348ec9df3f09d1309d73488896189031491678f1
1 /* Definitions for Intel 386 running FreeBSD with ELF format
2 Copyright (C) 1996, 2000, 2002, 2004 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 GCC.
10 GCC 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 GCC 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 GCC; 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"
38 #undef DBX_REGISTER_NUMBER
39 #define DBX_REGISTER_NUMBER(n) \
40 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
42 #undef NO_PROFILE_COUNTERS
43 #define NO_PROFILE_COUNTERS 1
45 /* Tell final.c that we don't need a label passed to mcount. */
48 #define MCOUNT_NAME ".mcount"
50 /* Make gcc agree with <machine/ansi.h>. */
53 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
56 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
58 #undef WCHAR_TYPE_SIZE
59 #define WCHAR_TYPE_SIZE (TARGET_64BIT ? 32 : BITS_PER_WORD)
61 #undef SUBTARGET_EXTRA_SPECS /* i386.h bogusly defines it. */
62 #define SUBTARGET_EXTRA_SPECS \
63 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
65 /* Provide a STARTFILE_SPEC appropriate for FreeBSD. Here we add
66 the magical crtbegin.o file (see crtstuff.c) which provides part
67 of the support for getting C++ file-scope static object constructed
68 before entering `main'. */
71 #define STARTFILE_SPEC \
73 %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
74 %{!p:%{profile:gcrt1.o%s} \
75 %{!profile:crt1.o%s}}}} \
76 crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
78 /* Provide a ENDFILE_SPEC appropriate for FreeBSD. Here we tack on
79 the magical crtend.o file (see crtstuff.c) which provides part of
80 the support for getting C++ file-scope static object constructed
81 before entering `main', followed by a normal "finalizer" file,
85 #define ENDFILE_SPEC \
86 "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
88 /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support
89 for the special GCC options -static and -shared, which allow us to
90 link things in one of these three modes by applying the appropriate
91 combinations of options at link-time. We like to support here for
92 as many of the other GNU linker options as possible. But I don't
93 have the time to search for those flags. I am sure how to add
94 support for -soname shared_object_name. H.J.
96 I took out %{v:%{!V:-V}}. It is too much :-(. They can use
99 When the -shared link option is used a final link is not being
104 %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \
107 %{assert*} %{R*} %{rpath*} %{defsym*} \
108 %{shared:-Bshareable %{h*} %{soname*}} \
111 %{rdynamic:-export-dynamic} \
112 %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
113 %{static:-Bstatic}} \
114 %{symbolic:-Bsymbolic}"
116 /* A C statement to output to the stdio stream FILE an assembler
117 command to advance the location counter to a multiple of 1<<LOG
118 bytes if it is within MAX_SKIP bytes.
120 This is used to align code labels according to Intel recommendations. */
122 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
123 #undef ASM_OUTPUT_MAX_SKIP_ALIGN
124 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
126 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
127 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
131 /* Don't default to pcc-struct-return, we want to retain compatibility with
132 older gcc versions AND pcc-struct-return is nonreentrant.
133 (even though the SVR4 ABI for the i386 says that records and unions are
134 returned in memory). */
136 #undef DEFAULT_PCC_STRUCT_RETURN
137 #define DEFAULT_PCC_STRUCT_RETURN 0
139 /* FreeBSD sets the rounding precision of the FPU to 53 bits. Let the
140 compiler get the contents of <float.h> and std::numeric_limits correct. */
141 #define SUBTARGET_OVERRIDE_OPTIONS \
143 if (!TARGET_64BIT) { \
144 REAL_MODE_FORMAT (XFmode) \
145 = &ieee_extended_intel_96_round_53_format; \
146 REAL_MODE_FORMAT (TFmode) \
147 = &ieee_extended_intel_96_round_53_format; \