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- /* Definitions for Intel 386 running system V with gnu tools
- Copyright (C) 1988, 1993, 1994 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, 675 Mass Ave, Cambridge, MA 02139, 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 -Di386 -Asystem(unix) -Acpu(i386) -Amachine(i386)"
- #define CPP_SPEC "%{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
-
- #if 0 /* People say gas uses the log as the arg to .align. */
- /* When using gas, .align N aligns to an N-byte boundary. */
-
- #undef ASM_OUTPUT_ALIGN
- #define ASM_OUTPUT_ALIGN(FILE,LOG) \
- if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
- #endif
-
- /* Align labels, etc. at 4-byte boundaries.
- For the 486, align to 16-byte boundary for sake of cache. */
-
- #undef ASM_OUTPUT_ALIGN_CODE
- #define ASM_OUTPUT_ALIGN_CODE(FILE) \
- fprintf ((FILE), "\t.align %d,0x90\n", \
- TARGET_486 ? 4 : 2); /* Use log of 16 or log of 4 as arg. */
-
- /* Align start of loop at 4-byte boundary. */
-
- #undef ASM_OUTPUT_LOOP_ALIGN
- #define ASM_OUTPUT_LOOP_ALIGN(FILE) \
- fprintf ((FILE), "\t.align 2,0x90\n"); /* Use log of 4 as arg. */
-
- /* 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 AS3_SHIFT_DOUBLE
- #define AS3_SHIFT_DOUBLE(a,b,c,d) AS3 (a,b,c,d)
-
- /* 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 */
-