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Gimplify VA_ARG_EXPR into simpler forms.
[pf3gnuchains/gcc-fork.git] / gcc / target-def.h
1 /* Default initializers for a generic GCC target.
2    Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the
6 Free Software Foundation; either version 2, or (at your option) any
7 later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17
18  In other words, you are welcome to use, share and improve this program.
19  You are forbidden to forbid anyone else to use, share and improve
20  what you give them.   Help stamp out software-hoarding!  */
21
22 /* See target.h for a description of what this file contains and how to
23    use it.
24
25    We want to have non-NULL default definitions of all hook functions,
26    even if they do nothing.  */
27
28 /* Note that if one of these macros must be defined in an OS .h file
29    rather than the .c file, then we need to wrap the default
30    definition in a #ifndef, since files include tm.h before this one.  */
31
32 /* Assembler output.  */
33 #define TARGET_ASM_OPEN_PAREN "("
34 #define TARGET_ASM_CLOSE_PAREN ")"
35 #define TARGET_ASM_BYTE_OP "\t.byte\t"
36
37 #define TARGET_ASM_ALIGNED_HI_OP "\t.short\t"
38 #define TARGET_ASM_ALIGNED_SI_OP "\t.long\t"
39 #define TARGET_ASM_ALIGNED_DI_OP NULL
40 #define TARGET_ASM_ALIGNED_TI_OP NULL
41
42 /* GAS and SYSV4 assemblers accept these.  */
43 #if defined (OBJECT_FORMAT_ELF)
44 #define TARGET_ASM_UNALIGNED_HI_OP "\t.2byte\t"
45 #define TARGET_ASM_UNALIGNED_SI_OP "\t.4byte\t"
46 #define TARGET_ASM_UNALIGNED_DI_OP "\t.8byte\t"
47 #define TARGET_ASM_UNALIGNED_TI_OP NULL
48 #else
49 #define TARGET_ASM_UNALIGNED_HI_OP NULL
50 #define TARGET_ASM_UNALIGNED_SI_OP NULL
51 #define TARGET_ASM_UNALIGNED_DI_OP NULL
52 #define TARGET_ASM_UNALIGNED_TI_OP NULL
53 #endif /* OBJECT_FORMAT_ELF */
54
55 #define TARGET_ASM_INTEGER default_assemble_integer
56
57 #ifndef TARGET_ASM_GLOBALIZE_LABEL
58 #define TARGET_ASM_GLOBALIZE_LABEL default_globalize_label
59 #endif
60
61 #ifndef TARGET_ASM_EMIT_UNWIND_LABEL
62 #define TARGET_ASM_EMIT_UNWIND_LABEL default_emit_unwind_label
63 #endif
64
65 #ifndef TARGET_ASM_INTERNAL_LABEL
66 #define TARGET_ASM_INTERNAL_LABEL default_internal_label
67 #endif
68
69 #ifndef TARGET_ASM_ASSEMBLE_VISIBILITY
70 #define TARGET_ASM_ASSEMBLE_VISIBILITY default_assemble_visibility
71 #endif
72
73 #define TARGET_ASM_FUNCTION_PROLOGUE default_function_pro_epilogue
74 #define TARGET_ASM_FUNCTION_EPILOGUE default_function_pro_epilogue
75 #define TARGET_ASM_FUNCTION_END_PROLOGUE no_asm_to_stream
76 #define TARGET_ASM_FUNCTION_BEGIN_EPILOGUE no_asm_to_stream
77
78 #ifndef TARGET_ASM_SELECT_SECTION
79 #define TARGET_ASM_SELECT_SECTION default_select_section
80 #endif
81
82 #ifndef TARGET_ASM_UNIQUE_SECTION
83 #define TARGET_ASM_UNIQUE_SECTION default_unique_section
84 #endif
85
86 #ifndef TARGET_ASM_SELECT_RTX_SECTION
87 #define TARGET_ASM_SELECT_RTX_SECTION default_select_rtx_section
88 #endif
89
90 #if !defined(TARGET_ASM_CONSTRUCTOR) && !defined(USE_COLLECT2)
91 # ifdef CTORS_SECTION_ASM_OP
92 #  define TARGET_ASM_CONSTRUCTOR default_ctor_section_asm_out_constructor
93 # else
94 #  ifdef TARGET_ASM_NAMED_SECTION
95 #   define TARGET_ASM_CONSTRUCTOR default_named_section_asm_out_constructor
96 #  else
97 #   define TARGET_ASM_CONSTRUCTOR default_stabs_asm_out_constructor
98 #  endif
99 # endif
100 #endif
101
102 #if !defined(TARGET_ASM_DESTRUCTOR) && !defined(USE_COLLECT2)
103 # ifdef DTORS_SECTION_ASM_OP
104 #  define TARGET_ASM_DESTRUCTOR default_dtor_section_asm_out_destructor
105 # else
106 #  ifdef TARGET_ASM_NAMED_SECTION
107 #   define TARGET_ASM_DESTRUCTOR default_named_section_asm_out_destructor
108 #  else
109 #   define TARGET_ASM_DESTRUCTOR default_stabs_asm_out_destructor
110 #  endif
111 # endif
112 #endif
113
114 #define TARGET_ASM_OUTPUT_MI_THUNK NULL
115 #define TARGET_ASM_CAN_OUTPUT_MI_THUNK hook_bool_tree_hwi_hwi_tree_false
116
117 #if defined(TARGET_ASM_CONSTRUCTOR) && defined(TARGET_ASM_DESTRUCTOR)
118 #define TARGET_HAVE_CTORS_DTORS true
119 #else
120 #define TARGET_HAVE_CTORS_DTORS false
121 #define TARGET_ASM_CONSTRUCTOR NULL
122 #define TARGET_ASM_DESTRUCTOR NULL
123 #endif
124
125 #ifdef TARGET_ASM_NAMED_SECTION
126 #define TARGET_HAVE_NAMED_SECTIONS true
127 #else
128 #define TARGET_ASM_NAMED_SECTION default_no_named_section
129 #define TARGET_HAVE_NAMED_SECTIONS false
130 #endif
131
132 #ifndef TARGET_HAVE_TLS
133 #define TARGET_HAVE_TLS false
134 #endif
135
136 #ifndef TARGET_HAVE_SRODATA_SECTION
137 #define TARGET_HAVE_SRODATA_SECTION false
138 #endif
139
140 #ifndef TARGET_TERMINATE_DW2_EH_FRAME_INFO
141 #ifdef EH_FRAME_SECTION_NAME
142 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
143 #else
144 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO true
145 #endif
146 #endif
147
148 #define TARGET_DWARF_REGISTER_SPAN hook_rtx_rtx_null
149
150 #ifndef TARGET_ASM_EXCEPTION_SECTION
151 #define TARGET_ASM_EXCEPTION_SECTION default_exception_section
152 #endif
153
154 #ifndef TARGET_ASM_EH_FRAME_SECTION
155 #define TARGET_ASM_EH_FRAME_SECTION default_eh_frame_section
156 #endif
157
158 #ifndef TARGET_ASM_FILE_START
159 #define TARGET_ASM_FILE_START default_file_start
160 #endif
161
162 #ifndef TARGET_ASM_FILE_END
163 #define TARGET_ASM_FILE_END hook_void_void
164 #endif
165
166 #ifndef TARGET_ASM_FILE_START_APP_OFF
167 #define TARGET_ASM_FILE_START_APP_OFF false
168 #endif
169
170 #ifndef TARGET_ASM_FILE_START_FILE_DIRECTIVE
171 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
172 #endif
173
174 #ifndef TARGET_ASM_EXTERNAL_LIBCALL
175 #define TARGET_ASM_EXTERNAL_LIBCALL default_external_libcall
176 #endif
177
178 #define TARGET_ASM_ALIGNED_INT_OP                               \
179                        {TARGET_ASM_ALIGNED_HI_OP,               \
180                         TARGET_ASM_ALIGNED_SI_OP,               \
181                         TARGET_ASM_ALIGNED_DI_OP,               \
182                         TARGET_ASM_ALIGNED_TI_OP}
183
184 #define TARGET_ASM_UNALIGNED_INT_OP                             \
185                        {TARGET_ASM_UNALIGNED_HI_OP,             \
186                         TARGET_ASM_UNALIGNED_SI_OP,             \
187                         TARGET_ASM_UNALIGNED_DI_OP,             \
188                         TARGET_ASM_UNALIGNED_TI_OP}
189
190 #define TARGET_ASM_OUT {TARGET_ASM_OPEN_PAREN,                  \
191                         TARGET_ASM_CLOSE_PAREN,                 \
192                         TARGET_ASM_BYTE_OP,                     \
193                         TARGET_ASM_ALIGNED_INT_OP,              \
194                         TARGET_ASM_UNALIGNED_INT_OP,            \
195                         TARGET_ASM_INTEGER,                     \
196                         TARGET_ASM_GLOBALIZE_LABEL,             \
197                         TARGET_ASM_EMIT_UNWIND_LABEL,           \
198                         TARGET_ASM_INTERNAL_LABEL,              \
199                         TARGET_ASM_ASSEMBLE_VISIBILITY,         \
200                         TARGET_ASM_FUNCTION_PROLOGUE,           \
201                         TARGET_ASM_FUNCTION_END_PROLOGUE,       \
202                         TARGET_ASM_FUNCTION_BEGIN_EPILOGUE,     \
203                         TARGET_ASM_FUNCTION_EPILOGUE,           \
204                         TARGET_ASM_NAMED_SECTION,               \
205                         TARGET_ASM_EXCEPTION_SECTION,           \
206                         TARGET_ASM_EH_FRAME_SECTION,            \
207                         TARGET_ASM_SELECT_SECTION,              \
208                         TARGET_ASM_SELECT_RTX_SECTION,          \
209                         TARGET_ASM_UNIQUE_SECTION,              \
210                         TARGET_ASM_CONSTRUCTOR,                 \
211                         TARGET_ASM_DESTRUCTOR,                  \
212                         TARGET_ASM_OUTPUT_MI_THUNK,             \
213                         TARGET_ASM_CAN_OUTPUT_MI_THUNK,         \
214                         TARGET_ASM_FILE_START,                  \
215                         TARGET_ASM_FILE_END,                    \
216                         TARGET_ASM_EXTERNAL_LIBCALL}
217
218 /* Scheduler hooks.  All of these default to null pointers, which
219    haifa-sched.c looks for and handles.  */
220 #define TARGET_SCHED_ADJUST_COST 0
221 #define TARGET_SCHED_ADJUST_PRIORITY 0
222 #define TARGET_SCHED_ISSUE_RATE 0
223 #define TARGET_SCHED_VARIABLE_ISSUE 0
224 #define TARGET_SCHED_INIT 0
225 #define TARGET_SCHED_FINISH 0
226 #define TARGET_SCHED_INIT_GLOBAL 0
227 #define TARGET_SCHED_FINISH_GLOBAL 0
228 #define TARGET_SCHED_REORDER 0
229 #define TARGET_SCHED_REORDER2 0
230 #define TARGET_SCHED_DEPENDENCIES_EVALUATION_HOOK 0
231 #define TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE 0
232 #define TARGET_SCHED_INIT_DFA_PRE_CYCLE_INSN 0
233 #define TARGET_SCHED_DFA_PRE_CYCLE_INSN 0
234 #define TARGET_SCHED_INIT_DFA_POST_CYCLE_INSN 0
235 #define TARGET_SCHED_DFA_POST_CYCLE_INSN 0
236 #define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD 0
237 #define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD 0
238 #define TARGET_SCHED_DFA_NEW_CYCLE 0
239 #define TARGET_SCHED_INIT_DFA_BUBBLES 0
240 #define TARGET_SCHED_DFA_BUBBLE 0
241 #define TARGET_SCHED_IS_COSTLY_DEPENDENCE 0
242
243 #define TARGET_SCHED                                            \
244   {TARGET_SCHED_ADJUST_COST,                                    \
245    TARGET_SCHED_ADJUST_PRIORITY,                                \
246    TARGET_SCHED_ISSUE_RATE,                                     \
247    TARGET_SCHED_VARIABLE_ISSUE,                                 \
248    TARGET_SCHED_INIT,                                           \
249    TARGET_SCHED_FINISH,                                         \
250    TARGET_SCHED_INIT_GLOBAL,                                    \
251    TARGET_SCHED_FINISH_GLOBAL,                                  \
252    TARGET_SCHED_REORDER,                                        \
253    TARGET_SCHED_REORDER2,                                       \
254    TARGET_SCHED_DEPENDENCIES_EVALUATION_HOOK,                   \
255    TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE,                     \
256    TARGET_SCHED_INIT_DFA_PRE_CYCLE_INSN,                        \
257    TARGET_SCHED_DFA_PRE_CYCLE_INSN,                             \
258    TARGET_SCHED_INIT_DFA_POST_CYCLE_INSN,                       \
259    TARGET_SCHED_DFA_POST_CYCLE_INSN,                            \
260    TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD,            \
261    TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD,      \
262    TARGET_SCHED_DFA_NEW_CYCLE,                                  \
263    TARGET_SCHED_INIT_DFA_BUBBLES,                               \
264    TARGET_SCHED_DFA_BUBBLE,                                     \
265    TARGET_SCHED_IS_COSTLY_DEPENDENCE}
266
267 /* In tree.c.  */
268 #define TARGET_MERGE_DECL_ATTRIBUTES merge_decl_attributes
269 #define TARGET_MERGE_TYPE_ATTRIBUTES merge_type_attributes
270 #define TARGET_ATTRIBUTE_TABLE NULL
271
272 /* In cse.c.  */
273 #define TARGET_ADDRESS_COST default_address_cost
274
275 /* In builtins.c.  */
276 #define TARGET_INIT_BUILTINS hook_void_void
277 #define TARGET_EXPAND_BUILTIN default_expand_builtin
278
279 /* In varasm.c.  */
280 #ifndef TARGET_SECTION_TYPE_FLAGS
281 #define TARGET_SECTION_TYPE_FLAGS default_section_type_flags
282 #endif
283
284 #ifndef TARGET_STRIP_NAME_ENCODING
285 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
286 #endif
287
288 #ifndef TARGET_BINDS_LOCAL_P
289 #define TARGET_BINDS_LOCAL_P default_binds_local_p
290 #endif
291
292 #ifndef TARGET_VALID_POINTER_MODE
293 #define TARGET_VALID_POINTER_MODE default_valid_pointer_mode
294 #endif
295
296 #ifndef TARGET_VECTOR_OPAQUE_P
297 #define TARGET_VECTOR_OPAQUE_P hook_bool_tree_false
298 #endif
299
300 /* In hook.c.  */
301 #define TARGET_CANNOT_MODIFY_JUMPS_P hook_bool_void_false
302 #define TARGET_BRANCH_TARGET_REGISTER_CLASS hook_int_void_no_regs
303 #define TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED hook_bool_bool_false
304 #define TARGET_CANNOT_FORCE_CONST_MEM hook_bool_rtx_false
305 #define TARGET_CANNOT_COPY_INSN_P NULL
306 #define TARGET_DELEGITIMIZE_ADDRESS hook_rtx_rtx_identity
307 #define TARGET_FUNCTION_OK_FOR_SIBCALL hook_bool_tree_tree_false
308 #define TARGET_COMP_TYPE_ATTRIBUTES hook_int_tree_tree_1
309 #define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES hook_void_tree
310 #define TARGET_INSERT_ATTRIBUTES hook_void_tree_treeptr
311 #define TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P hook_bool_tree_false
312 #define TARGET_MS_BITFIELD_LAYOUT_P hook_bool_tree_false
313 #define TARGET_ALIGN_ANON_BITFIELD hook_bool_void_false
314 #define TARGET_RTX_COSTS hook_bool_rtx_int_int_intp_false
315 #define TARGET_MANGLE_FUNDAMENTAL_TYPE hook_constcharptr_tree_null
316
317 #ifndef TARGET_INIT_LIBFUNCS
318 #define TARGET_INIT_LIBFUNCS hook_void_void
319 #endif
320
321 #ifndef TARGET_IN_SMALL_DATA_P
322 #define TARGET_IN_SMALL_DATA_P hook_bool_tree_false
323 #endif
324
325 #ifndef TARGET_ENCODE_SECTION_INFO
326 #define TARGET_ENCODE_SECTION_INFO default_encode_section_info
327 #endif
328
329 #define TARGET_FIXED_CONDITION_CODE_REGS hook_bool_uintp_uintp_false
330
331 #define TARGET_CC_MODES_COMPATIBLE default_cc_modes_compatible
332
333 #define TARGET_MACHINE_DEPENDENT_REORG 0
334
335 #define TARGET_BUILD_BUILTIN_VA_LIST std_build_builtin_va_list
336
337 #define TARGET_GET_PCH_VALIDITY default_get_pch_validity
338 #define TARGET_PCH_VALID_P default_pch_valid_p
339
340 #define TARGET_DEFAULT_SHORT_ENUMS hook_bool_void_false
341
342 #define TARGET_BUILTIN_SETJMP_FRAME_VALUE default_builtin_setjmp_frame_value
343
344 #define TARGET_MD_ASM_CLOBBERS hook_tree_tree_identity
345
346 #define TARGET_PROMOTE_FUNCTION_ARGS hook_bool_tree_false
347 #define TARGET_PROMOTE_FUNCTION_RETURN hook_bool_tree_false
348 #define TARGET_PROMOTE_PROTOTYPES hook_bool_tree_false
349
350 #define TARGET_STRUCT_VALUE_RTX hook_rtx_tree_int_null
351 #define TARGET_RETURN_IN_MEMORY default_return_in_memory
352 #define TARGET_RETURN_IN_MSB hook_bool_tree_false
353
354 #define TARGET_EXPAND_BUILTIN_SAVEREGS default_expand_builtin_saveregs
355 #define TARGET_SETUP_INCOMING_VARARGS default_setup_incoming_varargs
356 #define TARGET_STRICT_ARGUMENT_NAMING hook_bool_CUMULATIVE_ARGS_false
357 #define TARGET_PRETEND_OUTGOING_VARARGS_NAMED \
358   default_pretend_outgoing_varargs_named
359 #define TARGET_SPLIT_COMPLEX_ARG NULL
360
361 #ifdef EXPAND_BUILTIN_VA_ARG
362 /* If there's a target-specific va_arg expander, there needs to be a
363    target-specific gimplifier.  */
364 #define TARGET_GIMPLIFY_VA_ARG_EXPR NULL
365 #else
366 #define TARGET_GIMPLIFY_VA_ARG_EXPR std_gimplify_va_arg_expr
367 #endif
368
369 #define TARGET_CALLS {                                          \
370    TARGET_PROMOTE_FUNCTION_ARGS,                                \
371    TARGET_PROMOTE_FUNCTION_RETURN,                              \
372    TARGET_PROMOTE_PROTOTYPES,                                   \
373    TARGET_STRUCT_VALUE_RTX,                                     \
374    TARGET_RETURN_IN_MEMORY,                                     \
375    TARGET_RETURN_IN_MSB,                                        \
376    TARGET_EXPAND_BUILTIN_SAVEREGS,                              \
377    TARGET_SETUP_INCOMING_VARARGS,                               \
378    TARGET_STRICT_ARGUMENT_NAMING,                               \
379    TARGET_PRETEND_OUTGOING_VARARGS_NAMED,                       \
380    TARGET_SPLIT_COMPLEX_ARG,                                    \
381    TARGET_GIMPLIFY_VA_ARG_EXPR,                                 \
382    }
383
384 /* The whole shebang.  */
385 #define TARGET_INITIALIZER                      \
386 {                                               \
387   TARGET_ASM_OUT,                               \
388   TARGET_SCHED,                                 \
389   TARGET_MERGE_DECL_ATTRIBUTES,                 \
390   TARGET_MERGE_TYPE_ATTRIBUTES,                 \
391   TARGET_ATTRIBUTE_TABLE,                       \
392   TARGET_COMP_TYPE_ATTRIBUTES,                  \
393   TARGET_SET_DEFAULT_TYPE_ATTRIBUTES,           \
394   TARGET_INSERT_ATTRIBUTES,                     \
395   TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P,        \
396   TARGET_MS_BITFIELD_LAYOUT_P,                  \
397   TARGET_ALIGN_ANON_BITFIELD,                   \
398   TARGET_INIT_BUILTINS,                         \
399   TARGET_EXPAND_BUILTIN,                        \
400   TARGET_MANGLE_FUNDAMENTAL_TYPE,               \
401   TARGET_INIT_LIBFUNCS,                         \
402   TARGET_SECTION_TYPE_FLAGS,                    \
403   TARGET_CANNOT_MODIFY_JUMPS_P,                 \
404   TARGET_BRANCH_TARGET_REGISTER_CLASS,          \
405   TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED,   \
406   TARGET_CANNOT_FORCE_CONST_MEM,                \
407   TARGET_CANNOT_COPY_INSN_P,                    \
408   TARGET_DELEGITIMIZE_ADDRESS,                  \
409   TARGET_FUNCTION_OK_FOR_SIBCALL,               \
410   TARGET_IN_SMALL_DATA_P,                       \
411   TARGET_BINDS_LOCAL_P,                         \
412   TARGET_ENCODE_SECTION_INFO,                   \
413   TARGET_STRIP_NAME_ENCODING,                   \
414   TARGET_VALID_POINTER_MODE,                    \
415   TARGET_VECTOR_OPAQUE_P,                       \
416   TARGET_RTX_COSTS,                             \
417   TARGET_ADDRESS_COST,                          \
418   TARGET_DWARF_REGISTER_SPAN,                   \
419   TARGET_FIXED_CONDITION_CODE_REGS,             \
420   TARGET_CC_MODES_COMPATIBLE,                   \
421   TARGET_MACHINE_DEPENDENT_REORG,               \
422   TARGET_BUILD_BUILTIN_VA_LIST,                 \
423   TARGET_GET_PCH_VALIDITY,                      \
424   TARGET_PCH_VALID_P,                           \
425   TARGET_DEFAULT_SHORT_ENUMS,                   \
426   TARGET_BUILTIN_SETJMP_FRAME_VALUE,            \
427   TARGET_MD_ASM_CLOBBERS,                       \
428   TARGET_CALLS,                                 \
429   TARGET_HAVE_NAMED_SECTIONS,                   \
430   TARGET_HAVE_CTORS_DTORS,                      \
431   TARGET_HAVE_TLS,                              \
432   TARGET_HAVE_SRODATA_SECTION,                  \
433   TARGET_TERMINATE_DW2_EH_FRAME_INFO,           \
434   TARGET_ASM_FILE_START_APP_OFF,                \
435   TARGET_ASM_FILE_START_FILE_DIRECTIVE,         \
436 }
437
438 #include "hooks.h"
439 #include "targhooks.h"