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/* Definitions for Sequent Intel 386.
Copyright (C) 1988, 1994, 1999 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. */
#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. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_80387 | MASK_FLOAT_RETURNS)
/* 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)
/* The native compiler passes the address of the returned structure in eax. */
#undef STRUCT_VALUE
#undef STRUCT_VALUE_INCOMING
#define STRUCT_VALUE_REGNUM 0
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