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/* Low level interface to ptrace, for the remote server for GDB.
   Copyright 1995, 1996, 1998, 1999, 2000, 2001
   Free Software Foundation, Inc.
 
   This file is part of GDB.
 
   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
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */
 
#include "server.h"
#include <sys/wait.h>
#include "frame.h"
#include "inferior.h"
 
#include <stdio.h>
#include <sys/param.h>
#include <sys/dir.h>
#include <sys/ptrace.h>
#include <sys/user.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <fcntl.h>
 
/***************Begin MY defs*********************/
static char my_registers[REGISTER_BYTES];
char *registers = my_registers;
/***************End MY defs*********************/
 
#ifdef HAVE_SYS_REG_H
#include <sys/reg.h>
#endif
 
/* Default the type of the ptrace transfer to int.  */
#ifndef PTRACE_XFER_TYPE
#define PTRACE_XFER_TYPE int
#endif
 
extern int errno;
 
static void initialize_arch (void);
 
/* Start an inferior process and returns its pid.
   ALLARGS is a vector of program-name and args. */
 
int
create_inferior (char *program, char **allargs)
{
  int pid;
 
  pid = fork ();
  if (pid < 0)
    perror_with_name ("fork");
 
  if (pid == 0)
    {
      ptrace (PTRACE_TRACEME, 0, 0, 0);
 
      execv (program, allargs);
 
      fprintf (stderr, "Cannot exec %s: %s.\n", program,
               errno < sys_nerr ? sys_errlist[errno] : "unknown error");
      fflush (stderr);
      _exit (0177);
    }
 
  return pid;
}
 
/* Kill the inferior process.  Make us have no inferior.  */
 
void
kill_inferior (void)
{
  if (inferior_pid == 0)
    return;
  ptrace (PTRACE_KILL, inferior_pid, 0, 0);
  wait (0);
/*************inferior_died ();****VK**************/
}
 
/* Return nonzero if the given thread is still alive.  */
int
mythread_alive (int pid)
{
  return 1;
}
 
/* Wait for process, returns status */
 
unsigned char
mywait (char *status)
{
  int pid;
  union wait w;
 
  pid = wait (&w);
  if (pid != inferior_pid)
    perror_with_name ("wait");
 
  if (WIFEXITED (w))
    {
      fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w));
      *status = 'W';
      return ((unsigned char) WEXITSTATUS (w));
    }
  else if (!WIFSTOPPED (w))
    {
      fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));
      *status = 'X';
      return ((unsigned char) WTERMSIG (w));
    }
 
  fetch_inferior_registers (0);
 
  *status = 'T';
  return ((unsigned char) WSTOPSIG (w));
}
 
/* Resume execution of the inferior process.
   If STEP is nonzero, single-step it.
   If SIGNAL is nonzero, give it that signal.  */
 
void
myresume (int step, int signal)
{
  errno = 0;
  ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, inferior_pid, 1, signal);
  if (errno)
    perror_with_name ("ptrace");
}
 
 
#if !defined (offsetof)
#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
#endif
 
/* U_REGS_OFFSET is the offset of the registers within the u area.  */
#if !defined (U_REGS_OFFSET)
#define U_REGS_OFFSET \
  ptrace (PT_READ_U, inferior_pid, \
          (PTRACE_ARG3_TYPE) (offsetof (struct user, u_ar0)), 0) \
    - KERNEL_U_ADDR
#endif
 
#ifdef I386_GNULINUX_TARGET
/* This module only supports access to the general purpose registers.
   Adjust the relevant constants accordingly.
 
   FIXME: kettenis/2001-03-28: We should really use PTRACE_GETREGS to
   get at the registers.  Better yet, we should try to share code with
   i386-linux-nat.c.  */
#undef NUM_FREGS
#define NUM_FREGS 0
#undef NUM_REGS
#define NUM_REGS NUM_GREGS
 
/* This stuff comes from i386-tdep.c.  */
 
/* i386_register_byte[i] is the offset into the register file of the
   start of register number i.  We initialize this from
   i386_register_raw_size.  */
int i386_register_byte[MAX_NUM_REGS];
 
/* i386_register_raw_size[i] is the number of bytes of storage in
   GDB's register array occupied by register i.  */
int i386_register_raw_size[MAX_NUM_REGS] = {
   4,  4,  4,  4,
   4,  4,  4,  4,
   4,  4,  4,  4,
   4,  4,  4,  4,
  10, 10, 10, 10,
  10, 10, 10, 10,
   4,  4,  4,  4,
   4,  4,  4,  4,
  16, 16, 16, 16,
  16, 16, 16, 16,
   4
};
 
static void
initialize_arch (void)
{
  /* Initialize the table saying where each register starts in the
     register file.  */
  {
    int i, offset;
 
    offset = 0;
    for (i = 0; i < MAX_NUM_REGS; i++)
      {
        i386_register_byte[i] = offset;
        offset += i386_register_raw_size[i];
      }
  }
}
 
/* This stuff comes from i386-linux-nat.c.  */
 
/* Mapping between the general-purpose registers in `struct user'
   format and GDB's register array layout.  */
static int regmap[] =
{
  EAX, ECX, EDX, EBX,
  UESP, EBP, ESI, EDI,
  EIP, EFL, CS, SS,
  DS, ES, FS, GS
};
 
/* Return the address of register REGNUM.  BLOCKEND is the value of
   u.u_ar0, which should point to the registers.  */
 
CORE_ADDR
register_u_addr (CORE_ADDR blockend, int regnum)
{
  return (blockend + 4 * regmap[regnum]);
}
#elif defined(TARGET_M68K)
static void
initialize_arch (void)
{
  return;
}
 
/* This table must line up with REGISTER_NAMES in tm-m68k.h */
static int regmap[] =
{
#ifdef PT_D0
  PT_D0, PT_D1, PT_D2, PT_D3, PT_D4, PT_D5, PT_D6, PT_D7,
  PT_A0, PT_A1, PT_A2, PT_A3, PT_A4, PT_A5, PT_A6, PT_USP,
  PT_SR, PT_PC,
#else
  14, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15,
  17, 18,
#endif
#ifdef PT_FP0
  PT_FP0, PT_FP1, PT_FP2, PT_FP3, PT_FP4, PT_FP5, PT_FP6, PT_FP7,
  PT_FPCR, PT_FPSR, PT_FPIAR
#else
  21, 24, 27, 30, 33, 36, 39, 42, 45, 46, 47
#endif
};
 
/* BLOCKEND is the value of u.u_ar0, and points to the place where GS
   is stored.  */
 
int
m68k_linux_register_u_addr (int blockend, int regnum)
{
  return (blockend + 4 * regmap[regnum]);
}
#elif defined(IA64_GNULINUX_TARGET)
#undef NUM_FREGS
#define NUM_FREGS 0
 
#include <asm/ptrace_offsets.h>
 
static int u_offsets[] =
  {
    /* general registers */
    -1,         /* gr0 not available; i.e, it's always zero */
    PT_R1,
    PT_R2,
    PT_R3,
    PT_R4,
    PT_R5,
    PT_R6,
    PT_R7,
    PT_R8,
    PT_R9,
    PT_R10,
    PT_R11,
    PT_R12,
    PT_R13,
    PT_R14,
    PT_R15,
    PT_R16,
    PT_R17,
    PT_R18,
    PT_R19,
    PT_R20,
    PT_R21,
    PT_R22,
    PT_R23,
    PT_R24,
    PT_R25,
    PT_R26,
    PT_R27,
    PT_R28,
    PT_R29,
    PT_R30,
    PT_R31,
    /* gr32 through gr127 not directly available via the ptrace interface */
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    /* Floating point registers */
    -1, -1,     /* f0 and f1 not available (f0 is +0.0 and f1 is +1.0) */
    PT_F2,
    PT_F3,
    PT_F4,
    PT_F5,
    PT_F6,
    PT_F7,
    PT_F8,
    PT_F9,
    PT_F10,
    PT_F11,
    PT_F12,
    PT_F13,
    PT_F14,
    PT_F15,
    PT_F16,
    PT_F17,
    PT_F18,
    PT_F19,
    PT_F20,
    PT_F21,
    PT_F22,
    PT_F23,
    PT_F24,
    PT_F25,
    PT_F26,
    PT_F27,
    PT_F28,
    PT_F29,
    PT_F30,
    PT_F31,
    PT_F32,
    PT_F33,
    PT_F34,
    PT_F35,
    PT_F36,
    PT_F37,
    PT_F38,
    PT_F39,
    PT_F40,
    PT_F41,
    PT_F42,
    PT_F43,
    PT_F44,
    PT_F45,
    PT_F46,
    PT_F47,
    PT_F48,
    PT_F49,
    PT_F50,
    PT_F51,
    PT_F52,
    PT_F53,
    PT_F54,
    PT_F55,
    PT_F56,
    PT_F57,
    PT_F58,
    PT_F59,
    PT_F60,
    PT_F61,
    PT_F62,
    PT_F63,
    PT_F64,
    PT_F65,
    PT_F66,
    PT_F67,
    PT_F68,
    PT_F69,
    PT_F70,
    PT_F71,
    PT_F72,
    PT_F73,
    PT_F74,
    PT_F75,
    PT_F76,
    PT_F77,
    PT_F78,
    PT_F79,
    PT_F80,
    PT_F81,
    PT_F82,
    PT_F83,
    PT_F84,
    PT_F85,
    PT_F86,
    PT_F87,
    PT_F88,
    PT_F89,
    PT_F90,
    PT_F91,
    PT_F92,
    PT_F93,
    PT_F94,
    PT_F95,
    PT_F96,
    PT_F97,
    PT_F98,
    PT_F99,
    PT_F100,
    PT_F101,
    PT_F102,
    PT_F103,
    PT_F104,
    PT_F105,
    PT_F106,
    PT_F107,
    PT_F108,
    PT_F109,
    PT_F110,
    PT_F111,
    PT_F112,
    PT_F113,
    PT_F114,
    PT_F115,
    PT_F116,
    PT_F117,
    PT_F118,
    PT_F119,
    PT_F120,
    PT_F121,
    PT_F122,
    PT_F123,
    PT_F124,
    PT_F125,
    PT_F126,
    PT_F127,
    /* predicate registers - we don't fetch these individually */
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    /* branch registers */
    PT_B0,
    PT_B1,
    PT_B2,
    PT_B3,
    PT_B4,
    PT_B5,
    PT_B6,
    PT_B7,
    /* virtual frame pointer and virtual return address pointer */
    -1, -1,
    /* other registers */
    PT_PR,
    PT_CR_IIP,  /* ip */
    PT_CR_IPSR, /* psr */
    PT_CFM,     /* cfm */
    /* kernel registers not visible via ptrace interface (?) */
    -1, -1, -1, -1, -1, -1, -1, -1,
    /* hole */
    -1, -1, -1, -1, -1, -1, -1, -1,
    PT_AR_RSC,
    PT_AR_BSP,
    PT_AR_BSPSTORE,
    PT_AR_RNAT,
    -1,
    -1,         /* Not available: FCR, IA32 floating control register */
    -1, -1,
    -1,         /* Not available: EFLAG */
    -1,         /* Not available: CSD */
    -1,         /* Not available: SSD */
    -1,         /* Not available: CFLG */
    -1,         /* Not available: FSR */
    -1,         /* Not available: FIR */
    -1,         /* Not available: FDR */
    -1,
    PT_AR_CCV,
    -1, -1, -1,
    PT_AR_UNAT,
    -1, -1, -1,
    PT_AR_FPSR,
    -1, -1, -1,
    -1,         /* Not available: ITC */
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1,
    PT_AR_PFS,
    PT_AR_LC,
    -1,         /* Not available: EC, the Epilog Count register */
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1,
    /* nat bits - not fetched directly; instead we obtain these bits from
       either rnat or unat or from memory. */
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,
  };
 
int
ia64_register_u_addr (int blockend, int regnum)
{
  int addr;
 
  if (regnum < 0 || regnum >= NUM_REGS)
    error ("Invalid register number %d.", regnum);
 
  addr = u_offsets[regnum];
  if (addr == -1)
    addr = 0;
 
  return addr;
}
 
static void
initialize_arch (void)
{
  return;
}
#endif
 
CORE_ADDR
register_addr (int regno, CORE_ADDR blockend)
{
  CORE_ADDR addr;
 
  if (regno < 0 || regno >= NUM_REGS)
    error ("Invalid register number %d.", regno);
 
  REGISTER_U_ADDR (addr, blockend, regno);
 
  return addr;
}
 
/* Fetch one register.  */
 
static void
fetch_register (int regno)
{
  CORE_ADDR regaddr;
  register int i;
 
  /* Offset of registers within the u area.  */
  unsigned int offset;
 
  offset = U_REGS_OFFSET;
 
  regaddr = register_addr (regno, offset);
  for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (PTRACE_XFER_TYPE))
    {
      errno = 0;
      *(PTRACE_XFER_TYPE *) &registers[REGISTER_BYTE (regno) + i] =
        ptrace (PTRACE_PEEKUSER, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, 0);
      regaddr += sizeof (PTRACE_XFER_TYPE);
      if (errno != 0)
        {
          /* Warning, not error, in case we are attached; sometimes the
             kernel doesn't let us at the registers.  */
          char *err = strerror (errno);
          char *msg = alloca (strlen (err) + 128);
          sprintf (msg, "reading register %d: %s", regno, err);
          error (msg);
          goto error_exit;
        }
    }
error_exit:;
}
 
/* Fetch all registers, or just one, from the child process.  */
 
void
fetch_inferior_registers (int regno)
{
  if (regno == -1 || regno == 0)
    for (regno = 0; regno < NUM_REGS - NUM_FREGS; regno++)
      fetch_register (regno);
  else
    fetch_register (regno);
}
 
/* Store our register values back into the inferior.
   If REGNO is -1, do this for all registers.
   Otherwise, REGNO specifies which register (so we can save time).  */
 
void
store_inferior_registers (int regno)
{
  CORE_ADDR regaddr;
  int i;
  unsigned int offset = U_REGS_OFFSET;
 
  if (regno >= 0)
    {
#if 0
      if (CANNOT_STORE_REGISTER (regno))
        return;
#endif
      regaddr = register_addr (regno, offset);
      errno = 0;
#if 0
      if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
        {
          scratch = *(int *) &registers[REGISTER_BYTE (regno)] | 0x3;
          ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
                  scratch, 0);
          if (errno != 0)
            {
              /* Error, even if attached.  Failing to write these two
                 registers is pretty serious.  */
              sprintf (buf, "writing register number %d", regno);
              perror_with_name (buf);
            }
        }
      else
#endif
        for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
          {
            errno = 0;
            ptrace (PTRACE_POKEUSER, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
                    *(int *) &registers[REGISTER_BYTE (regno) + i]);
            if (errno != 0)
              {
                /* Warning, not error, in case we are attached; sometimes the
                   kernel doesn't let us at the registers.  */
                char *err = strerror (errno);
                char *msg = alloca (strlen (err) + 128);
                sprintf (msg, "writing register %d: %s",
                         regno, err);
                error (msg);
                return;
              }
            regaddr += sizeof (int);
          }
    }
  else
    for (regno = 0; regno < NUM_REGS - NUM_FREGS; regno++)
      store_inferior_registers (regno);
}
 
/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
   in the NEW_SUN_PTRACE case.
   It ought to be straightforward.  But it appears that writing did
   not write the data that I specified.  I cannot understand where
   it got the data that it actually did write.  */
 
/* Copy LEN bytes from inferior's memory starting at MEMADDR
   to debugger memory starting at MYADDR.  */
 
void
read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
  register int i;
  /* Round starting address down to longword boundary.  */
  register CORE_ADDR addr = memaddr & -sizeof (PTRACE_XFER_TYPE);
  /* Round ending address up; get number of longwords that makes.  */
  register int count
    = (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1)
      / sizeof (PTRACE_XFER_TYPE);
  /* Allocate buffer of that many longwords.  */
  register PTRACE_XFER_TYPE *buffer
    = (PTRACE_XFER_TYPE *) alloca (count * sizeof (PTRACE_XFER_TYPE));
 
  /* Read all the longwords */
  for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
    {
      buffer[i] = ptrace (PTRACE_PEEKTEXT, inferior_pid, addr, 0);
    }
 
  /* Copy appropriate bytes out of the buffer.  */
  memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), len);
}
 
/* Copy LEN bytes of data from debugger memory at MYADDR
   to inferior's memory at MEMADDR.
   On failure (cannot write the inferior)
   returns the value of errno.  */
 
int
write_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
  register int i;
  /* Round starting address down to longword boundary.  */
  register CORE_ADDR addr = memaddr & -sizeof (PTRACE_XFER_TYPE);
  /* Round ending address up; get number of longwords that makes.  */
  register int count
  = (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1) / sizeof (PTRACE_XFER_TYPE);
  /* Allocate buffer of that many longwords.  */
  register PTRACE_XFER_TYPE *buffer = (PTRACE_XFER_TYPE *) alloca (count * sizeof (PTRACE_XFER_TYPE));
  extern int errno;
 
  /* Fill start and end extra bytes of buffer with existing memory data.  */
 
  buffer[0] = ptrace (PTRACE_PEEKTEXT, inferior_pid, addr, 0);
 
  if (count > 1)
    {
      buffer[count - 1]
        = ptrace (PTRACE_PEEKTEXT, inferior_pid,
                  addr + (count - 1) * sizeof (PTRACE_XFER_TYPE), 0);
    }
 
  /* Copy data to be written over corresponding part of buffer */
 
  memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), myaddr, len);
 
  /* Write the entire buffer.  */
 
  for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
    {
      errno = 0;
      ptrace (PTRACE_POKETEXT, inferior_pid, addr, buffer[i]);
      if (errno)
        return errno;
    }
 
  return 0;
}
 
void
initialize_low (void)
{
  initialize_arch ();
}

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[/] [or1k/] [trunk/] [insight/] [gdb/] [gdbserver/] [low-linux.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	578	markom	`/* Low level interface to ptrace, for the remote server for GDB.`
2			`Copyright 1995, 1996, 1998, 1999, 2000, 2001`
3			`Free Software Foundation, Inc.`
4
5			`This file is part of GDB.`
6
7			`This program is free software; you can redistribute it and/or modify`
8			`it under the terms of the GNU General Public License as published by`
9			`the Free Software Foundation; either version 2 of the License, or`
10			`(at your option) any later version.`
11
12			`This program is distributed in the hope that it will be useful,`
13			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
14			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
15			`GNU General Public License for more details.`
16
17			`You should have received a copy of the GNU General Public License`
18			`along with this program; if not, write to the Free Software`
19			`Foundation, Inc., 59 Temple Place - Suite 330,`
20			`Boston, MA 02111-1307, USA. */`
21
22			`#include "server.h"`
23			`#include <sys/wait.h>`
24			`#include "frame.h"`
25			`#include "inferior.h"`
26
27			`#include <stdio.h>`
28			`#include <sys/param.h>`
29			`#include <sys/dir.h>`
30			`#include <sys/ptrace.h>`
31			`#include <sys/user.h>`
32			`#include <signal.h>`
33			`#include <sys/ioctl.h>`
34			`#include <fcntl.h>`
35
36			`/*************Begin MY defs*******************/`
37			`static char my_registers[REGISTER_BYTES];`
38			`char *registers = my_registers;`
39			`/*************End MY defs*******************/`
40
41			`#ifdef HAVE_SYS_REG_H`
42			`#include <sys/reg.h>`
43			`#endif`
44
45			`/* Default the type of the ptrace transfer to int. */`
46			`#ifndef PTRACE_XFER_TYPE`
47			`#define PTRACE_XFER_TYPE int`
48			`#endif`
49
50			`extern int errno;`
51
52			`static void initialize_arch (void);`
53
54			`/* Start an inferior process and returns its pid.`
55			`ALLARGS is a vector of program-name and args. */`
56
57			`int`
58			`create_inferior (char program, char *allargs)`
59			`{`
60			`int pid;`
61
62			`pid = fork ();`
63			`if (pid < 0)`
64			`perror_with_name ("fork");`
65
66			`if (pid == 0)`
67			`{`
68			`ptrace (PTRACE_TRACEME, 0, 0, 0);`
69
70			`execv (program, allargs);`
71
72			`fprintf (stderr, "Cannot exec %s: %s.\n", program,`
73			`errno < sys_nerr ? sys_errlist[errno] : "unknown error");`
74			`fflush (stderr);`
75			`_exit (0177);`
76			`}`
77
78			`return pid;`
79			`}`
80
81			`/* Kill the inferior process. Make us have no inferior. */`
82
83			`void`
84			`kill_inferior (void)`
85			`{`
86			`if (inferior_pid == 0)`
87			`return;`
88			`ptrace (PTRACE_KILL, inferior_pid, 0, 0);`
89			`wait (0);`
90			`/***********inferior_died ();VK************/`
91			`}`
92
93			`/* Return nonzero if the given thread is still alive. */`
94			`int`
95			`mythread_alive (int pid)`
96			`{`
97			`return 1;`
98			`}`
99
100			`/* Wait for process, returns status */`
101
102			`unsigned char`
103			`mywait (char *status)`
104			`{`
105			`int pid;`
106			`union wait w;`
107
108			`pid = wait (&w);`
109			`if (pid != inferior_pid)`
110			`perror_with_name ("wait");`
111
112			`if (WIFEXITED (w))`
113			`{`
114			`fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w));`
115			`*status = 'W';`
116			`return ((unsigned char) WEXITSTATUS (w));`
117			`}`
118			`else if (!WIFSTOPPED (w))`
119			`{`
120			`fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));`
121			`*status = 'X';`
122			`return ((unsigned char) WTERMSIG (w));`
123			`}`
124
125			`fetch_inferior_registers (0);`
126
127			`*status = 'T';`
128			`return ((unsigned char) WSTOPSIG (w));`
129			`}`
130
131			`/* Resume execution of the inferior process.`
132			`If STEP is nonzero, single-step it.`
133			`If SIGNAL is nonzero, give it that signal. */`
134
135			`void`
136			`myresume (int step, int signal)`
137			`{`
138			`errno = 0;`
139			`ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, inferior_pid, 1, signal);`
140			`if (errno)`
141			`perror_with_name ("ptrace");`
142			`}`
143
144
145			`#if !defined (offsetof)`
146			`#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)`
147			`#endif`
148
149			`/* U_REGS_OFFSET is the offset of the registers within the u area. */`
150			`#if !defined (U_REGS_OFFSET)`
151			`#define U_REGS_OFFSET \`
152			`ptrace (PT_READ_U, inferior_pid, \`
153			`(PTRACE_ARG3_TYPE) (offsetof (struct user, u_ar0)), 0) \`
154			`- KERNEL_U_ADDR`
155			`#endif`
156
157			`#ifdef I386_GNULINUX_TARGET`
158			`/* This module only supports access to the general purpose registers.`
159			`Adjust the relevant constants accordingly.`
160
161			`FIXME: kettenis/2001-03-28: We should really use PTRACE_GETREGS to`
162			`get at the registers. Better yet, we should try to share code with`
163			`i386-linux-nat.c. */`
164			`#undef NUM_FREGS`
165			`#define NUM_FREGS 0`
166			`#undef NUM_REGS`
167			`#define NUM_REGS NUM_GREGS`
168
169			`/* This stuff comes from i386-tdep.c. */`
170
171			`/* i386_register_byte[i] is the offset into the register file of the`
172			`start of register number i. We initialize this from`
173			`i386_register_raw_size. */`
174			`int i386_register_byte[MAX_NUM_REGS];`
175
176			`/* i386_register_raw_size[i] is the number of bytes of storage in`
177			`GDB's register array occupied by register i. */`
178			`int i386_register_raw_size[MAX_NUM_REGS] = {`
179			`4, 4, 4, 4,`
180			`4, 4, 4, 4,`
181			`4, 4, 4, 4,`
182			`4, 4, 4, 4,`
183			`10, 10, 10, 10,`
184			`10, 10, 10, 10,`
185			`4, 4, 4, 4,`
186			`4, 4, 4, 4,`
187			`16, 16, 16, 16,`
188			`16, 16, 16, 16,`
189			`4`
190			`};`
191
192			`static void`
193			`initialize_arch (void)`
194			`{`
195			`/* Initialize the table saying where each register starts in the`
196			`register file. */`
197			`{`
198			`int i, offset;`
199
200			`offset = 0;`
201			`for (i = 0; i < MAX_NUM_REGS; i++)`
202			`{`
203			`i386_register_byte[i] = offset;`
204			`offset += i386_register_raw_size[i];`
205			`}`
206			`}`
207			`}`
208
209			`/* This stuff comes from i386-linux-nat.c. */`
210
211			/* Mapping between the general-purpose registers in `struct user'
212			`format and GDB's register array layout. */`
213			`static int regmap[] =`
214			`{`
215			`EAX, ECX, EDX, EBX,`
216			`UESP, EBP, ESI, EDI,`
217			`EIP, EFL, CS, SS,`
218			`DS, ES, FS, GS`
219			`};`
220
221			`/* Return the address of register REGNUM. BLOCKEND is the value of`
222			`u.u_ar0, which should point to the registers. */`
223
224			`CORE_ADDR`
225			`register_u_addr (CORE_ADDR blockend, int regnum)`
226			`{`
227			`return (blockend + 4 * regmap[regnum]);`
228			`}`
229			`#elif defined(TARGET_M68K)`
230			`static void`
231			`initialize_arch (void)`
232			`{`
233			`return;`
234			`}`
235
236			`/* This table must line up with REGISTER_NAMES in tm-m68k.h */`
237			`static int regmap[] =`
238			`{`
239			`#ifdef PT_D0`
240			`PT_D0, PT_D1, PT_D2, PT_D3, PT_D4, PT_D5, PT_D6, PT_D7,`
241			`PT_A0, PT_A1, PT_A2, PT_A3, PT_A4, PT_A5, PT_A6, PT_USP,`
242			`PT_SR, PT_PC,`
243			`#else`
244			`14, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15,`
245			`17, 18,`
246			`#endif`
247			`#ifdef PT_FP0`
248			`PT_FP0, PT_FP1, PT_FP2, PT_FP3, PT_FP4, PT_FP5, PT_FP6, PT_FP7,`
249			`PT_FPCR, PT_FPSR, PT_FPIAR`
250			`#else`
251			`21, 24, 27, 30, 33, 36, 39, 42, 45, 46, 47`
252			`#endif`
253			`};`
254
255			`/* BLOCKEND is the value of u.u_ar0, and points to the place where GS`
256			`is stored. */`
257
258			`int`
259			`m68k_linux_register_u_addr (int blockend, int regnum)`
260			`{`
261			`return (blockend + 4 * regmap[regnum]);`
262			`}`
263			`#elif defined(IA64_GNULINUX_TARGET)`
264			`#undef NUM_FREGS`
265			`#define NUM_FREGS 0`
266
267			`#include <asm/ptrace_offsets.h>`
268
269			`static int u_offsets[] =`
270			`{`
271			`/* general registers */`
272			`-1, /* gr0 not available; i.e, it's always zero */`
273			`PT_R1,`
274			`PT_R2,`
275			`PT_R3,`
276			`PT_R4,`
277			`PT_R5,`
278			`PT_R6,`
279			`PT_R7,`
280			`PT_R8,`
281			`PT_R9,`
282			`PT_R10,`
283			`PT_R11,`
284			`PT_R12,`
285			`PT_R13,`
286			`PT_R14,`
287			`PT_R15,`
288			`PT_R16,`
289			`PT_R17,`
290			`PT_R18,`
291			`PT_R19,`
292			`PT_R20,`
293			`PT_R21,`
294			`PT_R22,`
295			`PT_R23,`
296			`PT_R24,`
297			`PT_R25,`
298			`PT_R26,`
299			`PT_R27,`
300			`PT_R28,`
301			`PT_R29,`
302			`PT_R30,`
303			`PT_R31,`
304			`/* gr32 through gr127 not directly available via the ptrace interface */`
305			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
306			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
307			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
308			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
309			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
310			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
311			`/* Floating point registers */`
312			`-1, -1, /* f0 and f1 not available (f0 is +0.0 and f1 is +1.0) */`
313			`PT_F2,`
314			`PT_F3,`
315			`PT_F4,`
316			`PT_F5,`
317			`PT_F6,`
318			`PT_F7,`
319			`PT_F8,`
320			`PT_F9,`
321			`PT_F10,`
322			`PT_F11,`
323			`PT_F12,`
324			`PT_F13,`
325			`PT_F14,`
326			`PT_F15,`
327			`PT_F16,`
328			`PT_F17,`
329			`PT_F18,`
330			`PT_F19,`
331			`PT_F20,`
332			`PT_F21,`
333			`PT_F22,`
334			`PT_F23,`
335			`PT_F24,`
336			`PT_F25,`
337			`PT_F26,`
338			`PT_F27,`
339			`PT_F28,`
340			`PT_F29,`
341			`PT_F30,`
342			`PT_F31,`
343			`PT_F32,`
344			`PT_F33,`
345			`PT_F34,`
346			`PT_F35,`
347			`PT_F36,`
348			`PT_F37,`
349			`PT_F38,`
350			`PT_F39,`
351			`PT_F40,`
352			`PT_F41,`
353			`PT_F42,`
354			`PT_F43,`
355			`PT_F44,`
356			`PT_F45,`
357			`PT_F46,`
358			`PT_F47,`
359			`PT_F48,`
360			`PT_F49,`
361			`PT_F50,`
362			`PT_F51,`
363			`PT_F52,`
364			`PT_F53,`
365			`PT_F54,`
366			`PT_F55,`
367			`PT_F56,`
368			`PT_F57,`
369			`PT_F58,`
370			`PT_F59,`
371			`PT_F60,`
372			`PT_F61,`
373			`PT_F62,`
374			`PT_F63,`
375			`PT_F64,`
376			`PT_F65,`
377			`PT_F66,`
378			`PT_F67,`
379			`PT_F68,`
380			`PT_F69,`
381			`PT_F70,`
382			`PT_F71,`
383			`PT_F72,`
384			`PT_F73,`
385			`PT_F74,`
386			`PT_F75,`
387			`PT_F76,`
388			`PT_F77,`
389			`PT_F78,`
390			`PT_F79,`
391			`PT_F80,`
392			`PT_F81,`
393			`PT_F82,`
394			`PT_F83,`
395			`PT_F84,`
396			`PT_F85,`
397			`PT_F86,`
398			`PT_F87,`
399			`PT_F88,`
400			`PT_F89,`
401			`PT_F90,`
402			`PT_F91,`
403			`PT_F92,`
404			`PT_F93,`
405			`PT_F94,`
406			`PT_F95,`
407			`PT_F96,`
408			`PT_F97,`
409			`PT_F98,`
410			`PT_F99,`
411			`PT_F100,`
412			`PT_F101,`
413			`PT_F102,`
414			`PT_F103,`
415			`PT_F104,`
416			`PT_F105,`
417			`PT_F106,`
418			`PT_F107,`
419			`PT_F108,`
420			`PT_F109,`
421			`PT_F110,`
422			`PT_F111,`
423			`PT_F112,`
424			`PT_F113,`
425			`PT_F114,`
426			`PT_F115,`
427			`PT_F116,`
428			`PT_F117,`
429			`PT_F118,`
430			`PT_F119,`
431			`PT_F120,`
432			`PT_F121,`
433			`PT_F122,`
434			`PT_F123,`
435			`PT_F124,`
436			`PT_F125,`
437			`PT_F126,`
438			`PT_F127,`
439			`/* predicate registers - we don't fetch these individually */`
440			`-1, -1, -1, -1, -1, -1, -1, -1,`
441			`-1, -1, -1, -1, -1, -1, -1, -1,`
442			`-1, -1, -1, -1, -1, -1, -1, -1,`
443			`-1, -1, -1, -1, -1, -1, -1, -1,`
444			`-1, -1, -1, -1, -1, -1, -1, -1,`
445			`-1, -1, -1, -1, -1, -1, -1, -1,`
446			`-1, -1, -1, -1, -1, -1, -1, -1,`
447			`-1, -1, -1, -1, -1, -1, -1, -1,`
448			`/* branch registers */`
449			`PT_B0,`
450			`PT_B1,`
451			`PT_B2,`
452			`PT_B3,`
453			`PT_B4,`
454			`PT_B5,`
455			`PT_B6,`
456			`PT_B7,`
457			`/* virtual frame pointer and virtual return address pointer */`
458			`-1, -1,`
459			`/* other registers */`
460			`PT_PR,`
461			`PT_CR_IIP, /* ip */`
462			`PT_CR_IPSR, /* psr */`
463			`PT_CFM, /* cfm */`
464			`/* kernel registers not visible via ptrace interface (?) */`
465			`-1, -1, -1, -1, -1, -1, -1, -1,`
466			`/* hole */`
467			`-1, -1, -1, -1, -1, -1, -1, -1,`
468			`PT_AR_RSC,`
469			`PT_AR_BSP,`
470			`PT_AR_BSPSTORE,`
471			`PT_AR_RNAT,`
472			`-1,`
473			`-1, /* Not available: FCR, IA32 floating control register */`
474			`-1, -1,`
475			`-1, /* Not available: EFLAG */`
476			`-1, /* Not available: CSD */`
477			`-1, /* Not available: SSD */`
478			`-1, /* Not available: CFLG */`
479			`-1, /* Not available: FSR */`
480			`-1, /* Not available: FIR */`
481			`-1, /* Not available: FDR */`
482			`-1,`
483			`PT_AR_CCV,`
484			`-1, -1, -1,`
485			`PT_AR_UNAT,`
486			`-1, -1, -1,`
487			`PT_AR_FPSR,`
488			`-1, -1, -1,`
489			`-1, /* Not available: ITC */`
490			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
491			`-1, -1, -1, -1, -1, -1, -1, -1, -1,`
492			`PT_AR_PFS,`
493			`PT_AR_LC,`
494			`-1, /* Not available: EC, the Epilog Count register */`
495			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
496			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
497			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
498			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
499			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
500			`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,`
501			`-1,`
502			`/* nat bits - not fetched directly; instead we obtain these bits from`
503			`either rnat or unat or from memory. */`
504			`-1, -1, -1, -1, -1, -1, -1, -1,`
505			`-1, -1, -1, -1, -1, -1, -1, -1,`
506			`-1, -1, -1, -1, -1, -1, -1, -1,`
507			`-1, -1, -1, -1, -1, -1, -1, -1,`
508			`-1, -1, -1, -1, -1, -1, -1, -1,`
509			`-1, -1, -1, -1, -1, -1, -1, -1,`
510			`-1, -1, -1, -1, -1, -1, -1, -1,`
511			`-1, -1, -1, -1, -1, -1, -1, -1,`
512			`-1, -1, -1, -1, -1, -1, -1, -1,`
513			`-1, -1, -1, -1, -1, -1, -1, -1,`
514			`-1, -1, -1, -1, -1, -1, -1, -1,`
515			`-1, -1, -1, -1, -1, -1, -1, -1,`
516			`-1, -1, -1, -1, -1, -1, -1, -1,`
517			`-1, -1, -1, -1, -1, -1, -1, -1,`
518			`-1, -1, -1, -1, -1, -1, -1, -1,`
519			`-1, -1, -1, -1, -1, -1, -1, -1,`
520			`};`
521
522			`int`
523			`ia64_register_u_addr (int blockend, int regnum)`
524			`{`
525			`int addr;`
526
527			`if (regnum < 0 \|\| regnum >= NUM_REGS)`
528			`error ("Invalid register number %d.", regnum);`
529
530			`addr = u_offsets[regnum];`
531			`if (addr == -1)`
532			`addr = 0;`
533
534			`return addr;`
535			`}`
536
537			`static void`
538			`initialize_arch (void)`
539			`{`
540			`return;`
541			`}`
542			`#endif`
543
544			`CORE_ADDR`
545			`register_addr (int regno, CORE_ADDR blockend)`
546			`{`
547			`CORE_ADDR addr;`
548
549			`if (regno < 0 \|\| regno >= NUM_REGS)`
550			`error ("Invalid register number %d.", regno);`
551
552			`REGISTER_U_ADDR (addr, blockend, regno);`
553
554			`return addr;`
555			`}`
556
557			`/* Fetch one register. */`
558
559			`static void`
560			`fetch_register (int regno)`
561			`{`
562			`CORE_ADDR regaddr;`
563			`register int i;`
564
565			`/* Offset of registers within the u area. */`
566			`unsigned int offset;`
567
568			`offset = U_REGS_OFFSET;`
569
570			`regaddr = register_addr (regno, offset);`
571			`for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (PTRACE_XFER_TYPE))`
572			`{`
573			`errno = 0;`
574			`(PTRACE_XFER_TYPE ) &registers[REGISTER_BYTE (regno) + i] =`
575			`ptrace (PTRACE_PEEKUSER, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, 0);`
576			`regaddr += sizeof (PTRACE_XFER_TYPE);`
577			`if (errno != 0)`
578			`{`
579			`/* Warning, not error, in case we are attached; sometimes the`
580			`kernel doesn't let us at the registers. */`
581			`char *err = strerror (errno);`
582			`char *msg = alloca (strlen (err) + 128);`
583			`sprintf (msg, "reading register %d: %s", regno, err);`
584			`error (msg);`
585			`goto error_exit;`
586			`}`
587			`}`
588			`error_exit:;`
589			`}`
590
591			`/* Fetch all registers, or just one, from the child process. */`
592
593			`void`
594			`fetch_inferior_registers (int regno)`
595			`{`
596			`if (regno == -1 \|\| regno == 0)`
597			`for (regno = 0; regno < NUM_REGS - NUM_FREGS; regno++)`
598			`fetch_register (regno);`
599			`else`
600			`fetch_register (regno);`
601			`}`
602
603			`/* Store our register values back into the inferior.`
604			`If REGNO is -1, do this for all registers.`
605			`Otherwise, REGNO specifies which register (so we can save time). */`
606
607			`void`
608			`store_inferior_registers (int regno)`
609			`{`
610			`CORE_ADDR regaddr;`
611			`int i;`
612			`unsigned int offset = U_REGS_OFFSET;`
613
614			`if (regno >= 0)`
615			`{`
616			`#if 0`
617			`if (CANNOT_STORE_REGISTER (regno))`
618			`return;`
619			`#endif`
620			`regaddr = register_addr (regno, offset);`
621			`errno = 0;`
622			`#if 0`
623			`if (regno == PCOQ_HEAD_REGNUM \|\| regno == PCOQ_TAIL_REGNUM)`
624			`{`
625			`scratch = (int ) &registers[REGISTER_BYTE (regno)] \| 0x3;`
626			`ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,`
627			`scratch, 0);`
628			`if (errno != 0)`
629			`{`
630			`/* Error, even if attached. Failing to write these two`
631			`registers is pretty serious. */`
632			`sprintf (buf, "writing register number %d", regno);`
633			`perror_with_name (buf);`
634			`}`
635			`}`
636			`else`
637			`#endif`
638			`for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))`
639			`{`
640			`errno = 0;`
641			`ptrace (PTRACE_POKEUSER, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,`
642			`(int ) &registers[REGISTER_BYTE (regno) + i]);`
643			`if (errno != 0)`
644			`{`
645			`/* Warning, not error, in case we are attached; sometimes the`
646			`kernel doesn't let us at the registers. */`
647			`char *err = strerror (errno);`
648			`char *msg = alloca (strlen (err) + 128);`
649			`sprintf (msg, "writing register %d: %s",`
650			`regno, err);`
651			`error (msg);`
652			`return;`
653			`}`
654			`regaddr += sizeof (int);`
655			`}`
656			`}`
657			`else`
658			`for (regno = 0; regno < NUM_REGS - NUM_FREGS; regno++)`
659			`store_inferior_registers (regno);`
660			`}`
661
662			`/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory`
663			`in the NEW_SUN_PTRACE case.`
664			`It ought to be straightforward. But it appears that writing did`
665			`not write the data that I specified. I cannot understand where`
666			`it got the data that it actually did write. */`
667
668			`/* Copy LEN bytes from inferior's memory starting at MEMADDR`
669			`to debugger memory starting at MYADDR. */`
670
671			`void`
672			`read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)`
673			`{`
674			`register int i;`
675			`/* Round starting address down to longword boundary. */`
676			`register CORE_ADDR addr = memaddr & -sizeof (PTRACE_XFER_TYPE);`
677			`/* Round ending address up; get number of longwords that makes. */`
678			`register int count`
679			`= (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1)`
680			`/ sizeof (PTRACE_XFER_TYPE);`
681			`/* Allocate buffer of that many longwords. */`
682			`register PTRACE_XFER_TYPE *buffer`
683			`= (PTRACE_XFER_TYPE ) alloca (count sizeof (PTRACE_XFER_TYPE));`
684
685			`/* Read all the longwords */`
686			`for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))`
687			`{`
688			`buffer[i] = ptrace (PTRACE_PEEKTEXT, inferior_pid, addr, 0);`
689			`}`
690
691			`/* Copy appropriate bytes out of the buffer. */`
692			`memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), len);`
693			`}`
694
695			`/* Copy LEN bytes of data from debugger memory at MYADDR`
696			`to inferior's memory at MEMADDR.`
697			`On failure (cannot write the inferior)`
698			`returns the value of errno. */`
699
700			`int`
701			`write_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)`
702			`{`
703			`register int i;`
704			`/* Round starting address down to longword boundary. */`
705			`register CORE_ADDR addr = memaddr & -sizeof (PTRACE_XFER_TYPE);`
706			`/* Round ending address up; get number of longwords that makes. */`
707			`register int count`
708			`= (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1) / sizeof (PTRACE_XFER_TYPE);`
709			`/* Allocate buffer of that many longwords. */`
710			`register PTRACE_XFER_TYPE buffer = (PTRACE_XFER_TYPE ) alloca (count * sizeof (PTRACE_XFER_TYPE));`
711			`extern int errno;`
712
713			`/* Fill start and end extra bytes of buffer with existing memory data. */`
714
715			`buffer[0] = ptrace (PTRACE_PEEKTEXT, inferior_pid, addr, 0);`
716
717			`if (count > 1)`
718			`{`
719			`buffer[count - 1]`
720			`= ptrace (PTRACE_PEEKTEXT, inferior_pid,`
721			`addr + (count - 1) * sizeof (PTRACE_XFER_TYPE), 0);`
722			`}`
723
724			`/* Copy data to be written over corresponding part of buffer */`
725
726			`memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), myaddr, len);`
727
728			`/* Write the entire buffer. */`
729
730			`for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))`
731			`{`
732			`errno = 0;`
733			`ptrace (PTRACE_POKETEXT, inferior_pid, addr, buffer[i]);`
734			`if (errno)`
735			`return errno;`
736			`}`
737
738			`return 0;`
739			`}`
740
741			`void`
742			`initialize_low (void)`
743			`{`
744			`initialize_arch ();`
745			`}`