gcc/target-def.h

   1 /* Default initializers for a generic GCC target.
   2    Copyright (C) 2001, 2002, 2003 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_REORDER 0
 221 #define TARGET_SCHED_REORDER2 0
 222 #define TARGET_SCHED_DEPENDENCIES_EVALUATION_HOOK 0
 223 #define TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE 0
 224 #define TARGET_SCHED_INIT_DFA_PRE_CYCLE_INSN 0
 225 #define TARGET_SCHED_DFA_PRE_CYCLE_INSN 0
 226 #define TARGET_SCHED_INIT_DFA_POST_CYCLE_INSN 0
 227 #define TARGET_SCHED_DFA_POST_CYCLE_INSN 0
 228 #define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD 0
 229 #define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD 0
 230 #define TARGET_SCHED_DFA_NEW_CYCLE 0
 231 #define TARGET_SCHED_INIT_DFA_BUBBLES 0
 232 #define TARGET_SCHED_DFA_BUBBLE 0
 233 #define TARGET_SCHED_IS_COSTLY_DEPENDENCE 0
 234
 235 #define TARGET_SCHED                                            \
 236   {TARGET_SCHED_ADJUST_COST,                                    \
 237    TARGET_SCHED_ADJUST_PRIORITY,                                \
 238    TARGET_SCHED_ISSUE_RATE,                                     \
 239    TARGET_SCHED_VARIABLE_ISSUE,                                 \
 240    TARGET_SCHED_INIT,                                           \
 241    TARGET_SCHED_FINISH,                                         \
 242    TARGET_SCHED_REORDER,                                        \
 243    TARGET_SCHED_REORDER2,                                       \
 244    TARGET_SCHED_DEPENDENCIES_EVALUATION_HOOK,                   \
 245    TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE,                     \
 246    TARGET_SCHED_INIT_DFA_PRE_CYCLE_INSN,                        \
 247    TARGET_SCHED_DFA_PRE_CYCLE_INSN,                             \
 248    TARGET_SCHED_INIT_DFA_POST_CYCLE_INSN,                       \
 249    TARGET_SCHED_DFA_POST_CYCLE_INSN,                            \
 250    TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD,            \
 251    TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD,      \
 252    TARGET_SCHED_DFA_NEW_CYCLE,                                  \
 253    TARGET_SCHED_INIT_DFA_BUBBLES,                               \
 254    TARGET_SCHED_DFA_BUBBLE,                                     \
 255    TARGET_SCHED_IS_COSTLY_DEPENDENCE}
 256
 257 /* In tree.c.  */
 258 #define TARGET_MERGE_DECL_ATTRIBUTES merge_decl_attributes
 259 #define TARGET_MERGE_TYPE_ATTRIBUTES merge_type_attributes
 260 #define TARGET_ATTRIBUTE_TABLE NULL
 261
 262 /* In cse.c.  */
 263 #define TARGET_ADDRESS_COST default_address_cost
 264
 265 #define TARGET_DIRECT_POOL_LOAD_P default_direct_pool_load_p
 266
 267 /* In builtins.c.  */
 268 #define TARGET_INIT_BUILTINS hook_void_void
 269 #define TARGET_EXPAND_BUILTIN default_expand_builtin
 270
 271 /* In varasm.c.  */
 272 #ifndef TARGET_SECTION_TYPE_FLAGS
 273 #define TARGET_SECTION_TYPE_FLAGS default_section_type_flags
 274 #endif
 275
 276 #ifndef TARGET_STRIP_NAME_ENCODING
 277 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
 278 #endif
 279
 280 #ifndef TARGET_BINDS_LOCAL_P
 281 #define TARGET_BINDS_LOCAL_P default_binds_local_p
 282 #endif
 283
 284 #ifndef TARGET_VALID_POINTER_MODE
 285 #define TARGET_VALID_POINTER_MODE default_valid_pointer_mode
 286 #endif
 287
 288 #ifndef TARGET_VECTOR_OPAQUE_P
 289 #define TARGET_VECTOR_OPAQUE_P hook_bool_tree_false
 290 #endif
 291
 292 /* In hook.c.  */
 293 #define TARGET_CANNOT_MODIFY_JUMPS_P hook_bool_void_false
 294 #define TARGET_BRANCH_TARGET_REGISTER_CLASS hook_int_void_no_regs
 295 #define TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED hook_bool_bool_false
 296 #define TARGET_CANNOT_FORCE_CONST_MEM hook_bool_rtx_false
 297 #define TARGET_CANNOT_COPY_INSN_P NULL
 298 #define TARGET_DELEGITIMIZE_ADDRESS hook_rtx_rtx_identity
 299 #define TARGET_FUNCTION_OK_FOR_SIBCALL hook_bool_tree_tree_false
 300 #define TARGET_COMP_TYPE_ATTRIBUTES hook_int_tree_tree_1
 301 #define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES hook_void_tree
 302 #define TARGET_INSERT_ATTRIBUTES hook_void_tree_treeptr
 303 #define TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P hook_bool_tree_false
 304 #define TARGET_MS_BITFIELD_LAYOUT_P hook_bool_tree_false
 305 #define TARGET_RTX_COSTS hook_bool_rtx_int_int_intp_false
 306
 307 #ifndef TARGET_INIT_LIBFUNCS
 308 #define TARGET_INIT_LIBFUNCS hook_void_void
 309 #endif
 310
 311 #ifndef TARGET_IN_SMALL_DATA_P
 312 #define TARGET_IN_SMALL_DATA_P hook_bool_tree_false
 313 #endif
 314
 315 #ifndef TARGET_ENCODE_SECTION_INFO
 316 #define TARGET_ENCODE_SECTION_INFO default_encode_section_info
 317 #endif
 318
 319 #define TARGET_MACHINE_DEPENDENT_REORG 0
 320
 321 #define TARGET_BUILD_BUILTIN_VA_LIST std_build_builtin_va_list
 322
 323 #define TARGET_GET_PCH_VALIDITY default_get_pch_validity
 324 #define TARGET_PCH_VALID_P default_pch_valid_p
 325
 326 #define TARGET_PROMOTE_FUNCTION_ARGS default_promote_function_args
 327 #define TARGET_PROMOTE_FUNCTION_RETURN default_promote_function_return
 328 #define TARGET_PROMOTE_PROTOTYPES default_promote_prototypes
 329
 330 #define TARGET_STRUCT_VALUE_RTX default_struct_value_rtx
 331 #define TARGET_RETURN_IN_MEMORY default_return_in_memory
 332
 333 #define TARGET_EXPAND_BUILTIN_SAVEREGS default_expand_builtin_saveregs
 334 #define TARGET_SETUP_INCOMING_VARARGS default_setup_incoming_varargs
 335 #define TARGET_STRICT_ARGUMENT_NAMING default_strict_argument_naming
 336 #define TARGET_PRETEND_OUTGOING_VARARGS_NAMED default_pretend_outgoing_varargs_named
 337
 338 #define TARGET_CALLS {                                          \
 339    TARGET_PROMOTE_FUNCTION_ARGS,                                \
 340    TARGET_PROMOTE_FUNCTION_RETURN,                              \
 341    TARGET_PROMOTE_PROTOTYPES,                                   \
 342    TARGET_STRUCT_VALUE_RTX,                                     \
 343    TARGET_RETURN_IN_MEMORY,                                     \
 344    TARGET_EXPAND_BUILTIN_SAVEREGS,                              \
 345    TARGET_SETUP_INCOMING_VARARGS,                               \
 346    TARGET_STRICT_ARGUMENT_NAMING,                               \
 347    TARGET_PRETEND_OUTGOING_VARARGS_NAMED,                       \
 348    }
 349
 350 /* The whole shebang.  */
 351 #define TARGET_INITIALIZER                      \
 352 {                                               \
 353   TARGET_ASM_OUT,                               \
 354   TARGET_SCHED,                                 \
 355   TARGET_MERGE_DECL_ATTRIBUTES,                 \
 356   TARGET_MERGE_TYPE_ATTRIBUTES,                 \
 357   TARGET_ATTRIBUTE_TABLE,                       \
 358   TARGET_COMP_TYPE_ATTRIBUTES,                  \
 359   TARGET_SET_DEFAULT_TYPE_ATTRIBUTES,           \
 360   TARGET_INSERT_ATTRIBUTES,                     \
 361   TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P,        \
 362   TARGET_MS_BITFIELD_LAYOUT_P,                  \
 363   TARGET_INIT_BUILTINS,                         \
 364   TARGET_EXPAND_BUILTIN,                        \
 365   TARGET_INIT_LIBFUNCS,                         \
 366   TARGET_SECTION_TYPE_FLAGS,                    \
 367   TARGET_CANNOT_MODIFY_JUMPS_P,                 \
 368   TARGET_BRANCH_TARGET_REGISTER_CLASS,          \
 369   TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED,   \
 370   TARGET_CANNOT_FORCE_CONST_MEM,                \
 371   TARGET_CANNOT_COPY_INSN_P,                    \
 372   TARGET_DELEGITIMIZE_ADDRESS,                  \
 373   TARGET_FUNCTION_OK_FOR_SIBCALL,               \
 374   TARGET_IN_SMALL_DATA_P,                       \
 375   TARGET_BINDS_LOCAL_P,                         \
 376   TARGET_ENCODE_SECTION_INFO,                   \
 377   TARGET_STRIP_NAME_ENCODING,                   \
 378   TARGET_VALID_POINTER_MODE,                    \
 379   TARGET_VECTOR_OPAQUE_P,                       \
 380   TARGET_RTX_COSTS,                             \
 381   TARGET_ADDRESS_COST,                          \
 382   TARGET_DIRECT_POOL_LOAD_P,                    \
 383   TARGET_DWARF_REGISTER_SPAN,                   \
 384   TARGET_MACHINE_DEPENDENT_REORG,               \
 385   TARGET_BUILD_BUILTIN_VA_LIST,                 \
 386   TARGET_GET_PCH_VALIDITY,                      \
 387   TARGET_PCH_VALID_P,                           \
 388   TARGET_HAVE_NAMED_SECTIONS,                   \
 389   TARGET_HAVE_CTORS_DTORS,                      \
 390   TARGET_HAVE_TLS,                              \
 391   TARGET_HAVE_SRODATA_SECTION,                  \
 392   TARGET_TERMINATE_DW2_EH_FRAME_INFO,           \
 393   TARGET_ASM_FILE_START_APP_OFF,                \
 394   TARGET_ASM_FILE_START_FILE_DIRECTIVE,         \
 395   TARGET_CALLS,                                 \
 396 }
 397
 398 #include "hooks.h"
 399 #include "targhooks.h"