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Diffstat (limited to 'contrib/gcc/config/i386/sysv4.h')
| -rw-r--r-- | contrib/gcc/config/i386/sysv4.h | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/contrib/gcc/config/i386/sysv4.h b/contrib/gcc/config/i386/sysv4.h deleted file mode 100644 index e688f7b8c9f7..000000000000 --- a/contrib/gcc/config/i386/sysv4.h +++ /dev/null @@ -1,253 +0,0 @@ -/* Target definitions for GNU compiler for Intel 80386 running System V.4 - Copyright (C) 1991 Free Software Foundation, Inc. - - Written by Ron Guilmette (rfg@netcom.com). - -This file is part of GNU CC. - -GNU CC 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, or (at your option) -any later version. - -GNU CC 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 GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#include "i386/i386.h" /* Base i386 target machine definitions */ -#include "i386/att.h" /* Use the i386 AT&T assembler syntax */ -#include "svr4.h" /* Definitions common to all SVR4 targets */ - -#undef TARGET_VERSION -#define TARGET_VERSION fprintf (stderr, " (i386 System V Release 4)"); - -/* The svr4 ABI for the i386 says that records and unions are returned - in memory. */ - -#undef RETURN_IN_MEMORY -#define RETURN_IN_MEMORY(TYPE) \ - (TYPE_MODE (TYPE) == BLKmode) - -/* Define which macros to predefine. __svr4__ is our extension. */ -/* This used to define X86, but james@bigtex.cactus.org says that - is supposed to be defined optionally by user programs--not by default. */ -#define CPP_PREDEFINES \ - "-Di386 -Dunix -D__svr4__ -Asystem(unix) -Asystem(svr4) -Acpu(i386) -Amachine(i386)" - -/* This is how to output assembly code to define a `float' constant. - We always have to use a .long pseudo-op to do this because the native - SVR4 ELF assembler is buggy and it generates incorrect values when we - try to use the .float pseudo-op instead. */ - -#undef ASM_OUTPUT_FLOAT -#define ASM_OUTPUT_FLOAT(FILE,VALUE) \ -do { long value; \ - REAL_VALUE_TO_TARGET_SINGLE ((VALUE), value); \ - if (sizeof (int) == sizeof (long)) \ - fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value); \ - else \ - fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value); \ - } while (0) - -/* This is how to output assembly code to define a `double' constant. - We always have to use a pair of .long pseudo-ops to do this because - the native SVR4 ELF assembler is buggy and it generates incorrect - values when we try to use the .double pseudo-op instead. */ - -#undef ASM_OUTPUT_DOUBLE -#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ -do { long value[2]; \ - REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), value); \ - if (sizeof (int) == sizeof (long)) \ - { \ - fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[0]); \ - fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[1]); \ - } \ - else \ - { \ - fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[0]); \ - fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[1]); \ - } \ - } while (0) - - -#undef ASM_OUTPUT_LONG_DOUBLE -#define ASM_OUTPUT_LONG_DOUBLE(FILE,VALUE) \ -do { long value[3]; \ - REAL_VALUE_TO_TARGET_LONG_DOUBLE ((VALUE), value); \ - if (sizeof (int) == sizeof (long)) \ - { \ - fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[0]); \ - fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[1]); \ - fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[2]); \ - } \ - else \ - { \ - fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[0]); \ - fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[1]); \ - fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[2]); \ - } \ - } while (0) - -/* Output at beginning of assembler file. */ -/* The .file command should always begin the output. */ - -#undef ASM_FILE_START -#define ASM_FILE_START(FILE) \ - do { \ - output_file_directive (FILE, main_input_filename); \ - fprintf (FILE, "\t.version\t\"01.01\"\n"); \ - } while (0) - -/* Define the register numbers to be used in Dwarf debugging information. - The SVR4 reference port C compiler uses the following register numbers - in its Dwarf output code: - - 0 for %eax (gnu regno = 0) - 1 for %ecx (gnu regno = 2) - 2 for %edx (gnu regno = 1) - 3 for %ebx (gnu regno = 3) - 4 for %esp (gnu regno = 7) - 5 for %ebp (gnu regno = 6) - 6 for %esi (gnu regno = 4) - 7 for %edi (gnu regno = 5) - - The following three DWARF register numbers are never generated by - the SVR4 C compiler or by the GNU compilers, but SDB on x86/svr4 - believes these numbers have these meanings. - - 8 for %eip (no gnu equivalent) - 9 for %eflags (no gnu equivalent) - 10 for %trapno (no gnu equivalent) - - It is not at all clear how we should number the FP stack registers - for the x86 architecture. If the version of SDB on x86/svr4 were - a bit less brain dead with respect to floating-point then we would - have a precedent to follow with respect to DWARF register numbers - for x86 FP registers, but the SDB on x86/svr4 is so completely - broken with respect to FP registers that it is hardly worth thinking - of it as something to strive for compatibility with. - - The version of x86/svr4 SDB I have at the moment does (partially) - seem to believe that DWARF register number 11 is associated with - the x86 register %st(0), but that's about all. Higher DWARF - register numbers don't seem to be associated with anything in - particular, and even for DWARF regno 11, SDB only seems to under- - stand that it should say that a variable lives in %st(0) (when - asked via an `=' command) if we said it was in DWARF regno 11, - but SDB still prints garbage when asked for the value of the - variable in question (via a `/' command). - - (Also note that the labels SDB prints for various FP stack regs - when doing an `x' command are all wrong.) - - Note that these problems generally don't affect the native SVR4 - C compiler because it doesn't allow the use of -O with -g and - because when it is *not* optimizing, it allocates a memory - location for each floating-point variable, and the memory - location is what gets described in the DWARF AT_location - attribute for the variable in question. - - Regardless of the severe mental illness of the x86/svr4 SDB, we - do something sensible here and we use the following DWARF - register numbers. Note that these are all stack-top-relative - numbers. - - 11 for %st(0) (gnu regno = 8) - 12 for %st(1) (gnu regno = 9) - 13 for %st(2) (gnu regno = 10) - 14 for %st(3) (gnu regno = 11) - 15 for %st(4) (gnu regno = 12) - 16 for %st(5) (gnu regno = 13) - 17 for %st(6) (gnu regno = 14) - 18 for %st(7) (gnu regno = 15) -*/ - -#undef DBX_REGISTER_NUMBER -#define DBX_REGISTER_NUMBER(n) \ -((n) == 0 ? 0 \ - : (n) == 1 ? 2 \ - : (n) == 2 ? 1 \ - : (n) == 3 ? 3 \ - : (n) == 4 ? 6 \ - : (n) == 5 ? 7 \ - : (n) == 6 ? 5 \ - : (n) == 7 ? 4 \ - : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n)+3 \ - : (-1)) - -/* The routine used to output sequences of byte values. We use a special - version of this for most svr4 targets because doing so makes the - generated assembly code more compact (and thus faster to assemble) - as well as more readable. Note that if we find subparts of the - character sequence which end with NUL (and which are shorter than - STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */ - -#undef ASM_OUTPUT_ASCII -#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ - do \ - { \ - register unsigned char *_ascii_bytes = (unsigned char *) (STR); \ - register unsigned char *limit = _ascii_bytes + (LENGTH); \ - register unsigned bytes_in_chunk = 0; \ - for (; _ascii_bytes < limit; _ascii_bytes++) \ - { \ - register unsigned char *p; \ - if (bytes_in_chunk >= 64) \ - { \ - fputc ('\n', (FILE)); \ - bytes_in_chunk = 0; \ - } \ - for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \ - continue; \ - if (p < limit && (p - _ascii_bytes) <= STRING_LIMIT) \ - { \ - if (bytes_in_chunk > 0) \ - { \ - fputc ('\n', (FILE)); \ - bytes_in_chunk = 0; \ - } \ - ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \ - _ascii_bytes = p; \ - } \ - else \ - { \ - if (bytes_in_chunk == 0) \ - fprintf ((FILE), "\t.byte\t"); \ - else \ - fputc (',', (FILE)); \ - fprintf ((FILE), "0x%02x", *_ascii_bytes); \ - bytes_in_chunk += 5; \ - } \ - } \ - if (bytes_in_chunk > 0) \ - fprintf ((FILE), "\n"); \ - } \ - while (0) - -/* This is how to output an element of a case-vector that is relative. - This is only used for PIC code. See comments by the `casesi' insn in - i386.md for an explanation of the expression this outputs. */ - -#undef ASM_OUTPUT_ADDR_DIFF_ELT -#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ - fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE) - -/* Indicate that jump tables go in the text section. This is - necessary when compiling PIC code. */ - -#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic) - -/* A C statement (sans semicolon) to output to the stdio stream - FILE the assembler definition of uninitialized global DECL named - NAME whose size is SIZE bytes and alignment is ALIGN bytes. - Try to use asm_output_aligned_bss to implement this macro. */ - -#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ - asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) |