Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids. Most
[dragonfly.git] / contrib / gcc / config / alpha / freebsd.h
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1/* Definitions for DEC AXP Alpha running FreeBSD using the ELF format
2 Copyright (C) 2000 Free Software Foundation, Inc.
3 Contributed by David O'Brien <obrien@FreeBSD.org>
4
5This file is part of GNU CC.
6
7GNU CC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU CC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU CC; see the file COPYING. If not, write to
19the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20
21/* This is used on Alpha platforms that use the ELF format.
22 This was taken from the NetBSD configuration, and modified
23 for FreeBSD/Alpha by Hidetoshi Shimokawa <simokawa@FreeBSD.ORG> */
24
25/* $FreeBSD: src/contrib/gcc/config/alpha/freebsd.h,v 1.9.2.3 2002/06/20 23:12:36 obrien Exp $ */
1de703da 26/* $DragonFly: src/contrib/gcc/config/alpha/Attic/freebsd.h,v 1.2 2003/06/17 04:24:01 dillon Exp $ */
984263bc
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27
28
29/* Names to predefine in the preprocessor for this target machine.
30 XXX FreeBSD, by convention, shouldn't do __alpha, but lots of applications
31 expect it because that's what OSF/1 does. */
32
33#undef CPP_PREDEFINES
34#define CPP_PREDEFINES \
35 "-D__alpha__ -D__alpha -Acpu(alpha) -Amachine(alpha)" \
36 FBSD_CPP_PREDEFINES
37
38#undef LINK_SPEC
39#define LINK_SPEC "-m elf64alpha \
40 %{p:%e`-p' not supported; use `-pg' and gprof(1)} \
41 %{Wl,*:%*} \
42 %{assert*} %{R*} %{rpath*} %{defsym*} \
43 %{shared:-Bshareable %{h*} %{soname*}} \
44 %{symbolic:-Bsymbolic} \
45 %{!shared: \
46 %{!static: \
47 %{rdynamic:-export-dynamic} \
48 %{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \
49 %{static:-Bstatic}}"
50
51/* Provide an ASM_SPEC appropriate for a FreeBSD/Alpha target. This differs
52 from the generic FreeBSD ASM_SPEC in that no special handling of PIC is
53 necessary on the Alpha. */
54
55#undef ASM_SPEC
56#define ASM_SPEC " %| %{mcpu=*:-m%*}"
57
58#undef ASM_FINAL_SPEC
59
60/* Provide a STARTFILE_SPEC for FreeBSD that is compatible with the
61 non-aout version used on i386. */
62
63#undef STARTFILE_SPEC
64#define STARTFILE_SPEC \
65 "%{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
66 crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
67
68/* Provide a ENDFILE_SPEC appropriate for ELF. Here we tack on the
69 magical crtend.o file which provides part of the support for
70 getting C++ file-scope static object constructed before entering
71 `main', followed by a normal ELF "finalizer" file, `crtn.o'. */
72
73#undef ENDFILE_SPEC
74#define ENDFILE_SPEC \
75 "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
76
77
78/************************[ Target stuff ]***********************************/
79
80/* Define the actual types of some ANSI-mandated types.
81 Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
82 c-common.c, and config/<arch>/<arch>.h. */
83
84/* alpha.h gets this wrong for FreeBSD. We use the GCC defaults instead. */
85#undef WCHAR_TYPE
86
87/* Handle cross-compilation on 32-bits machines (such as i386) for 64-bits
88 machines (Alpha in this case). */
89
90#if defined(__i386__)
91#undef HOST_BITS_PER_LONG
92#define HOST_BITS_PER_LONG 32
93#undef HOST_WIDE_INT
94#define HOST_WIDE_INT long long
95#undef HOST_BITS_PER_WIDE_INT
96#define HOST_BITS_PER_WIDE_INT 64
97#endif
98
99/* This is the pseudo-op used to generate a 64-bit word of data with a
100 specific value in some section. */
101
102#undef INT_ASM_OP
103#define INT_ASM_OP ".quad"
104
105#undef TARGET_VERSION
106#define TARGET_VERSION fprintf (stderr, " (FreeBSD/Alpha ELF)");
107
108#define TARGET_AOUT (0)
109#define TARGET_ELF (1)
110#define TARGET_UNDERSCORES (0)
111
112#undef OBJECT_FORMAT_COFF
113#undef EXTENDED_COFF
114
115#undef TARGET_DEFAULT
116#define TARGET_DEFAULT (MASK_FP | MASK_FPREGS | MASK_GAS)
117
118#undef HAS_INIT_SECTION
119
120/* Show that we need a GP when profiling. */
121#undef TARGET_PROFILING_NEEDS_GP
122#define TARGET_PROFILING_NEEDS_GP
123
124/* We always use gas here, so we don't worry about ECOFF assembler problems. */
125#undef TARGET_GAS
126#define TARGET_GAS 1
127
128
129/************************[ Assembler stuff ]********************************/
130
131/* This is how to begin an assembly language file.
132 ELF also needs a .version. */
133
134#undef ASM_FILE_START
135#define ASM_FILE_START(FILE) \
136 { \
137 alpha_write_verstamp (FILE); \
138 output_file_directive ((FILE), main_input_filename); \
139 fprintf ((FILE), "\t.version\t\"01.01\"\n"); \
140 fprintf ((FILE), "\t.set noat\n"); \
141 }
142
143extern void output_file_directive ();
144extern void alpha_output_lineno ();
145
146#undef ASM_OUTPUT_SOURCE_LINE
147#define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE) \
148 alpha_output_lineno ((STREAM), (LINE))
149
150/* Switch into a generic section.
151 This is currently only used to support section attributes.
152
153 We make the section read-only and executable for a function decl,
154 read-only for a const data decl, and writable for a non-const data decl. */
155#undef ASM_OUTPUT_SECTION_NAME
156#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \
157 fprintf ((FILE), ".section\t%s,\"%s\",@progbits\n", (NAME), \
158 (DECL) && TREE_CODE (DECL) == FUNCTION_DECL ? "ax" : \
159 (DECL) && DECL_READONLY_SECTION ((DECL), (RELOC)) ? "a" : "aw")
160
161/* A C statement or statements to switch to the appropriate
162 section for output of DECL. DECL is either a `VAR_DECL' node
163 or a constant of some sort. RELOC indicates whether forming
164 the initial value of DECL requires link-time relocations. */
165
166#undef SELECT_SECTION
167#define SELECT_SECTION(DECL, RELOC) \
168 { \
169 if (TREE_CODE (DECL) == STRING_CST) \
170 { \
171 if (! flag_writable_strings) \
172 const_section (); \
173 else \
174 data_section (); \
175 } \
176 else if (TREE_CODE (DECL) == VAR_DECL) \
177 { \
178 if ((flag_pic && (RELOC)) \
179 || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
180 || !DECL_INITIAL (DECL) \
181 || (DECL_INITIAL (DECL) != error_mark_node \
182 && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
183 data_section (); \
184 else \
185 const_section (); \
186 } \
187 else \
188 const_section (); \
189 }
190
191/* This is how we tell the assembler that two symbols have the same value. */
192
193#undef ASM_OUTPUT_DEF
194#define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
195 do { \
196 assemble_name((FILE), (NAME1)); \
197 fputs(" = ", (FILE)); \
198 assemble_name((FILE), (NAME2)); \
199 fputc('\n', (FILE)); \
200 } while (0)
201
202
203/************************[ Debugger stuff ]*********************************/
204
205/* This is the char to use for continuation (in case we need to turn
206 continuation back on). */
207
208#undef DBX_CONTIN_CHAR
209#define DBX_CONTIN_CHAR '?'