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- /* Definitions for Sequent Intel 386.
- Copyright (C) 1988 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. */
-
- #include "i386/i386.h"
-
- /* Use the BSD assembler syntax. */
-
- #include "i386/bsd.h"
-
- /* By default, don't use IEEE compatible arithmetic comparisons
- because the assembler can't handle the fucom insn.
- Return float values in the 387.
- (TARGET_80387 | TARGET_FLOAT_RETURNS_IN_80387) */
-
- #undef TARGET_DEFAULT
- #define TARGET_DEFAULT 0201
-
- /* Specify predefined symbols in preprocessor. */
-
- #define CPP_PREDEFINES "-Dunix -Di386 -Dsequent -Asystem(unix) -Acpu(i386) -Amachine(i386)"
-
- /* Pass -Z and -ZO options to the linker. */
-
- #define LINK_SPEC "%{Z*}"
-
- #if 0 /* Dynix 3.1 is said to accept -L. */
- /* Dynix V3.0.12 doesn't accept -L at all. */
-
- #define LINK_LIBGCC_SPECIAL
- #endif
-
- /* Link with libg.a when debugging, for dbx's sake. */
-
- #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} "
-
- /* We don't want to output SDB debugging information. */
-
- #undef SDB_DEBUGGING_INFO
-
- /* We want to output DBX debugging information. */
-
- #define DBX_DEBUGGING_INFO
-
- /* Sequent Symmetry has size_t defined as int in /usr/include/sys/types.h */
- #define SIZE_TYPE "int"
-
- /* gcc order is ax, dx, cx, bx, si, di, bp, sp, st, st.
- * dbx order is ax, dx, cx, st(0), st(1), bx, si, di, st(2), st(3),
- * st(4), st(5), st(6), st(7), sp, bp */
-
- /* ??? The right thing would be to change the ordering of the
- registers to correspond to the conventions of this system,
- and get rid of DBX_REGISTER_NUMBER. */
-
- #undef DBX_REGISTER_NUMBER
- #define DBX_REGISTER_NUMBER(n) \
- ((n) < 3 ? (n) : (n) < 6 ? (n) + 2 \
- : (n) == 6 ? 15 : (n) == 7 ? 14 : 3)
-
- /* malcolmp@hydra.maths.unsw.EDU.AU says these two definitions
- fix trouble in dbx. */
- #undef DBX_OUTPUT_LBRAC
- #define DBX_OUTPUT_LBRAC(file,name) \
- fprintf (asmfile, "%s %d,0,%d,", ASM_STABN_OP, N_LBRAC, depth); \
- assemble_name (asmfile, buf); \
- fprintf (asmfile, "\n");
-
- #undef DBX_OUTPUT_RBRAC
- #define DBX_OUTPUT_RBRAC(file,name) \
- fprintf (asmfile, "%s %d,0,%d,", ASM_STABN_OP, N_RBRAC, depth); \
- assemble_name (asmfile, buf); \
- fprintf (asmfile, "\n");
-
- /* Prevent anything from being allocated in the register pair cx/bx,
- since that would confuse GDB. */
-
- #undef HARD_REGNO_MODE_OK
- #define HARD_REGNO_MODE_OK(REGNO, MODE) \
- (((REGNO) < 2 ? 1 \
- : (REGNO) < 4 ? 1 \
- : FP_REGNO_P (REGNO) ? (GET_MODE_CLASS (MODE) == MODE_FLOAT \
- || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
- : (MODE) != QImode) \
- && ! (REGNO == 2 && GET_MODE_UNIT_SIZE (MODE) > 4))
-
- /* Output assembler code to FILE to increment profiler label # LABELNO
- for profiling a function entry. */
-
- #undef FUNCTION_PROFILER
- #define FUNCTION_PROFILER(FILE, LABELNO) \
- fprintf (FILE, "\tmovl $.LP%d,%%eax\n\tcall mcount\n", (LABELNO));
-
- /* Assembler pseudo-op for shared data segment. */
- #define SHARED_SECTION_ASM_OP ".shdata"
-
- /* 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.
-
- The Sequent assembler (identified as "Balance 8000 Assembler
- 07/17/85 3.90" by "as -v") does not understand the `movs[bwl]' string
- move mnemonics - it uses `smov[bwl]' instead. Change "movs" into
- "smov", carefully avoiding the sign-extend opcodes. */
-
- #define ASM_OUTPUT_OPCODE(STREAM, PTR) \
- { \
- if ((PTR)[0] == 'm' \
- && (PTR)[1] == 'o' \
- && (PTR)[2] == 'v' \
- && (PTR)[3] == 's' \
- && ((PTR)[4] == 'b' || (PTR)[4] == 'w' || (PTR)[4] == 'l') \
- && ((PTR)[5] == ' ' || (PTR)[5] == '\t'|| (PTR)[5] == '\0')) \
- { \
- fprintf (STREAM, "smov"); \
- (PTR) += 4; \
- } \
- }
-
- /* 10-Aug-92 pes Local labels are prefixed with ".L" */
- #undef LPREFIX
- #define LPREFIX ".L"
-
- #undef ASM_GENERATE_INTERNAL_LABEL
- #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER)\
- sprintf ((BUF), "*.%s%d", (PREFIX), (NUMBER))
-
- #undef ASM_OUTPUT_INTERNAL_LABEL
- #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)\
- fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
-