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Diffstat (limited to 'gcc/config/i386/freebsd.h')
| -rwxr-xr-x | gcc/config/i386/freebsd.h | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/gcc/config/i386/freebsd.h b/gcc/config/i386/freebsd.h new file mode 100755 index 0000000..df653ae --- /dev/null +++ b/gcc/config/i386/freebsd.h @@ -0,0 +1,268 @@ +/* Definitions of target machine for GNU compiler for Intel 80386 + running FreeBSD. + Copyright (C) 1988, 1992, 1994, 1996, 1997 Free Software Foundation, Inc. + Contributed by Poul-Henning Kamp <phk@login.dkuug.dk> + +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. */ + +/* This goes away when the math-emulator is fixed */ +#define TARGET_CPU_DEFAULT 0400 /* TARGET_NO_FANCY_MATH_387 */ + +/* This is tested by i386gas.h. */ +#define YES_UNDERSCORES + +/* Don't assume anything about the header files. */ +#define NO_IMPLICIT_EXTERN_C + +#include "i386/gstabs.h" + +/* Get perform_* macros to build libgcc.a. */ +#include "i386/perform.h" + +#undef CPP_PREDEFINES +#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__ -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)" + +/* Like the default, except no -lg. */ +#define LIB_SPEC "%{!shared:%{!pg:-lc}%{pg:-lc_p}}" + +#undef SIZE_TYPE +#define SIZE_TYPE "unsigned int" + +#undef PTRDIFF_TYPE +#define PTRDIFF_TYPE "int" + +#undef WCHAR_TYPE +#define WCHAR_TYPE "int" + +#define WCHAR_UNSIGNED 0 + +#undef WCHAR_TYPE_SIZE +#define WCHAR_TYPE_SIZE BITS_PER_WORD + +#define HAVE_ATEXIT + +/* Override the default comment-starter of "/". */ + +#undef ASM_COMMENT_START +#define ASM_COMMENT_START "#" + +#undef ASM_APP_ON +#define ASM_APP_ON "#APP\n" + +#undef ASM_APP_OFF +#define ASM_APP_OFF "#NO_APP\n" + +/* FreeBSD using a.out does not support DWARF2 unwinding mechanisms. */ +#define DWARF2_UNWIND_INFO 0 + +/* The following macros are stolen from i386v4.h */ +/* These have to be defined to get PIC code correct */ + +/* This is how to output an element of a case-vector that is relative. + This is only used for PIC code. See comments by the `casesi' insn in + i386.md for an explanation of the expression this outputs. */ + +#undef ASM_OUTPUT_ADDR_DIFF_ELT +#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ + fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE) + +/* Indicate that jump tables go in the text section. This is + necessary when compiling PIC code. */ + +#define JUMP_TABLES_IN_TEXT_SECTION 1 + +/* Don't default to pcc-struct-return, because gcc is the only compiler, and + we want to retain compatibility with older gcc versions. */ +#define DEFAULT_PCC_STRUCT_RETURN 0 + +/* i386 freebsd still uses old binutils that don't insert nops by default + when the .align directive demands to insert extra space in the text + segment. */ +#undef ASM_OUTPUT_ALIGN +#define ASM_OUTPUT_ALIGN(FILE,LOG) \ + if ((LOG)!=0) fprintf ((FILE), "\t.align %d,0x90\n", (LOG)) + +/* Profiling routines, partially copied from i386/osfrose.h. */ + +/* Redefine this to use %eax instead of %edx. */ +#undef FUNCTION_PROFILER +#define FUNCTION_PROFILER(FILE, LABELNO) \ +{ \ + if (flag_pic) \ + { \ + fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%eax\n", \ + LPREFIX, (LABELNO)); \ + fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n"); \ + } \ + else \ + { \ + fprintf (FILE, "\tmovl $%sP%d,%%eax\n", LPREFIX, (LABELNO)); \ + fprintf (FILE, "\tcall mcount\n"); \ + } \ +} + +/* + * Some imports from svr4.h in support of shared libraries. + * Currently, we need the DECLARE_OBJECT_SIZE stuff. + */ + +/* Define the strings used for the special svr4 .type and .size directives. + These strings generally do not vary from one system running svr4 to + another, but if a given system (e.g. m88k running svr) needs to use + different pseudo-op names for these, they may be overridden in the + file which includes this one. */ + +#define TYPE_ASM_OP ".type" +#define SIZE_ASM_OP ".size" + +/* The following macro defines the format used to output the second + operand of the .type assembler directive. Different svr4 assemblers + expect various different forms for this operand. The one given here + is just a default. You may need to override it in your machine- + specific tm.h file (depending upon the particulars of your assembler). */ + +#define TYPE_OPERAND_FMT "@%s" + +/* Write the extra assembler code needed to declare a function's result. + Most svr4 assemblers don't require any special declaration of the + result value, but there are exceptions. */ + +#ifndef ASM_DECLARE_RESULT +#define ASM_DECLARE_RESULT(FILE, RESULT) +#endif + +/* These macros generate the special .type and .size directives which + are used to set the corresponding fields of the linker symbol table + entries in an ELF object file under SVR4. These macros also output + the starting labels for the relevant functions/objects. */ + +/* Write the extra assembler code needed to declare a function properly. + Some svr4 assemblers need to also have something extra said about the + function's return value. We allow for that here. */ + +#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ + do { \ + fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ + assemble_name (FILE, NAME); \ + putc (',', FILE); \ + fprintf (FILE, TYPE_OPERAND_FMT, "function"); \ + putc ('\n', FILE); \ + ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ + ASM_OUTPUT_LABEL(FILE, NAME); \ + } while (0) + +/* Write the extra assembler code needed to declare an object properly. */ + +#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ + do { \ + fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ + assemble_name (FILE, NAME); \ + putc (',', FILE); \ + fprintf (FILE, TYPE_OPERAND_FMT, "object"); \ + putc ('\n', FILE); \ + size_directive_output = 0; \ + if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \ + { \ + size_directive_output = 1; \ + fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \ + } \ + ASM_OUTPUT_LABEL(FILE, NAME); \ + } while (0) + +/* Output the size directive for a decl in rest_of_decl_compilation + in the case where we did not do so before the initializer. + Once we find the error_mark_node, we know that the value of + size_directive_output was set + by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */ + +#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \ +do { \ + char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \ + if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \ + && ! AT_END && TOP_LEVEL \ + && DECL_INITIAL (DECL) == error_mark_node \ + && !size_directive_output) \ + { \ + fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ + assemble_name (FILE, name); \ + fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL)));\ + } \ + } while (0) + + +/* This is how to declare the size of a function. */ + +#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ + do { \ + if (!flag_inhibit_size_directive) \ + { \ + char label[256]; \ + static int labelno; \ + labelno++; \ + ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \ + ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \ + fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ + assemble_name (FILE, (FNAME)); \ + fprintf (FILE, ","); \ + assemble_name (FILE, label); \ + fprintf (FILE, "-"); \ + assemble_name (FILE, (FNAME)); \ + putc ('\n', FILE); \ + } \ + } while (0) + +#define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k}" +#define LINK_SPEC \ + "%{p:%e`-p' not supported; use `-pg' and gprof(1)} \ + %{shared:-Bshareable} \ + %{!shared:%{!nostdlib:%{!r:%{!e*:-e start}}} -dc -dp %{static:-Bstatic} \ + %{pg:-Bstatic} %{Z}} \ + %{assert*} %{R*}" + +#define STARTFILE_SPEC \ + "%{shared:c++rt0.o%s} \ + %{!shared:%{pg:gcrt0.o%s}%{!pg:%{static:scrt0.o%s}%{!static:crt0.o%s}}}" + +/* This is defined when gcc is compiled in the BSD-directory-tree, and must + * make up for the gap to all the stuff done in the GNU-makefiles. + */ + +#ifdef FREEBSD_NATIVE + +#define INCLUDE_DEFAULTS { \ + { "/usr/include", 0, 0, 0 }, \ + { "/usr/include/g++", "G++", 1, 1 }, \ + { 0, 0, 0, 0} \ + } + +#undef MD_EXEC_PREFIX +#define MD_EXEC_PREFIX "/usr/libexec/" + +#undef STANDARD_STARTFILE_PREFIX +#define STANDARD_STARTFILE_PREFIX "/usr/lib" + +#if 0 /* This is very wrong!!! */ +#define DEFAULT_TARGET_MACHINE "i386-unknown-freebsd_1.0" +#define GPLUSPLUS_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include" +#define TOOL_INCLUDE_DIR "/usr/local/i386-unknown-freebsd_1.0/include" +#define GCC_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include" +#endif + +#endif /* FREEBSD_NATIVE */ |