1 /* Definitions for SPARC running Linux-based GNU systems with ELF.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
3 Contributed by Eddie C. Dost (ecd@skynet.be)
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #define LINUX_DEFAULT_ELF
24 /* Don't assume anything about the header files. */
25 #define NO_IMPLICIT_EXTERN_C
27 /* GNU/Linux uses ctype from glibc.a. I am not sure how complete it is.
28 For now, we play safe. It may change later. */
31 #undef MULTIBYTE_CHARS
32 #define MULTIBYTE_CHARS 1
36 #undef MD_STARTFILE_PREFIX
38 /* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
39 the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
40 provides part of the support for getting C++ file-scope static
41 object constructed before entering `main'. */
45 #define STARTFILE_SPEC \
47 %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
48 crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
50 #define STARTFILE_SPEC \
52 %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
53 crti.o%s %{static:crtbeginT.o%s}\
54 %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
57 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
58 the GNU/Linux magical crtend.o file (see crtstuff.c) which
59 provides part of the support for getting C++ file-scope static
60 object constructed before entering `main', followed by a normal
61 GNU/Linux "finalizer" file, `crtn.o'. */
64 #define ENDFILE_SPEC \
65 "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
66 %{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
68 /* This is for -profile to use -lc_p instead of -lc. */
70 #define CC1_SPEC "%{profile:-p} \
72 %{mcypress:-mcpu=cypress} \
73 %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
74 %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
77 /* The GNU C++ standard library requires that these macros be defined. */
78 #undef CPLUSPLUS_CPP_SPEC
79 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
82 #define TARGET_VERSION fprintf (stderr, " (sparc GNU/Linux with ELF)");
84 #undef SUBTARGET_SWITCHES
85 #define SUBTARGET_SWITCHES \
86 {"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \
87 {"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") },
90 #define SIZE_TYPE "unsigned int"
93 #define PTRDIFF_TYPE "int"
96 #define WCHAR_TYPE "int"
98 #undef WCHAR_TYPE_SIZE
99 #define WCHAR_TYPE_SIZE 32
101 #undef CPP_PREDEFINES
102 #define CPP_PREDEFINES "-D__ELF__ -Dunix -D__sparc__ -D__gnu_linux__ -Dlinux -Asystem=unix -Asystem=posix"
104 #undef CPP_SUBTARGET_SPEC
106 #define CPP_SUBTARGET_SPEC \
107 "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
108 %{mlong-double-128:-D__LONG_DOUBLE_128__}"
110 #define CPP_SUBTARGET_SPEC \
111 "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
112 %{pthread:-D_REENTRANT} %{mlong-double-128:-D__LONG_DOUBLE_128__}"
116 /* We no longer link with libc_p.a or libg.a by default. If you
117 want to profile or debug the GNU/Linux C library, please add
118 -lc_p or -ggdb to LDFLAGS at the link time, respectively. */
122 "%{!shared: %{p:-lgmon} %{pg:-lgmon} %{profile:-lgmon -lc_p} \
123 %{!profile:%{!ggdb:-lc} %{ggdb:-lg}}}"
127 %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
128 %{profile:-lc_p} %{!profile: -lc}}"
133 %{mieee-fp:-lieee} %{p:-lgmon -lc_p} %{pg:-lgmon -lc_p} \
134 %{!p:%{!pg:%{!g*:-lc} %{g*:-lg}}}}"
137 /* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support
138 for the special GCC options -static and -shared, which allow us to
139 link things in one of these three modes by applying the appropriate
140 combinations of options at link-time. We like to support here for
141 as many of the other GNU linker options as possible. But I don't
142 have the time to search for those flags. I am sure how to add
143 support for -soname shared_object_name. H.J.
145 I took out %{v:%{!V:-V}}. It is too much :-(. They can use
148 When the -shared link option is used a final link is not being
151 /* If ELF is the default format, we should not use /lib/elf. */
155 #ifndef LINUX_DEFAULT_ELF
156 #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
160 %{rdynamic:-export-dynamic} \
161 %{!dynamic-linker:-dynamic-linker /lib/elf/ld-linux.so.1} \
162 %{!rpath:-rpath /lib/elf/}} %{static:-static}}}"
164 #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
168 %{rdynamic:-export-dynamic} \
169 %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.1}} \
173 #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
174 %{!mno-relax:%{!r:-relax}} \
178 %{rdynamic:-export-dynamic} \
179 %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
183 /* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
184 It's safe to pass -s always, even if -g is not used. */
187 "%{V} %{v:%{!V:-V}} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s %{fpic:-K PIC} \
188 %{fPIC:-K PIC} %(asm_cpu) %(asm_relax)"
190 /* Same as sparc.h */
191 #undef DBX_REGISTER_NUMBER
192 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
194 #undef ASM_OUTPUT_ALIGNED_LOCAL
195 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
197 fputs ("\t.local\t", (FILE)); \
198 assemble_name ((FILE), (NAME)); \
199 putc ('\n', (FILE)); \
200 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
204 #define COMMON_ASM_OP "\t.common\t"
206 #undef LOCAL_LABEL_PREFIX
207 #define LOCAL_LABEL_PREFIX "."
209 /* This is how to output a definition of an internal numbered label where
210 PREFIX is the class of label and NUM is the number within the class. */
212 #undef ASM_OUTPUT_INTERNAL_LABEL
213 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
214 fprintf (FILE, ".L%s%d:\n", PREFIX, NUM)
216 /* This is how to output a reference to an internal numbered label where
217 PREFIX is the class of label and NUM is the number within the class. */
219 #undef ASM_OUTPUT_INTERNAL_LABELREF
220 #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM) \
221 fprintf (FILE, ".L%s%d", PREFIX, NUM)
223 /* This is how to store into the string LABEL
224 the symbol_ref name of an internal numbered label where
225 PREFIX is the class of label and NUM is the number within the class.
226 This is suitable for output with `assemble_name'. */
228 #undef ASM_GENERATE_INTERNAL_LABEL
229 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
230 sprintf (LABEL, "*.L%s%ld", PREFIX, (long)(NUM))
233 /* Define for support of TFmode long double.
234 SPARC ABI says that long double is 4 words. */
235 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
237 /* Constant which presents upper bound of the above value. */
238 #define MAX_LONG_DOUBLE_TYPE_SIZE 128
240 /* Define this to set long double type size to use in libgcc2.c, which can
241 not depend on target_flags. */
242 #ifdef __LONG_DOUBLE_128__
243 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
245 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
248 #if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
249 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
252 /* Don't be different from other Linux platforms in this regard. */
253 #define HANDLE_PRAGMA_PACK_PUSH_POP
255 /* We use GNU ld so undefine this so that attribute((init_priority)) works. */
256 #undef CTORS_SECTION_ASM_OP
257 #undef DTORS_SECTION_ASM_OP
259 /* Do code reading to identify a signal frame, and set the frame
260 state data appropriately. See unwind-dw2.c for the structs. */
262 #define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
264 unsigned int *pc_ = (CONTEXT)->ra; \
265 int new_cfa_, i_, oldstyle_; \
266 int regs_off_, fpu_save_off_; \
267 int fpu_save_, this_cfa_; \
269 if (pc_[1] != 0x91d02010) /* ta 0x10 */ \
271 if (pc_[0] == 0x821020d8) /* mov NR_sigreturn, %g1 */ \
273 else if (pc_[0] == 0x82102065) /* mov NR_rt_sigreturn, %g1 */ \
280 fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4); \
284 regs_off_ = 96 + 128; \
285 fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4) + (2 * 4); \
287 this_cfa_ = (int) (CONTEXT)->cfa; \
288 new_cfa_ = *(int *)(((CONTEXT)->cfa) + (regs_off_+(4*4)+(14 * 4))); \
289 fpu_save_ = *(int *)((this_cfa_) + (fpu_save_off_)); \
290 (FS)->cfa_how = CFA_REG_OFFSET; \
291 (FS)->cfa_reg = 14; \
292 (FS)->cfa_offset = new_cfa_ - (int) (CONTEXT)->cfa; \
293 for (i_ = 1; i_ < 16; ++i_) \
297 (FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
298 (FS)->regs.reg[i_].loc.offset = \
299 this_cfa_ + (regs_off_+(4 * 4)+(i_ * 4)) - new_cfa_; \
301 for (i_ = 0; i_ < 16; ++i_) \
303 (FS)->regs.reg[i_ + 16].how = REG_SAVED_OFFSET; \
304 (FS)->regs.reg[i_ + 16].loc.offset = \
305 this_cfa_ + (i_ * 4) - new_cfa_; \
309 for (i_ = 0; i_ < 32; ++i_) \
311 (FS)->regs.reg[i_ + 32].how = REG_SAVED_OFFSET; \
312 (FS)->regs.reg[i_ + 32].loc.offset = \
313 (fpu_save_ + (i_ * 4)) - new_cfa_; \
316 /* Stick return address into %g0, same trick Alpha uses. */ \
317 (FS)->regs.reg[0].how = REG_SAVED_OFFSET; \
318 (FS)->regs.reg[0].loc.offset = this_cfa_+(regs_off_+4)-new_cfa_; \
319 (FS)->retaddr_column = 0; \