1/* Definitions for 64-bit SPARC running Linux-based GNU systems with ELF.
2   Copyright 1996, 1997, 1998 Free Software Foundation, Inc.
3   Contributed by David S. Miller (davem@caip.rutgers.edu)
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 SPARC_BI_ARCH
23
24#define LINUX_DEFAULT_ELF
25
26/* Don't assume anything about the header files. */
27#define NO_IMPLICIT_EXTERN_C
28
29#undef HAVE_ATEXIT
30#define HAVE_ATEXIT
31
32#include <sparc/sysv4.h>
33
34#undef MD_EXEC_PREFIX
35#undef MD_STARTFILE_PREFIX
36
37#if TARGET_CPU_DEFAULT == TARGET_CPU_v9 || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
38/* A 64 bit v9 compiler with stack-bias,
39   in a Medium/Low code model environment.  */
40
41#undef TARGET_DEFAULT
42#define TARGET_DEFAULT \
43  (MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
44   + MASK_STACK_BIAS + MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU)
45#endif
46
47/* Output at beginning of assembler file.  */
48/* The .file command should always begin the output.  */
49#undef ASM_FILE_START
50#define ASM_FILE_START(FILE)                                            \
51  do {                                                                  \
52        output_file_directive (FILE, main_input_filename);              \
53        fprintf (FILE, "\t.version\t\"01.01\"\n");                      \
54  } while (0)
55
56#undef ASM_CPU_DEFAULT_SPEC
57#define ASM_CPU_DEFAULT_SPEC "-Av9a"
58
59/* Provide a STARTFILE_SPEC appropriate for GNU/Linux.  Here we add
60   the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
61   provides part of the support for getting C++ file-scope static
62   object constructed before entering `main'. */
63
64#undef  STARTFILE_SPEC
65
66#define STARTFILE_SPEC32 \
67  "%{!shared: \
68     %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
69   crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
70
71#define STARTFILE_SPEC64 \
72  "%{!shared: \
73     %{pg:/usr/lib64/gcrt1.o%s} %{!pg:%{p:/usr/lib64/gcrt1.o%s} %{!p:/usr/lib64/crt1.o%s}}}\
74   /usr/lib64/crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
75
76#ifdef SPARC_BI_ARCH
77
78#if DEFAULT_ARCH32_P
79#define STARTFILE_SPEC "\
80%{m32:" STARTFILE_SPEC32 "} \
81%{m64:" STARTFILE_SPEC64 "} \
82%{!m32:%{!m64:" STARTFILE_SPEC32 "}}"
83#else
84#define STARTFILE_SPEC "\
85%{m32:" STARTFILE_SPEC32 "} \
86%{m64:" STARTFILE_SPEC64 "} \
87%{!m32:%{!m64:" STARTFILE_SPEC64 "}}"
88#endif
89
90#else
91
92#define STARTFILE_SPEC STARTFILE_SPEC64
93
94#endif
95
96/* Provide a ENDFILE_SPEC appropriate for GNU/Linux.  Here we tack on
97   the GNU/Linux magical crtend.o file (see crtstuff.c) which
98   provides part of the support for getting C++ file-scope static
99   object constructed before entering `main', followed by a normal
100   GNU/Linux "finalizer" file, `crtn.o'.  */
101
102#undef  ENDFILE_SPEC
103
104#define ENDFILE_SPEC32 \
105  "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
106
107#define ENDFILE_SPEC64 \
108  "%{!shared:crtend.o%s} %{shared:crtendS.o%s} /usr/lib64/crtn.o%s"
109
110#ifdef SPARC_BI_ARCH
111
112#if DEFAULT_ARCH32_P
113#define ENDFILE_SPEC "\
114%{m32:" ENDFILE_SPEC32 "} \
115%{m64:" ENDFILE_SPEC64 "} \
116%{!m32:%{!m64:" ENDFILE_SPEC32 "}}"
117#else
118#define ENDFILE_SPEC "\
119%{m32:" ENDFILE_SPEC32 "} \
120%{m64:" ENDFILE_SPEC64 "} \
121%{!m32:%{!m64:" ENDFILE_SPEC64 "}}"
122#endif
123
124#else
125
126#define ENDFILE_SPEC ENDFILE_SPEC64
127
128#endif
129
130#undef TARGET_VERSION
131#define TARGET_VERSION fprintf (stderr, " (sparc64 GNU/Linux with ELF)");
132
133/* The default code model.  */
134#undef SPARC_DEFAULT_CMODEL
135#define SPARC_DEFAULT_CMODEL CM_MEDLOW
136
137#undef WCHAR_TYPE
138#define WCHAR_TYPE "long int"
139
140#undef WCHAR_TYPE_SIZE
141#define WCHAR_TYPE_SIZE BITS_PER_WORD
142
143#undef LONG_DOUBLE_TYPE_SIZE
144#define LONG_DOUBLE_TYPE_SIZE 128
145
146#undef CPP_PREDEFINES
147#define CPP_PREDEFINES "-D__ELF__ -Dunix -D_LONGLONG -D__sparc__ -Dlinux -Asystem(unix) -Asystem(posix)"
148
149#undef CPP_SUBTARGET_SPEC
150#define CPP_SUBTARGET_SPEC "\
151%{fPIC:-D__PIC__ -D__pic__} \
152%{fpic:-D__PIC__ -D__pic__} \
153%{posix:-D_POSIX_SOURCE} \
154%{pthread:-D_REENTRANT} \
155"
156
157#undef LIB_SPEC
158#define LIB_SPEC \
159  "%{shared: -lc} \
160   %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
161     %{profile:-lc_p} %{!profile: -lc}}"
162
163/* Provide a LINK_SPEC appropriate for GNU/Linux.  Here we provide support
164   for the special GCC options -static and -shared, which allow us to
165   link things in one of these three modes by applying the appropriate
166   combinations of options at link-time. We like to support here for
167   as many of the other GNU linker options as possible. But I don't
168   have the time to search for those flags. I am sure how to add
169   support for -soname shared_object_name. H.J.
170
171   I took out %{v:%{!V:-V}}. It is too much :-(. They can use
172   -Wl,-V.
173
174   When the -shared link option is used a final link is not being
175   done.  */
176
177/* If ELF is the default format, we should not use /lib/elf. */
178
179#ifdef SPARC_BI_ARCH
180
181#undef SUBTARGET_EXTRA_SPECS
182#define SUBTARGET_EXTRA_SPECS \
183  { "link_arch32",       LINK_ARCH32_SPEC },              \
184  { "link_arch64",       LINK_ARCH64_SPEC },              \
185  { "link_arch_default", LINK_ARCH_DEFAULT_SPEC },	  \
186  { "link_arch",	 LINK_ARCH_SPEC },
187
188#define LINK_ARCH32_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
189  %{!shared: \
190    %{!ibcs: \
191      %{!static: \
192        %{rdynamic:-export-dynamic} \
193        %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
194        %{static:-static}}} \
195"
196
197#define LINK_ARCH64_SPEC "-m elf64_sparc -Y P,/usr/lib64 %{shared:-shared} \
198  %{!shared: \
199    %{!ibcs: \
200      %{!static: \
201        %{rdynamic:-export-dynamic} \
202        %{!dynamic-linker:-dynamic-linker /lib64/ld-linux.so.2}} \
203        %{static:-static}}} \
204"
205
206#define LINK_ARCH_SPEC "\
207%{m32:%(link_arch32)} \
208%{m64:%(link_arch64)} \
209%{!m32:%{!m64:%(link_arch_default)}} \
210"
211
212#define LINK_ARCH_DEFAULT_SPEC \
213(DEFAULT_ARCH32_P ? LINK_ARCH32_SPEC : LINK_ARCH64_SPEC)
214
215#undef  LINK_SPEC
216#define LINK_SPEC "\
217%(link_arch) \
218%{mlittle-endian:-EL} \
219"
220
221#undef	CC1_SPEC
222#if DEFAULT_ARCH32_P
223#define CC1_SPEC "\
224%{sun4:} %{target:} \
225%{mcypress:-mcpu=cypress} \
226%{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
227%{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
228%{m64:-mptr64 -mcpu=ultrasparc -mstack-bias} \
229"
230#else
231#define CC1_SPEC "\
232%{sun4:} %{target:} \
233%{mcypress:-mcpu=cypress} \
234%{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
235%{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
236%{m32:-mptr32 -mcpu=cypress -mno-stack-bias} \
237"
238#endif
239
240#if DEFAULT_ARCH32_P
241#define MULTILIB_DEFAULTS { "m32" }
242#else
243#define MULTILIB_DEFAULTS { "m64" }
244#endif
245
246#else /* !SPARC_BI_ARCH */
247
248#undef LINK_SPEC
249#define LINK_ARCH_SPEC "-m elf64_sparc -Y P,/usr/lib64 %{shared:-shared} \
250  %{!shared: \
251    %{!ibcs: \
252      %{!static: \
253        %{rdynamic:-export-dynamic} \
254        %{!dynamic-linker:-dynamic-linker /lib64/ld-linux.so.2}} \
255        %{static:-static}}} \
256%{mlittle-endian:-EL} \
257"
258
259#endif /* !SPARC_BI_ARCH */
260
261/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
262   It's safe to pass -s always, even if -g is not used. */
263#undef ASM_SPEC
264#define ASM_SPEC "\
265%{V} \
266%{v:%{!V:-V}} \
267%{!Qn:-Qy} \
268%{n} \
269%{T} \
270%{Ym,*} \
271%{Wa,*:%*} \
272-s %{fpic:-K PIC} %{fPIC:-K PIC} \
273%{mlittle-endian:-EL} \
274%(asm_cpu) %(asm_arch) \
275"
276
277/* Same as sparc.h */
278#undef DBX_REGISTER_NUMBER
279#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
280
281/* System V Release 4 uses DWARF debugging info.  Buf DWARF1 doesn't do
282   64-bit anything, so we use DWARF2.  */
283
284#undef DWARF2_DEBUGGING_INFO
285#undef DWARF_DEBUGGING_INFO
286#undef DBX_DEBUGGING_INFO
287#define DWARF2_DEBUGGING_INFO
288#define DBX_DEBUGGING_INFO
289
290#undef PREFERRED_DEBUGGING_TYPE
291#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
292
293#undef ASM_OUTPUT_ALIGNED_LOCAL
294#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)		\
295do {									\
296  fputs ("\t.local\t", (FILE));		\
297  assemble_name ((FILE), (NAME));					\
298  putc ('\n', (FILE));							\
299  ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN);			\
300} while (0)
301
302#undef COMMON_ASM_OP
303#define COMMON_ASM_OP "\t.common"
304
305/* This is how to output a definition of an internal numbered label where
306   PREFIX is the class of label and NUM is the number within the class.  */
307
308#undef  ASM_OUTPUT_INTERNAL_LABEL
309#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)	\
310  fprintf (FILE, ".L%s%d:\n", PREFIX, NUM)
311
312/* This is how to output a reference to an internal numbered label where
313   PREFIX is the class of label and NUM is the number within the class.  */
314
315#undef  ASM_OUTPUT_INTERNAL_LABELREF
316#define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM)	\
317  fprintf (FILE, ".L%s%d", PREFIX, NUM)
318
319/* This is how to store into the string LABEL
320   the symbol_ref name of an internal numbered label where
321   PREFIX is the class of label and NUM is the number within the class.
322   This is suitable for output with `assemble_name'.  */
323
324#undef  ASM_GENERATE_INTERNAL_LABEL
325#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)	\
326  sprintf (LABEL, "*.L%s%d", PREFIX, NUM)
327
328/* Stabs doesn't use this, and it confuses a simulator.  */
329/* ??? Need to see what DWARF needs, if anything.  */
330#undef ASM_IDENTIFY_GCC
331#define ASM_IDENTIFY_GCC(FILE)
332
333/* Define the names of various pseudo-ops used by the Sparc/svr4 assembler.
334   ??? If ints are 64 bits then UNALIGNED_INT_ASM_OP (defined elsewhere) is
335   misnamed.  These should all refer to explicit sizes (half/word/xword?),
336   anything other than short/int/long/etc.  */
337
338#define UNALIGNED_DOUBLE_INT_ASM_OP	".uaxword"
339
340/* DWARF bits.  */
341
342/* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.
343   Obviously the Dwarf2 folks havn't tried to actually build systems
344   with their spec.  On a 64-bit system, only 64-bit relocs become
345   RELATIVE relocations.  */
346
347/* #define DWARF_OFFSET_SIZE PTR_SIZE */
348
349/* Override MACHINE_STATE_{SAVE,RESTORE} because we have special
350   traps available which can get and set the condition codes
351   reliably.  */
352#undef MACHINE_STATE_SAVE
353#define MACHINE_STATE_SAVE(ID)				\
354  unsigned long int ms_flags, ms_saveret;		\
355  asm volatile("ta	0x20\n\t"			\
356	       "mov	%%g1, %0\n\t"			\
357	       "mov	%%g2, %1\n\t"			\
358	       : "=r" (ms_flags), "=r" (ms_saveret));
359
360#undef MACHINE_STATE_RESTORE
361#define MACHINE_STATE_RESTORE(ID)			\
362  asm volatile("mov	%0, %%g1\n\t"			\
363	       "mov	%1, %%g2\n\t"			\
364	       "ta	0x21\n\t"			\
365	       : /* no outputs */			\
366	       : "r" (ms_flags), "r" (ms_saveret));
367