/* 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.h" /* Use the BSD assembler syntax. */ #include "bsd386.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" /* Pass -Z and -ZO options to the linker. */ #define LINK_SPEC "%{Z*}" /* 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) /* 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 \ : (REGNO) >= 8 ? (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)