1/* Definitions of target machine for GNU compiler, for IBM S/390. 2 Copyright (C) 2000-2022 Free Software Foundation, Inc. 3 4 Contributed by Hartmut Penner (hpenner@de.ibm.com) 5 6This file is part of GCC. 7 8GCC is free software; you can redistribute it and/or modify it under 9the terms of the GNU General Public License as published by the Free 10Software Foundation; either version 3, or (at your option) any later 11version. 12 13GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14WARRANTY; without even the implied warranty of MERCHANTABILITY or 15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16for more details. 17 18You should have received a copy of the GNU General Public License 19along with GCC; see the file COPYING3. If not see 20<http://www.gnu.org/licenses/>. */ 21 22 23 24/* Prototypes of functions used for constraint evaluation in 25 constraints.c. */ 26 27extern int s390_mem_constraint (const char *str, rtx op); 28extern int s390_O_constraint_str (const char c, HOST_WIDE_INT value); 29extern int s390_N_constraint_str (const char *str, HOST_WIDE_INT value); 30extern int s390_float_const_zero_p (rtx value); 31extern bool s390_check_symref_alignment (rtx addr, HOST_WIDE_INT alignment); 32 33 34/* In s390-common.cc. */ 35extern bool s390_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED, 36 struct gcc_options *opts_set ATTRIBUTE_UNUSED, 37 const struct cl_decoded_option *decoded, 38 location_t loc); 39 40/* Declare functions in s390.cc. */ 41 42extern HOST_WIDE_INT s390_initial_elimination_offset (int, int); 43extern void s390_emit_prologue (void); 44extern void s390_emit_epilogue (bool); 45extern void s390_expand_split_stack_prologue (void); 46extern bool s390_can_use_simple_return_insn (void); 47extern bool s390_can_use_return_insn (void); 48extern void s390_function_profiler (FILE *, int); 49extern void s390_set_has_landing_pad_p (bool); 50extern bool s390_hard_regno_rename_ok (unsigned int, unsigned int); 51extern int s390_class_max_nregs (enum reg_class, machine_mode); 52extern bool s390_return_addr_from_memory(void); 53extern rtx s390_gen_lowpart_subreg (machine_mode, rtx); 54extern bool s390_fma_allowed_p (machine_mode); 55#if S390_USE_TARGET_ATTRIBUTE 56extern tree s390_valid_target_attribute_tree (tree args, 57 struct gcc_options *opts, 58 const struct gcc_options 59 *opts_set, bool is_pragma); 60extern void s390_activate_target_options (tree new_tree); 61extern void 62s390_asm_output_function_prefix (FILE *asm_out_file, 63 const char *fnname ATTRIBUTE_UNUSED); 64extern void 65s390_asm_declare_function_size (FILE *asm_out_file, 66 const char *fnname ATTRIBUTE_UNUSED, tree decl); 67#endif 68 69extern void s390_rawmemchr (machine_mode elt_mode, rtx dst, rtx src, rtx pat); 70 71#ifdef RTX_CODE 72extern int s390_extra_constraint_str (rtx, int, const char *); 73extern int s390_const_ok_for_constraint_p (HOST_WIDE_INT, int, const char *); 74extern int s390_const_double_ok_for_constraint_p (rtx, int, const char *); 75extern int s390_single_part (rtx, machine_mode, machine_mode, int); 76extern unsigned HOST_WIDE_INT s390_extract_part (rtx, machine_mode, int); 77extern bool s390_contiguous_bitmask_p (unsigned HOST_WIDE_INT, bool, int, int *, int *); 78extern bool s390_contiguous_bitmask_vector_p (rtx, int *, int *); 79extern bool s390_bytemask_vector_p (rtx, unsigned *); 80extern bool s390_split_ok_p (rtx, rtx, machine_mode, int); 81extern bool s390_overlap_p (rtx, rtx, HOST_WIDE_INT); 82extern bool s390_offset_p (rtx, rtx, rtx); 83extern bool s390_rel_address_ok_p (rtx); 84extern int tls_symbolic_operand (rtx); 85 86extern bool s390_match_ccmode (rtx_insn *, machine_mode); 87extern machine_mode s390_tm_ccmode (rtx, rtx, bool); 88extern machine_mode s390_select_ccmode (enum rtx_code, rtx, rtx); 89extern rtx s390_emit_compare (enum rtx_code, rtx, rtx); 90extern rtx_insn *s390_emit_jump (rtx, rtx); 91extern bool symbolic_reference_mentioned_p (rtx); 92extern bool tls_symbolic_reference_mentioned_p (rtx); 93extern bool legitimate_la_operand_p (rtx); 94extern bool preferred_la_operand_p (rtx, rtx); 95extern int legitimate_pic_operand_p (rtx); 96extern bool legitimate_reload_constant_p (rtx); 97extern rtx legitimize_pic_address (rtx, rtx); 98extern rtx legitimize_reload_address (rtx, machine_mode, int, int); 99extern enum reg_class s390_secondary_input_reload_class (enum reg_class, 100 machine_mode, 101 rtx); 102extern enum reg_class s390_secondary_output_reload_class (enum reg_class, 103 machine_mode, 104 rtx); 105extern void s390_reload_larl_operand (rtx , rtx , rtx); 106extern void s390_reload_symref_address (rtx , rtx , rtx , bool); 107extern void s390_expand_plus_operand (rtx, rtx, rtx); 108extern void emit_symbolic_move (rtx *); 109extern void s390_load_address (rtx, rtx); 110extern bool s390_expand_cpymem (rtx, rtx, rtx); 111extern void s390_expand_setmem (rtx, rtx, rtx); 112extern bool s390_expand_cmpmem (rtx, rtx, rtx, rtx); 113extern void s390_expand_vec_strlen (rtx, rtx, rtx); 114extern void s390_expand_vec_movstr (rtx, rtx, rtx); 115extern bool s390_expand_addcc (enum rtx_code, rtx, rtx, rtx, rtx, rtx); 116extern bool s390_expand_insv (rtx, rtx, rtx, rtx); 117extern void s390_expand_cs (machine_mode, rtx, rtx, rtx, rtx, rtx, bool); 118extern void s390_expand_atomic_exchange_tdsi (rtx, rtx, rtx); 119extern void s390_expand_atomic (machine_mode, enum rtx_code, 120 rtx, rtx, rtx, bool); 121extern void s390_expand_tbegin (rtx, rtx, rtx, bool); 122extern void s390_expand_vec_compare (rtx, enum rtx_code, rtx, rtx); 123extern void s390_expand_vec_compare_cc (rtx, enum rtx_code, rtx, rtx, bool); 124extern enum rtx_code s390_reverse_condition (machine_mode, enum rtx_code); 125extern void s390_expand_vcond (rtx, rtx, rtx, enum rtx_code, rtx, rtx); 126extern void s390_expand_vec_init (rtx, rtx); 127extern rtx s390_expand_merge_perm_const (machine_mode, bool); 128extern void s390_expand_merge (rtx, rtx, rtx, bool); 129extern rtx s390_build_signbit_mask (machine_mode); 130extern rtx s390_return_addr_rtx (int, rtx); 131extern rtx s390_back_chain_rtx (void); 132extern rtx_insn *s390_emit_call (rtx, rtx, rtx, rtx); 133extern void s390_expand_logical_operator (enum rtx_code, 134 machine_mode, rtx *); 135extern bool s390_logical_operator_ok_p (rtx *); 136extern void s390_narrow_logical_operator (enum rtx_code, rtx *, rtx *); 137extern void s390_split_access_reg (rtx, rtx *, rtx *); 138 139extern void print_operand_address (FILE *, rtx); 140extern void print_operand (FILE *, rtx, int); 141extern void s390_output_pool_entry (rtx, machine_mode, unsigned int); 142extern bool s390_const_int_pool_entry_p (rtx, HOST_WIDE_INT *); 143extern int s390_label_align (rtx_insn *); 144extern int s390_agen_dep_p (rtx_insn *, rtx_insn *); 145extern rtx_insn *s390_load_got (void); 146extern rtx s390_get_thread_pointer (void); 147extern void s390_emit_tpf_eh_return (rtx); 148extern bool s390_legitimate_address_without_index_p (rtx); 149extern bool s390_decompose_addrstyle_without_index (rtx, rtx *, 150 HOST_WIDE_INT *); 151extern bool s390_valid_shift_count (rtx op, HOST_WIDE_INT required_mask = 63); 152extern int s390_branch_condition_mask (rtx); 153extern int s390_compare_and_branch_condition_mask (rtx); 154extern bool s390_extzv_shift_ok (int, int, unsigned HOST_WIDE_INT); 155extern void s390_asm_output_function_label (FILE *, const char *, tree); 156extern void s390_output_split_stack_data (rtx, rtx, rtx, rtx); 157 158enum s390_indirect_branch_type 159 { 160 s390_indirect_branch_type_jump = 0, 161 s390_indirect_branch_type_call, 162 s390_indirect_branch_type_return 163 }; 164extern void s390_indirect_branch_via_thunk (unsigned int regno, 165 unsigned int return_addr_regno, 166 rtx comparison_operator, 167 enum s390_indirect_branch_type type); 168extern void s390_indirect_branch_via_inline_thunk (rtx execute_target); 169#endif /* RTX_CODE */ 170 171/* s390-c.cc routines */ 172extern void s390_cpu_cpp_builtins (struct cpp_reader *); 173extern void s390_register_target_pragmas (void); 174 175/* Routines for s390-c.cc */ 176extern bool s390_const_operand_ok (tree, int, int, tree); 177 178/* Pass management. */ 179namespace gcc { class context; } 180class rtl_opt_pass; 181 182extern rtl_opt_pass *make_pass_s390_early_mach (gcc::context *ctxt); 183