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/* Definitions for Intel 386 using GAS.
Copyright (C) 1988, 1993, 1994, 1996, 2002, 2004, 2007, 2008
Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 3, or (at your option)
any later version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* Note that i386/seq-gas.h is a GAS configuration that does not use this
file. */
/* Use the bsd assembler syntax. */
/* we need to do this because gas is really a bsd style assembler,
* and so doesn't work well this these att-isms:
*
* ASM_OUTPUT_SKIP is .set .,.+N, which isn't implemented in gas
* ASM_OUTPUT_LOCAL is done with .set .,.+N, but that can't be
* used to define bss static space
*
* Next is the question of whether to uses underscores. RMS didn't
* like this idea at first, but since it is now obvious that we
* need this separate tm file for use with gas, at least to get
* dbx debugging info, I think we should also switch to underscores.
* We can keep i386v for real att style output, and the few
* people who want both form will have to compile twice.
*/
/* these come from i386/bsd.h, but are specific to sequent */
#undef DBX_NO_XREFS
#undef DBX_CONTIN_LENGTH
/* Ask for COFF symbols. */
#define SDB_DEBUGGING_INFO 1
/* Output #ident as a .ident. */
#define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
/* In the past there was confusion as to what the argument to .align was
in GAS. For the last several years the rule has been this: for a.out
file formats that argument is LOG, and for all other file formats the
argument is 1<<LOG.
However, GAS now has .p2align and .balign pseudo-ops so to remove any
doubt or guess work, and since this file is used for both a.out and other
file formats, we use one of them. */
#ifdef HAVE_GAS_BALIGN_AND_P2ALIGN
#undef ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(FILE,LOG) \
if ((LOG)!=0) fprintf ((FILE), "\t.balign %d\n", 1<<(LOG))
#endif
/* A C statement to output to the stdio stream FILE an assembler
command to advance the location counter to a multiple of 1<<LOG
bytes if it is within MAX_SKIP bytes.
This is used to align code labels according to Intel recommendations. */
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
# define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
if ((LOG) != 0) {\
if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
}
#endif
/* A C statement or statements which output an assembler instruction
opcode to the stdio stream STREAM. The macro-operand PTR is a
variable of type `char *' which points to the opcode name in its
"internal" form--the form that is written in the machine description.
GAS version 1.38.1 doesn't understand the `repz' opcode mnemonic.
So use `repe' instead. */
#undef ASM_OUTPUT_OPCODE
#define ASM_OUTPUT_OPCODE(STREAM, PTR) \
{ \
if ((PTR)[0] == 'r' \
&& (PTR)[1] == 'e' \
&& (PTR)[2] == 'p') \
{ \
if ((PTR)[3] == 'z') \
{ \
fprintf (STREAM, "repe"); \
(PTR) += 4; \
} \
else if ((PTR)[3] == 'n' && (PTR)[4] == 'z') \
{ \
fprintf (STREAM, "repne"); \
(PTR) += 5; \
} \
} \
else \
ASM_OUTPUT_AVX_PREFIX ((STREAM), (PTR)); \
}
/* Define macro used to output shift-double opcodes when the shift
count is in %cl. Some assemblers require %cl as an argument;
some don't.
GAS requires the %cl argument, so override i386/unix.h. */
#undef SHIFT_DOUBLE_OMITS_COUNT
#define SHIFT_DOUBLE_OMITS_COUNT 0
/* Print opcodes the way that GAS expects them. */
#define GAS_MNEMONICS 1
/* The comment-starter string as GAS expects it. */
#undef ASM_COMMENT_START
#define ASM_COMMENT_START "#"
#define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
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