c653bc6d90
<Ulf.Lunde@kvatro.no> and Dag H. Wanvik <Dag.H.Wanvik@kvatro.no>. * coffread.c (getfilename): Eliminate COFF_NO_LONG_FILE_NAMES test, which is apparently left over from when we used native include files and couldn't depend on the member names being there. * tm-3b1.h, tm-altos.h, tm-i386v.h: Don't set it. ALso fix this in tm-i860.h which isn't ChangeLogged since it's sanitized out for lack of paperwork.
319 lines
9.6 KiB
C
319 lines
9.6 KiB
C
/* Macro definitions for i386, Unix System V.
|
||
Copyright 1986, 1987, 1989, 1991, 1992, 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#if !defined (TM_I386V_H)
|
||
#define TM_I386V_H 1
|
||
|
||
/*
|
||
* Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu)
|
||
* July 1988
|
||
*/
|
||
|
||
#define TARGET_BYTE_ORDER LITTLE_ENDIAN
|
||
|
||
/* turn this on when rest of gdb is ready */
|
||
#define IEEE_FLOAT
|
||
|
||
/* Define this if the C compiler puts an underscore at the front
|
||
of external names before giving them to the linker. */
|
||
|
||
/* #define NAMES_HAVE_UNDERSCORE */
|
||
|
||
/* number of traps that happen between exec'ing the shell
|
||
* to run an inferior, and when we finally get to
|
||
* the inferior code. This is 2 on most implementations.
|
||
*/
|
||
#ifndef START_INFERIOR_TRAPS_EXPECTED
|
||
#define START_INFERIOR_TRAPS_EXPECTED 4
|
||
#endif
|
||
|
||
/* Offset from address of function to start of its code.
|
||
Zero on most machines. */
|
||
|
||
#define FUNCTION_START_OFFSET 0
|
||
|
||
/* Advance PC across any function entry prologue instructions
|
||
to reach some "real" code. */
|
||
|
||
#define SKIP_PROLOGUE(frompc) {(frompc) = i386_skip_prologue((frompc));}
|
||
|
||
extern int
|
||
i386_skip_prologue PARAMS ((int));
|
||
|
||
/* Immediately after a function call, return the saved pc.
|
||
Can't always go through the frames for this because on some machines
|
||
the new frame is not set up until the new function executes
|
||
some instructions. */
|
||
|
||
#define SAVED_PC_AFTER_CALL(frame) \
|
||
(read_memory_integer (read_register (SP_REGNUM), 4))
|
||
|
||
/* Address of end of stack space. */
|
||
|
||
#define STACK_END_ADDR 0x80000000
|
||
|
||
/* Stack grows downward. */
|
||
|
||
#define INNER_THAN <
|
||
|
||
/* Sequence of bytes for breakpoint instruction. */
|
||
|
||
#define BREAKPOINT {0xcc}
|
||
|
||
/* Amount PC must be decremented by after a breakpoint.
|
||
This is often the number of bytes in BREAKPOINT
|
||
but not always. */
|
||
|
||
#ifndef DECR_PC_AFTER_BREAK
|
||
#define DECR_PC_AFTER_BREAK 1
|
||
#endif
|
||
|
||
/* Nonzero if instruction at PC is a return instruction. */
|
||
|
||
#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 1) == 0xc3)
|
||
|
||
/* Return 1 if P points to an invalid floating point value.
|
||
LEN is the length in bytes -- not relevant on the 386. */
|
||
|
||
#define INVALID_FLOAT(p, len) (0)
|
||
|
||
/* Say how long (ordinary) registers are. */
|
||
|
||
#define REGISTER_TYPE long
|
||
|
||
/* Number of machine registers */
|
||
|
||
#define NUM_REGS 16
|
||
|
||
/* Initializer for an array of names of registers.
|
||
There should be NUM_REGS strings in this initializer. */
|
||
|
||
/* the order of the first 8 registers must match the compiler's
|
||
* numbering scheme (which is the same as the 386 scheme)
|
||
* also, this table must match regmap in i386-pinsn.c.
|
||
*/
|
||
#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \
|
||
"esp", "ebp", "esi", "edi", \
|
||
"eip", "ps", "cs", "ss", \
|
||
"ds", "es", "fs", "gs", \
|
||
}
|
||
|
||
/* Register numbers of various important registers.
|
||
Note that some of these values are "real" register numbers,
|
||
and correspond to the general registers of the machine,
|
||
and some are "phony" register numbers which are too large
|
||
to be actual register numbers as far as the user is concerned
|
||
but do serve to get the desired values when passed to read_register. */
|
||
|
||
#define FP_REGNUM 5 /* Contains address of executing stack frame */
|
||
#define SP_REGNUM 4 /* Contains address of top of stack */
|
||
|
||
#define PC_REGNUM 8
|
||
#define PS_REGNUM 9
|
||
|
||
/* Total amount of space needed to store our copies of the machine's
|
||
register state, the array `registers'. */
|
||
#define REGISTER_BYTES (NUM_REGS * 4)
|
||
|
||
/* Index within `registers' of the first byte of the space for
|
||
register N. */
|
||
|
||
#define REGISTER_BYTE(N) ((N)*4)
|
||
|
||
/* Number of bytes of storage in the actual machine representation
|
||
for register N. */
|
||
|
||
#define REGISTER_RAW_SIZE(N) (4)
|
||
|
||
/* Number of bytes of storage in the program's representation
|
||
for register N. */
|
||
|
||
#define REGISTER_VIRTUAL_SIZE(N) (4)
|
||
|
||
/* Largest value REGISTER_RAW_SIZE can have. */
|
||
|
||
#define MAX_REGISTER_RAW_SIZE 4
|
||
|
||
/* Largest value REGISTER_VIRTUAL_SIZE can have. */
|
||
|
||
#define MAX_REGISTER_VIRTUAL_SIZE 4
|
||
|
||
/* Nonzero if register N requires conversion
|
||
from raw format to virtual format. */
|
||
|
||
#define REGISTER_CONVERTIBLE(N) (0)
|
||
|
||
/* Convert data from raw format for register REGNUM
|
||
to virtual format for register REGNUM. */
|
||
|
||
#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
|
||
{memcpy ((TO), (FROM), 4);}
|
||
|
||
/* Convert data from virtual format for register REGNUM
|
||
to raw format for register REGNUM. */
|
||
|
||
#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
|
||
{memcpy ((TO), (FROM), 4);}
|
||
|
||
/* Return the GDB type object for the "standard" data type
|
||
of data in register N. */
|
||
/* Perhaps si and di should go here, but potentially they could be
|
||
used for things other than address. */
|
||
#define REGISTER_VIRTUAL_TYPE(N) \
|
||
((N) == PC_REGNUM || (N) == FP_REGNUM || (N) == SP_REGNUM ? \
|
||
lookup_pointer_type (builtin_type_void) : builtin_type_int)
|
||
|
||
/* Store the address of the place in which to copy the structure the
|
||
subroutine will return. This is called from call_function. */
|
||
|
||
#define STORE_STRUCT_RETURN(ADDR, SP) \
|
||
{ (SP) -= sizeof (ADDR); \
|
||
write_memory ((SP), (char *) &(ADDR), sizeof (ADDR)); }
|
||
|
||
/* Extract from an array REGBUF containing the (raw) register state
|
||
a function return value of type TYPE, and copy that, in virtual format,
|
||
into VALBUF. */
|
||
|
||
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
|
||
memcpy ((VALBUF), (REGBUF), TYPE_LENGTH (TYPE))
|
||
|
||
/* Write into appropriate registers a function return value
|
||
of type TYPE, given in virtual format. */
|
||
|
||
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
|
||
write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE))
|
||
|
||
/* Extract from an array REGBUF containing the (raw) register state
|
||
the address in which a function should return its structure value,
|
||
as a CORE_ADDR (or an expression that can be used as one). */
|
||
|
||
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF))
|
||
|
||
|
||
/* Describe the pointer in each stack frame to the previous stack frame
|
||
(its caller). */
|
||
|
||
/* FRAME_CHAIN takes a frame's nominal address
|
||
and produces the frame's chain-pointer. */
|
||
|
||
#define FRAME_CHAIN(thisframe) \
|
||
(!inside_entry_file ((thisframe)->pc) ? \
|
||
read_memory_integer ((thisframe)->frame, 4) :\
|
||
0)
|
||
|
||
/* Define other aspects of the stack frame. */
|
||
|
||
/* A macro that tells us whether the function invocation represented
|
||
by FI does not have a frame on the stack associated with it. If it
|
||
does not, FRAMELESS is set to 1, else 0. */
|
||
#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
|
||
(FRAMELESS) = frameless_look_for_prologue(FI)
|
||
|
||
#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4))
|
||
|
||
#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
|
||
|
||
#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
|
||
|
||
/* Return number of args passed to a frame.
|
||
Can return -1, meaning no way to tell. */
|
||
|
||
#define FRAME_NUM_ARGS(numargs, fi) (numargs) = i386_frame_num_args(fi)
|
||
|
||
#ifdef __STDC__ /* Forward decl's for prototypes */
|
||
struct frame_info;
|
||
struct frame_saved_regs;
|
||
#endif
|
||
|
||
extern int
|
||
i386_frame_num_args PARAMS ((struct frame_info *));
|
||
|
||
/* Return number of bytes at start of arglist that are not really args. */
|
||
|
||
#define FRAME_ARGS_SKIP 8
|
||
|
||
/* Put here the code to store, into a struct frame_saved_regs,
|
||
the addresses of the saved registers of frame described by FRAME_INFO.
|
||
This includes special registers such as pc and fp saved in special
|
||
ways in the stack frame. sp is even more special:
|
||
the address we return for it IS the sp for the next frame. */
|
||
|
||
#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
|
||
{ i386_frame_find_saved_regs ((frame_info), &(frame_saved_regs)); }
|
||
|
||
extern void
|
||
i386_frame_find_saved_regs PARAMS ((struct frame_info *,
|
||
struct frame_saved_regs *));
|
||
|
||
|
||
/* Things needed for making the inferior call functions. */
|
||
|
||
/* Push an empty stack frame, to record the current PC, etc. */
|
||
|
||
#define PUSH_DUMMY_FRAME { i386_push_dummy_frame (); }
|
||
|
||
extern void
|
||
i386_push_dummy_frame PARAMS ((void));
|
||
|
||
/* Discard from the stack the innermost frame, restoring all registers. */
|
||
|
||
#define POP_FRAME { i386_pop_frame (); }
|
||
|
||
extern void
|
||
i386_pop_frame PARAMS ((void));
|
||
|
||
/* this is
|
||
* call 11223344 (32 bit relative)
|
||
* int3
|
||
*/
|
||
|
||
#define CALL_DUMMY { 0x223344e8, 0xcc11 }
|
||
|
||
#define CALL_DUMMY_LENGTH 8
|
||
|
||
#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */
|
||
|
||
/* Insert the specified number of args and function address
|
||
into a call sequence of the above form stored at DUMMYNAME. */
|
||
|
||
#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
|
||
{ \
|
||
int from, to, delta, loc; \
|
||
loc = (int)(read_register (SP_REGNUM) - CALL_DUMMY_LENGTH); \
|
||
from = loc + 5; \
|
||
to = (int)(fun); \
|
||
delta = to - from; \
|
||
*((char *)(dummyname) + 1) = (delta & 0xff); \
|
||
*((char *)(dummyname) + 2) = ((delta >> 8) & 0xff); \
|
||
*((char *)(dummyname) + 3) = ((delta >> 16) & 0xff); \
|
||
*((char *)(dummyname) + 4) = ((delta >> 24) & 0xff); \
|
||
}
|
||
|
||
extern void
|
||
print_387_control_word PARAMS ((unsigned int));
|
||
|
||
extern void
|
||
print_387_status_word PARAMS ((unsigned int));
|
||
|
||
/* Offset from SP to first arg on stack at first instruction of a function */
|
||
|
||
#define SP_ARG0 (1 * 4)
|
||
|
||
#endif /* !defined (TM_I386V_H) */
|