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[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [config/] [i386/] [tm-sun386.h] - Blame information for rev 106

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1 106 markom
/* Parameters for a Sun 386i target machine, for GDB, the GNU debugger.
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   Copyright 1986, 1987, 1991, 1992, 1993 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 2 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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#if !defined (TM_SUN386_H)
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#define TM_SUN386_H 1
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#include "i386/tm-i386.h"
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#ifndef sun386
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#define sun386
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#endif
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#define SUNOS4
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#define USE_MACHINE_REG_H
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/* Perhaps some day this will work even without the following #define */
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#define COFF_ENCAPSULATE
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#ifdef COFF_ENCAPSULATE
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/* Avoid conflicts between our include files and <sys/exec.h>
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   (maybe not needed anymore).  */
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#define _EXEC_
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#endif
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/* sun386 ptrace seems unable to change the frame pointer */
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#define PTRACE_FP_BUG
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/* Address of end of stack space.  */
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#define STACK_END_ADDR 0xfc000000
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/* Number of machine registers */
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#undef  NUM_REGS
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#define NUM_REGS 35
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/* Initializer for an array of names of registers.  There should be NUM_REGS
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   strings in this initializer.  The order of the first 8 registers must match
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   the compiler's numbering scheme (which is the same as the 386 scheme) also,
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   this table must match regmap in i386-pinsn.c. */
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#undef  REGISTER_NAMES
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#define REGISTER_NAMES { "gs", "fs", "es", "ds",                \
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                         "edi", "esi", "ebp", "esp",            \
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                         "ebx", "edx", "ecx", "eax",            \
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                         "retaddr", "trapnum", "errcode", "ip", \
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                         "cs", "ps", "sp", "ss",                \
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                         "fst0", "fst1", "fst2", "fst3",        \
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                         "fst4", "fst5", "fst6", "fst7",        \
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                         "fctrl", "fstat", "ftag", "fip",       \
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                         "fcs", "fopoff", "fopsel"              \
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                         }
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/* Register numbers of various important registers.
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   Note that some of these values are "real" register numbers,
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   and correspond to the general registers of the machine,
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   and some are "phony" register numbers which are too large
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   to be actual register numbers as far as the user is concerned
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   but do serve to get the desired values when passed to read_register.  */
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#undef  FP_REGNUM
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#define FP_REGNUM   6           /* (ebp) Contains address of executing stack frame */
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#undef  SP_REGNUM
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#define SP_REGNUM  18           /* (usp) Contains address of top of stack */
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#undef  PS_REGNUM
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#define PS_REGNUM  17           /* (ps)  Contains processor status */
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#undef  PC_REGNUM
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#define PC_REGNUM  15           /* (eip) Contains program counter */
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#undef  FP0_REGNUM
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#define FP0_REGNUM 20           /* Floating point register 0 */
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#undef  FPC_REGNUM
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#define FPC_REGNUM 28           /* 80387 control register */
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/* Total amount of space needed to store our copies of the machine's
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   register state, the array `registers'.  */
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#undef  REGISTER_BYTES
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#define REGISTER_BYTES (20*4+8*10+7*4)
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/* Index within `registers' of the first byte of the space for
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   register N.  */
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#undef  REGISTER_BYTE
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#define REGISTER_BYTE(N) \
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 ((N) >= FPC_REGNUM ? (((N) - FPC_REGNUM) * 4) + 160    \
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  : (N) >= FP0_REGNUM ? (((N) - FP0_REGNUM) * 10) + 80  \
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  : (N) * 4)
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/* Number of bytes of storage in the actual machine representation
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   for register N.  */
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#undef  REGISTER_RAW_SIZE
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#define REGISTER_RAW_SIZE(N) (((unsigned)((N) - FP0_REGNUM)) < 8 ? 10 : 4)
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/* Number of bytes of storage in the program's representation
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   for register N. */
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#undef  REGISTER_VIRTUAL_SIZE
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#define REGISTER_VIRTUAL_SIZE(N) (((unsigned)((N) - FP0_REGNUM)) < 8 ? 8 : 4)
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/* Nonzero if register N requires conversion
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   from raw format to virtual format.  */
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#undef  REGISTER_CONVERTIBLE
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#define REGISTER_CONVERTIBLE(N) (((unsigned)((N) - FP0_REGNUM)) < 8)
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/* Convert data from raw format for register REGNUM in buffer FROM
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   to virtual format with type TYPE in buffer TO.  */
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#undef  REGISTER_CONVERT_TO_VIRTUAL
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#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
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{ \
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  double val; \
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  i387_to_double ((FROM), (char *)&val); \
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  store_floating ((TO), TYPE_LENGTH (TYPE), val); \
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}
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extern void
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i387_to_double PARAMS ((char *, char *));
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/* Convert data from virtual format with type TYPE in buffer FROM
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   to raw format for register REGNUM in buffer TO.  */
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#undef  REGISTER_CONVERT_TO_RAW
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#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
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{ \
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  double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
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  double_to_i387((char *)&val, (TO)); \
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}
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extern void
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double_to_i387 PARAMS ((char *, char *));
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/* Return the GDB type object for the "standard" data type
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   of data in register N.  */
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#undef  REGISTER_VIRTUAL_TYPE
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#define REGISTER_VIRTUAL_TYPE(N) \
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 (((unsigned)((N) - FP0_REGNUM)) < 8 ? builtin_type_double : builtin_type_int)
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/* Extract from an array REGBUF containing the (raw) register state
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   a function return value of type TYPE, and copy that, in virtual format,
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   into VALBUF.  */
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#undef  EXTRACT_RETURN_VALUE
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#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
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  memcpy (VALBUF, REGBUF + REGISTER_BYTE (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 11), TYPE_LENGTH (TYPE))
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/* Write into appropriate registers a function return value
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   of type TYPE, given in virtual format.  */
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#undef  STORE_RETURN_VALUE
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#define STORE_RETURN_VALUE(TYPE,VALBUF) \
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  write_register_bytes (REGISTER_BYTE (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 11), VALBUF, TYPE_LENGTH (TYPE))
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/* Describe the pointer in each stack frame to the previous stack frame
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   (its caller).  */
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/* FRAME_CHAIN takes a frame's nominal address
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   and produces the frame's chain-pointer. */
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#undef  FRAME_CHAIN
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#define FRAME_CHAIN(thisframe) \
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  (!inside_entry_file ((thisframe)->pc) ? \
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   read_memory_integer ((thisframe)->frame, 4) :\
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   0)
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/* Define other aspects of the stack frame.  */
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/* A macro that tells us whether the function invocation represented
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   by FI does not have a frame on the stack associated with it.  If it
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   does not, FRAMELESS is set to 1, else 0.  */
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#undef  FRAMELESS_FUNCTION_INVOCATION
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#define FRAMELESS_FUNCTION_INVOCATION(FI) \
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     (frameless_look_for_prologue (FI))
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#undef  FRAME_SAVED_PC
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#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4))
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/* Insert the specified number of args and function address
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   into a call sequence of the above form stored at DUMMYNAME.  */
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#undef  FIX_CALL_DUMMY
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#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)   \
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{ \
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        *(int *)((char *)(dummyname) + 1) = (int)(fun) - (pc) - 5; \
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}
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#endif /* !defined (TM_SUN386_H) */

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