1 /* Prototypes of target machine for GNU compiler. LoongArch version.
2 Copyright (C) 2021-2023 Free Software Foundation, Inc.
3 Contributed by Loongson Ltd.
4 Based on MIPS target for GNU compiler.
5
6 This file is part of GCC.
7
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
11 any later version.
12
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License 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 #ifndef GCC_LOONGARCH_PROTOS_H
23 #define GCC_LOONGARCH_PROTOS_H
24
25 /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address.
26
27 SYMBOL_GOT_DISP
28 The symbol's value will be loaded directly from the GOT.
29
30 SYMBOL_PCREL
31 The symbol's value will be loaded directly from data section within
32 +/- 2GiB range.
33
34 SYMBOL_PCREL64
35 The symbol's value will be loaded directly from data section within
36 +/- 8EiB range.
37
38 SYMBOL_TLS
39 A thread-local symbol.
40
41 SYMBOL_TLS_IE
42 SYMBOL_TLSGD
43 SYMBOL_TLSLDM
44 UNSPEC wrappers around SYMBOL_TLS, corresponding to the
45 thread-local storage relocation operators.
46 */
47 enum loongarch_symbol_type {
48 SYMBOL_GOT_DISP,
49 SYMBOL_PCREL,
50 SYMBOL_PCREL64,
51 SYMBOL_TLS,
52 SYMBOL_TLS_IE,
53 SYMBOL_TLS_LE,
54 SYMBOL_TLSGD,
55 SYMBOL_TLSLDM,
56 };
57 #define NUM_SYMBOL_TYPES (SYMBOL_TLSLDM + 1)
58
59 /* Routines implemented in loongarch.c. */
60 extern rtx loongarch_emit_move (rtx, rtx);
61 extern HOST_WIDE_INT loongarch_initial_elimination_offset (int, int);
62 extern void loongarch_expand_prologue (void);
63 extern void loongarch_expand_epilogue (bool);
64 extern bool loongarch_can_use_return_insn (void);
65
66 extern bool loongarch_symbolic_constant_p (rtx, enum loongarch_symbol_type *);
67 extern int loongarch_regno_mode_ok_for_base_p (int, machine_mode, bool);
68 extern int loongarch_address_insns (rtx, machine_mode, bool);
69 extern int loongarch_const_insns (rtx);
70 extern int loongarch_split_const_insns (rtx);
71 extern int loongarch_split_128bit_const_insns (rtx);
72 extern int loongarch_load_store_insns (rtx, rtx_insn *);
73 extern int loongarch_idiv_insns (machine_mode);
74 #ifdef RTX_CODE
75 extern void loongarch_emit_binary (enum rtx_code, rtx, rtx, rtx);
76 #endif
77 extern rtx loongarch_unspec_address (rtx, enum loongarch_symbol_type);
78 extern rtx loongarch_strip_unspec_address (rtx);
79 extern void loongarch_move_integer (rtx, rtx, unsigned HOST_WIDE_INT);
80 extern bool loongarch_legitimize_move (machine_mode, rtx, rtx);
81 extern rtx loongarch_legitimize_call_address (rtx);
82
83 extern rtx loongarch_subword (rtx, bool);
84 extern bool loongarch_split_move_p (rtx, rtx);
85 extern void loongarch_split_move (rtx, rtx, rtx);
86 extern const char *loongarch_output_move (rtx, rtx);
87 extern bool loongarch_cfun_has_cprestore_slot_p (void);
88 #ifdef RTX_CODE
89 extern void loongarch_expand_scc (rtx *);
90 extern void loongarch_expand_conditional_branch (rtx *);
91 extern void loongarch_expand_conditional_move (rtx *);
92 extern void loongarch_expand_conditional_trap (rtx);
93 #endif
94 extern void loongarch_set_return_address (rtx, rtx);
95 extern bool loongarch_move_by_pieces_p (unsigned HOST_WIDE_INT, unsigned int);
96 extern bool loongarch_expand_block_move (rtx, rtx, rtx);
97 extern bool loongarch_do_optimize_block_move_p (void);
98
99 extern bool loongarch_expand_ext_as_unaligned_load (rtx, rtx, HOST_WIDE_INT,
100 HOST_WIDE_INT, bool);
101 extern bool loongarch_expand_ins_as_unaligned_store (rtx, rtx, HOST_WIDE_INT,
102 HOST_WIDE_INT);
103 extern HOST_WIDE_INT loongarch_debugger_offset (rtx, HOST_WIDE_INT);
104
105 extern void loongarch_output_external (FILE *, tree, const char *);
106 extern void loongarch_output_ascii (FILE *, const char *, size_t);
107 extern bool loongarch_small_data_pattern_p (rtx);
108 extern rtx loongarch_rewrite_small_data (rtx);
109 extern rtx loongarch_return_addr (int, rtx);
110
111 extern enum reg_class loongarch_secondary_reload_class (enum reg_class,
112 machine_mode,
113 rtx, bool);
114 extern int loongarch_class_max_nregs (enum reg_class, machine_mode);
115
116 extern machine_mode loongarch_hard_regno_caller_save_mode (unsigned int,
117 unsigned int,
118 machine_mode);
119 extern int loongarch_adjust_insn_length (rtx_insn *, int);
120 extern const char *loongarch_output_conditional_branch (rtx_insn *, rtx *,
121 const char *,
122 const char *);
123 extern const char *loongarch_output_order_conditional_branch (rtx_insn *,
124 rtx *,
125 bool);
126 extern const char *loongarch_output_equal_conditional_branch (rtx_insn *,
127 rtx *,
128 bool);
129 extern const char *loongarch_output_division (const char *, rtx *);
130 extern const char *loongarch_output_probe_stack_range (rtx, rtx, rtx);
131 extern bool loongarch_hard_regno_rename_ok (unsigned int, unsigned int);
132 extern int loongarch_dspalu_bypass_p (rtx, rtx);
133 extern rtx loongarch_prefetch_cookie (rtx, rtx);
134
135 extern bool loongarch_global_symbol_p (const_rtx);
136 extern bool loongarch_global_symbol_noweak_p (const_rtx);
137 extern bool loongarch_weak_symbol_p (const_rtx);
138 extern bool loongarch_symbol_binds_local_p (const_rtx);
139
140 extern const char *current_section_name (void);
141 extern unsigned int current_section_flags (void);
142 extern bool loongarch_use_ins_ext_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
143 extern bool loongarch_check_zero_div_p (void);
144
145 union loongarch_gen_fn_ptrs
146 {
147 rtx (*fn_8) (rtx, rtx, rtx, rtx, rtx, rtx, rtx, rtx);
148 rtx (*fn_7) (rtx, rtx, rtx, rtx, rtx, rtx, rtx);
149 rtx (*fn_6) (rtx, rtx, rtx, rtx, rtx, rtx);
150 rtx (*fn_5) (rtx, rtx, rtx, rtx, rtx);
151 rtx (*fn_4) (rtx, rtx, rtx, rtx);
152 };
153
154 extern void loongarch_expand_atomic_qihi (union loongarch_gen_fn_ptrs,
155 rtx, rtx, rtx, rtx, rtx);
156
157 extern bool loongarch_signed_immediate_p (unsigned HOST_WIDE_INT, int, int);
158 extern bool loongarch_unsigned_immediate_p (unsigned HOST_WIDE_INT, int, int);
159 extern bool loongarch_12bit_offset_address_p (rtx, machine_mode);
160 extern bool loongarch_14bit_shifted_offset_address_p (rtx, machine_mode);
161 extern bool loongarch_base_index_address_p (rtx, machine_mode);
162 extern rtx loongarch_expand_thread_pointer (rtx);
163
164 extern bool loongarch_eh_uses (unsigned int);
165 extern bool loongarch_epilogue_uses (unsigned int);
166 extern bool loongarch_load_store_bonding_p (rtx *, machine_mode, bool);
167 extern bool loongarch_split_symbol_type (enum loongarch_symbol_type);
168
169 typedef rtx (*mulsidi3_gen_fn) (rtx, rtx, rtx);
170
171 extern void loongarch_register_frame_header_opt (void);
172
173 /* Routines implemented in loongarch-c.c. */
174 void loongarch_cpu_cpp_builtins (cpp_reader *);
175
176 extern void loongarch_init_builtins (void);
177 extern void loongarch_atomic_assign_expand_fenv (tree *, tree *, tree *);
178 extern tree loongarch_builtin_decl (unsigned int, bool);
179 extern rtx loongarch_expand_builtin (tree, rtx, rtx subtarget ATTRIBUTE_UNUSED,
180 machine_mode, int);
181 extern tree loongarch_build_builtin_va_list (void);
182
183 #endif /* ! GCC_LOONGARCH_PROTOS_H */