202 lines
6.7 KiB
C
202 lines
6.7 KiB
C
/* 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 i387_to_double (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 double_to_i387 (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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