1 /* Prototypes of target machine for GNU compiler. MIPS version.
2 Copyright (C) 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
4 Contributed by A. Lichnewsky (lich@inria.inria.fr).
5 Changed by Michael Meissner (meissner@osf.org).
6 64-bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and
7 Brendan Eich (brendan@microunity.com).
9 This file is part of GCC.
11 GCC is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3, or (at your option)
16 GCC is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with GCC; see the file COPYING3. If not see
23 <http://www.gnu.org/licenses/>. */
25 #ifndef GCC_MIPS_PROTOS_H
26 #define GCC_MIPS_PROTOS_H
28 /* Describes how a symbol is used.
31 The symbol is used as the target of a call instruction.
34 The symbol is used in a load-address operation.
37 The symbol is used as the address in a MEM. */
38 enum mips_symbol_context {
44 /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address.
47 The symbol's value will be calculated using absolute relocations,
51 The symbol's value will be calculated by adding a 16-bit offset
55 The symbol's value will be calculated using a MIPS16 PC-relative
59 The symbol's value must be forced to memory and loaded from there.
62 The symbol's value will be calculated by loading an address
63 from the GOT and then applying a 16-bit offset.
66 The symbol's value will be loaded directly from the GOT.
69 An UNSPEC wrapper around a SYMBOL_GOT_PAGE_OFST. It represents the
70 offset from _gp of the GOT entry.
73 An UNSPEC wrapper around a SYMBOL_GOT_DISP. It represents the
74 the offset from _gp of the symbol's GOT entry.
77 Like SYMBOL_GOTOFF_DISP, but used when calling a global function.
78 The GOT entry is allowed to point to a stub rather than to the
82 An UNSPEC wrapper around a function's address. It represents the
83 offset of _gp from the start of the function.
86 A thread-local symbol.
93 UNSPEC wrappers around SYMBOL_TLS, corresponding to the
94 thread-local storage relocation operators.
97 For a 64-bit symbolic address X, this is the value of
98 (%highest(X) << 16) + %higher(X).
101 For a 64-bit symbolic address X, this is the value of
102 (%higher(X) << 16) + %hi(X).
105 For a 64-bit symbolic address X, this is the value of
106 (%hi(X) << 16) + %lo(X).
109 An UNSPEC wrapper around any kind of address. It represents the
110 low 16 bits of that address. */
111 enum mips_symbol_type {
116 SYMBOL_GOT_PAGE_OFST,
121 SYMBOL_GOTOFF_LOADGP,
133 #define NUM_SYMBOL_TYPES (SYMBOL_HALF + 1)
135 /* Identifiers a style of $gp initialization sequence.
138 No initialization sequence is needed.
141 The o32 and o64 PIC sequence (the kind traditionally generated
145 The n32 and n64 PIC sequence (the kind traditionally generated
149 The GNU absolute sequence, as generated by loadgp_absolute.
152 The VxWorks RTP PIC sequence, as generated by loadgp_rtp. */
153 enum mips_loadgp_style {
161 struct mips16e_save_restore_info;
163 extern bool mips_symbolic_constant_p (rtx, enum mips_symbol_context,
164 enum mips_symbol_type *);
165 extern int mips_regno_mode_ok_for_base_p (int, enum machine_mode, int);
166 extern bool mips_stack_address_p (rtx, enum machine_mode);
167 extern int mips_address_insns (rtx, enum machine_mode);
168 extern int mips_const_insns (rtx);
169 extern int mips_fetch_insns (rtx);
170 extern int mips_idiv_insns (void);
171 extern int fp_register_operand (rtx, enum machine_mode);
172 extern int lo_operand (rtx, enum machine_mode);
173 extern bool mips_legitimate_address_p (enum machine_mode, rtx, int);
174 extern rtx mips_split_symbol (rtx, rtx);
175 extern rtx mips_unspec_address (rtx, enum mips_symbol_type);
176 extern bool mips_legitimize_address (rtx *, enum machine_mode);
177 extern void mips_move_integer (rtx, rtx, unsigned HOST_WIDE_INT);
178 extern bool mips_legitimize_move (enum machine_mode, rtx, rtx);
180 extern int m16_uimm3_b (rtx, enum machine_mode);
181 extern int m16_simm4_1 (rtx, enum machine_mode);
182 extern int m16_nsimm4_1 (rtx, enum machine_mode);
183 extern int m16_simm5_1 (rtx, enum machine_mode);
184 extern int m16_nsimm5_1 (rtx, enum machine_mode);
185 extern int m16_uimm5_4 (rtx, enum machine_mode);
186 extern int m16_nuimm5_4 (rtx, enum machine_mode);
187 extern int m16_simm8_1 (rtx, enum machine_mode);
188 extern int m16_nsimm8_1 (rtx, enum machine_mode);
189 extern int m16_uimm8_1 (rtx, enum machine_mode);
190 extern int m16_nuimm8_1 (rtx, enum machine_mode);
191 extern int m16_uimm8_m1_1 (rtx, enum machine_mode);
192 extern int m16_uimm8_4 (rtx, enum machine_mode);
193 extern int m16_nuimm8_4 (rtx, enum machine_mode);
194 extern int m16_simm8_8 (rtx, enum machine_mode);
195 extern int m16_nsimm8_8 (rtx, enum machine_mode);
197 extern rtx mips_subword (rtx, int);
198 extern bool mips_split_64bit_move_p (rtx, rtx);
199 extern void mips_split_64bit_move (rtx, rtx);
200 extern const char *mips_output_move (rtx, rtx);
201 extern void mips_restore_gp (void);
203 extern bool mips_emit_scc (enum rtx_code, rtx);
204 extern void gen_conditional_branch (rtx *, enum rtx_code);
205 extern void mips_expand_vcondv2sf (rtx, rtx, rtx, enum rtx_code, rtx, rtx);
207 extern void gen_conditional_move (rtx *);
208 extern void mips_gen_conditional_trap (rtx *);
209 extern void mips_expand_call (rtx, rtx, rtx, rtx, int);
210 extern void mips_emit_fcc_reload (rtx, rtx, rtx);
211 extern void mips_set_return_address (rtx, rtx);
212 extern bool mips_expand_block_move (rtx, rtx, rtx);
213 extern void mips_expand_synci_loop (rtx, rtx);
215 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx);
216 extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,
218 extern struct rtx_def *function_arg (const CUMULATIVE_ARGS *,
219 enum machine_mode, tree, int);
220 extern int function_arg_boundary (enum machine_mode, tree);
221 extern bool mips_pad_arg_upward (enum machine_mode, tree);
222 extern bool mips_pad_reg_upward (enum machine_mode, tree);
223 extern void mips_va_start (tree, rtx);
225 extern bool mips_expand_unaligned_load (rtx, rtx, unsigned int, int);
226 extern bool mips_expand_unaligned_store (rtx, rtx, unsigned int, int);
227 extern bool mips_mem_fits_mode_p (enum machine_mode mode, rtx x);
228 extern void override_options (void);
229 extern void mips_conditional_register_usage (void);
230 extern void mips_order_regs_for_local_alloc (void);
231 extern HOST_WIDE_INT mips_debugger_offset (rtx, HOST_WIDE_INT);
233 extern void print_operand (FILE *, rtx, int);
234 extern void print_operand_address (FILE *, rtx);
235 extern void mips_output_external (FILE *, tree, const char *);
236 extern void mips_output_filename (FILE *, const char *);
237 extern void mips_output_ascii (FILE *, const char *, size_t, const char *);
238 extern void mips_output_aligned_bss (FILE *, tree, const char *,
239 unsigned HOST_WIDE_INT, int);
240 extern void mips_output_aligned_decl_common (FILE *, tree, const char *,
241 unsigned HOST_WIDE_INT,
243 extern void mips_declare_common_object (FILE *, const char *,
244 const char *, unsigned HOST_WIDE_INT,
246 extern void mips_declare_object (FILE *, const char *, const char *,
247 const char *, ...) ATTRIBUTE_PRINTF_4;
248 extern void mips_declare_object_name (FILE *, const char *, tree);
249 extern void mips_finish_declare_object (FILE *, tree, int, int);
251 extern bool mips_small_data_pattern_p (rtx);
252 extern rtx mips_rewrite_small_data (rtx);
253 extern HOST_WIDE_INT compute_frame_size (HOST_WIDE_INT);
254 extern HOST_WIDE_INT mips_initial_elimination_offset (int, int);
255 extern rtx mips_return_addr (int, rtx);
256 extern enum mips_loadgp_style mips_current_loadgp_style (void);
257 extern void mips_expand_prologue (void);
258 extern void mips_expand_epilogue (int);
259 extern int mips_can_use_return_insn (void);
260 extern struct rtx_def *mips_function_value (tree, tree, enum machine_mode);
262 extern bool mips_cannot_change_mode_class (enum machine_mode,
263 enum machine_mode, enum reg_class);
264 extern bool mips_dangerous_for_la25_p (rtx);
265 extern enum reg_class mips_preferred_reload_class (rtx, enum reg_class);
266 extern enum reg_class mips_secondary_reload_class (enum reg_class,
269 extern int mips_class_max_nregs (enum reg_class, enum machine_mode);
270 extern int build_mips16_call_stub (rtx, rtx, rtx, int);
271 extern int mips_register_move_cost (enum machine_mode, enum reg_class,
274 extern int mips_adjust_insn_length (rtx, int);
275 extern const char *mips_output_load_label (void);
276 extern const char *mips_output_conditional_branch (rtx, rtx *, const char *,
278 extern const char *mips_output_order_conditional_branch (rtx, rtx *, bool);
279 extern const char *mips_output_division (const char *, rtx *);
280 extern unsigned int mips_hard_regno_nregs (int, enum machine_mode);
281 extern bool mips_linked_madd_p (rtx, rtx);
282 extern int mips_store_data_bypass_p (rtx, rtx);
283 extern rtx mips_prefetch_cookie (rtx, rtx);
285 extern void irix_asm_output_align (FILE *, unsigned);
286 extern const char *current_section_name (void);
287 extern unsigned int current_section_flags (void);
288 extern bool mips_use_ins_ext_p (rtx, rtx, rtx);
290 extern const char *mips16e_output_save_restore (rtx, HOST_WIDE_INT);
291 extern bool mips16e_save_restore_pattern_p (rtx, HOST_WIDE_INT,
292 struct mips16e_save_restore_info *);
294 #endif /* ! GCC_MIPS_PROTOS_H */