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/* Definitions of target machine for GNU compiler for Renesas / SuperH SH.
Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2003,
2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Free Software Foundation, Inc.
Contributed by Steve Chamberlain (sac@cygnus.com).
Improved by Jim Wilson (wilson@cygnus.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_SH_PROTOS_H
#define GCC_SH_PROTOS_H
enum sh_function_kind {
/* A function with normal C ABI */
FUNCTION_ORDINARY,
/* A special function that guarantees that some otherwise call-clobbered
registers are not clobbered. These can't go through the SH5 resolver,
because it only saves argument passing registers. */
SFUNC_GOT,
/* A special function that should be linked statically. These are typically
smaller or not much larger than a PLT entry.
Some also have a non-standard ABI which precludes dynamic linking. */
SFUNC_STATIC
};
/* Atomic model. */
struct sh_atomic_model
{
enum enum_type
{
none = 0,
soft_gusa,
hard_llcs,
soft_tcb,
soft_imask,
num_models
};
/* If strict is set, disallow mixing of different models, as it would
happen on SH4A. */
bool strict;
enum_type type;
/* Name string as it was specified on the command line. */
const char* name;
/* Name string as it is used in C/C++ defines. */
const char* cdef_name;
/* GBR offset variable for TCB model. */
int tcb_gbr_offset;
};
extern const sh_atomic_model& selected_atomic_model (void);
/* Shortcuts to check the currently selected atomic model. */
#define TARGET_ATOMIC_ANY \
selected_atomic_model ().type != sh_atomic_model::none
#define TARGET_ATOMIC_STRICT \
selected_atomic_model ().strict
#define TARGET_ATOMIC_SOFT_GUSA \
selected_atomic_model ().type == sh_atomic_model::soft_gusa
#define TARGET_ATOMIC_HARD_LLCS \
selected_atomic_model ().type == sh_atomic_model::hard_llcs
#define TARGET_ATOMIC_SOFT_TCB \
selected_atomic_model ().type == sh_atomic_model::soft_tcb
#define TARGET_ATOMIC_SOFT_TCB_GBR_OFFSET_RTX \
GEN_INT (selected_atomic_model ().tcb_gbr_offset)
#define TARGET_ATOMIC_SOFT_IMASK \
selected_atomic_model ().type == sh_atomic_model::soft_imask
#ifdef RTX_CODE
extern rtx sh_fsca_sf2int (void);
extern rtx sh_fsca_int2sf (void);
/* Declare functions defined in sh.c and used in templates. */
extern const char *output_branch (int, rtx, rtx *);
extern const char *output_ieee_ccmpeq (rtx, rtx *);
extern const char *output_branchy_insn (enum rtx_code, const char *, rtx, rtx *);
extern const char *output_movedouble (rtx, rtx[], enum machine_mode);
extern const char *output_movepcrel (rtx, rtx[], enum machine_mode);
extern const char *output_far_jump (rtx, rtx);
extern rtx sfunc_uses_reg (rtx);
extern int barrier_align (rtx);
extern int sh_loop_align (rtx);
extern bool fp_zero_operand (rtx);
extern bool fp_one_operand (rtx);
extern rtx get_fpscr_rtx (void);
extern bool sh_legitimate_index_p (enum machine_mode, rtx, bool, bool);
extern bool sh_legitimize_reload_address (rtx *, enum machine_mode, int, int);
extern rtx legitimize_pic_address (rtx, enum machine_mode, rtx);
extern bool nonpic_symbol_mentioned_p (rtx);
extern void emit_sf_insn (rtx);
extern void emit_df_insn (rtx);
extern void output_pic_addr_const (FILE *, rtx);
extern bool expand_block_move (rtx *);
extern void prepare_move_operands (rtx[], enum machine_mode mode);
extern enum rtx_code prepare_cbranch_operands (rtx *, enum machine_mode mode,
enum rtx_code comparison);
extern void expand_cbranchsi4 (rtx *operands, enum rtx_code comparison, int);
extern bool expand_cbranchdi4 (rtx *operands, enum rtx_code comparison);
extern void sh_emit_scc_to_t (enum rtx_code, rtx, rtx);
extern rtx sh_emit_cheap_store_flag (enum machine_mode, enum rtx_code, rtx, rtx);
extern void sh_emit_compare_and_branch (rtx *, enum machine_mode);
extern void sh_emit_compare_and_set (rtx *, enum machine_mode);
extern bool sh_ashlsi_clobbers_t_reg_p (rtx);
extern bool sh_lshrsi_clobbers_t_reg_p (rtx);
extern void gen_shifty_op (int, rtx *);
extern void gen_shifty_hi_op (int, rtx *);
extern bool expand_ashiftrt (rtx *);
extern bool sh_dynamicalize_shift_p (rtx);
extern int shl_and_kind (rtx, rtx, int *);
extern int shl_and_length (rtx);
extern int shl_and_scr_length (rtx);
extern bool gen_shl_and (rtx, rtx, rtx, rtx);
extern int shl_sext_kind (rtx, rtx, int *);
extern int shl_sext_length (rtx);
extern bool gen_shl_sext (rtx, rtx, rtx, rtx);
extern rtx gen_datalabel_ref (rtx);
extern int regs_used (rtx, int);
extern void fixup_addr_diff_vecs (rtx);
extern int get_dest_uid (rtx, int);
extern void final_prescan_insn (rtx, rtx *, int);
extern enum tls_model tls_symbolic_operand (rtx, enum machine_mode);
extern bool system_reg_operand (rtx, enum machine_mode);
extern bool reg_unused_after (rtx, rtx);
extern void expand_sf_unop (rtx (*)(rtx, rtx, rtx), rtx *);
extern void expand_sf_binop (rtx (*)(rtx, rtx, rtx, rtx), rtx *);
extern void expand_df_unop (rtx (*)(rtx, rtx, rtx), rtx *);
extern void expand_df_binop (rtx (*)(rtx, rtx, rtx, rtx), rtx *);
extern int sh_insn_length_adjustment (rtx);
extern bool sh_can_redirect_branch (rtx, rtx);
extern void sh_expand_unop_v2sf (enum rtx_code, rtx, rtx);
extern void sh_expand_binop_v2sf (enum rtx_code, rtx, rtx, rtx);
extern bool sh_expand_t_scc (rtx *);
extern rtx sh_gen_truncate (enum machine_mode, rtx, int);
extern bool sh_vector_mode_supported_p (enum machine_mode);
extern bool sh_cfun_trap_exit_p (void);
extern rtx sh_find_equiv_gbr_addr (rtx cur_insn, rtx mem);
extern int sh_eval_treg_value (rtx op);
/* Result value of sh_find_set_of_reg. */
struct set_of_reg
{
/* The insn where sh_find_set_of_reg stopped looking.
Can be NULL_RTX if the end of the insn list was reached. */
rtx insn;
/* The set rtx of the specified reg if found, NULL_RTX otherwise. */
const_rtx set_rtx;
/* The set source rtx of the specified reg if found, NULL_RTX otherwise.
Usually, this is the most interesting return value. */
rtx set_src;
};
extern set_of_reg sh_find_set_of_reg (rtx reg, rtx insn, rtx(*stepfunc)(rtx));
extern bool sh_is_logical_t_store_expr (rtx op, rtx insn);
extern rtx sh_try_omit_signzero_extend (rtx extended_op, rtx insn);
#endif /* RTX_CODE */
extern void sh_cpu_cpp_builtins (cpp_reader* pfile);
extern const char *output_jump_label_table (void);
extern rtx get_t_reg_rtx (void);
extern rtx get_fpscr_rtx (void);
extern int sh_media_register_for_return (void);
extern void sh_expand_prologue (void);
extern void sh_expand_epilogue (bool);
extern void sh_set_return_address (rtx, rtx);
extern int initial_elimination_offset (int, int);
extern bool fldi_ok (void);
extern bool sh_hard_regno_rename_ok (unsigned int, unsigned int);
extern bool sh_cfun_interrupt_handler_p (void);
extern bool sh_cfun_resbank_handler_p (void);
extern bool sh_attr_renesas_p (const_tree);
extern bool sh_cfun_attr_renesas_p (void);
extern bool sh_cannot_change_mode_class
(enum machine_mode, enum machine_mode, enum reg_class);
extern bool sh_small_register_classes_for_mode_p (enum machine_mode);
extern void sh_mark_label (rtx, int);
extern bool check_use_sfunc_addr (rtx, rtx);
#ifdef HARD_CONST
extern void fpscr_set_from_mem (int, HARD_REG_SET);
#endif
extern void sh_pr_interrupt (struct cpp_reader *);
extern void sh_pr_trapa (struct cpp_reader *);
extern void sh_pr_nosave_low_regs (struct cpp_reader *);
extern rtx function_symbol (rtx, const char *, enum sh_function_kind);
extern rtx sh_get_pr_initial_val (void);
extern void sh_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree, signed int, enum machine_mode);
extern rtx sh_dwarf_register_span (rtx);
extern rtx replace_n_hard_rtx (rtx, rtx *, int , int);
extern int shmedia_cleanup_truncate (rtx *, void *);
extern bool sh_contains_memref_p (rtx);
extern bool sh_loads_bankedreg_p (rtx);
extern rtx shmedia_prepare_call_address (rtx fnaddr, int is_sibcall);
extern int sh2a_get_function_vector_number (rtx);
extern bool sh2a_is_function_vector_call (rtx);
extern void sh_fix_range (const char *);
extern bool sh_hard_regno_mode_ok (unsigned int, enum machine_mode);
extern bool sh_can_use_simple_return_p (void);
#endif /* ! GCC_SH_PROTOS_H */
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