1 /* Definitions of target machine for GCC for IA-32. 2 Copyright (C) 1988, 1992, 1994, 1995, 1996, 1996, 1997, 1998, 1999, 3 2000, 2001, 2002, 2003, 2004, 2005, 2006 4 Free Software Foundation, Inc. 5 6 This file is part of GCC. 7 8 GCC 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 GCC 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 GCC; see the file COPYING. If not, write to 20 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 21 Boston, MA 02110-1301, USA. */ 22 23 /* Functions in i386.c */ 24 extern void override_options (void); 25 extern void optimization_options (int, int); 26 27 extern int ix86_can_use_return_insn_p (void); 28 extern int ix86_frame_pointer_required (void); 29 extern void ix86_setup_frame_addresses (void); 30 31 extern void ix86_file_end (void); 32 extern HOST_WIDE_INT ix86_initial_elimination_offset (int, int); 33 extern void ix86_expand_prologue (void); 34 extern void ix86_expand_epilogue (int); 35 36 extern void ix86_output_addr_vec_elt (FILE *, int); 37 extern void ix86_output_addr_diff_elt (FILE *, int, int); 38 39 #ifdef RTX_CODE 40 extern int ix86_aligned_p (rtx); 41 42 extern int standard_80387_constant_p (rtx); 43 extern const char *standard_80387_constant_opcode (rtx); 44 extern rtx standard_80387_constant_rtx (int); 45 extern int standard_sse_constant_p (rtx); 46 extern const char *standard_sse_constant_opcode (rtx, rtx); 47 extern int symbolic_reference_mentioned_p (rtx); 48 extern bool extended_reg_mentioned_p (rtx); 49 extern bool x86_extended_QIreg_mentioned_p (rtx); 50 extern bool x86_extended_reg_mentioned_p (rtx); 51 extern enum machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx); 52 53 extern int ix86_expand_movmem (rtx, rtx, rtx, rtx); 54 extern int ix86_expand_clrmem (rtx, rtx, rtx); 55 extern int ix86_expand_strlen (rtx, rtx, rtx, rtx); 56 57 extern bool legitimate_constant_p (rtx); 58 extern bool constant_address_p (rtx); 59 extern bool legitimate_pic_operand_p (rtx); 60 extern int legitimate_pic_address_disp_p (rtx); 61 extern int legitimate_address_p (enum machine_mode, rtx, int); 62 extern rtx legitimize_address (rtx, rtx, enum machine_mode); 63 64 extern void print_reg (rtx, int, FILE*); 65 extern void print_operand (FILE*, rtx, int); 66 extern void print_operand_address (FILE*, rtx); 67 extern bool output_addr_const_extra (FILE*, rtx); 68 69 extern void split_di (rtx[], int, rtx[], rtx[]); 70 extern void split_ti (rtx[], int, rtx[], rtx[]); 71 72 extern const char *output_set_got (rtx, rtx); 73 extern const char *output_387_binary_op (rtx, rtx*); 74 extern const char *output_387_reg_move (rtx, rtx*); 75 extern const char *output_fix_trunc (rtx, rtx*, int); 76 extern const char *output_fp_compare (rtx, rtx*, int, int); 77 78 extern void ix86_expand_clear (rtx); 79 extern void ix86_expand_move (enum machine_mode, rtx[]); 80 extern void ix86_expand_vector_move (enum machine_mode, rtx[]); 81 extern void ix86_expand_vector_move_misalign (enum machine_mode, rtx[]); 82 extern void ix86_expand_push (enum machine_mode, rtx); 83 extern rtx ix86_fixup_binary_operands (enum rtx_code, 84 enum machine_mode, rtx[]); 85 extern void ix86_fixup_binary_operands_no_copy (enum rtx_code, 86 enum machine_mode, rtx[]); 87 extern void ix86_expand_binary_operator (enum rtx_code, 88 enum machine_mode, rtx[]); 89 extern int ix86_binary_operator_ok (enum rtx_code, enum machine_mode, rtx[]); 90 extern void ix86_expand_unary_operator (enum rtx_code, enum machine_mode, 91 rtx[]); 92 extern rtx ix86_build_signbit_mask (enum machine_mode, bool, bool); 93 extern void ix86_expand_fp_absneg_operator (enum rtx_code, enum machine_mode, 94 rtx[]); 95 extern void ix86_expand_copysign (rtx []); 96 extern void ix86_split_copysign_const (rtx []); 97 extern void ix86_split_copysign_var (rtx []); 98 extern int ix86_unary_operator_ok (enum rtx_code, enum machine_mode, rtx[]); 99 extern int ix86_match_ccmode (rtx, enum machine_mode); 100 extern rtx ix86_expand_compare (enum rtx_code, rtx *, rtx *); 101 extern int ix86_use_fcomi_compare (enum rtx_code); 102 extern void ix86_expand_branch (enum rtx_code, rtx); 103 extern int ix86_expand_setcc (enum rtx_code, rtx); 104 extern int ix86_expand_int_movcc (rtx[]); 105 extern int ix86_expand_fp_movcc (rtx[]); 106 extern bool ix86_expand_fp_vcond (rtx[]); 107 extern bool ix86_expand_int_vcond (rtx[]); 108 extern int ix86_expand_int_addcc (rtx[]); 109 extern void ix86_expand_call (rtx, rtx, rtx, rtx, rtx, int); 110 extern void x86_initialize_trampoline (rtx, rtx, rtx); 111 extern rtx ix86_zero_extend_to_Pmode (rtx); 112 extern void ix86_split_long_move (rtx[]); 113 extern void ix86_split_ashl (rtx *, rtx, enum machine_mode); 114 extern void ix86_split_ashr (rtx *, rtx, enum machine_mode); 115 extern void ix86_split_lshr (rtx *, rtx, enum machine_mode); 116 extern rtx ix86_find_base_term (rtx); 117 extern int ix86_check_movabs (rtx, int); 118 119 extern rtx assign_386_stack_local (enum machine_mode, enum ix86_stack_slot); 120 extern int ix86_attr_length_immediate_default (rtx, int); 121 extern int ix86_attr_length_address_default (rtx); 122 123 extern enum machine_mode ix86_fp_compare_mode (enum rtx_code); 124 125 extern rtx ix86_libcall_value (enum machine_mode); 126 extern bool ix86_function_value_regno_p (int); 127 extern bool ix86_function_arg_regno_p (int); 128 extern int ix86_function_arg_boundary (enum machine_mode, tree); 129 extern int ix86_return_in_memory (tree); 130 extern void ix86_va_start (tree, rtx); 131 extern rtx ix86_va_arg (tree, tree); 132 133 extern rtx ix86_force_to_memory (enum machine_mode, rtx); 134 extern void ix86_free_from_memory (enum machine_mode); 135 extern void ix86_split_fp_branch (enum rtx_code code, rtx, rtx, 136 rtx, rtx, rtx, rtx); 137 extern bool ix86_hard_regno_mode_ok (int, enum machine_mode); 138 extern bool ix86_modes_tieable_p (enum machine_mode, enum machine_mode); 139 extern int ix86_register_move_cost (enum machine_mode, enum reg_class, 140 enum reg_class); 141 extern int ix86_secondary_memory_needed (enum reg_class, enum reg_class, 142 enum machine_mode, int); 143 extern bool ix86_cannot_change_mode_class (enum machine_mode, 144 enum machine_mode, enum reg_class); 145 extern enum reg_class ix86_preferred_reload_class (rtx, enum reg_class); 146 extern enum reg_class ix86_preferred_output_reload_class (rtx, enum reg_class); 147 extern int ix86_memory_move_cost (enum machine_mode, enum reg_class, int); 148 extern int ix86_mode_needed (int, rtx); 149 extern void emit_i387_cw_initialization (int); 150 extern bool ix86_fp_jump_nontrivial_p (enum rtx_code); 151 extern void x86_order_regs_for_local_alloc (void); 152 extern void x86_function_profiler (FILE *, int); 153 extern void x86_emit_floatuns (rtx [2]); 154 extern void ix86_emit_fp_unordered_jump (rtx); 155 156 extern void ix86_emit_i387_log1p (rtx, rtx); 157 158 extern enum rtx_code ix86_reverse_condition (enum rtx_code, enum machine_mode); 159 160 #ifdef TREE_CODE 161 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree); 162 extern rtx function_arg (CUMULATIVE_ARGS *, enum machine_mode, tree, int); 163 extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode, 164 tree, int); 165 extern rtx ix86_function_value (tree, tree, bool); 166 #endif 167 168 #endif 169 170 #ifdef TREE_CODE 171 extern int ix86_return_pops_args (tree, tree, int); 172 173 extern int ix86_data_alignment (tree, int); 174 extern int ix86_local_alignment (tree, int); 175 extern int ix86_constant_alignment (tree, int); 176 extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *); 177 extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *); 178 179 extern unsigned int i386_pe_section_type_flags (tree, const char *, int); 180 extern void i386_pe_asm_named_section (const char *, unsigned int, tree); 181 extern int x86_field_alignment (tree, int); 182 #endif 183 184 extern rtx ix86_tls_get_addr (void); 185 extern rtx ix86_tls_module_base (void); 186 187 extern void ix86_expand_vector_init (bool, rtx, rtx); 188 extern void ix86_expand_vector_set (bool, rtx, rtx, int); 189 extern void ix86_expand_vector_extract (bool, rtx, rtx, int); 190 extern void ix86_expand_reduc_v4sf (rtx (*)(rtx, rtx, rtx), rtx, rtx); 191 192 /* In winnt.c */ 193 extern int i386_pe_dllexport_name_p (const char *); 194 extern int i386_pe_dllimport_name_p (const char *); 195 extern void i386_pe_unique_section (tree, int); 196 extern void i386_pe_declare_function_type (FILE *, const char *, int); 197 extern void i386_pe_record_external_function (tree, const char *); 198 extern void i386_pe_record_exported_symbol (const char *, int); 199 extern void i386_pe_asm_file_end (FILE *); 200 extern void i386_pe_encode_section_info (tree, rtx, int); 201 extern const char *i386_pe_strip_name_encoding (const char *); 202 extern const char *i386_pe_strip_name_encoding_full (const char *); 203 extern void i386_pe_output_labelref (FILE *, const char *); 204 extern bool i386_pe_valid_dllimport_attribute_p (tree); 205 206 /* In winnt-cxx.c and winnt-stubs.c */ 207 extern void i386_pe_adjust_class_at_definition (tree); 208 extern bool i386_pe_type_dllimport_p (tree); 209 extern bool i386_pe_type_dllexport_p (tree); 210 211 extern rtx maybe_get_pool_constant (rtx); 212 213 extern char internal_label_prefix[16]; 214 extern int internal_label_prefix_len; 215 216 enum ix86_address_seg { SEG_DEFAULT, SEG_FS, SEG_GS }; 217 struct ix86_address 218 { 219 rtx base, index, disp; 220 HOST_WIDE_INT scale; 221 enum ix86_address_seg seg; 222 }; 223 224 extern int ix86_decompose_address (rtx, struct ix86_address *); 225 extern int memory_address_length (rtx addr); 226 extern void x86_output_aligned_bss (FILE *, tree, const char *, 227 unsigned HOST_WIDE_INT, int); 228 extern void x86_elf_aligned_common (FILE *, const char *, 229 unsigned HOST_WIDE_INT, int); 230 231 #ifdef RTX_CODE 232 extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *, 233 enum rtx_code *, enum rtx_code *); 234 extern enum rtx_code ix86_fp_compare_code_to_integer (enum rtx_code); 235 #endif 236 extern int asm_preferred_eh_data_format (int, int); 237