| /* Prototypes of target machine for GNU compiler. MIPS version. |
| Copyright (C) 1989-2021 Free Software Foundation, Inc. |
| Contributed by A. Lichnewsky (lich@inria.inria.fr). |
| Changed by Michael Meissner (meissner@osf.org). |
| 64-bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and |
| Brendan Eich (brendan@microunity.com). |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GCC_MIPS_PROTOS_H |
| #define GCC_MIPS_PROTOS_H |
| |
| /* Describes how a symbol is used. |
| |
| SYMBOL_CONTEXT_CALL |
| The symbol is used as the target of a call instruction. |
| |
| SYMBOL_CONTEXT_LEA |
| The symbol is used in a load-address operation. |
| |
| SYMBOL_CONTEXT_MEM |
| The symbol is used as the address in a MEM. */ |
| enum mips_symbol_context { |
| SYMBOL_CONTEXT_CALL, |
| SYMBOL_CONTEXT_LEA, |
| SYMBOL_CONTEXT_MEM |
| }; |
| |
| /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address. |
| |
| SYMBOL_ABSOLUTE |
| The symbol's value will be calculated using absolute relocations, |
| such as %hi and %lo. |
| |
| SYMBOL_GP_RELATIVE |
| The symbol's value will be calculated by adding a 16-bit offset |
| from $gp. |
| |
| SYMBOL_PC_RELATIVE |
| The symbol's value will be calculated using a MIPS16 PC-relative |
| calculation. |
| |
| SYMBOL_GOT_PAGE_OFST |
| The symbol's value will be calculated by loading an address |
| from the GOT and then applying a 16-bit offset. |
| |
| SYMBOL_GOT_DISP |
| The symbol's value will be loaded directly from the GOT. |
| |
| SYMBOL_GOTOFF_PAGE |
| An UNSPEC wrapper around a SYMBOL_GOT_PAGE_OFST. It represents the |
| offset from _gp of the GOT entry. |
| |
| SYMBOL_GOTOFF_DISP |
| An UNSPEC wrapper around a SYMBOL_GOT_DISP. It represents the |
| offset from _gp of the symbol's GOT entry. |
| |
| SYMBOL_GOTOFF_CALL |
| Like SYMBOL_GOTOFF_DISP, but used when calling a global function. |
| The GOT entry is allowed to point to a stub rather than to the |
| function itself. |
| |
| SYMBOL_GOTOFF_LOADGP |
| An UNSPEC wrapper around a function's address. It represents the |
| offset of _gp from the start of the function. |
| |
| SYMBOL_TLS |
| A thread-local symbol. |
| |
| SYMBOL_TLSGD |
| SYMBOL_TLSLDM |
| SYMBOL_DTPREL |
| SYMBOL_GOTTPREL |
| SYMBOL_TPREL |
| UNSPEC wrappers around SYMBOL_TLS, corresponding to the |
| thread-local storage relocation operators. |
| |
| SYMBOL_64_HIGH |
| For a 64-bit symbolic address X, this is the value of |
| (%highest(X) << 16) + %higher(X). |
| |
| SYMBOL_64_MID |
| For a 64-bit symbolic address X, this is the value of |
| (%higher(X) << 16) + %hi(X). |
| |
| SYMBOL_64_LOW |
| For a 64-bit symbolic address X, this is the value of |
| (%hi(X) << 16) + %lo(X). |
| |
| SYMBOL_HALF |
| An UNSPEC wrapper around any kind of address. It represents the |
| low 16 bits of that address. */ |
| enum mips_symbol_type { |
| SYMBOL_ABSOLUTE, |
| SYMBOL_GP_RELATIVE, |
| SYMBOL_PC_RELATIVE, |
| SYMBOL_GOT_PAGE_OFST, |
| SYMBOL_GOT_DISP, |
| SYMBOL_GOTOFF_PAGE, |
| SYMBOL_GOTOFF_DISP, |
| SYMBOL_GOTOFF_CALL, |
| SYMBOL_GOTOFF_LOADGP, |
| SYMBOL_TLS, |
| SYMBOL_TLSGD, |
| SYMBOL_TLSLDM, |
| SYMBOL_DTPREL, |
| SYMBOL_GOTTPREL, |
| SYMBOL_TPREL, |
| SYMBOL_64_HIGH, |
| SYMBOL_64_MID, |
| SYMBOL_64_LOW, |
| SYMBOL_HALF |
| }; |
| #define NUM_SYMBOL_TYPES (SYMBOL_HALF + 1) |
| |
| /* Identifiers a style of $gp initialization sequence. |
| |
| LOADGP_NONE |
| No initialization sequence is needed. |
| |
| LOADGP_OLDABI |
| The o32 and o64 PIC sequence (the kind traditionally generated |
| by .cpload). |
| |
| LOADGP_NEWABI |
| The n32 and n64 PIC sequence (the kind traditionally generated |
| by .cpsetup). |
| |
| LOADGP_ABSOLUTE |
| The GNU absolute sequence, as generated by loadgp_absolute. |
| |
| LOADGP_RTP |
| The VxWorks RTP PIC sequence, as generated by loadgp_rtp. */ |
| enum mips_loadgp_style { |
| LOADGP_NONE, |
| LOADGP_OLDABI, |
| LOADGP_NEWABI, |
| LOADGP_ABSOLUTE, |
| LOADGP_RTP |
| }; |
| |
| struct mips16e_save_restore_info; |
| |
| /* Classifies a type of call. |
| |
| MIPS_CALL_NORMAL |
| A normal call or call_value pattern. |
| |
| MIPS_CALL_SIBCALL |
| A sibcall or sibcall_value pattern. |
| |
| MIPS_CALL_EPILOGUE |
| A call inserted in the epilogue. */ |
| enum mips_call_type { |
| MIPS_CALL_NORMAL, |
| MIPS_CALL_SIBCALL, |
| MIPS_CALL_EPILOGUE |
| }; |
| |
| /* Controls the conditions under which certain instructions are split. |
| |
| SPLIT_IF_NECESSARY |
| Only perform splits that are necessary for correctness |
| (because no unsplit version exists). |
| |
| SPLIT_FOR_SPEED |
| Perform splits that are necessary for correctness or |
| beneficial for code speed. |
| |
| SPLIT_FOR_SIZE |
| Perform splits that are necessary for correctness or |
| beneficial for code size. */ |
| enum mips_split_type { |
| SPLIT_IF_NECESSARY, |
| SPLIT_FOR_SPEED, |
| SPLIT_FOR_SIZE |
| }; |
| |
| extern bool mips_symbolic_constant_p (rtx, enum mips_symbol_context, |
| enum mips_symbol_type *); |
| extern int mips_regno_mode_ok_for_base_p (int, machine_mode, bool); |
| extern bool mips_stack_address_p (rtx, machine_mode); |
| extern int mips_address_insns (rtx, machine_mode, bool); |
| extern int mips_const_insns (rtx); |
| extern int mips_split_const_insns (rtx); |
| extern int mips_split_128bit_const_insns (rtx); |
| extern int mips_load_store_insns (rtx, rtx_insn *); |
| extern int mips_idiv_insns (machine_mode); |
| extern rtx_insn *mips_emit_move (rtx, rtx); |
| #ifdef RTX_CODE |
| extern void mips_emit_binary (enum rtx_code, rtx, rtx, rtx); |
| #endif |
| extern rtx mips_pic_base_register (rtx); |
| extern rtx mips_got_load (rtx, rtx, enum mips_symbol_type); |
| extern bool mips_split_symbol (rtx, rtx, machine_mode, rtx *); |
| extern rtx mips_unspec_address (rtx, enum mips_symbol_type); |
| extern rtx mips_strip_unspec_address (rtx); |
| extern void mips_move_integer (rtx, rtx, unsigned HOST_WIDE_INT); |
| extern bool mips_legitimize_move (machine_mode, rtx, rtx); |
| |
| extern rtx mips_subword (rtx, bool); |
| extern bool mips_split_move_p (rtx, rtx, enum mips_split_type); |
| extern void mips_split_move (rtx, rtx, enum mips_split_type, rtx); |
| extern bool mips_split_move_insn_p (rtx, rtx, rtx); |
| extern void mips_split_move_insn (rtx, rtx, rtx); |
| extern void mips_split_128bit_move (rtx, rtx); |
| extern bool mips_split_128bit_move_p (rtx, rtx); |
| extern void mips_split_msa_copy_d (rtx, rtx, rtx, rtx (*)(rtx, rtx, rtx)); |
| extern void mips_split_msa_insert_d (rtx, rtx, rtx, rtx); |
| extern void mips_split_msa_fill_d (rtx, rtx); |
| extern const char *mips_output_move (rtx, rtx); |
| extern bool mips_cfun_has_cprestore_slot_p (void); |
| extern bool mips_cprestore_address_p (rtx, bool); |
| extern void mips_save_gp_to_cprestore_slot (rtx, rtx, rtx, rtx); |
| extern void mips_restore_gp_from_cprestore_slot (rtx); |
| #ifdef RTX_CODE |
| extern void mips_expand_scc (rtx *); |
| extern void mips_expand_conditional_branch (rtx *); |
| extern void mips_expand_vcondv2sf (rtx, rtx, rtx, enum rtx_code, rtx, rtx); |
| extern void mips_expand_conditional_move (rtx *); |
| extern void mips_expand_conditional_trap (rtx); |
| #endif |
| extern bool mips_use_pic_fn_addr_reg_p (const_rtx); |
| extern rtx_insn *mips_expand_call (enum mips_call_type, rtx, rtx, rtx, rtx, |
| bool); |
| extern void mips_split_call (rtx, rtx); |
| extern bool mips_get_pic_call_symbol (rtx *, int); |
| extern void mips_set_return_address (rtx, rtx); |
| extern bool mips_move_by_pieces_p (unsigned HOST_WIDE_INT, unsigned int); |
| extern bool mips_store_by_pieces_p (unsigned HOST_WIDE_INT, unsigned int); |
| extern bool mips_expand_block_move (rtx, rtx, rtx); |
| extern void mips_expand_synci_loop (rtx, rtx); |
| |
| extern void mips_init_cumulative_args (CUMULATIVE_ARGS *, tree); |
| extern bool mips_pad_reg_upward (machine_mode, tree); |
| |
| extern bool mips_expand_ext_as_unaligned_load (rtx, rtx, HOST_WIDE_INT, |
| HOST_WIDE_INT, bool); |
| extern bool mips_expand_ins_as_unaligned_store (rtx, rtx, HOST_WIDE_INT, |
| HOST_WIDE_INT); |
| extern bool mips_mem_fits_mode_p (machine_mode mode, rtx x); |
| extern HOST_WIDE_INT mips_debugger_offset (rtx, HOST_WIDE_INT); |
| |
| extern void mips_push_asm_switch (struct mips_asm_switch *); |
| extern void mips_pop_asm_switch (struct mips_asm_switch *); |
| extern void mips_output_external (FILE *, tree, const char *); |
| extern void mips_output_ascii (FILE *, const char *, size_t); |
| extern const char *mips_output_tls_reloc_directive (rtx *); |
| extern void mips_output_aligned_decl_common (FILE *, tree, const char *, |
| unsigned HOST_WIDE_INT, |
| unsigned int); |
| extern void mips_declare_common_object (FILE *, const char *, |
| const char *, unsigned HOST_WIDE_INT, |
| unsigned int, bool); |
| extern void mips_declare_object (FILE *, const char *, const char *, |
| const char *, ...) ATTRIBUTE_PRINTF_4; |
| extern void mips_declare_object_name (FILE *, const char *, tree); |
| extern void mips_finish_declare_object (FILE *, tree, int, int); |
| extern void mips_set_text_contents_type (FILE *, const char *, |
| unsigned long, bool); |
| |
| extern bool mips_small_data_pattern_p (rtx); |
| extern rtx mips_rewrite_small_data (rtx); |
| extern HOST_WIDE_INT mips_initial_elimination_offset (int, int); |
| extern rtx mips_return_addr (int, rtx); |
| extern bool mips_must_initialize_gp_p (void); |
| extern enum mips_loadgp_style mips_current_loadgp_style (void); |
| extern void mips_emit_save_slot_move (rtx, rtx, rtx); |
| extern void mips_expand_prologue (void); |
| extern void mips_expand_before_return (void); |
| extern void mips_expand_epilogue (bool); |
| extern bool mips_can_use_return_insn (void); |
| |
| extern bool mips_const_vector_same_val_p (rtx, machine_mode); |
| extern bool mips_const_vector_same_bytes_p (rtx, machine_mode); |
| extern bool mips_const_vector_same_int_p (rtx, machine_mode, HOST_WIDE_INT, |
| HOST_WIDE_INT); |
| extern bool mips_const_vector_shuffle_set_p (rtx, machine_mode); |
| extern bool mips_const_vector_bitimm_set_p (rtx, machine_mode); |
| extern bool mips_const_vector_bitimm_clr_p (rtx, machine_mode); |
| extern rtx mips_msa_vec_parallel_const_half (machine_mode, bool); |
| extern rtx mips_gen_const_int_vector (machine_mode, HOST_WIDE_INT); |
| extern bool mips_dangerous_for_la25_p (rtx); |
| extern enum reg_class mips_secondary_reload_class (enum reg_class, |
| machine_mode, |
| rtx, bool); |
| extern int mips_class_max_nregs (enum reg_class, machine_mode); |
| |
| extern machine_mode mips_hard_regno_caller_save_mode (unsigned int, |
| unsigned int, |
| machine_mode); |
| extern int mips_adjust_insn_length (rtx_insn *, int); |
| extern void mips_output_load_label (rtx); |
| extern const char *mips_output_conditional_branch (rtx_insn *, rtx *, |
| const char *, const char *); |
| extern const char *mips_output_order_conditional_branch (rtx_insn *, rtx *, |
| bool); |
| extern const char *mips_output_equal_conditional_branch (rtx_insn *, rtx *, |
| bool); |
| extern const char *mips_output_jump (rtx *, int, int, bool); |
| extern const char *mips_output_sync (void); |
| extern const char *mips_output_sync_loop (rtx_insn *, rtx *); |
| extern unsigned int mips_sync_loop_insns (rtx_insn *, rtx *); |
| extern const char *mips_output_division (const char *, rtx *); |
| extern const char *mips_msa_output_division (const char *, rtx *); |
| extern const char *mips_msa_output_shift_immediate (const char *, rtx *); |
| extern const char *mips_output_probe_stack_range (rtx, rtx); |
| extern bool mips_hard_regno_rename_ok (unsigned int, unsigned int); |
| extern bool mips_linked_madd_p (rtx_insn *, rtx_insn *); |
| extern bool mips_store_data_bypass_p (rtx_insn *, rtx_insn *); |
| extern int mips_dspalu_bypass_p (rtx, rtx); |
| extern rtx mips_prefetch_cookie (rtx, rtx); |
| extern rtx mips_loongson_ext2_prefetch_cookie (rtx, rtx); |
| |
| extern const char *current_section_name (void); |
| extern unsigned int current_section_flags (void); |
| extern bool mips_use_ins_ext_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT); |
| |
| extern const char *mips16e_output_save_restore (rtx, HOST_WIDE_INT); |
| extern bool mips16e_save_restore_pattern_p (rtx, HOST_WIDE_INT, |
| struct mips16e_save_restore_info *); |
| |
| extern bool mask_low_and_shift_p (machine_mode, rtx, rtx, int); |
| extern int mask_low_and_shift_len (machine_mode, rtx, rtx); |
| extern bool and_operands_ok (machine_mode, rtx, rtx); |
| extern bool mips_fmadd_bypass (rtx_insn *, rtx_insn *); |
| |
| union mips_gen_fn_ptrs |
| { |
| rtx (*fn_6) (rtx, rtx, rtx, rtx, rtx, rtx); |
| rtx (*fn_5) (rtx, rtx, rtx, rtx, rtx); |
| rtx (*fn_4) (rtx, rtx, rtx, rtx); |
| }; |
| |
| extern void mips_expand_atomic_qihi (union mips_gen_fn_ptrs, |
| rtx, rtx, rtx, rtx); |
| |
| extern void mips_expand_vector_init (rtx, rtx); |
| extern void mips_expand_vec_unpack (rtx op[2], bool, bool); |
| extern void mips_expand_vec_reduc (rtx, rtx, rtx (*)(rtx, rtx, rtx)); |
| extern void mips_expand_vec_minmax (rtx, rtx, rtx, |
| rtx (*) (rtx, rtx, rtx), bool); |
| |
| extern int mips_ldst_scaled_shift (machine_mode); |
| extern bool mips_signed_immediate_p (unsigned HOST_WIDE_INT, int, int); |
| extern bool mips_unsigned_immediate_p (unsigned HOST_WIDE_INT, int, int); |
| extern const char *umips_output_save_restore (bool, rtx); |
| extern bool umips_save_restore_pattern_p (bool, rtx); |
| extern bool umips_load_store_pair_p (bool, rtx *); |
| extern void umips_output_load_store_pair (bool, rtx *); |
| extern bool umips_movep_target_p (rtx, rtx); |
| extern bool umips_12bit_offset_address_p (rtx, machine_mode); |
| extern bool mips_9bit_offset_address_p (rtx, machine_mode); |
| extern bool lwsp_swsp_address_p (rtx, machine_mode); |
| extern bool m16_based_address_p (rtx, machine_mode, |
| bool (*)(rtx_def*, machine_mode)); |
| extern rtx mips_expand_thread_pointer (rtx); |
| extern void mips16_expand_get_fcsr (rtx); |
| extern void mips16_expand_set_fcsr (rtx); |
| |
| extern bool mips_eh_uses (unsigned int); |
| extern bool mips_epilogue_uses (unsigned int); |
| extern void mips_final_prescan_insn (rtx_insn *, rtx *, int); |
| extern int mips_trampoline_code_size (void); |
| extern void mips_function_profiler (FILE *); |
| extern bool mips_load_store_bonding_p (rtx *, machine_mode, bool); |
| |
| typedef rtx (*mulsidi3_gen_fn) (rtx, rtx, rtx); |
| #ifdef RTX_CODE |
| extern mulsidi3_gen_fn mips_mulsidi3_gen_fn (enum rtx_code); |
| #endif |
| |
| extern void mips_register_frame_header_opt (void); |
| extern void mips_expand_vec_cond_expr (machine_mode, machine_mode, rtx *); |
| extern void mips_expand_vec_cmp_expr (rtx *); |
| |
| /* Routines implemented in mips-d.c */ |
| extern void mips_d_target_versions (void); |
| extern void mips_d_register_target_info (void); |
| |
| #endif /* ! GCC_MIPS_PROTOS_H */ |
