1 /* Definitions of target machine for GNU compiler, for IBM S/390. 2 Copyright (C) 2000-2016 Free Software Foundation, Inc. 3 4 Contributed by Hartmut Penner (hpenner@de.ibm.com) 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free 10 Software Foundation; either version 3, or (at your option) any later 11 version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16 for more details. 17 18 You should have received a copy of the GNU General Public License 19 along 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 27 extern int s390_mem_constraint (const char *str, rtx op); 28 extern int s390_O_constraint_str (const char c, HOST_WIDE_INT value); 29 extern int s390_N_constraint_str (const char *str, HOST_WIDE_INT value); 30 extern int s390_float_const_zero_p (rtx value); 31 extern bool s390_check_symref_alignment (rtx addr, HOST_WIDE_INT alignment); 32 33 34 /* In s390-common.c. */ 35 extern 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.c. */ 41 42 extern HOST_WIDE_INT s390_initial_elimination_offset (int, int); 43 extern void s390_emit_prologue (void); 44 extern void s390_emit_epilogue (bool); 45 extern void s390_expand_split_stack_prologue (void); 46 extern bool s390_can_use_simple_return_insn (void); 47 extern bool s390_can_use_return_insn (void); 48 extern void s390_function_profiler (FILE *, int); 49 extern void s390_set_has_landing_pad_p (bool); 50 extern bool s390_hard_regno_mode_ok (unsigned int, machine_mode); 51 extern bool s390_hard_regno_rename_ok (unsigned int, unsigned int); 52 extern int s390_class_max_nregs (enum reg_class, machine_mode); 53 extern int s390_cannot_change_mode_class (machine_mode, machine_mode, 54 enum reg_class); 55 extern bool s390_function_arg_vector (machine_mode, const_tree); 56 extern bool s390_return_addr_from_memory(void); 57 #if S390_USE_TARGET_ATTRIBUTE 58 extern tree s390_valid_target_attribute_tree (tree args, 59 struct gcc_options *opts, 60 const struct gcc_options 61 *opts_set, bool is_pragma); 62 extern void s390_activate_target_options (tree new_tree); 63 extern void 64 s390_asm_output_function_prefix (FILE *asm_out_file, 65 const char *fnname ATTRIBUTE_UNUSED); 66 extern void 67 s390_asm_declare_function_size (FILE *asm_out_file, 68 const char *fnname ATTRIBUTE_UNUSED, tree decl); 69 #endif 70 71 #ifdef RTX_CODE 72 extern int s390_extra_constraint_str (rtx, int, const char *); 73 extern int s390_const_ok_for_constraint_p (HOST_WIDE_INT, int, const char *); 74 extern int s390_const_double_ok_for_constraint_p (rtx, int, const char *); 75 extern int s390_single_part (rtx, machine_mode, machine_mode, int); 76 extern unsigned HOST_WIDE_INT s390_extract_part (rtx, machine_mode, int); 77 extern bool s390_contiguous_bitmask_p (unsigned HOST_WIDE_INT, int, int *, int *); 78 extern bool s390_contiguous_bitmask_vector_p (rtx, int *, int *); 79 extern bool s390_bytemask_vector_p (rtx, unsigned *); 80 extern bool s390_split_ok_p (rtx, rtx, machine_mode, int); 81 extern bool s390_overlap_p (rtx, rtx, HOST_WIDE_INT); 82 extern bool s390_offset_p (rtx, rtx, rtx); 83 extern int tls_symbolic_operand (rtx); 84 85 extern bool s390_match_ccmode (rtx_insn *, machine_mode); 86 extern machine_mode s390_tm_ccmode (rtx, rtx, bool); 87 extern machine_mode s390_select_ccmode (enum rtx_code, rtx, rtx); 88 extern rtx s390_emit_compare (enum rtx_code, rtx, rtx); 89 extern rtx_insn *s390_emit_jump (rtx, rtx); 90 extern bool symbolic_reference_mentioned_p (rtx); 91 extern bool tls_symbolic_reference_mentioned_p (rtx); 92 extern bool legitimate_la_operand_p (rtx); 93 extern bool preferred_la_operand_p (rtx, rtx); 94 extern int legitimate_pic_operand_p (rtx); 95 extern bool legitimate_reload_constant_p (rtx); 96 extern rtx legitimize_pic_address (rtx, rtx); 97 extern rtx legitimize_reload_address (rtx, machine_mode, int, int); 98 extern enum reg_class s390_secondary_input_reload_class (enum reg_class, 99 machine_mode, 100 rtx); 101 extern enum reg_class s390_secondary_output_reload_class (enum reg_class, 102 machine_mode, 103 rtx); 104 extern void s390_reload_larl_operand (rtx , rtx , rtx); 105 extern void s390_reload_symref_address (rtx , rtx , rtx , bool); 106 extern void s390_expand_plus_operand (rtx, rtx, rtx); 107 extern void emit_symbolic_move (rtx *); 108 extern void s390_load_address (rtx, rtx); 109 extern bool s390_expand_movmem (rtx, rtx, rtx); 110 extern void s390_expand_setmem (rtx, rtx, rtx); 111 extern bool s390_expand_cmpmem (rtx, rtx, rtx, rtx); 112 extern void s390_expand_vec_strlen (rtx, rtx, rtx); 113 extern void s390_expand_vec_movstr (rtx, rtx, rtx); 114 extern bool s390_expand_addcc (enum rtx_code, rtx, rtx, rtx, rtx, rtx); 115 extern bool s390_expand_insv (rtx, rtx, rtx, rtx); 116 extern void s390_expand_cs_hqi (machine_mode, rtx, rtx, rtx, 117 rtx, rtx, bool); 118 extern void s390_expand_atomic (machine_mode, enum rtx_code, 119 rtx, rtx, rtx, bool); 120 extern void s390_expand_tbegin (rtx, rtx, rtx, bool); 121 extern void s390_expand_vec_compare (rtx, enum rtx_code, rtx, rtx); 122 extern void s390_expand_vec_compare_cc (rtx, enum rtx_code, rtx, rtx, bool); 123 extern void s390_expand_vcond (rtx, rtx, rtx, enum rtx_code, rtx, rtx); 124 extern void s390_expand_vec_init (rtx, rtx); 125 extern rtx s390_return_addr_rtx (int, rtx); 126 extern rtx s390_back_chain_rtx (void); 127 extern rtx_insn *s390_emit_call (rtx, rtx, rtx, rtx); 128 extern void s390_expand_logical_operator (enum rtx_code, 129 machine_mode, rtx *); 130 extern bool s390_logical_operator_ok_p (rtx *); 131 extern void s390_narrow_logical_operator (enum rtx_code, rtx *, rtx *); 132 extern void s390_split_access_reg (rtx, rtx *, rtx *); 133 134 extern void print_operand_address (FILE *, rtx); 135 extern void print_operand (FILE *, rtx, int); 136 extern void s390_output_pool_entry (rtx, machine_mode, unsigned int); 137 extern int s390_label_align (rtx); 138 extern int s390_agen_dep_p (rtx_insn *, rtx_insn *); 139 extern rtx_insn *s390_load_got (void); 140 extern rtx s390_get_thread_pointer (void); 141 extern void s390_emit_tpf_eh_return (rtx); 142 extern bool s390_legitimate_address_without_index_p (rtx); 143 extern bool s390_decompose_addrstyle_without_index (rtx, rtx *, 144 HOST_WIDE_INT *); 145 extern int s390_branch_condition_mask (rtx); 146 extern int s390_compare_and_branch_condition_mask (rtx); 147 extern bool s390_extzv_shift_ok (int, int, unsigned HOST_WIDE_INT); 148 extern void s390_asm_output_function_label (FILE *, const char *, tree); 149 150 enum s390_indirect_branch_type 151 { 152 s390_indirect_branch_type_jump = 0, 153 s390_indirect_branch_type_call, 154 s390_indirect_branch_type_return 155 }; 156 extern void s390_indirect_branch_via_thunk (unsigned int regno, 157 unsigned int return_addr_regno, 158 rtx comparison_operator, 159 enum s390_indirect_branch_type type); 160 extern void s390_indirect_branch_via_inline_thunk (rtx execute_target); 161 #endif /* RTX_CODE */ 162 163 /* s390-c.c routines */ 164 extern void s390_cpu_cpp_builtins (struct cpp_reader *); 165 extern void s390_register_target_pragmas (void); 166 167 /* Routines for s390-c.c */ 168 extern bool s390_const_operand_ok (tree, int, int, tree); 169