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 32-bit symbolic address X, this is the value of %hi(X).
100 For a 64-bit symbolic address X, this is the value of
101 (%highest(X) << 16) + %higher(X).
104 For a 64-bit symbolic address X, this is the value of
105 (%higher(X) << 16) + %hi(X).
108 For a 64-bit symbolic address X, this is the value of
109 (%hi(X) << 16) + %lo(X).
112 An UNSPEC wrapper around any kind of address. It represents the
113 low 16 bits of that address. */
114 enum mips_symbol_type {
119 SYMBOL_GOT_PAGE_OFST,
124 SYMBOL_GOTOFF_LOADGP,
137 #define NUM_SYMBOL_TYPES (SYMBOL_HALF + 1)
139 /* Identifiers a style of $gp initialization sequence.
142 No initialization sequence is needed.
145 The o32 and o64 PIC sequence (the kind traditionally generated
149 The n32 and n64 PIC sequence (the kind traditionally generated
153 The GNU absolute sequence, as generated by loadgp_absolute.
156 The VxWorks RTP PIC sequence, as generated by loadgp_rtp. */
157 enum mips_loadgp_style {
165 struct mips16e_save_restore_info;
167 extern bool mips_symbolic_constant_p (rtx, enum mips_symbol_context,
168 enum mips_symbol_type *);
169 extern int mips_regno_mode_ok_for_base_p (int, enum machine_mode, int);
170 extern bool mips_stack_address_p (rtx, enum machine_mode);
171 extern int mips_address_insns (rtx, enum machine_mode, bool);
172 extern int mips_const_insns (rtx);
173 extern int mips_load_store_insns (rtx, rtx);
174 extern int mips_idiv_insns (void);
175 extern int fp_register_operand (rtx, enum machine_mode);
176 extern int lo_operand (rtx, enum machine_mode);
177 extern bool mips_legitimate_address_p (enum machine_mode, rtx, int);
178 extern rtx mips_emit_move (rtx, rtx);
179 extern bool mips_split_symbol (rtx, rtx, enum machine_mode, rtx *);
180 extern rtx mips_unspec_address (rtx, enum mips_symbol_type);
181 extern bool mips_legitimize_address (rtx *, enum machine_mode);
182 extern void mips_move_integer (rtx, rtx, unsigned HOST_WIDE_INT);
183 extern bool mips_legitimize_move (enum machine_mode, rtx, rtx);
185 extern int m16_uimm3_b (rtx, enum machine_mode);
186 extern int m16_simm4_1 (rtx, enum machine_mode);
187 extern int m16_nsimm4_1 (rtx, enum machine_mode);
188 extern int m16_simm5_1 (rtx, enum machine_mode);
189 extern int m16_nsimm5_1 (rtx, enum machine_mode);
190 extern int m16_uimm5_4 (rtx, enum machine_mode);
191 extern int m16_nuimm5_4 (rtx, enum machine_mode);
192 extern int m16_simm8_1 (rtx, enum machine_mode);
193 extern int m16_nsimm8_1 (rtx, enum machine_mode);
194 extern int m16_uimm8_1 (rtx, enum machine_mode);
195 extern int m16_nuimm8_1 (rtx, enum machine_mode);
196 extern int m16_uimm8_m1_1 (rtx, enum machine_mode);
197 extern int m16_uimm8_4 (rtx, enum machine_mode);
198 extern int m16_nuimm8_4 (rtx, enum machine_mode);
199 extern int m16_simm8_8 (rtx, enum machine_mode);
200 extern int m16_nsimm8_8 (rtx, enum machine_mode);
202 extern rtx mips_subword (rtx, int);
203 extern bool mips_split_64bit_move_p (rtx, rtx);
204 extern void mips_split_doubleword_move (rtx, rtx);
205 extern const char *mips_output_move (rtx, rtx);
206 extern void mips_restore_gp (void);
208 extern bool mips_emit_scc (enum rtx_code, rtx);
209 extern void gen_conditional_branch (rtx *, enum rtx_code);
210 extern void mips_expand_vcondv2sf (rtx, rtx, rtx, enum rtx_code, rtx, rtx);
212 extern void gen_conditional_move (rtx *);
213 extern void mips_gen_conditional_trap (rtx *);
214 extern void mips_expand_call (rtx, rtx, rtx, rtx, int);
215 extern void mips_emit_fcc_reload (rtx, rtx, rtx);
216 extern void mips_set_return_address (rtx, rtx);
217 extern bool mips_expand_block_move (rtx, rtx, rtx);
218 extern void mips_expand_synci_loop (rtx, rtx);
220 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx);
221 extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,
223 extern struct rtx_def *function_arg (const CUMULATIVE_ARGS *,
224 enum machine_mode, tree, int);
225 extern int function_arg_boundary (enum machine_mode, tree);
226 extern bool mips_pad_arg_upward (enum machine_mode, const_tree);
227 extern bool mips_pad_reg_upward (enum machine_mode, tree);
228 extern void mips_va_start (tree, rtx);
230 extern bool mips_expand_unaligned_load (rtx, rtx, unsigned int, int);
231 extern bool mips_expand_unaligned_store (rtx, rtx, unsigned int, int);
232 extern bool mips_mem_fits_mode_p (enum machine_mode mode, rtx x);
233 extern void override_options (void);
234 extern void mips_conditional_register_usage (void);
235 extern void mips_order_regs_for_local_alloc (void);
236 extern HOST_WIDE_INT mips_debugger_offset (rtx, HOST_WIDE_INT);
238 extern void print_operand (FILE *, rtx, int);
239 extern void print_operand_address (FILE *, rtx);
240 extern void mips_output_external (FILE *, tree, const char *);
241 extern void mips_output_filename (FILE *, const char *);
242 extern void mips_output_ascii (FILE *, const char *, size_t, const char *);
243 extern void mips_output_aligned_bss (FILE *, tree, const char *,
244 unsigned HOST_WIDE_INT, int);
245 extern void mips_output_aligned_decl_common (FILE *, tree, const char *,
246 unsigned HOST_WIDE_INT,
248 extern void mips_declare_common_object (FILE *, const char *,
249 const char *, unsigned HOST_WIDE_INT,
251 extern void mips_declare_object (FILE *, const char *, const char *,
252 const char *, ...) ATTRIBUTE_PRINTF_4;
253 extern void mips_declare_object_name (FILE *, const char *, tree);
254 extern void mips_finish_declare_object (FILE *, tree, int, int);
256 extern bool mips_small_data_pattern_p (rtx);
257 extern rtx mips_rewrite_small_data (rtx);
258 extern bool mips_frame_pointer_required (void);
259 extern HOST_WIDE_INT mips_initial_elimination_offset (int, int);
260 extern rtx mips_return_addr (int, rtx);
261 extern enum mips_loadgp_style mips_current_loadgp_style (void);
262 extern void mips_expand_prologue (void);
263 extern void mips_expand_epilogue (int);
264 extern int mips_can_use_return_insn (void);
265 extern struct rtx_def *mips_function_value (const_tree, const_tree, enum machine_mode);
267 extern bool mips_cannot_change_mode_class (enum machine_mode,
268 enum machine_mode, enum reg_class);
269 extern bool mips_dangerous_for_la25_p (rtx);
270 extern bool mips_modes_tieable_p (enum machine_mode, enum machine_mode);
271 extern enum reg_class mips_preferred_reload_class (rtx, enum reg_class);
272 extern enum reg_class mips_secondary_reload_class (enum reg_class,
275 extern int mips_class_max_nregs (enum reg_class, enum machine_mode);
276 extern int build_mips16_call_stub (rtx, rtx, rtx, int);
277 extern int mips_register_move_cost (enum machine_mode, enum reg_class,
280 extern int mips_adjust_insn_length (rtx, int);
281 extern const char *mips_output_load_label (void);
282 extern const char *mips_output_conditional_branch (rtx, rtx *, const char *,
284 extern const char *mips_output_order_conditional_branch (rtx, rtx *, bool);
285 extern const char *mips_output_division (const char *, rtx *);
286 extern unsigned int mips_hard_regno_nregs (int, enum machine_mode);
287 extern bool mips_linked_madd_p (rtx, rtx);
288 extern int mips_store_data_bypass_p (rtx, rtx);
289 extern rtx mips_prefetch_cookie (rtx, rtx);
291 extern void irix_asm_output_align (FILE *, unsigned);
292 extern const char *current_section_name (void);
293 extern unsigned int current_section_flags (void);
294 extern bool mips_use_ins_ext_p (rtx, rtx, rtx);
296 extern const char *mips16e_output_save_restore (rtx, HOST_WIDE_INT);
297 extern bool mips16e_save_restore_pattern_p (rtx, HOST_WIDE_INT,
298 struct mips16e_save_restore_info *);
300 #endif /* ! GCC_MIPS_PROTOS_H */