273 lines
9.4 KiB
C
273 lines
9.4 KiB
C
/* Definitions of target machine for GNU compiler for Intel 80386
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running FreeBSD.
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Copyright (C) 1988, 1992, 1994, 1996, 1997 Free Software Foundation, Inc.
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Contributed by Poul-Henning Kamp <phk@login.dkuug.dk>
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This goes away when the math-emulator is fixed */
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#define TARGET_CPU_DEFAULT 0400 /* TARGET_NO_FANCY_MATH_387 */
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/* This is tested by i386gas.h. */
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#define YES_UNDERSCORES
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/* Don't assume anything about the header files. */
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#define NO_IMPLICIT_EXTERN_C
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#include "i386/gstabs.h"
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/* Get perform_* macros to build libgcc.a. */
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#include "i386/perform.h"
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__ -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
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/* Like the default, except no -lg. */
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#define LIB_SPEC "%{!shared:%{!pg:-lc}%{pg:-lc_p}}"
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#undef SIZE_TYPE
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#define SIZE_TYPE "unsigned int"
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "int"
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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#define WCHAR_UNSIGNED 0
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE BITS_PER_WORD
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#define HAVE_ATEXIT
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/* Override the default comment-starter of "/". */
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#undef ASM_COMMENT_START
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#define ASM_COMMENT_START "#"
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#undef ASM_APP_ON
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#define ASM_APP_ON "#APP\n"
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#undef ASM_APP_OFF
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#define ASM_APP_OFF "#NO_APP\n"
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/* FreeBSD using a.out does not support DWARF2 unwinding mechanisms. */
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#define DWARF2_UNWIND_INFO 0
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/* The following macros are stolen from i386v4.h */
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/* These have to be defined to get PIC code correct */
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/* This is how to output an element of a case-vector that is relative.
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This is only used for PIC code. See comments by the `casesi' insn in
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i386.md for an explanation of the expression this outputs. */
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#undef ASM_OUTPUT_ADDR_DIFF_ELT
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#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
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fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
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/* Indicate that jump tables go in the text section. This is
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necessary when compiling PIC code. */
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#define JUMP_TABLES_IN_TEXT_SECTION 1
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/* Don't default to pcc-struct-return, because gcc is the only compiler, and
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we want to retain compatibility with older gcc versions. */
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#define DEFAULT_PCC_STRUCT_RETURN 0
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/* Ensure we the configuration knows our system correctly so we can link with
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libraries compiled with the native cc. */
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#undef NO_DOLLAR_IN_LABEL
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/* i386 freebsd still uses old binutils that don't insert nops by default
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when the .align directive demands to insert extra space in the text
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segment. */
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#undef ASM_OUTPUT_ALIGN
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#define ASM_OUTPUT_ALIGN(FILE,LOG) \
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if ((LOG)!=0) fprintf ((FILE), "\t.align %d,0x90\n", (LOG))
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/* Profiling routines, partially copied from i386/osfrose.h. */
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/* Redefine this to use %eax instead of %edx. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE, LABELNO) \
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{ \
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if (flag_pic) \
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{ \
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fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%eax\n", \
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LPREFIX, (LABELNO)); \
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fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n"); \
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} \
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else \
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{ \
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fprintf (FILE, "\tmovl $%sP%d,%%eax\n", LPREFIX, (LABELNO)); \
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fprintf (FILE, "\tcall mcount\n"); \
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} \
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}
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/*
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* Some imports from svr4.h in support of shared libraries.
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* Currently, we need the DECLARE_OBJECT_SIZE stuff.
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*/
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/* Define the strings used for the special svr4 .type and .size directives.
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These strings generally do not vary from one system running svr4 to
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another, but if a given system (e.g. m88k running svr) needs to use
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different pseudo-op names for these, they may be overridden in the
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file which includes this one. */
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#define TYPE_ASM_OP ".type"
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#define SIZE_ASM_OP ".size"
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/* The following macro defines the format used to output the second
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operand of the .type assembler directive. Different svr4 assemblers
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expect various different forms for this operand. The one given here
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is just a default. You may need to override it in your machine-
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specific tm.h file (depending upon the particulars of your assembler). */
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#define TYPE_OPERAND_FMT "@%s"
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/* Write the extra assembler code needed to declare a function's result.
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Most svr4 assemblers don't require any special declaration of the
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result value, but there are exceptions. */
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#ifndef ASM_DECLARE_RESULT
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#define ASM_DECLARE_RESULT(FILE, RESULT)
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#endif
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/* These macros generate the special .type and .size directives which
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are used to set the corresponding fields of the linker symbol table
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entries in an ELF object file under SVR4. These macros also output
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the starting labels for the relevant functions/objects. */
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/* Write the extra assembler code needed to declare a function properly.
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Some svr4 assemblers need to also have something extra said about the
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function's return value. We allow for that here. */
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#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
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do { \
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fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
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assemble_name (FILE, NAME); \
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putc (',', FILE); \
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fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
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putc ('\n', FILE); \
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ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
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ASM_OUTPUT_LABEL(FILE, NAME); \
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} while (0)
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/* Write the extra assembler code needed to declare an object properly. */
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#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
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do { \
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fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
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assemble_name (FILE, NAME); \
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putc (',', FILE); \
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fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
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putc ('\n', FILE); \
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size_directive_output = 0; \
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if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
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{ \
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size_directive_output = 1; \
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fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
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} \
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ASM_OUTPUT_LABEL(FILE, NAME); \
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} while (0)
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/* Output the size directive for a decl in rest_of_decl_compilation
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in the case where we did not do so before the initializer.
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Once we find the error_mark_node, we know that the value of
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size_directive_output was set
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by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
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#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
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do { \
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char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
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if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
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&& ! AT_END && TOP_LEVEL \
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&& DECL_INITIAL (DECL) == error_mark_node \
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&& !size_directive_output) \
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{ \
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fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
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assemble_name (FILE, name); \
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fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL)));\
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} \
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} while (0)
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/* This is how to declare the size of a function. */
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#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
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do { \
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if (!flag_inhibit_size_directive) \
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{ \
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char label[256]; \
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static int labelno; \
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labelno++; \
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ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
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ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
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fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
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assemble_name (FILE, (FNAME)); \
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fprintf (FILE, ","); \
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assemble_name (FILE, label); \
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fprintf (FILE, "-"); \
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assemble_name (FILE, (FNAME)); \
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putc ('\n', FILE); \
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} \
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} while (0)
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#define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k}"
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#define LINK_SPEC \
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"%{p:%e`-p' not supported; use `-pg' and gprof(1)} \
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%{shared:-Bshareable} \
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%{!shared:%{!nostdlib:%{!r:%{!e*:-e start}}} -dc -dp %{static:-Bstatic} \
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%{pg:-Bstatic} %{Z}} \
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%{assert*} %{R*}"
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#define STARTFILE_SPEC \
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"%{shared:c++rt0.o%s} \
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%{!shared:%{pg:gcrt0.o%s}%{!pg:%{static:scrt0.o%s}%{!static:crt0.o%s}}}"
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/* This is defined when gcc is compiled in the BSD-directory-tree, and must
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* make up for the gap to all the stuff done in the GNU-makefiles.
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*/
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#ifdef FREEBSD_NATIVE
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#define INCLUDE_DEFAULTS { \
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{ "/usr/include", 0, 0, 0 }, \
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{ "/usr/include/g++", "G++", 1, 1 }, \
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{ 0, 0, 0, 0} \
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}
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#undef MD_EXEC_PREFIX
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#define MD_EXEC_PREFIX "/usr/libexec/"
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#undef STANDARD_STARTFILE_PREFIX
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#define STANDARD_STARTFILE_PREFIX "/usr/lib"
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#if 0 /* This is very wrong!!! */
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#define DEFAULT_TARGET_MACHINE "i386-unknown-freebsd_1.0"
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#define GPLUSPLUS_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include"
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#define TOOL_INCLUDE_DIR "/usr/local/i386-unknown-freebsd_1.0/include"
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#define GCC_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include"
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#endif
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#endif /* FREEBSD_NATIVE */
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