/* Definitions for Intel 386 using GAS. Copyright (C) 1988, 1993, 1994, 1996 Free Software Foundation, Inc. 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. */ /* Note that i386/seq-gas.h is a GAS configuration that does not use this file. */ #include "i386/i386.h" #ifndef YES_UNDERSCORES /* Define this now, because i386/bsd.h tests it. */ #define NO_UNDERSCORES #endif /* 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. */ #include "i386/bsd.h" /* 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 /* Specify predefined symbols in preprocessor. */ #define CPP_PREDEFINES "-Dunix" #define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE}" /* Allow #sccs in preprocessor. */ #define SCCS_DIRECTIVE /* Output #ident as a .ident. */ #define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME); /* Implicit library calls should use memcpy, not bcopy, etc. */ #define TARGET_MEM_FUNCTIONS /* 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. */ #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; \ } \ } \ } /* 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 #ifdef NO_UNDERSCORES /* If user-symbols don't have underscores, then it must take more than `L' to identify a label that should be ignored. */ /* This is how to store into the string BUF the symbol_ref name of an internal numbered label where PREFIX is the class of label and NUM is the number within the class. This is suitable for output with `assemble_name'. */ #undef ASM_GENERATE_INTERNAL_LABEL #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \ sprintf ((BUF), ".%s%d", (PREFIX), (NUMBER)) /* This is how to output an internal numbered label where PREFIX is the class of label and NUM is the number within the class. */ #undef ASM_OUTPUT_INTERNAL_LABEL #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ fprintf (FILE, ".%s%d:\n", PREFIX, NUM) #endif /* NO_UNDERSCORES */