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[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 #ifndef TARGET_ASM_INTERNAL_LABEL
61 #define TARGET_ASM_INTERNAL_LABEL default_internal_label
62 #endif
63
64 #ifndef TARGET_ASM_ASSEMBLE_VISIBILITY
65 #define TARGET_ASM_ASSEMBLE_VISIBILITY default_assemble_visibility
66 #endif
67
68 #define TARGET_ASM_FUNCTION_PROLOGUE default_function_pro_epilogue
69 #define TARGET_ASM_FUNCTION_EPILOGUE default_function_pro_epilogue
70 #define TARGET_ASM_FUNCTION_END_PROLOGUE no_asm_to_stream
71 #define TARGET_ASM_FUNCTION_BEGIN_EPILOGUE no_asm_to_stream
72
73 #ifndef TARGET_ASM_SELECT_SECTION
74 #define TARGET_ASM_SELECT_SECTION default_select_section
75 #endif
76
77 #ifndef TARGET_ASM_UNIQUE_SECTION
78 #define TARGET_ASM_UNIQUE_SECTION default_unique_section
79 #endif
80
81 #ifndef TARGET_ASM_SELECT_RTX_SECTION
82 #define TARGET_ASM_SELECT_RTX_SECTION default_select_rtx_section
83 #endif
84
85 #if !defined(TARGET_ASM_CONSTRUCTOR) && !defined(USE_COLLECT2)
86 # ifdef CTORS_SECTION_ASM_OP
87 #  define TARGET_ASM_CONSTRUCTOR default_ctor_section_asm_out_constructor
88 # else
89 #  ifdef TARGET_ASM_NAMED_SECTION
90 #   define TARGET_ASM_CONSTRUCTOR default_named_section_asm_out_constructor
91 #  else
92 #   define TARGET_ASM_CONSTRUCTOR default_stabs_asm_out_constructor
93 #  endif
94 # endif
95 #endif
96
97 #if !defined(TARGET_ASM_DESTRUCTOR) && !defined(USE_COLLECT2)
98 # ifdef DTORS_SECTION_ASM_OP
99 #  define TARGET_ASM_DESTRUCTOR default_dtor_section_asm_out_destructor
100 # else
101 #  ifdef TARGET_ASM_NAMED_SECTION
102 #   define TARGET_ASM_DESTRUCTOR default_named_section_asm_out_destructor
103 #  else
104 #   define TARGET_ASM_DESTRUCTOR default_stabs_asm_out_destructor
105 #  endif
106 # endif
107 #endif
108
109 #define TARGET_ASM_OUTPUT_MI_THUNK NULL
110 #define TARGET_ASM_CAN_OUTPUT_MI_THUNK hook_bool_tree_hwi_hwi_tree_false
111
112 #if defined(TARGET_ASM_CONSTRUCTOR) && defined(TARGET_ASM_DESTRUCTOR)
113 #define TARGET_HAVE_CTORS_DTORS true
114 #else
115 #define TARGET_HAVE_CTORS_DTORS false
116 #define TARGET_ASM_CONSTRUCTOR NULL
117 #define TARGET_ASM_DESTRUCTOR NULL
118 #endif
119
120 #ifdef TARGET_ASM_NAMED_SECTION
121 #define TARGET_HAVE_NAMED_SECTIONS true
122 #else
123 #define TARGET_ASM_NAMED_SECTION default_no_named_section
124 #define TARGET_HAVE_NAMED_SECTIONS false
125 #endif
126
127 #ifndef TARGET_HAVE_TLS
128 #define TARGET_HAVE_TLS false
129 #endif
130
131 #ifndef TARGET_HAVE_SRODATA_SECTION
132 #define TARGET_HAVE_SRODATA_SECTION false
133 #endif
134
135 #ifndef TARGET_TERMINATE_DW2_EH_FRAME_INFO
136 #ifdef EH_FRAME_SECTION_NAME
137 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
138 #else
139 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO true
140 #endif
141 #endif
142
143 #define TARGET_DWARF_REGISTER_SPAN hook_rtx_rtx_null
144
145 #ifndef TARGET_ASM_EXCEPTION_SECTION
146 #define TARGET_ASM_EXCEPTION_SECTION default_exception_section
147 #endif
148
149 #ifndef TARGET_ASM_EH_FRAME_SECTION
150 #define TARGET_ASM_EH_FRAME_SECTION default_eh_frame_section
151 #endif
152
153 #ifndef TARGET_ASM_FILE_START
154 #define TARGET_ASM_FILE_START default_file_start
155 #endif
156
157 #ifndef TARGET_ASM_FILE_END
158 #define TARGET_ASM_FILE_END hook_void_void
159 #endif
160
161 #ifndef TARGET_ASM_FILE_START_APP_OFF
162 #define TARGET_ASM_FILE_START_APP_OFF false
163 #endif
164
165 #ifndef TARGET_ASM_FILE_START_FILE_DIRECTIVE
166 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
167 #endif
168
169 #ifndef TARGET_ASM_EXTERNAL_LIBCALL
170 #define TARGET_ASM_EXTERNAL_LIBCALL default_external_libcall
171 #endif
172
173 #define TARGET_ASM_ALIGNED_INT_OP                               \
174                        {TARGET_ASM_ALIGNED_HI_OP,               \
175                         TARGET_ASM_ALIGNED_SI_OP,               \
176                         TARGET_ASM_ALIGNED_DI_OP,               \
177                         TARGET_ASM_ALIGNED_TI_OP}
178
179 #define TARGET_ASM_UNALIGNED_INT_OP                             \
180                        {TARGET_ASM_UNALIGNED_HI_OP,             \
181                         TARGET_ASM_UNALIGNED_SI_OP,             \
182                         TARGET_ASM_UNALIGNED_DI_OP,             \
183                         TARGET_ASM_UNALIGNED_TI_OP}
184
185 #define TARGET_ASM_OUT {TARGET_ASM_OPEN_PAREN,                  \
186                         TARGET_ASM_CLOSE_PAREN,                 \
187                         TARGET_ASM_BYTE_OP,                     \
188                         TARGET_ASM_ALIGNED_INT_OP,              \
189                         TARGET_ASM_UNALIGNED_INT_OP,            \
190                         TARGET_ASM_INTEGER,                     \
191                         TARGET_ASM_GLOBALIZE_LABEL,             \
192                         TARGET_ASM_INTERNAL_LABEL,              \
193                         TARGET_ASM_ASSEMBLE_VISIBILITY,         \
194                         TARGET_ASM_FUNCTION_PROLOGUE,           \
195                         TARGET_ASM_FUNCTION_END_PROLOGUE,       \
196                         TARGET_ASM_FUNCTION_BEGIN_EPILOGUE,     \
197                         TARGET_ASM_FUNCTION_EPILOGUE,           \
198                         TARGET_ASM_NAMED_SECTION,               \
199                         TARGET_ASM_EXCEPTION_SECTION,           \
200                         TARGET_ASM_EH_FRAME_SECTION,            \
201                         TARGET_ASM_SELECT_SECTION,              \
202                         TARGET_ASM_SELECT_RTX_SECTION,          \
203                         TARGET_ASM_UNIQUE_SECTION,              \
204                         TARGET_ASM_CONSTRUCTOR,                 \
205                         TARGET_ASM_DESTRUCTOR,                  \
206                         TARGET_ASM_OUTPUT_MI_THUNK,             \
207                         TARGET_ASM_CAN_OUTPUT_MI_THUNK,         \
208                         TARGET_ASM_FILE_START,                  \
209                         TARGET_ASM_FILE_END,                    \
210                         TARGET_ASM_EXTERNAL_LIBCALL}
211
212 /* Scheduler hooks.  All of these default to null pointers, which
213    haifa-sched.c looks for and handles.  */
214 #define TARGET_SCHED_ADJUST_COST 0
215 #define TARGET_SCHED_ADJUST_PRIORITY 0
216 #define TARGET_SCHED_ISSUE_RATE 0
217 #define TARGET_SCHED_VARIABLE_ISSUE 0
218 #define TARGET_SCHED_INIT 0
219 #define TARGET_SCHED_FINISH 0
220 #define TARGET_SCHED_INIT_GLOBAL 0
221 #define TARGET_SCHED_FINISH_GLOBAL 0
222 #define TARGET_SCHED_REORDER 0
223 #define TARGET_SCHED_REORDER2 0
224 #define TARGET_SCHED_DEPENDENCIES_EVALUATION_HOOK 0
225 #define TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE 0
226 #define TARGET_SCHED_INIT_DFA_PRE_CYCLE_INSN 0
227 #define TARGET_SCHED_DFA_PRE_CYCLE_INSN 0
228 #define TARGET_SCHED_INIT_DFA_POST_CYCLE_INSN 0
229 #define TARGET_SCHED_DFA_POST_CYCLE_INSN 0
230 #define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD 0
231 #define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD 0
232 #define TARGET_SCHED_DFA_NEW_CYCLE 0
233 #define TARGET_SCHED_INIT_DFA_BUBBLES 0
234 #define TARGET_SCHED_DFA_BUBBLE 0
235 #define TARGET_SCHED_IS_COSTLY_DEPENDENCE 0
236
237 #define TARGET_SCHED                                            \
238   {TARGET_SCHED_ADJUST_COST,                                    \
239    TARGET_SCHED_ADJUST_PRIORITY,                                \
240    TARGET_SCHED_ISSUE_RATE,                                     \
241    TARGET_SCHED_VARIABLE_ISSUE,                                 \
242    TARGET_SCHED_INIT,                                           \
243    TARGET_SCHED_FINISH,                                         \
244    TARGET_SCHED_INIT_GLOBAL,                                    \
245    TARGET_SCHED_FINISH_GLOBAL,                                  \
246    TARGET_SCHED_REORDER,                                        \
247    TARGET_SCHED_REORDER2,                                       \
248    TARGET_SCHED_DEPENDENCIES_EVALUATION_HOOK,                   \
249    TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE,                     \
250    TARGET_SCHED_INIT_DFA_PRE_CYCLE_INSN,                        \
251    TARGET_SCHED_DFA_PRE_CYCLE_INSN,                             \
252    TARGET_SCHED_INIT_DFA_POST_CYCLE_INSN,                       \
253    TARGET_SCHED_DFA_POST_CYCLE_INSN,                            \
254    TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD,            \
255    TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD,      \
256    TARGET_SCHED_DFA_NEW_CYCLE,                                  \
257    TARGET_SCHED_INIT_DFA_BUBBLES,                               \
258    TARGET_SCHED_DFA_BUBBLE,                                     \
259    TARGET_SCHED_IS_COSTLY_DEPENDENCE}
260
261 /* In tree.c.  */
262 #define TARGET_MERGE_DECL_ATTRIBUTES merge_decl_attributes
263 #define TARGET_MERGE_TYPE_ATTRIBUTES merge_type_attributes
264 #define TARGET_ATTRIBUTE_TABLE NULL
265
266 /* In cse.c.  */
267 #define TARGET_ADDRESS_COST default_address_cost
268
269 /* In builtins.c.  */
270 #define TARGET_INIT_BUILTINS hook_void_void
271 #define TARGET_EXPAND_BUILTIN default_expand_builtin
272
273 /* In varasm.c.  */
274 #ifndef TARGET_SECTION_TYPE_FLAGS
275 #define TARGET_SECTION_TYPE_FLAGS default_section_type_flags
276 #endif
277
278 #ifndef TARGET_STRIP_NAME_ENCODING
279 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
280 #endif
281
282 #ifndef TARGET_BINDS_LOCAL_P
283 #define TARGET_BINDS_LOCAL_P default_binds_local_p
284 #endif
285
286 #ifndef TARGET_VALID_POINTER_MODE
287 #define TARGET_VALID_POINTER_MODE default_valid_pointer_mode
288 #endif
289
290 #ifndef TARGET_VECTOR_OPAQUE_P
291 #define TARGET_VECTOR_OPAQUE_P hook_bool_tree_false
292 #endif
293
294 /* In hook.c.  */
295 #define TARGET_CANNOT_MODIFY_JUMPS_P hook_bool_void_false
296 #define TARGET_BRANCH_TARGET_REGISTER_CLASS hook_int_void_no_regs
297 #define TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED hook_bool_bool_false
298 #define TARGET_CANNOT_FORCE_CONST_MEM hook_bool_rtx_false
299 #define TARGET_CANNOT_COPY_INSN_P NULL
300 #define TARGET_DELEGITIMIZE_ADDRESS hook_rtx_rtx_identity
301 #define TARGET_FUNCTION_OK_FOR_SIBCALL hook_bool_tree_tree_false
302 #define TARGET_COMP_TYPE_ATTRIBUTES hook_int_tree_tree_1
303 #define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES hook_void_tree
304 #define TARGET_INSERT_ATTRIBUTES hook_void_tree_treeptr
305 #define TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P hook_bool_tree_false
306 #define TARGET_MS_BITFIELD_LAYOUT_P hook_bool_tree_false
307 #define TARGET_RTX_COSTS hook_bool_rtx_int_int_intp_false
308
309 #ifndef TARGET_INIT_LIBFUNCS
310 #define TARGET_INIT_LIBFUNCS hook_void_void
311 #endif
312
313 #ifndef TARGET_IN_SMALL_DATA_P
314 #define TARGET_IN_SMALL_DATA_P hook_bool_tree_false
315 #endif
316
317 #ifndef TARGET_ENCODE_SECTION_INFO
318 #define TARGET_ENCODE_SECTION_INFO default_encode_section_info
319 #endif
320
321 #define TARGET_FIXED_CONDITION_CODE_REGS hook_bool_uintp_uintp_false
322
323 #define TARGET_CC_MODES_COMPATIBLE default_cc_modes_compatible
324
325 #define TARGET_MACHINE_DEPENDENT_REORG 0
326
327 #define TARGET_BUILD_BUILTIN_VA_LIST std_build_builtin_va_list
328
329 #define TARGET_GET_PCH_VALIDITY default_get_pch_validity
330 #define TARGET_PCH_VALID_P default_pch_valid_p
331
332 #define TARGET_DEFAULT_SHORT_ENUMS hook_bool_void_false
333
334 #define TARGET_BUILTIN_SETJMP_FRAME_VALUE default_builtin_setjmp_frame_value
335
336 #define TARGET_MD_ASM_CLOBBERS hook_tree_tree_identity
337
338 #define TARGET_PROMOTE_FUNCTION_ARGS hook_bool_tree_false
339 #define TARGET_PROMOTE_FUNCTION_RETURN hook_bool_tree_false
340 #define TARGET_PROMOTE_PROTOTYPES hook_bool_tree_false
341
342 #define TARGET_STRUCT_VALUE_RTX hook_rtx_tree_int_null
343 #define TARGET_RETURN_IN_MEMORY default_return_in_memory
344 #define TARGET_RETURN_IN_MSB hook_bool_tree_false
345
346 #define TARGET_EXPAND_BUILTIN_SAVEREGS default_expand_builtin_saveregs
347 #define TARGET_SETUP_INCOMING_VARARGS default_setup_incoming_varargs
348 #define TARGET_STRICT_ARGUMENT_NAMING hook_bool_CUMULATIVE_ARGS_false
349 #define TARGET_PRETEND_OUTGOING_VARARGS_NAMED default_pretend_outgoing_varargs_named
350
351 #define TARGET_CALLS {                                          \
352    TARGET_PROMOTE_FUNCTION_ARGS,                                \
353    TARGET_PROMOTE_FUNCTION_RETURN,                              \
354    TARGET_PROMOTE_PROTOTYPES,                                   \
355    TARGET_STRUCT_VALUE_RTX,                                     \
356    TARGET_RETURN_IN_MEMORY,                                     \
357    TARGET_RETURN_IN_MSB,                                        \
358    TARGET_EXPAND_BUILTIN_SAVEREGS,                              \
359    TARGET_SETUP_INCOMING_VARARGS,                               \
360    TARGET_STRICT_ARGUMENT_NAMING,                               \
361    TARGET_PRETEND_OUTGOING_VARARGS_NAMED,                       \
362    }
363
364 #ifndef TARGET_OPTF
365 #define TARGET_OPTF hook_void_charptr
366 #endif
367
368 /* The whole shebang.  */
369 #define TARGET_INITIALIZER                      \
370 {                                               \
371   TARGET_ASM_OUT,                               \
372   TARGET_SCHED,                                 \
373   TARGET_MERGE_DECL_ATTRIBUTES,                 \
374   TARGET_MERGE_TYPE_ATTRIBUTES,                 \
375   TARGET_ATTRIBUTE_TABLE,                       \
376   TARGET_COMP_TYPE_ATTRIBUTES,                  \
377   TARGET_SET_DEFAULT_TYPE_ATTRIBUTES,           \
378   TARGET_INSERT_ATTRIBUTES,                     \
379   TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P,        \
380   TARGET_MS_BITFIELD_LAYOUT_P,                  \
381   TARGET_INIT_BUILTINS,                         \
382   TARGET_EXPAND_BUILTIN,                        \
383   TARGET_INIT_LIBFUNCS,                         \
384   TARGET_SECTION_TYPE_FLAGS,                    \
385   TARGET_CANNOT_MODIFY_JUMPS_P,                 \
386   TARGET_BRANCH_TARGET_REGISTER_CLASS,          \
387   TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED,   \
388   TARGET_CANNOT_FORCE_CONST_MEM,                \
389   TARGET_CANNOT_COPY_INSN_P,                    \
390   TARGET_DELEGITIMIZE_ADDRESS,                  \
391   TARGET_FUNCTION_OK_FOR_SIBCALL,               \
392   TARGET_IN_SMALL_DATA_P,                       \
393   TARGET_BINDS_LOCAL_P,                         \
394   TARGET_ENCODE_SECTION_INFO,                   \
395   TARGET_STRIP_NAME_ENCODING,                   \
396   TARGET_VALID_POINTER_MODE,                    \
397   TARGET_VECTOR_OPAQUE_P,                       \
398   TARGET_RTX_COSTS,                             \
399   TARGET_ADDRESS_COST,                          \
400   TARGET_DWARF_REGISTER_SPAN,                   \
401   TARGET_FIXED_CONDITION_CODE_REGS,             \
402   TARGET_CC_MODES_COMPATIBLE,                   \
403   TARGET_MACHINE_DEPENDENT_REORG,               \
404   TARGET_BUILD_BUILTIN_VA_LIST,                 \
405   TARGET_GET_PCH_VALIDITY,                      \
406   TARGET_PCH_VALID_P,                           \
407   TARGET_DEFAULT_SHORT_ENUMS,                   \
408   TARGET_BUILTIN_SETJMP_FRAME_VALUE,            \
409   TARGET_MD_ASM_CLOBBERS,                       \
410   TARGET_HAVE_NAMED_SECTIONS,                   \
411   TARGET_HAVE_CTORS_DTORS,                      \
412   TARGET_HAVE_TLS,                              \
413   TARGET_HAVE_SRODATA_SECTION,                  \
414   TARGET_TERMINATE_DW2_EH_FRAME_INFO,           \
415   TARGET_ASM_FILE_START_APP_OFF,                \
416   TARGET_ASM_FILE_START_FILE_DIRECTIVE,         \
417   TARGET_CALLS,                                 \
418 }
419
420 #include "hooks.h"
421 #include "targhooks.h"