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 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GCC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING. If not, write to 19the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20Boston, MA 02110-1301, USA. */ 21 22/* Functions in i386.c */ 23extern void override_options (void); 24extern void optimization_options (int, int); 25 26extern int ix86_can_use_return_insn_p (void); 27extern int ix86_frame_pointer_required (void); 28extern void ix86_setup_frame_addresses (void); 29 30extern void ix86_file_end (void); 31extern HOST_WIDE_INT ix86_initial_elimination_offset (int, int); 32extern void ix86_expand_prologue (void); 33extern void ix86_expand_epilogue (int); 34 35extern void ix86_output_addr_vec_elt (FILE *, int); 36extern void ix86_output_addr_diff_elt (FILE *, int, int); 37 38#ifdef RTX_CODE 39extern int ix86_aligned_p (rtx); 40 41extern int standard_80387_constant_p (rtx); 42extern const char *standard_80387_constant_opcode (rtx); 43extern rtx standard_80387_constant_rtx (int); 44extern int standard_sse_constant_p (rtx); 45extern int symbolic_reference_mentioned_p (rtx); 46extern bool extended_reg_mentioned_p (rtx); 47extern bool x86_extended_QIreg_mentioned_p (rtx); 48extern bool x86_extended_reg_mentioned_p (rtx); 49extern enum machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx); 50 51extern int ix86_expand_movmem (rtx, rtx, rtx, rtx); 52extern int ix86_expand_clrmem (rtx, rtx, rtx); 53extern int ix86_expand_strlen (rtx, rtx, rtx, rtx); 54 55extern bool legitimate_constant_p (rtx); 56extern bool constant_address_p (rtx); 57extern bool legitimate_pic_operand_p (rtx); 58extern int legitimate_pic_address_disp_p (rtx); 59extern int legitimate_address_p (enum machine_mode, rtx, int); 60extern rtx legitimize_address (rtx, rtx, enum machine_mode); 61 62extern void print_reg (rtx, int, FILE*); 63extern void print_operand (FILE*, rtx, int); 64extern void print_operand_address (FILE*, rtx); 65extern bool output_addr_const_extra (FILE*, rtx); 66 67extern void split_di (rtx[], int, rtx[], rtx[]); 68extern void split_ti (rtx[], int, rtx[], rtx[]); 69 70extern const char *output_set_got (rtx); 71extern const char *output_387_binary_op (rtx, rtx*); 72extern const char *output_387_reg_move (rtx, rtx*); 73extern const char *output_fix_trunc (rtx, rtx*, int); 74extern const char *output_fp_compare (rtx, rtx*, int, int); 75 76extern void ix86_expand_clear (rtx); 77extern void ix86_expand_move (enum machine_mode, rtx[]); 78extern void ix86_expand_vector_move (enum machine_mode, rtx[]); 79extern void ix86_expand_vector_move_misalign (enum machine_mode, rtx[]); 80extern void ix86_expand_push (enum machine_mode, rtx); 81extern rtx ix86_fixup_binary_operands (enum rtx_code, 82 enum machine_mode, rtx[]); 83extern void ix86_fixup_binary_operands_no_copy (enum rtx_code, 84 enum machine_mode, rtx[]); 85extern void ix86_expand_binary_operator (enum rtx_code, 86 enum machine_mode, rtx[]); 87extern int ix86_binary_operator_ok (enum rtx_code, enum machine_mode, rtx[]); 88extern void ix86_expand_unary_operator (enum rtx_code, enum machine_mode, 89 rtx[]); 90extern rtx ix86_build_signbit_mask (enum machine_mode, bool, bool); 91extern void ix86_expand_fp_absneg_operator (enum rtx_code, enum machine_mode, 92 rtx[]); 93extern void ix86_expand_copysign (rtx []); 94extern void ix86_split_copysign_const (rtx []); 95extern void ix86_split_copysign_var (rtx []); 96extern int ix86_unary_operator_ok (enum rtx_code, enum machine_mode, rtx[]); 97extern int ix86_match_ccmode (rtx, enum machine_mode); 98extern rtx ix86_expand_compare (enum rtx_code, rtx *, rtx *); 99extern int ix86_use_fcomi_compare (enum rtx_code); 100extern void ix86_expand_branch (enum rtx_code, rtx); 101extern int ix86_expand_setcc (enum rtx_code, rtx); 102extern int ix86_expand_int_movcc (rtx[]); 103extern int ix86_expand_fp_movcc (rtx[]); 104extern bool ix86_expand_fp_vcond (rtx[]); 105extern bool ix86_expand_int_vcond (rtx[]); 106extern int ix86_expand_int_addcc (rtx[]); 107extern void ix86_expand_call (rtx, rtx, rtx, rtx, rtx, int); 108extern void x86_initialize_trampoline (rtx, rtx, rtx); 109extern rtx ix86_zero_extend_to_Pmode (rtx); 110extern void ix86_split_long_move (rtx[]); 111extern void ix86_split_ashl (rtx *, rtx, enum machine_mode); 112extern void ix86_split_ashr (rtx *, rtx, enum machine_mode); 113extern void ix86_split_lshr (rtx *, rtx, enum machine_mode); 114extern rtx ix86_find_base_term (rtx); 115extern int ix86_check_movabs (rtx, int); 116 117extern rtx assign_386_stack_local (enum machine_mode, enum ix86_stack_slot); 118extern int ix86_attr_length_immediate_default (rtx, int); 119extern int ix86_attr_length_address_default (rtx); 120 121extern enum machine_mode ix86_fp_compare_mode (enum rtx_code); 122 123extern rtx ix86_libcall_value (enum machine_mode); 124extern bool ix86_function_value_regno_p (int); 125extern bool ix86_function_arg_regno_p (int); 126extern int ix86_function_arg_boundary (enum machine_mode, tree); 127extern int ix86_return_in_memory (tree); 128extern void ix86_va_start (tree, rtx); 129extern rtx ix86_va_arg (tree, tree); 130 131extern rtx ix86_force_to_memory (enum machine_mode, rtx); 132extern void ix86_free_from_memory (enum machine_mode); 133extern void ix86_split_fp_branch (enum rtx_code code, rtx, rtx, 134 rtx, rtx, rtx, rtx); 135extern bool ix86_hard_regno_mode_ok (int, enum machine_mode); 136extern bool ix86_modes_tieable_p (enum machine_mode, enum machine_mode); 137extern int ix86_register_move_cost (enum machine_mode, enum reg_class, 138 enum reg_class); 139extern int ix86_secondary_memory_needed (enum reg_class, enum reg_class, 140 enum machine_mode, int); 141extern bool ix86_cannot_change_mode_class (enum machine_mode, 142 enum machine_mode, enum reg_class); 143extern enum reg_class ix86_preferred_reload_class (rtx, enum reg_class); 144extern int ix86_memory_move_cost (enum machine_mode, enum reg_class, int); 145extern int ix86_mode_needed (int, rtx); 146extern void emit_i387_cw_initialization (int); 147extern bool ix86_fp_jump_nontrivial_p (enum rtx_code); 148extern void x86_order_regs_for_local_alloc (void); 149extern void x86_function_profiler (FILE *, int); 150extern void x86_emit_floatuns (rtx [2]); 151extern void ix86_emit_fp_unordered_jump (rtx); 152 153extern void ix86_emit_i387_log1p (rtx, rtx); 154 155extern enum rtx_code ix86_reverse_condition (enum rtx_code, enum machine_mode); 156 157#ifdef TREE_CODE 158extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree); 159extern rtx function_arg (CUMULATIVE_ARGS *, enum machine_mode, tree, int); 160extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode, 161 tree, int); 162extern rtx ix86_function_value (tree, tree, bool); 163#endif 164 165#endif 166 167#ifdef TREE_CODE 168extern int ix86_return_pops_args (tree, tree, int); 169 170extern int ix86_data_alignment (tree, int); 171extern int ix86_local_alignment (tree, int); 172extern int ix86_constant_alignment (tree, int); 173extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *); 174extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *); 175 176extern unsigned int i386_pe_section_type_flags (tree, const char *, int); 177extern void i386_pe_asm_named_section (const char *, unsigned int, tree); 178extern int x86_field_alignment (tree, int); 179#endif 180 181extern rtx ix86_tls_get_addr (void); 182 183extern void ix86_expand_vector_init (bool, rtx, rtx); 184extern void ix86_expand_vector_set (bool, rtx, rtx, int); 185extern void ix86_expand_vector_extract (bool, rtx, rtx, int); 186extern void ix86_expand_reduc_v4sf (rtx (*)(rtx, rtx, rtx), rtx, rtx); 187 188/* In winnt.c */ 189extern int i386_pe_dllexport_name_p (const char *); 190extern int i386_pe_dllimport_name_p (const char *); 191extern void i386_pe_unique_section (tree, int); 192extern void i386_pe_declare_function_type (FILE *, const char *, int); 193extern void i386_pe_record_external_function (tree, const char *); 194extern void i386_pe_record_exported_symbol (const char *, int); 195extern void i386_pe_asm_file_end (FILE *); 196extern void i386_pe_encode_section_info (tree, rtx, int); 197extern const char *i386_pe_strip_name_encoding (const char *); 198extern const char *i386_pe_strip_name_encoding_full (const char *); 199extern void i386_pe_output_labelref (FILE *, const char *); 200extern bool i386_pe_valid_dllimport_attribute_p (tree); 201 202/* In winnt-cxx.c and winnt-stubs.c */ 203extern void i386_pe_adjust_class_at_definition (tree); 204extern bool i386_pe_type_dllimport_p (tree); 205extern bool i386_pe_type_dllexport_p (tree); 206 207extern rtx maybe_get_pool_constant (rtx); 208 209extern char internal_label_prefix[16]; 210extern int internal_label_prefix_len; 211 212enum ix86_address_seg { SEG_DEFAULT, SEG_FS, SEG_GS }; 213struct ix86_address 214{ 215 rtx base, index, disp; 216 HOST_WIDE_INT scale; 217 enum ix86_address_seg seg; 218}; 219 220extern int ix86_decompose_address (rtx, struct ix86_address *); 221extern int memory_address_length (rtx addr); 222extern void x86_output_aligned_bss (FILE *, tree, const char *, 223 unsigned HOST_WIDE_INT, int); 224extern void x86_elf_aligned_common (FILE *, const char *, 225 unsigned HOST_WIDE_INT, int); 226 227#ifdef RTX_CODE 228extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *, 229 enum rtx_code *, enum rtx_code *); 230extern enum rtx_code ix86_fp_compare_code_to_integer (enum rtx_code); 231#endif 232extern int asm_preferred_eh_data_format (int, int); 233