */
#define TRLR_SET_CSUM1(cksum) (TRLR_OFFSET + (((cksum) >> 12) & 0x3f))
#define TRLR_SET_CSUM1(cksum) (TRLR_OFFSET + (((cksum) >> 12) & 0x3f))
#define TRLR_SET_CSUM2(cksum) (TRLR_OFFSET + (((cksum) >>  6) & 0x3f))
#define TRLR_SET_CSUM2(cksum) (TRLR_OFFSET + (((cksum) >>  6) & 0x3f))
#define TRLR_SET_CSUM3(cksum) (TRLR_OFFSET + (((cksum)      ) & 0x3f))
#define TRLR_SET_CSUM3(cksum) (TRLR_OFFSET + (((cksum)      ) & 0x3f))
 
 
/* Check that a trailer byte is reasonable.  */
/* Check that a trailer byte is reasonable.  */
#define TRLR_CHECK(ch) (((ch) & TRLR_OFFSET) == TRLR_OFFSET)
#define TRLR_CHECK(ch) (((ch) & TRLR_OFFSET) == TRLR_OFFSET)
 
 
/* Get data from the trailer.  This evaluates its argument multiple
/* Get data from the trailer.  This evaluates its argument multiple
   times.  */
   times.  */
#define TRLR_GET_CKSUM(trlr) \
#define TRLR_GET_CKSUM(trlr) \
  ((((trlr)[TRLR_INDX_CSUM1] & 0x3f) << 12) \
  ((((trlr)[TRLR_INDX_CSUM1] & 0x3f) << 12) \
   + (((trlr)[TRLR_INDX_CSUM2] & 0x3f) <<  6) \
   + (((trlr)[TRLR_INDX_CSUM2] & 0x3f) <<  6) \
   + ((trlr)[TRLR_INDX_CSUM3] & 0x3f))
   + ((trlr)[TRLR_INDX_CSUM3] & 0x3f))
 
 
/* The sequence number modulos.  */
/* The sequence number modulos.  */
#define SEQ_MODULOS (64)
#define SEQ_MODULOS (64)
 
 
/* PMON commands to load from the serial port or UDP socket.  */
/* PMON commands to load from the serial port or UDP socket.  */
#define LOAD_CMD        "load -b -s tty0\r"
#define LOAD_CMD        "load -b -s tty0\r"
#define LOAD_CMD_UDP    "load -b -s udp\r"
#define LOAD_CMD_UDP    "load -b -s udp\r"
 
 
/* The target vectors for the four different remote MIPS targets.
/* The target vectors for the four different remote MIPS targets.
   These are initialized with code in _initialize_remote_mips instead
   These are initialized with code in _initialize_remote_mips instead
   of static initializers, to make it easier to extend the target_ops
   of static initializers, to make it easier to extend the target_ops
   vector later.  */
   vector later.  */
struct target_ops mips_ops, pmon_ops, ddb_ops, lsi_ops;
struct target_ops mips_ops, pmon_ops, ddb_ops, lsi_ops;
 
 
enum mips_monitor_type
enum mips_monitor_type
  {
  {
    /* IDT/SIM monitor being used: */
    /* IDT/SIM monitor being used: */
    MON_IDT,
    MON_IDT,
    /* PMON monitor being used: */
    /* PMON monitor being used: */
    MON_PMON,                   /* 3.0.83 [COGENT,EB,FP,NET] Algorithmics Ltd. Nov  9 1995 17:19:50 */
    MON_PMON,                   /* 3.0.83 [COGENT,EB,FP,NET] Algorithmics Ltd. Nov  9 1995 17:19:50 */
    MON_DDB,                    /* 2.7.473 [DDBVR4300,EL,FP,NET] Risq Modular Systems,  Thu Jun 6 09:28:40 PDT 1996 */
    MON_DDB,                    /* 2.7.473 [DDBVR4300,EL,FP,NET] Risq Modular Systems,  Thu Jun 6 09:28:40 PDT 1996 */
    MON_LSI,                    /* 4.3.12 [EB,FP], LSI LOGIC Corp. Tue Feb 25 13:22:14 1997 */
    MON_LSI,                    /* 4.3.12 [EB,FP], LSI LOGIC Corp. Tue Feb 25 13:22:14 1997 */
    /* Last and unused value, for sizing vectors, etc. */
    /* Last and unused value, for sizing vectors, etc. */
    MON_LAST
    MON_LAST
  };
  };
static enum mips_monitor_type mips_monitor = MON_LAST;
static enum mips_monitor_type mips_monitor = MON_LAST;
 
 
/* The monitor prompt text.  If the user sets the PMON prompt
/* The monitor prompt text.  If the user sets the PMON prompt
   to some new value, the GDB `set monitor-prompt' command must also
   to some new value, the GDB `set monitor-prompt' command must also
   be used to inform GDB about the expected prompt.  Otherwise, GDB
   be used to inform GDB about the expected prompt.  Otherwise, GDB
   will not be able to connect to PMON in mips_initialize().
   will not be able to connect to PMON in mips_initialize().
   If the `set monitor-prompt' command is not used, the expected
   If the `set monitor-prompt' command is not used, the expected
   default prompt will be set according the target:
   default prompt will be set according the target:
   target               prompt
   target               prompt
   -----                -----
   -----                -----
   pmon         PMON>
   pmon         PMON>
   ddb          NEC010>
   ddb          NEC010>
   lsi          PMON>
   lsi          PMON>
 */
 */
static char *mips_monitor_prompt;
static char *mips_monitor_prompt;
 
 
/* Set to 1 if the target is open.  */
/* Set to 1 if the target is open.  */
static int mips_is_open;
static int mips_is_open;
 
 
/* Currently active target description (if mips_is_open == 1) */
/* Currently active target description (if mips_is_open == 1) */
static struct target_ops *current_ops;
static struct target_ops *current_ops;
 
 
/* Set to 1 while the connection is being initialized.  */
/* Set to 1 while the connection is being initialized.  */
static int mips_initializing;
static int mips_initializing;
 
 
/* Set to 1 while the connection is being brought down.  */
/* Set to 1 while the connection is being brought down.  */
static int mips_exiting;
static int mips_exiting;
 
 
/* The next sequence number to send.  */
/* The next sequence number to send.  */
static unsigned int mips_send_seq;
static unsigned int mips_send_seq;
 
 
/* The next sequence number we expect to receive.  */
/* The next sequence number we expect to receive.  */
static unsigned int mips_receive_seq;
static unsigned int mips_receive_seq;
 
 
/* The time to wait before retransmitting a packet, in seconds.  */
/* The time to wait before retransmitting a packet, in seconds.  */
static int mips_retransmit_wait = 3;
static int mips_retransmit_wait = 3;
 
 
/* The number of times to try retransmitting a packet before giving up.  */
/* The number of times to try retransmitting a packet before giving up.  */
static int mips_send_retries = 10;
static int mips_send_retries = 10;
 
 
/* The number of garbage characters to accept when looking for an
/* The number of garbage characters to accept when looking for an
   SYN for the next packet.  */
   SYN for the next packet.  */
static int mips_syn_garbage = 10;
static int mips_syn_garbage = 10;
 
 
/* The time to wait for a packet, in seconds.  */
/* The time to wait for a packet, in seconds.  */
static int mips_receive_wait = 5;
static int mips_receive_wait = 5;
 
 
/* Set if we have sent a packet to the board but have not yet received
/* Set if we have sent a packet to the board but have not yet received
   a reply.  */
   a reply.  */
static int mips_need_reply = 0;
static int mips_need_reply = 0;
 
 
/* Handle used to access serial I/O stream.  */
/* Handle used to access serial I/O stream.  */
static struct serial *mips_desc;
static struct serial *mips_desc;
 
 
/* UDP handle used to download files to target.  */
/* UDP handle used to download files to target.  */
static struct serial *udp_desc;
static struct serial *udp_desc;
static int udp_in_use;
static int udp_in_use;
 
 
/* TFTP filename used to download files to DDB board, in the form
/* TFTP filename used to download files to DDB board, in the form
   host:filename.  */
   host:filename.  */
static char *tftp_name;         /* host:filename */
static char *tftp_name;         /* host:filename */
static char *tftp_localname;    /* filename portion of above */
static char *tftp_localname;    /* filename portion of above */
static int tftp_in_use;
static int tftp_in_use;
static FILE *tftp_file;
static FILE *tftp_file;
 
 
/* Counts the number of times the user tried to interrupt the target (usually
/* Counts the number of times the user tried to interrupt the target (usually
   via ^C.  */
   via ^C.  */
static int interrupt_count;
static int interrupt_count;
 
 
/* If non-zero, means that the target is running. */
/* If non-zero, means that the target is running. */
static int mips_wait_flag = 0;
static int mips_wait_flag = 0;
 
 
/* If non-zero, monitor supports breakpoint commands. */
/* If non-zero, monitor supports breakpoint commands. */
static int monitor_supports_breakpoints = 0;
static int monitor_supports_breakpoints = 0;
 
 
/* Data cache header.  */
/* Data cache header.  */
 
 
#if 0                           /* not used (yet?) */
#if 0                           /* not used (yet?) */
static DCACHE *mips_dcache;
static DCACHE *mips_dcache;
#endif
#endif
 
 
/* Non-zero means that we've just hit a read or write watchpoint */
/* Non-zero means that we've just hit a read or write watchpoint */
static int hit_watchpoint;
static int hit_watchpoint;
 
 
/* Table of breakpoints/watchpoints (used only on LSI PMON target).
/* Table of breakpoints/watchpoints (used only on LSI PMON target).
   The table is indexed by a breakpoint number, which is an integer
   The table is indexed by a breakpoint number, which is an integer
   from 0 to 255 returned by the LSI PMON when a breakpoint is set.
   from 0 to 255 returned by the LSI PMON when a breakpoint is set.
 */
 */
#define MAX_LSI_BREAKPOINTS 256
#define MAX_LSI_BREAKPOINTS 256
struct lsi_breakpoint_info
struct lsi_breakpoint_info
  {
  {
    enum break_type type;       /* type of breakpoint */
    enum break_type type;       /* type of breakpoint */
    CORE_ADDR addr;             /* address of breakpoint */
    CORE_ADDR addr;             /* address of breakpoint */
    int len;                    /* length of region being watched */
    int len;                    /* length of region being watched */
    unsigned long value;        /* value to watch */
    unsigned long value;        /* value to watch */
  }
  }
lsi_breakpoints[MAX_LSI_BREAKPOINTS];
lsi_breakpoints[MAX_LSI_BREAKPOINTS];
 
 
/* Error/warning codes returned by LSI PMON for breakpoint commands.
/* Error/warning codes returned by LSI PMON for breakpoint commands.
   Warning values may be ORed together; error values may not.  */
   Warning values may be ORed together; error values may not.  */
#define W_WARN  0x100           /* This bit is set if the error code is a warning */
#define W_WARN  0x100           /* This bit is set if the error code is a warning */
#define W_MSK   0x101           /* warning: Range feature is supported via mask */
#define W_MSK   0x101           /* warning: Range feature is supported via mask */
#define W_VAL   0x102           /* warning: Value check is not supported in hardware */
#define W_VAL   0x102           /* warning: Value check is not supported in hardware */
#define W_QAL   0x104           /* warning: Requested qualifiers are not supported in hardware */
#define W_QAL   0x104           /* warning: Requested qualifiers are not supported in hardware */
 
 
#define E_ERR   0x200           /* This bit is set if the error code is an error */
#define E_ERR   0x200           /* This bit is set if the error code is an error */
#define E_BPT   0x200           /* error: No such breakpoint number */
#define E_BPT   0x200           /* error: No such breakpoint number */
#define E_RGE   0x201           /* error: Range is not supported */
#define E_RGE   0x201           /* error: Range is not supported */
#define E_QAL   0x202           /* error: The requested qualifiers can not be used */
#define E_QAL   0x202           /* error: The requested qualifiers can not be used */
#define E_OUT   0x203           /* error: Out of hardware resources */
#define E_OUT   0x203           /* error: Out of hardware resources */
#define E_NON   0x204           /* error: Hardware breakpoint not supported */
#define E_NON   0x204           /* error: Hardware breakpoint not supported */
 
 
struct lsi_error
struct lsi_error
  {
  {
    int code;                   /* error code */
    int code;                   /* error code */
    char *string;               /* string associated with this code */
    char *string;               /* string associated with this code */
  };
  };
 
 
struct lsi_error lsi_warning_table[] =
struct lsi_error lsi_warning_table[] =
{
{
  {W_MSK, "Range feature is supported via mask"},
  {W_MSK, "Range feature is supported via mask"},
  {W_VAL, "Value check is not supported in hardware"},
  {W_VAL, "Value check is not supported in hardware"},
  {W_QAL, "Requested qualifiers are not supported in hardware"},
  {W_QAL, "Requested qualifiers are not supported in hardware"},
  {0, NULL}
  {0, NULL}
};
};
 
 
struct lsi_error lsi_error_table[] =
struct lsi_error lsi_error_table[] =
{
{
  {E_BPT, "No such breakpoint number"},
  {E_BPT, "No such breakpoint number"},
  {E_RGE, "Range is not supported"},
  {E_RGE, "Range is not supported"},
  {E_QAL, "The requested qualifiers can not be used"},
  {E_QAL, "The requested qualifiers can not be used"},
  {E_OUT, "Out of hardware resources"},
  {E_OUT, "Out of hardware resources"},
  {E_NON, "Hardware breakpoint not supported"},
  {E_NON, "Hardware breakpoint not supported"},
  {0, NULL}
  {0, NULL}
};
};
 
 
/* Set to 1 with the 'set monitor-warnings' command to enable printing
/* Set to 1 with the 'set monitor-warnings' command to enable printing
   of warnings returned by PMON when hardware breakpoints are used.  */
   of warnings returned by PMON when hardware breakpoints are used.  */
static int monitor_warnings;
static int monitor_warnings;
 
 
 
 
static void
static void
close_ports (void)
close_ports (void)
{
{
  mips_is_open = 0;
  mips_is_open = 0;
  serial_close (mips_desc);
  serial_close (mips_desc);
 
 
  if (udp_in_use)
  if (udp_in_use)
    {
    {
      serial_close (udp_desc);
      serial_close (udp_desc);
      udp_in_use = 0;
      udp_in_use = 0;
    }
    }
  tftp_in_use = 0;
  tftp_in_use = 0;
}
}
 
 
/* Handle low-level error that we can't recover from.  Note that just
/* Handle low-level error that we can't recover from.  Note that just
   error()ing out from target_wait or some such low-level place will cause
   error()ing out from target_wait or some such low-level place will cause
   all hell to break loose--the rest of GDB will tend to get left in an
   all hell to break loose--the rest of GDB will tend to get left in an
   inconsistent state.  */
   inconsistent state.  */
 
 
static NORETURN void
static NORETURN void
mips_error (char *string,...)
mips_error (char *string,...)
{
{
  va_list args;
  va_list args;
 
 
  va_start (args, string);
  va_start (args, string);
 
 
  target_terminal_ours ();
  target_terminal_ours ();
  wrap_here ("");               /* Force out any buffered output */
  wrap_here ("");               /* Force out any buffered output */
  gdb_flush (gdb_stdout);
  gdb_flush (gdb_stdout);
  if (error_pre_print)
  if (error_pre_print)
    fputs_filtered (error_pre_print, gdb_stderr);
    fputs_filtered (error_pre_print, gdb_stderr);
  vfprintf_filtered (gdb_stderr, string, args);
  vfprintf_filtered (gdb_stderr, string, args);
  fprintf_filtered (gdb_stderr, "\n");
  fprintf_filtered (gdb_stderr, "\n");
  va_end (args);
  va_end (args);
  gdb_flush (gdb_stderr);
  gdb_flush (gdb_stderr);
 
 
  /* Clean up in such a way that mips_close won't try to talk to the
  /* Clean up in such a way that mips_close won't try to talk to the
     board (it almost surely won't work since we weren't able to talk to
     board (it almost surely won't work since we weren't able to talk to
     it).  */
     it).  */
  close_ports ();
  close_ports ();
 
 
  printf_unfiltered ("Ending remote MIPS debugging.\n");
  printf_unfiltered ("Ending remote MIPS debugging.\n");
  target_mourn_inferior ();
  target_mourn_inferior ();
 
 
  deprecated_throw_reason (RETURN_ERROR);
  deprecated_throw_reason (RETURN_ERROR);
}
}
 
 
/* putc_readable - print a character, displaying non-printable chars in
/* putc_readable - print a character, displaying non-printable chars in
   ^x notation or in hex.  */
   ^x notation or in hex.  */
 
 
static void
static void
fputc_readable (int ch, struct ui_file *file)
fputc_readable (int ch, struct ui_file *file)
{
{
  if (ch == '\n')
  if (ch == '\n')
    fputc_unfiltered ('\n', file);
    fputc_unfiltered ('\n', file);
  else if (ch == '\r')
  else if (ch == '\r')
    fprintf_unfiltered (file, "\\r");
    fprintf_unfiltered (file, "\\r");
  else if (ch < 0x20)           /* ASCII control character */
  else if (ch < 0x20)           /* ASCII control character */
    fprintf_unfiltered (file, "^%c", ch + '@');
    fprintf_unfiltered (file, "^%c", ch + '@');
  else if (ch >= 0x7f)          /* non-ASCII characters (rubout or greater) */
  else if (ch >= 0x7f)          /* non-ASCII characters (rubout or greater) */
    fprintf_unfiltered (file, "[%02x]", ch & 0xff);
    fprintf_unfiltered (file, "[%02x]", ch & 0xff);
  else
  else
    fputc_unfiltered (ch, file);
    fputc_unfiltered (ch, file);
}
}
 
 
 
 
/* puts_readable - print a string, displaying non-printable chars in
/* puts_readable - print a string, displaying non-printable chars in
   ^x notation or in hex.  */
   ^x notation or in hex.  */
 
 
static void
static void
fputs_readable (const char *string, struct ui_file *file)
fputs_readable (const char *string, struct ui_file *file)
{
{
  int c;
  int c;
 
 
  while ((c = *string++) != '\0')
  while ((c = *string++) != '\0')
    fputc_readable (c, file);
    fputc_readable (c, file);
}
}
 
 
 
 
/* Wait until STRING shows up in mips_desc.  Returns 1 if successful, else 0 if
/* Wait until STRING shows up in mips_desc.  Returns 1 if successful, else 0 if
   timed out.  TIMEOUT specifies timeout value in seconds.
   timed out.  TIMEOUT specifies timeout value in seconds.
 */
 */
 
 
static int
static int
mips_expect_timeout (const char *string, int timeout)
mips_expect_timeout (const char *string, int timeout)
{
{
  const char *p = string;
  const char *p = string;
 
 
  if (remote_debug)
  if (remote_debug)
    {
    {
      fprintf_unfiltered (gdb_stdlog, "Expected \"");
      fprintf_unfiltered (gdb_stdlog, "Expected \"");
      fputs_readable (string, gdb_stdlog);
      fputs_readable (string, gdb_stdlog);
      fprintf_unfiltered (gdb_stdlog, "\", got \"");
      fprintf_unfiltered (gdb_stdlog, "\", got \"");
    }
    }
 
 
  immediate_quit++;
  immediate_quit++;
  while (1)
  while (1)
    {
    {
      int c;
      int c;
 
 
      /* Must use serial_readchar() here cuz mips_readchar would get
      /* Must use serial_readchar() here cuz mips_readchar would get
         confused if we were waiting for the mips_monitor_prompt... */
         confused if we were waiting for the mips_monitor_prompt... */
 
 
      c = serial_readchar (mips_desc, timeout);
      c = serial_readchar (mips_desc, timeout);
 
 
      if (c == SERIAL_TIMEOUT)
      if (c == SERIAL_TIMEOUT)
        {
        {
          if (remote_debug)
          if (remote_debug)
            fprintf_unfiltered (gdb_stdlog, "\": FAIL\n");
            fprintf_unfiltered (gdb_stdlog, "\": FAIL\n");
          return 0;
          return 0;
        }
        }
 
 
      if (remote_debug)
      if (remote_debug)
        fputc_readable (c, gdb_stdlog);
        fputc_readable (c, gdb_stdlog);
 
 
      if (c == *p++)
      if (c == *p++)
        {
        {
          if (*p == '\0')
          if (*p == '\0')
            {
            {
              immediate_quit--;
              immediate_quit--;
              if (remote_debug)
              if (remote_debug)
                fprintf_unfiltered (gdb_stdlog, "\": OK\n");
                fprintf_unfiltered (gdb_stdlog, "\": OK\n");
              return 1;
              return 1;
            }
            }
        }
        }
      else
      else
        {
        {
          p = string;
          p = string;
          if (c == *p)
          if (c == *p)
            p++;
            p++;
        }
        }
    }
    }
}
}
 
 
/* Wait until STRING shows up in mips_desc.  Returns 1 if successful, else 0 if
/* Wait until STRING shows up in mips_desc.  Returns 1 if successful, else 0 if
   timed out.  The timeout value is hard-coded to 2 seconds.  Use
   timed out.  The timeout value is hard-coded to 2 seconds.  Use
   mips_expect_timeout if a different timeout value is needed.
   mips_expect_timeout if a different timeout value is needed.
 */
 */
 
 
static int
static int
mips_expect (const char *string)
mips_expect (const char *string)
{
{
  return mips_expect_timeout (string, remote_timeout);
  return mips_expect_timeout (string, remote_timeout);
}
}
 
 
/* Read a character from the remote, aborting on error.  Returns
/* Read a character from the remote, aborting on error.  Returns
   SERIAL_TIMEOUT on timeout (since that's what serial_readchar()
   SERIAL_TIMEOUT on timeout (since that's what serial_readchar()
   returns).  FIXME: If we see the string mips_monitor_prompt from the
   returns).  FIXME: If we see the string mips_monitor_prompt from the
   board, then we are debugging on the main console port, and we have
   board, then we are debugging on the main console port, and we have
   somehow dropped out of remote debugging mode.  In this case, we
   somehow dropped out of remote debugging mode.  In this case, we
   automatically go back in to remote debugging mode.  This is a hack,
   automatically go back in to remote debugging mode.  This is a hack,
   put in because I can't find any way for a program running on the
   put in because I can't find any way for a program running on the
   remote board to terminate without also ending remote debugging
   remote board to terminate without also ending remote debugging
   mode.  I assume users won't have any trouble with this; for one
   mode.  I assume users won't have any trouble with this; for one
   thing, the IDT documentation generally assumes that the remote
   thing, the IDT documentation generally assumes that the remote
   debugging port is not the console port.  This is, however, very
   debugging port is not the console port.  This is, however, very
   convenient for DejaGnu when you only have one connected serial
   convenient for DejaGnu when you only have one connected serial
   port.  */
   port.  */
 
 
static int
static int
mips_readchar (int timeout)
mips_readchar (int timeout)
{
{
  int ch;
  int ch;
  static int state = 0;
  static int state = 0;
  int mips_monitor_prompt_len = strlen (mips_monitor_prompt);
  int mips_monitor_prompt_len = strlen (mips_monitor_prompt);
 
 
  {
  {
    int i;
    int i;
 
 
    i = timeout;
    i = timeout;
    if (i == -1 && watchdog > 0)
    if (i == -1 && watchdog > 0)
      i = watchdog;
      i = watchdog;
  }
  }
 
 
  if (state == mips_monitor_prompt_len)
  if (state == mips_monitor_prompt_len)
    timeout = 1;
    timeout = 1;
  ch = serial_readchar (mips_desc, timeout);
  ch = serial_readchar (mips_desc, timeout);
 
 
  if (ch == SERIAL_TIMEOUT && timeout == -1)    /* Watchdog went off */
  if (ch == SERIAL_TIMEOUT && timeout == -1)    /* Watchdog went off */
    {
    {
      target_mourn_inferior ();
      target_mourn_inferior ();
      error ("Watchdog has expired.  Target detached.\n");
      error ("Watchdog has expired.  Target detached.\n");
    }
    }
 
 
  if (ch == SERIAL_EOF)
  if (ch == SERIAL_EOF)
    mips_error ("End of file from remote");
    mips_error ("End of file from remote");
  if (ch == SERIAL_ERROR)
  if (ch == SERIAL_ERROR)
    mips_error ("Error reading from remote: %s", safe_strerror (errno));
    mips_error ("Error reading from remote: %s", safe_strerror (errno));
  if (remote_debug > 1)
  if (remote_debug > 1)
    {
    {
      /* Don't use _filtered; we can't deal with a QUIT out of
      /* Don't use _filtered; we can't deal with a QUIT out of
         target_wait, and I think this might be called from there.  */
         target_wait, and I think this might be called from there.  */
      if (ch != SERIAL_TIMEOUT)
      if (ch != SERIAL_TIMEOUT)
        fprintf_unfiltered (gdb_stdlog, "Read '%c' %d 0x%x\n", ch, ch, ch);
        fprintf_unfiltered (gdb_stdlog, "Read '%c' %d 0x%x\n", ch, ch, ch);
      else
      else
        fprintf_unfiltered (gdb_stdlog, "Timed out in read\n");
        fprintf_unfiltered (gdb_stdlog, "Timed out in read\n");
    }
    }
 
 
  /* If we have seen mips_monitor_prompt and we either time out, or
  /* If we have seen mips_monitor_prompt and we either time out, or
     we see a @ (which was echoed from a packet we sent), reset the
     we see a @ (which was echoed from a packet we sent), reset the
     board as described above.  The first character in a packet after
     board as described above.  The first character in a packet after
     the SYN (which is not echoed) is always an @ unless the packet is
     the SYN (which is not echoed) is always an @ unless the packet is
     more than 64 characters long, which ours never are.  */
     more than 64 characters long, which ours never are.  */
  if ((ch == SERIAL_TIMEOUT || ch == '@')
  if ((ch == SERIAL_TIMEOUT || ch == '@')
      && state == mips_monitor_prompt_len
      && state == mips_monitor_prompt_len
      && !mips_initializing
      && !mips_initializing
      && !mips_exiting)
      && !mips_exiting)
    {
    {
      if (remote_debug > 0)
      if (remote_debug > 0)
        /* Don't use _filtered; we can't deal with a QUIT out of
        /* Don't use _filtered; we can't deal with a QUIT out of
           target_wait, and I think this might be called from there.  */
           target_wait, and I think this might be called from there.  */
        fprintf_unfiltered (gdb_stdlog, "Reinitializing MIPS debugging mode\n");
        fprintf_unfiltered (gdb_stdlog, "Reinitializing MIPS debugging mode\n");
 
 
      mips_need_reply = 0;
      mips_need_reply = 0;
      mips_initialize ();
      mips_initialize ();
 
 
      state = 0;
      state = 0;
 
 
      /* At this point, about the only thing we can do is abort the command
      /* At this point, about the only thing we can do is abort the command
         in progress and get back to command level as quickly as possible. */
         in progress and get back to command level as quickly as possible. */
 
 
      error ("Remote board reset, debug protocol re-initialized.");
      error ("Remote board reset, debug protocol re-initialized.");
    }
    }
 
 
  if (ch == mips_monitor_prompt[state])
  if (ch == mips_monitor_prompt[state])
    ++state;
    ++state;
  else
  else
    state = 0;
    state = 0;
 
 
  return ch;
  return ch;
}
}
 
 
/* Get a packet header, putting the data in the supplied buffer.
/* Get a packet header, putting the data in the supplied buffer.
   PGARBAGE is a pointer to the number of garbage characters received
   PGARBAGE is a pointer to the number of garbage characters received
   so far.  CH is the last character received.  Returns 0 for success,
   so far.  CH is the last character received.  Returns 0 for success,
   or -1 for timeout.  */
   or -1 for timeout.  */
 
 
static int
static int
mips_receive_header (unsigned char *hdr, int *pgarbage, int ch, int timeout)
mips_receive_header (unsigned char *hdr, int *pgarbage, int ch, int timeout)
{
{
  int i;
  int i;
 
 
  while (1)
  while (1)
    {
    {
      /* Wait for a SYN.  mips_syn_garbage is intended to prevent
      /* Wait for a SYN.  mips_syn_garbage is intended to prevent
         sitting here indefinitely if the board sends us one garbage
         sitting here indefinitely if the board sends us one garbage
         character per second.  ch may already have a value from the
         character per second.  ch may already have a value from the
         last time through the loop.  */
         last time through the loop.  */
      while (ch != SYN)
      while (ch != SYN)
        {
        {
          ch = mips_readchar (timeout);
          ch = mips_readchar (timeout);
          if (ch == SERIAL_TIMEOUT)
          if (ch == SERIAL_TIMEOUT)
            return -1;
            return -1;
          if (ch != SYN)
          if (ch != SYN)
            {
            {
              /* Printing the character here lets the user of gdb see
              /* Printing the character here lets the user of gdb see
                 what the program is outputting, if the debugging is
                 what the program is outputting, if the debugging is
                 being done on the console port.  Don't use _filtered:
                 being done on the console port.  Don't use _filtered:
                 we can't deal with a QUIT out of target_wait and
                 we can't deal with a QUIT out of target_wait and
                 buffered target output confuses the user. */
                 buffered target output confuses the user. */
              if (!mips_initializing || remote_debug > 0)
              if (!mips_initializing || remote_debug > 0)
                {
                {
                  if (isprint (ch) || isspace (ch))
                  if (isprint (ch) || isspace (ch))
                    {
                    {
                      fputc_unfiltered (ch, gdb_stdtarg);
                      fputc_unfiltered (ch, gdb_stdtarg);
                    }
                    }
                  else
                  else
                    {
                    {
                      fputc_readable (ch, gdb_stdtarg);
                      fputc_readable (ch, gdb_stdtarg);
                    }
                    }
                  gdb_flush (gdb_stdtarg);
                  gdb_flush (gdb_stdtarg);
                }
                }
 
 
              /* Only count unprintable characters. */
              /* Only count unprintable characters. */
              if (! (isprint (ch) || isspace (ch)))
              if (! (isprint (ch) || isspace (ch)))
                (*pgarbage) += 1;
                (*pgarbage) += 1;
 
 
              if (mips_syn_garbage > 0
              if (mips_syn_garbage > 0
                  && *pgarbage > mips_syn_garbage)
                  && *pgarbage > mips_syn_garbage)
                mips_error ("Debug protocol failure:  more than %d characters before a sync.",
                mips_error ("Debug protocol failure:  more than %d characters before a sync.",
                            mips_syn_garbage);
                            mips_syn_garbage);
            }
            }
        }
        }
 
 
      /* Get the packet header following the SYN.  */
      /* Get the packet header following the SYN.  */
      for (i = 1; i < HDR_LENGTH; i++)
      for (i = 1; i < HDR_LENGTH; i++)
        {
        {
          ch = mips_readchar (timeout);
          ch = mips_readchar (timeout);
          if (ch == SERIAL_TIMEOUT)
          if (ch == SERIAL_TIMEOUT)
            return -1;
            return -1;
          /* Make sure this is a header byte.  */
          /* Make sure this is a header byte.  */
          if (ch == SYN || !HDR_CHECK (ch))
          if (ch == SYN || !HDR_CHECK (ch))
            break;
            break;
 
 
          hdr[i] = ch;
          hdr[i] = ch;
        }
        }
 
 
      /* If we got the complete header, we can return.  Otherwise we
      /* If we got the complete header, we can return.  Otherwise we
         loop around and keep looking for SYN.  */
         loop around and keep looking for SYN.  */
      if (i >= HDR_LENGTH)
      if (i >= HDR_LENGTH)
        return 0;
        return 0;
    }
    }
}
}
 
 
/* Get a packet header, putting the data in the supplied buffer.
/* Get a packet header, putting the data in the supplied buffer.
   PGARBAGE is a pointer to the number of garbage characters received
   PGARBAGE is a pointer to the number of garbage characters received
   so far.  The last character read is returned in *PCH.  Returns 0
   so far.  The last character read is returned in *PCH.  Returns 0
   for success, -1 for timeout, -2 for error.  */
   for success, -1 for timeout, -2 for error.  */
 
 
static int
static int
mips_receive_trailer (unsigned char *trlr, int *pgarbage, int *pch, int timeout)
mips_receive_trailer (unsigned char *trlr, int *pgarbage, int *pch, int timeout)
{
{
  int i;
  int i;
  int ch;
  int ch;
 
 
  for (i = 0; i < TRLR_LENGTH; i++)
  for (i = 0; i < TRLR_LENGTH; i++)
    {
    {
      ch = mips_readchar (timeout);
      ch = mips_readchar (timeout);
      *pch = ch;
      *pch = ch;
      if (ch == SERIAL_TIMEOUT)
      if (ch == SERIAL_TIMEOUT)
        return -1;
        return -1;
      if (!TRLR_CHECK (ch))
      if (!TRLR_CHECK (ch))
        return -2;
        return -2;
      trlr[i] = ch;
      trlr[i] = ch;
    }
    }
  return 0;
  return 0;
}
}
 
 
/* Get the checksum of a packet.  HDR points to the packet header.
/* Get the checksum of a packet.  HDR points to the packet header.
   DATA points to the packet data.  LEN is the length of DATA.  */
   DATA points to the packet data.  LEN is the length of DATA.  */
 
 
static int
static int
mips_cksum (const unsigned char *hdr, const unsigned char *data, int len)
mips_cksum (const unsigned char *hdr, const unsigned char *data, int len)
{
{
  const unsigned char *p;
  const unsigned char *p;
  int c;
  int c;
  int cksum;
  int cksum;
 
 
  cksum = 0;
  cksum = 0;
 
 
  /* The initial SYN is not included in the checksum.  */
  /* The initial SYN is not included in the checksum.  */
  c = HDR_LENGTH - 1;
  c = HDR_LENGTH - 1;
  p = hdr + 1;
  p = hdr + 1;
  while (c-- != 0)
  while (c-- != 0)
    cksum += *p++;
    cksum += *p++;
 
 
  c = len;
  c = len;
  p = data;
  p = data;
  while (c-- != 0)
  while (c-- != 0)
    cksum += *p++;
    cksum += *p++;
 
 
  return cksum;
  return cksum;
}
}
 
 
/* Send a packet containing the given ASCII string.  */
/* Send a packet containing the given ASCII string.  */
 
 
static void
static void
mips_send_packet (const char *s, int get_ack)
mips_send_packet (const char *s, int get_ack)
{
{
  /* unsigned */ int len;
  /* unsigned */ int len;
  unsigned char *packet;
  unsigned char *packet;
  int cksum;
  int cksum;
  int try;
  int try;
 
 
  len = strlen (s);
  len = strlen (s);
  if (len > DATA_MAXLEN)
  if (len > DATA_MAXLEN)
    mips_error ("MIPS protocol data packet too long: %s", s);
    mips_error ("MIPS protocol data packet too long: %s", s);
 
 
  packet = (unsigned char *) alloca (HDR_LENGTH + len + TRLR_LENGTH + 1);
  packet = (unsigned char *) alloca (HDR_LENGTH + len + TRLR_LENGTH + 1);
 
 
  packet[HDR_INDX_SYN] = HDR_SET_SYN (1, len, mips_send_seq);
  packet[HDR_INDX_SYN] = HDR_SET_SYN (1, len, mips_send_seq);
  packet[HDR_INDX_TYPE_LEN] = HDR_SET_TYPE_LEN (1, len, mips_send_seq);
  packet[HDR_INDX_TYPE_LEN] = HDR_SET_TYPE_LEN (1, len, mips_send_seq);
  packet[HDR_INDX_LEN1] = HDR_SET_LEN1 (1, len, mips_send_seq);
  packet[HDR_INDX_LEN1] = HDR_SET_LEN1 (1, len, mips_send_seq);
  packet[HDR_INDX_SEQ] = HDR_SET_SEQ (1, len, mips_send_seq);
  packet[HDR_INDX_SEQ] = HDR_SET_SEQ (1, len, mips_send_seq);
 
 
  memcpy (packet + HDR_LENGTH, s, len);
  memcpy (packet + HDR_LENGTH, s, len);
 
 
  cksum = mips_cksum (packet, packet + HDR_LENGTH, len);
  cksum = mips_cksum (packet, packet + HDR_LENGTH, len);
  packet[HDR_LENGTH + len + TRLR_INDX_CSUM1] = TRLR_SET_CSUM1 (cksum);
  packet[HDR_LENGTH + len + TRLR_INDX_CSUM1] = TRLR_SET_CSUM1 (cksum);
  packet[HDR_LENGTH + len + TRLR_INDX_CSUM2] = TRLR_SET_CSUM2 (cksum);
  packet[HDR_LENGTH + len + TRLR_INDX_CSUM2] = TRLR_SET_CSUM2 (cksum);
  packet[HDR_LENGTH + len + TRLR_INDX_CSUM3] = TRLR_SET_CSUM3 (cksum);
  packet[HDR_LENGTH + len + TRLR_INDX_CSUM3] = TRLR_SET_CSUM3 (cksum);
 
 
  /* Increment the sequence number.  This will set mips_send_seq to
  /* Increment the sequence number.  This will set mips_send_seq to
     the sequence number we expect in the acknowledgement.  */
     the sequence number we expect in the acknowledgement.  */
  mips_send_seq = (mips_send_seq + 1) % SEQ_MODULOS;
  mips_send_seq = (mips_send_seq + 1) % SEQ_MODULOS;
 
 
  /* We can only have one outstanding data packet, so we just wait for
  /* We can only have one outstanding data packet, so we just wait for
     the acknowledgement here.  Keep retransmitting the packet until
     the acknowledgement here.  Keep retransmitting the packet until
     we get one, or until we've tried too many times.  */
     we get one, or until we've tried too many times.  */
  for (try = 0; try < mips_send_retries; try++)
  for (try = 0; try < mips_send_retries; try++)
    {
    {
      int garbage;
      int garbage;
      int ch;
      int ch;
 
 
      if (remote_debug > 0)
      if (remote_debug > 0)
        {
        {
          /* Don't use _filtered; we can't deal with a QUIT out of
          /* Don't use _filtered; we can't deal with a QUIT out of
             target_wait, and I think this might be called from there.  */
             target_wait, and I think this might be called from there.  */
          packet[HDR_LENGTH + len + TRLR_LENGTH] = '\0';
          packet[HDR_LENGTH + len + TRLR_LENGTH] = '\0';
          fprintf_unfiltered (gdb_stdlog, "Writing \"%s\"\n", packet + 1);
          fprintf_unfiltered (gdb_stdlog, "Writing \"%s\"\n", packet + 1);
        }
        }
 
 
      if (serial_write (mips_desc, packet,
      if (serial_write (mips_desc, packet,
                        HDR_LENGTH + len + TRLR_LENGTH) != 0)
                        HDR_LENGTH + len + TRLR_LENGTH) != 0)
        mips_error ("write to target failed: %s", safe_strerror (errno));
        mips_error ("write to target failed: %s", safe_strerror (errno));
 
 
      if (!get_ack)
      if (!get_ack)
        return;
        return;
 
 
      garbage = 0;
      garbage = 0;
      ch = 0;
      ch = 0;
      while (1)
      while (1)
        {
        {
          unsigned char hdr[HDR_LENGTH + 1];
          unsigned char hdr[HDR_LENGTH + 1];
          unsigned char trlr[TRLR_LENGTH + 1];
          unsigned char trlr[TRLR_LENGTH + 1];
          int err;
          int err;
          unsigned int seq;
          unsigned int seq;
 
 
          /* Get the packet header.  If we time out, resend the data
          /* Get the packet header.  If we time out, resend the data
             packet.  */
             packet.  */
          err = mips_receive_header (hdr, &garbage, ch, mips_retransmit_wait);
          err = mips_receive_header (hdr, &garbage, ch, mips_retransmit_wait);
          if (err != 0)
          if (err != 0)
            break;
            break;
 
 
          ch = 0;
          ch = 0;
 
 
          /* If we get a data packet, assume it is a duplicate and
          /* If we get a data packet, assume it is a duplicate and
             ignore it.  FIXME: If the acknowledgement is lost, this
             ignore it.  FIXME: If the acknowledgement is lost, this
             data packet may be the packet the remote sends after the
             data packet may be the packet the remote sends after the
             acknowledgement.  */
             acknowledgement.  */
          if (HDR_IS_DATA (hdr))
          if (HDR_IS_DATA (hdr))
            {
            {
              int i;
              int i;
 
 
              /* Ignore any errors raised whilst attempting to ignore
              /* Ignore any errors raised whilst attempting to ignore
                 packet. */
                 packet. */
 
 
              len = HDR_GET_LEN (hdr);
              len = HDR_GET_LEN (hdr);
 
 
              for (i = 0; i < len; i++)
              for (i = 0; i < len; i++)
                {
                {
                  int rch;
                  int rch;
 
 
                  rch = mips_readchar (remote_timeout);
                  rch = mips_readchar (remote_timeout);
                  if (rch == SYN)
                  if (rch == SYN)
                    {
                    {
                      ch = SYN;
                      ch = SYN;
                      break;
                      break;
                    }
                    }
                  if (rch == SERIAL_TIMEOUT)
                  if (rch == SERIAL_TIMEOUT)
                    break;
                    break;
                  /* ignore the character */
                  /* ignore the character */
                }
                }
 
 
              if (i == len)
              if (i == len)
                (void) mips_receive_trailer (trlr, &garbage, &ch,
                (void) mips_receive_trailer (trlr, &garbage, &ch,
                                             remote_timeout);
                                             remote_timeout);
 
 
              /* We don't bother checking the checksum, or providing an
              /* We don't bother checking the checksum, or providing an
                 ACK to the packet. */
                 ACK to the packet. */
              continue;
              continue;
            }
            }
 
 
          /* If the length is not 0, this is a garbled packet.  */
          /* If the length is not 0, this is a garbled packet.  */
          if (HDR_GET_LEN (hdr) != 0)
          if (HDR_GET_LEN (hdr) != 0)
            continue;
            continue;
 
 
          /* Get the packet trailer.  */
          /* Get the packet trailer.  */
          err = mips_receive_trailer (trlr, &garbage, &ch,
          err = mips_receive_trailer (trlr, &garbage, &ch,
                                      mips_retransmit_wait);
                                      mips_retransmit_wait);
 
 
          /* If we timed out, resend the data packet.  */
          /* If we timed out, resend the data packet.  */
          if (err == -1)
          if (err == -1)
            break;
            break;
 
 
          /* If we got a bad character, reread the header.  */
          /* If we got a bad character, reread the header.  */
          if (err != 0)
          if (err != 0)
            continue;
            continue;
 
 
          /* If the checksum does not match the trailer checksum, this
          /* If the checksum does not match the trailer checksum, this
             is a bad packet; ignore it.  */
             is a bad packet; ignore it.  */
          if (mips_cksum (hdr, (unsigned char *) NULL, 0)
          if (mips_cksum (hdr, (unsigned char *) NULL, 0)
              != TRLR_GET_CKSUM (trlr))
              != TRLR_GET_CKSUM (trlr))
            continue;
            continue;
 
 
          if (remote_debug > 0)
          if (remote_debug > 0)
            {
            {
              hdr[HDR_LENGTH] = '\0';
              hdr[HDR_LENGTH] = '\0';
              trlr[TRLR_LENGTH] = '\0';
              trlr[TRLR_LENGTH] = '\0';
              /* Don't use _filtered; we can't deal with a QUIT out of
              /* Don't use _filtered; we can't deal with a QUIT out of
                 target_wait, and I think this might be called from there.  */
                 target_wait, and I think this might be called from there.  */
              fprintf_unfiltered (gdb_stdlog, "Got ack %d \"%s%s\"\n",
              fprintf_unfiltered (gdb_stdlog, "Got ack %d \"%s%s\"\n",
                                  HDR_GET_SEQ (hdr), hdr + 1, trlr);
                                  HDR_GET_SEQ (hdr), hdr + 1, trlr);
            }
            }
 
 
          /* If this ack is for the current packet, we're done.  */
          /* If this ack is for the current packet, we're done.  */
          seq = HDR_GET_SEQ (hdr);
          seq = HDR_GET_SEQ (hdr);
          if (seq == mips_send_seq)
          if (seq == mips_send_seq)
            return;
            return;
 
 
          /* If this ack is for the last packet, resend the current
          /* If this ack is for the last packet, resend the current
             packet.  */
             packet.  */
          if ((seq + 1) % SEQ_MODULOS == mips_send_seq)
          if ((seq + 1) % SEQ_MODULOS == mips_send_seq)
            break;
            break;
 
 
          /* Otherwise this is a bad ack; ignore it.  Increment the
          /* Otherwise this is a bad ack; ignore it.  Increment the
             garbage count to ensure that we do not stay in this loop
             garbage count to ensure that we do not stay in this loop
             forever.  */
             forever.  */
          ++garbage;
          ++garbage;
        }
        }
    }
    }
 
 
  mips_error ("Remote did not acknowledge packet");
  mips_error ("Remote did not acknowledge packet");
}
}
 
 
/* Receive and acknowledge a packet, returning the data in BUFF (which
/* Receive and acknowledge a packet, returning the data in BUFF (which
   should be DATA_MAXLEN + 1 bytes).  The protocol documentation
   should be DATA_MAXLEN + 1 bytes).  The protocol documentation
   implies that only the sender retransmits packets, so this code just
   implies that only the sender retransmits packets, so this code just
   waits silently for a packet.  It returns the length of the received
   waits silently for a packet.  It returns the length of the received
   packet.  If THROW_ERROR is nonzero, call error() on errors.  If not,
   packet.  If THROW_ERROR is nonzero, call error() on errors.  If not,
   don't print an error message and return -1.  */
   don't print an error message and return -1.  */
 
 
static int
static int
mips_receive_packet (char *buff, int throw_error, int timeout)
mips_receive_packet (char *buff, int throw_error, int timeout)
{
{
  int ch;
  int ch;
  int garbage;
  int garbage;
  int len;
  int len;
  unsigned char ack[HDR_LENGTH + TRLR_LENGTH + 1];
  unsigned char ack[HDR_LENGTH + TRLR_LENGTH + 1];
  int cksum;
  int cksum;
 
 
  ch = 0;
  ch = 0;
  garbage = 0;
  garbage = 0;
  while (1)
  while (1)
    {
    {
      unsigned char hdr[HDR_LENGTH];
      unsigned char hdr[HDR_LENGTH];
      unsigned char trlr[TRLR_LENGTH];
      unsigned char trlr[TRLR_LENGTH];
      int i;
      int i;
      int err;
      int err;
 
 
      if (mips_receive_header (hdr, &garbage, ch, timeout) != 0)
      if (mips_receive_header (hdr, &garbage, ch, timeout) != 0)
        {
        {
          if (throw_error)
          if (throw_error)
            mips_error ("Timed out waiting for remote packet");
            mips_error ("Timed out waiting for remote packet");
          else
          else
            return -1;
            return -1;
        }
        }
 
 
      ch = 0;
      ch = 0;
 
 
      /* An acknowledgement is probably a duplicate; ignore it.  */
      /* An acknowledgement is probably a duplicate; ignore it.  */
      if (!HDR_IS_DATA (hdr))
      if (!HDR_IS_DATA (hdr))
        {
        {
          len = HDR_GET_LEN (hdr);
          len = HDR_GET_LEN (hdr);
          /* Check if the length is valid for an ACK, we may aswell
          /* Check if the length is valid for an ACK, we may aswell
             try and read the remainder of the packet: */
             try and read the remainder of the packet: */
          if (len == 0)
          if (len == 0)
            {
            {
              /* Ignore the error condition, since we are going to
              /* Ignore the error condition, since we are going to
                 ignore the packet anyway. */
                 ignore the packet anyway. */
              (void) mips_receive_trailer (trlr, &garbage, &ch, timeout);
              (void) mips_receive_trailer (trlr, &garbage, &ch, timeout);
            }
            }
          /* Don't use _filtered; we can't deal with a QUIT out of
          /* Don't use _filtered; we can't deal with a QUIT out of
             target_wait, and I think this might be called from there.  */
             target_wait, and I think this might be called from there.  */
          if (remote_debug > 0)
          if (remote_debug > 0)
            fprintf_unfiltered (gdb_stdlog, "Ignoring unexpected ACK\n");
            fprintf_unfiltered (gdb_stdlog, "Ignoring unexpected ACK\n");
          continue;
          continue;
        }
        }
 
 
      len = HDR_GET_LEN (hdr);
      len = HDR_GET_LEN (hdr);
      for (i = 0; i < len; i++)
      for (i = 0; i < len; i++)
        {
        {
          int rch;
          int rch;
 
 
          rch = mips_readchar (timeout);
          rch = mips_readchar (timeout);
          if (rch == SYN)
          if (rch == SYN)
            {
            {
              ch = SYN;
              ch = SYN;
              break;
              break;
            }
            }
          if (rch == SERIAL_TIMEOUT)
          if (rch == SERIAL_TIMEOUT)
            {
            {
              if (throw_error)
              if (throw_error)
                mips_error ("Timed out waiting for remote packet");
                mips_error ("Timed out waiting for remote packet");
              else
              else
                return -1;
                return -1;
            }
            }
          buff[i] = rch;
          buff[i] = rch;
        }
        }
 
 
      if (i < len)
      if (i < len)
        {
        {
          /* Don't use _filtered; we can't deal with a QUIT out of
          /* Don't use _filtered; we can't deal with a QUIT out of
             target_wait, and I think this might be called from there.  */
             target_wait, and I think this might be called from there.  */
          if (remote_debug > 0)
          if (remote_debug > 0)
            fprintf_unfiltered (gdb_stdlog,
            fprintf_unfiltered (gdb_stdlog,
                                "Got new SYN after %d chars (wanted %d)\n",
                                "Got new SYN after %d chars (wanted %d)\n",
                                i, len);
                                i, len);
          continue;
          continue;
        }
        }
 
 
      err = mips_receive_trailer (trlr, &garbage, &ch, timeout);
      err = mips_receive_trailer (trlr, &garbage, &ch, timeout);
      if (err == -1)
      if (err == -1)
        {
        {
          if (throw_error)
          if (throw_error)
            mips_error ("Timed out waiting for packet");
            mips_error ("Timed out waiting for packet");
          else
          else
            return -1;
            return -1;
        }
        }
      if (err == -2)
      if (err == -2)
        {
        {
          /* Don't use _filtered; we can't deal with a QUIT out of
          /* Don't use _filtered; we can't deal with a QUIT out of
             target_wait, and I think this might be called from there.  */
             target_wait, and I think this might be called from there.  */
          if (remote_debug > 0)
          if (remote_debug > 0)
            fprintf_unfiltered (gdb_stdlog, "Got SYN when wanted trailer\n");
            fprintf_unfiltered (gdb_stdlog, "Got SYN when wanted trailer\n");
          continue;
          continue;
        }
        }
 
 
      /* If this is the wrong sequence number, ignore it.  */
      /* If this is the wrong sequence number, ignore it.  */
      if (HDR_GET_SEQ (hdr) != mips_receive_seq)
      if (HDR_GET_SEQ (hdr) != mips_receive_seq)
        {
        {
          /* Don't use _filtered; we can't deal with a QUIT out of
          /* Don't use _filtered; we can't deal with a QUIT out of
             target_wait, and I think this might be called from there.  */
             target_wait, and I think this might be called from there.  */
          if (remote_debug > 0)
          if (remote_debug > 0)
            fprintf_unfiltered (gdb_stdlog,
            fprintf_unfiltered (gdb_stdlog,
                                "Ignoring sequence number %d (want %d)\n",
                                "Ignoring sequence number %d (want %d)\n",
                                HDR_GET_SEQ (hdr), mips_receive_seq);
                                HDR_GET_SEQ (hdr), mips_receive_seq);
          continue;
          continue;
        }
        }
 
 
      if (mips_cksum (hdr, buff, len) == TRLR_GET_CKSUM (trlr))
      if (mips_cksum (hdr, buff, len) == TRLR_GET_CKSUM (trlr))
        break;
        break;
 
 
      if (remote_debug > 0)
      if (remote_debug > 0)
        /* Don't use _filtered; we can't deal with a QUIT out of
        /* Don't use _filtered; we can't deal with a QUIT out of
           target_wait, and I think this might be called from there.  */
           target_wait, and I think this might be called from there.  */
        printf_unfiltered ("Bad checksum; data %d, trailer %d\n",
        printf_unfiltered ("Bad checksum; data %d, trailer %d\n",
                           mips_cksum (hdr, buff, len),
                           mips_cksum (hdr, buff, len),
                           TRLR_GET_CKSUM (trlr));
                           TRLR_GET_CKSUM (trlr));
 
 
      /* The checksum failed.  Send an acknowledgement for the
      /* The checksum failed.  Send an acknowledgement for the
         previous packet to tell the remote to resend the packet.  */
         previous packet to tell the remote to resend the packet.  */
      ack[HDR_INDX_SYN] = HDR_SET_SYN (0, 0, mips_receive_seq);
      ack[HDR_INDX_SYN] = HDR_SET_SYN (0, 0, mips_receive_seq);
      ack[HDR_INDX_TYPE_LEN] = HDR_SET_TYPE_LEN (0, 0, mips_receive_seq);
      ack[HDR_INDX_TYPE_LEN] = HDR_SET_TYPE_LEN (0, 0, mips_receive_seq);
      ack[HDR_INDX_LEN1] = HDR_SET_LEN1 (0, 0, mips_receive_seq);
      ack[HDR_INDX_LEN1] = HDR_SET_LEN1 (0, 0, mips_receive_seq);
      ack[HDR_INDX_SEQ] = HDR_SET_SEQ (0, 0, mips_receive_seq);
      ack[HDR_INDX_SEQ] = HDR_SET_SEQ (0, 0, mips_receive_seq);
 
 
      cksum = mips_cksum (ack, (unsigned char *) NULL, 0);
      cksum = mips_cksum (ack, (unsigned char *) NULL, 0);
 
 
      ack[HDR_LENGTH + TRLR_INDX_CSUM1] = TRLR_SET_CSUM1 (cksum);
      ack[HDR_LENGTH + TRLR_INDX_CSUM1] = TRLR_SET_CSUM1 (cksum);
      ack[HDR_LENGTH + TRLR_INDX_CSUM2] = TRLR_SET_CSUM2 (cksum);
      ack[HDR_LENGTH + TRLR_INDX_CSUM2] = TRLR_SET_CSUM2 (cksum);
      ack[HDR_LENGTH + TRLR_INDX_CSUM3] = TRLR_SET_CSUM3 (cksum);
      ack[HDR_LENGTH + TRLR_INDX_CSUM3] = TRLR_SET_CSUM3 (cksum);
 
 
      if (remote_debug > 0)
      if (remote_debug > 0)
        {
        {
          ack[HDR_LENGTH + TRLR_LENGTH] = '\0';
          ack[HDR_LENGTH + TRLR_LENGTH] = '\0';
          /* Don't use _filtered; we can't deal with a QUIT out of
          /* Don't use _filtered; we can't deal with a QUIT out of
             target_wait, and I think this might be called from there.  */
             target_wait, and I think this might be called from there.  */
          printf_unfiltered ("Writing ack %d \"%s\"\n", mips_receive_seq,
          printf_unfiltered ("Writing ack %d \"%s\"\n", mips_receive_seq,
                             ack + 1);
                             ack + 1);
        }
        }
 
 
      if (serial_write (mips_desc, ack, HDR_LENGTH + TRLR_LENGTH) != 0)
      if (serial_write (mips_desc, ack, HDR_LENGTH + TRLR_LENGTH) != 0)
        {
        {
          if (throw_error)
          if (throw_error)
            mips_error ("write to target failed: %s", safe_strerror (errno));
            mips_error ("write to target failed: %s", safe_strerror (errno));
          else
          else
            return -1;
            return -1;
        }
        }
    }
    }
 
 
  if (remote_debug > 0)
  if (remote_debug > 0)
    {
    {
      buff[len] = '\0';
      buff[len] = '\0';
      /* Don't use _filtered; we can't deal with a QUIT out of
      /* Don't use _filtered; we can't deal with a QUIT out of
         target_wait, and I think this might be called from there.  */
         target_wait, and I think this might be called from there.  */
      printf_unfiltered ("Got packet \"%s\"\n", buff);
      printf_unfiltered ("Got packet \"%s\"\n", buff);
    }
    }
 
 
  /* We got the packet.  Send an acknowledgement.  */
  /* We got the packet.  Send an acknowledgement.  */
  mips_receive_seq = (mips_receive_seq + 1) % SEQ_MODULOS;
  mips_receive_seq = (mips_receive_seq + 1) % SEQ_MODULOS;
 
 
  ack[HDR_INDX_SYN] = HDR_SET_SYN (0, 0, mips_receive_seq);
  ack[HDR_INDX_SYN] = HDR_SET_SYN (0, 0, mips_receive_seq);
  ack[HDR_INDX_TYPE_LEN] = HDR_SET_TYPE_LEN (0, 0, mips_receive_seq);
  ack[HDR_INDX_TYPE_LEN] = HDR_SET_TYPE_LEN (0, 0, mips_receive_seq);
  ack[HDR_INDX_LEN1] = HDR_SET_LEN1 (0, 0, mips_receive_seq);
  ack[HDR_INDX_LEN1] = HDR_SET_LEN1 (0, 0, mips_receive_seq);
  ack[HDR_INDX_SEQ] = HDR_SET_SEQ (0, 0, mips_receive_seq);
  ack[HDR_INDX_SEQ] = HDR_SET_SEQ (0, 0, mips_receive_seq);
 
 
  cksum = mips_cksum (ack, (unsigned char *) NULL, 0);
  cksum = mips_cksum (ack, (unsigned char *) NULL, 0);
 
 
  ack[HDR_LENGTH + TRLR_INDX_CSUM1] = TRLR_SET_CSUM1 (cksum);
  ack[HDR_LENGTH + TRLR_INDX_CSUM1] = TRLR_SET_CSUM1 (cksum);
  ack[HDR_LENGTH + TRLR_INDX_CSUM2] = TRLR_SET_CSUM2 (cksum);
  ack[HDR_LENGTH + TRLR_INDX_CSUM2] = TRLR_SET_CSUM2 (cksum);
  ack[HDR_LENGTH + TRLR_INDX_CSUM3] = TRLR_SET_CSUM3 (cksum);
  ack[HDR_LENGTH + TRLR_INDX_CSUM3] = TRLR_SET_CSUM3 (cksum);
 
 
  if (remote_debug > 0)
  if (remote_debug > 0)
    {
    {
      ack[HDR_LENGTH + TRLR_LENGTH] = '\0';
      ack[HDR_LENGTH + TRLR_LENGTH] = '\0';
      /* Don't use _filtered; we can't deal with a QUIT out of
      /* Don't use _filtered; we can't deal with a QUIT out of
         target_wait, and I think this might be called from there.  */
         target_wait, and I think this might be called from there.  */
      printf_unfiltered ("Writing ack %d \"%s\"\n", mips_receive_seq,
      printf_unfiltered ("Writing ack %d \"%s\"\n", mips_receive_seq,
                         ack + 1);
                         ack + 1);
    }
    }
 
 
  if (serial_write (mips_desc, ack, HDR_LENGTH + TRLR_LENGTH) != 0)
  if (serial_write (mips_desc, ack, HDR_LENGTH + TRLR_LENGTH) != 0)
    {
    {
      if (throw_error)
      if (throw_error)
        mips_error ("write to target failed: %s", safe_strerror (errno));
        mips_error ("write to target failed: %s", safe_strerror (errno));
      else
      else
        return -1;
        return -1;
    }
    }
 
 
  return len;
  return len;
}
}


/* Optionally send a request to the remote system and optionally wait
/* Optionally send a request to the remote system and optionally wait
   for the reply.  This implements the remote debugging protocol,
   for the reply.  This implements the remote debugging protocol,
   which is built on top of the packet protocol defined above.  Each
   which is built on top of the packet protocol defined above.  Each
   request has an ADDR argument and a DATA argument.  The following
   request has an ADDR argument and a DATA argument.  The following
   requests are defined:
   requests are defined:
 
 
   \0   don't send a request; just wait for a reply
   \0   don't send a request; just wait for a reply
   i    read word from instruction space at ADDR
   i    read word from instruction space at ADDR
   d    read word from data space at ADDR
   d    read word from data space at ADDR
   I    write DATA to instruction space at ADDR
   I    write DATA to instruction space at ADDR
   D    write DATA to data space at ADDR
   D    write DATA to data space at ADDR
   r    read register number ADDR
   r    read register number ADDR
   R    set register number ADDR to value DATA
   R    set register number ADDR to value DATA
   c    continue execution (if ADDR != 1, set pc to ADDR)
   c    continue execution (if ADDR != 1, set pc to ADDR)
   s    single step (if ADDR != 1, set pc to ADDR)
   s    single step (if ADDR != 1, set pc to ADDR)
 
 
   The read requests return the value requested.  The write requests
   The read requests return the value requested.  The write requests
   return the previous value in the changed location.  The execution
   return the previous value in the changed location.  The execution
   requests return a UNIX wait value (the approximate signal which
   requests return a UNIX wait value (the approximate signal which
   caused execution to stop is in the upper eight bits).
   caused execution to stop is in the upper eight bits).
 
 
   If PERR is not NULL, this function waits for a reply.  If an error
   If PERR is not NULL, this function waits for a reply.  If an error
   occurs, it sets *PERR to 1 and sets errno according to what the
   occurs, it sets *PERR to 1 and sets errno according to what the
   target board reports.  */
   target board reports.  */
 
 
static ULONGEST
static ULONGEST
mips_request (int cmd,
mips_request (int cmd,
              ULONGEST addr,
              ULONGEST addr,
              ULONGEST data,
              ULONGEST data,
              int *perr,
              int *perr,
              int timeout,
              int timeout,
              char *buff)
              char *buff)
{
{
  char myBuff[DATA_MAXLEN + 1];
  char myBuff[DATA_MAXLEN + 1];
  int len;
  int len;
  int rpid;
  int rpid;
  char rcmd;
  char rcmd;
  int rerrflg;
  int rerrflg;
  unsigned long rresponse;
  unsigned long rresponse;
 
 
  if (buff == (char *) NULL)
  if (buff == (char *) NULL)
    buff = myBuff;
    buff = myBuff;
 
 
  if (cmd != '\0')
  if (cmd != '\0')
    {
    {
      if (mips_need_reply)
      if (mips_need_reply)
        internal_error (__FILE__, __LINE__,
        internal_error (__FILE__, __LINE__,
                        _("mips_request: Trying to send command before reply"));
                        _("mips_request: Trying to send command before reply"));
      sprintf (buff, "0x0 %c 0x%s 0x%s", cmd, paddr_nz (addr), paddr_nz (data));
      sprintf (buff, "0x0 %c 0x%s 0x%s", cmd, paddr_nz (addr), paddr_nz (data));
      mips_send_packet (buff, 1);
      mips_send_packet (buff, 1);
      mips_need_reply = 1;
      mips_need_reply = 1;
    }
    }
 
 
  if (perr == (int *) NULL)
  if (perr == (int *) NULL)
    return 0;
    return 0;
 
 
  if (!mips_need_reply)
  if (!mips_need_reply)
    internal_error (__FILE__, __LINE__,
    internal_error (__FILE__, __LINE__,
                    _("mips_request: Trying to get reply before command"));
                    _("mips_request: Trying to get reply before command"));
 
 
  mips_need_reply = 0;
  mips_need_reply = 0;
 
 
  len = mips_receive_packet (buff, 1, timeout);
  len = mips_receive_packet (buff, 1, timeout);
  buff[len] = '\0';
  buff[len] = '\0';
 
 
  if (sscanf (buff, "0x%x %c 0x%x 0x%lx",
  if (sscanf (buff, "0x%x %c 0x%x 0x%lx",
              &rpid, &rcmd, &rerrflg, &rresponse) != 4
              &rpid, &rcmd, &rerrflg, &rresponse) != 4
      || (cmd != '\0' && rcmd != cmd))
      || (cmd != '\0' && rcmd != cmd))
    mips_error ("Bad response from remote board");
    mips_error ("Bad response from remote board");
 
 
  if (rerrflg != 0)
  if (rerrflg != 0)
    {
    {
      *perr = 1;
      *perr = 1;
 
 
      /* FIXME: This will returns MIPS errno numbers, which may or may
      /* FIXME: This will returns MIPS errno numbers, which may or may
         not be the same as errno values used on other systems.  If
         not be the same as errno values used on other systems.  If
         they stick to common errno values, they will be the same, but
         they stick to common errno values, they will be the same, but
         if they don't, they must be translated.  */
         if they don't, they must be translated.  */
      errno = rresponse;
      errno = rresponse;
 
 
      return 0;
      return 0;
    }
    }
 
 
  *perr = 0;
  *perr = 0;
  return rresponse;
  return rresponse;
}
}
 
 
static void
static void
mips_initialize_cleanups (void *arg)
mips_initialize_cleanups (void *arg)
{
{
  mips_initializing = 0;
  mips_initializing = 0;
}
}
 
 
static void
static void
mips_exit_cleanups (void *arg)
mips_exit_cleanups (void *arg)
{
{
  mips_exiting = 0;
  mips_exiting = 0;
}
}
 
 
static void
static void
mips_send_command (const char *cmd, int prompt)
mips_send_command (const char *cmd, int prompt)
{
{
  serial_write (mips_desc, cmd, strlen (cmd));
  serial_write (mips_desc, cmd, strlen (cmd));
  mips_expect (cmd);
  mips_expect (cmd);
  mips_expect ("\n");
  mips_expect ("\n");
  if (prompt)
  if (prompt)
    mips_expect (mips_monitor_prompt);
    mips_expect (mips_monitor_prompt);
}
}
 
 
/* Enter remote (dbx) debug mode: */
/* Enter remote (dbx) debug mode: */
static void
static void
mips_enter_debug (void)
mips_enter_debug (void)
{
{
  /* Reset the sequence numbers, ready for the new debug sequence: */
  /* Reset the sequence numbers, ready for the new debug sequence: */
  mips_send_seq = 0;
  mips_send_seq = 0;
  mips_receive_seq = 0;
  mips_receive_seq = 0;
 
 
  if (mips_monitor != MON_IDT)
  if (mips_monitor != MON_IDT)
    mips_send_command ("debug\r", 0);
    mips_send_command ("debug\r", 0);
  else                          /* assume IDT monitor by default */
  else                          /* assume IDT monitor by default */
    mips_send_command ("db tty0\r", 0);
    mips_send_command ("db tty0\r", 0);
 
 
  sleep (1);
  sleep (1);
  serial_write (mips_desc, "\r", sizeof "\r" - 1);
  serial_write (mips_desc, "\r", sizeof "\r" - 1);
 
 
  /* We don't need to absorb any spurious characters here, since the
  /* We don't need to absorb any spurious characters here, since the
     mips_receive_header will eat up a reasonable number of characters
     mips_receive_header will eat up a reasonable number of characters
     whilst looking for the SYN, however this avoids the "garbage"
     whilst looking for the SYN, however this avoids the "garbage"
     being displayed to the user. */
     being displayed to the user. */
  if (mips_monitor != MON_IDT)
  if (mips_monitor != MON_IDT)
    mips_expect ("\r");
    mips_expect ("\r");
 
 
  {
  {
    char buff[DATA_MAXLEN + 1];
    char buff[DATA_MAXLEN + 1];
    if (mips_receive_packet (buff, 1, 3) < 0)
    if (mips_receive_packet (buff, 1, 3) < 0)
      mips_error ("Failed to initialize (didn't receive packet).");
      mips_error ("Failed to initialize (didn't receive packet).");
  }
  }
}
}
 
 
/* Exit remote (dbx) debug mode, returning to the monitor prompt: */
/* Exit remote (dbx) debug mode, returning to the monitor prompt: */
static int
static int
mips_exit_debug (void)
mips_exit_debug (void)
{
{
  int err;
  int err;
  struct cleanup *old_cleanups = make_cleanup (mips_exit_cleanups, NULL);
  struct cleanup *old_cleanups = make_cleanup (mips_exit_cleanups, NULL);
 
 
  mips_exiting = 1;
  mips_exiting = 1;
 
 
  if (mips_monitor != MON_IDT)
  if (mips_monitor != MON_IDT)
    {
    {
      /* The DDB (NEC) and MiniRISC (LSI) versions of PMON exit immediately,
      /* The DDB (NEC) and MiniRISC (LSI) versions of PMON exit immediately,
         so we do not get a reply to this command: */
         so we do not get a reply to this command: */
      mips_request ('x', 0, 0, NULL, mips_receive_wait, NULL);
      mips_request ('x', 0, 0, NULL, mips_receive_wait, NULL);
      mips_need_reply = 0;
      mips_need_reply = 0;
      if (!mips_expect (" break!"))
      if (!mips_expect (" break!"))
        return -1;
        return -1;
    }
    }
  else
  else
    mips_request ('x', 0, 0, &err, mips_receive_wait, NULL);
    mips_request ('x', 0, 0, &err, mips_receive_wait, NULL);
 
 
  if (!mips_expect (mips_monitor_prompt))
  if (!mips_expect (mips_monitor_prompt))
    return -1;
    return -1;
 
 
  do_cleanups (old_cleanups);
  do_cleanups (old_cleanups);
 
 
  return 0;
  return 0;
}
}
 
 
/* Initialize a new connection to the MIPS board, and make sure we are
/* Initialize a new connection to the MIPS board, and make sure we are
   really connected.  */
   really connected.  */
 
 
static void
static void
mips_initialize (void)
mips_initialize (void)
{
{
  int err;
  int err;
  struct cleanup *old_cleanups = make_cleanup (mips_initialize_cleanups, NULL);
  struct cleanup *old_cleanups = make_cleanup (mips_initialize_cleanups, NULL);
  int j;
  int j;
 
 
  /* What is this code doing here?  I don't see any way it can happen, and
  /* What is this code doing here?  I don't see any way it can happen, and
     it might mean mips_initializing didn't get cleared properly.
     it might mean mips_initializing didn't get cleared properly.
     So I'll make it a warning.  */
     So I'll make it a warning.  */
 
 
  if (mips_initializing)
  if (mips_initializing)
    {
    {
      warning ("internal error: mips_initialize called twice");
      warning ("internal error: mips_initialize called twice");
      return;
      return;
    }
    }
 
 
  mips_wait_flag = 0;
  mips_wait_flag = 0;
  mips_initializing = 1;
  mips_initializing = 1;
 
 
  /* At this point, the packit protocol isn't responding.  We'll try getting
  /* At this point, the packit protocol isn't responding.  We'll try getting
     into the monitor, and restarting the protocol.  */
     into the monitor, and restarting the protocol.  */
 
 
  /* Force the system into the monitor.  After this we *should* be at
  /* Force the system into the monitor.  After this we *should* be at
     the mips_monitor_prompt.  */
     the mips_monitor_prompt.  */
  if (mips_monitor != MON_IDT)
  if (mips_monitor != MON_IDT)
    j = 0;                       /* start by checking if we are already at the prompt */
    j = 0;                       /* start by checking if we are already at the prompt */
  else
  else
    j = 1;                      /* start by sending a break */
    j = 1;                      /* start by sending a break */
  for (; j <= 4; j++)
  for (; j <= 4; j++)
    {
    {
      switch (j)
      switch (j)
        {
        {
        case 0:          /* First, try sending a CR */
        case 0:          /* First, try sending a CR */
          serial_flush_input (mips_desc);
          serial_flush_input (mips_desc);
          serial_write (mips_desc, "\r", 1);
          serial_write (mips_desc, "\r", 1);
          break;
          break;
        case 1:         /* First, try sending a break */
        case 1:         /* First, try sending a break */
          serial_send_break (mips_desc);
          serial_send_break (mips_desc);
          break;
          break;
        case 2:         /* Then, try a ^C */
        case 2:         /* Then, try a ^C */
          serial_write (mips_desc, "\003", 1);
          serial_write (mips_desc, "\003", 1);
          break;
          break;
        case 3:         /* Then, try escaping from download */
        case 3:         /* Then, try escaping from download */
          {
          {
            if (mips_monitor != MON_IDT)
            if (mips_monitor != MON_IDT)
              {
              {
                char tbuff[7];
                char tbuff[7];
 
 
                /* We shouldn't need to send multiple termination
                /* We shouldn't need to send multiple termination
                   sequences, since the target performs line (or
                   sequences, since the target performs line (or
                   block) reads, and then processes those
                   block) reads, and then processes those
                   packets. In-case we were downloading a large packet
                   packets. In-case we were downloading a large packet
                   we flush the output buffer before inserting a
                   we flush the output buffer before inserting a
                   termination sequence. */
                   termination sequence. */
                serial_flush_output (mips_desc);
                serial_flush_output (mips_desc);
                sprintf (tbuff, "\r/E/E\r");
                sprintf (tbuff, "\r/E/E\r");
                serial_write (mips_desc, tbuff, 6);
                serial_write (mips_desc, tbuff, 6);
              }
              }
            else
            else
              {
              {
                char srec[10];
                char srec[10];
                int i;
                int i;
 
 
                /* We are possibly in binary download mode, having
                /* We are possibly in binary download mode, having
                   aborted in the middle of an S-record.  ^C won't
                   aborted in the middle of an S-record.  ^C won't
                   work because of binary mode.  The only reliable way
                   work because of binary mode.  The only reliable way
                   out is to send enough termination packets (8 bytes)
                   out is to send enough termination packets (8 bytes)
                   to fill up and then overflow the largest size
                   to fill up and then overflow the largest size
                   S-record (255 bytes in this case).  This amounts to
                   S-record (255 bytes in this case).  This amounts to
                   256/8 + 1 packets.
                   256/8 + 1 packets.
                 */
                 */
 
 
                mips_make_srec (srec, '7', 0, NULL, 0);
                mips_make_srec (srec, '7', 0, NULL, 0);
 
 
                for (i = 1; i <= 33; i++)
                for (i = 1; i <= 33; i++)
                  {
                  {
                    serial_write (mips_desc, srec, 8);
                    serial_write (mips_desc, srec, 8);
 
 
                    if (serial_readchar (mips_desc, 0) >= 0)
                    if (serial_readchar (mips_desc, 0) >= 0)
                      break;    /* Break immediatly if we get something from
                      break;    /* Break immediatly if we get something from
                                   the board. */
                                   the board. */
                  }
                  }
              }
              }
          }
          }
          break;
          break;
        case 4:
        case 4:
          mips_error ("Failed to initialize.");
          mips_error ("Failed to initialize.");
        }
        }
 
 
      if (mips_expect (mips_monitor_prompt))
      if (mips_expect (mips_monitor_prompt))
        break;
        break;
    }
    }
 
 
  if (mips_monitor != MON_IDT)
  if (mips_monitor != MON_IDT)
    {
    {
      /* Sometimes PMON ignores the first few characters in the first
      /* Sometimes PMON ignores the first few characters in the first
         command sent after a load.  Sending a blank command gets
         command sent after a load.  Sending a blank command gets
         around that.  */
         around that.  */
      mips_send_command ("\r", -1);
      mips_send_command ("\r", -1);
 
 
      /* Ensure the correct target state: */
      /* Ensure the correct target state: */
      if (mips_monitor != MON_LSI)
      if (mips_monitor != MON_LSI)
        mips_send_command ("set regsize 64\r", -1);
        mips_send_command ("set regsize 64\r", -1);
      mips_send_command ("set hostport tty0\r", -1);
      mips_send_command ("set hostport tty0\r", -1);
      mips_send_command ("set brkcmd \"\"\r", -1);
      mips_send_command ("set brkcmd \"\"\r", -1);
      /* Delete all the current breakpoints: */
      /* Delete all the current breakpoints: */
      mips_send_command ("db *\r", -1);
      mips_send_command ("db *\r", -1);
      /* NOTE: PMON does not have breakpoint support through the
      /* NOTE: PMON does not have breakpoint support through the
         "debug" mode, only at the monitor command-line. */
         "debug" mode, only at the monitor command-line. */
    }
    }
 
 
  mips_enter_debug ();
  mips_enter_debug ();
 
 
  /* Clear all breakpoints: */
  /* Clear all breakpoints: */
  if ((mips_monitor == MON_IDT
  if ((mips_monitor == MON_IDT
       && mips_clear_breakpoint (-1, 0, BREAK_UNUSED) == 0)
       && mips_clear_breakpoint (-1, 0, BREAK_UNUSED) == 0)
      || mips_monitor == MON_LSI)
      || mips_monitor == MON_LSI)
    monitor_supports_breakpoints = 1;
    monitor_supports_breakpoints = 1;
  else
  else
    monitor_supports_breakpoints = 0;
    monitor_supports_breakpoints = 0;
 
 
  do_cleanups (old_cleanups);
  do_cleanups (old_cleanups);
 
 
  /* If this doesn't call error, we have connected; we don't care if
  /* If this doesn't call error, we have connected; we don't care if
     the request itself succeeds or fails.  */
     the request itself succeeds or fails.  */
 
 
  mips_request ('r', 0, 0, &err, mips_receive_wait, NULL);
  mips_request ('r', 0, 0, &err, mips_receive_wait, NULL);
}
}
 
 
/* Open a connection to the remote board.  */
/* Open a connection to the remote board.  */
static void
static void
common_open (struct target_ops *ops, char *name, int from_tty,
common_open (struct target_ops *ops, char *name, int from_tty,
             enum mips_monitor_type new_monitor,
             enum mips_monitor_type new_monitor,
             const char *new_monitor_prompt)
             const char *new_monitor_prompt)
{
{
  char *ptype;
  char *ptype;
  char *serial_port_name;
  char *serial_port_name;
  char *remote_name = 0;
  char *remote_name = 0;
  char *local_name = 0;
  char *local_name = 0;
  char **argv;
  char **argv;
 
 
  if (name == 0)
  if (name == 0)
    error (
    error (
            "To open a MIPS remote debugging connection, you need to specify what serial\n\
            "To open a MIPS remote debugging connection, you need to specify what serial\n\
device is attached to the target board (e.g., /dev/ttya).\n"
device is attached to the target board (e.g., /dev/ttya).\n"
            "If you want to use TFTP to download to the board, specify the name of a\n"
            "If you want to use TFTP to download to the board, specify the name of a\n"
            "temporary file to be used by GDB for downloads as the second argument.\n"
            "temporary file to be used by GDB for downloads as the second argument.\n"
            "This filename must be in the form host:filename, where host is the name\n"
            "This filename must be in the form host:filename, where host is the name\n"
            "of the host running the TFTP server, and the file must be readable by the\n"
            "of the host running the TFTP server, and the file must be readable by the\n"
            "world.  If the local name of the temporary file differs from the name as\n"
            "world.  If the local name of the temporary file differs from the name as\n"
            "seen from the board via TFTP, specify that name as the third parameter.\n");
            "seen from the board via TFTP, specify that name as the third parameter.\n");
 
 
  /* Parse the serial port name, the optional TFTP name, and the
  /* Parse the serial port name, the optional TFTP name, and the
     optional local TFTP name.  */
     optional local TFTP name.  */
  if ((argv = buildargv (name)) == NULL)
  if ((argv = buildargv (name)) == NULL)
    nomem (0);
    nomem (0);
  make_cleanup_freeargv (argv);
  make_cleanup_freeargv (argv);
 
 
  serial_port_name = xstrdup (argv[0]);
  serial_port_name = xstrdup (argv[0]);
  if (argv[1])                  /* remote TFTP name specified? */
  if (argv[1])                  /* remote TFTP name specified? */
    {
    {
      remote_name = argv[1];
      remote_name = argv[1];
      if (argv[2])              /* local TFTP filename specified? */
      if (argv[2])              /* local TFTP filename specified? */
        local_name = argv[2];
        local_name = argv[2];
    }
    }
 
 
  target_preopen (from_tty);
  target_preopen (from_tty);
 
 
  if (mips_is_open)
  if (mips_is_open)
    unpush_target (current_ops);
    unpush_target (current_ops);
 
 
  /* Open and initialize the serial port.  */
  /* Open and initialize the serial port.  */
  mips_desc = serial_open (serial_port_name);
  mips_desc = serial_open (serial_port_name);
  if (mips_desc == NULL)
  if (mips_desc == NULL)
    perror_with_name (serial_port_name);
    perror_with_name (serial_port_name);
 
 
  if (baud_rate != -1)
  if (baud_rate != -1)
    {
    {
      if (serial_setbaudrate (mips_desc, baud_rate))
      if (serial_setbaudrate (mips_desc, baud_rate))
        {
        {
          serial_close (mips_desc);
          serial_close (mips_desc);
          perror_with_name (serial_port_name);
          perror_with_name (serial_port_name);
        }
        }
    }
    }
 
 
  serial_raw (mips_desc);
  serial_raw (mips_desc);
 
 
  /* Open and initialize the optional download port.  If it is in the form
  /* Open and initialize the optional download port.  If it is in the form
     hostname#portnumber, it's a UDP socket.  If it is in the form
     hostname#portnumber, it's a UDP socket.  If it is in the form
     hostname:filename, assume it's the TFTP filename that must be
     hostname:filename, assume it's the TFTP filename that must be
     passed to the DDB board to tell it where to get the load file.  */
     passed to the DDB board to tell it where to get the load file.  */
  if (remote_name)
  if (remote_name)
    {
    {
      if (strchr (remote_name, '#'))
      if (strchr (remote_name, '#'))
        {
        {
          udp_desc = serial_open (remote_name);
          udp_desc = serial_open (remote_name);
          if (!udp_desc)
          if (!udp_desc)
            perror_with_name ("Unable to open UDP port");
            perror_with_name ("Unable to open UDP port");
          udp_in_use = 1;
          udp_in_use = 1;
        }
        }
      else
      else
        {
        {
          /* Save the remote and local names of the TFTP temp file.  If
          /* Save the remote and local names of the TFTP temp file.  If
             the user didn't specify a local name, assume it's the same
             the user didn't specify a local name, assume it's the same
             as the part of the remote name after the "host:".  */
             as the part of the remote name after the "host:".  */
          if (tftp_name)
          if (tftp_name)
            xfree (tftp_name);
            xfree (tftp_name);
          if (tftp_localname)
          if (tftp_localname)
            xfree (tftp_localname);
            xfree (tftp_localname);
          if (local_name == NULL)
          if (local_name == NULL)
            if ((local_name = strchr (remote_name, ':')) != NULL)
            if ((local_name = strchr (remote_name, ':')) != NULL)
              local_name++;     /* skip over the colon */
              local_name++;     /* skip over the colon */
          if (local_name == NULL)
          if (local_name == NULL)
            local_name = remote_name;   /* local name same as remote name */
            local_name = remote_name;   /* local name same as remote name */
          tftp_name = xstrdup (remote_name);
          tftp_name = xstrdup (remote_name);
          tftp_localname = xstrdup (local_name);
          tftp_localname = xstrdup (local_name);
          tftp_in_use = 1;
          tftp_in_use = 1;
        }
        }
    }
    }
 
 
  current_ops = ops;
  current_ops = ops;
  mips_is_open = 1;
  mips_is_open = 1;
 
 
  /* Reset the expected monitor prompt if it's never been set before.  */
  /* Reset the expected monitor prompt if it's never been set before.  */
  if (mips_monitor_prompt == NULL)
  if (mips_monitor_prompt == NULL)
    mips_monitor_prompt = xstrdup (new_monitor_prompt);
    mips_monitor_prompt = xstrdup (new_monitor_prompt);
  mips_monitor = new_monitor;
  mips_monitor = new_monitor;
 
 
  mips_initialize ();
  mips_initialize ();
 
 
  if (from_tty)
  if (from_tty)
    printf_unfiltered ("Remote MIPS debugging using %s\n", serial_port_name);
    printf_unfiltered ("Remote MIPS debugging using %s\n", serial_port_name);
 
 
  /* Switch to using remote target now.  */
  /* Switch to using remote target now.  */
  push_target (ops);
  push_target (ops);
 
 
  /* FIXME: Should we call start_remote here?  */
  /* FIXME: Should we call start_remote here?  */
 
 
  /* Try to figure out the processor model if possible.  */
  /* Try to figure out the processor model if possible.  */
  deprecated_mips_set_processor_regs_hack ();
  deprecated_mips_set_processor_regs_hack ();
 
 
  /* This is really the job of start_remote however, that makes an
  /* This is really the job of start_remote however, that makes an
     assumption that the target is about to print out a status message
     assumption that the target is about to print out a status message
     of some sort.  That doesn't happen here (in fact, it may not be
     of some sort.  That doesn't happen here (in fact, it may not be
     possible to get the monitor to send the appropriate packet).  */
     possible to get the monitor to send the appropriate packet).  */
 
 
  reinit_frame_cache ();
  reinit_frame_cache ();
  registers_changed ();
  registers_changed ();
  stop_pc = read_pc ();
  stop_pc = read_pc ();
  print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC);
  print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC);
  xfree (serial_port_name);
  xfree (serial_port_name);
}
}
 
 
static void
static void
mips_open (char *name, int from_tty)
mips_open (char *name, int from_tty)
{
{
  const char *monitor_prompt = NULL;
  const char *monitor_prompt = NULL;
  if (gdbarch_bfd_arch_info (current_gdbarch) != NULL
  if (gdbarch_bfd_arch_info (current_gdbarch) != NULL
      && gdbarch_bfd_arch_info (current_gdbarch)->arch == bfd_arch_mips)
      && gdbarch_bfd_arch_info (current_gdbarch)->arch == bfd_arch_mips)
    {
    {
    switch (gdbarch_bfd_arch_info (current_gdbarch)->mach)
    switch (gdbarch_bfd_arch_info (current_gdbarch)->mach)
      {
      {
      case bfd_mach_mips4100:
      case bfd_mach_mips4100:
      case bfd_mach_mips4300:
      case bfd_mach_mips4300:
      case bfd_mach_mips4600:
      case bfd_mach_mips4600:
      case bfd_mach_mips4650:
      case bfd_mach_mips4650:
      case bfd_mach_mips5000:
      case bfd_mach_mips5000:
        monitor_prompt = "<RISQ> ";
        monitor_prompt = "<RISQ> ";
        break;
        break;
      }
      }
    }
    }
  if (monitor_prompt == NULL)
  if (monitor_prompt == NULL)
    monitor_prompt = "<IDT>";
    monitor_prompt = "<IDT>";
  common_open (&mips_ops, name, from_tty, MON_IDT, monitor_prompt);
  common_open (&mips_ops, name, from_tty, MON_IDT, monitor_prompt);
}
}
 
 
static void
static void
pmon_open (char *name, int from_tty)
pmon_open (char *name, int from_tty)
{
{
  common_open (&pmon_ops, name, from_tty, MON_PMON, "PMON> ");
  common_open (&pmon_ops, name, from_tty, MON_PMON, "PMON> ");
}
}
 
 
static void
static void
ddb_open (char *name, int from_tty)
ddb_open (char *name, int from_tty)
{
{
  common_open (&ddb_ops, name, from_tty, MON_DDB, "NEC010>");
  common_open (&ddb_ops, name, from_tty, MON_DDB, "NEC010>");
}
}
 
 
static void
static void
lsi_open (char *name, int from_tty)
lsi_open (char *name, int from_tty)
{
{
  int i;
  int i;
 
 
  /* Clear the LSI breakpoint table.  */
  /* Clear the LSI breakpoint table.  */
  for (i = 0; i < MAX_LSI_BREAKPOINTS; i++)
  for (i = 0; i < MAX_LSI_BREAKPOINTS; i++)
    lsi_breakpoints[i].type = BREAK_UNUSED;
    lsi_breakpoints[i].type = BREAK_UNUSED;
 
 
  common_open (&lsi_ops, name, from_tty, MON_LSI, "PMON> ");
  common_open (&lsi_ops, name, from_tty, MON_LSI, "PMON> ");
}
}
 
 
/* Close a connection to the remote board.  */
/* Close a connection to the remote board.  */
 
 
static void
static void
mips_close (int quitting)
mips_close (int quitting)
{
{
  if (mips_is_open)
  if (mips_is_open)
    {
    {
      /* Get the board out of remote debugging mode.  */
      /* Get the board out of remote debugging mode.  */
      (void) mips_exit_debug ();
      (void) mips_exit_debug ();
 
 
      close_ports ();
      close_ports ();
    }
    }
}
}
 
 
/* Detach from the remote board.  */
/* Detach from the remote board.  */
 
 
static void
static void
mips_detach (char *args, int from_tty)
mips_detach (char *args, int from_tty)
{
{
  if (args)
  if (args)
    error ("Argument given to \"detach\" when remotely debugging.");
    error ("Argument given to \"detach\" when remotely debugging.");
 
 
  pop_target ();
  pop_target ();
 
 
  mips_close (1);
  mips_close (1);
 
 
  if (from_tty)
  if (from_tty)
    printf_unfiltered ("Ending remote MIPS debugging.\n");
    printf_unfiltered ("Ending remote MIPS debugging.\n");
}
}
 
 
/* Tell the target board to resume.  This does not wait for a reply
/* Tell the target board to resume.  This does not wait for a reply
   from the board, except in the case of single-stepping on LSI boards,
   from the board, except in the case of single-stepping on LSI boards,
   where PMON does return a reply.  */
   where PMON does return a reply.  */
 
 
static void
static void
mips_resume (ptid_t ptid, int step, enum target_signal siggnal)
mips_resume (ptid_t ptid, int step, enum target_signal siggnal)
{
{
  int err;
  int err;
 
 
  /* LSI PMON requires returns a reply packet "0x1 s 0x0 0x57f" after
  /* LSI PMON requires returns a reply packet "0x1 s 0x0 0x57f" after
     a single step, so we wait for that.  */
     a single step, so we wait for that.  */
  mips_request (step ? 's' : 'c', 1, siggnal,
  mips_request (step ? 's' : 'c', 1, siggnal,
                mips_monitor == MON_LSI && step ? &err : (int *) NULL,
                mips_monitor == MON_LSI && step ? &err : (int *) NULL,
                mips_receive_wait, NULL);
                mips_receive_wait, NULL);
}
}
 
 
/* Return the signal corresponding to SIG, where SIG is the number which
/* Return the signal corresponding to SIG, where SIG is the number which
   the MIPS protocol uses for the signal.  */
   the MIPS protocol uses for the signal.  */
static enum target_signal
static enum target_signal
mips_signal_from_protocol (int sig)
mips_signal_from_protocol (int sig)
{
{
  /* We allow a few more signals than the IDT board actually returns, on
  /* We allow a few more signals than the IDT board actually returns, on
     the theory that there is at least *some* hope that perhaps the numbering
     the theory that there is at least *some* hope that perhaps the numbering
     for these signals is widely agreed upon.  */
     for these signals is widely agreed upon.  */
  if (sig <= 0
  if (sig <= 0
      || sig > 31)
      || sig > 31)
    return TARGET_SIGNAL_UNKNOWN;
    return TARGET_SIGNAL_UNKNOWN;
 
 
  /* Don't want to use target_signal_from_host because we are converting
  /* Don't want to use target_signal_from_host because we are converting
     from MIPS signal numbers, not host ones.  Our internal numbers
     from MIPS signal numbers, not host ones.  Our internal numbers
     match the MIPS numbers for the signals the board can return, which
     match the MIPS numbers for the signals the board can return, which
     are: SIGINT, SIGSEGV, SIGBUS, SIGILL, SIGFPE, SIGTRAP.  */
     are: SIGINT, SIGSEGV, SIGBUS, SIGILL, SIGFPE, SIGTRAP.  */
  return (enum target_signal) sig;
  return (enum target_signal) sig;
}
}
 
 
/* Wait until the remote stops, and return a wait status.  */
/* Wait until the remote stops, and return a wait status.  */
 
 
static ptid_t
static ptid_t
mips_wait (ptid_t ptid, struct target_waitstatus *status)
mips_wait (ptid_t ptid, struct target_waitstatus *status)
{
{
  int rstatus;
  int rstatus;
  int err;
  int err;
  char buff[DATA_MAXLEN];
  char buff[DATA_MAXLEN];
  int rpc, rfp, rsp;
  int rpc, rfp, rsp;
  char flags[20];
  char flags[20];
  int nfields;
  int nfields;
  int i;
  int i;
 
 
  interrupt_count = 0;
  interrupt_count = 0;
  hit_watchpoint = 0;
  hit_watchpoint = 0;
 
 
  /* If we have not sent a single step or continue command, then the
  /* If we have not sent a single step or continue command, then the
     board is waiting for us to do something.  Return a status
     board is waiting for us to do something.  Return a status
     indicating that it is stopped.  */
     indicating that it is stopped.  */
  if (!mips_need_reply)
  if (!mips_need_reply)
    {
    {
      status->kind = TARGET_WAITKIND_STOPPED;
      status->kind = TARGET_WAITKIND_STOPPED;
      status->value.sig = TARGET_SIGNAL_TRAP;
      status->value.sig = TARGET_SIGNAL_TRAP;
      return inferior_ptid;
      return inferior_ptid;
    }
    }
 
 
  /* No timeout; we sit here as long as the program continues to execute.  */
  /* No timeout; we sit here as long as the program continues to execute.  */
  mips_wait_flag = 1;
  mips_wait_flag = 1;
  rstatus = mips_request ('\000', 0, 0, &err, -1, buff);
  rstatus = mips_request ('\000', 0, 0, &err, -1, buff);
  mips_wait_flag = 0;
  mips_wait_flag = 0;
  if (err)
  if (err)
    mips_error ("Remote failure: %s", safe_strerror (errno));
    mips_error ("Remote failure: %s", safe_strerror (errno));
 
 
  /* On returning from a continue, the PMON monitor seems to start
  /* On returning from a continue, the PMON monitor seems to start
     echoing back the messages we send prior to sending back the
     echoing back the messages we send prior to sending back the
     ACK. The code can cope with this, but to try and avoid the
     ACK. The code can cope with this, but to try and avoid the
     unnecessary serial traffic, and "spurious" characters displayed
     unnecessary serial traffic, and "spurious" characters displayed
     to the user, we cheat and reset the debug protocol. The problems
     to the user, we cheat and reset the debug protocol. The problems
     seems to be caused by a check on the number of arguments, and the
     seems to be caused by a check on the number of arguments, and the
     command length, within the monitor causing it to echo the command
     command length, within the monitor causing it to echo the command
     as a bad packet. */
     as a bad packet. */
  if (mips_monitor == MON_PMON)
  if (mips_monitor == MON_PMON)
    {
    {
      mips_exit_debug ();
      mips_exit_debug ();
      mips_enter_debug ();
      mips_enter_debug ();
    }
    }
 
 
  /* See if we got back extended status.  If so, pick out the pc, fp, sp, etc... */
  /* See if we got back extended status.  If so, pick out the pc, fp, sp, etc... */
 
 
  nfields = sscanf (buff, "0x%*x %*c 0x%*x 0x%*x 0x%x 0x%x 0x%x 0x%*x %s",
  nfields = sscanf (buff, "0x%*x %*c 0x%*x 0x%*x 0x%x 0x%x 0x%x 0x%*x %s",
                    &rpc, &rfp, &rsp, flags);
                    &rpc, &rfp, &rsp, flags);
  if (nfields >= 3)
  if (nfields >= 3)
    {
    {
      struct regcache *regcache = get_current_regcache ();
      struct regcache *regcache = get_current_regcache ();
      struct gdbarch *gdbarch = get_regcache_arch (regcache);
      struct gdbarch *gdbarch = get_regcache_arch (regcache);
      char buf[MAX_REGISTER_SIZE];
      char buf[MAX_REGISTER_SIZE];
 
 
      store_unsigned_integer (buf,
      store_unsigned_integer (buf,
                              register_size
                              register_size
                                (gdbarch, gdbarch_pc_regnum (gdbarch)), rpc);
                                (gdbarch, gdbarch_pc_regnum (gdbarch)), rpc);
      regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch), buf);
      regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch), buf);
 
 
      store_unsigned_integer
      store_unsigned_integer
        (buf, register_size (gdbarch, gdbarch_pc_regnum (gdbarch)), rfp);
        (buf, register_size (gdbarch, gdbarch_pc_regnum (gdbarch)), rfp);
      regcache_raw_supply (regcache, 30, buf);  /* This register they are avoiding and so it is unnamed */
      regcache_raw_supply (regcache, 30, buf);  /* This register they are avoiding and so it is unnamed */
 
 
      store_unsigned_integer (buf, register_size (gdbarch,
      store_unsigned_integer (buf, register_size (gdbarch,
                              gdbarch_sp_regnum (gdbarch)), rsp);
                              gdbarch_sp_regnum (gdbarch)), rsp);
      regcache_raw_supply (regcache, gdbarch_sp_regnum (gdbarch), buf);
      regcache_raw_supply (regcache, gdbarch_sp_regnum (gdbarch), buf);
 
 
      store_unsigned_integer (buf,
      store_unsigned_integer (buf,
                              register_size (gdbarch,
                              register_size (gdbarch,
                                             gdbarch_deprecated_fp_regnum
                                             gdbarch_deprecated_fp_regnum
                                               (gdbarch)),
                                               (gdbarch)),
                              0);
                              0);
      regcache_raw_supply (regcache,
      regcache_raw_supply (regcache,
                           gdbarch_deprecated_fp_regnum (gdbarch), buf);
                           gdbarch_deprecated_fp_regnum (gdbarch), buf);
 
 
      if (nfields == 9)
      if (nfields == 9)
        {
        {
          int i;
          int i;
 
 
          for (i = 0; i <= 2; i++)
          for (i = 0; i <= 2; i++)
            if (flags[i] == 'r' || flags[i] == 'w')
            if (flags[i] == 'r' || flags[i] == 'w')
              hit_watchpoint = 1;
              hit_watchpoint = 1;
            else if (flags[i] == '\000')
            else if (flags[i] == '\000')
              break;
              break;
        }
        }
    }
    }
 
 
  if (strcmp (target_shortname, "lsi") == 0)
  if (strcmp (target_shortname, "lsi") == 0)
    {
    {
#if 0
#if 0
      /* If this is an LSI PMON target, see if we just hit a hardrdware watchpoint.
      /* If this is an LSI PMON target, see if we just hit a hardrdware watchpoint.
         Right now, PMON doesn't give us enough information to determine which
         Right now, PMON doesn't give us enough information to determine which
         breakpoint we hit.  So we have to look up the PC in our own table
         breakpoint we hit.  So we have to look up the PC in our own table
         of breakpoints, and if found, assume it's just a normal instruction
         of breakpoints, and if found, assume it's just a normal instruction
         fetch breakpoint, not a data watchpoint.  FIXME when PMON
         fetch breakpoint, not a data watchpoint.  FIXME when PMON
         provides some way to tell us what type of breakpoint it is.  */
         provides some way to tell us what type of breakpoint it is.  */
      int i;
      int i;
      CORE_ADDR pc = read_pc ();
      CORE_ADDR pc = read_pc ();
 
 
      hit_watchpoint = 1;
      hit_watchpoint = 1;
      for (i = 0; i < MAX_LSI_BREAKPOINTS; i++)
      for (i = 0; i < MAX_LSI_BREAKPOINTS; i++)
        {
        {
          if (lsi_breakpoints[i].addr == pc
          if (lsi_breakpoints[i].addr == pc
              && lsi_breakpoints[i].type == BREAK_FETCH)
              && lsi_breakpoints[i].type == BREAK_FETCH)
            {
            {
              hit_watchpoint = 0;
              hit_watchpoint = 0;
              break;
              break;
            }
            }
        }
        }
#else
#else
      /* If a data breakpoint was hit, PMON returns the following packet:
      /* If a data breakpoint was hit, PMON returns the following packet:
         0x1 c 0x0 0x57f 0x1
         0x1 c 0x0 0x57f 0x1
         The return packet from an ordinary breakpoint doesn't have the
         The return packet from an ordinary breakpoint doesn't have the
         extra 0x01 field tacked onto the end.  */
         extra 0x01 field tacked onto the end.  */
      if (nfields == 1 && rpc == 1)
      if (nfields == 1 && rpc == 1)
        hit_watchpoint = 1;
        hit_watchpoint = 1;
#endif
#endif
    }
    }
 
 
  /* NOTE: The following (sig) numbers are defined by PMON:
  /* NOTE: The following (sig) numbers are defined by PMON:
     SPP_SIGTRAP     5       breakpoint
     SPP_SIGTRAP     5       breakpoint
     SPP_SIGINT      2
     SPP_SIGINT      2
     SPP_SIGSEGV     11
     SPP_SIGSEGV     11
     SPP_SIGBUS      10
     SPP_SIGBUS      10
     SPP_SIGILL      4
     SPP_SIGILL      4
     SPP_SIGFPE      8
     SPP_SIGFPE      8
     SPP_SIGTERM     15 */
     SPP_SIGTERM     15 */
 
 
  /* Translate a MIPS waitstatus.  We use constants here rather than WTERMSIG
  /* Translate a MIPS waitstatus.  We use constants here rather than WTERMSIG
     and so on, because the constants we want here are determined by the
     and so on, because the constants we want here are determined by the
     MIPS protocol and have nothing to do with what host we are running on.  */
     MIPS protocol and have nothing to do with what host we are running on.  */
  if ((rstatus & 0xff) == 0)
  if ((rstatus & 0xff) == 0)
    {
    {
      status->kind = TARGET_WAITKIND_EXITED;
      status->kind = TARGET_WAITKIND_EXITED;
      status->value.integer = (((rstatus) >> 8) & 0xff);
      status->value.integer = (((rstatus) >> 8) & 0xff);
    }
    }
  else if ((rstatus & 0xff) == 0x7f)
  else if ((rstatus & 0xff) == 0x7f)
    {
    {
      status->kind = TARGET_WAITKIND_STOPPED;
      status->kind = TARGET_WAITKIND_STOPPED;
      status->value.sig = mips_signal_from_protocol (((rstatus) >> 8) & 0xff);
      status->value.sig = mips_signal_from_protocol (((rstatus) >> 8) & 0xff);
 
 
      /* If the stop PC is in the _exit function, assume
      /* If the stop PC is in the _exit function, assume
         we hit the 'break 0x3ff' instruction in _exit, so this
         we hit the 'break 0x3ff' instruction in _exit, so this
         is not a normal breakpoint.  */
         is not a normal breakpoint.  */
      if (strcmp (target_shortname, "lsi") == 0)
      if (strcmp (target_shortname, "lsi") == 0)
        {
        {
          char *func_name;
          char *func_name;
          CORE_ADDR func_start;
          CORE_ADDR func_start;
          CORE_ADDR pc = read_pc ();
          CORE_ADDR pc = read_pc ();
 
 
          find_pc_partial_function (pc, &func_name, &func_start, NULL);
          find_pc_partial_function (pc, &func_name, &func_start, NULL);
          if (func_name != NULL && strcmp (func_name, "_exit") == 0
          if (func_name != NULL && strcmp (func_name, "_exit") == 0
              && func_start == pc)
              && func_start == pc)
            status->kind = TARGET_WAITKIND_EXITED;
            status->kind = TARGET_WAITKIND_EXITED;
        }
        }
    }
    }
  else
  else
    {
    {
      status->kind = TARGET_WAITKIND_SIGNALLED;
      status->kind = TARGET_WAITKIND_SIGNALLED;
      status->value.sig = mips_signal_from_protocol (rstatus & 0x7f);
      status->value.sig = mips_signal_from_protocol (rstatus & 0x7f);
    }
    }
 
 
  return inferior_ptid;
  return inferior_ptid;
}
}
 
 
/* We have to map between the register numbers used by gdb and the
/* We have to map between the register numbers used by gdb and the
   register numbers used by the debugging protocol.  */
   register numbers used by the debugging protocol.  */
 
 
#define REGNO_OFFSET 96
#define REGNO_OFFSET 96
 
 
static int
static int
mips_map_regno (int regno)
mips_map_regno (int regno)
{
{
  if (regno < 32)
  if (regno < 32)
    return regno;
    return regno;
  if (regno >= mips_regnum (current_gdbarch)->fp0
  if (regno >= mips_regnum (current_gdbarch)->fp0
      && regno < mips_regnum (current_gdbarch)->fp0 + 32)
      && regno < mips_regnum (current_gdbarch)->fp0 + 32)
    return regno - mips_regnum (current_gdbarch)->fp0 + 32;
    return regno - mips_regnum (current_gdbarch)->fp0 + 32;
  else if (regno == mips_regnum (current_gdbarch)->pc)
  else if (regno == mips_regnum (current_gdbarch)->pc)
    return REGNO_OFFSET + 0;
    return REGNO_OFFSET + 0;
  else if (regno == mips_regnum (current_gdbarch)->cause)
  else if (regno == mips_regnum (current_gdbarch)->cause)
    return REGNO_OFFSET + 1;
    return REGNO_OFFSET + 1;
  else if (regno == mips_regnum (current_gdbarch)->hi)
  else if (regno == mips_regnum (current_gdbarch)->hi)
    return REGNO_OFFSET + 2;
    return REGNO_OFFSET + 2;
  else if (regno == mips_regnum (current_gdbarch)->lo)
  else if (regno == mips_regnum (current_gdbarch)->lo)
    return REGNO_OFFSET + 3;
    return REGNO_OFFSET + 3;
  else if (regno == mips_regnum (current_gdbarch)->fp_control_status)
  else if (regno == mips_regnum (current_gdbarch)->fp_control_status)
    return REGNO_OFFSET + 4;
    return REGNO_OFFSET + 4;
  else if (regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
  else if (regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
    return REGNO_OFFSET + 5;
    return REGNO_OFFSET + 5;
  else
  else
    /* FIXME: Is there a way to get the status register?  */
    /* FIXME: Is there a way to get the status register?  */
    return 0;
    return 0;
}
}
 
 
/* Fetch the remote registers.  */
/* Fetch the remote registers.  */
 
 
static void
static void
mips_fetch_registers (struct regcache *regcache, int regno)
mips_fetch_registers (struct regcache *regcache, int regno)
{
{
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
  unsigned LONGEST val;
  unsigned LONGEST val;
  int err;
  int err;
 
 
  if (regno == -1)
  if (regno == -1)
    {
    {
      for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
      for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
        mips_fetch_registers (regcache, regno);
        mips_fetch_registers (regcache, regno);
      return;
      return;
    }
    }
 
 
  if (regno == gdbarch_deprecated_fp_regnum (gdbarch)
  if (regno == gdbarch_deprecated_fp_regnum (gdbarch)
      || regno == MIPS_ZERO_REGNUM)
      || regno == MIPS_ZERO_REGNUM)
    /* gdbarch_deprecated_fp_regnum on the mips is a hack which is just
    /* gdbarch_deprecated_fp_regnum on the mips is a hack which is just
       supposed to read zero (see also mips-nat.c).  */
       supposed to read zero (see also mips-nat.c).  */
    val = 0;
    val = 0;
  else
  else
    {
    {
      /* If PMON doesn't support this register, don't waste serial
      /* If PMON doesn't support this register, don't waste serial
         bandwidth trying to read it.  */
         bandwidth trying to read it.  */
      int pmon_reg = mips_map_regno (regno);
      int pmon_reg = mips_map_regno (regno);
      if (regno != 0 && pmon_reg == 0)
      if (regno != 0 && pmon_reg == 0)
        val = 0;
        val = 0;
      else
      else
        {
        {
          /* Unfortunately the PMON version in the Vr4300 board has been
          /* Unfortunately the PMON version in the Vr4300 board has been
             compiled without the 64bit register access commands. This
             compiled without the 64bit register access commands. This
             means we cannot get hold of the full register width. */
             means we cannot get hold of the full register width. */
          if (mips_monitor == MON_DDB)
          if (mips_monitor == MON_DDB)
            val = (unsigned) mips_request ('t', pmon_reg, 0,
            val = (unsigned) mips_request ('t', pmon_reg, 0,
                                           &err, mips_receive_wait, NULL);
                                           &err, mips_receive_wait, NULL);
          else
          else
            val = mips_request ('r', pmon_reg, 0,
            val = mips_request ('r', pmon_reg, 0,
                                &err, mips_receive_wait, NULL);
                                &err, mips_receive_wait, NULL);
          if (err)
          if (err)
            mips_error ("Can't read register %d: %s", regno,
            mips_error ("Can't read register %d: %s", regno,
                        safe_strerror (errno));
                        safe_strerror (errno));
        }
        }
    }
    }
 
 
  {
  {
    char buf[MAX_REGISTER_SIZE];
    char buf[MAX_REGISTER_SIZE];
 
 
    /* We got the number the register holds, but gdb expects to see a
    /* We got the number the register holds, but gdb expects to see a
       value in the target byte ordering.  */
       value in the target byte ordering.  */
    store_unsigned_integer (buf, register_size (gdbarch, regno), val);
    store_unsigned_integer (buf, register_size (gdbarch, regno), val);
    regcache_raw_supply (regcache, regno, buf);
    regcache_raw_supply (regcache, regno, buf);
  }
  }
}
}
 
 
/* Prepare to store registers.  The MIPS protocol can store individual
/* Prepare to store registers.  The MIPS protocol can store individual
   registers, so this function doesn't have to do anything.  */
   registers, so this function doesn't have to do anything.  */
 
 
static void
static void
mips_prepare_to_store (struct regcache *regcache)
mips_prepare_to_store (struct regcache *regcache)
{
{
}
}
 
 
/* Store remote register(s).  */
/* Store remote register(s).  */
 
 
static void
static void
mips_store_registers (struct regcache *regcache, int regno)
mips_store_registers (struct regcache *regcache, int regno)
{
{
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
  ULONGEST val;
  ULONGEST val;
  int err;
  int err;
 
 
  if (regno == -1)
  if (regno == -1)
    {
    {
      for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
      for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
        mips_store_registers (regcache, regno);
        mips_store_registers (regcache, regno);
      return;
      return;
    }
    }
 
 
  regcache_cooked_read_unsigned (regcache, regno, &val);
  regcache_cooked_read_unsigned (regcache, regno, &val);
  mips_request ('R', mips_map_regno (regno), val,
  mips_request ('R', mips_map_regno (regno), val,
                &err, mips_receive_wait, NULL);
                &err, mips_receive_wait, NULL);
  if (err)
  if (err)
    mips_error ("Can't write register %d: %s", regno, safe_strerror (errno));
    mips_error ("Can't write register %d: %s", regno, safe_strerror (errno));
}
}
 
 
/* Fetch a word from the target board.  */
/* Fetch a word from the target board.  */
 
 
static unsigned int
static unsigned int
mips_fetch_word (CORE_ADDR addr)
mips_fetch_word (CORE_ADDR addr)
{
{
  unsigned int val;
  unsigned int val;
  int err;
  int err;
 
 
  val = mips_request ('d', addr, 0, &err, mips_receive_wait, NULL);
  val = mips_request ('d', addr, 0, &err, mips_receive_wait, NULL);
  if (err)
  if (err)
    {
    {
      /* Data space failed; try instruction space.  */
      /* Data space failed; try instruction space.  */
      val = mips_request ('i', addr, 0, &err,
      val = mips_request ('i', addr, 0, &err,
                          mips_receive_wait, NULL);
                          mips_receive_wait, NULL);
      if (err)
      if (err)
        mips_error ("Can't read address 0x%s: %s",
        mips_error ("Can't read address 0x%s: %s",
                    paddr_nz (addr), safe_strerror (errno));
                    paddr_nz (addr), safe_strerror (errno));
    }
    }
  return val;
  return val;
}
}
 
 
/* Store a word to the target board.  Returns errno code or zero for
/* Store a word to the target board.  Returns errno code or zero for
   success.  If OLD_CONTENTS is non-NULL, put the old contents of that
   success.  If OLD_CONTENTS is non-NULL, put the old contents of that
   memory location there.  */
   memory location there.  */
 
 
/* FIXME! make sure only 32-bit quantities get stored! */
/* FIXME! make sure only 32-bit quantities get stored! */
static int
static int
mips_store_word (CORE_ADDR addr, unsigned int val, char *old_contents)
mips_store_word (CORE_ADDR addr, unsigned int val, char *old_contents)
{
{
  int err;
  int err;
  unsigned int oldcontents;
  unsigned int oldcontents;
 
 
  oldcontents = mips_request ('D', addr, val, &err,
  oldcontents = mips_request ('D', addr, val, &err,
                              mips_receive_wait, NULL);
                              mips_receive_wait, NULL);
  if (err)
  if (err)
    {
    {
      /* Data space failed; try instruction space.  */
      /* Data space failed; try instruction space.  */
      oldcontents = mips_request ('I', addr, val, &err,
      oldcontents = mips_request ('I', addr, val, &err,
                                  mips_receive_wait, NULL);
                                  mips_receive_wait, NULL);
      if (err)
      if (err)
        return errno;
        return errno;
    }
    }
  if (old_contents != NULL)
  if (old_contents != NULL)
    store_unsigned_integer (old_contents, 4, oldcontents);
    store_unsigned_integer (old_contents, 4, oldcontents);
  return 0;
  return 0;
}
}
 
 
/* Read or write LEN bytes from inferior memory at MEMADDR,
/* Read or write LEN bytes from inferior memory at MEMADDR,
   transferring to or from debugger address MYADDR.  Write to inferior
   transferring to or from debugger address MYADDR.  Write to inferior
   if SHOULD_WRITE is nonzero.  Returns length of data written or
   if SHOULD_WRITE is nonzero.  Returns length of data written or
   read; 0 for error.  Note that protocol gives us the correct value
   read; 0 for error.  Note that protocol gives us the correct value
   for a longword, since it transfers values in ASCII.  We want the
   for a longword, since it transfers values in ASCII.  We want the
   byte values, so we have to swap the longword values.  */
   byte values, so we have to swap the longword values.  */
 
 
static int mask_address_p = 1;
static int mask_address_p = 1;
 
 
static int
static int
mips_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write,
mips_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write,
                  struct mem_attrib *attrib, struct target_ops *target)
                  struct mem_attrib *attrib, struct target_ops *target)
{
{
  int i;
  int i;
  CORE_ADDR addr;
  CORE_ADDR addr;
  int count;
  int count;
  char *buffer;
  char *buffer;
  int status;
  int status;
 
 
  /* PMON targets do not cope well with 64 bit addresses.  Mask the
  /* PMON targets do not cope well with 64 bit addresses.  Mask the
     value down to 32 bits. */
     value down to 32 bits. */
  if (mask_address_p)
  if (mask_address_p)
    memaddr &= (CORE_ADDR) 0xffffffff;
    memaddr &= (CORE_ADDR) 0xffffffff;
 
 
  /* Round starting address down to longword boundary.  */
  /* Round starting address down to longword boundary.  */
  addr = memaddr & ~3;
  addr = memaddr & ~3;
  /* Round ending address up; get number of longwords that makes.  */
  /* Round ending address up; get number of longwords that makes.  */
  count = (((memaddr + len) - addr) + 3) / 4;
  count = (((memaddr + len) - addr) + 3) / 4;
  /* Allocate buffer of that many longwords.  */
  /* Allocate buffer of that many longwords.  */
  buffer = alloca (count * 4);
  buffer = alloca (count * 4);
 
 
  if (write)
  if (write)
    {
    {
      /* Fill start and end extra bytes of buffer with existing data.  */
      /* Fill start and end extra bytes of buffer with existing data.  */
      if (addr != memaddr || len < 4)
      if (addr != memaddr || len < 4)
        {
        {
          /* Need part of initial word -- fetch it.  */
          /* Need part of initial word -- fetch it.  */
          store_unsigned_integer (&buffer[0], 4, mips_fetch_word (addr));
          store_unsigned_integer (&buffer[0], 4, mips_fetch_word (addr));
        }
        }
 
 
      if (count > 1)
      if (count > 1)
        {
        {
          /* Need part of last word -- fetch it.  FIXME: we do this even
          /* Need part of last word -- fetch it.  FIXME: we do this even
             if we don't need it.  */
             if we don't need it.  */
          store_unsigned_integer (&buffer[(count - 1) * 4], 4,
          store_unsigned_integer (&buffer[(count - 1) * 4], 4,
                                  mips_fetch_word (addr + (count - 1) * 4));
                                  mips_fetch_word (addr + (count - 1) * 4));
        }
        }
 
 
      /* Copy data to be written over corresponding part of buffer */
      /* Copy data to be written over corresponding part of buffer */
 
 
      memcpy ((char *) buffer + (memaddr & 3), myaddr, len);
      memcpy ((char *) buffer + (memaddr & 3), myaddr, len);
 
 
      /* Write the entire buffer.  */
      /* Write the entire buffer.  */
 
 
      for (i = 0; i < count; i++, addr += 4)
      for (i = 0; i < count; i++, addr += 4)
        {
        {
          status = mips_store_word (addr,
          status = mips_store_word (addr,
                               extract_unsigned_integer (&buffer[i * 4], 4),
                               extract_unsigned_integer (&buffer[i * 4], 4),
                                    NULL);
                                    NULL);
          /* Report each kilobyte (we download 32-bit words at a time) */
          /* Report each kilobyte (we download 32-bit words at a time) */
          if (i % 256 == 255)
          if (i % 256 == 255)
            {
            {
              printf_unfiltered ("*");
              printf_unfiltered ("*");
              gdb_flush (gdb_stdout);
              gdb_flush (gdb_stdout);
            }
            }
          if (status)
          if (status)
            {
            {
              errno = status;
              errno = status;
              return 0;
              return 0;
            }
            }
          /* FIXME: Do we want a QUIT here?  */
          /* FIXME: Do we want a QUIT here?  */
        }
        }
      if (count >= 256)
      if (count >= 256)
        printf_unfiltered ("\n");
        printf_unfiltered ("\n");
    }
    }
  else
  else
    {
    {
      /* Read all the longwords */
      /* Read all the longwords */
      for (i = 0; i < count; i++, addr += 4)
      for (i = 0; i < count; i++, addr += 4)
        {
        {
          store_unsigned_integer (&buffer[i * 4], 4, mips_fetch_word (addr));
          store_unsigned_integer (&buffer[i * 4], 4, mips_fetch_word (addr));
          QUIT;
          QUIT;
        }
        }
 
 
      /* Copy appropriate bytes out of the buffer.  */
      /* Copy appropriate bytes out of the buffer.  */
      memcpy (myaddr, buffer + (memaddr & 3), len);
      memcpy (myaddr, buffer + (memaddr & 3), len);
    }
    }
  return len;
  return len;
}
}
 
 
/* Print info on this target.  */
/* Print info on this target.  */
 
 
static void
static void
mips_files_info (struct target_ops *ignore)
mips_files_info (struct target_ops *ignore)
{
{
  printf_unfiltered ("Debugging a MIPS board over a serial line.\n");
  printf_unfiltered ("Debugging a MIPS board over a serial line.\n");
}
}
 
 
/* Kill the process running on the board.  This will actually only
/* Kill the process running on the board.  This will actually only
   work if we are doing remote debugging over the console input.  I
   work if we are doing remote debugging over the console input.  I
   think that if IDT/sim had the remote debug interrupt enabled on the
   think that if IDT/sim had the remote debug interrupt enabled on the
   right port, we could interrupt the process with a break signal.  */
   right port, we could interrupt the process with a break signal.  */
 
 
static void
static void
mips_kill (void)
mips_kill (void)
{
{
  if (!mips_wait_flag)
  if (!mips_wait_flag)
    return;
    return;
 
 
  interrupt_count++;
  interrupt_count++;
 
 
  if (interrupt_count >= 2)
  if (interrupt_count >= 2)
    {
    {
      interrupt_count = 0;
      interrupt_count = 0;
 
 
      target_terminal_ours ();
      target_terminal_ours ();
 
 
      if (query ("Interrupted while waiting for the program.\n\
      if (query ("Interrupted while waiting for the program.\n\
Give up (and stop debugging it)? "))
Give up (and stop debugging it)? "))
        {
        {
          /* Clean up in such a way that mips_close won't try to talk to the
          /* Clean up in such a way that mips_close won't try to talk to the
             board (it almost surely won't work since we weren't able to talk to
             board (it almost surely won't work since we weren't able to talk to
             it).  */
             it).  */
          mips_wait_flag = 0;
          mips_wait_flag = 0;
          close_ports ();
          close_ports ();
 
 
          printf_unfiltered ("Ending remote MIPS debugging.\n");
          printf_unfiltered ("Ending remote MIPS debugging.\n");
          target_mourn_inferior ();
          target_mourn_inferior ();
 
 
          deprecated_throw_reason (RETURN_QUIT);
          deprecated_throw_reason (RETURN_QUIT);
        }
        }
 
 
      target_terminal_inferior ();
      target_terminal_inferior ();
    }
    }
 
 
  if (remote_debug > 0)
  if (remote_debug > 0)
    printf_unfiltered ("Sending break\n");
    printf_unfiltered ("Sending break\n");
 
 
  serial_send_break (mips_desc);
  serial_send_break (mips_desc);
 
 
#if 0
#if 0
  if (mips_is_open)
  if (mips_is_open)
    {
    {
      char cc;
      char cc;
 
 
      /* Send a ^C.  */
      /* Send a ^C.  */
      cc = '\003';
      cc = '\003';
      serial_write (mips_desc, &cc, 1);
      serial_write (mips_desc, &cc, 1);
      sleep (1);
      sleep (1);
      target_mourn_inferior ();
      target_mourn_inferior ();
    }
    }
#endif
#endif
}
}
 
 
/* Start running on the target board.  */
/* Start running on the target board.  */
 
 
static void
static void
mips_create_inferior (char *execfile, char *args, char **env, int from_tty)
mips_create_inferior (char *execfile, char *args, char **env, int from_tty)
{
{
  CORE_ADDR entry_pt;
  CORE_ADDR entry_pt;
 
 
  if (args && *args)
  if (args && *args)
    {
    {
      warning ("\
      warning ("\
Can't pass arguments to remote MIPS board; arguments ignored.");
Can't pass arguments to remote MIPS board; arguments ignored.");
      /* And don't try to use them on the next "run" command.  */
      /* And don't try to use them on the next "run" command.  */
      execute_command ("set args", 0);
      execute_command ("set args", 0);
    }
    }
 
 
  if (execfile == 0 || exec_bfd == 0)
  if (execfile == 0 || exec_bfd == 0)
    error ("No executable file specified");
    error ("No executable file specified");
 
 
  entry_pt = (CORE_ADDR) bfd_get_start_address (exec_bfd);
  entry_pt = (CORE_ADDR) bfd_get_start_address (exec_bfd);
 
 
  init_wait_for_inferior ();
  init_wait_for_inferior ();
 
 
  /* FIXME: Should we set inferior_ptid here?  */
  /* FIXME: Should we set inferior_ptid here?  */
 
 
  write_pc (entry_pt);
  write_pc (entry_pt);
}
}
 
 
/* Clean up after a process.  Actually nothing to do.  */
/* Clean up after a process.  Actually nothing to do.  */
 
 
static void
static void
mips_mourn_inferior (void)
mips_mourn_inferior (void)
{
{
  if (current_ops != NULL)
  if (current_ops != NULL)
    unpush_target (current_ops);
    unpush_target (current_ops);
  generic_mourn_inferior ();
  generic_mourn_inferior ();
}
}


/* We can write a breakpoint and read the shadow contents in one
/* We can write a breakpoint and read the shadow contents in one
   operation.  */
   operation.  */
 
 
/* Insert a breakpoint.  On targets that don't have built-in
/* Insert a breakpoint.  On targets that don't have built-in
   breakpoint support, we read the contents of the target location and
   breakpoint support, we read the contents of the target location and
   stash it, then overwrite it with a breakpoint instruction.  ADDR is
   stash it, then overwrite it with a breakpoint instruction.  ADDR is
   the target location in the target machine.  BPT is the breakpoint
   the target location in the target machine.  BPT is the breakpoint
   being inserted or removed, which contains memory for saving the
   being inserted or removed, which contains memory for saving the
   target contents.  */
   target contents.  */
 
 
static int
static int
mips_insert_breakpoint (struct bp_target_info *bp_tgt)
mips_insert_breakpoint (struct bp_target_info *bp_tgt)
{
{
  if (monitor_supports_breakpoints)
  if (monitor_supports_breakpoints)
    return mips_set_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE,
    return mips_set_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE,
                                BREAK_FETCH);
                                BREAK_FETCH);
  else
  else
    return memory_insert_breakpoint (bp_tgt);
    return memory_insert_breakpoint (bp_tgt);
}
}
 
 
static int
static int
mips_remove_breakpoint (struct bp_target_info *bp_tgt)
mips_remove_breakpoint (struct bp_target_info *bp_tgt)
{
{
  if (monitor_supports_breakpoints)
  if (monitor_supports_breakpoints)
    return mips_clear_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE,
    return mips_clear_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE,
                                  BREAK_FETCH);
                                  BREAK_FETCH);
  else
  else
    return memory_remove_breakpoint (bp_tgt);
    return memory_remove_breakpoint (bp_tgt);
}
}
 
 
/* Tell whether this target can support a hardware breakpoint.  CNT
/* Tell whether this target can support a hardware breakpoint.  CNT
   is the number of hardware breakpoints already installed.  This
   is the number of hardware breakpoints already installed.  This
   implements the TARGET_CAN_USE_HARDWARE_WATCHPOINT macro.  */
   implements the TARGET_CAN_USE_HARDWARE_WATCHPOINT macro.  */
 
 
int
int
mips_can_use_watchpoint (int type, int cnt, int othertype)
mips_can_use_watchpoint (int type, int cnt, int othertype)
{
{
  return cnt < MAX_LSI_BREAKPOINTS && strcmp (target_shortname, "lsi") == 0;
  return cnt < MAX_LSI_BREAKPOINTS && strcmp (target_shortname, "lsi") == 0;
}
}
 
 
 
 
/* Compute a don't care mask for the region bounding ADDR and ADDR + LEN - 1.
/* Compute a don't care mask for the region bounding ADDR and ADDR + LEN - 1.
   This is used for memory ref breakpoints.  */
   This is used for memory ref breakpoints.  */
 
 
static unsigned long
static unsigned long
calculate_mask (CORE_ADDR addr, int len)
calculate_mask (CORE_ADDR addr, int len)
{
{
  unsigned long mask;
  unsigned long mask;
  int i;
  int i;
 
 
  mask = addr ^ (addr + len - 1);
  mask = addr ^ (addr + len - 1);
 
 
  for (i = 32; i >= 0; i--)
  for (i = 32; i >= 0; i--)
    if (mask == 0)
    if (mask == 0)
      break;
      break;
    else
    else
      mask >>= 1;
      mask >>= 1;
 
 
  mask = (unsigned long) 0xffffffff >> i;
  mask = (unsigned long) 0xffffffff >> i;
 
 
  return mask;
  return mask;
}
}
 
 
 
 
/* Set a data watchpoint.  ADDR and LEN should be obvious.  TYPE is 0
/* Set a data watchpoint.  ADDR and LEN should be obvious.  TYPE is 0
   for a write watchpoint, 1 for a read watchpoint, or 2 for a read/write
   for a write watchpoint, 1 for a read watchpoint, or 2 for a read/write
   watchpoint. */
   watchpoint. */
 
 
int
int
mips_insert_watchpoint (CORE_ADDR addr, int len, int type)
mips_insert_watchpoint (CORE_ADDR addr, int len, int type)
{
{
  if (mips_set_breakpoint (addr, len, type))
  if (mips_set_breakpoint (addr, len, type))
    return -1;
    return -1;
 
 
  return 0;
  return 0;
}
}
 
 
int
int
mips_remove_watchpoint (CORE_ADDR addr, int len, int type)
mips_remove_watchpoint (CORE_ADDR addr, int len, int type)
{
{
  if (mips_clear_breakpoint (addr, len, type))
  if (mips_clear_breakpoint (addr, len, type))
    return -1;
    return -1;
 
 
  return 0;
  return 0;
}
}
 
 
int
int
mips_stopped_by_watchpoint (void)
mips_stopped_by_watchpoint (void)
{
{
  return hit_watchpoint;
  return hit_watchpoint;
}
}
 
 
 
 
/* Insert a breakpoint.  */
/* Insert a breakpoint.  */
 
 
static int
static int
mips_set_breakpoint (CORE_ADDR addr, int len, enum break_type type)
mips_set_breakpoint (CORE_ADDR addr, int len, enum break_type type)
{
{
  return mips_common_breakpoint (1, addr, len, type);
  return mips_common_breakpoint (1, addr, len, type);
}
}
 
 
 
 
/* Clear a breakpoint.  */
/* Clear a breakpoint.  */
 
 
static int
static int
mips_clear_breakpoint (CORE_ADDR addr, int len, enum break_type type)
mips_clear_breakpoint (CORE_ADDR addr, int len, enum break_type type)
{
{
  return mips_common_breakpoint (0, addr, len, type);
  return mips_common_breakpoint (0, addr, len, type);
}
}
 
 
 
 
/* Check the error code from the return packet for an LSI breakpoint
/* Check the error code from the return packet for an LSI breakpoint
   command.  If there's no error, just return 0.  If it's a warning,
   command.  If there's no error, just return 0.  If it's a warning,
   print the warning text and return 0.  If it's an error, print
   print the warning text and return 0.  If it's an error, print
   the error text and return 1.  <ADDR> is the address of the breakpoint
   the error text and return 1.  <ADDR> is the address of the breakpoint
   that was being set.  <RERRFLG> is the error code returned by PMON.
   that was being set.  <RERRFLG> is the error code returned by PMON.
   This is a helper function for mips_common_breakpoint.  */
   This is a helper function for mips_common_breakpoint.  */
 
 
static int
static int
mips_check_lsi_error (CORE_ADDR addr, int rerrflg)
mips_check_lsi_error (CORE_ADDR addr, int rerrflg)
{
{
  struct lsi_error *err;
  struct lsi_error *err;
  char *saddr = paddr_nz (addr);        /* printable address string */
  char *saddr = paddr_nz (addr);        /* printable address string */
 
 
  if (rerrflg == 0)              /* no error */
  if (rerrflg == 0)              /* no error */
    return 0;
    return 0;
 
 
  /* Warnings can be ORed together, so check them all.  */
  /* Warnings can be ORed together, so check them all.  */
  if (rerrflg & W_WARN)
  if (rerrflg & W_WARN)
    {
    {
      if (monitor_warnings)
      if (monitor_warnings)
        {
        {
          int found = 0;
          int found = 0;
          for (err = lsi_warning_table; err->code != 0; err++)
          for (err = lsi_warning_table; err->code != 0; err++)
            {
            {
              if ((err->code & rerrflg) == err->code)
              if ((err->code & rerrflg) == err->code)
                {
                {
                  found = 1;
                  found = 1;
                  fprintf_unfiltered (gdb_stderr, "\
                  fprintf_unfiltered (gdb_stderr, "\
mips_common_breakpoint (0x%s): Warning: %s\n",
mips_common_breakpoint (0x%s): Warning: %s\n",
                                      saddr,
                                      saddr,
                                      err->string);
                                      err->string);
                }
                }
            }
            }
          if (!found)
          if (!found)
            fprintf_unfiltered (gdb_stderr, "\
            fprintf_unfiltered (gdb_stderr, "\
mips_common_breakpoint (0x%s): Unknown warning: 0x%x\n",
mips_common_breakpoint (0x%s): Unknown warning: 0x%x\n",
                                saddr,
                                saddr,
                                rerrflg);
                                rerrflg);
        }
        }
      return 0;
      return 0;
    }
    }
 
 
  /* Errors are unique, i.e. can't be ORed together.  */
  /* Errors are unique, i.e. can't be ORed together.  */
  for (err = lsi_error_table; err->code != 0; err++)
  for (err = lsi_error_table; err->code != 0; err++)
    {
    {
      if ((err->code & rerrflg) == err->code)
      if ((err->code & rerrflg) == err->code)
        {
        {
          fprintf_unfiltered (gdb_stderr, "\
          fprintf_unfiltered (gdb_stderr, "\
mips_common_breakpoint (0x%s): Error: %s\n",
mips_common_breakpoint (0x%s): Error: %s\n",
                              saddr,
                              saddr,
                              err->string);
                              err->string);
          return 1;
          return 1;
        }
        }
    }
    }
  fprintf_unfiltered (gdb_stderr, "\
  fprintf_unfiltered (gdb_stderr, "\
mips_common_breakpoint (0x%s): Unknown error: 0x%x\n",
mips_common_breakpoint (0x%s): Unknown error: 0x%x\n",
                      saddr,
                      saddr,
                      rerrflg);
                      rerrflg);
  return 1;
  return 1;
}
}
 
 
 
 
/* This routine sends a breakpoint command to the remote target.
/* This routine sends a breakpoint command to the remote target.
 
 
   <SET> is 1 if setting a breakpoint, or 0 if clearing a breakpoint.
   <SET> is 1 if setting a breakpoint, or 0 if clearing a breakpoint.
   <ADDR> is the address of the breakpoint.
   <ADDR> is the address of the breakpoint.
   <LEN> the length of the region to break on.
   <LEN> the length of the region to break on.
   <TYPE> is the type of breakpoint:
   <TYPE> is the type of breakpoint:
   0 = write                    (BREAK_WRITE)
   0 = write                    (BREAK_WRITE)
   1 = read                     (BREAK_READ)
   1 = read                     (BREAK_READ)
   2 = read/write               (BREAK_ACCESS)
   2 = read/write               (BREAK_ACCESS)
   3 = instruction fetch        (BREAK_FETCH)
   3 = instruction fetch        (BREAK_FETCH)
 
 
   Return 0 if successful; otherwise 1.  */
   Return 0 if successful; otherwise 1.  */
 
 
static int
static int
mips_common_breakpoint (int set, CORE_ADDR addr, int len, enum break_type type)
mips_common_breakpoint (int set, CORE_ADDR addr, int len, enum break_type type)
{
{
  char buf[DATA_MAXLEN + 1];
  char buf[DATA_MAXLEN + 1];
  char cmd, rcmd;
  char cmd, rcmd;
  int rpid, rerrflg, rresponse, rlen;
  int rpid, rerrflg, rresponse, rlen;
  int nfields;
  int nfields;
 
 
  addr = gdbarch_addr_bits_remove (current_gdbarch, addr);
  addr = gdbarch_addr_bits_remove (current_gdbarch, addr);
 
 
  if (mips_monitor == MON_LSI)
  if (mips_monitor == MON_LSI)
    {
    {
      if (set == 0)              /* clear breakpoint */
      if (set == 0)              /* clear breakpoint */
        {
        {
          /* The LSI PMON "clear breakpoint" has this form:
          /* The LSI PMON "clear breakpoint" has this form:
             <pid> 'b' <bptn> 0x0
             <pid> 'b' <bptn> 0x0
             reply:
             reply:
             <pid> 'b' 0x0 <code>
             <pid> 'b' 0x0 <code>
 
 
             <bptn> is a breakpoint number returned by an earlier 'B' command.
             <bptn> is a breakpoint number returned by an earlier 'B' command.
             Possible return codes: OK, E_BPT.  */
             Possible return codes: OK, E_BPT.  */
 
 
          int i;
          int i;
 
 
          /* Search for the breakpoint in the table.  */
          /* Search for the breakpoint in the table.  */
          for (i = 0; i < MAX_LSI_BREAKPOINTS; i++)
          for (i = 0; i < MAX_LSI_BREAKPOINTS; i++)
            if (lsi_breakpoints[i].type == type
            if (lsi_breakpoints[i].type == type
                && lsi_breakpoints[i].addr == addr
                && lsi_breakpoints[i].addr == addr
                && lsi_breakpoints[i].len == len)
                && lsi_breakpoints[i].len == len)
              break;
              break;
 
 
          /* Clear the table entry and tell PMON to clear the breakpoint.  */
          /* Clear the table entry and tell PMON to clear the breakpoint.  */
          if (i == MAX_LSI_BREAKPOINTS)
          if (i == MAX_LSI_BREAKPOINTS)
            {
            {
              warning ("\
              warning ("\
mips_common_breakpoint: Attempt to clear bogus breakpoint at %s\n",
mips_common_breakpoint: Attempt to clear bogus breakpoint at %s\n",
                       paddr_nz (addr));
                       paddr_nz (addr));
              return 1;
              return 1;
            }
            }
 
 
          lsi_breakpoints[i].type = BREAK_UNUSED;
          lsi_breakpoints[i].type = BREAK_UNUSED;
          sprintf (buf, "0x0 b 0x%x 0x0", i);
          sprintf (buf, "0x0 b 0x%x 0x0", i);
          mips_send_packet (buf, 1);
          mips_send_packet (buf, 1);
 
 
          rlen = mips_receive_packet (buf, 1, mips_receive_wait);
          rlen = mips_receive_packet (buf, 1, mips_receive_wait);
          buf[rlen] = '\0';
          buf[rlen] = '\0';
 
 
          nfields = sscanf (buf, "0x%x b 0x0 0x%x", &rpid, &rerrflg);
          nfields = sscanf (buf, "0x%x b 0x0 0x%x", &rpid, &rerrflg);
          if (nfields != 2)
          if (nfields != 2)
            mips_error ("\
            mips_error ("\
mips_common_breakpoint: Bad response from remote board: %s",
mips_common_breakpoint: Bad response from remote board: %s",
                        buf);
                        buf);
 
 
          return (mips_check_lsi_error (addr, rerrflg));
          return (mips_check_lsi_error (addr, rerrflg));
        }
        }
      else
      else
        /* set a breakpoint */
        /* set a breakpoint */
        {
        {
          /* The LSI PMON "set breakpoint" command has this form:
          /* The LSI PMON "set breakpoint" command has this form:
             <pid> 'B' <addr> 0x0
             <pid> 'B' <addr> 0x0
             reply:
             reply:
             <pid> 'B' <bptn> <code>
             <pid> 'B' <bptn> <code>
 
 
             The "set data breakpoint" command has this form:
             The "set data breakpoint" command has this form:
 
 
             <pid> 'A' <addr1> <type> [<addr2>  [<value>]]
             <pid> 'A' <addr1> <type> [<addr2>  [<value>]]
 
 
             where: type= "0x1" = read
             where: type= "0x1" = read
             "0x2" = write
             "0x2" = write
             "0x3" = access (read or write)
             "0x3" = access (read or write)
 
 
             The reply returns two values:
             The reply returns two values:
             bptn - a breakpoint number, which is a small integer with
             bptn - a breakpoint number, which is a small integer with
             possible values of zero through 255.
             possible values of zero through 255.
             code - an error return code, a value of zero indicates a
             code - an error return code, a value of zero indicates a
             succesful completion, other values indicate various
             succesful completion, other values indicate various
             errors and warnings.
             errors and warnings.
 
 
             Possible return codes: OK, W_QAL, E_QAL, E_OUT, E_NON.
             Possible return codes: OK, W_QAL, E_QAL, E_OUT, E_NON.
 
 
           */
           */
 
 
          if (type == BREAK_FETCH)      /* instruction breakpoint */
          if (type == BREAK_FETCH)      /* instruction breakpoint */
            {
            {
              cmd = 'B';
              cmd = 'B';
              sprintf (buf, "0x0 B 0x%s 0x0", paddr_nz (addr));
              sprintf (buf, "0x0 B 0x%s 0x0", paddr_nz (addr));
            }
            }
          else
          else
            /* watchpoint */
            /* watchpoint */
            {
            {
              cmd = 'A';
              cmd = 'A';
              sprintf (buf, "0x0 A 0x%s 0x%x 0x%s", paddr_nz (addr),
              sprintf (buf, "0x0 A 0x%s 0x%x 0x%s", paddr_nz (addr),
                     type == BREAK_READ ? 1 : (type == BREAK_WRITE ? 2 : 3),
                     type == BREAK_READ ? 1 : (type == BREAK_WRITE ? 2 : 3),
                       paddr_nz (addr + len - 1));
                       paddr_nz (addr + len - 1));
            }
            }
          mips_send_packet (buf, 1);
          mips_send_packet (buf, 1);
 
 
          rlen = mips_receive_packet (buf, 1, mips_receive_wait);
          rlen = mips_receive_packet (buf, 1, mips_receive_wait);
          buf[rlen] = '\0';
          buf[rlen] = '\0';
 
 
          nfields = sscanf (buf, "0x%x %c 0x%x 0x%x",
          nfields = sscanf (buf, "0x%x %c 0x%x 0x%x",
                            &rpid, &rcmd, &rresponse, &rerrflg);
                            &rpid, &rcmd, &rresponse, &rerrflg);
          if (nfields != 4 || rcmd != cmd || rresponse > 255)
          if (nfields != 4 || rcmd != cmd || rresponse > 255)
            mips_error ("\
            mips_error ("\
mips_common_breakpoint: Bad response from remote board: %s",
mips_common_breakpoint: Bad response from remote board: %s",
                        buf);
                        buf);
 
 
          if (rerrflg != 0)
          if (rerrflg != 0)
            if (mips_check_lsi_error (addr, rerrflg))
            if (mips_check_lsi_error (addr, rerrflg))
              return 1;
              return 1;
 
 
          /* rresponse contains PMON's breakpoint number.  Record the
          /* rresponse contains PMON's breakpoint number.  Record the
             information for this breakpoint so we can clear it later.  */
             information for this breakpoint so we can clear it later.  */
          lsi_breakpoints[rresponse].type = type;
          lsi_breakpoints[rresponse].type = type;
          lsi_breakpoints[rresponse].addr = addr;
          lsi_breakpoints[rresponse].addr = addr;
          lsi_breakpoints[rresponse].len = len;
          lsi_breakpoints[rresponse].len = len;
 
 
          return 0;
          return 0;
        }
        }
    }
    }
  else
  else
    {
    {
      /* On non-LSI targets, the breakpoint command has this form:
      /* On non-LSI targets, the breakpoint command has this form:
         0x0 <CMD> <ADDR> <MASK> <FLAGS>
         0x0 <CMD> <ADDR> <MASK> <FLAGS>
         <MASK> is a don't care mask for addresses.
         <MASK> is a don't care mask for addresses.
         <FLAGS> is any combination of `r', `w', or `f' for read/write/fetch.
         <FLAGS> is any combination of `r', `w', or `f' for read/write/fetch.
       */
       */
      unsigned long mask;
      unsigned long mask;
 
 
      mask = calculate_mask (addr, len);
      mask = calculate_mask (addr, len);
      addr &= ~mask;
      addr &= ~mask;
 
 
      if (set)                  /* set a breakpoint */
      if (set)                  /* set a breakpoint */
        {
        {
          char *flags;
          char *flags;
          switch (type)
          switch (type)
            {
            {
            case BREAK_WRITE:   /* write */
            case BREAK_WRITE:   /* write */
              flags = "w";
              flags = "w";
              break;
              break;
            case BREAK_READ:    /* read */
            case BREAK_READ:    /* read */
              flags = "r";
              flags = "r";
              break;
              break;
            case BREAK_ACCESS:  /* read/write */
            case BREAK_ACCESS:  /* read/write */
              flags = "rw";
              flags = "rw";
              break;
              break;
            case BREAK_FETCH:   /* fetch */
            case BREAK_FETCH:   /* fetch */
              flags = "f";
              flags = "f";
              break;
              break;
            default:
            default:
              internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
              internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
            }
            }
 
 
          cmd = 'B';
          cmd = 'B';
          sprintf (buf, "0x0 B 0x%s 0x%s %s", paddr_nz (addr),
          sprintf (buf, "0x0 B 0x%s 0x%s %s", paddr_nz (addr),
                   paddr_nz (mask), flags);
                   paddr_nz (mask), flags);
        }
        }
      else
      else
        {
        {
          cmd = 'b';
          cmd = 'b';
          sprintf (buf, "0x0 b 0x%s", paddr_nz (addr));
          sprintf (buf, "0x0 b 0x%s", paddr_nz (addr));
        }
        }
 
 
      mips_send_packet (buf, 1);
      mips_send_packet (buf, 1);
 
 
      rlen = mips_receive_packet (buf, 1, mips_receive_wait);
      rlen = mips_receive_packet (buf, 1, mips_receive_wait);
      buf[rlen] = '\0';
      buf[rlen] = '\0';
 
 
      nfields = sscanf (buf, "0x%x %c 0x%x 0x%x",
      nfields = sscanf (buf, "0x%x %c 0x%x 0x%x",
                        &rpid, &rcmd, &rerrflg, &rresponse);
                        &rpid, &rcmd, &rerrflg, &rresponse);
 
 
      if (nfields != 4 || rcmd != cmd)
      if (nfields != 4 || rcmd != cmd)
        mips_error ("\
        mips_error ("\
mips_common_breakpoint: Bad response from remote board: %s",
mips_common_breakpoint: Bad response from remote board: %s",
                    buf);
                    buf);
 
 
      if (rerrflg != 0)
      if (rerrflg != 0)
        {
        {
          /* Ddb returns "0x0 b 0x16 0x0\000", whereas
          /* Ddb returns "0x0 b 0x16 0x0\000", whereas
             Cogent returns "0x0 b 0xffffffff 0x16\000": */
             Cogent returns "0x0 b 0xffffffff 0x16\000": */
          if (mips_monitor == MON_DDB)
          if (mips_monitor == MON_DDB)
            rresponse = rerrflg;
            rresponse = rerrflg;
          if (rresponse != 22)  /* invalid argument */
          if (rresponse != 22)  /* invalid argument */
            fprintf_unfiltered (gdb_stderr, "\
            fprintf_unfiltered (gdb_stderr, "\
mips_common_breakpoint (0x%s):  Got error: 0x%x\n",
mips_common_breakpoint (0x%s):  Got error: 0x%x\n",
                                paddr_nz (addr), rresponse);
                                paddr_nz (addr), rresponse);
          return 1;
          return 1;
        }
        }
    }
    }
  return 0;
  return 0;
}
}


static void
static void
send_srec (char *srec, int len, CORE_ADDR addr)
send_srec (char *srec, int len, CORE_ADDR addr)
{
{
  while (1)
  while (1)
    {
    {
      int ch;
      int ch;
 
 
      serial_write (mips_desc, srec, len);
      serial_write (mips_desc, srec, len);
 
 
      ch = mips_readchar (remote_timeout);
      ch = mips_readchar (remote_timeout);
 
 
      switch (ch)
      switch (ch)
        {
        {
        case SERIAL_TIMEOUT:
        case SERIAL_TIMEOUT:
          error ("Timeout during download.");
          error ("Timeout during download.");
          break;
          break;
        case 0x6:               /* ACK */
        case 0x6:               /* ACK */
          return;
          return;
        case 0x15:              /* NACK */
        case 0x15:              /* NACK */
          fprintf_unfiltered (gdb_stderr, "Download got a NACK at byte %s!  Retrying.\n", paddr_u (addr));
          fprintf_unfiltered (gdb_stderr, "Download got a NACK at byte %s!  Retrying.\n", paddr_u (addr));
          continue;
          continue;
        default:
        default:
          error ("Download got unexpected ack char: 0x%x, retrying.\n", ch);
          error ("Download got unexpected ack char: 0x%x, retrying.\n", ch);
        }
        }
    }
    }
}
}
 
 
/*  Download a binary file by converting it to S records. */
/*  Download a binary file by converting it to S records. */
 
 
static void
static void
mips_load_srec (char *args)
mips_load_srec (char *args)
{
{
  bfd *abfd;
  bfd *abfd;
  asection *s;
  asection *s;
  char *buffer, srec[1024];
  char *buffer, srec[1024];
  unsigned int i;
  unsigned int i;
  unsigned int srec_frame = 200;
  unsigned int srec_frame = 200;
  int reclen;
  int reclen;
  static int hashmark = 1;
  static int hashmark = 1;
 
 
  buffer = alloca (srec_frame * 2 + 256);
  buffer = alloca (srec_frame * 2 + 256);
 
 
  abfd = bfd_openr (args, 0);
  abfd = bfd_openr (args, 0);
  if (!abfd)
  if (!abfd)
    {
    {
      printf_filtered ("Unable to open file %s\n", args);
      printf_filtered ("Unable to open file %s\n", args);
      return;
      return;
    }
    }
 
 
  if (bfd_check_format (abfd, bfd_object) == 0)
  if (bfd_check_format (abfd, bfd_object) == 0)
    {
    {
      printf_filtered ("File is not an object file\n");
      printf_filtered ("File is not an object file\n");
      return;
      return;
    }
    }
 
 
/* This actually causes a download in the IDT binary format: */
/* This actually causes a download in the IDT binary format: */
  mips_send_command (LOAD_CMD, 0);
  mips_send_command (LOAD_CMD, 0);
 
 
  for (s = abfd->sections; s; s = s->next)
  for (s = abfd->sections; s; s = s->next)
    {
    {
      if (s->flags & SEC_LOAD)
      if (s->flags & SEC_LOAD)
        {
        {
          unsigned int numbytes;
          unsigned int numbytes;
 
 
          /* FIXME!  vma too small????? */
          /* FIXME!  vma too small????? */
          printf_filtered ("%s\t: 0x%4lx .. 0x%4lx  ", s->name,
          printf_filtered ("%s\t: 0x%4lx .. 0x%4lx  ", s->name,
                           (long) s->vma,
                           (long) s->vma,
                           (long) (s->vma + bfd_get_section_size (s)));
                           (long) (s->vma + bfd_get_section_size (s)));
          gdb_flush (gdb_stdout);
          gdb_flush (gdb_stdout);
 
 
          for (i = 0; i < bfd_get_section_size (s); i += numbytes)
          for (i = 0; i < bfd_get_section_size (s); i += numbytes)
            {
            {
              numbytes = min (srec_frame, bfd_get_section_size (s) - i);
              numbytes = min (srec_frame, bfd_get_section_size (s) - i);
 
 
              bfd_get_section_contents (abfd, s, buffer, i, numbytes);
              bfd_get_section_contents (abfd, s, buffer, i, numbytes);
 
 
              reclen = mips_make_srec (srec, '3', s->vma + i,
              reclen = mips_make_srec (srec, '3', s->vma + i,
                                       buffer, numbytes);
                                       buffer, numbytes);
              send_srec (srec, reclen, s->vma + i);
              send_srec (srec, reclen, s->vma + i);
 
 
              if (deprecated_ui_load_progress_hook)
              if (deprecated_ui_load_progress_hook)
                deprecated_ui_load_progress_hook (s->name, i);
                deprecated_ui_load_progress_hook (s->name, i);
 
 
              if (hashmark)
              if (hashmark)
                {
                {
                  putchar_unfiltered ('#');
                  putchar_unfiltered ('#');
                  gdb_flush (gdb_stdout);
                  gdb_flush (gdb_stdout);
                }
                }
 
 
            }                   /* Per-packet (or S-record) loop */
            }                   /* Per-packet (or S-record) loop */
 
 
          putchar_unfiltered ('\n');
          putchar_unfiltered ('\n');
        }                       /* Loadable sections */
        }                       /* Loadable sections */
    }
    }
  if (hashmark)
  if (hashmark)
    putchar_unfiltered ('\n');
    putchar_unfiltered ('\n');
 
 
  /* Write a type 7 terminator record. no data for a type 7, and there
  /* Write a type 7 terminator record. no data for a type 7, and there
     is no data, so len is 0.  */
     is no data, so len is 0.  */
 
 
  reclen = mips_make_srec (srec, '7', abfd->start_address, NULL, 0);
  reclen = mips_make_srec (srec, '7', abfd->start_address, NULL, 0);
 
 
  send_srec (srec, reclen, abfd->start_address);
  send_srec (srec, reclen, abfd->start_address);
 
 
  serial_flush_input (mips_desc);
  serial_flush_input (mips_desc);
}
}
 
 
/*
/*
 * mips_make_srec -- make an srecord. This writes each line, one at a
 * mips_make_srec -- make an srecord. This writes each line, one at a
 *      time, each with it's own header and trailer line.
 *      time, each with it's own header and trailer line.
 *      An srecord looks like this:
 *      An srecord looks like this:
 *
 *
 * byte count-+     address
 * byte count-+     address
 * start ---+ |        |       data        +- checksum
 * start ---+ |        |       data        +- checksum
 *          | |        |                   |
 *          | |        |                   |
 *        S01000006F6B692D746573742E73726563E4
 *        S01000006F6B692D746573742E73726563E4
 *        S315000448600000000000000000FC00005900000000E9
 *        S315000448600000000000000000FC00005900000000E9
 *        S31A0004000023C1400037DE00F023604000377B009020825000348D
 *        S31A0004000023C1400037DE00F023604000377B009020825000348D
 *        S30B0004485A0000000000004E
 *        S30B0004485A0000000000004E
 *        S70500040000F6
 *        S70500040000F6
 *
 *
 *      S<type><length><address><data><checksum>
 *      S<type><length><address><data><checksum>
 *
 *
 *      Where
 *      Where
 *      - length
 *      - length
 *        is the number of bytes following upto the checksum. Note that
 *        is the number of bytes following upto the checksum. Note that
 *        this is not the number of chars following, since it takes two
 *        this is not the number of chars following, since it takes two
 *        chars to represent a byte.
 *        chars to represent a byte.
 *      - type
 *      - type
 *        is one of:
 *        is one of:
 *        0) header record
 *        0) header record
 *        1) two byte address data record
 *        1) two byte address data record
 *        2) three byte address data record
 *        2) three byte address data record
 *        3) four byte address data record
 *        3) four byte address data record
 *        7) four byte address termination record
 *        7) four byte address termination record
 *        8) three byte address termination record
 *        8) three byte address termination record
 *        9) two byte address termination record
 *        9) two byte address termination record
 *
 *
 *      - address
 *      - address
 *        is the start address of the data following, or in the case of
 *        is the start address of the data following, or in the case of
 *        a termination record, the start address of the image
 *        a termination record, the start address of the image
 *      - data
 *      - data
 *        is the data.
 *        is the data.
 *      - checksum
 *      - checksum
 *        is the sum of all the raw byte data in the record, from the length
 *        is the sum of all the raw byte data in the record, from the length
 *        upwards, modulo 256 and subtracted from 255.
 *        upwards, modulo 256 and subtracted from 255.
 *
 *
 * This routine returns the length of the S-record.
 * This routine returns the length of the S-record.
 *
 *
 */
 */
 
 
static int
static int
mips_make_srec (char *buf, int type, CORE_ADDR memaddr, unsigned char *myaddr,
mips_make_srec (char *buf, int type, CORE_ADDR memaddr, unsigned char *myaddr,
                int len)
                int len)
{
{
  unsigned char checksum;
  unsigned char checksum;
  int i;
  int i;
 
 
  /* Create the header for the srec. addr_size is the number of bytes in the address,
  /* Create the header for the srec. addr_size is the number of bytes in the address,
     and 1 is the number of bytes in the count.  */
     and 1 is the number of bytes in the count.  */
 
 
  /* FIXME!! bigger buf required for 64-bit! */
  /* FIXME!! bigger buf required for 64-bit! */
  buf[0] = 'S';
  buf[0] = 'S';
  buf[1] = type;
  buf[1] = type;
  buf[2] = len + 4 + 1;         /* len + 4 byte address + 1 byte checksum */
  buf[2] = len + 4 + 1;         /* len + 4 byte address + 1 byte checksum */
  /* This assumes S3 style downloads (4byte addresses). There should
  /* This assumes S3 style downloads (4byte addresses). There should
     probably be a check, or the code changed to make it more
     probably be a check, or the code changed to make it more
     explicit. */
     explicit. */
  buf[3] = memaddr >> 24;
  buf[3] = memaddr >> 24;
  buf[4] = memaddr >> 16;
  buf[4] = memaddr >> 16;
  buf[5] = memaddr >> 8;
  buf[5] = memaddr >> 8;
  buf[6] = memaddr;
  buf[6] = memaddr;
  memcpy (&buf[7], myaddr, len);
  memcpy (&buf[7], myaddr, len);
 
 
  /* Note that the checksum is calculated on the raw data, not the
  /* Note that the checksum is calculated on the raw data, not the
     hexified data.  It includes the length, address and the data
     hexified data.  It includes the length, address and the data
     portions of the packet.  */
     portions of the packet.  */
  checksum = 0;
  checksum = 0;
  buf += 2;                     /* Point at length byte */
  buf += 2;                     /* Point at length byte */
  for (i = 0; i < len + 4 + 1; i++)
  for (i = 0; i < len + 4 + 1; i++)
    checksum += *buf++;
    checksum += *buf++;
 
 
  *buf = ~checksum;
  *buf = ~checksum;
 
 
  return len + 8;
  return len + 8;
}
}
 
 
/* The following manifest controls whether we enable the simple flow
/* The following manifest controls whether we enable the simple flow
   control support provided by the monitor. If enabled the code will
   control support provided by the monitor. If enabled the code will
   wait for an affirmative ACK between transmitting packets. */
   wait for an affirmative ACK between transmitting packets. */
#define DOETXACK (1)
#define DOETXACK (1)
 
 
/* The PMON fast-download uses an encoded packet format constructed of
/* The PMON fast-download uses an encoded packet format constructed of
   3byte data packets (encoded as 4 printable ASCII characters), and
   3byte data packets (encoded as 4 printable ASCII characters), and
   escape sequences (preceded by a '/'):
   escape sequences (preceded by a '/'):
 
 
   'K'     clear checksum
   'K'     clear checksum
   'C'     compare checksum (12bit value, not included in checksum calculation)
   'C'     compare checksum (12bit value, not included in checksum calculation)
   'S'     define symbol name (for addr) terminated with "," and padded to 4char boundary
   'S'     define symbol name (for addr) terminated with "," and padded to 4char boundary
   'Z'     zero fill multiple of 3bytes
   'Z'     zero fill multiple of 3bytes
   'B'     byte (12bit encoded value, of 8bit data)
   'B'     byte (12bit encoded value, of 8bit data)
   'A'     address (36bit encoded value)
   'A'     address (36bit encoded value)
   'E'     define entry as original address, and exit load
   'E'     define entry as original address, and exit load
 
 
   The packets are processed in 4 character chunks, so the escape
   The packets are processed in 4 character chunks, so the escape
   sequences that do not have any data (or variable length data)
   sequences that do not have any data (or variable length data)
   should be padded to a 4 character boundary.  The decoder will give
   should be padded to a 4 character boundary.  The decoder will give
   an error if the complete message block size is not a multiple of
   an error if the complete message block size is not a multiple of
   4bytes (size of record).
   4bytes (size of record).
 
 
   The encoding of numbers is done in 6bit fields.  The 6bit value is
   The encoding of numbers is done in 6bit fields.  The 6bit value is
   used to index into this string to get the specific character
   used to index into this string to get the specific character
   encoding for the value: */
   encoding for the value: */
static char encoding[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789,.";
static char encoding[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789,.";
 
 
/* Convert the number of bits required into an encoded number, 6bits
/* Convert the number of bits required into an encoded number, 6bits
   at a time (range 0..63).  Keep a checksum if required (passed
   at a time (range 0..63).  Keep a checksum if required (passed
   pointer non-NULL). The function returns the number of encoded
   pointer non-NULL). The function returns the number of encoded
   characters written into the buffer. */
   characters written into the buffer. */
static int
static int
pmon_makeb64 (unsigned long v, char *p, int n, int *chksum)
pmon_makeb64 (unsigned long v, char *p, int n, int *chksum)
{
{
  int count = (n / 6);
  int count = (n / 6);
 
 
  if ((n % 12) != 0)
  if ((n % 12) != 0)
    {
    {
      fprintf_unfiltered (gdb_stderr,
      fprintf_unfiltered (gdb_stderr,
                          "Fast encoding bitcount must be a multiple of 12bits: %dbit%s\n", n, (n == 1) ? "" : "s");
                          "Fast encoding bitcount must be a multiple of 12bits: %dbit%s\n", n, (n == 1) ? "" : "s");
      return (0);
      return (0);
    }
    }
  if (n > 36)
  if (n > 36)
    {
    {
      fprintf_unfiltered (gdb_stderr,
      fprintf_unfiltered (gdb_stderr,
                          "Fast encoding cannot process more than 36bits at the moment: %dbits\n", n);
                          "Fast encoding cannot process more than 36bits at the moment: %dbits\n", n);
      return (0);
      return (0);
    }
    }
 
 
  /* Deal with the checksum: */
  /* Deal with the checksum: */
  if (chksum != NULL)
  if (chksum != NULL)
    {
    {
      switch (n)
      switch (n)
        {
        {
        case 36:
        case 36:
          *chksum += ((v >> 24) & 0xFFF);
          *chksum += ((v >> 24) & 0xFFF);
        case 24:
        case 24:
          *chksum += ((v >> 12) & 0xFFF);
          *chksum += ((v >> 12) & 0xFFF);
        case 12:
        case 12:
          *chksum += ((v >> 0) & 0xFFF);
          *chksum += ((v >> 0) & 0xFFF);
        }
        }
    }
    }
 
 
  do
  do
    {
    {
      n -= 6;
      n -= 6;
      *p++ = encoding[(v >> n) & 0x3F];
      *p++ = encoding[(v >> n) & 0x3F];
    }
    }
  while (n > 0);
  while (n > 0);
 
 
  return (count);
  return (count);
}
}
 
 
/* Shorthand function (that could be in-lined) to output the zero-fill
/* Shorthand function (that could be in-lined) to output the zero-fill
   escape sequence into the data stream. */
   escape sequence into the data stream. */
static int
static int
pmon_zeroset (int recsize, char **buff, int *amount, unsigned int *chksum)
pmon_zeroset (int recsize, char **buff, int *amount, unsigned int *chksum)
{
{
  int count;
  int count;
 
 
  sprintf (*buff, "/Z");
  sprintf (*buff, "/Z");
  count = pmon_makeb64 (*amount, (*buff + 2), 12, chksum);
  count = pmon_makeb64 (*amount, (*buff + 2), 12, chksum);
  *buff += (count + 2);
  *buff += (count + 2);
  *amount = 0;
  *amount = 0;
  return (recsize + count + 2);
  return (recsize + count + 2);
}
}
 
 
static int
static int
pmon_checkset (int recsize, char **buff, int *value)
pmon_checkset (int recsize, char **buff, int *value)
{
{
  int count;
  int count;
 
 
  /* Add the checksum (without updating the value): */
  /* Add the checksum (without updating the value): */
  sprintf (*buff, "/C");
  sprintf (*buff, "/C");
  count = pmon_makeb64 (*value, (*buff + 2), 12, NULL);
  count = pmon_makeb64 (*value, (*buff + 2), 12, NULL);
  *buff += (count + 2);
  *buff += (count + 2);
  sprintf (*buff, "\n");
  sprintf (*buff, "\n");
  *buff += 2;                   /* include zero terminator */
  *buff += 2;                   /* include zero terminator */
  /* Forcing a checksum validation clears the sum: */
  /* Forcing a checksum validation clears the sum: */
  *value = 0;
  *value = 0;
  return (recsize + count + 3);
  return (recsize + count + 3);
}
}
 
 
/* Amount of padding we leave after at the end of the output buffer,
/* Amount of padding we leave after at the end of the output buffer,
   for the checksum and line termination characters: */
   for the checksum and line termination characters: */
#define CHECKSIZE (4 + 4 + 4 + 2)
#define CHECKSIZE (4 + 4 + 4 + 2)
/* zero-fill, checksum, transfer end and line termination space. */
/* zero-fill, checksum, transfer end and line termination space. */
 
 
/* The amount of binary data loaded from the object file in a single
/* The amount of binary data loaded from the object file in a single
   operation: */
   operation: */
#define BINCHUNK (1024)
#define BINCHUNK (1024)
 
 
/* Maximum line of data accepted by the monitor: */
/* Maximum line of data accepted by the monitor: */
#define MAXRECSIZE (550)
#define MAXRECSIZE (550)
/* NOTE: This constant depends on the monitor being used. This value
/* NOTE: This constant depends on the monitor being used. This value
   is for PMON 5.x on the Cogent Vr4300 board. */
   is for PMON 5.x on the Cogent Vr4300 board. */
 
 
static void
static void
pmon_make_fastrec (char **outbuf, unsigned char *inbuf, int *inptr,
pmon_make_fastrec (char **outbuf, unsigned char *inbuf, int *inptr,
                   int inamount, int *recsize, unsigned int *csum,
                   int inamount, int *recsize, unsigned int *csum,
                   unsigned int *zerofill)
                   unsigned int *zerofill)
{
{
  int count = 0;
  int count = 0;
  char *p = *outbuf;
  char *p = *outbuf;
 
 
  /* This is a simple check to ensure that our data will fit within
  /* This is a simple check to ensure that our data will fit within
     the maximum allowable record size. Each record output is 4bytes
     the maximum allowable record size. Each record output is 4bytes
     in length. We must allow space for a pending zero fill command,
     in length. We must allow space for a pending zero fill command,
     the record, and a checksum record. */
     the record, and a checksum record. */
  while ((*recsize < (MAXRECSIZE - CHECKSIZE)) && ((inamount - *inptr) > 0))
  while ((*recsize < (MAXRECSIZE - CHECKSIZE)) && ((inamount - *inptr) > 0))
    {
    {
      /* Process the binary data: */
      /* Process the binary data: */
      if ((inamount - *inptr) < 3)
      if ((inamount - *inptr) < 3)
        {
        {
          if (*zerofill != 0)
          if (*zerofill != 0)
            *recsize = pmon_zeroset (*recsize, &p, zerofill, csum);
            *recsize = pmon_zeroset (*recsize, &p, zerofill, csum);
          sprintf (p, "/B");
          sprintf (p, "/B");
          count = pmon_makeb64 (inbuf[*inptr], &p[2], 12, csum);
          count = pmon_makeb64 (inbuf[*inptr], &p[2], 12, csum);
          p += (2 + count);
          p += (2 + count);
          *recsize += (2 + count);
          *recsize += (2 + count);
          (*inptr)++;
          (*inptr)++;
        }
        }
      else
      else
        {
        {
          unsigned int value = ((inbuf[*inptr + 0] << 16) | (inbuf[*inptr + 1] << 8) | inbuf[*inptr + 2]);
          unsigned int value = ((inbuf[*inptr + 0] << 16) | (inbuf[*inptr + 1] << 8) | inbuf[*inptr + 2]);
          /* Simple check for zero data. TODO: A better check would be
          /* Simple check for zero data. TODO: A better check would be
             to check the last, and then the middle byte for being zero
             to check the last, and then the middle byte for being zero
             (if the first byte is not). We could then check for
             (if the first byte is not). We could then check for
             following runs of zeros, and if above a certain size it is
             following runs of zeros, and if above a certain size it is
             worth the 4 or 8 character hit of the byte insertions used
             worth the 4 or 8 character hit of the byte insertions used
             to pad to the start of the zeroes. NOTE: This also depends
             to pad to the start of the zeroes. NOTE: This also depends
             on the alignment at the end of the zero run. */
             on the alignment at the end of the zero run. */
          if (value == 0x00000000)
          if (value == 0x00000000)
            {
            {
              (*zerofill)++;
              (*zerofill)++;
              if (*zerofill == 0xFFF)   /* 12bit counter */
              if (*zerofill == 0xFFF)   /* 12bit counter */
                *recsize = pmon_zeroset (*recsize, &p, zerofill, csum);
                *recsize = pmon_zeroset (*recsize, &p, zerofill, csum);
            }
            }
          else
          else
            {
            {
              if (*zerofill != 0)
              if (*zerofill != 0)
                *recsize = pmon_zeroset (*recsize, &p, zerofill, csum);
                *recsize = pmon_zeroset (*recsize, &p, zerofill, csum);
              count = pmon_makeb64 (value, p, 24, csum);
              count = pmon_makeb64 (value, p, 24, csum);
              p += count;
              p += count;
              *recsize += count;
              *recsize += count;
            }
            }
          *inptr += 3;
          *inptr += 3;
        }
        }
    }
    }
 
 
  *outbuf = p;
  *outbuf = p;
  return;
  return;
}
}
 
 
static int
static int
pmon_check_ack (char *mesg)
pmon_check_ack (char *mesg)
{
{
#if defined(DOETXACK)
#if defined(DOETXACK)
  int c;
  int c;
 
 
  if (!tftp_in_use)
  if (!tftp_in_use)
    {
    {
      c = serial_readchar (udp_in_use ? udp_desc : mips_desc,
      c = serial_readchar (udp_in_use ? udp_desc : mips_desc,
                           remote_timeout);
                           remote_timeout);
      if ((c == SERIAL_TIMEOUT) || (c != 0x06))
      if ((c == SERIAL_TIMEOUT) || (c != 0x06))
        {
        {
          fprintf_unfiltered (gdb_stderr,
          fprintf_unfiltered (gdb_stderr,
                              "Failed to receive valid ACK for %s\n", mesg);
                              "Failed to receive valid ACK for %s\n", mesg);
          return (-1);          /* terminate the download */
          return (-1);          /* terminate the download */
        }
        }
    }
    }
#endif /* DOETXACK */
#endif /* DOETXACK */
  return (0);
  return (0);
}
}
 
 
/* pmon_download - Send a sequence of characters to the PMON download port,
/* pmon_download - Send a sequence of characters to the PMON download port,
   which is either a serial port or a UDP socket.  */
   which is either a serial port or a UDP socket.  */
 
 
static void
static void
pmon_start_download (void)
pmon_start_download (void)
{
{
  if (tftp_in_use)
  if (tftp_in_use)
    {
    {
      /* Create the temporary download file.  */
      /* Create the temporary download file.  */
      if ((tftp_file = fopen (tftp_localname, "w")) == NULL)
      if ((tftp_file = fopen (tftp_localname, "w")) == NULL)
        perror_with_name (tftp_localname);
        perror_with_name (tftp_localname);
    }
    }
  else
  else
    {
    {
      mips_send_command (udp_in_use ? LOAD_CMD_UDP : LOAD_CMD, 0);
      mips_send_command (udp_in_use ? LOAD_CMD_UDP : LOAD_CMD, 0);
      mips_expect ("Downloading from ");
      mips_expect ("Downloading from ");
      mips_expect (udp_in_use ? "udp" : "tty0");
      mips_expect (udp_in_use ? "udp" : "tty0");
      mips_expect (", ^C to abort\r\n");
      mips_expect (", ^C to abort\r\n");
    }
    }
}
}
 
 
static int
static int
mips_expect_download (char *string)
mips_expect_download (char *string)
{
{
  if (!mips_expect (string))
  if (!mips_expect (string))
    {
    {
      fprintf_unfiltered (gdb_stderr, "Load did not complete successfully.\n");
      fprintf_unfiltered (gdb_stderr, "Load did not complete successfully.\n");
      if (tftp_in_use)
      if (tftp_in_use)
        remove (tftp_localname);        /* Remove temporary file */
        remove (tftp_localname);        /* Remove temporary file */
      return 0;
      return 0;
    }
    }
  else
  else
    return 1;
    return 1;
}
}
 
 
static void
static void
pmon_check_entry_address (char *entry_address, int final)
pmon_check_entry_address (char *entry_address, int final)
{
{
  char hexnumber[9];            /* includes '\0' space */
  char hexnumber[9];            /* includes '\0' space */
  mips_expect_timeout (entry_address, tftp_in_use ? 15 : remote_timeout);
  mips_expect_timeout (entry_address, tftp_in_use ? 15 : remote_timeout);
  sprintf (hexnumber, "%x", final);
  sprintf (hexnumber, "%x", final);
  mips_expect (hexnumber);
  mips_expect (hexnumber);
  mips_expect ("\r\n");
  mips_expect ("\r\n");
}
}
 
 
static int
static int
pmon_check_total (int bintotal)
pmon_check_total (int bintotal)
{
{
  char hexnumber[9];            /* includes '\0' space */
  char hexnumber[9];            /* includes '\0' space */
  mips_expect ("\r\ntotal = 0x");
  mips_expect ("\r\ntotal = 0x");
  sprintf (hexnumber, "%x", bintotal);
  sprintf (hexnumber, "%x", bintotal);
  mips_expect (hexnumber);
  mips_expect (hexnumber);
  return mips_expect_download (" bytes\r\n");
  return mips_expect_download (" bytes\r\n");
}
}
 
 
static void
static void
pmon_end_download (int final, int bintotal)
pmon_end_download (int final, int bintotal)
{
{
  char hexnumber[9];            /* includes '\0' space */
  char hexnumber[9];            /* includes '\0' space */
 
 
  if (tftp_in_use)
  if (tftp_in_use)
    {
    {
      static char *load_cmd_prefix = "load -b -s ";
      static char *load_cmd_prefix = "load -b -s ";
      char *cmd;
      char *cmd;
      struct stat stbuf;
      struct stat stbuf;
 
 
      /* Close off the temporary file containing the load data.  */
      /* Close off the temporary file containing the load data.  */
      fclose (tftp_file);
      fclose (tftp_file);
      tftp_file = NULL;
      tftp_file = NULL;
 
 
      /* Make the temporary file readable by the world.  */
      /* Make the temporary file readable by the world.  */
      if (stat (tftp_localname, &stbuf) == 0)
      if (stat (tftp_localname, &stbuf) == 0)
        chmod (tftp_localname, stbuf.st_mode | S_IROTH);
        chmod (tftp_localname, stbuf.st_mode | S_IROTH);
 
 
      /* Must reinitialize the board to prevent PMON from crashing.  */
      /* Must reinitialize the board to prevent PMON from crashing.  */
      mips_send_command ("initEther\r", -1);
      mips_send_command ("initEther\r", -1);
 
 
      /* Send the load command.  */
      /* Send the load command.  */
      cmd = xmalloc (strlen (load_cmd_prefix) + strlen (tftp_name) + 2);
      cmd = xmalloc (strlen (load_cmd_prefix) + strlen (tftp_name) + 2);
      strcpy (cmd, load_cmd_prefix);
      strcpy (cmd, load_cmd_prefix);
      strcat (cmd, tftp_name);
      strcat (cmd, tftp_name);
      strcat (cmd, "\r");
      strcat (cmd, "\r");
      mips_send_command (cmd, 0);
      mips_send_command (cmd, 0);
      xfree (cmd);
      xfree (cmd);
      if (!mips_expect_download ("Downloading from "))
      if (!mips_expect_download ("Downloading from "))
        return;
        return;
      if (!mips_expect_download (tftp_name))
      if (!mips_expect_download (tftp_name))
        return;
        return;
      if (!mips_expect_download (", ^C to abort\r\n"))
      if (!mips_expect_download (", ^C to abort\r\n"))
        return;
        return;
    }
    }
 
 
  /* Wait for the stuff that PMON prints after the load has completed.
  /* Wait for the stuff that PMON prints after the load has completed.
     The timeout value for use in the tftp case (15 seconds) was picked
     The timeout value for use in the tftp case (15 seconds) was picked
     arbitrarily but might be too small for really large downloads. FIXME. */
     arbitrarily but might be too small for really large downloads. FIXME. */
  switch (mips_monitor)
  switch (mips_monitor)
    {
    {
    case MON_LSI:
    case MON_LSI:
      pmon_check_ack ("termination");
      pmon_check_ack ("termination");
      pmon_check_entry_address ("Entry address is ", final);
      pmon_check_entry_address ("Entry address is ", final);
      if (!pmon_check_total (bintotal))
      if (!pmon_check_total (bintotal))
        return;
        return;
      break;
      break;
    default:
    default:
      pmon_check_entry_address ("Entry Address  = ", final);
      pmon_check_entry_address ("Entry Address  = ", final);
      pmon_check_ack ("termination");
      pmon_check_ack ("termination");
      if (!pmon_check_total (bintotal))
      if (!pmon_check_total (bintotal))
        return;
        return;
      break;
      break;
    }
    }
 
 
  if (tftp_in_use)
  if (tftp_in_use)
    remove (tftp_localname);    /* Remove temporary file */
    remove (tftp_localname);    /* Remove temporary file */
}
}
 
 
static void
static void
pmon_download (char *buffer, int length)
pmon_download (char *buffer, int length)
{
{
  if (tftp_in_use)
  if (tftp_in_use)
    fwrite (buffer, 1, length, tftp_file);
    fwrite (buffer, 1, length, tftp_file);
  else
  else
    serial_write (udp_in_use ? udp_desc : mips_desc, buffer, length);
    serial_write (udp_in_use ? udp_desc : mips_desc, buffer, length);
}
}
 
 
static void
static void
pmon_load_fast (char *file)
pmon_load_fast (char *file)
{
{
  bfd *abfd;
  bfd *abfd;
  asection *s;
  asection *s;
  unsigned char *binbuf;
  unsigned char *binbuf;
  char *buffer;
  char *buffer;
  int reclen;
  int reclen;
  unsigned int csum = 0;
  unsigned int csum = 0;
  int hashmark = !tftp_in_use;
  int hashmark = !tftp_in_use;
  int bintotal = 0;
  int bintotal = 0;
  int final = 0;
  int final = 0;
  int finished = 0;
  int finished = 0;
 
 
  buffer = (char *) xmalloc (MAXRECSIZE + 1);
  buffer = (char *) xmalloc (MAXRECSIZE + 1);
  binbuf = (unsigned char *) xmalloc (BINCHUNK);
  binbuf = (unsigned char *) xmalloc (BINCHUNK);
 
 
  abfd = bfd_openr (file, 0);
  abfd = bfd_openr (file, 0);
  if (!abfd)
  if (!abfd)
    {
    {
      printf_filtered ("Unable to open file %s\n", file);
      printf_filtered ("Unable to open file %s\n", file);
      return;
      return;
    }
    }
 
 
  if (bfd_check_format (abfd, bfd_object) == 0)
  if (bfd_check_format (abfd, bfd_object) == 0)
    {
    {
      printf_filtered ("File is not an object file\n");
      printf_filtered ("File is not an object file\n");
      return;
      return;
    }
    }
 
 
  /* Setup the required download state: */
  /* Setup the required download state: */
  mips_send_command ("set dlproto etxack\r", -1);
  mips_send_command ("set dlproto etxack\r", -1);
  mips_send_command ("set dlecho off\r", -1);
  mips_send_command ("set dlecho off\r", -1);
  /* NOTE: We get a "cannot set variable" message if the variable is
  /* NOTE: We get a "cannot set variable" message if the variable is
     already defined to have the argument we give. The code doesn't
     already defined to have the argument we give. The code doesn't
     care, since it just scans to the next prompt anyway. */
     care, since it just scans to the next prompt anyway. */
  /* Start the download: */
  /* Start the download: */
  pmon_start_download ();
  pmon_start_download ();
 
 
  /* Zero the checksum */
  /* Zero the checksum */
  sprintf (buffer, "/Kxx\n");
  sprintf (buffer, "/Kxx\n");
  reclen = strlen (buffer);
  reclen = strlen (buffer);
  pmon_download (buffer, reclen);
  pmon_download (buffer, reclen);
  finished = pmon_check_ack ("/Kxx");
  finished = pmon_check_ack ("/Kxx");
 
 
  for (s = abfd->sections; s && !finished; s = s->next)
  for (s = abfd->sections; s && !finished; s = s->next)
    if (s->flags & SEC_LOAD)    /* only deal with loadable sections */
    if (s->flags & SEC_LOAD)    /* only deal with loadable sections */
      {
      {
        bintotal += bfd_get_section_size (s);
        bintotal += bfd_get_section_size (s);
        final = (s->vma + bfd_get_section_size (s));
        final = (s->vma + bfd_get_section_size (s));
 
 
        printf_filtered ("%s\t: 0x%4x .. 0x%4x  ", s->name, (unsigned int) s->vma,
        printf_filtered ("%s\t: 0x%4x .. 0x%4x  ", s->name, (unsigned int) s->vma,
                         (unsigned int) (s->vma + bfd_get_section_size (s)));
                         (unsigned int) (s->vma + bfd_get_section_size (s)));
        gdb_flush (gdb_stdout);
        gdb_flush (gdb_stdout);
 
 
        /* Output the starting address */
        /* Output the starting address */
        sprintf (buffer, "/A");
        sprintf (buffer, "/A");
        reclen = pmon_makeb64 (s->vma, &buffer[2], 36, &csum);
        reclen = pmon_makeb64 (s->vma, &buffer[2], 36, &csum);
        buffer[2 + reclen] = '\n';
        buffer[2 + reclen] = '\n';
        buffer[3 + reclen] = '\0';
        buffer[3 + reclen] = '\0';
        reclen += 3;            /* for the initial escape code and carriage return */
        reclen += 3;            /* for the initial escape code and carriage return */
        pmon_download (buffer, reclen);
        pmon_download (buffer, reclen);
        finished = pmon_check_ack ("/A");
        finished = pmon_check_ack ("/A");
 
 
        if (!finished)
        if (!finished)
          {
          {
            unsigned int binamount;
            unsigned int binamount;
            unsigned int zerofill = 0;
            unsigned int zerofill = 0;
            char *bp = buffer;
            char *bp = buffer;
            unsigned int i;
            unsigned int i;
 
 
            reclen = 0;
            reclen = 0;
 
 
            for (i = 0;
            for (i = 0;
                 i < bfd_get_section_size (s) && !finished;
                 i < bfd_get_section_size (s) && !finished;
                 i += binamount)
                 i += binamount)
              {
              {
                int binptr = 0;
                int binptr = 0;
 
 
                binamount = min (BINCHUNK, bfd_get_section_size (s) - i);
                binamount = min (BINCHUNK, bfd_get_section_size (s) - i);
 
 
                bfd_get_section_contents (abfd, s, binbuf, i, binamount);
                bfd_get_section_contents (abfd, s, binbuf, i, binamount);
 
 
                /* This keeps a rolling checksum, until we decide to output
                /* This keeps a rolling checksum, until we decide to output
                   the line: */
                   the line: */
                for (; ((binamount - binptr) > 0);)
                for (; ((binamount - binptr) > 0);)
                  {
                  {
                    pmon_make_fastrec (&bp, binbuf, &binptr, binamount,
                    pmon_make_fastrec (&bp, binbuf, &binptr, binamount,
                                       &reclen, &csum, &zerofill);
                                       &reclen, &csum, &zerofill);
                    if (reclen >= (MAXRECSIZE - CHECKSIZE))
                    if (reclen >= (MAXRECSIZE - CHECKSIZE))
                      {
                      {
                        reclen = pmon_checkset (reclen, &bp, &csum);
                        reclen = pmon_checkset (reclen, &bp, &csum);
                        pmon_download (buffer, reclen);
                        pmon_download (buffer, reclen);
                        finished = pmon_check_ack ("data record");
                        finished = pmon_check_ack ("data record");
                        if (finished)
                        if (finished)
                          {
                          {
                            zerofill = 0;        /* do not transmit pending zerofills */
                            zerofill = 0;        /* do not transmit pending zerofills */
                            break;
                            break;
                          }
                          }
 
 
                        if (deprecated_ui_load_progress_hook)
                        if (deprecated_ui_load_progress_hook)
                          deprecated_ui_load_progress_hook (s->name, i);
                          deprecated_ui_load_progress_hook (s->name, i);
 
 
                        if (hashmark)
                        if (hashmark)
                          {
                          {
                            putchar_unfiltered ('#');
                            putchar_unfiltered ('#');
                            gdb_flush (gdb_stdout);
                            gdb_flush (gdb_stdout);
                          }
                          }
 
 
                        bp = buffer;
                        bp = buffer;
                        reclen = 0;      /* buffer processed */
                        reclen = 0;      /* buffer processed */
                      }
                      }
                  }
                  }
              }
              }
 
 
            /* Ensure no out-standing zerofill requests: */
            /* Ensure no out-standing zerofill requests: */
            if (zerofill != 0)
            if (zerofill != 0)
              reclen = pmon_zeroset (reclen, &bp, &zerofill, &csum);
              reclen = pmon_zeroset (reclen, &bp, &zerofill, &csum);
 
 
            /* and then flush the line: */
            /* and then flush the line: */
            if (reclen > 0)
            if (reclen > 0)
              {
              {
                reclen = pmon_checkset (reclen, &bp, &csum);
                reclen = pmon_checkset (reclen, &bp, &csum);
                /* Currently pmon_checkset outputs the line terminator by
                /* Currently pmon_checkset outputs the line terminator by
                   default, so we write out the buffer so far: */
                   default, so we write out the buffer so far: */
                pmon_download (buffer, reclen);
                pmon_download (buffer, reclen);
                finished = pmon_check_ack ("record remnant");
                finished = pmon_check_ack ("record remnant");
              }
              }
          }
          }
 
 
        putchar_unfiltered ('\n');
        putchar_unfiltered ('\n');
      }
      }
 
 
  /* Terminate the transfer. We know that we have an empty output
  /* Terminate the transfer. We know that we have an empty output
     buffer at this point. */
     buffer at this point. */
  sprintf (buffer, "/E/E\n");   /* include dummy padding characters */
  sprintf (buffer, "/E/E\n");   /* include dummy padding characters */
  reclen = strlen (buffer);
  reclen = strlen (buffer);
  pmon_download (buffer, reclen);
  pmon_download (buffer, reclen);
 
 
  if (finished)
  if (finished)
    {                           /* Ignore the termination message: */
    {                           /* Ignore the termination message: */
      serial_flush_input (udp_in_use ? udp_desc : mips_desc);
      serial_flush_input (udp_in_use ? udp_desc : mips_desc);
    }
    }
  else
  else
    {                           /* Deal with termination message: */
    {                           /* Deal with termination message: */
      pmon_end_download (final, bintotal);
      pmon_end_download (final, bintotal);
    }
    }
 
 
  return;
  return;
}
}
 
 
/* mips_load -- download a file. */
/* mips_load -- download a file. */
 
 
static void
static void
mips_load (char *file, int from_tty)
mips_load (char *file, int from_tty)
{
{
  /* Get the board out of remote debugging mode.  */
  /* Get the board out of remote debugging mode.  */
  if (mips_exit_debug ())
  if (mips_exit_debug ())
    error ("mips_load:  Couldn't get into monitor mode.");
    error ("mips_load:  Couldn't get into monitor mode.");
 
 
  if (mips_monitor != MON_IDT)
  if (mips_monitor != MON_IDT)
    pmon_load_fast (file);
    pmon_load_fast (file);
  else
  else
    mips_load_srec (file);
    mips_load_srec (file);
 
 
  mips_initialize ();
  mips_initialize ();
 
 
  /* Finally, make the PC point at the start address */
  /* Finally, make the PC point at the start address */
  if (mips_monitor != MON_IDT)
  if (mips_monitor != MON_IDT)
    {
    {
      /* Work around problem where PMON monitor updates the PC after a load
      /* Work around problem where PMON monitor updates the PC after a load
         to a different value than GDB thinks it has. The following ensures
         to a different value than GDB thinks it has. The following ensures
         that the write_pc() WILL update the PC value: */
         that the write_pc() WILL update the PC value: */
      regcache_set_valid_p (get_current_regcache (),
      regcache_set_valid_p (get_current_regcache (),
                            gdbarch_pc_regnum (current_gdbarch), 0);
                            gdbarch_pc_regnum (current_gdbarch), 0);
    }
    }
  if (exec_bfd)
  if (exec_bfd)
    write_pc (bfd_get_start_address (exec_bfd));
    write_pc (bfd_get_start_address (exec_bfd));
 
 
  inferior_ptid = null_ptid;    /* No process now */
  inferior_ptid = null_ptid;    /* No process now */
 
 
/* This is necessary because many things were based on the PC at the time that
/* This is necessary because many things were based on the PC at the time that
   we attached to the monitor, which is no longer valid now that we have loaded
   we attached to the monitor, which is no longer valid now that we have loaded
   new code (and just changed the PC).  Another way to do this might be to call
   new code (and just changed the PC).  Another way to do this might be to call
   normal_stop, except that the stack may not be valid, and things would get
   normal_stop, except that the stack may not be valid, and things would get
   horribly confused... */
   horribly confused... */
 
 
  clear_symtab_users ();
  clear_symtab_users ();
}
}
 
 
 
 
/* Pass the command argument as a packet to PMON verbatim.  */
/* Pass the command argument as a packet to PMON verbatim.  */
 
 
static void
static void
pmon_command (char *args, int from_tty)
pmon_command (char *args, int from_tty)
{
{
  char buf[DATA_MAXLEN + 1];
  char buf[DATA_MAXLEN + 1];
  int rlen;
  int rlen;
 
 
  sprintf (buf, "0x0 %s", args);
  sprintf (buf, "0x0 %s", args);
  mips_send_packet (buf, 1);
  mips_send_packet (buf, 1);
  printf_filtered ("Send packet: %s\n", buf);
  printf_filtered ("Send packet: %s\n", buf);
 
 
  rlen = mips_receive_packet (buf, 1, mips_receive_wait);
  rlen = mips_receive_packet (buf, 1, mips_receive_wait);
  buf[rlen] = '\0';
  buf[rlen] = '\0';
  printf_filtered ("Received packet: %s\n", buf);
  printf_filtered ("Received packet: %s\n", buf);
}
}


extern initialize_file_ftype _initialize_remote_mips; /* -Wmissing-prototypes */
extern initialize_file_ftype _initialize_remote_mips; /* -Wmissing-prototypes */
 
 
void
void
_initialize_remote_mips (void)
_initialize_remote_mips (void)
{
{
  /* Initialize the fields in mips_ops that are common to all four targets.  */
  /* Initialize the fields in mips_ops that are common to all four targets.  */
  mips_ops.to_longname = "Remote MIPS debugging over serial line";
  mips_ops.to_longname = "Remote MIPS debugging over serial line";
  mips_ops.to_close = mips_close;
  mips_ops.to_close = mips_close;
  mips_ops.to_detach = mips_detach;
  mips_ops.to_detach = mips_detach;
  mips_ops.to_resume = mips_resume;
  mips_ops.to_resume = mips_resume;
  mips_ops.to_fetch_registers = mips_fetch_registers;
  mips_ops.to_fetch_registers = mips_fetch_registers;
  mips_ops.to_store_registers = mips_store_registers;
  mips_ops.to_store_registers = mips_store_registers;
  mips_ops.to_prepare_to_store = mips_prepare_to_store;
  mips_ops.to_prepare_to_store = mips_prepare_to_store;
  mips_ops.deprecated_xfer_memory = mips_xfer_memory;
  mips_ops.deprecated_xfer_memory = mips_xfer_memory;
  mips_ops.to_files_info = mips_files_info;
  mips_ops.to_files_info = mips_files_info;
  mips_ops.to_insert_breakpoint = mips_insert_breakpoint;
  mips_ops.to_insert_breakpoint = mips_insert_breakpoint;
  mips_ops.to_remove_breakpoint = mips_remove_breakpoint;
  mips_ops.to_remove_breakpoint = mips_remove_breakpoint;
  mips_ops.to_insert_watchpoint = mips_insert_watchpoint;
  mips_ops.to_insert_watchpoint = mips_insert_watchpoint;
  mips_ops.to_remove_watchpoint = mips_remove_watchpoint;
  mips_ops.to_remove_watchpoint = mips_remove_watchpoint;
  mips_ops.to_stopped_by_watchpoint = mips_stopped_by_watchpoint;
  mips_ops.to_stopped_by_watchpoint = mips_stopped_by_watchpoint;
  mips_ops.to_can_use_hw_breakpoint = mips_can_use_watchpoint;
  mips_ops.to_can_use_hw_breakpoint = mips_can_use_watchpoint;
  mips_ops.to_kill = mips_kill;
  mips_ops.to_kill = mips_kill;
  mips_ops.to_load = mips_load;
  mips_ops.to_load = mips_load;
  mips_ops.to_create_inferior = mips_create_inferior;
  mips_ops.to_create_inferior = mips_create_inferior;
  mips_ops.to_mourn_inferior = mips_mourn_inferior;
  mips_ops.to_mourn_inferior = mips_mourn_inferior;
  mips_ops.to_log_command = serial_log_command;
  mips_ops.to_log_command = serial_log_command;
  mips_ops.to_stratum = process_stratum;
  mips_ops.to_stratum = process_stratum;
  mips_ops.to_has_all_memory = 1;
  mips_ops.to_has_all_memory = 1;
  mips_ops.to_has_memory = 1;
  mips_ops.to_has_memory = 1;
  mips_ops.to_has_stack = 1;
  mips_ops.to_has_stack = 1;
  mips_ops.to_has_registers = 1;
  mips_ops.to_has_registers = 1;
  mips_ops.to_has_execution = 1;
  mips_ops.to_has_execution = 1;
  mips_ops.to_magic = OPS_MAGIC;
  mips_ops.to_magic = OPS_MAGIC;
 
 
  /* Copy the common fields to all four target vectors.  */
  /* Copy the common fields to all four target vectors.  */
  pmon_ops = ddb_ops = lsi_ops = mips_ops;
  pmon_ops = ddb_ops = lsi_ops = mips_ops;
 
 
  /* Initialize target-specific fields in the target vectors.  */
  /* Initialize target-specific fields in the target vectors.  */
  mips_ops.to_shortname = "mips";
  mips_ops.to_shortname = "mips";
  mips_ops.to_doc = "\
  mips_ops.to_doc = "\
Debug a board using the MIPS remote debugging protocol over a serial line.\n\
Debug a board using the MIPS remote debugging protocol over a serial line.\n\
The argument is the device it is connected to or, if it contains a colon,\n\
The argument is the device it is connected to or, if it contains a colon,\n\
HOST:PORT to access a board over a network";
HOST:PORT to access a board over a network";
  mips_ops.to_open = mips_open;
  mips_ops.to_open = mips_open;
  mips_ops.to_wait = mips_wait;
  mips_ops.to_wait = mips_wait;
 
 
  pmon_ops.to_shortname = "pmon";
  pmon_ops.to_shortname = "pmon";
  pmon_ops.to_doc = "\
  pmon_ops.to_doc = "\
Debug a board using the PMON MIPS remote debugging protocol over a serial\n\
Debug a board using the PMON MIPS remote debugging protocol over a serial\n\
line. The argument is the device it is connected to or, if it contains a\n\
line. The argument is the device it is connected to or, if it contains a\n\
colon, HOST:PORT to access a board over a network";
colon, HOST:PORT to access a board over a network";
  pmon_ops.to_open = pmon_open;
  pmon_ops.to_open = pmon_open;
  pmon_ops.to_wait = mips_wait;
  pmon_ops.to_wait = mips_wait;
 
 
  ddb_ops.to_shortname = "ddb";
  ddb_ops.to_shortname = "ddb";
  ddb_ops.to_doc = "\
  ddb_ops.to_doc = "\
Debug a board using the PMON MIPS remote debugging protocol over a serial\n\
Debug a board using the PMON MIPS remote debugging protocol over a serial\n\
line. The first argument is the device it is connected to or, if it contains\n\
line. The first argument is the device it is connected to or, if it contains\n\
a colon, HOST:PORT to access a board over a network.  The optional second\n\
a colon, HOST:PORT to access a board over a network.  The optional second\n\
parameter is the temporary file in the form HOST:FILENAME to be used for\n\
parameter is the temporary file in the form HOST:FILENAME to be used for\n\
TFTP downloads to the board.  The optional third parameter is the local name\n\
TFTP downloads to the board.  The optional third parameter is the local name\n\
of the TFTP temporary file, if it differs from the filename seen by the board.";
of the TFTP temporary file, if it differs from the filename seen by the board.";
  ddb_ops.to_open = ddb_open;
  ddb_ops.to_open = ddb_open;
  ddb_ops.to_wait = mips_wait;
  ddb_ops.to_wait = mips_wait;
 
 
  lsi_ops.to_shortname = "lsi";
  lsi_ops.to_shortname = "lsi";
  lsi_ops.to_doc = pmon_ops.to_doc;
  lsi_ops.to_doc = pmon_ops.to_doc;
  lsi_ops.to_open = lsi_open;
  lsi_ops.to_open = lsi_open;
  lsi_ops.to_wait = mips_wait;
  lsi_ops.to_wait = mips_wait;
 
 
  /* Add the targets.  */
  /* Add the targets.  */
  add_target (&mips_ops);
  add_target (&mips_ops);
  add_target (&pmon_ops);
  add_target (&pmon_ops);
  add_target (&ddb_ops);
  add_target (&ddb_ops);
  add_target (&lsi_ops);
  add_target (&lsi_ops);
 
 
  add_setshow_zinteger_cmd ("timeout", no_class, &mips_receive_wait, _("\
  add_setshow_zinteger_cmd ("timeout", no_class, &mips_receive_wait, _("\
Set timeout in seconds for remote MIPS serial I/O."), _("\
Set timeout in seconds for remote MIPS serial I/O."), _("\
Show timeout in seconds for remote MIPS serial I/O."), NULL,
Show timeout in seconds for remote MIPS serial I/O."), NULL,
                            NULL,
                            NULL,
                            NULL, /* FIXME: i18n: */
                            NULL, /* FIXME: i18n: */
                            &setlist, &showlist);
                            &setlist, &showlist);
 
 
  add_setshow_zinteger_cmd ("retransmit-timeout", no_class,
  add_setshow_zinteger_cmd ("retransmit-timeout", no_class,
                            &mips_retransmit_wait, _("\
                            &mips_retransmit_wait, _("\
Set retransmit timeout in seconds for remote MIPS serial I/O."), _("\
Set retransmit timeout in seconds for remote MIPS serial I/O."), _("\
Show retransmit timeout in seconds for remote MIPS serial I/O."), _("\
Show retransmit timeout in seconds for remote MIPS serial I/O."), _("\
This is the number of seconds to wait for an acknowledgement to a packet\n\
This is the number of seconds to wait for an acknowledgement to a packet\n\
before resending the packet."),
before resending the packet."),
                            NULL,
                            NULL,
                            NULL, /* FIXME: i18n: */
                            NULL, /* FIXME: i18n: */
                            &setlist, &showlist);
                            &setlist, &showlist);
 
 
  add_setshow_zinteger_cmd ("syn-garbage-limit", no_class,
  add_setshow_zinteger_cmd ("syn-garbage-limit", no_class,
                            &mips_syn_garbage,  _("\
                            &mips_syn_garbage,  _("\
Set the maximum number of characters to ignore when scanning for a SYN."), _("\
Set the maximum number of characters to ignore when scanning for a SYN."), _("\
Show the maximum number of characters to ignore when scanning for a SYN."), _("\
Show the maximum number of characters to ignore when scanning for a SYN."), _("\
This is the maximum number of characters GDB will ignore when trying to\n\
This is the maximum number of characters GDB will ignore when trying to\n\
synchronize with the remote system.  A value of -1 means that there is no\n\
synchronize with the remote system.  A value of -1 means that there is no\n\
limit. (Note that these characters are printed out even though they are\n\
limit. (Note that these characters are printed out even though they are\n\
ignored.)"),
ignored.)"),
                            NULL,
                            NULL,
                            NULL, /* FIXME: i18n: */
                            NULL, /* FIXME: i18n: */
                            &setlist, &showlist);
                            &setlist, &showlist);
 
 
  add_setshow_string_cmd ("monitor-prompt", class_obscure,
  add_setshow_string_cmd ("monitor-prompt", class_obscure,
                          &mips_monitor_prompt, _("\
                          &mips_monitor_prompt, _("\
Set the prompt that GDB expects from the monitor."), _("\
Set the prompt that GDB expects from the monitor."), _("\
Show the prompt that GDB expects from the monitor."), NULL,
Show the prompt that GDB expects from the monitor."), NULL,
                          NULL,
                          NULL,
                          NULL, /* FIXME: i18n: */
                          NULL, /* FIXME: i18n: */
                          &setlist, &showlist);
                          &setlist, &showlist);
 
 
  add_setshow_zinteger_cmd ("monitor-warnings", class_obscure,
  add_setshow_zinteger_cmd ("monitor-warnings", class_obscure,
                            &monitor_warnings, _("\
                            &monitor_warnings, _("\
Set printing of monitor warnings."), _("\
Set printing of monitor warnings."), _("\
Show printing of monitor warnings."), _("\
Show printing of monitor warnings."), _("\
When enabled, monitor warnings about hardware breakpoints will be displayed."),
When enabled, monitor warnings about hardware breakpoints will be displayed."),
                            NULL,
                            NULL,
                            NULL, /* FIXME: i18n: */
                            NULL, /* FIXME: i18n: */
                            &setlist, &showlist);
                            &setlist, &showlist);
 
 
  add_com ("pmon", class_obscure, pmon_command,
  add_com ("pmon", class_obscure, pmon_command,
           _("Send a packet to PMON (must be in debug mode)."));
           _("Send a packet to PMON (must be in debug mode)."));
 
 
  add_setshow_boolean_cmd ("mask-address", no_class, &mask_address_p, _("\
  add_setshow_boolean_cmd ("mask-address", no_class, &mask_address_p, _("\
Set zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\
Set zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\
Show zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\
Show zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\
Use \"on\" to enable the masking and \"off\" to disable it."),
Use \"on\" to enable the masking and \"off\" to disable it."),
                           NULL,
                           NULL,
                           NULL, /* FIXME: i18n: */
                           NULL, /* FIXME: i18n: */
                           &setlist, &showlist);
                           &setlist, &showlist);
}
}
 
 

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