freebsd.h revision 18337
1/* Definitions of target machine for GNU compiler for Intel 80386 2 running FreeBSD. 3 Copyright (C) 1988, 1992, 1994 Free Software Foundation, Inc. 4 Contributed by Poul-Henning Kamp <phk@login.dkuug.dk> 5 6This file is part of GNU CC. 7 8GNU CC is free software; you can redistribute it and/or modify 9it under the terms of the GNU General Public License as published by 10the Free Software Foundation; either version 2, or (at your option) 11any later version. 12 13GNU CC is distributed in the hope that it will be useful, 14but WITHOUT ANY WARRANTY; without even the implied warranty of 15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16GNU General Public License for more details. 17 18You should have received a copy of the GNU General Public License 19along with GNU CC; see the file COPYING. If not, write to 20the Free Software Foundation, 59 Temple Place - Suite 330, 21Boston, MA 02111-1307, USA. */ 22 23/* This goes away when the math-emulator is fixed */ 24#define TARGET_CPU_DEFAULT 0400 /* TARGET_NO_FANCY_MATH_387 */ 25 26/* This is tested by i386gas.h. */ 27#define YES_UNDERSCORES 28 29/* Don't assume anything about the header files. */ 30#define NO_IMPLICIT_EXTERN_C 31 32#include "i386/gstabs.h" 33 34/* Get perform_* macros to build libgcc.a. */ 35#include "i386/perform.h" 36 37#undef CPP_PREDEFINES 38#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__ -D__386BSD__ -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)" 39 40/* Like the default, except no -lg. */ 41#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}" 42 43#undef SIZE_TYPE 44#define SIZE_TYPE "unsigned int" 45 46#undef PTRDIFF_TYPE 47#define PTRDIFF_TYPE "int" 48 49#undef WCHAR_TYPE 50#define WCHAR_TYPE "short unsigned int" 51 52#define WCHAR_UNSIGNED 1 53 54#undef WCHAR_TYPE_SIZE 55#define WCHAR_TYPE_SIZE 16 56 57#define HAVE_ATEXIT 58 59/* There are conflicting reports about whether this system uses 60 a different assembler syntax. wilson@cygnus.com says # is right. */ 61#undef COMMENT_BEGIN 62#define COMMENT_BEGIN "#" 63 64#undef ASM_APP_ON 65#define ASM_APP_ON "#APP\n" 66 67#undef ASM_APP_OFF 68#define ASM_APP_OFF "#NO_APP\n" 69 70/* The following macros are stolen from i386v4.h */ 71/* These have to be defined to get PIC code correct */ 72 73/* This is how to output an element of a case-vector that is relative. 74 This is only used for PIC code. See comments by the `casesi' insn in 75 i386.md for an explanation of the expression this outputs. */ 76 77#undef ASM_OUTPUT_ADDR_DIFF_ELT 78#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \ 79 fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE) 80 81/* Indicate that jump tables go in the text section. This is 82 necessary when compiling PIC code. */ 83 84#define JUMP_TABLES_IN_TEXT_SECTION 85 86/* Don't default to pcc-struct-return, because gcc is the only compiler, and 87 we want to retain compatibility with older gcc versions. */ 88#define DEFAULT_PCC_STRUCT_RETURN 0 89 90/* Profiling routines, partially copied from i386/osfrose.h. */ 91 92/* Redefine this to use %eax instead of %edx. */ 93#undef FUNCTION_PROFILER 94#define FUNCTION_PROFILER(FILE, LABELNO) \ 95{ \ 96 if (flag_pic) \ 97 { \ 98 fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%eax\n", \ 99 LPREFIX, (LABELNO)); \ 100 fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n"); \ 101 } \ 102 else \ 103 { \ 104 fprintf (FILE, "\tmovl $%sP%d,%%eax\n", LPREFIX, (LABELNO)); \ 105 fprintf (FILE, "\tcall mcount\n"); \ 106 } \ 107} 108 109/* 110 * Some imports from svr4.h in support of shared libraries. 111 * Currently, we need the DECLARE_OBJECT_SIZE stuff. 112 */ 113 114/* Define the strings used for the special svr4 .type and .size directives. 115 These strings generally do not vary from one system running svr4 to 116 another, but if a given system (e.g. m88k running svr) needs to use 117 different pseudo-op names for these, they may be overridden in the 118 file which includes this one. */ 119 120#define TYPE_ASM_OP ".type" 121#define SIZE_ASM_OP ".size" 122 123/* The following macro defines the format used to output the second 124 operand of the .type assembler directive. Different svr4 assemblers 125 expect various different forms for this operand. The one given here 126 is just a default. You may need to override it in your machine- 127 specific tm.h file (depending upon the particulars of your assembler). */ 128 129#define TYPE_OPERAND_FMT "@%s" 130 131/* Write the extra assembler code needed to declare a function's result. 132 Most svr4 assemblers don't require any special declaration of the 133 result value, but there are exceptions. */ 134 135#ifndef ASM_DECLARE_RESULT 136#define ASM_DECLARE_RESULT(FILE, RESULT) 137#endif 138 139/* These macros generate the special .type and .size directives which 140 are used to set the corresponding fields of the linker symbol table 141 entries in an ELF object file under SVR4. These macros also output 142 the starting labels for the relevant functions/objects. */ 143 144/* Write the extra assembler code needed to declare a function properly. 145 Some svr4 assemblers need to also have something extra said about the 146 function's return value. We allow for that here. */ 147 148#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ 149 do { \ 150 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ 151 assemble_name (FILE, NAME); \ 152 putc (',', FILE); \ 153 fprintf (FILE, TYPE_OPERAND_FMT, "function"); \ 154 putc ('\n', FILE); \ 155 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ 156 ASM_OUTPUT_LABEL(FILE, NAME); \ 157 } while (0) 158 159/* Write the extra assembler code needed to declare an object properly. */ 160 161#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ 162 do { \ 163 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ 164 assemble_name (FILE, NAME); \ 165 putc (',', FILE); \ 166 fprintf (FILE, TYPE_OPERAND_FMT, "object"); \ 167 putc ('\n', FILE); \ 168 size_directive_output = 0; \ 169 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \ 170 { \ 171 size_directive_output = 1; \ 172 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ 173 assemble_name (FILE, NAME); \ 174 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \ 175 } \ 176 ASM_OUTPUT_LABEL(FILE, NAME); \ 177 } while (0) 178 179/* Output the size directive for a decl in rest_of_decl_compilation 180 in the case where we did not do so before the initializer. 181 Once we find the error_mark_node, we know that the value of 182 size_directive_output was set 183 by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */ 184 185#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \ 186do { \ 187 char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \ 188 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \ 189 && ! AT_END && TOP_LEVEL \ 190 && DECL_INITIAL (DECL) == error_mark_node \ 191 && !size_directive_output) \ 192 { \ 193 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ 194 assemble_name (FILE, name); \ 195 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL)));\ 196 } \ 197 } while (0) 198 199 200/* This is how to declare the size of a function. */ 201 202#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ 203 do { \ 204 if (!flag_inhibit_size_directive) \ 205 { \ 206 char label[256]; \ 207 static int labelno; \ 208 labelno++; \ 209 ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \ 210 ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \ 211 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ 212 assemble_name (FILE, (FNAME)); \ 213 fprintf (FILE, ","); \ 214 assemble_name (FILE, label); \ 215 fprintf (FILE, "-"); \ 216 assemble_name (FILE, (FNAME)); \ 217 putc ('\n', FILE); \ 218 } \ 219 } while (0) 220 221#define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k}" 222#define LINK_SPEC \ 223 "%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{static:-Bstatic} %{assert*}" 224 225/* This is defined when gcc is compiled in the BSD-directory-tree, and must 226 * make up for the gap to all the stuff done in the GNU-makefiles. 227 */ 228 229#ifdef FREEBSD_NATIVE 230 231#define INCLUDE_DEFAULTS { \ 232 { "/usr/include", 0 }, \ 233 { "/usr/include/g++", 1 }, \ 234 { 0, 0} \ 235 } 236 237#undef MD_EXEC_PREFIX 238#define MD_EXEC_PREFIX "/usr/libexec/" 239 240#undef STANDARD_STARTFILE_PREFIX 241#define STANDARD_STARTFILE_PREFIX "/usr/lib" 242 243#if 0 /* This is very wrong!!! */ 244#define DEFAULT_TARGET_MACHINE "i386-unknown-freebsd_1.0" 245#define GPLUSPLUS_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include" 246#define TOOL_INCLUDE_DIR "/usr/local/i386-unknown-freebsd_1.0/include" 247#define GCC_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include" 248#endif 249 250#endif /* FREEBSD_NATIVE */ 251