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956d6950 1/* Definitions for SPARC running Linux-based GNU systems with ELF.
c063dc98 2 Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
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3 Contributed by Eddie C. Dost (ecd@skynet.be)
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, 59 Temple Place - Suite 330,
20Boston, MA 02111-1307, USA. */
21
22#define LINUX_DEFAULT_ELF
23
24/* Don't assume anything about the header files. */
25#define NO_IMPLICIT_EXTERN_C
26
956d6950 27/* GNU/Linux uses ctype from glibc.a. I am not sure how complete it is.
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28 For now, we play safe. It may change later. */
29
30#if 0
31#undef MULTIBYTE_CHARS
32#define MULTIBYTE_CHARS 1
33#endif
34
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35#ifndef USE_GNULIBC_1
36#undef DEFAULT_VTABLE_THUNKS
37#define DEFAULT_VTABLE_THUNKS 1
38#endif
39
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40/* Use stabs instead of DWARF debug format. */
41#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
a0a301fc 42
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43#include <sparc/sysv4.h>
44
45#undef MD_EXEC_PREFIX
46#undef MD_STARTFILE_PREFIX
47
48/* Output at beginning of assembler file. */
49/* The .file command should always begin the output. */
50#undef ASM_FILE_START
51#define ASM_FILE_START(FILE) \
52 do { \
53 output_file_directive (FILE, main_input_filename); \
54 fprintf (FILE, "\t.version\t\"01.01\"\n"); \
55 } while (0)
56
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57/* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
58 the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
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59 provides part of the support for getting C++ file-scope static
60 object constructed before entering `main'. */
61
62#undef STARTFILE_SPEC
63#define STARTFILE_SPEC \
64 "%{!shared: \
65 %{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
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68/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
69 the GNU/Linux magical crtend.o file (see crtstuff.c) which
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70 provides part of the support for getting C++ file-scope static
71 object constructed before entering `main', followed by a normal
956d6950 72 GNU/Linux "finalizer" file, `crtn.o'. */
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73
74#undef ENDFILE_SPEC
75#define ENDFILE_SPEC \
76 "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
77
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78/* This is for -profile to use -lc_p instead of -lc. */
79#undef CC1_SPEC
80#define CC1_SPEC "%{profile:-p} \
81%{sun4:} %{target:} \
82%{mcypress:-mcpu=cypress} \
83%{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
84%{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
85"
86
1583720a 87#undef TARGET_VERSION
956d6950 88#define TARGET_VERSION fprintf (stderr, " (sparc GNU/Linux with ELF)");
1583720a 89
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90#undef SUBTARGET_SWITCHES
91#define SUBTARGET_SWITCHES \
92{"long-double-64", -MASK_LONG_DOUBLE_128, "Use 64 bit long doubles" }, \
93{"long-double-128", MASK_LONG_DOUBLE_128, "Use 128 bit long doubles" },
94
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95#undef SIZE_TYPE
96#define SIZE_TYPE "unsigned int"
97
98#undef PTRDIFF_TYPE
99#define PTRDIFF_TYPE "int"
100
101#undef WCHAR_TYPE
247cfc5c 102#define WCHAR_TYPE "int"
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103
104#undef WCHAR_TYPE_SIZE
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105#define WCHAR_TYPE_SIZE 32
106
107#undef MAX_WCHAR_TYPE_SIZE
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108
109#undef CPP_PREDEFINES
6d8cf409 110#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__sparc__ -Dlinux -Asystem(unix) -Asystem(posix)"
1583720a 111
a0a301fc 112#undef CPP_SUBTARGET_SPEC
985c5e5b 113#ifdef USE_GNULIBC_1
a0a301fc 114#define CPP_SUBTARGET_SPEC \
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115"%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
116%{mlong-double-128:-D__LONG_DOUBLE_128__}"
985c5e5b 117#else
a0a301fc 118#define CPP_SUBTARGET_SPEC \
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119"%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
120%{pthread:-D_REENTRANT} %{mlong-double-128:-D__LONG_DOUBLE_128__}"
985c5e5b 121#endif
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122
123#undef LIB_SPEC
1583720a 124/* We no longer link with libc_p.a or libg.a by default. If you
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125 want to profile or debug the GNU/Linux C library, please add
126 -lc_p or -ggdb to LDFLAGS at the link time, respectively. */
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127#if 1
128#ifdef USE_GNULIBC_1
129#define LIB_SPEC \
130 "%{!shared: %{p:-lgmon} %{pg:-lgmon} %{profile:-lgmon -lc_p} \
131 %{!profile:%{!ggdb:-lc} %{ggdb:-lg}}}"
132#else
1583720a 133#define LIB_SPEC \
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134 "%{shared: -lc} \
135 %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
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136 %{profile:-lc_p} %{!profile: -lc}}"
137#endif
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138#else
139#define LIB_SPEC \
140 "%{!shared: \
141 %{mieee-fp:-lieee} %{p:-lgmon -lc_p} %{pg:-lgmon -lc_p} \
142 %{!p:%{!pg:%{!g*:-lc} %{g*:-lg}}}}"
143#endif
144
956d6950 145/* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support
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146 for the special GCC options -static and -shared, which allow us to
147 link things in one of these three modes by applying the appropriate
148 combinations of options at link-time. We like to support here for
149 as many of the other GNU linker options as possible. But I don't
150 have the time to search for those flags. I am sure how to add
151 support for -soname shared_object_name. H.J.
152
153 I took out %{v:%{!V:-V}}. It is too much :-(. They can use
154 -Wl,-V.
155
156 When the -shared link option is used a final link is not being
157 done. */
158
159/* If ELF is the default format, we should not use /lib/elf. */
160
161#undef LINK_SPEC
985c5e5b 162#ifdef USE_GNULIBC_1
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163#ifndef LINUX_DEFAULT_ELF
164#define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
165 %{!shared: \
166 %{!ibcs: \
167 %{!static: \
168 %{rdynamic:-export-dynamic} \
169 %{!dynamic-linker:-dynamic-linker /lib/elf/ld-linux.so.1} \
170 %{!rpath:-rpath /lib/elf/}} %{static:-static}}}"
171#else
172#define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
173 %{!shared: \
174 %{!ibcs: \
175 %{!static: \
176 %{rdynamic:-export-dynamic} \
177 %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.1}} \
178 %{static:-static}}}"
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179#endif
180#else
181#define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
e95b1e6a 182 %{!mno-relax:%{!r:-relax}} \
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183 %{!shared: \
184 %{!ibcs: \
185 %{!static: \
186 %{rdynamic:-export-dynamic} \
187 %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
188 %{static:-static}}}"
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189#endif
190
191/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
192 It's safe to pass -s always, even if -g is not used. */
193#undef ASM_SPEC
194#define ASM_SPEC \
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195 "%{V} %{v:%{!V:-V}} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s %{fpic:-K PIC} \
196 %{fPIC:-K PIC} %(asm_relax)"
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197
198/* Same as sparc.h */
199#undef DBX_REGISTER_NUMBER
200#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
201
202/* We use stabs-in-elf for debugging, because that is what the native
203 toolchain uses. XXX */
204#undef PREFERRED_DEBUGGING_TYPE
205#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
206
207#undef ASM_OUTPUT_ALIGNED_LOCAL
208#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
209do { \
210 fputs ("\t.local\t", (FILE)); \
211 assemble_name ((FILE), (NAME)); \
212 putc ('\n', (FILE)); \
213 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
214} while (0)
215
216#undef COMMON_ASM_OP
217#define COMMON_ASM_OP "\t.common"
218
219/* This is how to output a definition of an internal numbered label where
220 PREFIX is the class of label and NUM is the number within the class. */
221
222#undef ASM_OUTPUT_INTERNAL_LABEL
223#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
224 fprintf (FILE, ".L%s%d:\n", PREFIX, NUM)
225
226/* This is how to output a reference to an internal numbered label where
227 PREFIX is the class of label and NUM is the number within the class. */
228
229#undef ASM_OUTPUT_INTERNAL_LABELREF
230#define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM) \
231 fprintf (FILE, ".L%s%d", PREFIX, NUM)
232
233/* This is how to store into the string LABEL
234 the symbol_ref name of an internal numbered label where
235 PREFIX is the class of label and NUM is the number within the class.
236 This is suitable for output with `assemble_name'. */
237
238#undef ASM_GENERATE_INTERNAL_LABEL
239#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
240 sprintf (LABEL, "*.L%s%d", PREFIX, NUM)
241
242\f
1583720a 243/* Define for support of TFmode long double and REAL_ARITHMETIC.
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244 Sparc ABI says that long double is 4 words. */
245#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
246
247/* Constant which presents upper bound of the above value. */
248#define MAX_LONG_DOUBLE_TYPE_SIZE 128
249
250/* Define this to set long double type size to use in libgcc2.c, which can
251 not depend on target_flags. */
252#ifdef __LONG_DOUBLE_128__
253#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
254#else
255#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
1583720a 256#endif
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257\f
258/* Override MACHINE_STATE_{SAVE,RESTORE} because we have special
259 traps available which can get and set the condition codes
260 reliably. */
261#undef MACHINE_STATE_SAVE
262#define MACHINE_STATE_SAVE(ID) \
263 unsigned long int ms_flags, ms_saveret; \
264 asm volatile("ta 0x20\n\t" \
265 "mov %%g1, %0\n\t" \
266 "mov %%g2, %1\n\t" \
267 : "=r" (ms_flags), "=r" (ms_saveret));
268
269#undef MACHINE_STATE_RESTORE
270#define MACHINE_STATE_RESTORE(ID) \
271 asm volatile("mov %0, %%g1\n\t" \
272 "mov %1, %%g2\n\t" \
273 "ta 0x21\n\t" \
274 : /* no outputs */ \
275 : "r" (ms_flags), "r" (ms_saveret));
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