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gcc.gnu.org Git - gcc.git/blob - gcc/config/i386/freebsd.h
1 /* Definitions for Intel 386 running FreeBSD with ELF format
2 Copyright (C) 1996, 2000 Free Software Foundation, Inc.
3 Contributed by Eric Youngdale.
4 Modified for stabs-in-ELF by H.J. Lu.
5 Adapted from GNU/Linux version by John Polstra.
6 Continued development by David O'Brien <obrien@freebsd.org>
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
26 #define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)");
28 /* Override the default comment-starter of "/". */
29 #undef ASM_COMMENT_START
30 #define ASM_COMMENT_START "#"
33 #define ASM_APP_ON "#APP\n"
36 #define ASM_APP_OFF "#NO_APP\n"
39 #define SET_ASM_OP "\t.set\t"
41 /* This is how to output an element of a case-vector that is relative.
42 This is only used for PIC code. See comments by the `casesi' insn in
43 i386.md for an explanation of the expression this outputs. */
44 #undef ASM_OUTPUT_ADDR_DIFF_ELT
45 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
46 fprintf ((FILE), "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
48 /* Indicate that jump tables go in the text section. This is
49 necessary when compiling PIC code. */
50 #define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)
52 #undef DBX_REGISTER_NUMBER
53 #define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n]
55 #undef NO_PROFILE_COUNTERS
56 #define NO_PROFILE_COUNTERS
58 /* Tell final.c that we don't need a label passed to mcount. */
60 #undef FUNCTION_PROFILER
61 #define FUNCTION_PROFILER(FILE, LABELNO) \
64 fprintf ((FILE), "\tcall *.mcount@GOT(%%ebx)\n"); \
66 fprintf ((FILE), "\tcall .mcount\n"); \
69 /* Make gcc agree with <machine/ansi.h>. */
72 #define SIZE_TYPE "unsigned int"
75 #define PTRDIFF_TYPE "int"
77 #undef WCHAR_TYPE_SIZE
78 #define WCHAR_TYPE_SIZE BITS_PER_WORD
81 #define CPP_PREDEFINES "-Dunix -D__ELF__ -D__FreeBSD__\
82 -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
84 /* Provide a STARTFILE_SPEC appropriate for FreeBSD. Here we add
85 the magical crtbegin.o file (see crtstuff.c) which provides part
86 of the support for getting C++ file-scope static object constructed
87 before entering `main'. */
90 #define STARTFILE_SPEC \
92 %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
93 %{!p:%{profile:gcrt1.o%s} \
94 %{!profile:crt1.o%s}}}} \
95 crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
97 /* Provide a ENDFILE_SPEC appropriate for FreeBSD. Here we tack on
98 the magical crtend.o file (see crtstuff.c) which provides part of
99 the support for getting C++ file-scope static object constructed
100 before entering `main', followed by a normal "finalizer" file,
104 #define ENDFILE_SPEC \
105 "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
107 /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support
108 for the special GCC options -static and -shared, which allow us to
109 link things in one of these three modes by applying the appropriate
110 combinations of options at link-time. We like to support here for
111 as many of the other GNU linker options as possible. But I don't
112 have the time to search for those flags. I am sure how to add
113 support for -soname shared_object_name. H.J.
115 I took out %{v:%{!V:-V}}. It is too much :-(. They can use
118 When the -shared link option is used a final link is not being
122 #define LINK_SPEC "-m elf_i386 \
125 %{assert*} %{R*} %{rpath*} %{defsym*} \
126 %{shared:-Bshareable %{h*} %{soname*}} \
129 %{rdynamic:-export-dynamic} \
130 %{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \
131 %{static:-Bstatic}} \
132 %{symbolic:-Bsymbolic}"
134 /* A C statement to output to the stdio stream FILE an assembler
135 command to advance the location counter to a multiple of 1<<LOG
136 bytes if it is within MAX_SKIP bytes.
138 This is used to align code labels according to Intel recommendations. */
140 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
141 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
143 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
144 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
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