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/* Prototypes of target machine for GNU compiler. MIPS version.
Copyright (C) 1989-2015 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_load_store_insns (rtx, rtx_insn *);
extern int mips_idiv_insns (void);
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);
extern bool mips_split_move_insn_p (rtx, rtx, rtx);
extern void mips_split_move_insn (rtx, 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_arg_upward (machine_mode, const_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 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_secondary_memory_needed (enum reg_class, enum reg_class,
machine_mode);
extern bool mips_cannot_change_mode_class (machine_mode,
machine_mode, enum reg_class);
extern bool mips_dangerous_for_la25_p (rtx);
extern bool mips_modes_tieable_p (machine_mode, machine_mode);
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_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_output_probe_stack_range (rtx, rtx);
extern unsigned int mips_hard_regno_nregs (int, machine_mode);
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 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 bool mips_expand_vec_perm_const (rtx op[4]);
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 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,
int (*)(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
#endif /* ! GCC_MIPS_PROTOS_H */
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