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[pf3gnuchains/gcc-fork.git] / gcc / config / rs6000 / sysv4.h
1 /* Target definitions for GNU compiler for PowerPC running System V.4
2    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3    Free Software Foundation, Inc.
4    Contributed by Cygnus Support.
5
6 This file is part of GNU CC.
7
8 GNU CC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 GNU CC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GNU CC; see the file COPYING.  If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA.  */
22
23
24 /* Yes!  We are ELF.  */
25 #define TARGET_OBJECT_FORMAT OBJECT_ELF
26
27 /* Default ABI to compile code for.  */
28 #define DEFAULT_ABI rs6000_current_abi
29
30 /* Default ABI to use.  */
31 #define RS6000_ABI_NAME "sysv"
32
33 /* Override rs6000.h definition.  */
34 #undef  ASM_DEFAULT_SPEC
35 #define ASM_DEFAULT_SPEC "-mppc"
36
37 /* Override rs6000.h definition.  */
38 #undef  CPP_DEFAULT_SPEC
39 #define CPP_DEFAULT_SPEC "-D_ARCH_PPC"
40
41 /* Small data support types.  */
42 enum rs6000_sdata_type {
43   SDATA_NONE,                   /* No small data support.  */
44   SDATA_DATA,                   /* Just put data in .sbss/.sdata, don't use relocs.  */
45   SDATA_SYSV,                   /* Use r13 to point to .sdata/.sbss.  */
46   SDATA_EABI                    /* Use r13 like above, r2 points to .sdata2/.sbss2.  */
47 };
48
49 extern enum rs6000_sdata_type rs6000_sdata;
50
51 /* V.4/eabi switches.  */
52 #define MASK_NO_BITFIELD_TYPE   0x40000000      /* Set PCC_BITFIELD_TYPE_MATTERS to 0.  */
53 #define MASK_STRICT_ALIGN       0x20000000      /* Set STRICT_ALIGNMENT to 1.  */
54 #define MASK_RELOCATABLE        0x10000000      /* GOT pointers are PC relative.  */
55 #define MASK_EABI               0x08000000      /* Adhere to eabi, not System V spec.  */
56 #define MASK_LITTLE_ENDIAN      0x04000000      /* Target is little endian.  */
57 #define MASK_REGNAMES           0x02000000      /* Use alternate register names.  */
58 #define MASK_PROTOTYPE          0x01000000      /* Only prototyped fcns pass variable args.  */
59 #define MASK_NO_BITFIELD_WORD   0x00800000      /* Bitfields cannot cross word boundaries */
60
61 #define TARGET_NO_BITFIELD_TYPE (target_flags & MASK_NO_BITFIELD_TYPE)
62 #define TARGET_STRICT_ALIGN     (target_flags & MASK_STRICT_ALIGN)
63 #define TARGET_RELOCATABLE      (target_flags & MASK_RELOCATABLE)
64 #define TARGET_EABI             (target_flags & MASK_EABI)
65 #define TARGET_LITTLE_ENDIAN    (target_flags & MASK_LITTLE_ENDIAN)
66 #define TARGET_REGNAMES         (target_flags & MASK_REGNAMES)
67 #define TARGET_PROTOTYPE        (target_flags & MASK_PROTOTYPE)
68 #define TARGET_NO_BITFIELD_WORD (target_flags & MASK_NO_BITFIELD_WORD)
69 #define TARGET_TOC              ((target_flags & MASK_64BIT)            \
70                                  || ((target_flags & (MASK_RELOCATABLE  \
71                                                       | MASK_MINIMAL_TOC)) \
72                                      && flag_pic > 1)                   \
73                                  || DEFAULT_ABI == ABI_AIX)
74
75 #define TARGET_BITFIELD_TYPE    (! TARGET_NO_BITFIELD_TYPE)
76 #define TARGET_BIG_ENDIAN       (! TARGET_LITTLE_ENDIAN)
77 #define TARGET_NO_PROTOTYPE     (! TARGET_PROTOTYPE)
78 #define TARGET_NO_TOC           (! TARGET_TOC)
79 #define TARGET_NO_EABI          (! TARGET_EABI)
80
81 /* Strings provided by SUBTARGET_OPTIONS */
82 extern const char *rs6000_abi_name;
83 extern const char *rs6000_sdata_name;
84
85 /* Override rs6000.h definition.  */
86 #undef  SUBTARGET_OPTIONS
87 #define SUBTARGET_OPTIONS                                               \
88   { "call-",  &rs6000_abi_name, N_("Select ABI calling convention") },  \
89   { "sdata=", &rs6000_sdata_name, N_("Select method for sdata handling") }
90
91 /* Max # of bytes for variables to automatically be put into the .sdata
92    or .sdata2 sections.  */
93 extern int g_switch_value;              /* Value of the -G xx switch.  */
94 extern int g_switch_set;                /* Whether -G xx was passed.  */
95
96 #define SDATA_DEFAULT_SIZE 8
97
98 /* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be just
99    the same as -mminimal-toc.  */
100 /* Override rs6000.h definition.  */
101 #undef  SUBTARGET_SWITCHES
102 #define SUBTARGET_SWITCHES                                              \
103   { "bit-align",        -MASK_NO_BITFIELD_TYPE,                         \
104     N_("Align to the base type of the bit-field") },                    \
105   { "no-bit-align",      MASK_NO_BITFIELD_TYPE,                         \
106     N_("Don't align to the base type of the bit-field") },              \
107   { "strict-align",      MASK_STRICT_ALIGN,                             \
108     N_("Don't assume that unaligned accesses are handled by the system") }, \
109   { "no-strict-align",  -MASK_STRICT_ALIGN,                             \
110     N_("Assume that unaligned accesses are handled by the system") },   \
111   { "relocatable",       MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
112     N_("Produce code relocatable at runtime") },                        \
113   { "no-relocatable",   -MASK_RELOCATABLE,                              \
114     N_("Don't produce code relocatable at runtime") },                  \
115   { "relocatable-lib",   MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
116     N_("Produce code relocatable at runtime") },                        \
117   { "no-relocatable-lib", -MASK_RELOCATABLE,                            \
118     N_("Don't produce code relocatable at runtime") },                  \
119   { "little-endian",     MASK_LITTLE_ENDIAN,                            \
120     N_("Produce little endian code") },                                 \
121   { "little",            MASK_LITTLE_ENDIAN,                            \
122     N_("Produce little endian code") },                                 \
123   { "big-endian",       -MASK_LITTLE_ENDIAN,                            \
124     N_("Produce big endian code") },                                    \
125   { "big",              -MASK_LITTLE_ENDIAN,                            \
126     N_("Produce big endian code") },                                    \
127   { "no-toc",            0, N_("no description yet") },                 \
128   { "toc",               MASK_MINIMAL_TOC, N_("no description yet") },  \
129   { "full-toc",          MASK_MINIMAL_TOC, N_("no description yet") },  \
130   { "prototype",         MASK_PROTOTYPE, N_("no description yet") },    \
131   { "no-prototype",     -MASK_PROTOTYPE, N_("no description yet") },    \
132   { "no-traceback",      0, N_("no description yet") },                 \
133   { "eabi",              MASK_EABI, N_("Use EABI") },                   \
134   { "no-eabi",          -MASK_EABI, N_("Don't use EABI") },             \
135   { "bit-word",         -MASK_NO_BITFIELD_WORD, "" },                   \
136   { "no-bit-word",       MASK_NO_BITFIELD_WORD,                         \
137     N_("Do not allow bit-fields to cross word boundaries") },           \
138   { "regnames",           MASK_REGNAMES,                                \
139     N_("Use alternate register names") },                               \
140   { "no-regnames",       -MASK_REGNAMES,                                \
141     N_("Don't use alternate register names") },                         \
142   { "sdata",             0, N_("no description yet") },                 \
143   { "no-sdata",          0, N_("no description yet") },                 \
144   { "sim",               0,                                             \
145     N_("Link with libsim.a, libc.a and sim-crt0.o") },                  \
146   { "ads",               0,                                             \
147     N_("Link with libads.a, libc.a and crt0.o") },                      \
148   { "yellowknife",       0,                                             \
149     N_("Link with libyk.a, libc.a and crt0.o") },                       \
150   { "mvme",              0,                                             \
151     N_("Link with libmvme.a, libc.a and crt0.o") },                     \
152   { "emb",               0,                                             \
153     N_("Set the PPC_EMB bit in the ELF flags header") },                \
154   { "vxworks",           0, N_("no description yet") },                 \
155   { "windiss",           0, N_("Use the WindISS simulator") },          \
156   { "shlib",             0, N_("no description yet") },                 \
157   EXTRA_SUBTARGET_SWITCHES                                              \
158   { "newlib",            0, N_("no description yet") },
159
160 /* This is meant to be redefined in the host dependent files.  */
161 #define EXTRA_SUBTARGET_SWITCHES
162
163 /* Sometimes certain combinations of command options do not make sense
164    on a particular target machine.  You can define a macro
165    `OVERRIDE_OPTIONS' to take account of this.  This macro, if
166    defined, is executed once just after all the command options have
167    been parsed.
168
169    The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
170    get control.  */
171
172 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
173 do {                                                                    \
174   if (!g_switch_set)                                                    \
175     g_switch_value = SDATA_DEFAULT_SIZE;                                \
176                                                                         \
177   if (!strcmp (rs6000_abi_name, "sysv"))                                \
178     rs6000_current_abi = ABI_V4;                                        \
179   else if (!strcmp (rs6000_abi_name, "sysv-noeabi"))                    \
180     {                                                                   \
181       rs6000_current_abi = ABI_V4;                                      \
182       target_flags &= ~ MASK_EABI;                                      \
183     }                                                                   \
184   else if (!strcmp (rs6000_abi_name, "sysv-eabi")                       \
185            || !strcmp (rs6000_abi_name, "eabi"))                        \
186     {                                                                   \
187       rs6000_current_abi = ABI_V4;                                      \
188       target_flags |= MASK_EABI;                                        \
189     }                                                                   \
190   else if (!strcmp (rs6000_abi_name, "aix"))                            \
191     {                                                                   \
192       rs6000_current_abi = ABI_AIX_NODESC;                              \
193       target_flags |= MASK_EABI;                                        \
194     }                                                                   \
195   else if (!strcmp (rs6000_abi_name, "aixdesc"))                        \
196     rs6000_current_abi = ABI_AIX;                                       \
197   else if (!strcmp (rs6000_abi_name, "freebsd"))                        \
198     rs6000_current_abi = ABI_V4;                                        \
199   else if (!strcmp (rs6000_abi_name, "linux"))                          \
200     rs6000_current_abi = ABI_V4;                                        \
201   else if (!strcmp (rs6000_abi_name, "gnu"))                            \
202     rs6000_current_abi = ABI_V4;                                        \
203   else if (!strcmp (rs6000_abi_name, "netbsd"))                         \
204     rs6000_current_abi = ABI_V4;                                        \
205   else if (!strcmp (rs6000_abi_name, "i960-old"))                       \
206     {                                                                   \
207       rs6000_current_abi = ABI_V4;                                      \
208       target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI                   \
209                        | MASK_NO_BITFIELD_WORD);                        \
210       target_flags &= ~MASK_STRICT_ALIGN;                               \
211     }                                                                   \
212   else                                                                  \
213     {                                                                   \
214       rs6000_current_abi = ABI_V4;                                      \
215       error ("bad value for -mcall-%s", rs6000_abi_name);               \
216     }                                                                   \
217                                                                         \
218   if (rs6000_sdata_name)                                                \
219     {                                                                   \
220       if (!strcmp (rs6000_sdata_name, "none"))                          \
221         rs6000_sdata = SDATA_NONE;                                      \
222       else if (!strcmp (rs6000_sdata_name, "data"))                     \
223         rs6000_sdata = SDATA_DATA;                                      \
224       else if (!strcmp (rs6000_sdata_name, "default"))                  \
225         rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV;         \
226       else if (!strcmp (rs6000_sdata_name, "sysv"))                     \
227         rs6000_sdata = SDATA_SYSV;                                      \
228       else if (!strcmp (rs6000_sdata_name, "eabi"))                     \
229         rs6000_sdata = SDATA_EABI;                                      \
230       else                                                              \
231         error ("bad value for -msdata=%s", rs6000_sdata_name);          \
232     }                                                                   \
233   else if (DEFAULT_ABI == ABI_V4)                                       \
234     {                                                                   \
235       rs6000_sdata = SDATA_DATA;                                        \
236       rs6000_sdata_name = "data";                                       \
237     }                                                                   \
238   else                                                                  \
239     {                                                                   \
240       rs6000_sdata = SDATA_NONE;                                        \
241       rs6000_sdata_name = "none";                                       \
242     }                                                                   \
243                                                                         \
244   if (TARGET_RELOCATABLE &&                                             \
245       (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV))       \
246     {                                                                   \
247       rs6000_sdata = SDATA_DATA;                                        \
248       error ("-mrelocatable and -msdata=%s are incompatible",           \
249              rs6000_sdata_name);                                        \
250     }                                                                   \
251                                                                         \
252   else if (flag_pic &&                                                  \
253            (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV))  \
254     {                                                                   \
255       rs6000_sdata = SDATA_DATA;                                        \
256       error ("-f%s and -msdata=%s are incompatible",                    \
257              (flag_pic > 1) ? "PIC" : "pic",                            \
258              rs6000_sdata_name);                                        \
259     }                                                                   \
260                                                                         \
261   if (rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4)              \
262     {                                                                   \
263       rs6000_sdata = SDATA_NONE;                                        \
264       error ("-msdata=%s and -mcall-%s are incompatible",               \
265              rs6000_sdata_name, rs6000_abi_name);                       \
266     }                                                                   \
267                                                                         \
268   if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC)                        \
269     {                                                                   \
270       target_flags |= MASK_MINIMAL_TOC;                                 \
271       error ("-mrelocatable and -mno-minimal-toc are incompatible");    \
272     }                                                                   \
273                                                                         \
274   if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX)              \
275     {                                                                   \
276       target_flags &= ~MASK_RELOCATABLE;                                \
277       error ("-mrelocatable and -mcall-%s are incompatible",            \
278              rs6000_abi_name);                                          \
279     }                                                                   \
280                                                                         \
281   if (flag_pic > 1 && rs6000_current_abi == ABI_AIX)                    \
282     {                                                                   \
283       flag_pic = 0;                                                     \
284       error ("-fPIC and -mcall-%s are incompatible",                    \
285              rs6000_abi_name);                                          \
286     }                                                                   \
287                                                                         \
288   if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN)            \
289     {                                                                   \
290       target_flags &= ~MASK_LITTLE_ENDIAN;                              \
291       error ("-mcall-aixdesc must be big endian");                      \
292     }                                                                   \
293                                                                         \
294   /* Treat -fPIC the same as -mrelocatable.  */                         \
295   if (flag_pic > 1)                                                     \
296     target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC; \
297                                                                         \
298   else if (TARGET_RELOCATABLE)                                          \
299     flag_pic = 2;                                                       \
300                                                                         \
301 } while (0)
302
303
304 /* Override rs6000.h definition.  */
305 #undef  TARGET_DEFAULT
306 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
307
308 /* Override rs6000.h definition.  */
309 #undef  PROCESSOR_DEFAULT
310 #define PROCESSOR_DEFAULT PROCESSOR_PPC750
311
312 #define FIXED_R2 1
313 /* System V.4 uses register 13 as a pointer to the small data area,
314    so it is not available to the normal user.  */
315 #define FIXED_R13 1
316
317 /* Size of the V.4 varargs area if needed.  */
318 /* Override rs6000.h definition.  */
319 #undef  RS6000_VARARGS_AREA
320 #define RS6000_VARARGS_AREA ((cfun->machine->sysv_varargs_p) ? RS6000_VARARGS_SIZE : 0)
321
322 /* Override default big endianism definitions in rs6000.h.  */
323 #undef  BYTES_BIG_ENDIAN
324 #undef  WORDS_BIG_ENDIAN
325 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
326 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
327
328 /* Define this to set the endianness to use in libgcc2.c, which can
329    not depend on target_flags.  */
330 #if !defined(_LITTLE_ENDIAN) && !defined(__sun__)
331 #define LIBGCC2_WORDS_BIG_ENDIAN 1
332 #else
333 #define LIBGCC2_WORDS_BIG_ENDIAN 0
334 #endif
335
336 /* Define cutoff for using external functions to save floating point.
337    Currently on V.4, always use inline stores.  */
338 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
339
340 /* Put jump tables in read-only memory, rather than in .text.  */
341 #define JUMP_TABLES_IN_TEXT_SECTION 0
342
343 /* Prefix and suffix to use to saving floating point.  */
344 #define SAVE_FP_PREFIX "_savefpr_"
345 #define SAVE_FP_SUFFIX "_l"
346
347 /* Prefix and suffix to use to restoring floating point.  */
348 #define RESTORE_FP_PREFIX "_restfpr_"
349 #define RESTORE_FP_SUFFIX "_l"
350
351 /* Type used for ptrdiff_t, as a string used in a declaration.  */
352 #define PTRDIFF_TYPE "int"
353
354 /* Type used for wchar_t, as a string used in a declaration.  */
355 /* Override svr4.h definition.  */
356 #undef  WCHAR_TYPE
357 #define WCHAR_TYPE "long int"
358
359 /* Width of wchar_t in bits.  */
360 /* Override svr4.h definition.  */
361 #undef  WCHAR_TYPE_SIZE
362 #define WCHAR_TYPE_SIZE 32
363
364 /* Make int foo : 8 not cause structures to be aligned to an int boundary.  */
365 /* Override elfos.h definition.  */
366 #undef  PCC_BITFIELD_TYPE_MATTERS
367 #define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
368
369 #undef  BITFIELD_NBYTES_LIMITED
370 #define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
371
372 /* Define this macro to be the value 1 if instructions will fail to
373    work if given data not on the nominal alignment.  If instructions
374    will merely go slower in that case, define this macro as 0.  */
375 #undef  STRICT_ALIGNMENT
376 #define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
377
378 /* Alignment in bits of the stack boundary.  Note, in order to allow building
379    one set of libraries with -mno-eabi instead of eabi libraries and non-eabi
380    versions, just use 64 as the stack boundary.  */
381 #undef  STACK_BOUNDARY
382 #define STACK_BOUNDARY  (TARGET_ALTIVEC_ABI ? 128 : 64)
383
384 /* Real stack boundary as mandated by the appropriate ABI.  */
385 #define ABI_STACK_BOUNDARY ((TARGET_EABI && !TARGET_ALTIVEC_ABI) ? 64 : 128)
386
387 /* An expression for the alignment of a structure field FIELD if the
388    alignment computed in the usual way is COMPUTED.  */
389 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED)                                   \
390         ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE)     \
391          ? 128 : COMPUTED)
392
393 /* Define this macro as an expression for the alignment of a type
394    (given by TYPE as a tree node) if the alignment computed in the
395    usual way is COMPUTED and the alignment explicitly specified was
396    SPECIFIED.  */
397 #define ROUND_TYPE_ALIGN(TYPE, COMPUTED, SPECIFIED)                     \
398         ((TARGET_ALTIVEC  && TREE_CODE (TYPE) == VECTOR_TYPE)           \
399          ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128)                     \
400          : MAX (COMPUTED, SPECIFIED))
401
402 #undef  BIGGEST_FIELD_ALIGNMENT
403 #undef  ADJUST_FIELD_ALIGN
404
405 /* Use ELF style section commands.  */
406
407 #define TEXT_SECTION_ASM_OP     "\t.section\t\".text\""
408
409 #define DATA_SECTION_ASM_OP     "\t.section\t\".data\""
410
411 #define BSS_SECTION_ASM_OP      "\t.section\t\".bss\""
412
413 /* Override elfos.h definition.  */
414 #undef  INIT_SECTION_ASM_OP
415 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
416
417 /* Override elfos.h definition.  */
418 #undef  FINI_SECTION_ASM_OP
419 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
420
421 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
422
423 /* Put PC relative got entries in .got2.  */
424 #define MINIMAL_TOC_SECTION_ASM_OP \
425   ((TARGET_RELOCATABLE || flag_pic) ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
426
427 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
428 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
429 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
430
431 /* Besides the usual ELF sections, we need a toc section.  */
432 /* Override elfos.h definition.  */
433 #undef  EXTRA_SECTIONS
434 #define EXTRA_SECTIONS in_const, in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
435
436 /* Override elfos.h definition.  */
437 #undef  EXTRA_SECTION_FUNCTIONS
438 #define EXTRA_SECTION_FUNCTIONS                                         \
439   CONST_SECTION_FUNCTION                                                \
440   TOC_SECTION_FUNCTION                                                  \
441   SDATA_SECTION_FUNCTION                                                \
442   SDATA2_SECTION_FUNCTION                                               \
443   SBSS_SECTION_FUNCTION                                                 \
444   INIT_SECTION_FUNCTION                                                 \
445   FINI_SECTION_FUNCTION
446
447 #define TOC_SECTION_FUNCTION                                            \
448 void                                                                    \
449 toc_section ()                                                          \
450 {                                                                       \
451   if (in_section != in_toc)                                             \
452     {                                                                   \
453       in_section = in_toc;                                              \
454       if (DEFAULT_ABI == ABI_AIX                                        \
455           && TARGET_MINIMAL_TOC                                         \
456           && !TARGET_RELOCATABLE)                                       \
457         {                                                               \
458           if (! toc_initialized)                                        \
459             {                                                           \
460               toc_initialized = 1;                                      \
461               fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);       \
462               ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "LCTOC", 0);     \
463               fprintf (asm_out_file, "\t.tc ");                         \
464               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
465               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
466               fprintf (asm_out_file, "\n");                             \
467                                                                         \
468               fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
469               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
470               fprintf (asm_out_file, " = .+32768\n");                   \
471             }                                                           \
472           else                                                          \
473             fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
474         }                                                               \
475       else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE)           \
476         fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);             \
477       else                                                              \
478         {                                                               \
479           fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);   \
480           if (! toc_initialized)                                        \
481             {                                                           \
482               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
483               fprintf (asm_out_file, " = .+32768\n");                   \
484               toc_initialized = 1;                                      \
485             }                                                           \
486         }                                                               \
487     }                                                                   \
488 }                                                                       \
489                                                                         \
490 extern int in_toc_section PARAMS ((void));                              \
491 int in_toc_section ()                                                   \
492 {                                                                       \
493   return in_section == in_toc;                                          \
494 }
495
496 #define SDATA_SECTION_FUNCTION                                          \
497 void                                                                    \
498 sdata_section ()                                                        \
499 {                                                                       \
500   if (in_section != in_sdata)                                           \
501     {                                                                   \
502       in_section = in_sdata;                                            \
503       fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP);             \
504     }                                                                   \
505 }
506
507 #define SDATA2_SECTION_FUNCTION                                         \
508 void                                                                    \
509 sdata2_section ()                                                       \
510 {                                                                       \
511   if (in_section != in_sdata2)                                          \
512     {                                                                   \
513       in_section = in_sdata2;                                           \
514       fprintf (asm_out_file, "%s\n", SDATA2_SECTION_ASM_OP);            \
515     }                                                                   \
516 }
517
518 #define SBSS_SECTION_FUNCTION                                           \
519 void                                                                    \
520 sbss_section ()                                                         \
521 {                                                                       \
522   if (in_section != in_sbss)                                            \
523     {                                                                   \
524       in_section = in_sbss;                                             \
525       fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP);              \
526     }                                                                   \
527 }
528
529 #define INIT_SECTION_FUNCTION                                           \
530 void                                                                    \
531 init_section ()                                                         \
532 {                                                                       \
533   if (in_section != in_init)                                            \
534     {                                                                   \
535       in_section = in_init;                                             \
536       fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP);              \
537     }                                                                   \
538 }
539
540 #define FINI_SECTION_FUNCTION                                           \
541 void                                                                    \
542 fini_section ()                                                         \
543 {                                                                       \
544   if (in_section != in_fini)                                            \
545     {                                                                   \
546       in_section = in_fini;                                             \
547       fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP);              \
548     }                                                                   \
549 }
550
551 /* A C statement or statements to switch to the appropriate section
552    for output of RTX in mode MODE.  You can assume that RTX is some
553    kind of constant in RTL.  The argument MODE is redundant except in
554    the case of a `const_int' rtx.  Select the section by calling
555    `text_section' or one of the alternatives for other sections.
556
557    Do not define this macro if you put all constants in the read-only
558    data section.  */
559
560 /* Override elfos.h definition.  */
561 #undef  SELECT_RTX_SECTION
562 #define SELECT_RTX_SECTION(MODE, X, ALIGN) rs6000_select_rtx_section (MODE, X)
563
564 /* A C statement or statements to switch to the appropriate
565    section for output of DECL.  DECL is either a `VAR_DECL' node
566    or a constant of some sort.  RELOC indicates whether forming
567    the initial value of DECL requires link-time relocations.  */
568
569 /* Override elfos.h definition.  */
570 #undef  TARGET_ASM_SELECT_SECTION
571 #define TARGET_ASM_SELECT_SECTION  rs6000_elf_select_section
572
573 /* A C statement to build up a unique section name, expressed as a
574    STRING_CST node, and assign it to DECL_SECTION_NAME (decl).
575    RELOC indicates whether the initial value of EXP requires
576    link-time relocations.  If you do not define this macro, GCC will use
577    the symbol name prefixed by `.' as the section name.  Note - this
578    macro can now be called for uninitialized data items as well as
579    initialised data and functions.  */
580
581 /* Override default elf definition.  */
582 #define TARGET_ASM_UNIQUE_SECTION  rs6000_elf_unique_section
583
584 /* Return non-zero if this entry is to be written into the constant pool
585    in a special way.  We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
586    containing one of them.  If -mfp-in-toc (the default), we also do
587    this for floating-point constants.  We actually can only do this
588    if the FP formats of the target and host machines are the same, but
589    we can't check that since not every file that uses
590    GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
591
592    Unlike AIX, we don't key off of -mminimal-toc, but instead do not
593    allow floating point constants in the TOC if -mrelocatable.  */
594
595 #undef  ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
596 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE)                        \
597   (TARGET_TOC                                                           \
598    && (GET_CODE (X) == SYMBOL_REF                                       \
599        || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS      \
600            && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF)           \
601        || GET_CODE (X) == LABEL_REF                                     \
602        || (GET_CODE (X) == CONST_INT                                    \
603            && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode))      \
604        || (!TARGET_NO_FP_IN_TOC                                         \
605            && !TARGET_RELOCATABLE                                       \
606            && GET_CODE (X) == CONST_DOUBLE                              \
607            && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT               \
608            && BITS_PER_WORD == HOST_BITS_PER_INT)))
609
610 /* These macros generate the special .type and .size directives which
611    are used to set the corresponding fields of the linker symbol table
612    entries in an ELF object file under SVR4.  These macros also output
613    the starting labels for the relevant functions/objects.  */
614
615 /* Write the extra assembler code needed to declare a function properly.
616    Some svr4 assemblers need to also have something extra said about the
617    function's return value.  We allow for that here.  */
618
619 extern int rs6000_pic_labelno;
620
621 /* Override elfos.h definition.  */
622 #undef  ASM_DECLARE_FUNCTION_NAME
623 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
624   do {                                                                  \
625     const char *const init_ptr = (TARGET_64BIT) ? ".quad" : ".long";    \
626                                                                         \
627     if (TARGET_RELOCATABLE                                              \
628         && (get_pool_size () != 0 || current_function_profile)          \
629         && uses_TOC())                                                  \
630       {                                                                 \
631         char buf[256];                                                  \
632                                                                         \
633         ASM_OUTPUT_INTERNAL_LABEL (FILE, "LCL", rs6000_pic_labelno);    \
634                                                                         \
635         ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1);                  \
636         fprintf (FILE, "\t%s ", init_ptr);                              \
637         assemble_name (FILE, buf);                                      \
638         putc ('-', FILE);                                               \
639         ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno);   \
640         assemble_name (FILE, buf);                                      \
641         putc ('\n', FILE);                                              \
642       }                                                                 \
643                                                                         \
644     fprintf (FILE, "%s", TYPE_ASM_OP);                                  \
645     assemble_name (FILE, NAME);                                         \
646     putc (',', FILE);                                                   \
647     fprintf (FILE, TYPE_OPERAND_FMT, "function");                       \
648     putc ('\n', FILE);                                                  \
649     ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                      \
650                                                                         \
651     if (DEFAULT_ABI == ABI_AIX)                                         \
652       {                                                                 \
653         const char *desc_name, *orig_name;                              \
654                                                                         \
655         STRIP_NAME_ENCODING (orig_name, NAME);                          \
656         desc_name = orig_name;                                          \
657         while (*desc_name == '.')                                       \
658           desc_name++;                                                  \
659                                                                         \
660         if (TREE_PUBLIC (DECL))                                         \
661           fprintf (FILE, "\t.globl %s\n", desc_name);                   \
662                                                                         \
663         fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);             \
664         fprintf (FILE, "%s:\n", desc_name);                             \
665         fprintf (FILE, "\t%s %s\n", init_ptr, orig_name);               \
666         fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr);       \
667         if (DEFAULT_ABI == ABI_AIX)                                     \
668           fprintf (FILE, "\t%s 0\n", init_ptr);                         \
669         fprintf (FILE, "\t.previous\n");                                \
670       }                                                                 \
671     ASM_OUTPUT_LABEL (FILE, NAME);                                      \
672   } while (0)
673
674 /* A C compound statement that outputs the assembler code for a thunk function,
675     used to implement C++ virtual function calls with multiple inheritance.  The
676     thunk acts as a wrapper around a virtual function, adjusting the implicit
677     object parameter before handing control off to the real function.
678
679     First, emit code to add the integer DELTA to the location that contains the
680     incoming first argument.  Assume that this argument contains a pointer, and
681     is the one used to pass the this' pointer in C++.  This is the incoming
682     argument *before* the function prologue, e.g. %o0' on a sparc.  The
683     addition must preserve the values of all other incoming arguments.
684
685     After the addition, emit code to jump to FUNCTION, which is a
686     FUNCTION_DECL'.  This is a direct pure jump, not a call, and does not touch
687     the return address.  Hence returning from FUNCTION will return to whoever
688     called the current thunk'.
689
690     The effect must be as if FUNCTION had been called directly with the adjusted
691     first argument.  This macro is responsible for emitting all of the code for
692     a thunk function; FUNCTION_PROLOGUE' and FUNCTION_EPILOGUE' are not
693     invoked.
694
695     The THUNK_FNDECL is redundant.  (DELTA and FUNCTION have already been
696     extracted from it.)  It might possibly be useful on some targets, but
697     probably not.
698
699     If you do not define this macro, the target-independent code in the C++
700     frontend will generate a less efficient heavyweight thunk that calls
701     FUNCTION instead of jumping to it.  The generic approach does not support
702     varargs.  */
703
704 #define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
705   output_mi_thunk (FILE, THUNK_FNDECL, DELTA, FUNCTION)
706
707 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
708    flag.  The LOCAL_LABEL_PREFIX variable is used by dbxelf.h.  */
709
710 #define LOCAL_LABEL_PREFIX "."
711 #define USER_LABEL_PREFIX ""
712
713 /* svr4.h overrides ASM_OUTPUT_INTERNAL_LABEL.  */
714
715 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX)   \
716   asm_fprintf (FILE, "%L%s", PREFIX)
717
718 #define ASM_OUTPUT_LABEL(FILE,NAME)     \
719   (assemble_name (FILE, NAME), fputs (":\n", FILE))
720
721 /* This is how to output a command to make the user-level label named NAME
722    defined for reference from other files.  */
723
724 #define ASM_GLOBALIZE_LABEL(FILE,NAME)  \
725   do { fputs ("\t.globl ", FILE);       \
726        assemble_name (FILE, NAME); putc ('\n', FILE);} while (0)
727
728 /* This says how to output assembler code to declare an
729    uninitialized internal linkage data object.  Under SVR4,
730    the linker seems to want the alignment of data objects
731    to depend on their types.  We do exactly that here.  */
732
733 #define LOCAL_ASM_OP    "\t.local\t"
734
735 #define LCOMM_ASM_OP    "\t.lcomm\t"
736
737 /* Override elfos.h definition.  */
738 #undef  ASM_OUTPUT_ALIGNED_LOCAL
739 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
740 do {                                                                    \
741   if (rs6000_sdata != SDATA_NONE && (SIZE) > 0                          \
742       && (SIZE) <= g_switch_value)                                      \
743     {                                                                   \
744       sbss_section ();                                                  \
745       ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));      \
746       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
747       ASM_OUTPUT_SKIP (FILE, SIZE);                                     \
748       if (!flag_inhibit_size_directive && (SIZE) > 0)                   \
749         {                                                               \
750           fprintf (FILE, "%s", SIZE_ASM_OP);                            \
751           assemble_name (FILE, NAME);                                   \
752           fprintf (FILE, ",%d\n",  SIZE);                               \
753         }                                                               \
754     }                                                                   \
755   else                                                                  \
756     {                                                                   \
757       fprintf (FILE, "%s", LCOMM_ASM_OP);                               \
758       assemble_name ((FILE), (NAME));                                   \
759       fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT);    \
760     }                                                                   \
761 } while (0)
762
763 /* Describe how to emit uninitialized external linkage items.  */
764 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
765 do {                                                                    \
766   ASM_GLOBALIZE_LABEL (FILE, NAME);                                     \
767   ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);                   \
768 } while (0)
769
770 /* Switch  Recognition by gcc.c.  Add -G xx support.  */
771
772 /* Override svr4.h definition.  */
773 #undef  SWITCH_TAKES_ARG
774 #define SWITCH_TAKES_ARG(CHAR)                                          \
775   ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o'                      \
776    || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u'                   \
777    || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x'                   \
778    || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V'                   \
779    || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
780
781 /* Output .file.  */
782 /* Override elfos.h definition.  */
783 #undef  ASM_FILE_START
784 #define ASM_FILE_START(FILE)                                            \
785 do {                                                                    \
786   output_file_directive ((FILE), main_input_filename);                  \
787   rs6000_file_start (FILE, TARGET_CPU_DEFAULT);                         \
788 } while (0)
789
790
791 extern int fixuplabelno;
792
793 /* Handle constructors specially for -mrelocatable.  */
794 #define TARGET_ASM_CONSTRUCTOR  rs6000_elf_asm_out_constructor
795 #define TARGET_ASM_DESTRUCTOR   rs6000_elf_asm_out_destructor
796
797 /* This is the end of what might become sysv4.h.  */
798
799 /* Use DWARF 2 debugging information by default.  */
800 #undef  PREFERRED_DEBUGGING_TYPE
801 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
802
803 /* Historically we have also supported stabs debugging.  */
804 #define DBX_DEBUGGING_INFO
805
806 /* If we are referencing a function that is static or is known to be
807    in this file, make the SYMBOL_REF special.  We can use this to indicate
808    that we can branch to this function without emitting a no-op after the
809    call.  For real AIX calling sequences, we also replace the
810    function name with the real name (1 or 2 leading .'s), rather than
811    the function descriptor name.  This saves a lot of overriding code
812    to read the prefixes.  */
813
814 #undef  ENCODE_SECTION_INFO
815 #define ENCODE_SECTION_INFO(DECL, FIRST) \
816   rs6000_encode_section_info (DECL, FIRST)
817
818 /* The ELF version doesn't encode [DS] or whatever at the end of symbols.  */
819
820 #define RS6000_OUTPUT_BASENAME(FILE, NAME)      \
821     assemble_name (FILE, NAME)
822
823 /* This macro gets just the user-specified name
824    out of the string in a SYMBOL_REF.  Discard
825    a leading * or @.  */
826 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)                            \
827 do {                                                                    \
828   const char *_name = SYMBOL_NAME;                                      \
829   while (*_name == '*' || *_name == '@')                                \
830     _name++;                                                            \
831   (VAR) = _name;                                                        \
832 } while (0)
833
834 /* This is how to output a reference to a user-level label named NAME.
835    `assemble_name' uses this.  */
836
837 /* Override elfos.h definition.  */
838 #undef  ASM_OUTPUT_LABELREF
839 #define ASM_OUTPUT_LABELREF(FILE,NAME)          \
840 do {                                            \
841   const char *_name = NAME;                     \
842   if (*_name == '@')                            \
843     _name++;                                    \
844                                                 \
845   if (*_name == '*')                            \
846     fprintf (FILE, "%s", _name + 1);            \
847   else                                          \
848     asm_fprintf (FILE, "%U%s", _name);          \
849 } while (0)
850
851 /* But, to make this work, we have to output the stabs for the function
852    name *first*...  */
853
854 #define DBX_FUNCTION_FIRST
855
856 /* This is the end of what might become sysv4dbx.h.  */
857
858 #ifndef TARGET_VERSION
859 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
860 #endif
861 \f
862 #ifndef CPP_PREDEFINES
863 #define CPP_PREDEFINES \
864   "-DPPC -Dunix -D__svr4__ -Asystem=unix -Asystem=svr4 -Acpu=powerpc -Amachine=powerpc"
865 #endif
866
867 /* Pass various options to the assembler.  */
868 /* Override svr4.h definition.  */
869 #undef  ASM_SPEC
870 #define ASM_SPEC "%(asm_cpu) \
871 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
872 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
873 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
874 %{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
875 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian} \
876 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
877     %{mcall-freebsd: -mbig} \
878     %{mcall-i960-old: -mlittle} \
879     %{mcall-linux: -mbig} \
880     %{mcall-gnu: -mbig} \
881     %{mcall-netbsd: -mbig} \
882 }}}}"
883
884 #define CC1_ENDIAN_BIG_SPEC ""
885
886 #define CC1_ENDIAN_LITTLE_SPEC "\
887 %{!mstrict-align: %{!mno-strict-align: \
888     %{!mcall-i960-old: \
889         -mstrict-align \
890     } \
891 }}"
892
893 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
894
895 /* Pass -G xxx to the compiler and set correct endian mode.  */
896 #define CC1_SPEC "%{G*} \
897 %{mlittle: %(cc1_endian_little)} %{!mlittle: %{mlittle-endian: %(cc1_endian_little)}} \
898 %{mbig: %(cc1_endian_big)} %{!mbig: %{mbig-endian: %(cc1_endian_big)}} \
899 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
900     %{mcall-aixdesc: -mbig %(cc1_endian_big) } \
901     %{mcall-freebsd: -mbig %(cc1_endian_big) } \
902     %{mcall-i960-old: -mlittle %(cc1_endian_little) } \
903     %{mcall-linux: -mbig %(cc1_endian_big) } \
904     %{mcall-gnu: -mbig %(cc1_endian_big) } \
905     %{mcall-netbsd: -mbig %(cc1_endian_big) } \
906     %{!mcall-aixdesc: %{!mcall-freebsd: %{!mcall-i960-old: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: \
907             %(cc1_endian_default) \
908     }}}}}} \
909 }}}} \
910 %{mno-sdata: -msdata=none } \
911 %{meabi: %{!mcall-*: -mcall-sysv }} \
912 %{!meabi: %{!mno-eabi: \
913     %{mrelocatable: -meabi } \
914     %{mcall-freebsd: -mno-eabi } \
915     %{mcall-i960-old: -meabi } \
916     %{mcall-linux: -mno-eabi } \
917     %{mcall-gnu: -mno-eabi } \
918     %{mcall-netbsd: -mno-eabi }}} \
919 %{msdata: -msdata=default} \
920 %{mno-sdata: -msdata=none} \
921 %{profile: -p}"
922
923 /* Don't put -Y P,<path> for cross compilers.  */
924 #ifndef CROSS_COMPILE
925 #define LINK_PATH_SPEC "\
926 %{!R*:%{L*:-R %*}} \
927 %{!nostdlib: %{!YP,*: \
928     %{compat-bsd: \
929         %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
930         %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
931         %{!R*: %{!L*: -R /usr/ucblib}} \
932     %{!compat-bsd: \
933         %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
934         %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
935
936 #else
937 #define LINK_PATH_SPEC ""
938 #endif
939
940 /* Default starting address if specified.  */
941 #define LINK_START_SPEC "\
942 %{mads: %(link_start_ads) } \
943 %{myellowknife: %(link_start_yellowknife) } \
944 %{mmvme: %(link_start_mvme) } \
945 %{msim: %(link_start_sim) } \
946 %{mwindiss: %(link_start_windiss) } \
947 %{mcall-freebsd: %(link_start_freebsd) } \
948 %{mcall-linux: %(link_start_linux) } \
949 %{mcall-gnu: %(link_start_gnu) } \
950 %{mcall-netbsd: %(link_start_netbsd) } \
951 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
952          %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd:   \
953          %{!mcall-freebsd: %(link_start_default) }}}}}}}}}"
954
955 #define LINK_START_DEFAULT_SPEC ""
956
957 /* Override svr4.h definition.  */
958 #undef  LINK_SPEC
959 #define LINK_SPEC "\
960 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
961 %{YP,*} %{R*} \
962 %{Qy:} %{!Qn:-Qy} \
963 %(link_shlib) \
964 %{!Wl,-T*: %{!T*: %(link_start) }} \
965 %(link_target) \
966 %(link_os)"
967
968 /* For now, turn off shared libraries by default.  */
969 #ifndef SHARED_LIB_SUPPORT
970 #define NO_SHARED_LIB_SUPPORT
971 #endif
972
973 #ifndef NO_SHARED_LIB_SUPPORT
974 /* Shared libraries are default.  */
975 #define LINK_SHLIB_SPEC "\
976 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
977 %{mshlib: } \
978 %{static:-dn -Bstatic} \
979 %{shared:-G -dy -z text} \
980 %{symbolic:-Bsymbolic -G -dy -z text}"
981
982 #else
983 /* Shared libraries are not default.  */
984 #define LINK_SHLIB_SPEC "\
985 %{mshlib: %(link_path) } \
986 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
987 %{static: } \
988 %{shared:-G -dy -z text %(link_path) } \
989 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
990 #endif
991
992 /* Override the default target of the linker.  */
993 #define LINK_TARGET_SPEC "\
994 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
995 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
996     %{mcall-i960-old: --oformat elf32-powerpcle} \
997   }}}}"
998
999 /* Any specific OS flags.  */
1000 #define LINK_OS_SPEC "\
1001 %{mads: %(link_os_ads) } \
1002 %{myellowknife: %(link_os_yellowknife) } \
1003 %{mmvme: %(link_os_mvme) } \
1004 %{msim: %(link_os_sim) } \
1005 %{mwindiss: %(link_os_windiss) } \
1006 %{mcall-freebsd: %(link_os_freebsd) } \
1007 %{mcall-linux: %(link_os_linux) } \
1008 %{mcall-gnu: %(link_os_gnu) } \
1009 %{mcall-netbsd: %(link_os_netbsd) } \
1010 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1011          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1012          %{!mcall-netbsd: %(link_os_default) }}}}}}}}}"
1013
1014 #define LINK_OS_DEFAULT_SPEC ""
1015
1016 #define CPP_SYSV_SPEC \
1017 "%{mrelocatable*: -D_RELOCATABLE} \
1018 %{fpic: -D__PIC__=1 -D__pic__=1} \
1019 %{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}} \
1020 %{mlong-double-128: -D__LONG_DOUBLE_128__=1} \
1021 %{!mlong-double-64: %(cpp_longdouble_default)} \
1022 %{mcall-sysv: -D_CALL_SYSV} \
1023 %{mcall-aix: -D_CALL_AIX} %{mcall-aixdesc: -D_CALL_AIX -D_CALL_AIXDESC} \
1024 %{!mcall-sysv: %{!mcall-aix: %{!mcall-aixdesc: %(cpp_sysv_default) }}} \
1025 %{msoft-float: -D_SOFT_FLOAT} \
1026 %{!msoft-float: %{!mhard-float: \
1027     %{mcpu=401: -D_SOFT_FLOAT} \
1028     %{mcpu=403: -D_SOFT_FLOAT} \
1029     %{mcpu=405: -D_SOFT_FLOAT} \
1030     %{mcpu=ec603e: -D_SOFT_FLOAT} \
1031     %{mcpu=801: -D_SOFT_FLOAT} \
1032     %{mcpu=821: -D_SOFT_FLOAT} \
1033     %{mcpu=823: -D_SOFT_FLOAT} \
1034     %{mcpu=860: -D_SOFT_FLOAT} \
1035     %{!mcpu*: %(cpp_float_default) }}}"
1036
1037 /* Whether floating point is disabled by default.  */
1038 #define CPP_FLOAT_DEFAULT_SPEC ""
1039
1040 /* Whether 'long double' is 128 bits by default.  */
1041 #define CPP_LONGDOUBLE_DEFAULT_SPEC ""
1042
1043 #define CPP_SYSV_DEFAULT_SPEC "-D_CALL_SYSV"
1044
1045 #define CPP_ENDIAN_BIG_SPEC "-D_BIG_ENDIAN -D__BIG_ENDIAN__ -Amachine=bigendian"
1046
1047 #define CPP_ENDIAN_LITTLE_SPEC "-D_LITTLE_ENDIAN -D__LITTLE_ENDIAN__ -Amachine=littleendian"
1048
1049 #define CPP_ENDIAN_SPEC \
1050 "%{mlittle: %(cpp_endian_little) } \
1051 %{mlittle-endian: %(cpp_endian_little) } \
1052 %{mbig: %(cpp_endian_big) } \
1053 %{mbig-endian: %(cpp_endian_big) } \
1054 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
1055     %{mcall-freebsd: %(cpp_endian_big) } \
1056     %{mcall-linux: %(cpp_endian_big) } \
1057     %{mcall-gnu: %(cpp_endian_big) } \
1058     %{mcall-netbsd: %(cpp_endian_big) } \
1059     %{mcall-i960-old: %(cpp_endian_little) } \
1060     %{mcall-aixdesc:  %(cpp_endian_big) } \
1061     %{!mcall-linux: %{!mcall-gnu: %{!mcall-freebsd: %{!mcall-netbsd: %{!mcall-aixdesc: %(cpp_endian_default) }}}}}}}}}"
1062
1063 #define CPP_ENDIAN_DEFAULT_SPEC "%(cpp_endian_big)"
1064
1065 /* Override rs6000.h definition.  */
1066 #undef  CPP_SPEC
1067 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) %(cpp_endian) %(cpp_cpu) \
1068 %{mads: %(cpp_os_ads) } \
1069 %{myellowknife: %(cpp_os_yellowknife) } \
1070 %{mmvme: %(cpp_os_mvme) } \
1071 %{msim: %(cpp_os_sim) } \
1072 %{mwindiss: %(cpp_os_windiss) } \
1073 %{mcall-freebsd: %(cpp_os_freebsd) } \
1074 %{mcall-linux: %(cpp_os_linux) } \
1075 %{mcall-gnu: %(cpp_os_gnu) } \
1076 %{mcall-netbsd: %(cpp_os_netbsd) } \
1077 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1078          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1079          %{!mcall-netbsd: %(cpp_os_default) }}}}}}}}}"
1080
1081 #define CPP_OS_DEFAULT_SPEC ""
1082
1083 /* Override svr4.h definition.  */
1084 #undef  STARTFILE_SPEC
1085 #define STARTFILE_SPEC "\
1086 %{mads: %(startfile_ads) } \
1087 %{myellowknife: %(startfile_yellowknife) } \
1088 %{mmvme: %(startfile_mvme) } \
1089 %{msim: %(startfile_sim) } \
1090 %{mwindiss: %(startfile_windiss) } \
1091 %{mcall-freebsd: %(startfile_freebsd) } \
1092 %{mcall-linux: %(startfile_linux) } \
1093 %{mcall-gnu: %(startfile_gnu) } \
1094 %{mcall-netbsd: %(startfile_netbsd) } \
1095 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1096          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1097          %{!mcall-netbsd: %(startfile_default) }}}}}}}}}"
1098
1099 #define STARTFILE_DEFAULT_SPEC ""
1100
1101 /* Override svr4.h definition.  */
1102 #undef  LIB_SPEC
1103 #define LIB_SPEC "\
1104 %{mads: %(lib_ads) } \
1105 %{myellowknife: %(lib_yellowknife) } \
1106 %{mmvme: %(lib_mvme) } \
1107 %{msim: %(lib_sim) } \
1108 %{mwindiss: %(lib_windiss) } \
1109 %{mcall-freebsd: %(lib_freebsd) } \
1110 %{mcall-linux: %(lib_linux) } \
1111 %{mcall-gnu: %(lib_gnu) } \
1112 %{mcall-netbsd: %(lib_netbsd) } \
1113 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1114          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1115          %{!mcall-netbsd: %(lib_default) }}}}}}}}}"
1116
1117 #define LIB_DEFAULT_SPEC ""
1118
1119 /* Override svr4.h definition.  */
1120 #undef  ENDFILE_SPEC
1121 #define ENDFILE_SPEC "\
1122 %{mads: crtsavres.o%s %(endfile_ads)} \
1123 %{myellowknife: crtsavres.o%s %(endfile_yellowknife)} \
1124 %{mmvme: crtsavres.o%s %(endfile_mvme)} \
1125 %{msim: crtsavres.o%s %(endfile_sim)} \
1126 %{mwindiss: %(endfile_windiss)} \
1127 %{mcall-freebsd: crtsavres.o%s %(endfile_freebsd) } \
1128 %{mcall-linux: crtsavres.o%s %(endfile_linux) } \
1129 %{mcall-gnu: crtsavres.o%s %(endfile_gnu) } \
1130 %{mcall-netbsd: crtsavres.o%s %(endfile_netbsd) } \
1131 %{mvxworks: crtsavres.o%s %(endfile_vxworks) } \
1132 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1133          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1134          %{!mcall-netbsd: %{!mvxworks: %(crtsavres_default) \
1135                                        %(endfile_default) }}}}}}}}}}"
1136
1137 #define CRTSAVRES_DEFAULT_SPEC "crtsavres.o%s"
1138
1139 #define ENDFILE_DEFAULT_SPEC ""
1140
1141 /* Motorola ADS support.  */
1142 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
1143
1144 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1145
1146 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
1147
1148 #define LINK_START_ADS_SPEC "-T ads.ld%s"
1149
1150 #define LINK_OS_ADS_SPEC ""
1151
1152 #define CPP_OS_ADS_SPEC ""
1153
1154 /* Motorola Yellowknife support.  */
1155 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
1156
1157 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1158
1159 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
1160
1161 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
1162
1163 #define LINK_OS_YELLOWKNIFE_SPEC ""
1164
1165 #define CPP_OS_YELLOWKNIFE_SPEC ""
1166
1167 /* Motorola MVME support.  */
1168 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
1169
1170 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1171
1172 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
1173
1174 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
1175
1176 #define LINK_OS_MVME_SPEC ""
1177
1178 #define CPP_OS_MVME_SPEC ""
1179
1180 /* PowerPC simulator based on netbsd system calls support.  */
1181 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
1182
1183 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
1184
1185 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
1186
1187 #define LINK_START_SIM_SPEC ""
1188
1189 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1190
1191 #define CPP_OS_SIM_SPEC ""
1192
1193 /* FreeBSD support.  */
1194
1195 #define CPP_OS_FREEBSD_SPEC     "\
1196   -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1197   -Acpu=powerpc -Amachine=powerpc"
1198
1199 #define STARTFILE_FREEBSD_SPEC  FBSD_STARTFILE_SPEC
1200 #define ENDFILE_FREEBSD_SPEC    FBSD_ENDFILE_SPEC
1201 #define LIB_FREEBSD_SPEC        FBSD_LIB_SPEC
1202 #define LINK_START_FREEBSD_SPEC ""
1203
1204 #define LINK_OS_FREEBSD_SPEC "\
1205   %{symbolic:-Bsymbolic}"
1206
1207 /* GNU/Linux support.  */
1208 #ifdef USE_GNULIBC_1
1209 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1210 %{!mnewlib: -lc }"
1211 #else
1212 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1213 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1214 %{profile:-lc_p} %{!profile:-lc}}}"
1215 #endif
1216
1217 #ifdef USE_GNULIBC_1
1218 #define STARTFILE_LINUX_SPEC "\
1219 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1220 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1221 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1222 #else
1223 #define STARTFILE_LINUX_SPEC "\
1224 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1225 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1226 %{static:crtbeginT.o%s} \
1227 %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
1228 #endif
1229
1230 #define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1231 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1232
1233 #define LINK_START_LINUX_SPEC ""
1234
1235 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1236   %{rdynamic:-export-dynamic} \
1237   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1238
1239 #if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
1240 # define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
1241 #endif
1242
1243 #ifdef USE_GNULIBC_1
1244 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1245 %{!undef:                                                         \
1246   %{!ansi:                                                        \
1247     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                   \
1248     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}               \
1249 -Asystem=unix -Asystem=posix"
1250 #else
1251 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1252 %{!undef:                                                         \
1253   %{!ansi:                                                        \
1254     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                   \
1255     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}               \
1256 -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1257 #endif
1258
1259 /* GNU/Hurd support.  */
1260 #define LIB_GNU_SPEC "%{mnewlib: --start-group -lgnu -lc --end-group } \
1261 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1262 %{profile:-lc_p} %{!profile:-lc}}}"
1263
1264 #define STARTFILE_GNU_SPEC "\
1265 %{!shared: %{!static: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}} \
1266 %{static: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
1267 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1268 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1269
1270 #define ENDFILE_GNU_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1271 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1272
1273 #define LINK_START_GNU_SPEC ""
1274
1275 #define LINK_OS_GNU_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1276   %{rdynamic:-export-dynamic} \
1277   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1278
1279 #define CPP_OS_GNU_SPEC "-D__unix__ -D__gnu_hurd__ -D__GNU__    \
1280 %{!undef:                                                       \
1281   %{!ansi: -Dunix -D__unix}}                                    \
1282 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1283
1284 /* NetBSD support.  */
1285 #define LIB_NETBSD_SPEC "\
1286 %{profile:-lgmon -lc_p} %{!profile:-lc}"
1287
1288 #define STARTFILE_NETBSD_SPEC "\
1289 ncrti.o%s crt0.o%s \
1290 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1291
1292 #define ENDFILE_NETBSD_SPEC "\
1293 %{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1294 ncrtn.o%s"
1295
1296 #define LINK_START_NETBSD_SPEC "\
1297 "
1298
1299 #define LINK_OS_NETBSD_SPEC "\
1300 %{!shared: %{!static: \
1301   %{rdynamic:-export-dynamic} \
1302   %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
1303
1304 #define CPP_OS_NETBSD_SPEC "\
1305 -D__powerpc__ -D__NetBSD__ -D__ELF__ -D__KPRINTF_ATTRIBUTE__"
1306
1307 /* VxWorks support.  */
1308 /* VxWorks does all the library stuff itself.  */
1309 #define LIB_VXWORKS_SPEC ""
1310
1311 /* VxWorks provides the functionality of crt0.o and friends itself.  */
1312
1313 #define STARTFILE_VXWORKS_SPEC ""
1314
1315 #define ENDFILE_VXWORKS_SPEC ""
1316
1317 /* Because it uses ld -r, vxworks has no start/end files, nor starting
1318    address.  */
1319
1320 #define LINK_START_VXWORKS_SPEC ""
1321
1322 #define LINK_OS_VXWORKS_SPEC "-r"
1323
1324 #define CPP_OS_VXWORKS_SPEC "\
1325 -DCPU_FAMILY=PPC \
1326 %{!mcpu*: \
1327   %{mpowerpc*: -DCPU=PPC603} \
1328   %{!mno-powerpc: -DCPU=PPC603}} \
1329 %{mcpu=powerpc: -DCPU=PPC603} \
1330 %{mcpu=401: -DCPU=PPC403} \
1331 %{mcpu=403: -DCPU=PPC403} \
1332 %{mcpu=405: -DCPU=PPC405} \
1333 %{mcpu=601: -DCPU=PPC601} \
1334 %{mcpu=602: -DCPU=PPC603} \
1335 %{mcpu=603: -DCPU=PPC603} \
1336 %{mcpu=603e: -DCPU=PPC603} \
1337 %{mcpu=ec603e: -DCPU=PPC603} \
1338 %{mcpu=604: -DCPU=PPC604} \
1339 %{mcpu=604e: -DCPU=PPC604} \
1340 %{mcpu=620: -DCPU=PPC604} \
1341 %{mcpu=740: -DCPU=PPC603} \
1342 %{mcpu=7450: -DCPU=PPC603} \
1343 %{mcpu=750: -DCPU=PPC603} \
1344 %{mcpu=801: -DCPU=PPC603} \
1345 %{mcpu=821: -DCPU=PPC603} \
1346 %{mcpu=823: -DCPU=PPC603} \
1347 %{mcpu=860: -DCPU=PPC603}"
1348
1349 /* WindISS support.  */
1350
1351 #define LIB_WINDISS_SPEC "--start-group -li -lcfp -lwindiss -lram -limpl -limpfp --end-group"
1352
1353 #define CPP_OS_WINDISS_SPEC "\
1354 -D__rtasim \
1355 -D__EABI__ \
1356 -D__ppc \
1357 %{!msoft-float: -D__hardfp} \
1358 "
1359
1360 #define STARTFILE_WINDISS_SPEC "crt0.o%s crtbegin.o%s"
1361
1362 #define ENDFILE_WINDISS_SPEC "crtend.o%s"
1363
1364 #define LINK_START_WINDISS_SPEC ""
1365
1366 #define LINK_OS_WINDISS_SPEC ""
1367
1368 /* Define any extra SPECS that the compiler needs to generate.  */
1369 /* Override rs6000.h definition.  */
1370 #undef  SUBTARGET_EXTRA_SPECS
1371 #define SUBTARGET_EXTRA_SPECS                                           \
1372   { "cpp_sysv",                 CPP_SYSV_SPEC },                        \
1373   { "cpp_sysv_default",         CPP_SYSV_DEFAULT_SPEC },                \
1374   { "cpp_endian_default",       CPP_ENDIAN_DEFAULT_SPEC },              \
1375   { "cpp_endian",               CPP_ENDIAN_SPEC },                      \
1376   { "crtsavres_default",        CRTSAVRES_DEFAULT_SPEC },              \
1377   { "lib_ads",                  LIB_ADS_SPEC },                         \
1378   { "lib_yellowknife",          LIB_YELLOWKNIFE_SPEC },                 \
1379   { "lib_mvme",                 LIB_MVME_SPEC },                        \
1380   { "lib_sim",                  LIB_SIM_SPEC },                         \
1381   { "lib_freebsd",              LIB_FREEBSD_SPEC },                     \
1382   { "lib_gnu",                  LIB_GNU_SPEC },                         \
1383   { "lib_linux",                LIB_LINUX_SPEC },                       \
1384   { "lib_netbsd",               LIB_NETBSD_SPEC },                      \
1385   { "lib_vxworks",              LIB_VXWORKS_SPEC },                     \
1386   { "lib_windiss",              LIB_WINDISS_SPEC },                     \
1387   { "lib_default",              LIB_DEFAULT_SPEC },                     \
1388   { "startfile_ads",            STARTFILE_ADS_SPEC },                   \
1389   { "startfile_yellowknife",    STARTFILE_YELLOWKNIFE_SPEC },           \
1390   { "startfile_mvme",           STARTFILE_MVME_SPEC },                  \
1391   { "startfile_sim",            STARTFILE_SIM_SPEC },                   \
1392   { "startfile_freebsd",        STARTFILE_FREEBSD_SPEC },               \
1393   { "startfile_gnu",            STARTFILE_GNU_SPEC },                   \
1394   { "startfile_linux",          STARTFILE_LINUX_SPEC },                 \
1395   { "startfile_netbsd",         STARTFILE_NETBSD_SPEC },                \
1396   { "startfile_vxworks",        STARTFILE_VXWORKS_SPEC },               \
1397   { "startfile_windiss",        STARTFILE_WINDISS_SPEC },               \
1398   { "startfile_default",        STARTFILE_DEFAULT_SPEC },               \
1399   { "endfile_ads",              ENDFILE_ADS_SPEC },                     \
1400   { "endfile_yellowknife",      ENDFILE_YELLOWKNIFE_SPEC },             \
1401   { "endfile_mvme",             ENDFILE_MVME_SPEC },                    \
1402   { "endfile_sim",              ENDFILE_SIM_SPEC },                     \
1403   { "endfile_freebsd",          ENDFILE_FREEBSD_SPEC },                 \
1404   { "endfile_gnu",              ENDFILE_GNU_SPEC },                     \
1405   { "endfile_linux",            ENDFILE_LINUX_SPEC },                   \
1406   { "endfile_netbsd",           ENDFILE_NETBSD_SPEC },                  \
1407   { "endfile_vxworks",          ENDFILE_VXWORKS_SPEC },                 \
1408   { "endfile_windiss",          ENDFILE_WINDISS_SPEC },                 \
1409   { "endfile_default",          ENDFILE_DEFAULT_SPEC },                 \
1410   { "link_path",                LINK_PATH_SPEC },                       \
1411   { "link_shlib",               LINK_SHLIB_SPEC },                      \
1412   { "link_target",              LINK_TARGET_SPEC },                     \
1413   { "link_start",               LINK_START_SPEC },                      \
1414   { "link_start_ads",           LINK_START_ADS_SPEC },                  \
1415   { "link_start_yellowknife",   LINK_START_YELLOWKNIFE_SPEC },          \
1416   { "link_start_mvme",          LINK_START_MVME_SPEC },                 \
1417   { "link_start_sim",           LINK_START_SIM_SPEC },                  \
1418   { "link_start_freebsd",       LINK_START_FREEBSD_SPEC },              \
1419   { "link_start_gnu",           LINK_START_GNU_SPEC },                  \
1420   { "link_start_linux",         LINK_START_LINUX_SPEC },                \
1421   { "link_start_netbsd",        LINK_START_NETBSD_SPEC },               \
1422   { "link_start_vxworks",       LINK_START_VXWORKS_SPEC },              \
1423   { "link_start_windiss",       LINK_START_WINDISS_SPEC },              \
1424   { "link_start_default",       LINK_START_DEFAULT_SPEC },              \
1425   { "link_os",                  LINK_OS_SPEC },                         \
1426   { "link_os_ads",              LINK_OS_ADS_SPEC },                     \
1427   { "link_os_yellowknife",      LINK_OS_YELLOWKNIFE_SPEC },             \
1428   { "link_os_mvme",             LINK_OS_MVME_SPEC },                    \
1429   { "link_os_sim",              LINK_OS_SIM_SPEC },                     \
1430   { "link_os_freebsd",          LINK_OS_FREEBSD_SPEC },                 \
1431   { "link_os_linux",            LINK_OS_LINUX_SPEC },                   \
1432   { "link_os_gnu",              LINK_OS_GNU_SPEC },                     \
1433   { "link_os_netbsd",           LINK_OS_NETBSD_SPEC },                  \
1434   { "link_os_vxworks",          LINK_OS_VXWORKS_SPEC },                 \
1435   { "link_os_windiss",          LINK_OS_WINDISS_SPEC },                 \
1436   { "link_os_default",          LINK_OS_DEFAULT_SPEC },                 \
1437   { "cc1_endian_big",           CC1_ENDIAN_BIG_SPEC },                  \
1438   { "cc1_endian_little",        CC1_ENDIAN_LITTLE_SPEC },               \
1439   { "cc1_endian_default",       CC1_ENDIAN_DEFAULT_SPEC },              \
1440   { "cpp_endian_big",           CPP_ENDIAN_BIG_SPEC },                  \
1441   { "cpp_endian_little",        CPP_ENDIAN_LITTLE_SPEC },               \
1442   { "cpp_float_default",        CPP_FLOAT_DEFAULT_SPEC },               \
1443   { "cpp_longdouble_default",   CPP_LONGDOUBLE_DEFAULT_SPEC },          \
1444   { "cpp_os_ads",               CPP_OS_ADS_SPEC },                      \
1445   { "cpp_os_yellowknife",       CPP_OS_YELLOWKNIFE_SPEC },              \
1446   { "cpp_os_mvme",              CPP_OS_MVME_SPEC },                     \
1447   { "cpp_os_sim",               CPP_OS_SIM_SPEC },                      \
1448   { "cpp_os_freebsd",           CPP_OS_FREEBSD_SPEC },                  \
1449   { "cpp_os_gnu",               CPP_OS_GNU_SPEC },                      \
1450   { "cpp_os_linux",             CPP_OS_LINUX_SPEC },                    \
1451   { "cpp_os_netbsd",            CPP_OS_NETBSD_SPEC },                   \
1452   { "cpp_os_vxworks",           CPP_OS_VXWORKS_SPEC },                  \
1453   { "cpp_os_windiss",           CPP_OS_WINDISS_SPEC },                  \
1454   { "cpp_os_default",           CPP_OS_DEFAULT_SPEC },
1455
1456 /* Define this macro as a C expression for the initializer of an
1457    array of string to tell the driver program which options are
1458    defaults for this target and thus do not need to be handled
1459    specially when using `MULTILIB_OPTIONS'.
1460
1461    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1462    the target makefile fragment or if none of the options listed in
1463    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
1464
1465 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1466
1467 /* Define this macro if the code for function profiling should come
1468    before the function prologue.  Normally, the profiling code comes
1469    after.  */
1470 #define PROFILE_BEFORE_PROLOGUE 1
1471
1472 /* Function name to call to do profiling.  */
1473 #define RS6000_MCOUNT "_mcount"
1474
1475 /* Define this macro (to a value of 1) if you want to support the
1476    Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1477    pack(pop)'.  The pack(push,<n>) pragma specifies the maximum
1478    alignment (in bytes) of fields within a structure, in much the
1479    same way as the __aligned__' and __packed__' __attribute__'s
1480    do.  A pack value of zero resets the behaviour to the default.
1481    Successive invocations of this pragma cause the previous values to
1482    be stacked, so that invocations of #pragma pack(pop)' will return
1483    to the previous value.  */
1484
1485 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1486
1487 /* Define library calls for quad FP operations.  These are all part of the
1488    PowerPC 32bit ABI.  */
1489 #define ADDTF3_LIBCALL "_q_add"
1490 #define DIVTF3_LIBCALL "_q_div"
1491 #define EXTENDDFTF2_LIBCALL "_q_dtoq"
1492 #define EQTF2_LIBCALL "_q_feq"
1493 #define GETF2_LIBCALL "_q_fge"
1494 #define GTTF2_LIBCALL "_q_fgt"
1495 #define LETF2_LIBCALL "_q_fle"
1496 #define LTTF2_LIBCALL "_q_flt"
1497 #define NETF2_LIBCALL "_q_fne"
1498 #define FLOATSITF2_LIBCALL "_q_itoq"
1499 #define MULTF3_LIBCALL "_q_mul"
1500 #define NEGTF2_LIBCALL "_q_neg"
1501 #define TRUNCTFDF2_LIBCALL "_q_qtod"
1502 #define FIX_TRUNCTFSI2_LIBCALL "_q_qtoi"
1503 #define TRUNCTFSF2_LIBCALL "_q_qtos"
1504 #define FIXUNS_TRUNCTFSI2_LIBCALL "_q_qtou"
1505 #define SQRTTF_LIBCALL "_q_sqrt"
1506 #define EXTENDSFTF2_LIBCALL "_q_stoq"
1507 #define SUBTF3_LIBCALL "_q_sub"
1508 #define FLOATUNSSITF2_LIBCALL "_q_utoq"
1509
1510 #define INIT_TARGET_OPTABS                                              \
1511   do {                                                                  \
1512     if (TARGET_HARD_FLOAT)                                              \
1513       {                                                                 \
1514         add_optab->handlers[(int) TFmode].libfunc                       \
1515           = init_one_libfunc (ADDTF3_LIBCALL);                          \
1516         sub_optab->handlers[(int) TFmode].libfunc                       \
1517           = init_one_libfunc (SUBTF3_LIBCALL);                          \
1518         neg_optab->handlers[(int) TFmode].libfunc                       \
1519           = init_one_libfunc (NEGTF2_LIBCALL);                          \
1520         smul_optab->handlers[(int) TFmode].libfunc                      \
1521           = init_one_libfunc (MULTF3_LIBCALL);                          \
1522         sdiv_optab->handlers[(int) TFmode].libfunc                      \
1523           = init_one_libfunc (DIVTF3_LIBCALL);                          \
1524         eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL);               \
1525         netf2_libfunc = init_one_libfunc (NETF2_LIBCALL);               \
1526         gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL);               \
1527         getf2_libfunc = init_one_libfunc (GETF2_LIBCALL);               \
1528         lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL);               \
1529         letf2_libfunc = init_one_libfunc (LETF2_LIBCALL);               \
1530         trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL);     \
1531         trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL);     \
1532         extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL);   \
1533         extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL);   \
1534         floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL);      \
1535         fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL);    \
1536         fixunstfsi_libfunc                                              \
1537           = init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL);               \
1538         if (TARGET_PPC_GPOPT || TARGET_POWER2)                          \
1539           sqrt_optab->handlers[(int) TFmode].libfunc                    \
1540             = init_one_libfunc (SQRTTF_LIBCALL);                        \
1541       }                                                                 \
1542   } while (0)
1543
1544 /* Select a format to encode pointers in exception handling data.  CODE
1545    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
1546    true if the symbol may be affected by dynamic relocations.  */
1547 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                            \
1548   ((flag_pic || TARGET_RELOCATABLE)                                          \
1549    ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1550    : DW_EH_PE_absptr)
1551
1552 #define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
1553
1554 #define DOUBLE_INT_ASM_OP "\t.quad\t"
1555
1556 /* Generate entries in .fixup for relocatable addresses.  */
1557 #define RELOCATABLE_NEEDS_FIXUP