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Diffstat (limited to 'gcc-4.9/gcc/config/i386/gas.h')
| -rw-r--r-- | gcc-4.9/gcc/config/i386/gas.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/i386/gas.h b/gcc-4.9/gcc/config/i386/gas.h new file mode 100644 index 000000000..edefc9aad --- /dev/null +++ b/gcc-4.9/gcc/config/i386/gas.h @@ -0,0 +1,124 @@ +/* Definitions for Intel 386 using GAS. + Copyright (C) 1988-2014 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. */ + +#undef TARGET_ASM_OUTPUT_IDENT +#define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive + +/* 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') \ + { \ + fputs ("repe", (STREAM)); \ + (PTR) += 4; \ + } \ + else if ((PTR)[3] == 'n' && (PTR)[4] == 'z') \ + { \ + fputs ("repne", (STREAM)); \ + (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 + +/* The comment-starter string as GAS expects it. */ +#undef ASM_COMMENT_START +#define ASM_COMMENT_START "#" + +#define TARGET_ASM_FILE_START_FILE_DIRECTIVE true |