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340f6494 | 1 | /* Subroutines for insn-output.c for Renesas H8/300. |
d1e082c2 | 2 | Copyright (C) 1992-2013 Free Software Foundation, Inc. |
48837e29 DE |
3 | Contributed by Steve Chamberlain (sac@cygnus.com), |
4 | Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com). | |
07aae5c2 | 5 | |
8aa063fb | 6 | This file is part of GCC. |
07aae5c2 | 7 | |
8aa063fb | 8 | GCC is free software; you can redistribute it and/or modify |
07aae5c2 | 9 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
07aae5c2 SC |
11 | any later version. |
12 | ||
8aa063fb | 13 | GCC is distributed in the hope that it will be useful, |
07aae5c2 SC |
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 | |
2f83c7d6 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
07aae5c2 | 21 | |
07aae5c2 | 22 | #include "config.h" |
c5c76735 | 23 | #include "system.h" |
4977bab6 ZW |
24 | #include "coretypes.h" |
25 | #include "tm.h" | |
07aae5c2 | 26 | #include "rtl.h" |
bf6bb899 | 27 | #include "tree.h" |
d8a2d370 DN |
28 | #include "stor-layout.h" |
29 | #include "varasm.h" | |
30 | #include "calls.h" | |
31 | #include "stringpool.h" | |
07aae5c2 SC |
32 | #include "regs.h" |
33 | #include "hard-reg-set.h" | |
07aae5c2 SC |
34 | #include "insn-config.h" |
35 | #include "conditions.h" | |
07aae5c2 SC |
36 | #include "output.h" |
37 | #include "insn-attr.h" | |
38 | #include "flags.h" | |
39 | #include "recog.h" | |
40 | #include "expr.h" | |
bf6bb899 | 41 | #include "function.h" |
c15c90bb | 42 | #include "optabs.h" |
718f9c0f | 43 | #include "diagnostic-core.h" |
39dabefd | 44 | #include "c-family/c-pragma.h" /* ??? */ |
441d04c6 | 45 | #include "tm_p.h" |
ceaaaeab | 46 | #include "tm-constrs.h" |
f2a9645f | 47 | #include "ggc.h" |
672a6f42 NB |
48 | #include "target.h" |
49 | #include "target-def.h" | |
9690aa8e | 50 | #include "df.h" |
07aae5c2 | 51 | |
beed8fc0 AO |
52 | /* Classifies a h8300_src_operand or h8300_dst_operand. |
53 | ||
54 | H8OP_IMMEDIATE | |
55 | A constant operand of some sort. | |
56 | ||
57 | H8OP_REGISTER | |
58 | An ordinary register. | |
59 | ||
60 | H8OP_MEM_ABSOLUTE | |
61 | A memory reference with a constant address. | |
62 | ||
63 | H8OP_MEM_BASE | |
64 | A memory reference with a register as its address. | |
65 | ||
66 | H8OP_MEM_COMPLEX | |
67 | Some other kind of memory reference. */ | |
68 | enum h8300_operand_class | |
69 | { | |
70 | H8OP_IMMEDIATE, | |
71 | H8OP_REGISTER, | |
72 | H8OP_MEM_ABSOLUTE, | |
73 | H8OP_MEM_BASE, | |
74 | H8OP_MEM_COMPLEX, | |
75 | NUM_H8OPS | |
76 | }; | |
77 | ||
beed8fc0 AO |
78 | /* For a general two-operand instruction, element [X][Y] gives |
79 | the length of the opcode fields when the first operand has class | |
80 | (X + 1) and the second has class Y. */ | |
81 | typedef unsigned char h8300_length_table[NUM_H8OPS - 1][NUM_H8OPS]; | |
82 | ||
07aae5c2 | 83 | /* Forward declarations. */ |
cb713a8d KH |
84 | static const char *byte_reg (rtx, int); |
85 | static int h8300_interrupt_function_p (tree); | |
3cfa3702 | 86 | static int h8300_saveall_function_p (tree); |
cb713a8d KH |
87 | static int h8300_monitor_function_p (tree); |
88 | static int h8300_os_task_function_p (tree); | |
c72ea086 | 89 | static void h8300_emit_stack_adjustment (int, HOST_WIDE_INT, bool); |
e68d4dd1 | 90 | static HOST_WIDE_INT round_frame_size (HOST_WIDE_INT); |
cb713a8d | 91 | static unsigned int compute_saved_regs (void); |
cb713a8d KH |
92 | static const char *cond_string (enum rtx_code); |
93 | static unsigned int h8300_asm_insn_count (const char *); | |
cb713a8d KH |
94 | static tree h8300_handle_fndecl_attribute (tree *, tree, tree, int, bool *); |
95 | static tree h8300_handle_eightbit_data_attribute (tree *, tree, tree, int, bool *); | |
96 | static tree h8300_handle_tiny_data_attribute (tree *, tree, tree, int, bool *); | |
88cb339e N |
97 | static void h8300_print_operand_address (FILE *, rtx); |
98 | static void h8300_print_operand (FILE *, rtx, int); | |
99 | static bool h8300_print_operand_punct_valid_p (unsigned char code); | |
ede75ee8 | 100 | #ifndef OBJECT_FORMAT_ELF |
c18a5b6c | 101 | static void h8300_asm_named_section (const char *, unsigned int, tree); |
ede75ee8 | 102 | #endif |
88cb339e | 103 | static int h8300_register_move_cost (enum machine_mode, reg_class_t, reg_class_t); |
cb713a8d KH |
104 | static int h8300_and_costs (rtx); |
105 | static int h8300_shift_costs (rtx); | |
ac447f25 | 106 | static void h8300_push_pop (int, int, bool, bool); |
beed8fc0 AO |
107 | static int h8300_stack_offset_p (rtx, int); |
108 | static int h8300_ldm_stm_regno (rtx, int, int, int); | |
beed8fc0 AO |
109 | static void h8300_reorg (void); |
110 | static unsigned int h8300_constant_length (rtx); | |
111 | static unsigned int h8300_displacement_length (rtx, int); | |
112 | static unsigned int h8300_classify_operand (rtx, int, enum h8300_operand_class *); | |
113 | static unsigned int h8300_length_from_table (rtx, rtx, const h8300_length_table *); | |
114 | static unsigned int h8300_unary_length (rtx); | |
115 | static unsigned int h8300_short_immediate_length (rtx); | |
116 | static unsigned int h8300_bitfield_length (rtx, rtx); | |
117 | static unsigned int h8300_binary_length (rtx, const h8300_length_table *); | |
118 | static bool h8300_short_move_mem_p (rtx, enum rtx_code); | |
119 | static unsigned int h8300_move_length (rtx *, const h8300_length_table *); | |
2e762884 | 120 | static bool h8300_hard_regno_scratch_ok (unsigned int); |
f52d97da | 121 | static rtx h8300_get_index (rtx, enum machine_mode mode, int *); |
f5b65a56 | 122 | |
48837e29 DE |
123 | /* CPU_TYPE, says what cpu we're compiling for. */ |
124 | int cpu_type; | |
125 | ||
e392d367 KH |
126 | /* True if a #pragma interrupt has been seen for the current function. */ |
127 | static int pragma_interrupt; | |
07aae5c2 SC |
128 | |
129 | /* True if a #pragma saveall has been seen for the current function. */ | |
0869f126 | 130 | static int pragma_saveall; |
07aae5c2 | 131 | |
441d04c6 | 132 | static const char *const names_big[] = |
07e4d94e | 133 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7" }; |
48837e29 | 134 | |
441d04c6 | 135 | static const char *const names_extended[] = |
07e4d94e | 136 | { "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7" }; |
48837e29 | 137 | |
441d04c6 | 138 | static const char *const names_upper_extended[] = |
07e4d94e | 139 | { "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7" }; |
48837e29 DE |
140 | |
141 | /* Points to one of the above. */ | |
142 | /* ??? The above could be put in an array indexed by CPU_TYPE. */ | |
441d04c6 | 143 | const char * const *h8_reg_names; |
48837e29 DE |
144 | |
145 | /* Various operations needed by the following, indexed by CPU_TYPE. */ | |
48837e29 | 146 | |
441d04c6 | 147 | const char *h8_push_op, *h8_pop_op, *h8_mov_op; |
dc66a1c4 | 148 | |
beed8fc0 AO |
149 | /* Value of MOVE_RATIO. */ |
150 | int h8300_move_ratio; | |
672a6f42 | 151 | \f |
c4dfc70c DD |
152 | /* See below where shifts are handled for explanation of this enum. */ |
153 | ||
154 | enum shift_alg | |
155 | { | |
156 | SHIFT_INLINE, | |
157 | SHIFT_ROT_AND, | |
158 | SHIFT_SPECIAL, | |
159 | SHIFT_LOOP | |
160 | }; | |
161 | ||
162 | /* Symbols of the various shifts which can be used as indices. */ | |
163 | ||
164 | enum shift_type | |
165 | { | |
166 | SHIFT_ASHIFT, SHIFT_LSHIFTRT, SHIFT_ASHIFTRT | |
167 | }; | |
168 | ||
169 | /* Macros to keep the shift algorithm tables small. */ | |
170 | #define INL SHIFT_INLINE | |
171 | #define ROT SHIFT_ROT_AND | |
172 | #define LOP SHIFT_LOOP | |
173 | #define SPC SHIFT_SPECIAL | |
174 | ||
175 | /* The shift algorithms for each machine, mode, shift type, and shift | |
176 | count are defined below. The three tables below correspond to | |
177 | QImode, HImode, and SImode, respectively. Each table is organized | |
f411c849 | 178 | by, in the order of indices, machine, shift type, and shift count. */ |
c4dfc70c DD |
179 | |
180 | static enum shift_alg shift_alg_qi[3][3][8] = { | |
181 | { | |
182 | /* TARGET_H8300 */ | |
183 | /* 0 1 2 3 4 5 6 7 */ | |
184 | { INL, INL, INL, INL, INL, ROT, ROT, ROT }, /* SHIFT_ASHIFT */ | |
185 | { INL, INL, INL, INL, INL, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
186 | { INL, INL, INL, INL, INL, LOP, LOP, SPC } /* SHIFT_ASHIFTRT */ | |
187 | }, | |
188 | { | |
189 | /* TARGET_H8300H */ | |
190 | /* 0 1 2 3 4 5 6 7 */ | |
191 | { INL, INL, INL, INL, INL, ROT, ROT, ROT }, /* SHIFT_ASHIFT */ | |
192 | { INL, INL, INL, INL, INL, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
193 | { INL, INL, INL, INL, INL, LOP, LOP, SPC } /* SHIFT_ASHIFTRT */ | |
194 | }, | |
195 | { | |
196 | /* TARGET_H8300S */ | |
197 | /* 0 1 2 3 4 5 6 7 */ | |
198 | { INL, INL, INL, INL, INL, INL, ROT, ROT }, /* SHIFT_ASHIFT */ | |
199 | { INL, INL, INL, INL, INL, INL, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
200 | { INL, INL, INL, INL, INL, INL, INL, SPC } /* SHIFT_ASHIFTRT */ | |
201 | } | |
202 | }; | |
203 | ||
204 | static enum shift_alg shift_alg_hi[3][3][16] = { | |
205 | { | |
206 | /* TARGET_H8300 */ | |
207 | /* 0 1 2 3 4 5 6 7 */ | |
208 | /* 8 9 10 11 12 13 14 15 */ | |
209 | { INL, INL, INL, INL, INL, INL, INL, SPC, | |
210 | SPC, SPC, SPC, SPC, SPC, SPC, SPC, SPC }, /* SHIFT_ASHIFT */ | |
211 | { INL, INL, INL, INL, INL, LOP, LOP, SPC, | |
212 | SPC, SPC, SPC, SPC, SPC, SPC, SPC, SPC }, /* SHIFT_LSHIFTRT */ | |
213 | { INL, INL, INL, INL, INL, LOP, LOP, SPC, | |
214 | SPC, SPC, SPC, SPC, SPC, SPC, SPC, SPC }, /* SHIFT_ASHIFTRT */ | |
215 | }, | |
216 | { | |
217 | /* TARGET_H8300H */ | |
218 | /* 0 1 2 3 4 5 6 7 */ | |
219 | /* 8 9 10 11 12 13 14 15 */ | |
220 | { INL, INL, INL, INL, INL, INL, INL, SPC, | |
221 | SPC, SPC, SPC, SPC, SPC, ROT, ROT, ROT }, /* SHIFT_ASHIFT */ | |
222 | { INL, INL, INL, INL, INL, INL, INL, SPC, | |
223 | SPC, SPC, SPC, SPC, SPC, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
224 | { INL, INL, INL, INL, INL, INL, INL, SPC, | |
225 | SPC, SPC, SPC, SPC, SPC, SPC, SPC, SPC }, /* SHIFT_ASHIFTRT */ | |
226 | }, | |
227 | { | |
228 | /* TARGET_H8300S */ | |
229 | /* 0 1 2 3 4 5 6 7 */ | |
230 | /* 8 9 10 11 12 13 14 15 */ | |
231 | { INL, INL, INL, INL, INL, INL, INL, INL, | |
232 | SPC, SPC, SPC, SPC, SPC, ROT, ROT, ROT }, /* SHIFT_ASHIFT */ | |
233 | { INL, INL, INL, INL, INL, INL, INL, INL, | |
234 | SPC, SPC, SPC, SPC, SPC, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
235 | { INL, INL, INL, INL, INL, INL, INL, INL, | |
236 | SPC, SPC, SPC, SPC, SPC, SPC, SPC, SPC }, /* SHIFT_ASHIFTRT */ | |
237 | } | |
238 | }; | |
239 | ||
240 | static enum shift_alg shift_alg_si[3][3][32] = { | |
241 | { | |
242 | /* TARGET_H8300 */ | |
243 | /* 0 1 2 3 4 5 6 7 */ | |
244 | /* 8 9 10 11 12 13 14 15 */ | |
245 | /* 16 17 18 19 20 21 22 23 */ | |
246 | /* 24 25 26 27 28 29 30 31 */ | |
247 | { INL, INL, INL, LOP, LOP, LOP, LOP, LOP, | |
248 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP, | |
249 | SPC, SPC, SPC, SPC, SPC, LOP, LOP, LOP, | |
250 | SPC, SPC, SPC, SPC, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFT */ | |
251 | { INL, INL, INL, LOP, LOP, LOP, LOP, LOP, | |
252 | SPC, SPC, LOP, LOP, LOP, LOP, LOP, SPC, | |
253 | SPC, SPC, SPC, LOP, LOP, LOP, LOP, LOP, | |
254 | SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_LSHIFTRT */ | |
255 | { INL, INL, INL, LOP, LOP, LOP, LOP, LOP, | |
256 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC, | |
257 | SPC, SPC, LOP, LOP, LOP, LOP, LOP, LOP, | |
258 | SPC, SPC, SPC, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */ | |
259 | }, | |
260 | { | |
261 | /* TARGET_H8300H */ | |
262 | /* 0 1 2 3 4 5 6 7 */ | |
263 | /* 8 9 10 11 12 13 14 15 */ | |
264 | /* 16 17 18 19 20 21 22 23 */ | |
265 | /* 24 25 26 27 28 29 30 31 */ | |
266 | { INL, INL, INL, INL, INL, LOP, LOP, LOP, | |
267 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC, | |
268 | SPC, SPC, SPC, SPC, LOP, LOP, LOP, LOP, | |
1e5bdc40 | 269 | SPC, LOP, LOP, LOP, SPC, SPC, SPC, SPC }, /* SHIFT_ASHIFT */ |
c4dfc70c DD |
270 | { INL, INL, INL, INL, INL, LOP, LOP, LOP, |
271 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC, | |
272 | SPC, SPC, SPC, SPC, LOP, LOP, LOP, LOP, | |
1e5bdc40 | 273 | SPC, LOP, LOP, LOP, SPC, SPC, SPC, SPC }, /* SHIFT_LSHIFTRT */ |
c4dfc70c DD |
274 | { INL, INL, INL, INL, INL, LOP, LOP, LOP, |
275 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP, | |
276 | SPC, SPC, SPC, SPC, LOP, LOP, LOP, LOP, | |
277 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */ | |
278 | }, | |
279 | { | |
280 | /* TARGET_H8300S */ | |
281 | /* 0 1 2 3 4 5 6 7 */ | |
282 | /* 8 9 10 11 12 13 14 15 */ | |
283 | /* 16 17 18 19 20 21 22 23 */ | |
284 | /* 24 25 26 27 28 29 30 31 */ | |
285 | { INL, INL, INL, INL, INL, INL, INL, INL, | |
286 | INL, INL, INL, LOP, LOP, LOP, LOP, SPC, | |
287 | SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP, | |
1e5bdc40 | 288 | SPC, SPC, LOP, LOP, SPC, SPC, SPC, SPC }, /* SHIFT_ASHIFT */ |
c4dfc70c DD |
289 | { INL, INL, INL, INL, INL, INL, INL, INL, |
290 | INL, INL, INL, LOP, LOP, LOP, LOP, SPC, | |
291 | SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP, | |
1e5bdc40 | 292 | SPC, SPC, LOP, LOP, SPC, SPC, SPC, SPC }, /* SHIFT_LSHIFTRT */ |
c4dfc70c DD |
293 | { INL, INL, INL, INL, INL, INL, INL, INL, |
294 | INL, INL, INL, LOP, LOP, LOP, LOP, LOP, | |
295 | SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP, | |
296 | SPC, SPC, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */ | |
297 | } | |
298 | }; | |
299 | ||
300 | #undef INL | |
301 | #undef ROT | |
302 | #undef LOP | |
303 | #undef SPC | |
304 | ||
305 | enum h8_cpu | |
306 | { | |
307 | H8_300, | |
308 | H8_300H, | |
309 | H8_S | |
310 | }; | |
311 | ||
48837e29 DE |
312 | /* Initialize various cpu specific globals at start up. */ |
313 | ||
c5387660 JM |
314 | static void |
315 | h8300_option_override (void) | |
48837e29 | 316 | { |
cbf1b2da KH |
317 | static const char *const h8_push_ops[2] = { "push" , "push.l" }; |
318 | static const char *const h8_pop_ops[2] = { "pop" , "pop.l" }; | |
319 | static const char *const h8_mov_ops[2] = { "mov.w", "mov.l" }; | |
320 | ||
f4ea8112 SKS |
321 | #ifndef OBJECT_FORMAT_ELF |
322 | if (TARGET_H8300SX) | |
323 | { | |
324 | error ("-msx is not supported in coff"); | |
325 | target_flags |= MASK_H8300S; | |
326 | } | |
327 | #endif | |
328 | ||
48837e29 DE |
329 | if (TARGET_H8300) |
330 | { | |
331 | cpu_type = (int) CPU_H8300; | |
332 | h8_reg_names = names_big; | |
333 | } | |
334 | else | |
335 | { | |
3db11b5c | 336 | /* For this we treat the H8/300H and H8S the same. */ |
48837e29 DE |
337 | cpu_type = (int) CPU_H8300H; |
338 | h8_reg_names = names_extended; | |
339 | } | |
340 | h8_push_op = h8_push_ops[cpu_type]; | |
341 | h8_pop_op = h8_pop_ops[cpu_type]; | |
342 | h8_mov_op = h8_mov_ops[cpu_type]; | |
17f0f8fa KH |
343 | |
344 | if (!TARGET_H8300S && TARGET_MAC) | |
400500c4 | 345 | { |
c725bd79 | 346 | error ("-ms2600 is used without -ms"); |
5463c726 | 347 | target_flags |= MASK_H8300S_1; |
400500c4 | 348 | } |
920e86b8 | 349 | |
39ba95b5 VK |
350 | if (TARGET_H8300 && TARGET_NORMAL_MODE) |
351 | { | |
f4ea8112 | 352 | error ("-mn is used without -mh or -ms or -msx"); |
39ba95b5 VK |
353 | target_flags ^= MASK_NORMAL_MODE; |
354 | } | |
c4dfc70c | 355 | |
f4ea8112 SKS |
356 | if (! TARGET_H8300S && TARGET_EXR) |
357 | { | |
358 | error ("-mexr is used without -ms"); | |
359 | target_flags |= MASK_H8300S_1; | |
360 | } | |
361 | ||
362 | if (TARGET_H8300 && TARGET_INT32) | |
363 | { | |
364 | error ("-mint32 is not supported for H8300 and H8300L targets"); | |
365 | target_flags ^= MASK_INT32; | |
366 | } | |
367 | ||
368 | if ((!TARGET_H8300S && TARGET_EXR) && (!TARGET_H8300SX && TARGET_EXR)) | |
369 | { | |
370 | error ("-mexr is used without -ms or -msx"); | |
371 | target_flags |= MASK_H8300S_1; | |
372 | } | |
373 | ||
374 | if ((!TARGET_H8300S && TARGET_NEXR) && (!TARGET_H8300SX && TARGET_NEXR)) | |
375 | { | |
376 | warning (OPT_mno_exr, "-mno-exr valid only with -ms or -msx \ | |
377 | - Option ignored!"); | |
378 | } | |
379 | ||
8bd06267 | 380 | /* Some of the shifts are optimized for speed by default. |
c4dfc70c | 381 | See http://gcc.gnu.org/ml/gcc-patches/2002-07/msg01858.html |
8bd06267 | 382 | If optimizing for size, change shift_alg for those shift to |
c4dfc70c | 383 | SHIFT_LOOP. */ |
b6894857 | 384 | if (optimize_size) |
c4dfc70c | 385 | { |
b6894857 KH |
386 | /* H8/300 */ |
387 | shift_alg_hi[H8_300][SHIFT_ASHIFT][5] = SHIFT_LOOP; | |
388 | shift_alg_hi[H8_300][SHIFT_ASHIFT][6] = SHIFT_LOOP; | |
389 | shift_alg_hi[H8_300][SHIFT_ASHIFT][13] = SHIFT_LOOP; | |
390 | shift_alg_hi[H8_300][SHIFT_ASHIFT][14] = SHIFT_LOOP; | |
c4dfc70c | 391 | |
b6894857 KH |
392 | shift_alg_hi[H8_300][SHIFT_LSHIFTRT][13] = SHIFT_LOOP; |
393 | shift_alg_hi[H8_300][SHIFT_LSHIFTRT][14] = SHIFT_LOOP; | |
c4dfc70c | 394 | |
b6894857 KH |
395 | shift_alg_hi[H8_300][SHIFT_ASHIFTRT][13] = SHIFT_LOOP; |
396 | shift_alg_hi[H8_300][SHIFT_ASHIFTRT][14] = SHIFT_LOOP; | |
c4dfc70c | 397 | |
b6894857 KH |
398 | /* H8/300H */ |
399 | shift_alg_hi[H8_300H][SHIFT_ASHIFT][5] = SHIFT_LOOP; | |
400 | shift_alg_hi[H8_300H][SHIFT_ASHIFT][6] = SHIFT_LOOP; | |
c4dfc70c | 401 | |
b6894857 KH |
402 | shift_alg_hi[H8_300H][SHIFT_LSHIFTRT][5] = SHIFT_LOOP; |
403 | shift_alg_hi[H8_300H][SHIFT_LSHIFTRT][6] = SHIFT_LOOP; | |
c4dfc70c | 404 | |
b6894857 KH |
405 | shift_alg_hi[H8_300H][SHIFT_ASHIFTRT][5] = SHIFT_LOOP; |
406 | shift_alg_hi[H8_300H][SHIFT_ASHIFTRT][6] = SHIFT_LOOP; | |
407 | shift_alg_hi[H8_300H][SHIFT_ASHIFTRT][13] = SHIFT_LOOP; | |
408 | shift_alg_hi[H8_300H][SHIFT_ASHIFTRT][14] = SHIFT_LOOP; | |
c4dfc70c DD |
409 | |
410 | /* H8S */ | |
b6894857 | 411 | shift_alg_hi[H8_S][SHIFT_ASHIFTRT][14] = SHIFT_LOOP; |
c4dfc70c | 412 | } |
beed8fc0 AO |
413 | |
414 | /* Work out a value for MOVE_RATIO. */ | |
415 | if (!TARGET_H8300SX) | |
416 | { | |
417 | /* Memory-memory moves are quite expensive without the | |
418 | h8sx instructions. */ | |
419 | h8300_move_ratio = 3; | |
420 | } | |
421 | else if (flag_omit_frame_pointer) | |
422 | { | |
423 | /* movmd sequences are fairly cheap when er6 isn't fixed. They can | |
424 | sometimes be as short as two individual memory-to-memory moves, | |
425 | but since they use all the call-saved registers, it seems better | |
426 | to allow up to three moves here. */ | |
427 | h8300_move_ratio = 4; | |
428 | } | |
429 | else if (optimize_size) | |
430 | { | |
431 | /* In this case we don't use movmd sequences since they tend | |
432 | to be longer than calls to memcpy(). Memory-to-memory | |
433 | moves are cheaper than for !TARGET_H8300SX, so it makes | |
434 | sense to have a slightly higher threshold. */ | |
435 | h8300_move_ratio = 4; | |
436 | } | |
437 | else | |
438 | { | |
439 | /* We use movmd sequences for some moves since it can be quicker | |
440 | than calling memcpy(). The sequences will need to save and | |
441 | restore er6 though, so bump up the cost. */ | |
442 | h8300_move_ratio = 6; | |
443 | } | |
0685e770 DD |
444 | |
445 | /* This target defaults to strict volatile bitfields. */ | |
36acc1a2 | 446 | if (flag_strict_volatile_bitfields < 0 && abi_version_at_least(2)) |
0685e770 | 447 | flag_strict_volatile_bitfields = 1; |
beed8fc0 AO |
448 | } |
449 | ||
e9eba255 KH |
450 | /* Return the byte register name for a register rtx X. B should be 0 |
451 | if you want a lower byte register. B should be 1 if you want an | |
452 | upper byte register. */ | |
453 | ||
9c188705 | 454 | static const char * |
cb713a8d | 455 | byte_reg (rtx x, int b) |
07aae5c2 | 456 | { |
9cbcd983 KH |
457 | static const char *const names_small[] = { |
458 | "r0l", "r0h", "r1l", "r1h", "r2l", "r2h", "r3l", "r3h", | |
459 | "r4l", "r4h", "r5l", "r5h", "r6l", "r6h", "r7l", "r7h" | |
460 | }; | |
07aae5c2 | 461 | |
8c440872 | 462 | gcc_assert (REG_P (x)); |
500fc80f | 463 | |
07aae5c2 SC |
464 | return names_small[REGNO (x) * 2 + b]; |
465 | } | |
466 | ||
467 | /* REGNO must be saved/restored across calls if this macro is true. */ | |
48837e29 | 468 | |
9cbcd983 | 469 | #define WORD_REG_USED(regno) \ |
d60004ee | 470 | (regno < SP_REG \ |
9cbcd983 KH |
471 | /* No need to save registers if this function will not return. */ \ |
472 | && ! TREE_THIS_VOLATILE (current_function_decl) \ | |
3cfa3702 | 473 | && (h8300_saveall_function_p (current_function_decl) \ |
9cbcd983 | 474 | /* Save any call saved register that was used. */ \ |
6fb5fa3c | 475 | || (df_regs_ever_live_p (regno) && !call_used_regs[regno]) \ |
9cbcd983 | 476 | /* Save the frame pointer if it was used. */ \ |
6fb5fa3c | 477 | || (regno == HARD_FRAME_POINTER_REGNUM && df_regs_ever_live_p (regno)) \ |
9cbcd983 | 478 | /* Save any register used in an interrupt handler. */ \ |
e392d367 | 479 | || (h8300_current_function_interrupt_function_p () \ |
6fb5fa3c | 480 | && df_regs_ever_live_p (regno)) \ |
9cbcd983 KH |
481 | /* Save call clobbered registers in non-leaf interrupt \ |
482 | handlers. */ \ | |
e392d367 | 483 | || (h8300_current_function_interrupt_function_p () \ |
9cbcd983 | 484 | && call_used_regs[regno] \ |
416ff32e | 485 | && !crtl->is_leaf))) |
07aae5c2 | 486 | |
18674659 DD |
487 | /* We use this to wrap all emitted insns in the prologue. */ |
488 | static rtx | |
c72ea086 | 489 | F (rtx x, bool set_it) |
18674659 | 490 | { |
c72ea086 DD |
491 | if (set_it) |
492 | RTX_FRAME_RELATED_P (x) = 1; | |
18674659 DD |
493 | return x; |
494 | } | |
495 | ||
496 | /* Mark all the subexpressions of the PARALLEL rtx PAR as | |
497 | frame-related. Return PAR. | |
498 | ||
499 | dwarf2out.c:dwarf2out_frame_debug_expr ignores sub-expressions of a | |
500 | PARALLEL rtx other than the first if they do not have the | |
501 | FRAME_RELATED flag set on them. */ | |
502 | static rtx | |
503 | Fpa (rtx par) | |
504 | { | |
505 | int len = XVECLEN (par, 0); | |
506 | int i; | |
507 | ||
508 | for (i = 0; i < len; i++) | |
c72ea086 | 509 | F (XVECEXP (par, 0, i), true); |
18674659 DD |
510 | |
511 | return par; | |
512 | } | |
513 | ||
07aae5c2 | 514 | /* Output assembly language to FILE for the operation OP with operand size |
48837e29 | 515 | SIZE to adjust the stack pointer. */ |
48837e29 | 516 | |
07aae5c2 | 517 | static void |
c72ea086 | 518 | h8300_emit_stack_adjustment (int sign, HOST_WIDE_INT size, bool in_prologue) |
07aae5c2 | 519 | { |
72b1de44 KH |
520 | /* If the frame size is 0, we don't have anything to do. */ |
521 | if (size == 0) | |
f8b58e56 | 522 | return; |
72b1de44 | 523 | |
68ee6df6 KH |
524 | /* H8/300 cannot add/subtract a large constant with a single |
525 | instruction. If a temporary register is available, load the | |
526 | constant to it and then do the addition. */ | |
527 | if (TARGET_H8300 | |
528 | && size > 4 | |
529 | && !h8300_current_function_interrupt_function_p () | |
6de9cd9a | 530 | && !(cfun->static_chain_decl != NULL && sign < 0)) |
f8f26adc | 531 | { |
68ee6df6 | 532 | rtx r3 = gen_rtx_REG (Pmode, 3); |
c72ea086 | 533 | F (emit_insn (gen_movhi (r3, GEN_INT (sign * size))), in_prologue); |
18674659 | 534 | F (emit_insn (gen_addhi3 (stack_pointer_rtx, |
c72ea086 | 535 | stack_pointer_rtx, r3)), in_prologue); |
7b3d4613 KH |
536 | } |
537 | else | |
538 | { | |
68ee6df6 KH |
539 | /* The stack adjustment made here is further optimized by the |
540 | splitter. In case of H8/300, the splitter always splits the | |
18674659 DD |
541 | addition emitted here to make the adjustment interrupt-safe. |
542 | FIXME: We don't always tag those, because we don't know what | |
543 | the splitter will do. */ | |
72b1de44 | 544 | if (Pmode == HImode) |
18674659 DD |
545 | { |
546 | rtx x = emit_insn (gen_addhi3 (stack_pointer_rtx, | |
547 | stack_pointer_rtx, GEN_INT (sign * size))); | |
548 | if (size < 4) | |
c72ea086 | 549 | F (x, in_prologue); |
18674659 | 550 | } |
72b1de44 | 551 | else |
18674659 | 552 | F (emit_insn (gen_addsi3 (stack_pointer_rtx, |
c72ea086 | 553 | stack_pointer_rtx, GEN_INT (sign * size))), in_prologue); |
07aae5c2 SC |
554 | } |
555 | } | |
556 | ||
8682223f KH |
557 | /* Round up frame size SIZE. */ |
558 | ||
e68d4dd1 UB |
559 | static HOST_WIDE_INT |
560 | round_frame_size (HOST_WIDE_INT size) | |
8682223f | 561 | { |
489eda65 KH |
562 | return ((size + STACK_BOUNDARY / BITS_PER_UNIT - 1) |
563 | & -STACK_BOUNDARY / BITS_PER_UNIT); | |
8682223f KH |
564 | } |
565 | ||
566 | /* Compute which registers to push/pop. | |
567 | Return a bit vector of registers. */ | |
568 | ||
569 | static unsigned int | |
cb713a8d | 570 | compute_saved_regs (void) |
8682223f KH |
571 | { |
572 | unsigned int saved_regs = 0; | |
573 | int regno; | |
574 | ||
575 | /* Construct a bit vector of registers to be pushed/popped. */ | |
1807b726 | 576 | for (regno = 0; regno <= HARD_FRAME_POINTER_REGNUM; regno++) |
8682223f KH |
577 | { |
578 | if (WORD_REG_USED (regno)) | |
579 | saved_regs |= 1 << regno; | |
580 | } | |
581 | ||
582 | /* Don't push/pop the frame pointer as it is treated separately. */ | |
583 | if (frame_pointer_needed) | |
1807b726 | 584 | saved_regs &= ~(1 << HARD_FRAME_POINTER_REGNUM); |
8682223f KH |
585 | |
586 | return saved_regs; | |
587 | } | |
588 | ||
68ee6df6 | 589 | /* Emit an insn to push register RN. */ |
8682223f | 590 | |
8f1594b2 | 591 | static rtx |
cb713a8d | 592 | push (int rn) |
8682223f | 593 | { |
68ee6df6 KH |
594 | rtx reg = gen_rtx_REG (word_mode, rn); |
595 | rtx x; | |
596 | ||
513f31eb | 597 | if (TARGET_H8300) |
68ee6df6 | 598 | x = gen_push_h8300 (reg); |
f24f0897 | 599 | else if (!TARGET_NORMAL_MODE) |
32da7865 | 600 | x = gen_push_h8300hs_advanced (reg); |
f24f0897 KH |
601 | else |
602 | x = gen_push_h8300hs_normal (reg); | |
ac447f25 | 603 | x = F (emit_insn (x), true); |
9690aa8e | 604 | add_reg_note (x, REG_INC, stack_pointer_rtx); |
8f1594b2 | 605 | return x; |
8682223f KH |
606 | } |
607 | ||
68ee6df6 | 608 | /* Emit an insn to pop register RN. */ |
8682223f | 609 | |
8f1594b2 | 610 | static rtx |
cb713a8d | 611 | pop (int rn) |
8682223f | 612 | { |
68ee6df6 KH |
613 | rtx reg = gen_rtx_REG (word_mode, rn); |
614 | rtx x; | |
615 | ||
513f31eb | 616 | if (TARGET_H8300) |
68ee6df6 | 617 | x = gen_pop_h8300 (reg); |
f24f0897 | 618 | else if (!TARGET_NORMAL_MODE) |
32da7865 | 619 | x = gen_pop_h8300hs_advanced (reg); |
f24f0897 KH |
620 | else |
621 | x = gen_pop_h8300hs_normal (reg); | |
68ee6df6 | 622 | x = emit_insn (x); |
9690aa8e | 623 | add_reg_note (x, REG_INC, stack_pointer_rtx); |
8f1594b2 | 624 | return x; |
8682223f | 625 | } |
07aae5c2 | 626 | |
beed8fc0 AO |
627 | /* Emit an instruction to push or pop NREGS consecutive registers |
628 | starting at register REGNO. POP_P selects a pop rather than a | |
629 | push and RETURN_P is true if the instruction should return. | |
630 | ||
631 | It must be possible to do the requested operation in a single | |
632 | instruction. If NREGS == 1 && !RETURN_P, use a normal push | |
633 | or pop insn. Otherwise emit a parallel of the form: | |
634 | ||
635 | (parallel | |
636 | [(return) ;; if RETURN_P | |
637 | (save or restore REGNO) | |
638 | (save or restore REGNO + 1) | |
639 | ... | |
640 | (save or restore REGNO + NREGS - 1) | |
641 | (set sp (plus sp (const_int adjust)))] */ | |
642 | ||
643 | static void | |
ac447f25 | 644 | h8300_push_pop (int regno, int nregs, bool pop_p, bool return_p) |
beed8fc0 AO |
645 | { |
646 | int i, j; | |
647 | rtvec vec; | |
18674659 | 648 | rtx sp, offset, x; |
beed8fc0 AO |
649 | |
650 | /* See whether we can use a simple push or pop. */ | |
651 | if (!return_p && nregs == 1) | |
652 | { | |
653 | if (pop_p) | |
654 | pop (regno); | |
655 | else | |
656 | push (regno); | |
657 | return; | |
658 | } | |
659 | ||
660 | /* We need one element for the return insn, if present, one for each | |
661 | register, and one for stack adjustment. */ | |
ac447f25 | 662 | vec = rtvec_alloc ((return_p ? 1 : 0) + nregs + 1); |
beed8fc0 AO |
663 | sp = stack_pointer_rtx; |
664 | i = 0; | |
665 | ||
666 | /* Add the return instruction. */ | |
667 | if (return_p) | |
668 | { | |
3810076b | 669 | RTVEC_ELT (vec, i) = ret_rtx; |
beed8fc0 AO |
670 | i++; |
671 | } | |
672 | ||
673 | /* Add the register moves. */ | |
674 | for (j = 0; j < nregs; j++) | |
675 | { | |
676 | rtx lhs, rhs; | |
677 | ||
678 | if (pop_p) | |
679 | { | |
680 | /* Register REGNO + NREGS - 1 is popped first. Before the | |
681 | stack adjustment, its slot is at address @sp. */ | |
682 | lhs = gen_rtx_REG (SImode, regno + j); | |
0a81f074 RS |
683 | rhs = gen_rtx_MEM (SImode, plus_constant (Pmode, sp, |
684 | (nregs - j - 1) * 4)); | |
beed8fc0 AO |
685 | } |
686 | else | |
687 | { | |
688 | /* Register REGNO is pushed first and will be stored at @(-4,sp). */ | |
0a81f074 | 689 | lhs = gen_rtx_MEM (SImode, plus_constant (Pmode, sp, (j + 1) * -4)); |
beed8fc0 AO |
690 | rhs = gen_rtx_REG (SImode, regno + j); |
691 | } | |
692 | RTVEC_ELT (vec, i + j) = gen_rtx_SET (VOIDmode, lhs, rhs); | |
693 | } | |
694 | ||
695 | /* Add the stack adjustment. */ | |
696 | offset = GEN_INT ((pop_p ? nregs : -nregs) * 4); | |
697 | RTVEC_ELT (vec, i + j) = gen_rtx_SET (VOIDmode, sp, | |
698 | gen_rtx_PLUS (Pmode, sp, offset)); | |
699 | ||
18674659 DD |
700 | x = gen_rtx_PARALLEL (VOIDmode, vec); |
701 | if (!pop_p) | |
702 | x = Fpa (x); | |
ac447f25 NC |
703 | |
704 | if (return_p) | |
705 | emit_jump_insn (x); | |
706 | else | |
707 | emit_insn (x); | |
beed8fc0 AO |
708 | } |
709 | ||
710 | /* Return true if X has the value sp + OFFSET. */ | |
711 | ||
712 | static int | |
713 | h8300_stack_offset_p (rtx x, int offset) | |
714 | { | |
715 | if (offset == 0) | |
716 | return x == stack_pointer_rtx; | |
717 | ||
718 | return (GET_CODE (x) == PLUS | |
719 | && XEXP (x, 0) == stack_pointer_rtx | |
720 | && GET_CODE (XEXP (x, 1)) == CONST_INT | |
721 | && INTVAL (XEXP (x, 1)) == offset); | |
722 | } | |
723 | ||
724 | /* A subroutine of h8300_ldm_stm_parallel. X is one pattern in | |
725 | something that may be an ldm or stm instruction. If it fits | |
726 | the required template, return the register it loads or stores, | |
727 | otherwise return -1. | |
728 | ||
729 | LOAD_P is true if X should be a load, false if it should be a store. | |
730 | NREGS is the number of registers that the whole instruction is expected | |
731 | to load or store. INDEX is the index of the register that X should | |
732 | load or store, relative to the lowest-numbered register. */ | |
733 | ||
734 | static int | |
735 | h8300_ldm_stm_regno (rtx x, int load_p, int index, int nregs) | |
736 | { | |
737 | int regindex, memindex, offset; | |
738 | ||
739 | if (load_p) | |
740 | regindex = 0, memindex = 1, offset = (nregs - index - 1) * 4; | |
741 | else | |
742 | memindex = 0, regindex = 1, offset = (index + 1) * -4; | |
743 | ||
744 | if (GET_CODE (x) == SET | |
745 | && GET_CODE (XEXP (x, regindex)) == REG | |
746 | && GET_CODE (XEXP (x, memindex)) == MEM | |
747 | && h8300_stack_offset_p (XEXP (XEXP (x, memindex), 0), offset)) | |
748 | return REGNO (XEXP (x, regindex)); | |
749 | ||
750 | return -1; | |
751 | } | |
752 | ||
753 | /* Return true if the elements of VEC starting at FIRST describe an | |
754 | ldm or stm instruction (LOAD_P says which). */ | |
755 | ||
981c7dce | 756 | int |
beed8fc0 AO |
757 | h8300_ldm_stm_parallel (rtvec vec, int load_p, int first) |
758 | { | |
759 | rtx last; | |
760 | int nregs, i, regno, adjust; | |
761 | ||
762 | /* There must be a stack adjustment, a register move, and at least one | |
763 | other operation (a return or another register move). */ | |
764 | if (GET_NUM_ELEM (vec) < 3) | |
765 | return false; | |
766 | ||
767 | /* Get the range of registers to be pushed or popped. */ | |
768 | nregs = GET_NUM_ELEM (vec) - first - 1; | |
769 | regno = h8300_ldm_stm_regno (RTVEC_ELT (vec, first), load_p, 0, nregs); | |
770 | ||
771 | /* Check that the call to h8300_ldm_stm_regno succeeded and | |
772 | that we're only dealing with GPRs. */ | |
773 | if (regno < 0 || regno + nregs > 8) | |
774 | return false; | |
775 | ||
776 | /* 2-register h8s instructions must start with an even-numbered register. | |
777 | 3- and 4-register instructions must start with er0 or er4. */ | |
778 | if (!TARGET_H8300SX) | |
779 | { | |
780 | if ((regno & 1) != 0) | |
781 | return false; | |
782 | if (nregs > 2 && (regno & 3) != 0) | |
783 | return false; | |
784 | } | |
785 | ||
786 | /* Check the other loads or stores. */ | |
787 | for (i = 1; i < nregs; i++) | |
788 | if (h8300_ldm_stm_regno (RTVEC_ELT (vec, first + i), load_p, i, nregs) | |
789 | != regno + i) | |
790 | return false; | |
791 | ||
792 | /* Check the stack adjustment. */ | |
793 | last = RTVEC_ELT (vec, first + nregs); | |
794 | adjust = (load_p ? nregs : -nregs) * 4; | |
795 | return (GET_CODE (last) == SET | |
796 | && SET_DEST (last) == stack_pointer_rtx | |
797 | && h8300_stack_offset_p (SET_SRC (last), adjust)); | |
798 | } | |
799 | ||
f0b6f9a6 | 800 | /* This is what the stack looks like after the prolog of |
07aae5c2 SC |
801 | a function with a frame has been set up: |
802 | ||
48837e29 DE |
803 | <args> |
804 | PC | |
805 | FP <- fp | |
806 | <locals> | |
8bd06267 | 807 | <saved registers> <- sp |
07aae5c2 SC |
808 | |
809 | This is what the stack looks like after the prolog of | |
810 | a function which doesn't have a frame: | |
811 | ||
48837e29 DE |
812 | <args> |
813 | PC | |
814 | <locals> | |
8bd06267 | 815 | <saved registers> <- sp |
07aae5c2 SC |
816 | */ |
817 | ||
68ee6df6 | 818 | /* Generate RTL code for the function prologue. */ |
8682223f | 819 | |
68ee6df6 | 820 | void |
cb713a8d | 821 | h8300_expand_prologue (void) |
07aae5c2 | 822 | { |
e651d484 | 823 | int regno; |
8682223f | 824 | int saved_regs; |
cda4bd43 | 825 | int n_regs; |
07aae5c2 | 826 | |
fabe72bb JL |
827 | /* If the current function has the OS_Task attribute set, then |
828 | we have a naked prologue. */ | |
829 | if (h8300_os_task_function_p (current_function_decl)) | |
68ee6df6 | 830 | return; |
fabe72bb JL |
831 | |
832 | if (h8300_monitor_function_p (current_function_decl)) | |
f4ea8112 SKS |
833 | /* The monitor function act as normal functions, which means it |
834 | can accept parameters and return values. In addition to this, | |
835 | interrupts are masked in prologue and return with "rte" in epilogue. */ | |
68ee6df6 | 836 | emit_insn (gen_monitor_prologue ()); |
fabe72bb | 837 | |
48837e29 DE |
838 | if (frame_pointer_needed) |
839 | { | |
07e4d94e | 840 | /* Push fp. */ |
1807b726 | 841 | push (HARD_FRAME_POINTER_REGNUM); |
ac447f25 | 842 | F (emit_move_insn (hard_frame_pointer_rtx, stack_pointer_rtx), true); |
a1616dd9 | 843 | } |
48837e29 | 844 | |
8682223f KH |
845 | /* Push the rest of the registers in ascending order. */ |
846 | saved_regs = compute_saved_regs (); | |
e651d484 | 847 | for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno += n_regs) |
cda4bd43 | 848 | { |
cda4bd43 | 849 | n_regs = 1; |
8682223f | 850 | if (saved_regs & (1 << regno)) |
a1616dd9 JL |
851 | { |
852 | if (TARGET_H8300S) | |
853 | { | |
cda4bd43 | 854 | /* See how many registers we can push at the same time. */ |
beed8fc0 | 855 | if ((!TARGET_H8300SX || (regno & 3) == 0) |
8682223f | 856 | && ((saved_regs >> regno) & 0x0f) == 0x0f) |
cda4bd43 KH |
857 | n_regs = 4; |
858 | ||
beed8fc0 | 859 | else if ((!TARGET_H8300SX || (regno & 3) == 0) |
8682223f | 860 | && ((saved_regs >> regno) & 0x07) == 0x07) |
cda4bd43 KH |
861 | n_regs = 3; |
862 | ||
beed8fc0 | 863 | else if ((!TARGET_H8300SX || (regno & 1) == 0) |
8682223f | 864 | && ((saved_regs >> regno) & 0x03) == 0x03) |
cda4bd43 | 865 | n_regs = 2; |
a1616dd9 | 866 | } |
cda4bd43 | 867 | |
ac447f25 | 868 | h8300_push_pop (regno, n_regs, false, false); |
07aae5c2 SC |
869 | } |
870 | } | |
1807b726 KH |
871 | |
872 | /* Leave room for locals. */ | |
c72ea086 | 873 | h8300_emit_stack_adjustment (-1, round_frame_size (get_frame_size ()), true); |
07aae5c2 SC |
874 | } |
875 | ||
e9eba255 KH |
876 | /* Return nonzero if we can use "rts" for the function currently being |
877 | compiled. */ | |
878 | ||
68ee6df6 | 879 | int |
cb713a8d | 880 | h8300_can_use_return_insn_p (void) |
68ee6df6 KH |
881 | { |
882 | return (reload_completed | |
883 | && !frame_pointer_needed | |
884 | && get_frame_size () == 0 | |
885 | && compute_saved_regs () == 0); | |
886 | } | |
07aae5c2 | 887 | |
68ee6df6 KH |
888 | /* Generate RTL code for the function epilogue. */ |
889 | ||
890 | void | |
cb713a8d | 891 | h8300_expand_epilogue (void) |
07aae5c2 | 892 | { |
e651d484 | 893 | int regno; |
8682223f | 894 | int saved_regs; |
cda4bd43 | 895 | int n_regs; |
beed8fc0 AO |
896 | HOST_WIDE_INT frame_size; |
897 | bool returned_p; | |
07aae5c2 | 898 | |
e392d367 | 899 | if (h8300_os_task_function_p (current_function_decl)) |
68ee6df6 KH |
900 | /* OS_Task epilogues are nearly naked -- they just have an |
901 | rts instruction. */ | |
902 | return; | |
07aae5c2 | 903 | |
beed8fc0 AO |
904 | frame_size = round_frame_size (get_frame_size ()); |
905 | returned_p = false; | |
906 | ||
1807b726 | 907 | /* Deallocate locals. */ |
c72ea086 | 908 | h8300_emit_stack_adjustment (1, frame_size, false); |
1807b726 | 909 | |
8682223f KH |
910 | /* Pop the saved registers in descending order. */ |
911 | saved_regs = compute_saved_regs (); | |
e651d484 | 912 | for (regno = FIRST_PSEUDO_REGISTER - 1; regno >= 0; regno -= n_regs) |
cda4bd43 | 913 | { |
cda4bd43 | 914 | n_regs = 1; |
8682223f | 915 | if (saved_regs & (1 << regno)) |
07aae5c2 | 916 | { |
a1616dd9 JL |
917 | if (TARGET_H8300S) |
918 | { | |
cda4bd43 | 919 | /* See how many registers we can pop at the same time. */ |
beed8fc0 AO |
920 | if ((TARGET_H8300SX || (regno & 3) == 3) |
921 | && ((saved_regs << 3 >> regno) & 0x0f) == 0x0f) | |
cda4bd43 KH |
922 | n_regs = 4; |
923 | ||
beed8fc0 AO |
924 | else if ((TARGET_H8300SX || (regno & 3) == 2) |
925 | && ((saved_regs << 2 >> regno) & 0x07) == 0x07) | |
cda4bd43 KH |
926 | n_regs = 3; |
927 | ||
beed8fc0 AO |
928 | else if ((TARGET_H8300SX || (regno & 1) == 1) |
929 | && ((saved_regs << 1 >> regno) & 0x03) == 0x03) | |
cda4bd43 | 930 | n_regs = 2; |
a1616dd9 | 931 | } |
cda4bd43 | 932 | |
beed8fc0 AO |
933 | /* See if this pop would be the last insn before the return. |
934 | If so, use rte/l or rts/l instead of pop or ldm.l. */ | |
935 | if (TARGET_H8300SX | |
936 | && !frame_pointer_needed | |
937 | && frame_size == 0 | |
938 | && (saved_regs & ((1 << (regno - n_regs + 1)) - 1)) == 0) | |
939 | returned_p = true; | |
940 | ||
ac447f25 | 941 | h8300_push_pop (regno - n_regs + 1, n_regs, true, returned_p); |
07aae5c2 | 942 | } |
07aae5c2 | 943 | } |
48837e29 | 944 | |
07e4d94e | 945 | /* Pop frame pointer if we had one. */ |
a1616dd9 | 946 | if (frame_pointer_needed) |
beed8fc0 AO |
947 | { |
948 | if (TARGET_H8300SX) | |
949 | returned_p = true; | |
ac447f25 | 950 | h8300_push_pop (HARD_FRAME_POINTER_REGNUM, 1, true, returned_p); |
beed8fc0 AO |
951 | } |
952 | ||
953 | if (!returned_p) | |
3810076b | 954 | emit_jump_insn (ret_rtx); |
68ee6df6 | 955 | } |
a1616dd9 | 956 | |
e392d367 KH |
957 | /* Return nonzero if the current function is an interrupt |
958 | function. */ | |
959 | ||
960 | int | |
cb713a8d | 961 | h8300_current_function_interrupt_function_p (void) |
e392d367 | 962 | { |
f4ea8112 SKS |
963 | return (h8300_interrupt_function_p (current_function_decl)); |
964 | } | |
965 | ||
966 | int | |
967 | h8300_current_function_monitor_function_p () | |
968 | { | |
969 | return (h8300_monitor_function_p (current_function_decl)); | |
e392d367 KH |
970 | } |
971 | ||
48837e29 DE |
972 | /* Output assembly code for the start of the file. */ |
973 | ||
1bc7c5b6 ZW |
974 | static void |
975 | h8300_file_start (void) | |
48837e29 | 976 | { |
1bc7c5b6 | 977 | default_file_start (); |
8bd06267 | 978 | |
48837e29 | 979 | if (TARGET_H8300H) |
1bc7c5b6 | 980 | fputs (TARGET_NORMAL_MODE ? "\t.h8300hn\n" : "\t.h8300h\n", asm_out_file); |
beed8fc0 AO |
981 | else if (TARGET_H8300SX) |
982 | fputs (TARGET_NORMAL_MODE ? "\t.h8300sxn\n" : "\t.h8300sx\n", asm_out_file); | |
a1616dd9 | 983 | else if (TARGET_H8300S) |
1bc7c5b6 | 984 | fputs (TARGET_NORMAL_MODE ? "\t.h8300sn\n" : "\t.h8300s\n", asm_out_file); |
48837e29 DE |
985 | } |
986 | ||
987 | /* Output assembly language code for the end of file. */ | |
988 | ||
a5fe455b | 989 | static void |
cb713a8d | 990 | h8300_file_end (void) |
48837e29 | 991 | { |
a5fe455b | 992 | fputs ("\t.end\n", asm_out_file); |
07aae5c2 SC |
993 | } |
994 | \f | |
3cee1a78 KH |
995 | /* Split an add of a small constant into two adds/subs insns. |
996 | ||
997 | If USE_INCDEC_P is nonzero, we generate the last insn using inc/dec | |
998 | instead of adds/subs. */ | |
009ac3d3 RH |
999 | |
1000 | void | |
cb713a8d | 1001 | split_adds_subs (enum machine_mode mode, rtx *operands) |
3b7d443c | 1002 | { |
009ac3d3 RH |
1003 | HOST_WIDE_INT val = INTVAL (operands[1]); |
1004 | rtx reg = operands[0]; | |
9492393e KH |
1005 | HOST_WIDE_INT sign = 1; |
1006 | HOST_WIDE_INT amount; | |
590734b6 | 1007 | rtx (*gen_add) (rtx, rtx, rtx); |
3b7d443c | 1008 | |
9492393e KH |
1009 | /* Force VAL to be positive so that we do not have to consider the |
1010 | sign. */ | |
1011 | if (val < 0) | |
3b7d443c | 1012 | { |
9492393e KH |
1013 | val = -val; |
1014 | sign = -1; | |
1015 | } | |
3b7d443c | 1016 | |
3cee1a78 KH |
1017 | switch (mode) |
1018 | { | |
1019 | case HImode: | |
590734b6 | 1020 | gen_add = gen_addhi3; |
3cee1a78 KH |
1021 | break; |
1022 | ||
1023 | case SImode: | |
590734b6 | 1024 | gen_add = gen_addsi3; |
3cee1a78 KH |
1025 | break; |
1026 | ||
1027 | default: | |
8c440872 | 1028 | gcc_unreachable (); |
3cee1a78 KH |
1029 | } |
1030 | ||
9492393e KH |
1031 | /* Try different amounts in descending order. */ |
1032 | for (amount = (TARGET_H8300H || TARGET_H8300S) ? 4 : 2; | |
1033 | amount > 0; | |
1034 | amount /= 2) | |
1035 | { | |
1a63219b | 1036 | for (; val >= amount; val -= amount) |
590734b6 | 1037 | emit_insn (gen_add (reg, reg, GEN_INT (sign * amount))); |
3b7d443c JL |
1038 | } |
1039 | ||
9492393e | 1040 | return; |
3b7d443c JL |
1041 | } |
1042 | ||
07aae5c2 | 1043 | /* Handle machine specific pragmas for compatibility with existing |
48837e29 | 1044 | compilers for the H8/300. |
07aae5c2 | 1045 | |
f411c849 | 1046 | pragma saveall generates prologue/epilogue code which saves and |
07aae5c2 | 1047 | restores all the registers on function entry. |
48837e29 | 1048 | |
07aae5c2 SC |
1049 | pragma interrupt saves and restores all registers, and exits with |
1050 | an rte instruction rather than an rts. A pointer to a function | |
1051 | with this attribute may be safely used in an interrupt vector. */ | |
48837e29 | 1052 | |
8b97c5f8 | 1053 | void |
cb713a8d | 1054 | h8300_pr_interrupt (struct cpp_reader *pfile ATTRIBUTE_UNUSED) |
07aae5c2 | 1055 | { |
e392d367 | 1056 | pragma_interrupt = 1; |
8b97c5f8 | 1057 | } |
05a81fe5 | 1058 | |
8b97c5f8 | 1059 | void |
cb713a8d | 1060 | h8300_pr_saveall (struct cpp_reader *pfile ATTRIBUTE_UNUSED) |
8b97c5f8 ZW |
1061 | { |
1062 | pragma_saveall = 1; | |
07aae5c2 | 1063 | } |
8b97c5f8 | 1064 | |
64bead4c KH |
1065 | /* If the next function argument with MODE and TYPE is to be passed in |
1066 | a register, return a reg RTX for the hard register in which to pass | |
1067 | the argument. CUM represents the state after the last argument. | |
56f9413b | 1068 | If the argument is to be pushed, NULL_RTX is returned. |
48837e29 | 1069 | |
56f9413b NF |
1070 | On the H8/300 all normal args are pushed, unless -mquickcall in which |
1071 | case the first 3 arguments are passed in registers. */ | |
1072 | ||
1073 | static rtx | |
d5cc9181 | 1074 | h8300_function_arg (cumulative_args_t cum_v, enum machine_mode mode, |
56f9413b | 1075 | const_tree type, bool named) |
07aae5c2 | 1076 | { |
d5cc9181 JR |
1077 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
1078 | ||
0ea6f6a0 KH |
1079 | static const char *const hand_list[] = { |
1080 | "__main", | |
1081 | "__cmpsi2", | |
1082 | "__divhi3", | |
1083 | "__modhi3", | |
1084 | "__udivhi3", | |
1085 | "__umodhi3", | |
1086 | "__divsi3", | |
1087 | "__modsi3", | |
1088 | "__udivsi3", | |
1089 | "__umodsi3", | |
1090 | "__mulhi3", | |
1091 | "__mulsi3", | |
1092 | "__reg_memcpy", | |
1093 | "__reg_memset", | |
1094 | "__ucmpsi2", | |
1095 | 0, | |
1096 | }; | |
1097 | ||
7192cbf1 | 1098 | rtx result = NULL_RTX; |
441d04c6 | 1099 | const char *fname; |
48837e29 DE |
1100 | int regpass = 0; |
1101 | ||
dd07092e JL |
1102 | /* Never pass unnamed arguments in registers. */ |
1103 | if (!named) | |
7192cbf1 | 1104 | return NULL_RTX; |
dd07092e | 1105 | |
48837e29 DE |
1106 | /* Pass 3 regs worth of data in regs when user asked on the command line. */ |
1107 | if (TARGET_QUICKCALL) | |
1108 | regpass = 3; | |
1109 | ||
1110 | /* If calling hand written assembler, use 4 regs of args. */ | |
48837e29 DE |
1111 | if (cum->libcall) |
1112 | { | |
441d04c6 | 1113 | const char * const *p; |
48837e29 DE |
1114 | |
1115 | fname = XSTR (cum->libcall, 0); | |
1116 | ||
1117 | /* See if this libcall is one of the hand coded ones. */ | |
48837e29 DE |
1118 | for (p = hand_list; *p && strcmp (*p, fname) != 0; p++) |
1119 | ; | |
07aae5c2 | 1120 | |
48837e29 DE |
1121 | if (*p) |
1122 | regpass = 4; | |
1123 | } | |
1124 | ||
1125 | if (regpass) | |
1126 | { | |
1127 | int size; | |
1128 | ||
1129 | if (mode == BLKmode) | |
1130 | size = int_size_in_bytes (type); | |
1131 | else | |
1132 | size = GET_MODE_SIZE (mode); | |
1133 | ||
15e0e275 KH |
1134 | if (size + cum->nbytes <= regpass * UNITS_PER_WORD |
1135 | && cum->nbytes / UNITS_PER_WORD <= 3) | |
1136 | result = gen_rtx_REG (mode, cum->nbytes / UNITS_PER_WORD); | |
48837e29 | 1137 | } |
07aae5c2 | 1138 | |
48837e29 DE |
1139 | return result; |
1140 | } | |
56f9413b NF |
1141 | |
1142 | /* Update the data in CUM to advance over an argument | |
1143 | of mode MODE and data type TYPE. | |
1144 | (TYPE is null for libcalls where that information may not be available.) */ | |
1145 | ||
1146 | static void | |
d5cc9181 | 1147 | h8300_function_arg_advance (cumulative_args_t cum_v, enum machine_mode mode, |
56f9413b NF |
1148 | const_tree type, bool named ATTRIBUTE_UNUSED) |
1149 | { | |
d5cc9181 JR |
1150 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
1151 | ||
56f9413b NF |
1152 | cum->nbytes += (mode != BLKmode |
1153 | ? (GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD | |
1154 | : (int_size_in_bytes (type) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD); | |
1155 | } | |
1156 | ||
48837e29 | 1157 | \f |
88cb339e N |
1158 | /* Implements TARGET_REGISTER_MOVE_COST. |
1159 | ||
1160 | Any SI register-to-register move may need to be reloaded, | |
1161 | so inmplement h8300_register_move_cost to return > 2 so that reload never | |
1162 | shortcuts. */ | |
1163 | ||
1164 | static int | |
1165 | h8300_register_move_cost (enum machine_mode mode ATTRIBUTE_UNUSED, | |
1166 | reg_class_t from, reg_class_t to) | |
1167 | { | |
1168 | if (from == MAC_REGS || to == MAC_REG) | |
1169 | return 6; | |
1170 | else | |
1171 | return 3; | |
1172 | } | |
1173 | ||
e9eba255 KH |
1174 | /* Compute the cost of an and insn. */ |
1175 | ||
3c50106f | 1176 | static int |
cb713a8d | 1177 | h8300_and_costs (rtx x) |
73cc75e9 KH |
1178 | { |
1179 | rtx operands[4]; | |
1180 | ||
1181 | if (GET_MODE (x) == QImode) | |
1182 | return 1; | |
1183 | ||
1184 | if (GET_MODE (x) != HImode | |
1185 | && GET_MODE (x) != SImode) | |
1186 | return 100; | |
1187 | ||
1188 | operands[0] = NULL; | |
beed8fc0 | 1189 | operands[1] = XEXP (x, 0); |
73cc75e9 KH |
1190 | operands[2] = XEXP (x, 1); |
1191 | operands[3] = x; | |
4f4ebda3 | 1192 | return compute_logical_op_length (GET_MODE (x), operands) / 2; |
73cc75e9 KH |
1193 | } |
1194 | ||
e9eba255 KH |
1195 | /* Compute the cost of a shift insn. */ |
1196 | ||
3c50106f | 1197 | static int |
cb713a8d | 1198 | h8300_shift_costs (rtx x) |
ae557002 KH |
1199 | { |
1200 | rtx operands[4]; | |
1201 | ||
1202 | if (GET_MODE (x) != QImode | |
1203 | && GET_MODE (x) != HImode | |
1204 | && GET_MODE (x) != SImode) | |
1205 | return 100; | |
1206 | ||
1207 | operands[0] = NULL; | |
1208 | operands[1] = NULL; | |
1209 | operands[2] = XEXP (x, 1); | |
1210 | operands[3] = x; | |
4f4ebda3 | 1211 | return compute_a_shift_length (NULL, operands) / 2; |
ae557002 | 1212 | } |
3c50106f | 1213 | |
e9eba255 KH |
1214 | /* Worker function for TARGET_RTX_COSTS. */ |
1215 | ||
3c50106f | 1216 | static bool |
68f932c4 RS |
1217 | h8300_rtx_costs (rtx x, int code, int outer_code, int opno ATTRIBUTE_UNUSED, |
1218 | int *total, bool speed) | |
3c50106f | 1219 | { |
beed8fc0 AO |
1220 | if (TARGET_H8300SX && outer_code == MEM) |
1221 | { | |
1222 | /* Estimate the number of execution states needed to calculate | |
1223 | the address. */ | |
1224 | if (register_operand (x, VOIDmode) | |
1225 | || GET_CODE (x) == POST_INC | |
1226 | || GET_CODE (x) == POST_DEC | |
1227 | || CONSTANT_P (x)) | |
1228 | *total = 0; | |
1229 | else | |
1230 | *total = COSTS_N_INSNS (1); | |
1231 | return true; | |
1232 | } | |
1233 | ||
3c50106f RH |
1234 | switch (code) |
1235 | { | |
08dca707 KH |
1236 | case CONST_INT: |
1237 | { | |
1238 | HOST_WIDE_INT n = INTVAL (x); | |
1239 | ||
beed8fc0 AO |
1240 | if (TARGET_H8300SX) |
1241 | { | |
1242 | /* Constant operands need the same number of processor | |
1243 | states as register operands. Although we could try to | |
f40751dd | 1244 | use a size-based cost for !speed, the lack of |
beed8fc0 AO |
1245 | of a mode makes the results very unpredictable. */ |
1246 | *total = 0; | |
1247 | return true; | |
1248 | } | |
358a11bb | 1249 | if (-4 <= n && n <= 4) |
08dca707 KH |
1250 | { |
1251 | switch ((int) n) | |
1252 | { | |
1253 | case 0: | |
1254 | *total = 0; | |
1255 | return true; | |
1256 | case 1: | |
1257 | case 2: | |
1258 | case -1: | |
1259 | case -2: | |
1260 | *total = 0 + (outer_code == SET); | |
1261 | return true; | |
1262 | case 4: | |
1263 | case -4: | |
1264 | if (TARGET_H8300H || TARGET_H8300S) | |
1265 | *total = 0 + (outer_code == SET); | |
1266 | else | |
1267 | *total = 1; | |
1268 | return true; | |
1269 | } | |
1270 | } | |
1271 | *total = 1; | |
1272 | return true; | |
1273 | } | |
1274 | ||
1275 | case CONST: | |
1276 | case LABEL_REF: | |
1277 | case SYMBOL_REF: | |
beed8fc0 AO |
1278 | if (TARGET_H8300SX) |
1279 | { | |
1280 | /* See comment for CONST_INT. */ | |
1281 | *total = 0; | |
1282 | return true; | |
1283 | } | |
08dca707 KH |
1284 | *total = 3; |
1285 | return true; | |
1286 | ||
1287 | case CONST_DOUBLE: | |
1288 | *total = 20; | |
1289 | return true; | |
1290 | ||
f90b7a5a PB |
1291 | case COMPARE: |
1292 | if (XEXP (x, 1) == const0_rtx) | |
1293 | *total = 0; | |
1294 | return false; | |
1295 | ||
3c50106f | 1296 | case AND: |
beed8fc0 AO |
1297 | if (!h8300_dst_operand (XEXP (x, 0), VOIDmode) |
1298 | || !h8300_src_operand (XEXP (x, 1), VOIDmode)) | |
1299 | return false; | |
3c50106f RH |
1300 | *total = COSTS_N_INSNS (h8300_and_costs (x)); |
1301 | return true; | |
1302 | ||
1303 | /* We say that MOD and DIV are so expensive because otherwise we'll | |
1304 | generate some really horrible code for division of a power of two. */ | |
1305 | case MOD: | |
1306 | case DIV: | |
beed8fc0 AO |
1307 | case UMOD: |
1308 | case UDIV: | |
1309 | if (TARGET_H8300SX) | |
1310 | switch (GET_MODE (x)) | |
1311 | { | |
1312 | case QImode: | |
1313 | case HImode: | |
f40751dd | 1314 | *total = COSTS_N_INSNS (!speed ? 4 : 10); |
beed8fc0 AO |
1315 | return false; |
1316 | ||
1317 | case SImode: | |
f40751dd | 1318 | *total = COSTS_N_INSNS (!speed ? 4 : 18); |
beed8fc0 AO |
1319 | return false; |
1320 | ||
1321 | default: | |
1322 | break; | |
1323 | } | |
1324 | *total = COSTS_N_INSNS (12); | |
3c50106f RH |
1325 | return true; |
1326 | ||
1327 | case MULT: | |
beed8fc0 AO |
1328 | if (TARGET_H8300SX) |
1329 | switch (GET_MODE (x)) | |
1330 | { | |
1331 | case QImode: | |
1332 | case HImode: | |
1333 | *total = COSTS_N_INSNS (2); | |
1334 | return false; | |
1335 | ||
1336 | case SImode: | |
1337 | *total = COSTS_N_INSNS (5); | |
1338 | return false; | |
1339 | ||
1340 | default: | |
1341 | break; | |
1342 | } | |
1343 | *total = COSTS_N_INSNS (4); | |
3c50106f RH |
1344 | return true; |
1345 | ||
1346 | case ASHIFT: | |
1347 | case ASHIFTRT: | |
1348 | case LSHIFTRT: | |
beed8fc0 AO |
1349 | if (h8sx_binary_shift_operator (x, VOIDmode)) |
1350 | { | |
1351 | *total = COSTS_N_INSNS (2); | |
1352 | return false; | |
1353 | } | |
1354 | else if (h8sx_unary_shift_operator (x, VOIDmode)) | |
1355 | { | |
1356 | *total = COSTS_N_INSNS (1); | |
1357 | return false; | |
1358 | } | |
3c50106f RH |
1359 | *total = COSTS_N_INSNS (h8300_shift_costs (x)); |
1360 | return true; | |
1361 | ||
1362 | case ROTATE: | |
1363 | case ROTATERT: | |
1364 | if (GET_MODE (x) == HImode) | |
1365 | *total = 2; | |
1366 | else | |
1367 | *total = 8; | |
1368 | return true; | |
1369 | ||
1370 | default: | |
beed8fc0 AO |
1371 | *total = COSTS_N_INSNS (1); |
1372 | return false; | |
3c50106f RH |
1373 | } |
1374 | } | |
48837e29 | 1375 | \f |
07aae5c2 SC |
1376 | /* Documentation for the machine specific operand escapes: |
1377 | ||
48837e29 DE |
1378 | 'E' like s but negative. |
1379 | 'F' like t but negative. | |
1380 | 'G' constant just the negative | |
15dc331e JL |
1381 | 'R' print operand as a byte:8 address if appropriate, else fall back to |
1382 | 'X' handling. | |
48837e29 | 1383 | 'S' print operand as a long word |
07aae5c2 | 1384 | 'T' print operand as a word |
48837e29 DE |
1385 | 'V' find the set bit, and print its number. |
1386 | 'W' find the clear bit, and print its number. | |
1387 | 'X' print operand as a byte | |
07aae5c2 | 1388 | 'Y' print either l or h depending on whether last 'Z' operand < 8 or >= 8. |
15dc331e | 1389 | If this operand isn't a register, fall back to 'R' handling. |
48837e29 | 1390 | 'Z' print int & 7. |
b059c02a | 1391 | 'c' print the opcode corresponding to rtl |
da55315a | 1392 | 'e' first word of 32-bit value - if reg, then least reg. if mem |
48837e29 | 1393 | then least. if const then most sig word |
da55315a | 1394 | 'f' second word of 32-bit value - if reg, then biggest reg. if mem |
48837e29 | 1395 | then +2. if const then least sig word |
07aae5c2 SC |
1396 | 'j' print operand as condition code. |
1397 | 'k' print operand as reverse condition code. | |
beed8fc0 AO |
1398 | 'm' convert an integer operand to a size suffix (.b, .w or .l) |
1399 | 'o' print an integer without a leading '#' | |
da55315a KH |
1400 | 's' print as low byte of 16-bit value |
1401 | 't' print as high byte of 16-bit value | |
1402 | 'w' print as low byte of 32-bit value | |
1403 | 'x' print as 2nd byte of 32-bit value | |
1404 | 'y' print as 3rd byte of 32-bit value | |
1405 | 'z' print as msb of 32-bit value | |
48837e29 | 1406 | */ |
07aae5c2 SC |
1407 | |
1408 | /* Return assembly language string which identifies a comparison type. */ | |
1409 | ||
441d04c6 | 1410 | static const char * |
cb713a8d | 1411 | cond_string (enum rtx_code code) |
07aae5c2 SC |
1412 | { |
1413 | switch (code) | |
1414 | { | |
1415 | case NE: | |
1416 | return "ne"; | |
1417 | case EQ: | |
1418 | return "eq"; | |
1419 | case GE: | |
1420 | return "ge"; | |
1421 | case GT: | |
1422 | return "gt"; | |
1423 | case LE: | |
1424 | return "le"; | |
1425 | case LT: | |
1426 | return "lt"; | |
1427 | case GEU: | |
1428 | return "hs"; | |
1429 | case GTU: | |
1430 | return "hi"; | |
1431 | case LEU: | |
1432 | return "ls"; | |
1433 | case LTU: | |
1434 | return "lo"; | |
1435 | default: | |
8c440872 | 1436 | gcc_unreachable (); |
07aae5c2 SC |
1437 | } |
1438 | } | |
1439 | ||
1440 | /* Print operand X using operand code CODE to assembly language output file | |
1441 | FILE. */ | |
1442 | ||
88cb339e N |
1443 | static void |
1444 | h8300_print_operand (FILE *file, rtx x, int code) | |
07aae5c2 | 1445 | { |
269c14e1 | 1446 | /* This is used for communication between codes V,W,Z and Y. */ |
07aae5c2 SC |
1447 | static int bitint; |
1448 | ||
1449 | switch (code) | |
1450 | { | |
f46b8378 SKS |
1451 | case 'C': |
1452 | if (h8300_constant_length (x) == 2) | |
1453 | fprintf (file, ":16"); | |
1454 | else | |
1455 | fprintf (file, ":32"); | |
1456 | return; | |
48837e29 DE |
1457 | case 'E': |
1458 | switch (GET_CODE (x)) | |
1459 | { | |
1460 | case REG: | |
1461 | fprintf (file, "%sl", names_big[REGNO (x)]); | |
1462 | break; | |
1463 | case CONST_INT: | |
b47900aa | 1464 | fprintf (file, "#%ld", (-INTVAL (x)) & 0xff); |
48837e29 DE |
1465 | break; |
1466 | default: | |
8c440872 | 1467 | gcc_unreachable (); |
48837e29 DE |
1468 | } |
1469 | break; | |
1470 | case 'F': | |
1471 | switch (GET_CODE (x)) | |
1472 | { | |
1473 | case REG: | |
1474 | fprintf (file, "%sh", names_big[REGNO (x)]); | |
1475 | break; | |
1476 | case CONST_INT: | |
b47900aa | 1477 | fprintf (file, "#%ld", ((-INTVAL (x)) & 0xff00) >> 8); |
48837e29 DE |
1478 | break; |
1479 | default: | |
8c440872 | 1480 | gcc_unreachable (); |
48837e29 DE |
1481 | } |
1482 | break; | |
07aae5c2 | 1483 | case 'G': |
8c440872 | 1484 | gcc_assert (GET_CODE (x) == CONST_INT); |
b47900aa | 1485 | fprintf (file, "#%ld", 0xff & (-INTVAL (x))); |
07aae5c2 | 1486 | break; |
48837e29 DE |
1487 | case 'S': |
1488 | if (GET_CODE (x) == REG) | |
1489 | fprintf (file, "%s", names_extended[REGNO (x)]); | |
07aae5c2 | 1490 | else |
48837e29 | 1491 | goto def; |
07aae5c2 | 1492 | break; |
48837e29 DE |
1493 | case 'T': |
1494 | if (GET_CODE (x) == REG) | |
1495 | fprintf (file, "%s", names_big[REGNO (x)]); | |
07aae5c2 | 1496 | else |
48837e29 | 1497 | goto def; |
07aae5c2 | 1498 | break; |
48837e29 | 1499 | case 'V': |
0f6b820c KP |
1500 | bitint = (INTVAL (x) & 0xffff); |
1501 | if ((exact_log2 ((bitint >> 8) & 0xff)) == -1) | |
1502 | bitint = exact_log2 (bitint & 0xff); | |
1503 | else | |
1504 | bitint = exact_log2 ((bitint >> 8) & 0xff); | |
8c440872 | 1505 | gcc_assert (bitint >= 0); |
4d4d89e2 | 1506 | fprintf (file, "#%d", bitint); |
07aae5c2 | 1507 | break; |
48837e29 | 1508 | case 'W': |
0f6b820c KP |
1509 | bitint = ((~INTVAL (x)) & 0xffff); |
1510 | if ((exact_log2 ((bitint >> 8) & 0xff)) == -1 ) | |
1511 | bitint = exact_log2 (bitint & 0xff); | |
1512 | else | |
1513 | bitint = (exact_log2 ((bitint >> 8) & 0xff)); | |
8c440872 | 1514 | gcc_assert (bitint >= 0); |
4d4d89e2 | 1515 | fprintf (file, "#%d", bitint); |
07aae5c2 | 1516 | break; |
15dc331e | 1517 | case 'R': |
48837e29 DE |
1518 | case 'X': |
1519 | if (GET_CODE (x) == REG) | |
1520 | fprintf (file, "%s", byte_reg (x, 0)); | |
1521 | else | |
1522 | goto def; | |
1523 | break; | |
1524 | case 'Y': | |
8c440872 | 1525 | gcc_assert (bitint >= 0); |
48837e29 DE |
1526 | if (GET_CODE (x) == REG) |
1527 | fprintf (file, "%s%c", names_big[REGNO (x)], bitint > 7 ? 'h' : 'l'); | |
1528 | else | |
88cb339e | 1529 | h8300_print_operand (file, x, 'R'); |
48837e29 DE |
1530 | bitint = -1; |
1531 | break; | |
1532 | case 'Z': | |
1533 | bitint = INTVAL (x); | |
07aae5c2 SC |
1534 | fprintf (file, "#%d", bitint & 7); |
1535 | break; | |
b059c02a KH |
1536 | case 'c': |
1537 | switch (GET_CODE (x)) | |
1538 | { | |
1539 | case IOR: | |
1540 | fprintf (file, "or"); | |
1541 | break; | |
1542 | case XOR: | |
1543 | fprintf (file, "xor"); | |
1544 | break; | |
5abfd1af KH |
1545 | case AND: |
1546 | fprintf (file, "and"); | |
1547 | break; | |
b059c02a KH |
1548 | default: |
1549 | break; | |
1550 | } | |
1551 | break; | |
07aae5c2 SC |
1552 | case 'e': |
1553 | switch (GET_CODE (x)) | |
1554 | { | |
1555 | case REG: | |
48837e29 DE |
1556 | if (TARGET_H8300) |
1557 | fprintf (file, "%s", names_big[REGNO (x)]); | |
1558 | else | |
1559 | fprintf (file, "%s", names_upper_extended[REGNO (x)]); | |
07aae5c2 SC |
1560 | break; |
1561 | case MEM: | |
88cb339e | 1562 | h8300_print_operand (file, x, 0); |
07aae5c2 SC |
1563 | break; |
1564 | case CONST_INT: | |
b47900aa | 1565 | fprintf (file, "#%ld", ((INTVAL (x) >> 16) & 0xffff)); |
07aae5c2 | 1566 | break; |
808fbfac JL |
1567 | case CONST_DOUBLE: |
1568 | { | |
1569 | long val; | |
1570 | REAL_VALUE_TYPE rv; | |
1571 | REAL_VALUE_FROM_CONST_DOUBLE (rv, x); | |
1572 | REAL_VALUE_TO_TARGET_SINGLE (rv, val); | |
441d04c6 | 1573 | fprintf (file, "#%ld", ((val >> 16) & 0xffff)); |
808fbfac JL |
1574 | break; |
1575 | } | |
07aae5c2 | 1576 | default: |
8c440872 | 1577 | gcc_unreachable (); |
07aae5c2 SC |
1578 | break; |
1579 | } | |
1580 | break; | |
07aae5c2 SC |
1581 | case 'f': |
1582 | switch (GET_CODE (x)) | |
1583 | { | |
1584 | case REG: | |
48837e29 DE |
1585 | if (TARGET_H8300) |
1586 | fprintf (file, "%s", names_big[REGNO (x) + 1]); | |
1587 | else | |
1588 | fprintf (file, "%s", names_big[REGNO (x)]); | |
07aae5c2 | 1589 | break; |
07aae5c2 | 1590 | case MEM: |
b72f00af | 1591 | x = adjust_address (x, HImode, 2); |
88cb339e | 1592 | h8300_print_operand (file, x, 0); |
07aae5c2 | 1593 | break; |
07aae5c2 | 1594 | case CONST_INT: |
b47900aa | 1595 | fprintf (file, "#%ld", INTVAL (x) & 0xffff); |
07aae5c2 | 1596 | break; |
808fbfac JL |
1597 | case CONST_DOUBLE: |
1598 | { | |
1599 | long val; | |
1600 | REAL_VALUE_TYPE rv; | |
1601 | REAL_VALUE_FROM_CONST_DOUBLE (rv, x); | |
1602 | REAL_VALUE_TO_TARGET_SINGLE (rv, val); | |
441d04c6 | 1603 | fprintf (file, "#%ld", (val & 0xffff)); |
808fbfac JL |
1604 | break; |
1605 | } | |
07aae5c2 | 1606 | default: |
8c440872 | 1607 | gcc_unreachable (); |
07aae5c2 SC |
1608 | } |
1609 | break; | |
07aae5c2 | 1610 | case 'j': |
761c70aa | 1611 | fputs (cond_string (GET_CODE (x)), file); |
07aae5c2 | 1612 | break; |
07aae5c2 | 1613 | case 'k': |
761c70aa | 1614 | fputs (cond_string (reverse_condition (GET_CODE (x))), file); |
07aae5c2 | 1615 | break; |
beed8fc0 | 1616 | case 'm': |
8c440872 NS |
1617 | gcc_assert (GET_CODE (x) == CONST_INT); |
1618 | switch (INTVAL (x)) | |
1619 | { | |
1620 | case 1: | |
1621 | fputs (".b", file); | |
1622 | break; | |
1623 | ||
1624 | case 2: | |
1625 | fputs (".w", file); | |
1626 | break; | |
1627 | ||
1628 | case 4: | |
1629 | fputs (".l", file); | |
1630 | break; | |
1631 | ||
1632 | default: | |
1633 | gcc_unreachable (); | |
1634 | } | |
beed8fc0 AO |
1635 | break; |
1636 | case 'o': | |
88cb339e | 1637 | h8300_print_operand_address (file, x); |
beed8fc0 | 1638 | break; |
48837e29 DE |
1639 | case 's': |
1640 | if (GET_CODE (x) == CONST_INT) | |
b47900aa | 1641 | fprintf (file, "#%ld", (INTVAL (x)) & 0xff); |
48837e29 DE |
1642 | else |
1643 | fprintf (file, "%s", byte_reg (x, 0)); | |
1644 | break; | |
1645 | case 't': | |
1646 | if (GET_CODE (x) == CONST_INT) | |
b47900aa | 1647 | fprintf (file, "#%ld", (INTVAL (x) >> 8) & 0xff); |
48837e29 DE |
1648 | else |
1649 | fprintf (file, "%s", byte_reg (x, 1)); | |
1650 | break; | |
48837e29 DE |
1651 | case 'w': |
1652 | if (GET_CODE (x) == CONST_INT) | |
b47900aa | 1653 | fprintf (file, "#%ld", INTVAL (x) & 0xff); |
48837e29 | 1654 | else |
a1616dd9 JL |
1655 | fprintf (file, "%s", |
1656 | byte_reg (x, TARGET_H8300 ? 2 : 0)); | |
48837e29 DE |
1657 | break; |
1658 | case 'x': | |
1659 | if (GET_CODE (x) == CONST_INT) | |
b47900aa | 1660 | fprintf (file, "#%ld", (INTVAL (x) >> 8) & 0xff); |
48837e29 | 1661 | else |
a1616dd9 JL |
1662 | fprintf (file, "%s", |
1663 | byte_reg (x, TARGET_H8300 ? 3 : 1)); | |
48837e29 DE |
1664 | break; |
1665 | case 'y': | |
1666 | if (GET_CODE (x) == CONST_INT) | |
b47900aa | 1667 | fprintf (file, "#%ld", (INTVAL (x) >> 16) & 0xff); |
48837e29 DE |
1668 | else |
1669 | fprintf (file, "%s", byte_reg (x, 0)); | |
1670 | break; | |
1671 | case 'z': | |
1672 | if (GET_CODE (x) == CONST_INT) | |
b47900aa | 1673 | fprintf (file, "#%ld", (INTVAL (x) >> 24) & 0xff); |
48837e29 DE |
1674 | else |
1675 | fprintf (file, "%s", byte_reg (x, 1)); | |
1676 | break; | |
1677 | ||
07aae5c2 | 1678 | default: |
48837e29 | 1679 | def: |
07aae5c2 SC |
1680 | switch (GET_CODE (x)) |
1681 | { | |
1682 | case REG: | |
48837e29 DE |
1683 | switch (GET_MODE (x)) |
1684 | { | |
1685 | case QImode: | |
269c14e1 | 1686 | #if 0 /* Is it asm ("mov.b %0,r2l", ...) */ |
48837e29 DE |
1687 | fprintf (file, "%s", byte_reg (x, 0)); |
1688 | #else /* ... or is it asm ("mov.b %0l,r2l", ...) */ | |
1689 | fprintf (file, "%s", names_big[REGNO (x)]); | |
1690 | #endif | |
1691 | break; | |
1692 | case HImode: | |
1693 | fprintf (file, "%s", names_big[REGNO (x)]); | |
1694 | break; | |
1695 | case SImode: | |
8977e8a7 | 1696 | case SFmode: |
48837e29 DE |
1697 | fprintf (file, "%s", names_extended[REGNO (x)]); |
1698 | break; | |
1699 | default: | |
8c440872 | 1700 | gcc_unreachable (); |
48837e29 | 1701 | } |
07aae5c2 SC |
1702 | break; |
1703 | ||
1704 | case MEM: | |
87e4ee91 KH |
1705 | { |
1706 | rtx addr = XEXP (x, 0); | |
1707 | ||
1708 | fprintf (file, "@"); | |
1709 | output_address (addr); | |
1710 | ||
beed8fc0 AO |
1711 | /* Add a length suffix to constant addresses. Although this |
1712 | is often unnecessary, it helps to avoid ambiguity in the | |
1713 | syntax of mova. If we wrote an insn like: | |
1714 | ||
1715 | mova/w.l @(1,@foo.b),er0 | |
1716 | ||
1717 | then .b would be considered part of the symbol name. | |
1718 | Adding a length after foo will avoid this. */ | |
1719 | if (CONSTANT_P (addr)) | |
1720 | switch (code) | |
1721 | { | |
1722 | case 'R': | |
1723 | /* Used for mov.b and bit operations. */ | |
1724 | if (h8300_eightbit_constant_address_p (addr)) | |
1725 | { | |
1726 | fprintf (file, ":8"); | |
1727 | break; | |
1728 | } | |
1729 | ||
1730 | /* Fall through. We should not get here if we are | |
1731 | processing bit operations on H8/300 or H8/300H | |
1732 | because 'U' constraint does not allow bit | |
1733 | operations on the tiny area on these machines. */ | |
1734 | ||
1735 | case 'X': | |
1736 | case 'T': | |
1737 | case 'S': | |
1738 | if (h8300_constant_length (addr) == 2) | |
1739 | fprintf (file, ":16"); | |
1740 | else | |
1741 | fprintf (file, ":32"); | |
1742 | break; | |
1743 | default: | |
1744 | break; | |
1745 | } | |
87e4ee91 | 1746 | } |
07aae5c2 SC |
1747 | break; |
1748 | ||
1749 | case CONST_INT: | |
1750 | case SYMBOL_REF: | |
1751 | case CONST: | |
1752 | case LABEL_REF: | |
1753 | fprintf (file, "#"); | |
88cb339e | 1754 | h8300_print_operand_address (file, x); |
07aae5c2 | 1755 | break; |
808fbfac JL |
1756 | case CONST_DOUBLE: |
1757 | { | |
1758 | long val; | |
1759 | REAL_VALUE_TYPE rv; | |
1760 | REAL_VALUE_FROM_CONST_DOUBLE (rv, x); | |
1761 | REAL_VALUE_TO_TARGET_SINGLE (rv, val); | |
441d04c6 | 1762 | fprintf (file, "#%ld", val); |
808fbfac JL |
1763 | break; |
1764 | } | |
441d04c6 KG |
1765 | default: |
1766 | break; | |
07aae5c2 SC |
1767 | } |
1768 | } | |
1769 | } | |
1770 | ||
88cb339e N |
1771 | /* Implements TARGET_PRINT_OPERAND_PUNCT_VALID_P. */ |
1772 | ||
1773 | static bool | |
1774 | h8300_print_operand_punct_valid_p (unsigned char code) | |
1775 | { | |
1776 | return (code == '#'); | |
1777 | } | |
1778 | ||
07aae5c2 SC |
1779 | /* Output assembly language output for the address ADDR to FILE. */ |
1780 | ||
88cb339e N |
1781 | static void |
1782 | h8300_print_operand_address (FILE *file, rtx addr) | |
07aae5c2 | 1783 | { |
beed8fc0 AO |
1784 | rtx index; |
1785 | int size; | |
1786 | ||
07aae5c2 SC |
1787 | switch (GET_CODE (addr)) |
1788 | { | |
1789 | case REG: | |
48837e29 | 1790 | fprintf (file, "%s", h8_reg_names[REGNO (addr)]); |
07aae5c2 SC |
1791 | break; |
1792 | ||
1793 | case PRE_DEC: | |
48837e29 | 1794 | fprintf (file, "-%s", h8_reg_names[REGNO (XEXP (addr, 0))]); |
07aae5c2 SC |
1795 | break; |
1796 | ||
1797 | case POST_INC: | |
48837e29 | 1798 | fprintf (file, "%s+", h8_reg_names[REGNO (XEXP (addr, 0))]); |
07aae5c2 SC |
1799 | break; |
1800 | ||
beed8fc0 AO |
1801 | case PRE_INC: |
1802 | fprintf (file, "+%s", h8_reg_names[REGNO (XEXP (addr, 0))]); | |
1803 | break; | |
1804 | ||
1805 | case POST_DEC: | |
1806 | fprintf (file, "%s-", h8_reg_names[REGNO (XEXP (addr, 0))]); | |
1807 | break; | |
1808 | ||
07aae5c2 SC |
1809 | case PLUS: |
1810 | fprintf (file, "("); | |
beed8fc0 AO |
1811 | |
1812 | index = h8300_get_index (XEXP (addr, 0), VOIDmode, &size); | |
1813 | if (GET_CODE (index) == REG) | |
07aae5c2 SC |
1814 | { |
1815 | /* reg,foo */ | |
88cb339e | 1816 | h8300_print_operand_address (file, XEXP (addr, 1)); |
07aae5c2 | 1817 | fprintf (file, ","); |
beed8fc0 AO |
1818 | switch (size) |
1819 | { | |
1820 | case 0: | |
88cb339e | 1821 | h8300_print_operand_address (file, index); |
beed8fc0 AO |
1822 | break; |
1823 | ||
1824 | case 1: | |
88cb339e | 1825 | h8300_print_operand (file, index, 'X'); |
beed8fc0 AO |
1826 | fputs (".b", file); |
1827 | break; | |
1828 | ||
1829 | case 2: | |
88cb339e | 1830 | h8300_print_operand (file, index, 'T'); |
beed8fc0 AO |
1831 | fputs (".w", file); |
1832 | break; | |
1833 | ||
1834 | case 4: | |
88cb339e | 1835 | h8300_print_operand (file, index, 'S'); |
beed8fc0 AO |
1836 | fputs (".l", file); |
1837 | break; | |
1838 | } | |
88cb339e | 1839 | /* h8300_print_operand_address (file, XEXP (addr, 0)); */ |
07aae5c2 SC |
1840 | } |
1841 | else | |
1842 | { | |
1843 | /* foo+k */ | |
88cb339e | 1844 | h8300_print_operand_address (file, XEXP (addr, 0)); |
07aae5c2 | 1845 | fprintf (file, "+"); |
88cb339e | 1846 | h8300_print_operand_address (file, XEXP (addr, 1)); |
07aae5c2 SC |
1847 | } |
1848 | fprintf (file, ")"); | |
1849 | break; | |
1850 | ||
1851 | case CONST_INT: | |
48837e29 | 1852 | { |
da55315a | 1853 | /* Since the H8/300 only has 16-bit pointers, negative values are also |
48837e29 DE |
1854 | those >= 32768. This happens for example with pointer minus a |
1855 | constant. We don't want to turn (char *p - 2) into | |
1856 | (char *p + 65534) because loop unrolling can build upon this | |
1857 | (IE: char *p + 131068). */ | |
1858 | int n = INTVAL (addr); | |
1859 | if (TARGET_H8300) | |
1860 | n = (int) (short) n; | |
7a770d8b | 1861 | fprintf (file, "%d", n); |
48837e29 DE |
1862 | break; |
1863 | } | |
07aae5c2 SC |
1864 | |
1865 | default: | |
1866 | output_addr_const (file, addr); | |
1867 | break; | |
1868 | } | |
1869 | } | |
1870 | \f | |
07aae5c2 SC |
1871 | /* Output all insn addresses and their sizes into the assembly language |
1872 | output file. This is helpful for debugging whether the length attributes | |
1873 | in the md file are correct. This is not meant to be a user selectable | |
1874 | option. */ | |
1875 | ||
1876 | void | |
cb713a8d KH |
1877 | final_prescan_insn (rtx insn, rtx *operand ATTRIBUTE_UNUSED, |
1878 | int num_operands ATTRIBUTE_UNUSED) | |
07aae5c2 SC |
1879 | { |
1880 | /* This holds the last insn address. */ | |
1881 | static int last_insn_address = 0; | |
1882 | ||
7798db98 | 1883 | const int uid = INSN_UID (insn); |
07aae5c2 SC |
1884 | |
1885 | if (TARGET_ADDRESSES) | |
1886 | { | |
9d98a694 AO |
1887 | fprintf (asm_out_file, "; 0x%x %d\n", INSN_ADDRESSES (uid), |
1888 | INSN_ADDRESSES (uid) - last_insn_address); | |
1889 | last_insn_address = INSN_ADDRESSES (uid); | |
07aae5c2 SC |
1890 | } |
1891 | } | |
1892 | ||
48837e29 DE |
1893 | /* Prepare for an SI sized move. */ |
1894 | ||
1895 | int | |
1a793acf | 1896 | h8300_expand_movsi (rtx operands[]) |
07aae5c2 | 1897 | { |
48837e29 DE |
1898 | rtx src = operands[1]; |
1899 | rtx dst = operands[0]; | |
1900 | if (!reload_in_progress && !reload_completed) | |
1901 | { | |
1902 | if (!register_operand (dst, GET_MODE (dst))) | |
1903 | { | |
1904 | rtx tmp = gen_reg_rtx (GET_MODE (dst)); | |
1905 | emit_move_insn (tmp, src); | |
1906 | operands[1] = tmp; | |
1907 | } | |
1908 | } | |
1909 | return 0; | |
1910 | } | |
1911 | ||
7b5cbb57 AS |
1912 | /* Given FROM and TO register numbers, say whether this elimination is allowed. |
1913 | Frame pointer elimination is automatically handled. | |
1914 | ||
1915 | For the h8300, if frame pointer elimination is being done, we would like to | |
1916 | convert ap and rp into sp, not fp. | |
1917 | ||
1918 | All other eliminations are valid. */ | |
1919 | ||
1920 | static bool | |
1921 | h8300_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to) | |
1922 | { | |
1923 | return (to == STACK_POINTER_REGNUM ? ! frame_pointer_needed : true); | |
1924 | } | |
1925 | ||
5efd84c5 NF |
1926 | /* Conditionally modify register usage based on target flags. */ |
1927 | ||
1928 | static void | |
1929 | h8300_conditional_register_usage (void) | |
1930 | { | |
1931 | if (!TARGET_MAC) | |
1932 | fixed_regs[MAC_REG] = call_used_regs[MAC_REG] = 1; | |
1933 | } | |
1934 | ||
48837e29 | 1935 | /* Function for INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET). |
07e4d94e KH |
1936 | Define the offset between two registers, one to be eliminated, and |
1937 | the other its replacement, at the start of a routine. */ | |
07aae5c2 | 1938 | |
48837e29 | 1939 | int |
cb713a8d | 1940 | h8300_initial_elimination_offset (int from, int to) |
48837e29 | 1941 | { |
d18ad191 KH |
1942 | /* The number of bytes that the return address takes on the stack. */ |
1943 | int pc_size = POINTER_SIZE / BITS_PER_UNIT; | |
48837e29 | 1944 | |
1807b726 KH |
1945 | /* The number of bytes that the saved frame pointer takes on the stack. */ |
1946 | int fp_size = frame_pointer_needed * UNITS_PER_WORD; | |
1947 | ||
1948 | /* The number of bytes that the saved registers, excluding the frame | |
1949 | pointer, take on the stack. */ | |
1950 | int saved_regs_size = 0; | |
48837e29 | 1951 | |
1807b726 KH |
1952 | /* The number of bytes that the locals takes on the stack. */ |
1953 | int frame_size = round_frame_size (get_frame_size ()); | |
48837e29 | 1954 | |
1807b726 | 1955 | int regno; |
48837e29 | 1956 | |
1807b726 KH |
1957 | for (regno = 0; regno <= HARD_FRAME_POINTER_REGNUM; regno++) |
1958 | if (WORD_REG_USED (regno)) | |
1959 | saved_regs_size += UNITS_PER_WORD; | |
48837e29 | 1960 | |
1807b726 KH |
1961 | /* Adjust saved_regs_size because the above loop took the frame |
1962 | pointer int account. */ | |
1963 | saved_regs_size -= fp_size; | |
39ba95b5 | 1964 | |
8c440872 | 1965 | switch (to) |
1807b726 | 1966 | { |
8c440872 | 1967 | case HARD_FRAME_POINTER_REGNUM: |
1807b726 KH |
1968 | switch (from) |
1969 | { | |
1970 | case ARG_POINTER_REGNUM: | |
1971 | return pc_size + fp_size; | |
1972 | case RETURN_ADDRESS_POINTER_REGNUM: | |
1973 | return fp_size; | |
1974 | case FRAME_POINTER_REGNUM: | |
1975 | return -saved_regs_size; | |
1976 | default: | |
8c440872 | 1977 | gcc_unreachable (); |
1807b726 | 1978 | } |
8c440872 NS |
1979 | break; |
1980 | case STACK_POINTER_REGNUM: | |
1807b726 KH |
1981 | switch (from) |
1982 | { | |
1983 | case ARG_POINTER_REGNUM: | |
1984 | return pc_size + saved_regs_size + frame_size; | |
1985 | case RETURN_ADDRESS_POINTER_REGNUM: | |
1986 | return saved_regs_size + frame_size; | |
1987 | case FRAME_POINTER_REGNUM: | |
1988 | return frame_size; | |
1989 | default: | |
8c440872 | 1990 | gcc_unreachable (); |
1807b726 | 1991 | } |
8c440872 NS |
1992 | break; |
1993 | default: | |
1994 | gcc_unreachable (); | |
1807b726 | 1995 | } |
8c440872 | 1996 | gcc_unreachable (); |
48837e29 DE |
1997 | } |
1998 | ||
e9eba255 KH |
1999 | /* Worker function for RETURN_ADDR_RTX. */ |
2000 | ||
1aae372e | 2001 | rtx |
cb713a8d | 2002 | h8300_return_addr_rtx (int count, rtx frame) |
1aae372e JL |
2003 | { |
2004 | rtx ret; | |
2005 | ||
2006 | if (count == 0) | |
2007 | ret = gen_rtx_MEM (Pmode, | |
2008 | gen_rtx_REG (Pmode, RETURN_ADDRESS_POINTER_REGNUM)); | |
2009 | else if (flag_omit_frame_pointer) | |
2010 | return (rtx) 0; | |
2011 | else | |
2012 | ret = gen_rtx_MEM (Pmode, | |
2013 | memory_address (Pmode, | |
0a81f074 RS |
2014 | plus_constant (Pmode, frame, |
2015 | UNITS_PER_WORD))); | |
1aae372e JL |
2016 | set_mem_alias_set (ret, get_frame_alias_set ()); |
2017 | return ret; | |
2018 | } | |
2019 | ||
48837e29 DE |
2020 | /* Update the condition code from the insn. */ |
2021 | ||
441d04c6 | 2022 | void |
cb713a8d | 2023 | notice_update_cc (rtx body, rtx insn) |
48837e29 | 2024 | { |
d99c740f KH |
2025 | rtx set; |
2026 | ||
48837e29 DE |
2027 | switch (get_attr_cc (insn)) |
2028 | { | |
2029 | case CC_NONE: | |
269c14e1 | 2030 | /* Insn does not affect CC at all. */ |
48837e29 DE |
2031 | break; |
2032 | ||
2033 | case CC_NONE_0HIT: | |
269c14e1 | 2034 | /* Insn does not change CC, but the 0'th operand has been changed. */ |
48837e29 | 2035 | if (cc_status.value1 != 0 |
1ccbefce | 2036 | && reg_overlap_mentioned_p (recog_data.operand[0], cc_status.value1)) |
48837e29 | 2037 | cc_status.value1 = 0; |
d4d6d0ce KH |
2038 | if (cc_status.value2 != 0 |
2039 | && reg_overlap_mentioned_p (recog_data.operand[0], cc_status.value2)) | |
2040 | cc_status.value2 = 0; | |
48837e29 DE |
2041 | break; |
2042 | ||
065bbfe6 | 2043 | case CC_SET_ZN: |
1ccbefce | 2044 | /* Insn sets the Z,N flags of CC to recog_data.operand[0]. |
269c14e1 DE |
2045 | The V flag is unusable. The C flag may or may not be known but |
2046 | that's ok because alter_cond will change tests to use EQ/NE. */ | |
48837e29 | 2047 | CC_STATUS_INIT; |
269c14e1 | 2048 | cc_status.flags |= CC_OVERFLOW_UNUSABLE | CC_NO_CARRY; |
d99c740f KH |
2049 | set = single_set (insn); |
2050 | cc_status.value1 = SET_SRC (set); | |
2051 | if (SET_DEST (set) != cc0_rtx) | |
2052 | cc_status.value2 = SET_DEST (set); | |
48837e29 DE |
2053 | break; |
2054 | ||
065bbfe6 | 2055 | case CC_SET_ZNV: |
1ccbefce | 2056 | /* Insn sets the Z,N,V flags of CC to recog_data.operand[0]. |
065bbfe6 JL |
2057 | The C flag may or may not be known but that's ok because |
2058 | alter_cond will change tests to use EQ/NE. */ | |
2059 | CC_STATUS_INIT; | |
2060 | cc_status.flags |= CC_NO_CARRY; | |
d99c740f KH |
2061 | set = single_set (insn); |
2062 | cc_status.value1 = SET_SRC (set); | |
2063 | if (SET_DEST (set) != cc0_rtx) | |
c8fcf20c KH |
2064 | { |
2065 | /* If the destination is STRICT_LOW_PART, strip off | |
2066 | STRICT_LOW_PART. */ | |
2067 | if (GET_CODE (SET_DEST (set)) == STRICT_LOW_PART) | |
2068 | cc_status.value2 = XEXP (SET_DEST (set), 0); | |
2069 | else | |
2070 | cc_status.value2 = SET_DEST (set); | |
2071 | } | |
065bbfe6 JL |
2072 | break; |
2073 | ||
beed8fc0 AO |
2074 | case CC_COMPARE: |
2075 | /* The insn is a compare instruction. */ | |
2076 | CC_STATUS_INIT; | |
2077 | cc_status.value1 = SET_SRC (body); | |
2078 | break; | |
2079 | ||
2080 | case CC_CLOBBER: | |
2081 | /* Insn doesn't leave CC in a usable state. */ | |
2082 | CC_STATUS_INIT; | |
2083 | break; | |
2084 | } | |
2085 | } | |
beed8fc0 AO |
2086 | \f |
2087 | /* Given that X occurs in an address of the form (plus X constant), | |
2088 | return the part of X that is expected to be a register. There are | |
2089 | four kinds of addressing mode to recognize: | |
2090 | ||
2091 | @(dd,Rn) | |
2092 | @(dd,RnL.b) | |
2093 | @(dd,Rn.w) | |
2094 | @(dd,ERn.l) | |
2095 | ||
2096 | If SIZE is nonnull, and the address is one of the last three forms, | |
2097 | set *SIZE to the index multiplication factor. Set it to 0 for | |
2098 | plain @(dd,Rn) addresses. | |
2099 | ||
2100 | MODE is the mode of the value being accessed. It can be VOIDmode | |
2101 | if the address is known to be valid, but its mode is unknown. */ | |
2102 | ||
f52d97da | 2103 | static rtx |
beed8fc0 AO |
2104 | h8300_get_index (rtx x, enum machine_mode mode, int *size) |
2105 | { | |
2106 | int dummy, factor; | |
2107 | ||
2108 | if (size == 0) | |
2109 | size = &dummy; | |
2110 | ||
2111 | factor = (mode == VOIDmode ? 0 : GET_MODE_SIZE (mode)); | |
2112 | if (TARGET_H8300SX | |
2113 | && factor <= 4 | |
2114 | && (mode == VOIDmode | |
2115 | || GET_MODE_CLASS (mode) == MODE_INT | |
2116 | || GET_MODE_CLASS (mode) == MODE_FLOAT)) | |
2117 | { | |
2118 | if (factor <= 1 && GET_CODE (x) == ZERO_EXTEND) | |
2119 | { | |
2120 | /* When accessing byte-sized values, the index can be | |
2121 | a zero-extended QImode or HImode register. */ | |
2122 | *size = GET_MODE_SIZE (GET_MODE (XEXP (x, 0))); | |
2123 | return XEXP (x, 0); | |
2124 | } | |
2125 | else | |
2126 | { | |
2127 | /* We're looking for addresses of the form: | |
2128 | ||
2129 | (mult X I) | |
2130 | or (mult (zero_extend X) I) | |
2131 | ||
2132 | where I is the size of the operand being accessed. | |
2133 | The canonical form of the second expression is: | |
2134 | ||
2135 | (and (mult (subreg X) I) J) | |
2136 | ||
2137 | where J == GET_MODE_MASK (GET_MODE (X)) * I. */ | |
2138 | rtx index; | |
2139 | ||
2140 | if (GET_CODE (x) == AND | |
2141 | && GET_CODE (XEXP (x, 1)) == CONST_INT | |
2142 | && (factor == 0 | |
2143 | || INTVAL (XEXP (x, 1)) == 0xff * factor | |
2144 | || INTVAL (XEXP (x, 1)) == 0xffff * factor)) | |
2145 | { | |
2146 | index = XEXP (x, 0); | |
2147 | *size = (INTVAL (XEXP (x, 1)) >= 0xffff ? 2 : 1); | |
2148 | } | |
2149 | else | |
2150 | { | |
2151 | index = x; | |
2152 | *size = 4; | |
2153 | } | |
2154 | ||
2155 | if (GET_CODE (index) == MULT | |
2156 | && GET_CODE (XEXP (index, 1)) == CONST_INT | |
2157 | && (factor == 0 || factor == INTVAL (XEXP (index, 1)))) | |
2158 | return XEXP (index, 0); | |
2159 | } | |
2160 | } | |
2161 | *size = 0; | |
2162 | return x; | |
2163 | } | |
2164 | \f | |
f52d97da AS |
2165 | /* Worker function for TARGET_MODE_DEPENDENT_ADDRESS_P. |
2166 | ||
2167 | On the H8/300, the predecrement and postincrement address depend thus | |
2168 | (the amount of decrement or increment being the length of the operand). */ | |
2169 | ||
2170 | static bool | |
5bfed9a9 GJL |
2171 | h8300_mode_dependent_address_p (const_rtx addr, |
2172 | addr_space_t as ATTRIBUTE_UNUSED) | |
f52d97da AS |
2173 | { |
2174 | if (GET_CODE (addr) == PLUS | |
2175 | && h8300_get_index (XEXP (addr, 0), VOIDmode, 0) != XEXP (addr, 0)) | |
2176 | return true; | |
2177 | ||
2178 | return false; | |
2179 | } | |
2180 | \f | |
beed8fc0 AO |
2181 | static const h8300_length_table addb_length_table = |
2182 | { | |
2183 | /* #xx Rs @aa @Rs @xx */ | |
2184 | { 2, 2, 4, 4, 4 }, /* add.b xx,Rd */ | |
2185 | { 4, 4, 4, 4, 6 }, /* add.b xx,@aa */ | |
2186 | { 4, 4, 4, 4, 6 }, /* add.b xx,@Rd */ | |
2187 | { 6, 4, 4, 4, 6 } /* add.b xx,@xx */ | |
2188 | }; | |
2189 | ||
2190 | static const h8300_length_table addw_length_table = | |
2191 | { | |
2192 | /* #xx Rs @aa @Rs @xx */ | |
2193 | { 2, 2, 4, 4, 4 }, /* add.w xx,Rd */ | |
2194 | { 4, 4, 4, 4, 6 }, /* add.w xx,@aa */ | |
2195 | { 4, 4, 4, 4, 6 }, /* add.w xx,@Rd */ | |
2196 | { 4, 4, 4, 4, 6 } /* add.w xx,@xx */ | |
2197 | }; | |
2198 | ||
2199 | static const h8300_length_table addl_length_table = | |
2200 | { | |
2201 | /* #xx Rs @aa @Rs @xx */ | |
2202 | { 2, 2, 4, 4, 4 }, /* add.l xx,Rd */ | |
2203 | { 4, 4, 6, 6, 6 }, /* add.l xx,@aa */ | |
2204 | { 4, 4, 6, 6, 6 }, /* add.l xx,@Rd */ | |
2205 | { 4, 4, 6, 6, 6 } /* add.l xx,@xx */ | |
2206 | }; | |
2207 | ||
2208 | #define logicb_length_table addb_length_table | |
2209 | #define logicw_length_table addw_length_table | |
2210 | ||
2211 | static const h8300_length_table logicl_length_table = | |
2212 | { | |
2213 | /* #xx Rs @aa @Rs @xx */ | |
2214 | { 2, 4, 4, 4, 4 }, /* and.l xx,Rd */ | |
2215 | { 4, 4, 6, 6, 6 }, /* and.l xx,@aa */ | |
2216 | { 4, 4, 6, 6, 6 }, /* and.l xx,@Rd */ | |
2217 | { 4, 4, 6, 6, 6 } /* and.l xx,@xx */ | |
2218 | }; | |
2219 | ||
2220 | static const h8300_length_table movb_length_table = | |
2221 | { | |
2222 | /* #xx Rs @aa @Rs @xx */ | |
2223 | { 2, 2, 2, 2, 4 }, /* mov.b xx,Rd */ | |
2224 | { 4, 2, 4, 4, 4 }, /* mov.b xx,@aa */ | |
2225 | { 4, 2, 4, 4, 4 }, /* mov.b xx,@Rd */ | |
2226 | { 4, 4, 4, 4, 4 } /* mov.b xx,@xx */ | |
2227 | }; | |
2228 | ||
2229 | #define movw_length_table movb_length_table | |
2230 | ||
2231 | static const h8300_length_table movl_length_table = | |
2232 | { | |
2233 | /* #xx Rs @aa @Rs @xx */ | |
2234 | { 2, 2, 4, 4, 4 }, /* mov.l xx,Rd */ | |
2235 | { 4, 4, 4, 4, 4 }, /* mov.l xx,@aa */ | |
2236 | { 4, 4, 4, 4, 4 }, /* mov.l xx,@Rd */ | |
2237 | { 4, 4, 4, 4, 4 } /* mov.l xx,@xx */ | |
2238 | }; | |
2239 | ||
2240 | /* Return the size of the given address or displacement constant. */ | |
2241 | ||
2242 | static unsigned int | |
2243 | h8300_constant_length (rtx constant) | |
2244 | { | |
2245 | /* Check for (@d:16,Reg). */ | |
2246 | if (GET_CODE (constant) == CONST_INT | |
2247 | && IN_RANGE (INTVAL (constant), -0x8000, 0x7fff)) | |
2248 | return 2; | |
2249 | ||
2250 | /* Check for (@d:16,Reg) in cases where the displacement is | |
2251 | an absolute address. */ | |
2252 | if (Pmode == HImode || h8300_tiny_constant_address_p (constant)) | |
2253 | return 2; | |
2254 | ||
2255 | return 4; | |
2256 | } | |
2257 | ||
2258 | /* Return the size of a displacement field in address ADDR, which should | |
2259 | have the form (plus X constant). SIZE is the number of bytes being | |
2260 | accessed. */ | |
2261 | ||
2262 | static unsigned int | |
2263 | h8300_displacement_length (rtx addr, int size) | |
2264 | { | |
2265 | rtx offset; | |
2266 | ||
2267 | offset = XEXP (addr, 1); | |
2268 | ||
2269 | /* Check for @(d:2,Reg). */ | |
2270 | if (register_operand (XEXP (addr, 0), VOIDmode) | |
2271 | && GET_CODE (offset) == CONST_INT | |
2272 | && (INTVAL (offset) == size | |
2273 | || INTVAL (offset) == size * 2 | |
2274 | || INTVAL (offset) == size * 3)) | |
2275 | return 0; | |
2276 | ||
2277 | return h8300_constant_length (offset); | |
2278 | } | |
2279 | ||
0a2aaacc KG |
2280 | /* Store the class of operand OP in *OPCLASS and return the length of any |
2281 | extra operand fields. SIZE is the number of bytes in OP. OPCLASS | |
beed8fc0 AO |
2282 | can be null if only the length is needed. */ |
2283 | ||
2284 | static unsigned int | |
0a2aaacc | 2285 | h8300_classify_operand (rtx op, int size, enum h8300_operand_class *opclass) |
beed8fc0 AO |
2286 | { |
2287 | enum h8300_operand_class dummy; | |
2288 | ||
0a2aaacc KG |
2289 | if (opclass == 0) |
2290 | opclass = &dummy; | |
beed8fc0 AO |
2291 | |
2292 | if (CONSTANT_P (op)) | |
2293 | { | |
0a2aaacc | 2294 | *opclass = H8OP_IMMEDIATE; |
beed8fc0 AO |
2295 | |
2296 | /* Byte-sized immediates are stored in the opcode fields. */ | |
2297 | if (size == 1) | |
2298 | return 0; | |
2299 | ||
2300 | /* If this is a 32-bit instruction, see whether the constant | |
2301 | will fit into a 16-bit immediate field. */ | |
2302 | if (TARGET_H8300SX | |
2303 | && size == 4 | |
2304 | && GET_CODE (op) == CONST_INT | |
2305 | && IN_RANGE (INTVAL (op), 0, 0xffff)) | |
2306 | return 2; | |
2307 | ||
2308 | return size; | |
2309 | } | |
2310 | else if (GET_CODE (op) == MEM) | |
2311 | { | |
2312 | op = XEXP (op, 0); | |
2313 | if (CONSTANT_P (op)) | |
2314 | { | |
0a2aaacc | 2315 | *opclass = H8OP_MEM_ABSOLUTE; |
beed8fc0 AO |
2316 | return h8300_constant_length (op); |
2317 | } | |
2318 | else if (GET_CODE (op) == PLUS && CONSTANT_P (XEXP (op, 1))) | |
2319 | { | |
0a2aaacc | 2320 | *opclass = H8OP_MEM_COMPLEX; |
beed8fc0 AO |
2321 | return h8300_displacement_length (op, size); |
2322 | } | |
2323 | else if (GET_RTX_CLASS (GET_CODE (op)) == RTX_AUTOINC) | |
2324 | { | |
0a2aaacc | 2325 | *opclass = H8OP_MEM_COMPLEX; |
beed8fc0 AO |
2326 | return 0; |
2327 | } | |
2328 | else if (register_operand (op, VOIDmode)) | |
2329 | { | |
0a2aaacc | 2330 | *opclass = H8OP_MEM_BASE; |
beed8fc0 AO |
2331 | return 0; |
2332 | } | |
2333 | } | |
8c440872 | 2334 | gcc_assert (register_operand (op, VOIDmode)); |
0a2aaacc | 2335 | *opclass = H8OP_REGISTER; |
8c440872 | 2336 | return 0; |
beed8fc0 AO |
2337 | } |
2338 | ||
2339 | /* Return the length of the instruction described by TABLE given that | |
2340 | its operands are OP1 and OP2. OP1 must be an h8300_dst_operand | |
2341 | and OP2 must be an h8300_src_operand. */ | |
2342 | ||
2343 | static unsigned int | |
2344 | h8300_length_from_table (rtx op1, rtx op2, const h8300_length_table *table) | |
2345 | { | |
2346 | enum h8300_operand_class op1_class, op2_class; | |
2347 | unsigned int size, immediate_length; | |
2348 | ||
2349 | size = GET_MODE_SIZE (GET_MODE (op1)); | |
2350 | immediate_length = (h8300_classify_operand (op1, size, &op1_class) | |
2351 | + h8300_classify_operand (op2, size, &op2_class)); | |
2352 | return immediate_length + (*table)[op1_class - 1][op2_class]; | |
2353 | } | |
2354 | ||
2355 | /* Return the length of a unary instruction such as neg or not given that | |
2356 | its operand is OP. */ | |
2357 | ||
2358 | unsigned int | |
2359 | h8300_unary_length (rtx op) | |
2360 | { | |
0a2aaacc | 2361 | enum h8300_operand_class opclass; |
beed8fc0 AO |
2362 | unsigned int size, operand_length; |
2363 | ||
2364 | size = GET_MODE_SIZE (GET_MODE (op)); | |
0a2aaacc KG |
2365 | operand_length = h8300_classify_operand (op, size, &opclass); |
2366 | switch (opclass) | |
beed8fc0 AO |
2367 | { |
2368 | case H8OP_REGISTER: | |
2369 | return 2; | |
2370 | ||
2371 | case H8OP_MEM_BASE: | |
2372 | return (size == 4 ? 6 : 4); | |
2373 | ||
2374 | case H8OP_MEM_ABSOLUTE: | |
2375 | return operand_length + (size == 4 ? 6 : 4); | |
2376 | ||
2377 | case H8OP_MEM_COMPLEX: | |
2378 | return operand_length + 6; | |
2379 | ||
2380 | default: | |
8c440872 | 2381 | gcc_unreachable (); |
beed8fc0 AO |
2382 | } |
2383 | } | |
2384 | ||
2385 | /* Likewise short immediate instructions such as add.w #xx:3,OP. */ | |
2386 | ||
2387 | static unsigned int | |
2388 | h8300_short_immediate_length (rtx op) | |
2389 | { | |
0a2aaacc | 2390 | enum h8300_operand_class opclass; |
beed8fc0 AO |
2391 | unsigned int size, operand_length; |
2392 | ||
2393 | size = GET_MODE_SIZE (GET_MODE (op)); | |
0a2aaacc | 2394 | operand_length = h8300_classify_operand (op, size, &opclass); |
beed8fc0 | 2395 | |
0a2aaacc | 2396 | switch (opclass) |
beed8fc0 AO |
2397 | { |
2398 | case H8OP_REGISTER: | |
2399 | return 2; | |
2400 | ||
2401 | case H8OP_MEM_BASE: | |
2402 | case H8OP_MEM_ABSOLUTE: | |
2403 | case H8OP_MEM_COMPLEX: | |
2404 | return 4 + operand_length; | |
2405 | ||
2406 | default: | |
8c440872 | 2407 | gcc_unreachable (); |
beed8fc0 AO |
2408 | } |
2409 | } | |
2410 | ||
2411 | /* Likewise bitfield load and store instructions. */ | |
48837e29 | 2412 | |
beed8fc0 AO |
2413 | static unsigned int |
2414 | h8300_bitfield_length (rtx op, rtx op2) | |
2415 | { | |
0a2aaacc | 2416 | enum h8300_operand_class opclass; |
beed8fc0 AO |
2417 | unsigned int size, operand_length; |
2418 | ||
2419 | if (GET_CODE (op) == REG) | |
2420 | op = op2; | |
8c440872 | 2421 | gcc_assert (GET_CODE (op) != REG); |
beed8fc0 AO |
2422 | |
2423 | size = GET_MODE_SIZE (GET_MODE (op)); | |
0a2aaacc | 2424 | operand_length = h8300_classify_operand (op, size, &opclass); |
beed8fc0 | 2425 | |
0a2aaacc | 2426 | switch (opclass) |
beed8fc0 AO |
2427 | { |
2428 | case H8OP_MEM_BASE: | |
2429 | case H8OP_MEM_ABSOLUTE: | |
2430 | case H8OP_MEM_COMPLEX: | |
2431 | return 4 + operand_length; | |
2432 | ||
2433 | default: | |
8c440872 | 2434 | gcc_unreachable (); |
07aae5c2 | 2435 | } |
48837e29 DE |
2436 | } |
2437 | ||
beed8fc0 | 2438 | /* Calculate the length of general binary instruction INSN using TABLE. */ |
8ccf5d5f | 2439 | |
beed8fc0 AO |
2440 | static unsigned int |
2441 | h8300_binary_length (rtx insn, const h8300_length_table *table) | |
8ccf5d5f | 2442 | { |
beed8fc0 AO |
2443 | rtx set; |
2444 | ||
2445 | set = single_set (insn); | |
8c440872 | 2446 | gcc_assert (set); |
beed8fc0 AO |
2447 | |
2448 | if (BINARY_P (SET_SRC (set))) | |
2449 | return h8300_length_from_table (XEXP (SET_SRC (set), 0), | |
2450 | XEXP (SET_SRC (set), 1), table); | |
beed8fc0 | 2451 | else |
8c440872 NS |
2452 | { |
2453 | gcc_assert (GET_RTX_CLASS (GET_CODE (SET_SRC (set))) == RTX_TERNARY); | |
2454 | return h8300_length_from_table (XEXP (XEXP (SET_SRC (set), 1), 0), | |
2455 | XEXP (XEXP (SET_SRC (set), 1), 1), | |
2456 | table); | |
2457 | } | |
8ccf5d5f KH |
2458 | } |
2459 | ||
beed8fc0 AO |
2460 | /* Subroutine of h8300_move_length. Return true if OP is 1- or 2-byte |
2461 | memory reference and either (1) it has the form @(d:16,Rn) or | |
2462 | (2) its address has the code given by INC_CODE. */ | |
8ccf5d5f | 2463 | |
beed8fc0 AO |
2464 | static bool |
2465 | h8300_short_move_mem_p (rtx op, enum rtx_code inc_code) | |
8ccf5d5f | 2466 | { |
beed8fc0 AO |
2467 | rtx addr; |
2468 | unsigned int size; | |
2469 | ||
2470 | if (GET_CODE (op) != MEM) | |
2471 | return false; | |
2472 | ||
2473 | addr = XEXP (op, 0); | |
2474 | size = GET_MODE_SIZE (GET_MODE (op)); | |
2475 | if (size != 1 && size != 2) | |
2476 | return false; | |
2477 | ||
2478 | return (GET_CODE (addr) == inc_code | |
2479 | || (GET_CODE (addr) == PLUS | |
2480 | && GET_CODE (XEXP (addr, 0)) == REG | |
2481 | && h8300_displacement_length (addr, size) == 2)); | |
8ccf5d5f KH |
2482 | } |
2483 | ||
beed8fc0 AO |
2484 | /* Calculate the length of move instruction INSN using the given length |
2485 | table. Although the tables are correct for most cases, there is some | |
2486 | irregularity in the length of mov.b and mov.w. The following forms: | |
8ccf5d5f | 2487 | |
beed8fc0 AO |
2488 | mov @ERs+, Rd |
2489 | mov @(d:16,ERs), Rd | |
2490 | mov Rs, @-ERd | |
2491 | mov Rs, @(d:16,ERd) | |
2492 | ||
2493 | are two bytes shorter than most other "mov Rs, @complex" or | |
2494 | "mov @complex,Rd" combinations. */ | |
2495 | ||
2496 | static unsigned int | |
2497 | h8300_move_length (rtx *operands, const h8300_length_table *table) | |
8ccf5d5f | 2498 | { |
beed8fc0 AO |
2499 | unsigned int size; |
2500 | ||
2501 | size = h8300_length_from_table (operands[0], operands[1], table); | |
2502 | if (REG_P (operands[0]) && h8300_short_move_mem_p (operands[1], POST_INC)) | |
2503 | size -= 2; | |
2504 | if (REG_P (operands[1]) && h8300_short_move_mem_p (operands[0], PRE_DEC)) | |
2505 | size -= 2; | |
2506 | return size; | |
8ccf5d5f KH |
2507 | } |
2508 | ||
beed8fc0 AO |
2509 | /* Return the length of a mova instruction with the given operands. |
2510 | DEST is the register destination, SRC is the source address and | |
2511 | OFFSET is the 16-bit or 32-bit displacement. */ | |
2873836b | 2512 | |
beed8fc0 AO |
2513 | static unsigned int |
2514 | h8300_mova_length (rtx dest, rtx src, rtx offset) | |
2873836b | 2515 | { |
beed8fc0 AO |
2516 | unsigned int size; |
2517 | ||
2518 | size = (2 | |
2519 | + h8300_constant_length (offset) | |
2520 | + h8300_classify_operand (src, GET_MODE_SIZE (GET_MODE (src)), 0)); | |
2521 | if (!REG_P (dest) || !REG_P (src) || REGNO (src) != REGNO (dest)) | |
2522 | size += 2; | |
2523 | return size; | |
2873836b KH |
2524 | } |
2525 | ||
beed8fc0 AO |
2526 | /* Compute the length of INSN based on its length_table attribute. |
2527 | OPERANDS is the array of its operands. */ | |
2873836b | 2528 | |
beed8fc0 AO |
2529 | unsigned int |
2530 | h8300_insn_length_from_table (rtx insn, rtx * operands) | |
2873836b | 2531 | { |
beed8fc0 AO |
2532 | switch (get_attr_length_table (insn)) |
2533 | { | |
2534 | case LENGTH_TABLE_NONE: | |
8c440872 | 2535 | gcc_unreachable (); |
beed8fc0 AO |
2536 | |
2537 | case LENGTH_TABLE_ADDB: | |
2538 | return h8300_binary_length (insn, &addb_length_table); | |
2539 | ||
2540 | case LENGTH_TABLE_ADDW: | |
2541 | return h8300_binary_length (insn, &addw_length_table); | |
2542 | ||
2543 | case LENGTH_TABLE_ADDL: | |
2544 | return h8300_binary_length (insn, &addl_length_table); | |
2545 | ||
2546 | case LENGTH_TABLE_LOGICB: | |
2547 | return h8300_binary_length (insn, &logicb_length_table); | |
2548 | ||
2549 | case LENGTH_TABLE_MOVB: | |
2550 | return h8300_move_length (operands, &movb_length_table); | |
2551 | ||
2552 | case LENGTH_TABLE_MOVW: | |
2553 | return h8300_move_length (operands, &movw_length_table); | |
2554 | ||
2555 | case LENGTH_TABLE_MOVL: | |
2556 | return h8300_move_length (operands, &movl_length_table); | |
2557 | ||
2558 | case LENGTH_TABLE_MOVA: | |
2559 | return h8300_mova_length (operands[0], operands[1], operands[2]); | |
2560 | ||
2561 | case LENGTH_TABLE_MOVA_ZERO: | |
2562 | return h8300_mova_length (operands[0], operands[1], const0_rtx); | |
2563 | ||
2564 | case LENGTH_TABLE_UNARY: | |
2565 | return h8300_unary_length (operands[0]); | |
2566 | ||
2567 | case LENGTH_TABLE_MOV_IMM4: | |
2568 | return 2 + h8300_classify_operand (operands[0], 0, 0); | |
2569 | ||
2570 | case LENGTH_TABLE_SHORT_IMMEDIATE: | |
2571 | return h8300_short_immediate_length (operands[0]); | |
2572 | ||
2573 | case LENGTH_TABLE_BITFIELD: | |
2574 | return h8300_bitfield_length (operands[0], operands[1]); | |
2575 | ||
2576 | case LENGTH_TABLE_BITBRANCH: | |
2577 | return h8300_bitfield_length (operands[1], operands[2]) - 2; | |
8c440872 NS |
2578 | |
2579 | default: | |
2580 | gcc_unreachable (); | |
beed8fc0 | 2581 | } |
2873836b KH |
2582 | } |
2583 | ||
beed8fc0 AO |
2584 | /* Return true if LHS and RHS are memory references that can be mapped |
2585 | to the same h8sx assembly operand. LHS appears as the destination of | |
2586 | an instruction and RHS appears as a source. | |
f9d2de4d | 2587 | |
beed8fc0 AO |
2588 | Three cases are allowed: |
2589 | ||
2590 | - RHS is @+Rn or @-Rn, LHS is @Rn | |
2591 | - RHS is @Rn, LHS is @Rn+ or @Rn- | |
2592 | - RHS and LHS have the same address and neither has side effects. */ | |
2593 | ||
2594 | bool | |
2595 | h8sx_mergeable_memrefs_p (rtx lhs, rtx rhs) | |
f9d2de4d | 2596 | { |
beed8fc0 AO |
2597 | if (GET_CODE (rhs) == MEM && GET_CODE (lhs) == MEM) |
2598 | { | |
2599 | rhs = XEXP (rhs, 0); | |
2600 | lhs = XEXP (lhs, 0); | |
2601 | ||
2602 | if (GET_CODE (rhs) == PRE_INC || GET_CODE (rhs) == PRE_DEC) | |
2603 | return rtx_equal_p (XEXP (rhs, 0), lhs); | |
2604 | ||
2605 | if (GET_CODE (lhs) == POST_INC || GET_CODE (lhs) == POST_DEC) | |
2606 | return rtx_equal_p (rhs, XEXP (lhs, 0)); | |
2607 | ||
2608 | if (rtx_equal_p (rhs, lhs)) | |
2609 | return true; | |
2610 | } | |
2611 | return false; | |
f9d2de4d KH |
2612 | } |
2613 | ||
beed8fc0 AO |
2614 | /* Return true if OPERANDS[1] can be mapped to the same assembly |
2615 | operand as OPERANDS[0]. */ | |
f9d2de4d | 2616 | |
beed8fc0 AO |
2617 | bool |
2618 | h8300_operands_match_p (rtx *operands) | |
f9d2de4d | 2619 | { |
beed8fc0 AO |
2620 | if (register_operand (operands[0], VOIDmode) |
2621 | && register_operand (operands[1], VOIDmode)) | |
2622 | return true; | |
f9d2de4d | 2623 | |
beed8fc0 AO |
2624 | if (h8sx_mergeable_memrefs_p (operands[0], operands[1])) |
2625 | return true; | |
2626 | ||
2627 | return false; | |
f9d2de4d | 2628 | } |
beed8fc0 AO |
2629 | \f |
2630 | /* Try using movmd to move LENGTH bytes from memory region SRC to memory | |
2631 | region DEST. The two regions do not overlap and have the common | |
2632 | alignment given by ALIGNMENT. Return true on success. | |
717d8b71 | 2633 | |
beed8fc0 AO |
2634 | Using movmd for variable-length moves seems to involve some |
2635 | complex trade-offs. For instance: | |
b059c02a | 2636 | |
beed8fc0 AO |
2637 | - Preparing for a movmd instruction is similar to preparing |
2638 | for a memcpy. The main difference is that the arguments | |
2639 | are moved into er4, er5 and er6 rather than er0, er1 and er2. | |
2640 | ||
2641 | - Since movmd clobbers the frame pointer, we need to save | |
2642 | and restore it somehow when frame_pointer_needed. This can | |
2643 | sometimes make movmd sequences longer than calls to memcpy(). | |
2644 | ||
2645 | - The counter register is 16 bits, so the instruction is only | |
2646 | suitable for variable-length moves when sizeof (size_t) == 2. | |
2647 | That's only true in normal mode. | |
2648 | ||
2649 | - We will often lack static alignment information. Falling back | |
2650 | on movmd.b would likely be slower than calling memcpy(), at least | |
2651 | for big moves. | |
2652 | ||
2653 | This function therefore only uses movmd when the length is a | |
2654 | known constant, and only then if -fomit-frame-pointer is in | |
2655 | effect or if we're not optimizing for size. | |
2656 | ||
2657 | At the moment the function uses movmd for all in-range constants, | |
2658 | but it might be better to fall back on memcpy() for large moves | |
2659 | if ALIGNMENT == 1. */ | |
2660 | ||
2661 | bool | |
2662 | h8sx_emit_movmd (rtx dest, rtx src, rtx length, | |
2663 | HOST_WIDE_INT alignment) | |
b059c02a | 2664 | { |
beed8fc0 AO |
2665 | if (!flag_omit_frame_pointer && optimize_size) |
2666 | return false; | |
b059c02a | 2667 | |
beed8fc0 AO |
2668 | if (GET_CODE (length) == CONST_INT) |
2669 | { | |
2670 | rtx dest_reg, src_reg, first_dest, first_src; | |
2671 | HOST_WIDE_INT n; | |
2672 | int factor; | |
2673 | ||
2674 | /* Use movmd.l if the alignment allows it, otherwise fall back | |
2675 | on movmd.b. */ | |
2676 | factor = (alignment >= 2 ? 4 : 1); | |
2677 | ||
2678 | /* Make sure the length is within range. We can handle counter | |
2679 | values up to 65536, although HImode truncation will make | |
2680 | the count appear negative in rtl dumps. */ | |
2681 | n = INTVAL (length); | |
2682 | if (n <= 0 || n / factor > 65536) | |
2683 | return false; | |
2684 | ||
2685 | /* Create temporary registers for the source and destination | |
2686 | pointers. Initialize them to the start of each region. */ | |
2687 | dest_reg = copy_addr_to_reg (XEXP (dest, 0)); | |
2688 | src_reg = copy_addr_to_reg (XEXP (src, 0)); | |
2689 | ||
2690 | /* Create references to the movmd source and destination blocks. */ | |
2691 | first_dest = replace_equiv_address (dest, dest_reg); | |
2692 | first_src = replace_equiv_address (src, src_reg); | |
2693 | ||
f5541398 RS |
2694 | set_mem_size (first_dest, n & -factor); |
2695 | set_mem_size (first_src, n & -factor); | |
beed8fc0 AO |
2696 | |
2697 | length = copy_to_mode_reg (HImode, gen_int_mode (n / factor, HImode)); | |
2698 | emit_insn (gen_movmd (first_dest, first_src, length, GEN_INT (factor))); | |
2699 | ||
2700 | if ((n & -factor) != n) | |
2701 | { | |
2702 | /* Move SRC and DEST past the region we just copied. | |
2703 | This is done to update the memory attributes. */ | |
2704 | dest = adjust_address (dest, BLKmode, n & -factor); | |
2705 | src = adjust_address (src, BLKmode, n & -factor); | |
2706 | ||
2707 | /* Replace the addresses with the source and destination | |
2708 | registers, which movmd has left with the right values. */ | |
2709 | dest = replace_equiv_address (dest, dest_reg); | |
2710 | src = replace_equiv_address (src, src_reg); | |
2711 | ||
2712 | /* Mop up the left-over bytes. */ | |
2713 | if (n & 2) | |
2714 | emit_move_insn (adjust_address (dest, HImode, 0), | |
2715 | adjust_address (src, HImode, 0)); | |
2716 | if (n & 1) | |
2717 | emit_move_insn (adjust_address (dest, QImode, n & 2), | |
2718 | adjust_address (src, QImode, n & 2)); | |
2719 | } | |
2720 | return true; | |
2721 | } | |
2722 | return false; | |
b059c02a KH |
2723 | } |
2724 | ||
beed8fc0 | 2725 | /* Move ADDR into er6 after pushing its old value onto the stack. */ |
48837e29 | 2726 | |
beed8fc0 AO |
2727 | void |
2728 | h8300_swap_into_er6 (rtx addr) | |
48837e29 | 2729 | { |
8f1594b2 RH |
2730 | rtx insn = push (HARD_FRAME_POINTER_REGNUM); |
2731 | if (frame_pointer_needed) | |
2732 | add_reg_note (insn, REG_CFA_DEF_CFA, | |
0a81f074 | 2733 | plus_constant (Pmode, gen_rtx_MEM (Pmode, stack_pointer_rtx), |
8f1594b2 RH |
2734 | 2 * UNITS_PER_WORD)); |
2735 | else | |
2736 | add_reg_note (insn, REG_CFA_ADJUST_CFA, | |
2737 | gen_rtx_SET (VOIDmode, stack_pointer_rtx, | |
0a81f074 | 2738 | plus_constant (Pmode, stack_pointer_rtx, 4))); |
8f1594b2 | 2739 | |
beed8fc0 AO |
2740 | emit_move_insn (hard_frame_pointer_rtx, addr); |
2741 | if (REGNO (addr) == SP_REG) | |
2742 | emit_move_insn (hard_frame_pointer_rtx, | |
0a81f074 | 2743 | plus_constant (Pmode, hard_frame_pointer_rtx, |
beed8fc0 AO |
2744 | GET_MODE_SIZE (word_mode))); |
2745 | } | |
07aae5c2 | 2746 | |
beed8fc0 AO |
2747 | /* Move the current value of er6 into ADDR and pop its old value |
2748 | from the stack. */ | |
2749 | ||
2750 | void | |
2751 | h8300_swap_out_of_er6 (rtx addr) | |
2752 | { | |
8f1594b2 RH |
2753 | rtx insn; |
2754 | ||
beed8fc0 AO |
2755 | if (REGNO (addr) != SP_REG) |
2756 | emit_move_insn (addr, hard_frame_pointer_rtx); | |
8f1594b2 RH |
2757 | |
2758 | insn = pop (HARD_FRAME_POINTER_REGNUM); | |
2759 | RTX_FRAME_RELATED_P (insn) = 1; | |
2760 | if (frame_pointer_needed) | |
2761 | add_reg_note (insn, REG_CFA_DEF_CFA, | |
0a81f074 RS |
2762 | plus_constant (Pmode, hard_frame_pointer_rtx, |
2763 | 2 * UNITS_PER_WORD)); | |
8f1594b2 RH |
2764 | else |
2765 | add_reg_note (insn, REG_CFA_ADJUST_CFA, | |
2766 | gen_rtx_SET (VOIDmode, stack_pointer_rtx, | |
0a81f074 | 2767 | plus_constant (Pmode, stack_pointer_rtx, -4))); |
07aae5c2 | 2768 | } |
48837e29 | 2769 | \f |
7948a9ea KH |
2770 | /* Return the length of mov instruction. */ |
2771 | ||
2772 | unsigned int | |
2773 | compute_mov_length (rtx *operands) | |
2774 | { | |
2775 | /* If the mov instruction involves a memory operand, we compute the | |
2776 | length, assuming the largest addressing mode is used, and then | |
2777 | adjust later in the function. Otherwise, we compute and return | |
2778 | the exact length in one step. */ | |
2779 | enum machine_mode mode = GET_MODE (operands[0]); | |
2780 | rtx dest = operands[0]; | |
2781 | rtx src = operands[1]; | |
2782 | rtx addr; | |
2783 | ||
2784 | if (GET_CODE (src) == MEM) | |
2785 | addr = XEXP (src, 0); | |
2786 | else if (GET_CODE (dest) == MEM) | |
2787 | addr = XEXP (dest, 0); | |
2788 | else | |
2789 | addr = NULL_RTX; | |
2790 | ||
2791 | if (TARGET_H8300) | |
2792 | { | |
2793 | unsigned int base_length; | |
2794 | ||
2795 | switch (mode) | |
2796 | { | |
2797 | case QImode: | |
2798 | if (addr == NULL_RTX) | |
2799 | return 2; | |
2800 | ||
2801 | /* The eightbit addressing is available only in QImode, so | |
2802 | go ahead and take care of it. */ | |
2803 | if (h8300_eightbit_constant_address_p (addr)) | |
2804 | return 2; | |
2805 | ||
2806 | base_length = 4; | |
2807 | break; | |
2808 | ||
2809 | case HImode: | |
2810 | if (addr == NULL_RTX) | |
2811 | { | |
2812 | if (REG_P (src)) | |
2813 | return 2; | |
2814 | ||
2815 | if (src == const0_rtx) | |
2816 | return 2; | |
2817 | ||
2818 | return 4; | |
2819 | } | |
2820 | ||
2821 | base_length = 4; | |
2822 | break; | |
2823 | ||
2824 | case SImode: | |
2825 | if (addr == NULL_RTX) | |
2826 | { | |
2827 | if (REG_P (src)) | |
2828 | return 4; | |
2829 | ||
2830 | if (GET_CODE (src) == CONST_INT) | |
2831 | { | |
2832 | if (src == const0_rtx) | |
2833 | return 4; | |
2834 | ||
2835 | if ((INTVAL (src) & 0xffff) == 0) | |
2836 | return 6; | |
2837 | ||
2838 | if ((INTVAL (src) & 0xffff) == 0) | |
2839 | return 6; | |
f5139cc5 KH |
2840 | |
2841 | if ((INTVAL (src) & 0xffff) | |
2842 | == ((INTVAL (src) >> 16) & 0xffff)) | |
2843 | return 6; | |
7948a9ea KH |
2844 | } |
2845 | return 8; | |
2846 | } | |
2847 | ||
2848 | base_length = 8; | |
2849 | break; | |
2850 | ||
2851 | case SFmode: | |
2852 | if (addr == NULL_RTX) | |
2853 | { | |
2854 | if (REG_P (src)) | |
2855 | return 4; | |
2856 | ||
ceaaaeab | 2857 | if (satisfies_constraint_G (src)) |
2c4a71b3 KH |
2858 | return 4; |
2859 | ||
81983b04 | 2860 | return 8; |
7948a9ea KH |
2861 | } |
2862 | ||
2863 | base_length = 8; | |
2864 | break; | |
2865 | ||
2866 | default: | |
8c440872 | 2867 | gcc_unreachable (); |
7948a9ea KH |
2868 | } |
2869 | ||
2870 | /* Adjust the length based on the addressing mode used. | |
2871 | Specifically, we subtract the difference between the actual | |
2872 | length and the longest one, which is @(d:16,Rs). For SImode | |
2873 | and SFmode, we double the adjustment because two mov.w are | |
2874 | used to do the job. */ | |
2875 | ||
2876 | /* @Rs+ and @-Rd are 2 bytes shorter than the longest. */ | |
2877 | if (GET_CODE (addr) == PRE_DEC | |
2878 | || GET_CODE (addr) == POST_INC) | |
2879 | { | |
2880 | if (mode == QImode || mode == HImode) | |
2881 | return base_length - 2; | |
2882 | else | |
2883 | /* In SImode and SFmode, we use two mov.w instructions, so | |
2a43945f | 2884 | double the adjustment. */ |
7948a9ea KH |
2885 | return base_length - 4; |
2886 | } | |
2887 | ||
2888 | /* @Rs and @Rd are 2 bytes shorter than the longest. Note that | |
2889 | in SImode and SFmode, the second mov.w involves an address | |
2890 | with displacement, namely @(2,Rs) or @(2,Rd), so we subtract | |
2891 | only 2 bytes. */ | |
2892 | if (GET_CODE (addr) == REG) | |
2893 | return base_length - 2; | |
2894 | ||
2895 | return base_length; | |
2896 | } | |
2897 | else | |
2898 | { | |
2899 | unsigned int base_length; | |
2900 | ||
2901 | switch (mode) | |
2902 | { | |
2903 | case QImode: | |
2904 | if (addr == NULL_RTX) | |
2905 | return 2; | |
2906 | ||
2907 | /* The eightbit addressing is available only in QImode, so | |
2908 | go ahead and take care of it. */ | |
2909 | if (h8300_eightbit_constant_address_p (addr)) | |
2910 | return 2; | |
2911 | ||
2912 | base_length = 8; | |
2913 | break; | |
2914 | ||
2915 | case HImode: | |
2916 | if (addr == NULL_RTX) | |
2917 | { | |
2918 | if (REG_P (src)) | |
2919 | return 2; | |
2920 | ||
2921 | if (src == const0_rtx) | |
2922 | return 2; | |
2923 | ||
2924 | return 4; | |
2925 | } | |
2926 | ||
2927 | base_length = 8; | |
2928 | break; | |
2929 | ||
2930 | case SImode: | |
2931 | if (addr == NULL_RTX) | |
2932 | { | |
2933 | if (REG_P (src)) | |
2934 | { | |
2935 | if (REGNO (src) == MAC_REG || REGNO (dest) == MAC_REG) | |
2936 | return 4; | |
2937 | else | |
2938 | return 2; | |
2939 | } | |
2940 | ||
2941 | if (GET_CODE (src) == CONST_INT) | |
2942 | { | |
2943 | int val = INTVAL (src); | |
2944 | ||
2945 | if (val == 0) | |
2946 | return 2; | |
2947 | ||
2948 | if (val == (val & 0x00ff) || val == (val & 0xff00)) | |
2949 | return 4; | |
80e58519 | 2950 | |
7948a9ea KH |
2951 | switch (val & 0xffffffff) |
2952 | { | |
2953 | case 0xffffffff: | |
2954 | case 0xfffffffe: | |
2955 | case 0xfffffffc: | |
2956 | case 0x0000ffff: | |
2957 | case 0x0000fffe: | |
2958 | case 0xffff0000: | |
2959 | case 0xfffe0000: | |
2960 | case 0x00010000: | |
2961 | case 0x00020000: | |
2962 | return 4; | |
2963 | } | |
2964 | } | |
2965 | return 6; | |
2966 | } | |
2967 | ||
2968 | base_length = 10; | |
2969 | break; | |
2970 | ||
2971 | case SFmode: | |
2972 | if (addr == NULL_RTX) | |
2973 | { | |
2974 | if (REG_P (src)) | |
2975 | return 2; | |
2976 | ||
ceaaaeab | 2977 | if (satisfies_constraint_G (src)) |
7948a9ea | 2978 | return 2; |
2c4a71b3 | 2979 | |
7948a9ea KH |
2980 | return 6; |
2981 | } | |
2982 | ||
2983 | base_length = 10; | |
2984 | break; | |
2985 | ||
2986 | default: | |
8c440872 | 2987 | gcc_unreachable (); |
7948a9ea KH |
2988 | } |
2989 | ||
2990 | /* Adjust the length based on the addressing mode used. | |
2991 | Specifically, we subtract the difference between the actual | |
2992 | length and the longest one, which is @(d:24,ERs). */ | |
2993 | ||
2994 | /* @ERs+ and @-ERd are 6 bytes shorter than the longest. */ | |
2995 | if (GET_CODE (addr) == PRE_DEC | |
2996 | || GET_CODE (addr) == POST_INC) | |
2997 | return base_length - 6; | |
2998 | ||
2999 | /* @ERs and @ERd are 6 bytes shorter than the longest. */ | |
3000 | if (GET_CODE (addr) == REG) | |
3001 | return base_length - 6; | |
3002 | ||
3003 | /* @(d:16,ERs) and @(d:16,ERd) are 4 bytes shorter than the | |
3004 | longest. */ | |
3005 | if (GET_CODE (addr) == PLUS | |
3006 | && GET_CODE (XEXP (addr, 0)) == REG | |
3007 | && GET_CODE (XEXP (addr, 1)) == CONST_INT | |
3008 | && INTVAL (XEXP (addr, 1)) > -32768 | |
3009 | && INTVAL (XEXP (addr, 1)) < 32767) | |
3010 | return base_length - 4; | |
3011 | ||
3012 | /* @aa:16 is 4 bytes shorter than the longest. */ | |
3013 | if (h8300_tiny_constant_address_p (addr)) | |
3014 | return base_length - 4; | |
3015 | ||
3016 | /* @aa:24 is 2 bytes shorter than the longest. */ | |
3017 | if (CONSTANT_P (addr)) | |
3018 | return base_length - 2; | |
3019 | ||
3020 | return base_length; | |
3021 | } | |
3022 | } | |
3023 | \f | |
e9eba255 KH |
3024 | /* Output an addition insn. */ |
3025 | ||
366a7b27 | 3026 | const char * |
cb713a8d | 3027 | output_plussi (rtx *operands) |
7d6ac401 KH |
3028 | { |
3029 | enum machine_mode mode = GET_MODE (operands[0]); | |
3030 | ||
8c440872 | 3031 | gcc_assert (mode == SImode); |
7d6ac401 KH |
3032 | |
3033 | if (TARGET_H8300) | |
3034 | { | |
cfedf91b KH |
3035 | if (GET_CODE (operands[2]) == REG) |
3036 | return "add.w\t%f2,%f0\n\taddx\t%y2,%y0\n\taddx\t%z2,%z0"; | |
3037 | ||
3038 | if (GET_CODE (operands[2]) == CONST_INT) | |
3039 | { | |
3040 | HOST_WIDE_INT n = INTVAL (operands[2]); | |
3041 | ||
3042 | if ((n & 0xffffff) == 0) | |
3043 | return "add\t%z2,%z0"; | |
3044 | if ((n & 0xffff) == 0) | |
3045 | return "add\t%y2,%y0\n\taddx\t%z2,%z0"; | |
3046 | if ((n & 0xff) == 0) | |
3047 | return "add\t%x2,%x0\n\taddx\t%y2,%y0\n\taddx\t%z2,%z0"; | |
3048 | } | |
3049 | ||
3050 | return "add\t%w2,%w0\n\taddx\t%x2,%x0\n\taddx\t%y2,%y0\n\taddx\t%z2,%z0"; | |
7d6ac401 KH |
3051 | } |
3052 | else | |
3053 | { | |
beed8fc0 AO |
3054 | if (GET_CODE (operands[2]) == CONST_INT |
3055 | && register_operand (operands[1], VOIDmode)) | |
7d6ac401 KH |
3056 | { |
3057 | HOST_WIDE_INT intval = INTVAL (operands[2]); | |
3058 | ||
beed8fc0 AO |
3059 | if (TARGET_H8300SX && (intval >= 1 && intval <= 7)) |
3060 | return "add.l\t%S2,%S0"; | |
3061 | if (TARGET_H8300SX && (intval >= -7 && intval <= -1)) | |
3062 | return "sub.l\t%G2,%S0"; | |
3063 | ||
7d6ac401 KH |
3064 | /* See if we can finish with 2 bytes. */ |
3065 | ||
9ac7ebba | 3066 | switch ((unsigned int) intval & 0xffffffff) |
7d6ac401 KH |
3067 | { |
3068 | case 0x00000001: | |
3069 | case 0x00000002: | |
3070 | case 0x00000004: | |
3071 | return "adds\t%2,%S0"; | |
3072 | ||
3073 | case 0xffffffff: | |
3074 | case 0xfffffffe: | |
3075 | case 0xfffffffc: | |
3076 | return "subs\t%G2,%S0"; | |
3077 | ||
3078 | case 0x00010000: | |
3079 | case 0x00020000: | |
3080 | operands[2] = GEN_INT (intval >> 16); | |
3081 | return "inc.w\t%2,%e0"; | |
3082 | ||
3083 | case 0xffff0000: | |
3084 | case 0xfffe0000: | |
3085 | operands[2] = GEN_INT (intval >> 16); | |
3086 | return "dec.w\t%G2,%e0"; | |
3087 | } | |
3088 | ||
3089 | /* See if we can finish with 4 bytes. */ | |
3090 | if ((intval & 0xffff) == 0) | |
3091 | { | |
3092 | operands[2] = GEN_INT (intval >> 16); | |
3093 | return "add.w\t%2,%e0"; | |
3094 | } | |
3095 | } | |
3096 | ||
beed8fc0 AO |
3097 | if (GET_CODE (operands[2]) == CONST_INT && INTVAL (operands[2]) < 0) |
3098 | { | |
3099 | operands[2] = GEN_INT (-INTVAL (operands[2])); | |
3100 | return "sub.l\t%S2,%S0"; | |
3101 | } | |
7d6ac401 KH |
3102 | return "add.l\t%S2,%S0"; |
3103 | } | |
3104 | } | |
3105 | ||
beed8fc0 AO |
3106 | /* ??? It would be much easier to add the h8sx stuff if a single function |
3107 | classified the addition as either inc/dec, adds/subs, add.w or add.l. */ | |
e9eba255 KH |
3108 | /* Compute the length of an addition insn. */ |
3109 | ||
7d6ac401 | 3110 | unsigned int |
cb713a8d | 3111 | compute_plussi_length (rtx *operands) |
7d6ac401 KH |
3112 | { |
3113 | enum machine_mode mode = GET_MODE (operands[0]); | |
3114 | ||
8c440872 | 3115 | gcc_assert (mode == SImode); |
7d6ac401 KH |
3116 | |
3117 | if (TARGET_H8300) | |
3118 | { | |
cfedf91b KH |
3119 | if (GET_CODE (operands[2]) == REG) |
3120 | return 6; | |
3121 | ||
3122 | if (GET_CODE (operands[2]) == CONST_INT) | |
3123 | { | |
3124 | HOST_WIDE_INT n = INTVAL (operands[2]); | |
3125 | ||
3126 | if ((n & 0xffffff) == 0) | |
3127 | return 2; | |
3128 | if ((n & 0xffff) == 0) | |
3129 | return 4; | |
3130 | if ((n & 0xff) == 0) | |
3131 | return 6; | |
3132 | } | |
3133 | ||
3134 | return 8; | |
7d6ac401 KH |
3135 | } |
3136 | else | |
3137 | { | |
beed8fc0 AO |
3138 | if (GET_CODE (operands[2]) == CONST_INT |
3139 | && register_operand (operands[1], VOIDmode)) | |
7d6ac401 KH |
3140 | { |
3141 | HOST_WIDE_INT intval = INTVAL (operands[2]); | |
3142 | ||
beed8fc0 AO |
3143 | if (TARGET_H8300SX && (intval >= 1 && intval <= 7)) |
3144 | return 2; | |
3145 | if (TARGET_H8300SX && (intval >= -7 && intval <= -1)) | |
3146 | return 2; | |
3147 | ||
7d6ac401 KH |
3148 | /* See if we can finish with 2 bytes. */ |
3149 | ||
9ac7ebba | 3150 | switch ((unsigned int) intval & 0xffffffff) |
7d6ac401 KH |
3151 | { |
3152 | case 0x00000001: | |
3153 | case 0x00000002: | |
3154 | case 0x00000004: | |
3155 | return 2; | |
3156 | ||
3157 | case 0xffffffff: | |
3158 | case 0xfffffffe: | |
3159 | case 0xfffffffc: | |
3160 | return 2; | |
3161 | ||
3162 | case 0x00010000: | |
3163 | case 0x00020000: | |
3164 | return 2; | |
3165 | ||
3166 | case 0xffff0000: | |
3167 | case 0xfffe0000: | |
3168 | return 2; | |
3169 | } | |
3170 | ||
3171 | /* See if we can finish with 4 bytes. */ | |
3172 | if ((intval & 0xffff) == 0) | |
3173 | return 4; | |
3174 | } | |
3175 | ||
beed8fc0 AO |
3176 | if (GET_CODE (operands[2]) == CONST_INT && INTVAL (operands[2]) < 0) |
3177 | return h8300_length_from_table (operands[0], | |
3178 | GEN_INT (-INTVAL (operands[2])), | |
3179 | &addl_length_table); | |
3180 | else | |
3181 | return h8300_length_from_table (operands[0], operands[2], | |
3182 | &addl_length_table); | |
7d6ac401 KH |
3183 | return 6; |
3184 | } | |
3185 | } | |
3186 | ||
e9eba255 KH |
3187 | /* Compute which flag bits are valid after an addition insn. */ |
3188 | ||
9690aa8e | 3189 | enum attr_cc |
cb713a8d | 3190 | compute_plussi_cc (rtx *operands) |
7d6ac401 KH |
3191 | { |
3192 | enum machine_mode mode = GET_MODE (operands[0]); | |
3193 | ||
8c440872 | 3194 | gcc_assert (mode == SImode); |
7d6ac401 KH |
3195 | |
3196 | if (TARGET_H8300) | |
3197 | { | |
cfedf91b | 3198 | return CC_CLOBBER; |
7d6ac401 KH |
3199 | } |
3200 | else | |
3201 | { | |
beed8fc0 AO |
3202 | if (GET_CODE (operands[2]) == CONST_INT |
3203 | && register_operand (operands[1], VOIDmode)) | |
7d6ac401 KH |
3204 | { |
3205 | HOST_WIDE_INT intval = INTVAL (operands[2]); | |
3206 | ||
beed8fc0 AO |
3207 | if (TARGET_H8300SX && (intval >= 1 && intval <= 7)) |
3208 | return CC_SET_ZN; | |
3209 | if (TARGET_H8300SX && (intval >= -7 && intval <= -1)) | |
3210 | return CC_SET_ZN; | |
3211 | ||
7d6ac401 KH |
3212 | /* See if we can finish with 2 bytes. */ |
3213 | ||
9ac7ebba | 3214 | switch ((unsigned int) intval & 0xffffffff) |
7d6ac401 KH |
3215 | { |
3216 | case 0x00000001: | |
3217 | case 0x00000002: | |
3218 | case 0x00000004: | |
3219 | return CC_NONE_0HIT; | |
3220 | ||
3221 | case 0xffffffff: | |
3222 | case 0xfffffffe: | |
3223 | case 0xfffffffc: | |
3224 | return CC_NONE_0HIT; | |
3225 | ||
3226 | case 0x00010000: | |
3227 | case 0x00020000: | |
3228 | return CC_CLOBBER; | |
3229 | ||
3230 | case 0xffff0000: | |
3231 | case 0xfffe0000: | |
3232 | return CC_CLOBBER; | |
3233 | } | |
3234 | ||
3235 | /* See if we can finish with 4 bytes. */ | |
3236 | if ((intval & 0xffff) == 0) | |
3237 | return CC_CLOBBER; | |
3238 | } | |
3239 | ||
3240 | return CC_SET_ZN; | |
3241 | } | |
3242 | } | |
3243 | \f | |
e9eba255 KH |
3244 | /* Output a logical insn. */ |
3245 | ||
7d6ac401 | 3246 | const char * |
cb713a8d | 3247 | output_logical_op (enum machine_mode mode, rtx *operands) |
366a7b27 | 3248 | { |
b42cff6b KH |
3249 | /* Figure out the logical op that we need to perform. */ |
3250 | enum rtx_code code = GET_CODE (operands[3]); | |
366a7b27 | 3251 | /* Pretend that every byte is affected if both operands are registers. */ |
7798db98 | 3252 | const unsigned HOST_WIDE_INT intval = |
366a7b27 | 3253 | (unsigned HOST_WIDE_INT) ((GET_CODE (operands[2]) == CONST_INT) |
beed8fc0 AO |
3254 | /* Always use the full instruction if the |
3255 | first operand is in memory. It is better | |
3256 | to use define_splits to generate the shorter | |
3257 | sequence where valid. */ | |
3258 | && register_operand (operands[1], VOIDmode) | |
366a7b27 KH |
3259 | ? INTVAL (operands[2]) : 0x55555555); |
3260 | /* The determinant of the algorithm. If we perform an AND, 0 | |
3261 | affects a bit. Otherwise, 1 affects a bit. */ | |
7798db98 | 3262 | const unsigned HOST_WIDE_INT det = (code != AND) ? intval : ~intval; |
f9ac2f95 KH |
3263 | /* Break up DET into pieces. */ |
3264 | const unsigned HOST_WIDE_INT b0 = (det >> 0) & 0xff; | |
3265 | const unsigned HOST_WIDE_INT b1 = (det >> 8) & 0xff; | |
c5e7ce43 KH |
3266 | const unsigned HOST_WIDE_INT b2 = (det >> 16) & 0xff; |
3267 | const unsigned HOST_WIDE_INT b3 = (det >> 24) & 0xff; | |
f9ac2f95 KH |
3268 | const unsigned HOST_WIDE_INT w0 = (det >> 0) & 0xffff; |
3269 | const unsigned HOST_WIDE_INT w1 = (det >> 16) & 0xffff; | |
3270 | int lower_half_easy_p = 0; | |
3271 | int upper_half_easy_p = 0; | |
366a7b27 KH |
3272 | /* The name of an insn. */ |
3273 | const char *opname; | |
3274 | char insn_buf[100]; | |
3275 | ||
3276 | switch (code) | |
3277 | { | |
3278 | case AND: | |
3279 | opname = "and"; | |
3280 | break; | |
3281 | case IOR: | |
3282 | opname = "or"; | |
3283 | break; | |
3284 | case XOR: | |
3285 | opname = "xor"; | |
3286 | break; | |
3287 | default: | |
8c440872 | 3288 | gcc_unreachable (); |
366a7b27 KH |
3289 | } |
3290 | ||
3291 | switch (mode) | |
3292 | { | |
3293 | case HImode: | |
3294 | /* First, see if we can finish with one insn. */ | |
3295 | if ((TARGET_H8300H || TARGET_H8300S) | |
c5e7ce43 KH |
3296 | && b0 != 0 |
3297 | && b1 != 0) | |
366a7b27 KH |
3298 | { |
3299 | sprintf (insn_buf, "%s.w\t%%T2,%%T0", opname); | |
3300 | output_asm_insn (insn_buf, operands); | |
3301 | } | |
3302 | else | |
3303 | { | |
3304 | /* Take care of the lower byte. */ | |
c5e7ce43 | 3305 | if (b0 != 0) |
366a7b27 KH |
3306 | { |
3307 | sprintf (insn_buf, "%s\t%%s2,%%s0", opname); | |
3308 | output_asm_insn (insn_buf, operands); | |
3309 | } | |
3310 | /* Take care of the upper byte. */ | |
c5e7ce43 | 3311 | if (b1 != 0) |
366a7b27 KH |
3312 | { |
3313 | sprintf (insn_buf, "%s\t%%t2,%%t0", opname); | |
3314 | output_asm_insn (insn_buf, operands); | |
3315 | } | |
3316 | } | |
3317 | break; | |
3318 | case SImode: | |
f9ac2f95 KH |
3319 | if (TARGET_H8300H || TARGET_H8300S) |
3320 | { | |
3321 | /* Determine if the lower half can be taken care of in no more | |
3322 | than two bytes. */ | |
3323 | lower_half_easy_p = (b0 == 0 | |
3324 | || b1 == 0 | |
3325 | || (code != IOR && w0 == 0xffff)); | |
3326 | ||
3327 | /* Determine if the upper half can be taken care of in no more | |
3328 | than two bytes. */ | |
3329 | upper_half_easy_p = ((code != IOR && w1 == 0xffff) | |
3330 | || (code == AND && w1 == 0xff00)); | |
3331 | } | |
366a7b27 | 3332 | |
f9ac2f95 KH |
3333 | /* Check if doing everything with one insn is no worse than |
3334 | using multiple insns. */ | |
366a7b27 | 3335 | if ((TARGET_H8300H || TARGET_H8300S) |
f9ac2f95 | 3336 | && w0 != 0 && w1 != 0 |
472f2723 KH |
3337 | && !(lower_half_easy_p && upper_half_easy_p) |
3338 | && !(code == IOR && w1 == 0xffff | |
3339 | && (w0 & 0x8000) != 0 && lower_half_easy_p)) | |
366a7b27 KH |
3340 | { |
3341 | sprintf (insn_buf, "%s.l\t%%S2,%%S0", opname); | |
3342 | output_asm_insn (insn_buf, operands); | |
3343 | } | |
3344 | else | |
3345 | { | |
3346 | /* Take care of the lower and upper words individually. For | |
3347 | each word, we try different methods in the order of | |
3348 | ||
3349 | 1) the special insn (in case of AND or XOR), | |
3350 | 2) the word-wise insn, and | |
3351 | 3) The byte-wise insn. */ | |
c5e7ce43 | 3352 | if (w0 == 0xffff |
6dfa4005 | 3353 | && (TARGET_H8300 ? (code == AND) : (code != IOR))) |
366a7b27 | 3354 | output_asm_insn ((code == AND) |
187462ac | 3355 | ? "sub.w\t%f0,%f0" : "not.w\t%f0", |
366a7b27 KH |
3356 | operands); |
3357 | else if ((TARGET_H8300H || TARGET_H8300S) | |
c5e7ce43 KH |
3358 | && (b0 != 0) |
3359 | && (b1 != 0)) | |
366a7b27 KH |
3360 | { |
3361 | sprintf (insn_buf, "%s.w\t%%f2,%%f0", opname); | |
3362 | output_asm_insn (insn_buf, operands); | |
3363 | } | |
3364 | else | |
3365 | { | |
c5e7ce43 | 3366 | if (b0 != 0) |
366a7b27 KH |
3367 | { |
3368 | sprintf (insn_buf, "%s\t%%w2,%%w0", opname); | |
3369 | output_asm_insn (insn_buf, operands); | |
3370 | } | |
c5e7ce43 | 3371 | if (b1 != 0) |
366a7b27 KH |
3372 | { |
3373 | sprintf (insn_buf, "%s\t%%x2,%%x0", opname); | |
3374 | output_asm_insn (insn_buf, operands); | |
3375 | } | |
3376 | } | |
3377 | ||
c5e7ce43 | 3378 | if ((w1 == 0xffff) |
6dfa4005 | 3379 | && (TARGET_H8300 ? (code == AND) : (code != IOR))) |
366a7b27 | 3380 | output_asm_insn ((code == AND) |
187462ac | 3381 | ? "sub.w\t%e0,%e0" : "not.w\t%e0", |
366a7b27 | 3382 | operands); |
472f2723 KH |
3383 | else if ((TARGET_H8300H || TARGET_H8300S) |
3384 | && code == IOR | |
3385 | && w1 == 0xffff | |
3386 | && (w0 & 0x8000) != 0) | |
3387 | { | |
3388 | output_asm_insn ("exts.l\t%S0", operands); | |
3389 | } | |
a6e8d113 KH |
3390 | else if ((TARGET_H8300H || TARGET_H8300S) |
3391 | && code == AND | |
c5e7ce43 | 3392 | && w1 == 0xff00) |
a6e8d113 | 3393 | { |
dc5f17ec | 3394 | output_asm_insn ("extu.w\t%e0", operands); |
a6e8d113 | 3395 | } |
366a7b27 KH |
3396 | else if (TARGET_H8300H || TARGET_H8300S) |
3397 | { | |
c5e7ce43 | 3398 | if (w1 != 0) |
366a7b27 KH |
3399 | { |
3400 | sprintf (insn_buf, "%s.w\t%%e2,%%e0", opname); | |
3401 | output_asm_insn (insn_buf, operands); | |
3402 | } | |
3403 | } | |
3404 | else | |
3405 | { | |
c5e7ce43 | 3406 | if (b2 != 0) |
366a7b27 KH |
3407 | { |
3408 | sprintf (insn_buf, "%s\t%%y2,%%y0", opname); | |
3409 | output_asm_insn (insn_buf, operands); | |
3410 | } | |
c5e7ce43 | 3411 | if (b3 != 0) |
366a7b27 KH |
3412 | { |
3413 | sprintf (insn_buf, "%s\t%%z2,%%z0", opname); | |
3414 | output_asm_insn (insn_buf, operands); | |
3415 | } | |
3416 | } | |
3417 | } | |
3418 | break; | |
3419 | default: | |
8c440872 | 3420 | gcc_unreachable (); |
366a7b27 KH |
3421 | } |
3422 | return ""; | |
3423 | } | |
40367e2d | 3424 | |
e9eba255 KH |
3425 | /* Compute the length of a logical insn. */ |
3426 | ||
40367e2d | 3427 | unsigned int |
cb713a8d | 3428 | compute_logical_op_length (enum machine_mode mode, rtx *operands) |
40367e2d | 3429 | { |
b42cff6b KH |
3430 | /* Figure out the logical op that we need to perform. */ |
3431 | enum rtx_code code = GET_CODE (operands[3]); | |
40367e2d | 3432 | /* Pretend that every byte is affected if both operands are registers. */ |
7798db98 | 3433 | const unsigned HOST_WIDE_INT intval = |
40367e2d | 3434 | (unsigned HOST_WIDE_INT) ((GET_CODE (operands[2]) == CONST_INT) |
beed8fc0 AO |
3435 | /* Always use the full instruction if the |
3436 | first operand is in memory. It is better | |
3437 | to use define_splits to generate the shorter | |
3438 | sequence where valid. */ | |
3439 | && register_operand (operands[1], VOIDmode) | |
40367e2d KH |
3440 | ? INTVAL (operands[2]) : 0x55555555); |
3441 | /* The determinant of the algorithm. If we perform an AND, 0 | |
3442 | affects a bit. Otherwise, 1 affects a bit. */ | |
7798db98 | 3443 | const unsigned HOST_WIDE_INT det = (code != AND) ? intval : ~intval; |
f9ac2f95 KH |
3444 | /* Break up DET into pieces. */ |
3445 | const unsigned HOST_WIDE_INT b0 = (det >> 0) & 0xff; | |
3446 | const unsigned HOST_WIDE_INT b1 = (det >> 8) & 0xff; | |
c5e7ce43 KH |
3447 | const unsigned HOST_WIDE_INT b2 = (det >> 16) & 0xff; |
3448 | const unsigned HOST_WIDE_INT b3 = (det >> 24) & 0xff; | |
f9ac2f95 KH |
3449 | const unsigned HOST_WIDE_INT w0 = (det >> 0) & 0xffff; |
3450 | const unsigned HOST_WIDE_INT w1 = (det >> 16) & 0xffff; | |
3451 | int lower_half_easy_p = 0; | |
3452 | int upper_half_easy_p = 0; | |
40367e2d KH |
3453 | /* Insn length. */ |
3454 | unsigned int length = 0; | |
3455 | ||
3456 | switch (mode) | |
3457 | { | |
3458 | case HImode: | |
3459 | /* First, see if we can finish with one insn. */ | |
3460 | if ((TARGET_H8300H || TARGET_H8300S) | |
c5e7ce43 KH |
3461 | && b0 != 0 |
3462 | && b1 != 0) | |
40367e2d | 3463 | { |
beed8fc0 AO |
3464 | length = h8300_length_from_table (operands[1], operands[2], |
3465 | &logicw_length_table); | |
40367e2d KH |
3466 | } |
3467 | else | |
3468 | { | |
3469 | /* Take care of the lower byte. */ | |
c5e7ce43 | 3470 | if (b0 != 0) |
40367e2d KH |
3471 | length += 2; |
3472 | ||
3473 | /* Take care of the upper byte. */ | |
c5e7ce43 | 3474 | if (b1 != 0) |
40367e2d KH |
3475 | length += 2; |
3476 | } | |
3477 | break; | |
3478 | case SImode: | |
f9ac2f95 KH |
3479 | if (TARGET_H8300H || TARGET_H8300S) |
3480 | { | |
3481 | /* Determine if the lower half can be taken care of in no more | |
3482 | than two bytes. */ | |
3483 | lower_half_easy_p = (b0 == 0 | |
3484 | || b1 == 0 | |
3485 | || (code != IOR && w0 == 0xffff)); | |
3486 | ||
3487 | /* Determine if the upper half can be taken care of in no more | |
3488 | than two bytes. */ | |
3489 | upper_half_easy_p = ((code != IOR && w1 == 0xffff) | |
3490 | || (code == AND && w1 == 0xff00)); | |
3491 | } | |
40367e2d | 3492 | |
f9ac2f95 KH |
3493 | /* Check if doing everything with one insn is no worse than |
3494 | using multiple insns. */ | |
40367e2d | 3495 | if ((TARGET_H8300H || TARGET_H8300S) |
f9ac2f95 | 3496 | && w0 != 0 && w1 != 0 |
472f2723 KH |
3497 | && !(lower_half_easy_p && upper_half_easy_p) |
3498 | && !(code == IOR && w1 == 0xffff | |
3499 | && (w0 & 0x8000) != 0 && lower_half_easy_p)) | |
40367e2d | 3500 | { |
beed8fc0 AO |
3501 | length = h8300_length_from_table (operands[1], operands[2], |
3502 | &logicl_length_table); | |
40367e2d KH |
3503 | } |
3504 | else | |
3505 | { | |
3506 | /* Take care of the lower and upper words individually. For | |
3507 | each word, we try different methods in the order of | |
3508 | ||
3509 | 1) the special insn (in case of AND or XOR), | |
3510 | 2) the word-wise insn, and | |
3511 | 3) The byte-wise insn. */ | |
c5e7ce43 | 3512 | if (w0 == 0xffff |
40367e2d KH |
3513 | && (TARGET_H8300 ? (code == AND) : (code != IOR))) |
3514 | { | |
3515 | length += 2; | |
3516 | } | |
3517 | else if ((TARGET_H8300H || TARGET_H8300S) | |
c5e7ce43 KH |
3518 | && (b0 != 0) |
3519 | && (b1 != 0)) | |
40367e2d KH |
3520 | { |
3521 | length += 4; | |
3522 | } | |
3523 | else | |
3524 | { | |
c5e7ce43 | 3525 | if (b0 != 0) |
40367e2d KH |
3526 | length += 2; |
3527 | ||
c5e7ce43 | 3528 | if (b1 != 0) |
40367e2d KH |
3529 | length += 2; |
3530 | } | |
3531 | ||
c5e7ce43 | 3532 | if (w1 == 0xffff |
40367e2d KH |
3533 | && (TARGET_H8300 ? (code == AND) : (code != IOR))) |
3534 | { | |
3535 | length += 2; | |
3536 | } | |
472f2723 KH |
3537 | else if ((TARGET_H8300H || TARGET_H8300S) |
3538 | && code == IOR | |
3539 | && w1 == 0xffff | |
3540 | && (w0 & 0x8000) != 0) | |
3541 | { | |
3542 | length += 2; | |
3543 | } | |
a6e8d113 KH |
3544 | else if ((TARGET_H8300H || TARGET_H8300S) |
3545 | && code == AND | |
c5e7ce43 | 3546 | && w1 == 0xff00) |
a6e8d113 KH |
3547 | { |
3548 | length += 2; | |
3549 | } | |
40367e2d KH |
3550 | else if (TARGET_H8300H || TARGET_H8300S) |
3551 | { | |
c5e7ce43 | 3552 | if (w1 != 0) |
40367e2d KH |
3553 | length += 4; |
3554 | } | |
3555 | else | |
3556 | { | |
c5e7ce43 | 3557 | if (b2 != 0) |
40367e2d KH |
3558 | length += 2; |
3559 | ||
c5e7ce43 | 3560 | if (b3 != 0) |
40367e2d KH |
3561 | length += 2; |
3562 | } | |
3563 | } | |
3564 | break; | |
3565 | default: | |
8c440872 | 3566 | gcc_unreachable (); |
40367e2d KH |
3567 | } |
3568 | return length; | |
3569 | } | |
b42cff6b | 3570 | |
e9eba255 KH |
3571 | /* Compute which flag bits are valid after a logical insn. */ |
3572 | ||
9690aa8e | 3573 | enum attr_cc |
cb713a8d | 3574 | compute_logical_op_cc (enum machine_mode mode, rtx *operands) |
b42cff6b KH |
3575 | { |
3576 | /* Figure out the logical op that we need to perform. */ | |
3577 | enum rtx_code code = GET_CODE (operands[3]); | |
3578 | /* Pretend that every byte is affected if both operands are registers. */ | |
7798db98 | 3579 | const unsigned HOST_WIDE_INT intval = |
b42cff6b | 3580 | (unsigned HOST_WIDE_INT) ((GET_CODE (operands[2]) == CONST_INT) |
beed8fc0 AO |
3581 | /* Always use the full instruction if the |
3582 | first operand is in memory. It is better | |
3583 | to use define_splits to generate the shorter | |
3584 | sequence where valid. */ | |
3585 | && register_operand (operands[1], VOIDmode) | |
b42cff6b KH |
3586 | ? INTVAL (operands[2]) : 0x55555555); |
3587 | /* The determinant of the algorithm. If we perform an AND, 0 | |
3588 | affects a bit. Otherwise, 1 affects a bit. */ | |
7798db98 | 3589 | const unsigned HOST_WIDE_INT det = (code != AND) ? intval : ~intval; |
f9ac2f95 KH |
3590 | /* Break up DET into pieces. */ |
3591 | const unsigned HOST_WIDE_INT b0 = (det >> 0) & 0xff; | |
3592 | const unsigned HOST_WIDE_INT b1 = (det >> 8) & 0xff; | |
3593 | const unsigned HOST_WIDE_INT w0 = (det >> 0) & 0xffff; | |
3594 | const unsigned HOST_WIDE_INT w1 = (det >> 16) & 0xffff; | |
3595 | int lower_half_easy_p = 0; | |
3596 | int upper_half_easy_p = 0; | |
b42cff6b KH |
3597 | /* Condition code. */ |
3598 | enum attr_cc cc = CC_CLOBBER; | |
3599 | ||
3600 | switch (mode) | |
3601 | { | |
3602 | case HImode: | |
3603 | /* First, see if we can finish with one insn. */ | |
3604 | if ((TARGET_H8300H || TARGET_H8300S) | |
c5e7ce43 KH |
3605 | && b0 != 0 |
3606 | && b1 != 0) | |
b42cff6b KH |
3607 | { |
3608 | cc = CC_SET_ZNV; | |
3609 | } | |
3610 | break; | |
3611 | case SImode: | |
f9ac2f95 KH |
3612 | if (TARGET_H8300H || TARGET_H8300S) |
3613 | { | |
3614 | /* Determine if the lower half can be taken care of in no more | |
3615 | than two bytes. */ | |
3616 | lower_half_easy_p = (b0 == 0 | |
3617 | || b1 == 0 | |
3618 | || (code != IOR && w0 == 0xffff)); | |
3619 | ||
3620 | /* Determine if the upper half can be taken care of in no more | |
3621 | than two bytes. */ | |
3622 | upper_half_easy_p = ((code != IOR && w1 == 0xffff) | |
3623 | || (code == AND && w1 == 0xff00)); | |
3624 | } | |
b42cff6b | 3625 | |
f9ac2f95 KH |
3626 | /* Check if doing everything with one insn is no worse than |
3627 | using multiple insns. */ | |
b42cff6b | 3628 | if ((TARGET_H8300H || TARGET_H8300S) |
f9ac2f95 | 3629 | && w0 != 0 && w1 != 0 |
472f2723 KH |
3630 | && !(lower_half_easy_p && upper_half_easy_p) |
3631 | && !(code == IOR && w1 == 0xffff | |
3632 | && (w0 & 0x8000) != 0 && lower_half_easy_p)) | |
b42cff6b KH |
3633 | { |
3634 | cc = CC_SET_ZNV; | |
3635 | } | |
472f2723 KH |
3636 | else |
3637 | { | |
3638 | if ((TARGET_H8300H || TARGET_H8300S) | |
3639 | && code == IOR | |
3640 | && w1 == 0xffff | |
3641 | && (w0 & 0x8000) != 0) | |
3642 | { | |
3643 | cc = CC_SET_ZNV; | |
3644 | } | |
3645 | } | |
b42cff6b KH |
3646 | break; |
3647 | default: | |
8c440872 | 3648 | gcc_unreachable (); |
b42cff6b KH |
3649 | } |
3650 | return cc; | |
3651 | } | |
366a7b27 | 3652 | \f |
8981ecd3 KH |
3653 | /* Expand a conditional branch. */ |
3654 | ||
3655 | void | |
f90b7a5a | 3656 | h8300_expand_branch (rtx operands[]) |
8981ecd3 | 3657 | { |
f90b7a5a PB |
3658 | enum rtx_code code = GET_CODE (operands[0]); |
3659 | rtx op0 = operands[1]; | |
3660 | rtx op1 = operands[2]; | |
3661 | rtx label = operands[3]; | |
8981ecd3 KH |
3662 | rtx tmp; |
3663 | ||
f90b7a5a PB |
3664 | tmp = gen_rtx_COMPARE (VOIDmode, op0, op1); |
3665 | emit_insn (gen_rtx_SET (VOIDmode, cc0_rtx, tmp)); | |
3666 | ||
8981ecd3 KH |
3667 | tmp = gen_rtx_fmt_ee (code, VOIDmode, cc0_rtx, const0_rtx); |
3668 | tmp = gen_rtx_IF_THEN_ELSE (VOIDmode, tmp, | |
3669 | gen_rtx_LABEL_REF (VOIDmode, label), | |
3670 | pc_rtx); | |
3671 | emit_jump_insn (gen_rtx_SET (VOIDmode, pc_rtx, tmp)); | |
3672 | } | |
f90b7a5a PB |
3673 | |
3674 | ||
3675 | /* Expand a conditional store. */ | |
3676 | ||
3677 | void | |
3678 | h8300_expand_store (rtx operands[]) | |
3679 | { | |
3680 | rtx dest = operands[0]; | |
3681 | enum rtx_code code = GET_CODE (operands[1]); | |
3682 | rtx op0 = operands[2]; | |
3683 | rtx op1 = operands[3]; | |
3684 | rtx tmp; | |
3685 | ||
3686 | tmp = gen_rtx_COMPARE (VOIDmode, op0, op1); | |
3687 | emit_insn (gen_rtx_SET (VOIDmode, cc0_rtx, tmp)); | |
3688 | ||
3689 | tmp = gen_rtx_fmt_ee (code, GET_MODE (dest), cc0_rtx, const0_rtx); | |
3690 | emit_insn (gen_rtx_SET (VOIDmode, dest, tmp)); | |
3691 | } | |
8981ecd3 | 3692 | \f |
48837e29 DE |
3693 | /* Shifts. |
3694 | ||
005e3e05 KH |
3695 | We devote a fair bit of code to getting efficient shifts since we |
3696 | can only shift one bit at a time on the H8/300 and H8/300H and only | |
3db11b5c | 3697 | one or two bits at a time on the H8S. |
005e3e05 KH |
3698 | |
3699 | All shift code falls into one of the following ways of | |
3700 | implementation: | |
3701 | ||
3702 | o SHIFT_INLINE: Emit straight line code for the shift; this is used | |
3703 | when a straight line shift is about the same size or smaller than | |
3704 | a loop. | |
3705 | ||
3706 | o SHIFT_ROT_AND: Rotate the value the opposite direction, then mask | |
3707 | off the bits we don't need. This is used when only a few of the | |
3708 | bits in the original value will survive in the shifted value. | |
3709 | ||
3710 | o SHIFT_SPECIAL: Often it's possible to move a byte or a word to | |
3711 | simulate a shift by 8, 16, or 24 bits. Once moved, a few inline | |
3712 | shifts can be added if the shift count is slightly more than 8 or | |
3713 | 16. This case also includes other oddballs that are not worth | |
f411c849 | 3714 | explaining here. |
005e3e05 | 3715 | |
3db11b5c | 3716 | o SHIFT_LOOP: Emit a loop using one (or two on H8S) bit shifts. |
005e3e05 | 3717 | |
5ec0b66e KH |
3718 | For each shift count, we try to use code that has no trade-off |
3719 | between code size and speed whenever possible. | |
3720 | ||
3721 | If the trade-off is unavoidable, we try to be reasonable. | |
3722 | Specifically, the fastest version is one instruction longer than | |
3723 | the shortest version, we take the fastest version. We also provide | |
3724 | the use a way to switch back to the shortest version with -Os. | |
3725 | ||
3726 | For the details of the shift algorithms for various shift counts, | |
3727 | refer to shift_alg_[qhs]i. */ | |
07aae5c2 | 3728 | |
beed8fc0 AO |
3729 | /* Classify a shift with the given mode and code. OP is the shift amount. */ |
3730 | ||
3731 | enum h8sx_shift_type | |
3732 | h8sx_classify_shift (enum machine_mode mode, enum rtx_code code, rtx op) | |
3733 | { | |
3734 | if (!TARGET_H8300SX) | |
3735 | return H8SX_SHIFT_NONE; | |
3736 | ||
3737 | switch (code) | |
3738 | { | |
3739 | case ASHIFT: | |
3740 | case LSHIFTRT: | |
3741 | /* Check for variable shifts (shll Rs,Rd and shlr Rs,Rd). */ | |
3742 | if (GET_CODE (op) != CONST_INT) | |
3743 | return H8SX_SHIFT_BINARY; | |
3744 | ||
3745 | /* Reject out-of-range shift amounts. */ | |
3746 | if (INTVAL (op) <= 0 || INTVAL (op) >= GET_MODE_BITSIZE (mode)) | |
3747 | return H8SX_SHIFT_NONE; | |
3748 | ||
3749 | /* Power-of-2 shifts are effectively unary operations. */ | |
3750 | if (exact_log2 (INTVAL (op)) >= 0) | |
3751 | return H8SX_SHIFT_UNARY; | |
3752 | ||
3753 | return H8SX_SHIFT_BINARY; | |
3754 | ||
3755 | case ASHIFTRT: | |
3756 | if (op == const1_rtx || op == const2_rtx) | |
3757 | return H8SX_SHIFT_UNARY; | |
3758 | return H8SX_SHIFT_NONE; | |
3759 | ||
3760 | case ROTATE: | |
3761 | if (GET_CODE (op) == CONST_INT | |
3762 | && (INTVAL (op) == 1 | |
3763 | || INTVAL (op) == 2 | |
3764 | || INTVAL (op) == GET_MODE_BITSIZE (mode) - 2 | |
3765 | || INTVAL (op) == GET_MODE_BITSIZE (mode) - 1)) | |
3766 | return H8SX_SHIFT_UNARY; | |
3767 | return H8SX_SHIFT_NONE; | |
3768 | ||
3769 | default: | |
3770 | return H8SX_SHIFT_NONE; | |
3771 | } | |
3772 | } | |
3773 | ||
beed8fc0 AO |
3774 | /* Return the asm template for a single h8sx shift instruction. |
3775 | OPERANDS[0] and OPERANDS[1] are the destination, OPERANDS[2] | |
3776 | is the source and OPERANDS[3] is the shift. SUFFIX is the | |
88cb339e | 3777 | size suffix ('b', 'w' or 'l') and OPTYPE is the h8300_print_operand |
beed8fc0 AO |
3778 | prefix for the destination operand. */ |
3779 | ||
3780 | const char * | |
3781 | output_h8sx_shift (rtx *operands, int suffix, int optype) | |
3782 | { | |
3783 | static char buffer[16]; | |
3784 | const char *stem; | |
3785 | ||
3786 | switch (GET_CODE (operands[3])) | |
3787 | { | |
3788 | case ASHIFT: | |
3789 | stem = "shll"; | |
3790 | break; | |
3791 | ||
3792 | case ASHIFTRT: | |
3793 | stem = "shar"; | |
3794 | break; | |
3795 | ||
3796 | case LSHIFTRT: | |
3797 | stem = "shlr"; | |
3798 | break; | |
3799 | ||
3800 | case ROTATE: | |
3801 | stem = "rotl"; | |
3802 | if (INTVAL (operands[2]) > 2) | |
3803 | { | |
3804 | /* This is really a right rotate. */ | |
3805 | operands[2] = GEN_INT (GET_MODE_BITSIZE (GET_MODE (operands[0])) | |
3806 | - INTVAL (operands[2])); | |
3807 | stem = "rotr"; | |
3808 | } | |
3809 | break; | |
3810 | ||
3811 | default: | |
8c440872 | 3812 | gcc_unreachable (); |
beed8fc0 AO |
3813 | } |
3814 | if (operands[2] == const1_rtx) | |
3815 | sprintf (buffer, "%s.%c\t%%%c0", stem, suffix, optype); | |
3816 | else | |
3817 | sprintf (buffer, "%s.%c\t%%X2,%%%c0", stem, suffix, optype); | |
3818 | return buffer; | |
3819 | } | |
48837e29 | 3820 | |
317d21e9 | 3821 | /* Emit code to do shifts. */ |
48837e29 | 3822 | |
beed8fc0 | 3823 | bool |
9690aa8e | 3824 | expand_a_shift (enum machine_mode mode, enum rtx_code code, rtx operands[]) |
07aae5c2 | 3825 | { |
beed8fc0 AO |
3826 | switch (h8sx_classify_shift (mode, code, operands[2])) |
3827 | { | |
3828 | case H8SX_SHIFT_BINARY: | |
3829 | operands[1] = force_reg (mode, operands[1]); | |
3830 | return false; | |
3831 | ||
3832 | case H8SX_SHIFT_UNARY: | |
3833 | return false; | |
3834 | ||
3835 | case H8SX_SHIFT_NONE: | |
3836 | break; | |
3837 | } | |
3838 | ||
bc9b880c | 3839 | emit_move_insn (copy_rtx (operands[0]), operands[1]); |
07aae5c2 | 3840 | |
07e4d94e KH |
3841 | /* Need a loop to get all the bits we want - we generate the |
3842 | code at emit time, but need to allocate a scratch reg now. */ | |
48837e29 | 3843 | |
c5c76735 JL |
3844 | emit_insn (gen_rtx_PARALLEL |
3845 | (VOIDmode, | |
48837e29 | 3846 | gen_rtvec (2, |
bc9b880c | 3847 | gen_rtx_SET (VOIDmode, copy_rtx (operands[0]), |
0f4c242b | 3848 | gen_rtx_fmt_ee (code, mode, |
bc9b880c | 3849 | copy_rtx (operands[0]), operands[2])), |
c5c76735 JL |
3850 | gen_rtx_CLOBBER (VOIDmode, |
3851 | gen_rtx_SCRATCH (QImode))))); | |
beed8fc0 | 3852 | return true; |
48837e29 DE |
3853 | } |
3854 | ||
48837e29 DE |
3855 | /* Symbols of the various modes which can be used as indices. */ |
3856 | ||
3857 | enum shift_mode | |
1a63219b KH |
3858 | { |
3859 | QIshift, HIshift, SIshift | |
3860 | }; | |
48837e29 | 3861 | |
269c14e1 DE |
3862 | /* For single bit shift insns, record assembler and what bits of the |
3863 | condition code are valid afterwards (represented as various CC_FOO | |
3864 | bits, 0 means CC isn't left in a usable state). */ | |
48837e29 DE |
3865 | |
3866 | struct shift_insn | |
3867 | { | |
8b60264b | 3868 | const char *const assembler; |
9690aa8e | 3869 | const enum attr_cc cc_valid; |
48837e29 DE |
3870 | }; |
3871 | ||
3872 | /* Assembler instruction shift table. | |
3873 | ||
3874 | These tables are used to look up the basic shifts. | |
07e4d94e | 3875 | They are indexed by cpu, shift_type, and mode. */ |
07aae5c2 | 3876 | |
48837e29 DE |
3877 | static const struct shift_insn shift_one[2][3][3] = |
3878 | { | |
3879 | /* H8/300 */ | |
3880 | { | |
3881 | /* SHIFT_ASHIFT */ | |
3882 | { | |
45ca2106 KH |
3883 | { "shll\t%X0", CC_SET_ZNV }, |
3884 | { "add.w\t%T0,%T0", CC_SET_ZN }, | |
3885 | { "add.w\t%f0,%f0\n\taddx\t%y0,%y0\n\taddx\t%z0,%z0", CC_CLOBBER } | |
48837e29 DE |
3886 | }, |
3887 | /* SHIFT_LSHIFTRT */ | |
3888 | { | |
45ca2106 KH |
3889 | { "shlr\t%X0", CC_SET_ZNV }, |
3890 | { "shlr\t%t0\n\trotxr\t%s0", CC_CLOBBER }, | |
3891 | { "shlr\t%z0\n\trotxr\t%y0\n\trotxr\t%x0\n\trotxr\t%w0", CC_CLOBBER } | |
48837e29 DE |
3892 | }, |
3893 | /* SHIFT_ASHIFTRT */ | |
3894 | { | |
45ca2106 KH |
3895 | { "shar\t%X0", CC_SET_ZNV }, |
3896 | { "shar\t%t0\n\trotxr\t%s0", CC_CLOBBER }, | |
3897 | { "shar\t%z0\n\trotxr\t%y0\n\trotxr\t%x0\n\trotxr\t%w0", CC_CLOBBER } | |
48837e29 DE |
3898 | } |
3899 | }, | |
3900 | /* H8/300H */ | |
3901 | { | |
3902 | /* SHIFT_ASHIFT */ | |
3903 | { | |
45ca2106 KH |
3904 | { "shll.b\t%X0", CC_SET_ZNV }, |
3905 | { "shll.w\t%T0", CC_SET_ZNV }, | |
3906 | { "shll.l\t%S0", CC_SET_ZNV } | |
48837e29 DE |
3907 | }, |
3908 | /* SHIFT_LSHIFTRT */ | |
3909 | { | |
45ca2106 KH |
3910 | { "shlr.b\t%X0", CC_SET_ZNV }, |
3911 | { "shlr.w\t%T0", CC_SET_ZNV }, | |
3912 | { "shlr.l\t%S0", CC_SET_ZNV } | |
48837e29 DE |
3913 | }, |
3914 | /* SHIFT_ASHIFTRT */ | |
3915 | { | |
45ca2106 KH |
3916 | { "shar.b\t%X0", CC_SET_ZNV }, |
3917 | { "shar.w\t%T0", CC_SET_ZNV }, | |
3918 | { "shar.l\t%S0", CC_SET_ZNV } | |
48837e29 DE |
3919 | } |
3920 | } | |
3921 | }; | |
07aae5c2 | 3922 | |
51c0c1d7 JL |
3923 | static const struct shift_insn shift_two[3][3] = |
3924 | { | |
3925 | /* SHIFT_ASHIFT */ | |
3926 | { | |
45ca2106 KH |
3927 | { "shll.b\t#2,%X0", CC_SET_ZNV }, |
3928 | { "shll.w\t#2,%T0", CC_SET_ZNV }, | |
3929 | { "shll.l\t#2,%S0", CC_SET_ZNV } | |
51c0c1d7 JL |
3930 | }, |
3931 | /* SHIFT_LSHIFTRT */ | |
3932 | { | |
45ca2106 KH |
3933 | { "shlr.b\t#2,%X0", CC_SET_ZNV }, |
3934 | { "shlr.w\t#2,%T0", CC_SET_ZNV }, | |
3935 | { "shlr.l\t#2,%S0", CC_SET_ZNV } | |
51c0c1d7 JL |
3936 | }, |
3937 | /* SHIFT_ASHIFTRT */ | |
3938 | { | |
45ca2106 KH |
3939 | { "shar.b\t#2,%X0", CC_SET_ZNV }, |
3940 | { "shar.w\t#2,%T0", CC_SET_ZNV }, | |
3941 | { "shar.l\t#2,%S0", CC_SET_ZNV } | |
51c0c1d7 JL |
3942 | } |
3943 | }; | |
3944 | ||
48837e29 DE |
3945 | /* Rotates are organized by which shift they'll be used in implementing. |
3946 | There's no need to record whether the cc is valid afterwards because | |
3947 | it is the AND insn that will decide this. */ | |
07aae5c2 | 3948 | |
48837e29 DE |
3949 | static const char *const rotate_one[2][3][3] = |
3950 | { | |
3951 | /* H8/300 */ | |
3952 | { | |
3953 | /* SHIFT_ASHIFT */ | |
3954 | { | |
51c0c1d7 JL |
3955 | "rotr\t%X0", |
3956 | "shlr\t%t0\n\trotxr\t%s0\n\tbst\t#7,%t0", | |
48837e29 DE |
3957 | 0 |
3958 | }, | |
3959 | /* SHIFT_LSHIFTRT */ | |
3960 | { | |
51c0c1d7 JL |
3961 | "rotl\t%X0", |
3962 | "shll\t%s0\n\trotxl\t%t0\n\tbst\t#0,%s0", | |
48837e29 DE |
3963 | 0 |
3964 | }, | |
3965 | /* SHIFT_ASHIFTRT */ | |
3966 | { | |
51c0c1d7 JL |
3967 | "rotl\t%X0", |
3968 | "shll\t%s0\n\trotxl\t%t0\n\tbst\t#0,%s0", | |
48837e29 | 3969 | 0 |
07aae5c2 | 3970 | } |
48837e29 DE |
3971 | }, |
3972 | /* H8/300H */ | |
3973 | { | |
3974 | /* SHIFT_ASHIFT */ | |
3975 | { | |
51c0c1d7 JL |
3976 | "rotr.b\t%X0", |
3977 | "rotr.w\t%T0", | |
3978 | "rotr.l\t%S0" | |
48837e29 DE |
3979 | }, |
3980 | /* SHIFT_LSHIFTRT */ | |
07aae5c2 | 3981 | { |
51c0c1d7 JL |
3982 | "rotl.b\t%X0", |
3983 | "rotl.w\t%T0", | |
3984 | "rotl.l\t%S0" | |
48837e29 DE |
3985 | }, |
3986 | /* SHIFT_ASHIFTRT */ | |
3987 | { | |
51c0c1d7 JL |
3988 | "rotl.b\t%X0", |
3989 | "rotl.w\t%T0", | |
3990 | "rotl.l\t%S0" | |
48837e29 DE |
3991 | } |
3992 | } | |
3993 | }; | |
3994 | ||
51c0c1d7 JL |
3995 | static const char *const rotate_two[3][3] = |
3996 | { | |
3997 | /* SHIFT_ASHIFT */ | |
3998 | { | |
3999 | "rotr.b\t#2,%X0", | |
4000 | "rotr.w\t#2,%T0", | |
4001 | "rotr.l\t#2,%S0" | |
4002 | }, | |
4003 | /* SHIFT_LSHIFTRT */ | |
4004 | { | |
4005 | "rotl.b\t#2,%X0", | |
4006 | "rotl.w\t#2,%T0", | |
4007 | "rotl.l\t#2,%S0" | |
4008 | }, | |
4009 | /* SHIFT_ASHIFTRT */ | |
4010 | { | |
4011 | "rotl.b\t#2,%X0", | |
4012 | "rotl.w\t#2,%T0", | |
4013 | "rotl.l\t#2,%S0" | |
4014 | } | |
4015 | }; | |
4016 | ||
35fb3d1f KH |
4017 | struct shift_info { |
4018 | /* Shift algorithm. */ | |
4019 | enum shift_alg alg; | |
4020 | ||
4021 | /* The number of bits to be shifted by shift1 and shift2. Valid | |
4022 | when ALG is SHIFT_SPECIAL. */ | |
4023 | unsigned int remainder; | |
4024 | ||
4025 | /* Special insn for a shift. Valid when ALG is SHIFT_SPECIAL. */ | |
4026 | const char *special; | |
4027 | ||
4028 | /* Insn for a one-bit shift. Valid when ALG is either SHIFT_INLINE | |
9cd10576 | 4029 | or SHIFT_SPECIAL, and REMAINDER is nonzero. */ |
35fb3d1f KH |
4030 | const char *shift1; |
4031 | ||
4032 | /* Insn for a two-bit shift. Valid when ALG is either SHIFT_INLINE | |
9cd10576 | 4033 | or SHIFT_SPECIAL, and REMAINDER is nonzero. */ |
35fb3d1f KH |
4034 | const char *shift2; |
4035 | ||
45ca2106 | 4036 | /* CC status for SHIFT_INLINE. */ |
9690aa8e | 4037 | enum attr_cc cc_inline; |
45ca2106 KH |
4038 | |
4039 | /* CC status for SHIFT_SPECIAL. */ | |
9690aa8e | 4040 | enum attr_cc cc_special; |
35fb3d1f KH |
4041 | }; |
4042 | ||
cb713a8d KH |
4043 | static void get_shift_alg (enum shift_type, |
4044 | enum shift_mode, unsigned int, | |
4045 | struct shift_info *); | |
441d04c6 | 4046 | |
c009a745 KH |
4047 | /* Given SHIFT_TYPE, SHIFT_MODE, and shift count COUNT, determine the |
4048 | best algorithm for doing the shift. The assembler code is stored | |
5ec0b66e KH |
4049 | in the pointers in INFO. We achieve the maximum efficiency in most |
4050 | cases when !TARGET_H8300. In case of TARGET_H8300, shifts in | |
4051 | SImode in particular have a lot of room to optimize. | |
4052 | ||
4053 | We first determine the strategy of the shift algorithm by a table | |
4054 | lookup. If that tells us to use a hand crafted assembly code, we | |
4055 | go into the big switch statement to find what that is. Otherwise, | |
4056 | we resort to a generic way, such as inlining. In either case, the | |
4057 | result is returned through INFO. */ | |
48837e29 | 4058 | |
cb33eb17 | 4059 | static void |
cb713a8d KH |
4060 | get_shift_alg (enum shift_type shift_type, enum shift_mode shift_mode, |
4061 | unsigned int count, struct shift_info *info) | |
48837e29 | 4062 | { |
b9b575e6 | 4063 | enum h8_cpu cpu; |
769828ab KH |
4064 | |
4065 | /* Find the target CPU. */ | |
4066 | if (TARGET_H8300) | |
b9b575e6 | 4067 | cpu = H8_300; |
769828ab | 4068 | else if (TARGET_H8300H) |
b9b575e6 | 4069 | cpu = H8_300H; |
769828ab | 4070 | else |
b9b575e6 | 4071 | cpu = H8_S; |
769828ab | 4072 | |
96eaf358 | 4073 | /* Find the shift algorithm. */ |
b9b575e6 | 4074 | info->alg = SHIFT_LOOP; |
48837e29 DE |
4075 | switch (shift_mode) |
4076 | { | |
4077 | case QIshift: | |
b9b575e6 | 4078 | if (count < GET_MODE_BITSIZE (QImode)) |
96eaf358 KH |
4079 | info->alg = shift_alg_qi[cpu][shift_type][count]; |
4080 | break; | |
769828ab | 4081 | |
96eaf358 | 4082 | case HIshift: |
b9b575e6 | 4083 | if (count < GET_MODE_BITSIZE (HImode)) |
96eaf358 KH |
4084 | info->alg = shift_alg_hi[cpu][shift_type][count]; |
4085 | break; | |
4086 | ||
4087 | case SIshift: | |
b9b575e6 | 4088 | if (count < GET_MODE_BITSIZE (SImode)) |
96eaf358 KH |
4089 | info->alg = shift_alg_si[cpu][shift_type][count]; |
4090 | break; | |
4091 | ||
4092 | default: | |
8c440872 | 4093 | gcc_unreachable (); |
96eaf358 KH |
4094 | } |
4095 | ||
4096 | /* Fill in INFO. Return unless we have SHIFT_SPECIAL. */ | |
4097 | switch (info->alg) | |
4098 | { | |
4099 | case SHIFT_INLINE: | |
4100 | info->remainder = count; | |
4101 | /* Fall through. */ | |
4102 | ||
4103 | case SHIFT_LOOP: | |
4104 | /* It is up to the caller to know that looping clobbers cc. */ | |
4105 | info->shift1 = shift_one[cpu_type][shift_type][shift_mode].assembler; | |
4106 | info->shift2 = shift_two[shift_type][shift_mode].assembler; | |
45ca2106 | 4107 | info->cc_inline = shift_one[cpu_type][shift_type][shift_mode].cc_valid; |
96eaf358 KH |
4108 | goto end; |
4109 | ||
4110 | case SHIFT_ROT_AND: | |
4111 | info->shift1 = rotate_one[cpu_type][shift_type][shift_mode]; | |
4112 | info->shift2 = rotate_two[shift_type][shift_mode]; | |
45ca2106 | 4113 | info->cc_inline = CC_CLOBBER; |
96eaf358 KH |
4114 | goto end; |
4115 | ||
4116 | case SHIFT_SPECIAL: | |
4117 | /* REMAINDER is 0 for most cases, so initialize it to 0. */ | |
4118 | info->remainder = 0; | |
4119 | info->shift1 = shift_one[cpu_type][shift_type][shift_mode].assembler; | |
4120 | info->shift2 = shift_two[shift_type][shift_mode].assembler; | |
45ca2106 KH |
4121 | info->cc_inline = shift_one[cpu_type][shift_type][shift_mode].cc_valid; |
4122 | info->cc_special = CC_CLOBBER; | |
96eaf358 KH |
4123 | break; |
4124 | } | |
51c0c1d7 | 4125 | |
96eaf358 KH |
4126 | /* Here we only deal with SHIFT_SPECIAL. */ |
4127 | switch (shift_mode) | |
4128 | { | |
4129 | case QIshift: | |
769828ab KH |
4130 | /* For ASHIFTRT by 7 bits, the sign bit is simply replicated |
4131 | through the entire value. */ | |
8c440872 NS |
4132 | gcc_assert (shift_type == SHIFT_ASHIFTRT && count == 7); |
4133 | info->special = "shll\t%X0\n\tsubx\t%X0,%X0"; | |
4134 | goto end; | |
769828ab KH |
4135 | |
4136 | case HIshift: | |
769828ab | 4137 | if (count == 7) |
51c0c1d7 | 4138 | { |
a77b1dbc | 4139 | switch (shift_type) |
51c0c1d7 | 4140 | { |
a77b1dbc KH |
4141 | case SHIFT_ASHIFT: |
4142 | if (TARGET_H8300) | |
4143 | info->special = "shar.b\t%t0\n\tmov.b\t%s0,%t0\n\trotxr.b\t%t0\n\trotr.b\t%s0\n\tand.b\t#0x80,%s0"; | |
4144 | else | |
4145 | info->special = "shar.b\t%t0\n\tmov.b\t%s0,%t0\n\trotxr.w\t%T0\n\tand.b\t#0x80,%s0"; | |
692b7eb3 | 4146 | goto end; |
a77b1dbc KH |
4147 | case SHIFT_LSHIFTRT: |
4148 | if (TARGET_H8300) | |
4149 | info->special = "shal.b\t%s0\n\tmov.b\t%t0,%s0\n\trotxl.b\t%s0\n\trotl.b\t%t0\n\tand.b\t#0x01,%t0"; | |
4150 | else | |
4151 | info->special = "shal.b\t%s0\n\tmov.b\t%t0,%s0\n\trotxl.w\t%T0\n\tand.b\t#0x01,%t0"; | |
692b7eb3 | 4152 | goto end; |
a77b1dbc | 4153 | case SHIFT_ASHIFTRT: |
35fb3d1f | 4154 | info->special = "shal.b\t%s0\n\tmov.b\t%t0,%s0\n\trotxl.b\t%s0\n\tsubx\t%t0,%t0"; |
692b7eb3 | 4155 | goto end; |
48837e29 | 4156 | } |
07aae5c2 | 4157 | } |
b30686ec | 4158 | else if ((8 <= count && count <= 13) |
a38b3eea | 4159 | || (TARGET_H8300S && count == 14)) |
07aae5c2 | 4160 | { |
a7812c0b KH |
4161 | info->remainder = count - 8; |
4162 | ||
51c0c1d7 | 4163 | switch (shift_type) |
48837e29 | 4164 | { |
51c0c1d7 | 4165 | case SHIFT_ASHIFT: |
35fb3d1f | 4166 | info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0"; |
692b7eb3 | 4167 | goto end; |
51c0c1d7 | 4168 | case SHIFT_LSHIFTRT: |
a7612343 KH |
4169 | if (TARGET_H8300) |
4170 | { | |
4171 | info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0"; | |
4172 | info->shift1 = "shlr.b\t%s0"; | |
45ca2106 | 4173 | info->cc_inline = CC_SET_ZNV; |
a7612343 KH |
4174 | } |
4175 | else | |
4176 | { | |
4177 | info->special = "mov.b\t%t0,%s0\n\textu.w\t%T0"; | |
45ca2106 | 4178 | info->cc_special = CC_SET_ZNV; |
a7612343 | 4179 | } |
692b7eb3 | 4180 | goto end; |
51c0c1d7 JL |
4181 | case SHIFT_ASHIFTRT: |
4182 | if (TARGET_H8300) | |
a7612343 KH |
4183 | { |
4184 | info->special = "mov.b\t%t0,%s0\n\tbld\t#7,%s0\n\tsubx\t%t0,%t0"; | |
4185 | info->shift1 = "shar.b\t%s0"; | |
a7612343 | 4186 | } |
51c0c1d7 | 4187 | else |
a7612343 KH |
4188 | { |
4189 | info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0"; | |
45ca2106 | 4190 | info->cc_special = CC_SET_ZNV; |
a7612343 | 4191 | } |
692b7eb3 | 4192 | goto end; |
51c0c1d7 JL |
4193 | } |
4194 | } | |
5e98fba2 DD |
4195 | else if (count == 14) |
4196 | { | |
4197 | switch (shift_type) | |
4198 | { | |
4199 | case SHIFT_ASHIFT: | |
4200 | if (TARGET_H8300) | |
4201 | info->special = "mov.b\t%s0,%t0\n\trotr.b\t%t0\n\trotr.b\t%t0\n\tand.b\t#0xC0,%t0\n\tsub.b\t%s0,%s0"; | |
4202 | goto end; | |
4203 | case SHIFT_LSHIFTRT: | |
4204 | if (TARGET_H8300) | |
4205 | info->special = "mov.b\t%t0,%s0\n\trotl.b\t%s0\n\trotl.b\t%s0\n\tand.b\t#3,%s0\n\tsub.b\t%t0,%t0"; | |
4206 | goto end; | |
4207 | case SHIFT_ASHIFTRT: | |
4208 | if (TARGET_H8300) | |
4209 | info->special = "mov.b\t%t0,%s0\n\tshll.b\t%s0\n\tsubx.b\t%t0,%t0\n\tshll.b\t%s0\n\tmov.b\t%t0,%s0\n\tbst.b\t#0,%s0"; | |
4210 | else if (TARGET_H8300H) | |
45ca2106 KH |
4211 | { |
4212 | info->special = "shll.b\t%t0\n\tsubx.b\t%s0,%s0\n\tshll.b\t%t0\n\trotxl.b\t%s0\n\texts.w\t%T0"; | |
4213 | info->cc_special = CC_SET_ZNV; | |
4214 | } | |
5e98fba2 | 4215 | else /* TARGET_H8300S */ |
8c440872 | 4216 | gcc_unreachable (); |
5e98fba2 DD |
4217 | goto end; |
4218 | } | |
4219 | } | |
1e41e866 | 4220 | else if (count == 15) |
51c0c1d7 | 4221 | { |
1e41e866 KH |
4222 | switch (shift_type) |
4223 | { | |
4224 | case SHIFT_ASHIFT: | |
4225 | info->special = "bld\t#0,%s0\n\txor\t%s0,%s0\n\txor\t%t0,%t0\n\tbst\t#7,%t0"; | |
4226 | goto end; | |
4227 | case SHIFT_LSHIFTRT: | |
4228 | info->special = "bld\t#7,%t0\n\txor\t%s0,%s0\n\txor\t%t0,%t0\n\tbst\t#0,%s0"; | |
4229 | goto end; | |
4230 | case SHIFT_ASHIFTRT: | |
4231 | info->special = "shll\t%t0\n\tsubx\t%t0,%t0\n\tmov.b\t%t0,%s0"; | |
4232 | goto end; | |
4233 | } | |
07aae5c2 | 4234 | } |
8c440872 | 4235 | gcc_unreachable (); |
51c0c1d7 | 4236 | |
48837e29 | 4237 | case SIshift: |
1e41e866 | 4238 | if (TARGET_H8300 && 8 <= count && count <= 9) |
48837e29 | 4239 | { |
1e41e866 KH |
4240 | info->remainder = count - 8; |
4241 | ||
51c0c1d7 | 4242 | switch (shift_type) |
48837e29 | 4243 | { |
51c0c1d7 | 4244 | case SHIFT_ASHIFT: |
35fb3d1f | 4245 | info->special = "mov.b\t%y0,%z0\n\tmov.b\t%x0,%y0\n\tmov.b\t%w0,%x0\n\tsub.b\t%w0,%w0"; |
692b7eb3 | 4246 | goto end; |
51c0c1d7 | 4247 | case SHIFT_LSHIFTRT: |
35fb3d1f | 4248 | info->special = "mov.b\t%x0,%w0\n\tmov.b\t%y0,%x0\n\tmov.b\t%z0,%y0\n\tsub.b\t%z0,%z0"; |
1e41e866 | 4249 | info->shift1 = "shlr\t%y0\n\trotxr\t%x0\n\trotxr\t%w0"; |
692b7eb3 | 4250 | goto end; |
51c0c1d7 | 4251 | case SHIFT_ASHIFTRT: |
35fb3d1f | 4252 | info->special = "mov.b\t%x0,%w0\n\tmov.b\t%y0,%x0\n\tmov.b\t%z0,%y0\n\tshll\t%z0\n\tsubx\t%z0,%z0"; |
692b7eb3 | 4253 | goto end; |
48837e29 | 4254 | } |
48837e29 | 4255 | } |
e6bcfef9 JS |
4256 | else if (count == 8 && !TARGET_H8300) |
4257 | { | |
4258 | switch (shift_type) | |
4259 | { | |
4260 | case SHIFT_ASHIFT: | |
35fb3d1f | 4261 | info->special = "mov.w\t%e0,%f4\n\tmov.b\t%s4,%t4\n\tmov.b\t%t0,%s4\n\tmov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tmov.w\t%f4,%e0"; |
692b7eb3 | 4262 | goto end; |
e6bcfef9 | 4263 | case SHIFT_LSHIFTRT: |
35fb3d1f | 4264 | info->special = "mov.w\t%e0,%f4\n\tmov.b\t%t0,%s0\n\tmov.b\t%s4,%t0\n\tmov.b\t%t4,%s4\n\textu.w\t%f4\n\tmov.w\t%f4,%e0"; |
692b7eb3 | 4265 | goto end; |
e6bcfef9 | 4266 | case SHIFT_ASHIFTRT: |
35fb3d1f | 4267 | info->special = "mov.w\t%e0,%f4\n\tmov.b\t%t0,%s0\n\tmov.b\t%s4,%t0\n\tmov.b\t%t4,%s4\n\texts.w\t%f4\n\tmov.w\t%f4,%e0"; |
692b7eb3 | 4268 | goto end; |
e6bcfef9 JS |
4269 | } |
4270 | } | |
1e41e866 KH |
4271 | else if (count == 15 && TARGET_H8300) |
4272 | { | |
4273 | switch (shift_type) | |
4274 | { | |
4275 | case SHIFT_ASHIFT: | |
8c440872 | 4276 | gcc_unreachable (); |
1e41e866 | 4277 | case SHIFT_LSHIFTRT: |
a35abc3c | 4278 | info->special = "bld\t#7,%z0\n\tmov.w\t%e0,%f0\n\txor\t%y0,%y0\n\txor\t%z0,%z0\n\trotxl\t%w0\n\trotxl\t%x0\n\trotxl\t%y0"; |
1e41e866 KH |
4279 | goto end; |
4280 | case SHIFT_ASHIFTRT: | |
a35abc3c | 4281 | info->special = "bld\t#7,%z0\n\tmov.w\t%e0,%f0\n\trotxl\t%w0\n\trotxl\t%x0\n\tsubx\t%y0,%y0\n\tsubx\t%z0,%z0"; |
1e41e866 KH |
4282 | goto end; |
4283 | } | |
4284 | } | |
dd69e230 KH |
4285 | else if (count == 15 && !TARGET_H8300) |
4286 | { | |
4287 | switch (shift_type) | |
4288 | { | |
4289 | case SHIFT_ASHIFT: | |
4290 | info->special = "shlr.w\t%e0\n\tmov.w\t%f0,%e0\n\txor.w\t%f0,%f0\n\trotxr.l\t%S0"; | |
45ca2106 | 4291 | info->cc_special = CC_SET_ZNV; |
dd69e230 KH |
4292 | goto end; |
4293 | case SHIFT_LSHIFTRT: | |
18cf8dda | 4294 | info->special = "shll.w\t%f0\n\tmov.w\t%e0,%f0\n\txor.w\t%e0,%e0\n\trotxl.l\t%S0"; |
45ca2106 | 4295 | info->cc_special = CC_SET_ZNV; |
dd69e230 | 4296 | goto end; |
aefc5826 | 4297 | case SHIFT_ASHIFTRT: |
8c440872 | 4298 | gcc_unreachable (); |
dd69e230 KH |
4299 | } |
4300 | } | |
1e41e866 | 4301 | else if ((TARGET_H8300 && 16 <= count && count <= 20) |
a7812c0b | 4302 | || (TARGET_H8300H && 16 <= count && count <= 19) |
e0f19bd0 | 4303 | || (TARGET_H8300S && 16 <= count && count <= 21)) |
48837e29 | 4304 | { |
a7812c0b KH |
4305 | info->remainder = count - 16; |
4306 | ||
48837e29 DE |
4307 | switch (shift_type) |
4308 | { | |
4309 | case SHIFT_ASHIFT: | |
35fb3d1f | 4310 | info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0"; |
1e41e866 | 4311 | if (TARGET_H8300) |
b30686ec | 4312 | info->shift1 = "add.w\t%e0,%e0"; |
692b7eb3 | 4313 | goto end; |
51c0c1d7 | 4314 | case SHIFT_LSHIFTRT: |
1e41e866 KH |
4315 | if (TARGET_H8300) |
4316 | { | |
a7612343 KH |
4317 | info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0"; |
4318 | info->shift1 = "shlr\t%x0\n\trotxr\t%w0"; | |
1e41e866 KH |
4319 | } |
4320 | else | |
4321 | { | |
a7612343 | 4322 | info->special = "mov.w\t%e0,%f0\n\textu.l\t%S0"; |
45ca2106 | 4323 | info->cc_special = CC_SET_ZNV; |
1e41e866 | 4324 | } |
692b7eb3 | 4325 | goto end; |
51c0c1d7 JL |
4326 | case SHIFT_ASHIFTRT: |
4327 | if (TARGET_H8300) | |
1e41e866 KH |
4328 | { |
4329 | info->special = "mov.w\t%e0,%f0\n\tshll\t%z0\n\tsubx\t%z0,%z0\n\tmov.b\t%z0,%y0"; | |
4330 | info->shift1 = "shar\t%x0\n\trotxr\t%w0"; | |
4331 | } | |
51c0c1d7 | 4332 | else |
1e41e866 KH |
4333 | { |
4334 | info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0"; | |
45ca2106 | 4335 | info->cc_special = CC_SET_ZNV; |
1e41e866 | 4336 | } |
692b7eb3 | 4337 | goto end; |
51c0c1d7 JL |
4338 | } |
4339 | } | |
1e41e866 | 4340 | else if (TARGET_H8300 && 24 <= count && count <= 28) |
f9477efd KH |
4341 | { |
4342 | info->remainder = count - 24; | |
f0b6f9a6 | 4343 | |
f9477efd KH |
4344 | switch (shift_type) |
4345 | { | |
4346 | case SHIFT_ASHIFT: | |
4347 | info->special = "mov.b\t%w0,%z0\n\tsub.b\t%y0,%y0\n\tsub.w\t%f0,%f0"; | |
4348 | info->shift1 = "shll.b\t%z0"; | |
45ca2106 | 4349 | info->cc_inline = CC_SET_ZNV; |
f9477efd KH |
4350 | goto end; |
4351 | case SHIFT_LSHIFTRT: | |
4352 | info->special = "mov.b\t%z0,%w0\n\tsub.b\t%x0,%x0\n\tsub.w\t%e0,%e0"; | |
4353 | info->shift1 = "shlr.b\t%w0"; | |
45ca2106 | 4354 | info->cc_inline = CC_SET_ZNV; |
f9477efd KH |
4355 | goto end; |
4356 | case SHIFT_ASHIFTRT: | |
4357 | info->special = "mov.b\t%z0,%w0\n\tbld\t#7,%w0\n\tsubx\t%x0,%x0\n\tsubx\t%x0,%x0\n\tsubx\t%x0,%x0"; | |
4358 | info->shift1 = "shar.b\t%w0"; | |
45ca2106 | 4359 | info->cc_inline = CC_SET_ZNV; |
7f473594 KH |
4360 | goto end; |
4361 | } | |
4362 | } | |
4a4ae922 KH |
4363 | else if ((TARGET_H8300H && count == 24) |
4364 | || (TARGET_H8300S && 24 <= count && count <= 25)) | |
e6bcfef9 | 4365 | { |
4a4ae922 KH |
4366 | info->remainder = count - 24; |
4367 | ||
e6bcfef9 JS |
4368 | switch (shift_type) |
4369 | { | |
4370 | case SHIFT_ASHIFT: | |
35fb3d1f | 4371 | info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tmov.w\t%f0,%e0\n\tsub.w\t%f0,%f0"; |
692b7eb3 | 4372 | goto end; |
e6bcfef9 | 4373 | case SHIFT_LSHIFTRT: |
35fb3d1f | 4374 | info->special = "mov.w\t%e0,%f0\n\tmov.b\t%t0,%s0\n\textu.w\t%f0\n\textu.l\t%S0"; |
45ca2106 | 4375 | info->cc_special = CC_SET_ZNV; |
692b7eb3 | 4376 | goto end; |
e6bcfef9 | 4377 | case SHIFT_ASHIFTRT: |
35fb3d1f | 4378 | info->special = "mov.w\t%e0,%f0\n\tmov.b\t%t0,%s0\n\texts.w\t%f0\n\texts.l\t%S0"; |
45ca2106 | 4379 | info->cc_special = CC_SET_ZNV; |
692b7eb3 | 4380 | goto end; |
e6bcfef9 JS |
4381 | } |
4382 | } | |
1e5bdc40 KH |
4383 | else if (!TARGET_H8300 && count == 28) |
4384 | { | |
4385 | switch (shift_type) | |
4386 | { | |
4387 | case SHIFT_ASHIFT: | |
4388 | if (TARGET_H8300H) | |
4389 | info->special = "sub.w\t%e0,%e0\n\trotr.l\t%S0\n\trotr.l\t%S0\n\trotr.l\t%S0\n\trotr.l\t%S0\n\tsub.w\t%f0,%f0"; | |
4390 | else | |
4391 | info->special = "sub.w\t%e0,%e0\n\trotr.l\t#2,%S0\n\trotr.l\t#2,%S0\n\tsub.w\t%f0,%f0"; | |
1e5bdc40 KH |
4392 | goto end; |
4393 | case SHIFT_LSHIFTRT: | |
4394 | if (TARGET_H8300H) | |
45ca2106 KH |
4395 | { |
4396 | info->special = "sub.w\t%f0,%f0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\textu.l\t%S0"; | |
4397 | info->cc_special = CC_SET_ZNV; | |
4398 | } | |
1e5bdc40 | 4399 | else |
a7612343 | 4400 | info->special = "sub.w\t%f0,%f0\n\trotl.l\t#2,%S0\n\trotl.l\t#2,%S0\n\textu.l\t%S0"; |
1e5bdc40 KH |
4401 | goto end; |
4402 | case SHIFT_ASHIFTRT: | |
8c440872 | 4403 | gcc_unreachable (); |
1e5bdc40 KH |
4404 | } |
4405 | } | |
4406 | else if (!TARGET_H8300 && count == 29) | |
4407 | { | |
4408 | switch (shift_type) | |
4409 | { | |
4410 | case SHIFT_ASHIFT: | |
4411 | if (TARGET_H8300H) | |
4412 | info->special = "sub.w\t%e0,%e0\n\trotr.l\t%S0\n\trotr.l\t%S0\n\trotr.l\t%S0\n\tsub.w\t%f0,%f0"; | |
4413 | else | |
4414 | info->special = "sub.w\t%e0,%e0\n\trotr.l\t#2,%S0\n\trotr.l\t%S0\n\tsub.w\t%f0,%f0"; | |
1e5bdc40 KH |
4415 | goto end; |
4416 | case SHIFT_LSHIFTRT: | |
4417 | if (TARGET_H8300H) | |
45ca2106 KH |
4418 | { |
4419 | info->special = "sub.w\t%f0,%f0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\textu.l\t%S0"; | |
4420 | info->cc_special = CC_SET_ZNV; | |
4421 | } | |
1e5bdc40 | 4422 | else |
45ca2106 KH |
4423 | { |
4424 | info->special = "sub.w\t%f0,%f0\n\trotl.l\t#2,%S0\n\trotl.l\t%S0\n\textu.l\t%S0"; | |
4425 | info->cc_special = CC_SET_ZNV; | |
4426 | } | |
1e5bdc40 KH |
4427 | goto end; |
4428 | case SHIFT_ASHIFTRT: | |
8c440872 | 4429 | gcc_unreachable (); |
1e5bdc40 KH |
4430 | } |
4431 | } | |
4432 | else if (!TARGET_H8300 && count == 30) | |
4433 | { | |
4434 | switch (shift_type) | |
4435 | { | |
4436 | case SHIFT_ASHIFT: | |
4437 | if (TARGET_H8300H) | |
4438 | info->special = "sub.w\t%e0,%e0\n\trotr.l\t%S0\n\trotr.l\t%S0\n\tsub.w\t%f0,%f0"; | |
4439 | else | |
4440 | info->special = "sub.w\t%e0,%e0\n\trotr.l\t#2,%S0\n\tsub.w\t%f0,%f0"; | |
1e5bdc40 KH |
4441 | goto end; |
4442 | case SHIFT_LSHIFTRT: | |
4443 | if (TARGET_H8300H) | |
a7612343 | 4444 | info->special = "sub.w\t%f0,%f0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\textu.l\t%S0"; |
1e5bdc40 | 4445 | else |
a7612343 | 4446 | info->special = "sub.w\t%f0,%f0\n\trotl.l\t#2,%S0\n\textu.l\t%S0"; |
1e5bdc40 KH |
4447 | goto end; |
4448 | case SHIFT_ASHIFTRT: | |
8c440872 | 4449 | gcc_unreachable (); |
1e5bdc40 KH |
4450 | } |
4451 | } | |
48837e29 DE |
4452 | else if (count == 31) |
4453 | { | |
dd69e230 | 4454 | if (TARGET_H8300) |
48837e29 | 4455 | { |
dd69e230 KH |
4456 | switch (shift_type) |
4457 | { | |
4458 | case SHIFT_ASHIFT: | |
4459 | info->special = "sub.w\t%e0,%e0\n\tshlr\t%w0\n\tmov.w\t%e0,%f0\n\trotxr\t%z0"; | |
4460 | goto end; | |
4461 | case SHIFT_LSHIFTRT: | |
4462 | info->special = "sub.w\t%f0,%f0\n\tshll\t%z0\n\tmov.w\t%f0,%e0\n\trotxl\t%w0"; | |
4463 | goto end; | |
4464 | case SHIFT_ASHIFTRT: | |
4465 | info->special = "shll\t%z0\n\tsubx\t%w0,%w0\n\tmov.b\t%w0,%x0\n\tmov.w\t%f0,%e0"; | |
4466 | goto end; | |
4467 | } | |
48837e29 DE |
4468 | } |
4469 | else | |
4470 | { | |
dd69e230 | 4471 | switch (shift_type) |
48837e29 | 4472 | { |
dd69e230 KH |
4473 | case SHIFT_ASHIFT: |
4474 | info->special = "shlr.l\t%S0\n\txor.l\t%S0,%S0\n\trotxr.l\t%S0"; | |
45ca2106 | 4475 | info->cc_special = CC_SET_ZNV; |
dd69e230 KH |
4476 | goto end; |
4477 | case SHIFT_LSHIFTRT: | |
4478 | info->special = "shll.l\t%S0\n\txor.l\t%S0,%S0\n\trotxl.l\t%S0"; | |
45ca2106 | 4479 | info->cc_special = CC_SET_ZNV; |
dd69e230 KH |
4480 | goto end; |
4481 | case SHIFT_ASHIFTRT: | |
a7612343 | 4482 | info->special = "shll\t%e0\n\tsubx\t%w0,%w0\n\texts.w\t%T0\n\texts.l\t%S0"; |
45ca2106 | 4483 | info->cc_special = CC_SET_ZNV; |
692b7eb3 | 4484 | goto end; |
48837e29 | 4485 | } |
48837e29 DE |
4486 | } |
4487 | } | |
8c440872 | 4488 | gcc_unreachable (); |
51c0c1d7 | 4489 | |
48837e29 | 4490 | default: |
8c440872 | 4491 | gcc_unreachable (); |
07aae5c2 | 4492 | } |
48837e29 | 4493 | |
cb33eb17 KH |
4494 | end: |
4495 | if (!TARGET_H8300S) | |
4496 | info->shift2 = NULL; | |
07aae5c2 SC |
4497 | } |
4498 | ||
be1e06df KH |
4499 | /* Given COUNT and MODE of a shift, return 1 if a scratch reg may be |
4500 | needed for some shift with COUNT and MODE. Return 0 otherwise. */ | |
4501 | ||
4502 | int | |
cb713a8d | 4503 | h8300_shift_needs_scratch_p (int count, enum machine_mode mode) |
be1e06df | 4504 | { |
b9b575e6 | 4505 | enum h8_cpu cpu; |
be1e06df KH |
4506 | int a, lr, ar; |
4507 | ||
4508 | if (GET_MODE_BITSIZE (mode) <= count) | |
4509 | return 1; | |
4510 | ||
4511 | /* Find out the target CPU. */ | |
4512 | if (TARGET_H8300) | |
b9b575e6 | 4513 | cpu = H8_300; |
be1e06df | 4514 | else if (TARGET_H8300H) |
b9b575e6 | 4515 | cpu = H8_300H; |
be1e06df | 4516 | else |
b9b575e6 | 4517 | cpu = H8_S; |
be1e06df KH |
4518 | |
4519 | /* Find the shift algorithm. */ | |
4520 | switch (mode) | |
4521 | { | |
4522 | case QImode: | |
4523 | a = shift_alg_qi[cpu][SHIFT_ASHIFT][count]; | |
4524 | lr = shift_alg_qi[cpu][SHIFT_LSHIFTRT][count]; | |
4525 | ar = shift_alg_qi[cpu][SHIFT_ASHIFTRT][count]; | |
4526 | break; | |
4527 | ||
4528 | case HImode: | |
4529 | a = shift_alg_hi[cpu][SHIFT_ASHIFT][count]; | |
4530 | lr = shift_alg_hi[cpu][SHIFT_LSHIFTRT][count]; | |
4531 | ar = shift_alg_hi[cpu][SHIFT_ASHIFTRT][count]; | |
4532 | break; | |
4533 | ||
4534 | case SImode: | |
4535 | a = shift_alg_si[cpu][SHIFT_ASHIFT][count]; | |
4536 | lr = shift_alg_si[cpu][SHIFT_LSHIFTRT][count]; | |
4537 | ar = shift_alg_si[cpu][SHIFT_ASHIFTRT][count]; | |
4538 | break; | |
4539 | ||
4540 | default: | |
8c440872 | 4541 | gcc_unreachable (); |
be1e06df KH |
4542 | } |
4543 | ||
aa2fb4dd | 4544 | /* On H8/300H, count == 8 uses a scratch register. */ |
be1e06df | 4545 | return (a == SHIFT_LOOP || lr == SHIFT_LOOP || ar == SHIFT_LOOP |
75a3503b | 4546 | || (TARGET_H8300H && mode == SImode && count == 8)); |
be1e06df KH |
4547 | } |
4548 | ||
e9eba255 | 4549 | /* Output the assembler code for doing shifts. */ |
48837e29 | 4550 | |
441d04c6 | 4551 | const char * |
cb713a8d | 4552 | output_a_shift (rtx *operands) |
07aae5c2 | 4553 | { |
48837e29 | 4554 | static int loopend_lab; |
48837e29 DE |
4555 | rtx shift = operands[3]; |
4556 | enum machine_mode mode = GET_MODE (shift); | |
4557 | enum rtx_code code = GET_CODE (shift); | |
4558 | enum shift_type shift_type; | |
4559 | enum shift_mode shift_mode; | |
35fb3d1f | 4560 | struct shift_info info; |
8c440872 | 4561 | int n; |
48837e29 DE |
4562 | |
4563 | loopend_lab++; | |
4564 | ||
4565 | switch (mode) | |
4566 | { | |
4567 | case QImode: | |
4568 | shift_mode = QIshift; | |
4569 | break; | |
4570 | case HImode: | |
4571 | shift_mode = HIshift; | |
4572 | break; | |
4573 | case SImode: | |
4574 | shift_mode = SIshift; | |
4575 | break; | |
4576 | default: | |
8c440872 | 4577 | gcc_unreachable (); |
48837e29 | 4578 | } |
07aae5c2 | 4579 | |
48837e29 | 4580 | switch (code) |
07aae5c2 | 4581 | { |
48837e29 DE |
4582 | case ASHIFTRT: |
4583 | shift_type = SHIFT_ASHIFTRT; | |
4584 | break; | |
4585 | case LSHIFTRT: | |
4586 | shift_type = SHIFT_LSHIFTRT; | |
4587 | break; | |
4588 | case ASHIFT: | |
4589 | shift_type = SHIFT_ASHIFT; | |
4590 | break; | |
4591 | default: | |
8c440872 | 4592 | gcc_unreachable (); |
48837e29 | 4593 | } |
07aae5c2 | 4594 | |
8c440872 NS |
4595 | /* This case must be taken care of by one of the two splitters |
4596 | that convert a variable shift into a loop. */ | |
4597 | gcc_assert (GET_CODE (operands[2]) == CONST_INT); | |
4598 | ||
4599 | n = INTVAL (operands[2]); | |
4600 | ||
4601 | /* If the count is negative, make it 0. */ | |
4602 | if (n < 0) | |
4603 | n = 0; | |
4604 | /* If the count is too big, truncate it. | |
4605 | ANSI says shifts of GET_MODE_BITSIZE are undefined - we choose to | |
4606 | do the intuitive thing. */ | |
4607 | else if ((unsigned int) n > GET_MODE_BITSIZE (mode)) | |
4608 | n = GET_MODE_BITSIZE (mode); | |
4609 | ||
4610 | get_shift_alg (shift_type, shift_mode, n, &info); | |
4611 | ||
4612 | switch (info.alg) | |
48837e29 | 4613 | { |
8c440872 NS |
4614 | case SHIFT_SPECIAL: |
4615 | output_asm_insn (info.special, operands); | |
4616 | /* Fall through. */ | |
48837e29 | 4617 | |
8c440872 NS |
4618 | case SHIFT_INLINE: |
4619 | n = info.remainder; | |
48837e29 | 4620 | |
8c440872 NS |
4621 | /* Emit two bit shifts first. */ |
4622 | if (info.shift2 != NULL) | |
48837e29 | 4623 | { |
8c440872 NS |
4624 | for (; n > 1; n -= 2) |
4625 | output_asm_insn (info.shift2, operands); | |
4626 | } | |
51c0c1d7 | 4627 | |
8c440872 NS |
4628 | /* Now emit one bit shifts for any residual. */ |
4629 | for (; n > 0; n--) | |
4630 | output_asm_insn (info.shift1, operands); | |
4631 | return ""; | |
4632 | ||
4633 | case SHIFT_ROT_AND: | |
4634 | { | |
4635 | int m = GET_MODE_BITSIZE (mode) - n; | |
4636 | const int mask = (shift_type == SHIFT_ASHIFT | |
4637 | ? ((1 << m) - 1) << n | |
4638 | : (1 << m) - 1); | |
4639 | char insn_buf[200]; | |
4640 | ||
4641 | /* Not all possibilities of rotate are supported. They shouldn't | |
4642 | be generated, but let's watch for 'em. */ | |
4643 | gcc_assert (info.shift1); | |
4644 | ||
4645 | /* Emit two bit rotates first. */ | |
4646 | if (info.shift2 != NULL) | |
48837e29 | 4647 | { |
8c440872 NS |
4648 | for (; m > 1; m -= 2) |
4649 | output_asm_insn (info.shift2, operands); | |
4650 | } | |
4651 | ||
4652 | /* Now single bit rotates for any residual. */ | |
4653 | for (; m > 0; m--) | |
4654 | output_asm_insn (info.shift1, operands); | |
4655 | ||
4656 | /* Now mask off the high bits. */ | |
4657 | switch (mode) | |
4658 | { | |
4659 | case QImode: | |
4660 | sprintf (insn_buf, "and\t#%d,%%X0", mask); | |
4661 | break; | |
51c0c1d7 | 4662 | |
8c440872 NS |
4663 | case HImode: |
4664 | gcc_assert (TARGET_H8300H || TARGET_H8300S); | |
4665 | sprintf (insn_buf, "and.w\t#%d,%%T0", mask); | |
4666 | break; | |
51c0c1d7 | 4667 | |
8c440872 NS |
4668 | default: |
4669 | gcc_unreachable (); | |
48837e29 | 4670 | } |
b5eaf9ba | 4671 | |
8c440872 NS |
4672 | output_asm_insn (insn_buf, operands); |
4673 | return ""; | |
4674 | } | |
b5eaf9ba | 4675 | |
8c440872 NS |
4676 | case SHIFT_LOOP: |
4677 | /* A loop to shift by a "large" constant value. | |
4678 | If we have shift-by-2 insns, use them. */ | |
4679 | if (info.shift2 != NULL) | |
4680 | { | |
4681 | fprintf (asm_out_file, "\tmov.b #%d,%sl\n", n / 2, | |
4682 | names_big[REGNO (operands[4])]); | |
4683 | fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); | |
4684 | output_asm_insn (info.shift2, operands); | |
4685 | output_asm_insn ("add #0xff,%X4", operands); | |
4686 | fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); | |
4687 | if (n % 2) | |
4688 | output_asm_insn (info.shift1, operands); | |
4689 | } | |
4690 | else | |
4691 | { | |
4692 | fprintf (asm_out_file, "\tmov.b #%d,%sl\n", n, | |
4693 | names_big[REGNO (operands[4])]); | |
4694 | fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); | |
4695 | output_asm_insn (info.shift1, operands); | |
4696 | output_asm_insn ("add #0xff,%X4", operands); | |
4697 | fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); | |
51c0c1d7 | 4698 | } |
8c440872 NS |
4699 | return ""; |
4700 | ||
4701 | default: | |
4702 | gcc_unreachable (); | |
07aae5c2 | 4703 | } |
07aae5c2 | 4704 | } |
86855e8c | 4705 | |
0a2aaacc | 4706 | /* Count the number of assembly instructions in a string TEMPL. */ |
e9eba255 | 4707 | |
86855e8c | 4708 | static unsigned int |
0a2aaacc | 4709 | h8300_asm_insn_count (const char *templ) |
86855e8c KH |
4710 | { |
4711 | unsigned int count = 1; | |
4712 | ||
0a2aaacc KG |
4713 | for (; *templ; templ++) |
4714 | if (*templ == '\n') | |
86855e8c KH |
4715 | count++; |
4716 | ||
4717 | return count; | |
4718 | } | |
4719 | ||
e9eba255 KH |
4720 | /* Compute the length of a shift insn. */ |
4721 | ||
86855e8c | 4722 | unsigned int |
cb713a8d | 4723 | compute_a_shift_length (rtx insn ATTRIBUTE_UNUSED, rtx *operands) |
86855e8c KH |
4724 | { |
4725 | rtx shift = operands[3]; | |
4726 | enum machine_mode mode = GET_MODE (shift); | |
4727 | enum rtx_code code = GET_CODE (shift); | |
4728 | enum shift_type shift_type; | |
4729 | enum shift_mode shift_mode; | |
4730 | struct shift_info info; | |
4731 | unsigned int wlength = 0; | |
4732 | ||
4733 | switch (mode) | |
4734 | { | |
4735 | case QImode: | |
4736 | shift_mode = QIshift; | |
4737 | break; | |
4738 | case HImode: | |
4739 | shift_mode = HIshift; | |
4740 | break; | |
4741 | case SImode: | |
4742 | shift_mode = SIshift; | |
4743 | break; | |
4744 | default: | |
8c440872 | 4745 | gcc_unreachable (); |
86855e8c KH |
4746 | } |
4747 | ||
4748 | switch (code) | |
4749 | { | |
4750 | case ASHIFTRT: | |
4751 | shift_type = SHIFT_ASHIFTRT; | |
4752 | break; | |
4753 | case LSHIFTRT: | |
4754 | shift_type = SHIFT_LSHIFTRT; | |
4755 | break; | |
4756 | case ASHIFT: | |
4757 | shift_type = SHIFT_ASHIFT; | |
4758 | break; | |
4759 | default: | |
8c440872 | 4760 | gcc_unreachable (); |
86855e8c KH |
4761 | } |
4762 | ||
4763 | if (GET_CODE (operands[2]) != CONST_INT) | |
4764 | { | |
4765 | /* Get the assembler code to do one shift. */ | |
4766 | get_shift_alg (shift_type, shift_mode, 1, &info); | |
4767 | ||
4768 | return (4 + h8300_asm_insn_count (info.shift1)) * 2; | |
4769 | } | |
4770 | else | |
4771 | { | |
4772 | int n = INTVAL (operands[2]); | |
4773 | ||
4774 | /* If the count is negative, make it 0. */ | |
4775 | if (n < 0) | |
4776 | n = 0; | |
4777 | /* If the count is too big, truncate it. | |
4778 | ANSI says shifts of GET_MODE_BITSIZE are undefined - we choose to | |
4779 | do the intuitive thing. */ | |
4780 | else if ((unsigned int) n > GET_MODE_BITSIZE (mode)) | |
4781 | n = GET_MODE_BITSIZE (mode); | |
4782 | ||
4783 | get_shift_alg (shift_type, shift_mode, n, &info); | |
4784 | ||
4785 | switch (info.alg) | |
4786 | { | |
4787 | case SHIFT_SPECIAL: | |
4788 | wlength += h8300_asm_insn_count (info.special); | |
41c3eb5d KH |
4789 | |
4790 | /* Every assembly instruction used in SHIFT_SPECIAL case | |
4791 | takes 2 bytes except xor.l, which takes 4 bytes, so if we | |
4792 | see xor.l, we just pretend that xor.l counts as two insns | |
4793 | so that the insn length will be computed correctly. */ | |
4794 | if (strstr (info.special, "xor.l") != NULL) | |
4795 | wlength++; | |
4796 | ||
86855e8c KH |
4797 | /* Fall through. */ |
4798 | ||
4799 | case SHIFT_INLINE: | |
4800 | n = info.remainder; | |
4801 | ||
4802 | if (info.shift2 != NULL) | |
4803 | { | |
4804 | wlength += h8300_asm_insn_count (info.shift2) * (n / 2); | |
4805 | n = n % 2; | |
4806 | } | |
4807 | ||
4808 | wlength += h8300_asm_insn_count (info.shift1) * n; | |
6b148bd9 | 4809 | |
86855e8c KH |
4810 | return 2 * wlength; |
4811 | ||
4812 | case SHIFT_ROT_AND: | |
4813 | { | |
4814 | int m = GET_MODE_BITSIZE (mode) - n; | |
4815 | ||
4816 | /* Not all possibilities of rotate are supported. They shouldn't | |
4817 | be generated, but let's watch for 'em. */ | |
8c440872 | 4818 | gcc_assert (info.shift1); |
86855e8c KH |
4819 | |
4820 | if (info.shift2 != NULL) | |
4821 | { | |
4822 | wlength += h8300_asm_insn_count (info.shift2) * (m / 2); | |
4823 | m = m % 2; | |
4824 | } | |
4825 | ||
4826 | wlength += h8300_asm_insn_count (info.shift1) * m; | |
6b148bd9 | 4827 | |
86855e8c KH |
4828 | /* Now mask off the high bits. */ |
4829 | switch (mode) | |
4830 | { | |
4831 | case QImode: | |
4832 | wlength += 1; | |
4833 | break; | |
4834 | case HImode: | |
4835 | wlength += 2; | |
4836 | break; | |
4837 | case SImode: | |
8c440872 | 4838 | gcc_assert (!TARGET_H8300); |
86855e8c KH |
4839 | wlength += 3; |
4840 | break; | |
4841 | default: | |
8c440872 | 4842 | gcc_unreachable (); |
86855e8c KH |
4843 | } |
4844 | return 2 * wlength; | |
4845 | } | |
4846 | ||
4847 | case SHIFT_LOOP: | |
4848 | /* A loop to shift by a "large" constant value. | |
4849 | If we have shift-by-2 insns, use them. */ | |
4850 | if (info.shift2 != NULL) | |
4851 | { | |
4852 | wlength += 3 + h8300_asm_insn_count (info.shift2); | |
4853 | if (n % 2) | |
4854 | wlength += h8300_asm_insn_count (info.shift1); | |
4855 | } | |
4856 | else | |
4857 | { | |
4858 | wlength += 3 + h8300_asm_insn_count (info.shift1); | |
4859 | } | |
4860 | return 2 * wlength; | |
4861 | ||
4862 | default: | |
8c440872 | 4863 | gcc_unreachable (); |
86855e8c KH |
4864 | } |
4865 | } | |
4866 | } | |
45ca2106 | 4867 | |
e9eba255 KH |
4868 | /* Compute which flag bits are valid after a shift insn. */ |
4869 | ||
9690aa8e | 4870 | enum attr_cc |
cb713a8d | 4871 | compute_a_shift_cc (rtx insn ATTRIBUTE_UNUSED, rtx *operands) |
45ca2106 KH |
4872 | { |
4873 | rtx shift = operands[3]; | |
4874 | enum machine_mode mode = GET_MODE (shift); | |
4875 | enum rtx_code code = GET_CODE (shift); | |
4876 | enum shift_type shift_type; | |
4877 | enum shift_mode shift_mode; | |
4878 | struct shift_info info; | |
8c440872 NS |
4879 | int n; |
4880 | ||
45ca2106 KH |
4881 | switch (mode) |
4882 | { | |
4883 | case QImode: | |
4884 | shift_mode = QIshift; | |
4885 | break; | |
4886 | case HImode: | |
4887 | shift_mode = HIshift; | |
4888 | break; | |
4889 | case SImode: | |
4890 | shift_mode = SIshift; | |
4891 | break; | |
4892 | default: | |
8c440872 | 4893 | gcc_unreachable (); |
45ca2106 KH |
4894 | } |
4895 | ||
4896 | switch (code) | |
4897 | { | |
4898 | case ASHIFTRT: | |
4899 | shift_type = SHIFT_ASHIFTRT; | |
4900 | break; | |
4901 | case LSHIFTRT: | |
4902 | shift_type = SHIFT_LSHIFTRT; | |
4903 | break; | |
4904 | case ASHIFT: | |
4905 | shift_type = SHIFT_ASHIFT; | |
4906 | break; | |
4907 | default: | |
8c440872 | 4908 | gcc_unreachable (); |
45ca2106 KH |
4909 | } |
4910 | ||
8c440872 NS |
4911 | /* This case must be taken care of by one of the two splitters |
4912 | that convert a variable shift into a loop. */ | |
4913 | gcc_assert (GET_CODE (operands[2]) == CONST_INT); | |
4914 | ||
4915 | n = INTVAL (operands[2]); | |
4916 | ||
4917 | /* If the count is negative, make it 0. */ | |
4918 | if (n < 0) | |
4919 | n = 0; | |
4920 | /* If the count is too big, truncate it. | |
4921 | ANSI says shifts of GET_MODE_BITSIZE are undefined - we choose to | |
4922 | do the intuitive thing. */ | |
4923 | else if ((unsigned int) n > GET_MODE_BITSIZE (mode)) | |
4924 | n = GET_MODE_BITSIZE (mode); | |
4925 | ||
4926 | get_shift_alg (shift_type, shift_mode, n, &info); | |
4927 | ||
4928 | switch (info.alg) | |
45ca2106 | 4929 | { |
8c440872 NS |
4930 | case SHIFT_SPECIAL: |
4931 | if (info.remainder == 0) | |
4932 | return info.cc_special; | |
45ca2106 | 4933 | |
8c440872 | 4934 | /* Fall through. */ |
45ca2106 | 4935 | |
8c440872 NS |
4936 | case SHIFT_INLINE: |
4937 | return info.cc_inline; | |
4938 | ||
4939 | case SHIFT_ROT_AND: | |
4940 | /* This case always ends with an and instruction. */ | |
4941 | return CC_SET_ZNV; | |
4942 | ||
4943 | case SHIFT_LOOP: | |
4944 | /* A loop to shift by a "large" constant value. | |
4945 | If we have shift-by-2 insns, use them. */ | |
4946 | if (info.shift2 != NULL) | |
45ca2106 | 4947 | { |
8c440872 NS |
4948 | if (n % 2) |
4949 | return info.cc_inline; | |
45ca2106 | 4950 | } |
8c440872 NS |
4951 | return CC_CLOBBER; |
4952 | ||
4953 | default: | |
4954 | gcc_unreachable (); | |
45ca2106 KH |
4955 | } |
4956 | } | |
48837e29 | 4957 | \f |
edd71f0f KH |
4958 | /* A rotation by a non-constant will cause a loop to be generated, in |
4959 | which a rotation by one bit is used. A rotation by a constant, | |
4960 | including the one in the loop, will be taken care of by | |
caf7f21a | 4961 | output_a_rotate () at the insn emit time. */ |
edd71f0f KH |
4962 | |
4963 | int | |
3d2e90d6 | 4964 | expand_a_rotate (rtx operands[]) |
edd71f0f KH |
4965 | { |
4966 | rtx dst = operands[0]; | |
4967 | rtx src = operands[1]; | |
4968 | rtx rotate_amount = operands[2]; | |
4969 | enum machine_mode mode = GET_MODE (dst); | |
edd71f0f | 4970 | |
beed8fc0 AO |
4971 | if (h8sx_classify_shift (mode, ROTATE, rotate_amount) == H8SX_SHIFT_UNARY) |
4972 | return false; | |
4973 | ||
edd71f0f KH |
4974 | /* We rotate in place. */ |
4975 | emit_move_insn (dst, src); | |
4976 | ||
4977 | if (GET_CODE (rotate_amount) != CONST_INT) | |
4978 | { | |
4979 | rtx counter = gen_reg_rtx (QImode); | |
4980 | rtx start_label = gen_label_rtx (); | |
4981 | rtx end_label = gen_label_rtx (); | |
4982 | ||
4983 | /* If the rotate amount is less than or equal to 0, | |
4984 | we go out of the loop. */ | |
a556fd39 | 4985 | emit_cmp_and_jump_insns (rotate_amount, const0_rtx, LE, NULL_RTX, |
d43e0b7d | 4986 | QImode, 0, end_label); |
edd71f0f KH |
4987 | |
4988 | /* Initialize the loop counter. */ | |
4989 | emit_move_insn (counter, rotate_amount); | |
4990 | ||
4991 | emit_label (start_label); | |
4992 | ||
4993 | /* Rotate by one bit. */ | |
01ab5574 KH |
4994 | switch (mode) |
4995 | { | |
4996 | case QImode: | |
4997 | emit_insn (gen_rotlqi3_1 (dst, dst, const1_rtx)); | |
4998 | break; | |
4999 | case HImode: | |
5000 | emit_insn (gen_rotlhi3_1 (dst, dst, const1_rtx)); | |
5001 | break; | |
5002 | case SImode: | |
5003 | emit_insn (gen_rotlsi3_1 (dst, dst, const1_rtx)); | |
5004 | break; | |
5005 | default: | |
8c440872 | 5006 | gcc_unreachable (); |
01ab5574 | 5007 | } |
edd71f0f KH |
5008 | |
5009 | /* Decrement the counter by 1. */ | |
01ab5574 | 5010 | emit_insn (gen_addqi3 (counter, counter, constm1_rtx)); |
edd71f0f | 5011 | |
9cd10576 | 5012 | /* If the loop counter is nonzero, we go back to the beginning |
edd71f0f | 5013 | of the loop. */ |
a556fd39 | 5014 | emit_cmp_and_jump_insns (counter, const0_rtx, NE, NULL_RTX, QImode, 1, |
d43e0b7d | 5015 | start_label); |
edd71f0f KH |
5016 | |
5017 | emit_label (end_label); | |
5018 | } | |
5019 | else | |
5020 | { | |
5021 | /* Rotate by AMOUNT bits. */ | |
01ab5574 KH |
5022 | switch (mode) |
5023 | { | |
5024 | case QImode: | |
5025 | emit_insn (gen_rotlqi3_1 (dst, dst, rotate_amount)); | |
5026 | break; | |
5027 | case HImode: | |
5028 | emit_insn (gen_rotlhi3_1 (dst, dst, rotate_amount)); | |
5029 | break; | |
5030 | case SImode: | |
5031 | emit_insn (gen_rotlsi3_1 (dst, dst, rotate_amount)); | |
5032 | break; | |
5033 | default: | |
8c440872 | 5034 | gcc_unreachable (); |
01ab5574 | 5035 | } |
edd71f0f KH |
5036 | } |
5037 | ||
5038 | return 1; | |
5039 | } | |
5040 | ||
e9eba255 | 5041 | /* Output a rotate insn. */ |
edd71f0f KH |
5042 | |
5043 | const char * | |
caf7f21a | 5044 | output_a_rotate (enum rtx_code code, rtx *operands) |
edd71f0f KH |
5045 | { |
5046 | rtx dst = operands[0]; | |
5047 | rtx rotate_amount = operands[2]; | |
5048 | enum shift_mode rotate_mode; | |
5049 | enum shift_type rotate_type; | |
5050 | const char *insn_buf; | |
5051 | int bits; | |
5052 | int amount; | |
5053 | enum machine_mode mode = GET_MODE (dst); | |
5054 | ||
8c440872 | 5055 | gcc_assert (GET_CODE (rotate_amount) == CONST_INT); |
edd71f0f KH |
5056 | |
5057 | switch (mode) | |
5058 | { | |
5059 | case QImode: | |
5060 | rotate_mode = QIshift; | |
5061 | break; | |
5062 | case HImode: | |
5063 | rotate_mode = HIshift; | |
5064 | break; | |
5065 | case SImode: | |
5066 | rotate_mode = SIshift; | |
5067 | break; | |
5068 | default: | |
8c440872 | 5069 | gcc_unreachable (); |
edd71f0f KH |
5070 | } |
5071 | ||
5072 | switch (code) | |
5073 | { | |
5074 | case ROTATERT: | |
5075 | rotate_type = SHIFT_ASHIFT; | |
5076 | break; | |
5077 | case ROTATE: | |
5078 | rotate_type = SHIFT_LSHIFTRT; | |
5079 | break; | |
5080 | default: | |
8c440872 | 5081 | gcc_unreachable (); |
edd71f0f KH |
5082 | } |
5083 | ||
5084 | amount = INTVAL (rotate_amount); | |
5085 | ||
5086 | /* Clean up AMOUNT. */ | |
5087 | if (amount < 0) | |
5088 | amount = 0; | |
5089 | if ((unsigned int) amount > GET_MODE_BITSIZE (mode)) | |
5090 | amount = GET_MODE_BITSIZE (mode); | |
5091 | ||
5092 | /* Determine the faster direction. After this phase, amount will be | |
5093 | at most a half of GET_MODE_BITSIZE (mode). */ | |
e0c32c62 | 5094 | if ((unsigned int) amount > GET_MODE_BITSIZE (mode) / (unsigned) 2) |
edd71f0f KH |
5095 | { |
5096 | /* Flip the direction. */ | |
5097 | amount = GET_MODE_BITSIZE (mode) - amount; | |
5098 | rotate_type = | |
5099 | (rotate_type == SHIFT_ASHIFT) ? SHIFT_LSHIFTRT : SHIFT_ASHIFT; | |
5100 | } | |
5101 | ||
5102 | /* See if a byte swap (in HImode) or a word swap (in SImode) can | |
5103 | boost up the rotation. */ | |
5104 | if ((mode == HImode && TARGET_H8300 && amount >= 5) | |
5105 | || (mode == HImode && TARGET_H8300H && amount >= 6) | |
5106 | || (mode == HImode && TARGET_H8300S && amount == 8) | |
5107 | || (mode == SImode && TARGET_H8300H && amount >= 10) | |
5108 | || (mode == SImode && TARGET_H8300S && amount >= 13)) | |
5109 | { | |
5110 | switch (mode) | |
5111 | { | |
5112 | case HImode: | |
5113 | /* This code works on any family. */ | |
5114 | insn_buf = "xor.b\t%s0,%t0\n\txor.b\t%t0,%s0\n\txor.b\t%s0,%t0"; | |
5115 | output_asm_insn (insn_buf, operands); | |
5116 | break; | |
5117 | ||
5118 | case SImode: | |
3db11b5c | 5119 | /* This code works on the H8/300H and H8S. */ |
edd71f0f KH |
5120 | insn_buf = "xor.w\t%e0,%f0\n\txor.w\t%f0,%e0\n\txor.w\t%e0,%f0"; |
5121 | output_asm_insn (insn_buf, operands); | |
5122 | break; | |
5123 | ||
5124 | default: | |
8c440872 | 5125 | gcc_unreachable (); |
edd71f0f KH |
5126 | } |
5127 | ||
5128 | /* Adjust AMOUNT and flip the direction. */ | |
5129 | amount = GET_MODE_BITSIZE (mode) / 2 - amount; | |
5130 | rotate_type = | |
5131 | (rotate_type == SHIFT_ASHIFT) ? SHIFT_LSHIFTRT : SHIFT_ASHIFT; | |
5132 | } | |
5133 | ||
01ab5574 | 5134 | /* Output rotate insns. */ |
edd71f0f KH |
5135 | for (bits = TARGET_H8300S ? 2 : 1; bits > 0; bits /= 2) |
5136 | { | |
5137 | if (bits == 2) | |
5138 | insn_buf = rotate_two[rotate_type][rotate_mode]; | |
5139 | else | |
5140 | insn_buf = rotate_one[cpu_type][rotate_type][rotate_mode]; | |
2c54abce | 5141 | |
edd71f0f KH |
5142 | for (; amount >= bits; amount -= bits) |
5143 | output_asm_insn (insn_buf, operands); | |
5144 | } | |
5145 | ||
5146 | return ""; | |
5147 | } | |
caf7f21a | 5148 | |
e9eba255 KH |
5149 | /* Compute the length of a rotate insn. */ |
5150 | ||
caf7f21a KH |
5151 | unsigned int |
5152 | compute_a_rotate_length (rtx *operands) | |
5153 | { | |
5154 | rtx src = operands[1]; | |
343fd2c7 | 5155 | rtx amount_rtx = operands[2]; |
caf7f21a KH |
5156 | enum machine_mode mode = GET_MODE (src); |
5157 | int amount; | |
5158 | unsigned int length = 0; | |
5159 | ||
8c440872 | 5160 | gcc_assert (GET_CODE (amount_rtx) == CONST_INT); |
caf7f21a | 5161 | |
343fd2c7 | 5162 | amount = INTVAL (amount_rtx); |
caf7f21a KH |
5163 | |
5164 | /* Clean up AMOUNT. */ | |
5165 | if (amount < 0) | |
5166 | amount = 0; | |
5167 | if ((unsigned int) amount > GET_MODE_BITSIZE (mode)) | |
5168 | amount = GET_MODE_BITSIZE (mode); | |
5169 | ||
5170 | /* Determine the faster direction. After this phase, amount | |
5171 | will be at most a half of GET_MODE_BITSIZE (mode). */ | |
5172 | if ((unsigned int) amount > GET_MODE_BITSIZE (mode) / (unsigned) 2) | |
5173 | /* Flip the direction. */ | |
5174 | amount = GET_MODE_BITSIZE (mode) - amount; | |
5175 | ||
5176 | /* See if a byte swap (in HImode) or a word swap (in SImode) can | |
5177 | boost up the rotation. */ | |
5178 | if ((mode == HImode && TARGET_H8300 && amount >= 5) | |
5179 | || (mode == HImode && TARGET_H8300H && amount >= 6) | |
5180 | || (mode == HImode && TARGET_H8300S && amount == 8) | |
5181 | || (mode == SImode && TARGET_H8300H && amount >= 10) | |
5182 | || (mode == SImode && TARGET_H8300S && amount >= 13)) | |
5183 | { | |
5184 | /* Adjust AMOUNT and flip the direction. */ | |
5185 | amount = GET_MODE_BITSIZE (mode) / 2 - amount; | |
5186 | length += 6; | |
5187 | } | |
5188 | ||
5189 | /* We use 2-bit rotations on the H8S. */ | |
5190 | if (TARGET_H8300S) | |
5191 | amount = amount / 2 + amount % 2; | |
5192 | ||
5193 | /* The H8/300 uses three insns to rotate one bit, taking 6 | |
5194 | length. */ | |
5195 | length += amount * ((TARGET_H8300 && mode == HImode) ? 6 : 2); | |
5196 | ||
5197 | return length; | |
5198 | } | |
edd71f0f | 5199 | \f |
48837e29 | 5200 | /* Fix the operands of a gen_xxx so that it could become a bit |
2c54abce | 5201 | operating insn. */ |
07aae5c2 SC |
5202 | |
5203 | int | |
4093985c | 5204 | fix_bit_operand (rtx *operands, enum rtx_code code) |
07aae5c2 | 5205 | { |
abc95ed3 | 5206 | /* The bit_operand predicate accepts any memory during RTL generation, but |
48837e29 DE |
5207 | only 'U' memory afterwards, so if this is a MEM operand, we must force |
5208 | it to be valid for 'U' by reloading the address. */ | |
07aae5c2 | 5209 | |
4093985c KH |
5210 | if (code == AND |
5211 | ? single_zero_operand (operands[2], QImode) | |
5212 | : single_one_operand (operands[2], QImode)) | |
07aae5c2 | 5213 | { |
2e760b15 KH |
5214 | /* OK to have a memory dest. */ |
5215 | if (GET_CODE (operands[0]) == MEM | |
ceaaaeab | 5216 | && !satisfies_constraint_U (operands[0])) |
48837e29 | 5217 | { |
2e760b15 KH |
5218 | rtx mem = gen_rtx_MEM (GET_MODE (operands[0]), |
5219 | copy_to_mode_reg (Pmode, | |
5220 | XEXP (operands[0], 0))); | |
5221 | MEM_COPY_ATTRIBUTES (mem, operands[0]); | |
5222 | operands[0] = mem; | |
5223 | } | |
48837e29 | 5224 | |
2e760b15 | 5225 | if (GET_CODE (operands[1]) == MEM |
ceaaaeab | 5226 | && !satisfies_constraint_U (operands[1])) |
2e760b15 KH |
5227 | { |
5228 | rtx mem = gen_rtx_MEM (GET_MODE (operands[1]), | |
5229 | copy_to_mode_reg (Pmode, | |
5230 | XEXP (operands[1], 0))); | |
5231 | MEM_COPY_ATTRIBUTES (mem, operands[0]); | |
5232 | operands[1] = mem; | |
48837e29 | 5233 | } |
2e760b15 | 5234 | return 0; |
48837e29 | 5235 | } |
07aae5c2 | 5236 | |
48837e29 | 5237 | /* Dest and src op must be register. */ |
07aae5c2 | 5238 | |
48837e29 DE |
5239 | operands[1] = force_reg (QImode, operands[1]); |
5240 | { | |
5241 | rtx res = gen_reg_rtx (QImode); | |
fd57a6e4 | 5242 | switch (code) |
a3579575 KH |
5243 | { |
5244 | case AND: | |
5245 | emit_insn (gen_andqi3_1 (res, operands[1], operands[2])); | |
5246 | break; | |
5247 | case IOR: | |
5248 | emit_insn (gen_iorqi3_1 (res, operands[1], operands[2])); | |
5249 | break; | |
5250 | case XOR: | |
5251 | emit_insn (gen_xorqi3_1 (res, operands[1], operands[2])); | |
5252 | break; | |
5253 | default: | |
8c440872 | 5254 | gcc_unreachable (); |
a3579575 KH |
5255 | } |
5256 | emit_insn (gen_movqi (operands[0], res)); | |
48837e29 DE |
5257 | } |
5258 | return 1; | |
07aae5c2 | 5259 | } |
f5b65a56 | 5260 | |
f5b65a56 JL |
5261 | /* Return nonzero if FUNC is an interrupt function as specified |
5262 | by the "interrupt" attribute. */ | |
5263 | ||
5264 | static int | |
cb713a8d | 5265 | h8300_interrupt_function_p (tree func) |
f5b65a56 JL |
5266 | { |
5267 | tree a; | |
5268 | ||
5269 | if (TREE_CODE (func) != FUNCTION_DECL) | |
5270 | return 0; | |
5271 | ||
91d231cb | 5272 | a = lookup_attribute ("interrupt_handler", DECL_ATTRIBUTES (func)); |
f5b65a56 JL |
5273 | return a != NULL_TREE; |
5274 | } | |
5275 | ||
3cfa3702 KH |
5276 | /* Return nonzero if FUNC is a saveall function as specified by the |
5277 | "saveall" attribute. */ | |
5278 | ||
5279 | static int | |
5280 | h8300_saveall_function_p (tree func) | |
5281 | { | |
5282 | tree a; | |
5283 | ||
5284 | if (TREE_CODE (func) != FUNCTION_DECL) | |
5285 | return 0; | |
5286 | ||
5287 | a = lookup_attribute ("saveall", DECL_ATTRIBUTES (func)); | |
5288 | return a != NULL_TREE; | |
5289 | } | |
5290 | ||
fabe72bb JL |
5291 | /* Return nonzero if FUNC is an OS_Task function as specified |
5292 | by the "OS_Task" attribute. */ | |
5293 | ||
5294 | static int | |
cb713a8d | 5295 | h8300_os_task_function_p (tree func) |
fabe72bb JL |
5296 | { |
5297 | tree a; | |
5298 | ||
5299 | if (TREE_CODE (func) != FUNCTION_DECL) | |
5300 | return 0; | |
5301 | ||
91d231cb | 5302 | a = lookup_attribute ("OS_Task", DECL_ATTRIBUTES (func)); |
fabe72bb JL |
5303 | return a != NULL_TREE; |
5304 | } | |
5305 | ||
5306 | /* Return nonzero if FUNC is a monitor function as specified | |
5307 | by the "monitor" attribute. */ | |
5308 | ||
5309 | static int | |
cb713a8d | 5310 | h8300_monitor_function_p (tree func) |
fabe72bb JL |
5311 | { |
5312 | tree a; | |
5313 | ||
5314 | if (TREE_CODE (func) != FUNCTION_DECL) | |
5315 | return 0; | |
5316 | ||
91d231cb | 5317 | a = lookup_attribute ("monitor", DECL_ATTRIBUTES (func)); |
fabe72bb JL |
5318 | return a != NULL_TREE; |
5319 | } | |
5320 | ||
f5b65a56 JL |
5321 | /* Return nonzero if FUNC is a function that should be called |
5322 | through the function vector. */ | |
5323 | ||
5324 | int | |
cb713a8d | 5325 | h8300_funcvec_function_p (tree func) |
f5b65a56 JL |
5326 | { |
5327 | tree a; | |
5328 | ||
5329 | if (TREE_CODE (func) != FUNCTION_DECL) | |
5330 | return 0; | |
5331 | ||
91d231cb | 5332 | a = lookup_attribute ("function_vector", DECL_ATTRIBUTES (func)); |
f5b65a56 JL |
5333 | return a != NULL_TREE; |
5334 | } | |
5335 | ||
887a8bd9 | 5336 | /* Return nonzero if DECL is a variable that's in the eight bit |
15dc331e JL |
5337 | data area. */ |
5338 | ||
5339 | int | |
cb713a8d | 5340 | h8300_eightbit_data_p (tree decl) |
15dc331e JL |
5341 | { |
5342 | tree a; | |
5343 | ||
5344 | if (TREE_CODE (decl) != VAR_DECL) | |
5345 | return 0; | |
5346 | ||
91d231cb | 5347 | a = lookup_attribute ("eightbit_data", DECL_ATTRIBUTES (decl)); |
15dc331e JL |
5348 | return a != NULL_TREE; |
5349 | } | |
5350 | ||
887a8bd9 JL |
5351 | /* Return nonzero if DECL is a variable that's in the tiny |
5352 | data area. */ | |
5353 | ||
5354 | int | |
cb713a8d | 5355 | h8300_tiny_data_p (tree decl) |
887a8bd9 JL |
5356 | { |
5357 | tree a; | |
5358 | ||
5359 | if (TREE_CODE (decl) != VAR_DECL) | |
5360 | return 0; | |
5361 | ||
91d231cb | 5362 | a = lookup_attribute ("tiny_data", DECL_ATTRIBUTES (decl)); |
887a8bd9 JL |
5363 | return a != NULL_TREE; |
5364 | } | |
5365 | ||
3cfa3702 KH |
5366 | /* Generate an 'interrupt_handler' attribute for decls. We convert |
5367 | all the pragmas to corresponding attributes. */ | |
2c1d2fcb DD |
5368 | |
5369 | static void | |
cb713a8d | 5370 | h8300_insert_attributes (tree node, tree *attributes) |
2c1d2fcb | 5371 | { |
3cfa3702 KH |
5372 | if (TREE_CODE (node) == FUNCTION_DECL) |
5373 | { | |
5374 | if (pragma_interrupt) | |
5375 | { | |
5376 | pragma_interrupt = 0; | |
2c1d2fcb | 5377 | |
3cfa3702 KH |
5378 | /* Add an 'interrupt_handler' attribute. */ |
5379 | *attributes = tree_cons (get_identifier ("interrupt_handler"), | |
5380 | NULL, *attributes); | |
5381 | } | |
e392d367 | 5382 | |
3cfa3702 KH |
5383 | if (pragma_saveall) |
5384 | { | |
5385 | pragma_saveall = 0; | |
5386 | ||
5387 | /* Add an 'saveall' attribute. */ | |
5388 | *attributes = tree_cons (get_identifier ("saveall"), | |
5389 | NULL, *attributes); | |
5390 | } | |
5391 | } | |
2c1d2fcb DD |
5392 | } |
5393 | ||
91d231cb | 5394 | /* Supported attributes: |
f5b65a56 | 5395 | |
97c5ec1d | 5396 | interrupt_handler: output a prologue and epilogue suitable for an |
f5b65a56 JL |
5397 | interrupt handler. |
5398 | ||
3cfa3702 KH |
5399 | saveall: output a prologue and epilogue that saves and restores |
5400 | all registers except the stack pointer. | |
5401 | ||
97c5ec1d | 5402 | function_vector: This function should be called through the |
887a8bd9 JL |
5403 | function vector. |
5404 | ||
5405 | eightbit_data: This variable lives in the 8-bit data area and can | |
5406 | be referenced with 8-bit absolute memory addresses. | |
5407 | ||
5408 | tiny_data: This variable lives in the tiny data area and can be | |
5409 | referenced with 16-bit absolute memory references. */ | |
f5b65a56 | 5410 | |
6bc7bc14 | 5411 | static const struct attribute_spec h8300_attribute_table[] = |
f5b65a56 | 5412 | { |
62d784f7 KT |
5413 | /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler, |
5414 | affects_type_identity } */ | |
5415 | { "interrupt_handler", 0, 0, true, false, false, | |
5416 | h8300_handle_fndecl_attribute, false }, | |
5417 | { "saveall", 0, 0, true, false, false, | |
5418 | h8300_handle_fndecl_attribute, false }, | |
5419 | { "OS_Task", 0, 0, true, false, false, | |
5420 | h8300_handle_fndecl_attribute, false }, | |
5421 | { "monitor", 0, 0, true, false, false, | |
5422 | h8300_handle_fndecl_attribute, false }, | |
5423 | { "function_vector", 0, 0, true, false, false, | |
5424 | h8300_handle_fndecl_attribute, false }, | |
5425 | { "eightbit_data", 0, 0, true, false, false, | |
5426 | h8300_handle_eightbit_data_attribute, false }, | |
5427 | { "tiny_data", 0, 0, true, false, false, | |
5428 | h8300_handle_tiny_data_attribute, false }, | |
5429 | { NULL, 0, 0, false, false, false, NULL, false } | |
91d231cb | 5430 | }; |
f5b65a56 | 5431 | |
15dc331e | 5432 | |
91d231cb JM |
5433 | /* Handle an attribute requiring a FUNCTION_DECL; arguments as in |
5434 | struct attribute_spec.handler. */ | |
5435 | static tree | |
cb713a8d KH |
5436 | h8300_handle_fndecl_attribute (tree *node, tree name, |
5437 | tree args ATTRIBUTE_UNUSED, | |
5438 | int flags ATTRIBUTE_UNUSED, | |
5439 | bool *no_add_attrs) | |
91d231cb JM |
5440 | { |
5441 | if (TREE_CODE (*node) != FUNCTION_DECL) | |
5442 | { | |
29d08eba JM |
5443 | warning (OPT_Wattributes, "%qE attribute only applies to functions", |
5444 | name); | |
91d231cb JM |
5445 | *no_add_attrs = true; |
5446 | } | |
5447 | ||
5448 | return NULL_TREE; | |
5449 | } | |
5450 | ||
5451 | /* Handle an "eightbit_data" attribute; arguments as in | |
5452 | struct attribute_spec.handler. */ | |
5453 | static tree | |
cb713a8d KH |
5454 | h8300_handle_eightbit_data_attribute (tree *node, tree name, |
5455 | tree args ATTRIBUTE_UNUSED, | |
5456 | int flags ATTRIBUTE_UNUSED, | |
5457 | bool *no_add_attrs) | |
91d231cb JM |
5458 | { |
5459 | tree decl = *node; | |
5460 | ||
5461 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)) | |
15dc331e | 5462 | { |
64378c91 | 5463 | DECL_SECTION_NAME (decl) = build_string (7, ".eight"); |
91d231cb JM |
5464 | } |
5465 | else | |
5466 | { | |
29d08eba JM |
5467 | warning (OPT_Wattributes, "%qE attribute ignored", |
5468 | name); | |
91d231cb | 5469 | *no_add_attrs = true; |
887a8bd9 JL |
5470 | } |
5471 | ||
91d231cb JM |
5472 | return NULL_TREE; |
5473 | } | |
5474 | ||
5475 | /* Handle an "tiny_data" attribute; arguments as in | |
5476 | struct attribute_spec.handler. */ | |
5477 | static tree | |
cb713a8d KH |
5478 | h8300_handle_tiny_data_attribute (tree *node, tree name, |
5479 | tree args ATTRIBUTE_UNUSED, | |
5480 | int flags ATTRIBUTE_UNUSED, | |
5481 | bool *no_add_attrs) | |
91d231cb JM |
5482 | { |
5483 | tree decl = *node; | |
5484 | ||
5485 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)) | |
887a8bd9 | 5486 | { |
64378c91 | 5487 | DECL_SECTION_NAME (decl) = build_string (6, ".tiny"); |
91d231cb JM |
5488 | } |
5489 | else | |
5490 | { | |
29d08eba JM |
5491 | warning (OPT_Wattributes, "%qE attribute ignored", |
5492 | name); | |
91d231cb | 5493 | *no_add_attrs = true; |
15dc331e | 5494 | } |
07e4d94e | 5495 | |
91d231cb | 5496 | return NULL_TREE; |
f5b65a56 JL |
5497 | } |
5498 | ||
dc66a1c4 | 5499 | /* Mark function vectors, and various small data objects. */ |
fb49053f RH |
5500 | |
5501 | static void | |
cb713a8d | 5502 | h8300_encode_section_info (tree decl, rtx rtl, int first) |
fb49053f | 5503 | { |
dc66a1c4 RH |
5504 | int extra_flags = 0; |
5505 | ||
c6a2438a | 5506 | default_encode_section_info (decl, rtl, first); |
dc66a1c4 | 5507 | |
fb49053f RH |
5508 | if (TREE_CODE (decl) == FUNCTION_DECL |
5509 | && h8300_funcvec_function_p (decl)) | |
dc66a1c4 | 5510 | extra_flags = SYMBOL_FLAG_FUNCVEC_FUNCTION; |
fb49053f RH |
5511 | else if (TREE_CODE (decl) == VAR_DECL |
5512 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) | |
5513 | { | |
5514 | if (h8300_eightbit_data_p (decl)) | |
dc66a1c4 | 5515 | extra_flags = SYMBOL_FLAG_EIGHTBIT_DATA; |
fb49053f | 5516 | else if (first && h8300_tiny_data_p (decl)) |
dc66a1c4 | 5517 | extra_flags = SYMBOL_FLAG_TINY_DATA; |
fb49053f | 5518 | } |
772c5265 | 5519 | |
dc66a1c4 | 5520 | if (extra_flags) |
c6a2438a | 5521 | SYMBOL_REF_FLAGS (XEXP (rtl, 0)) |= extra_flags; |
772c5265 RH |
5522 | } |
5523 | ||
e9eba255 KH |
5524 | /* Output a single-bit extraction. */ |
5525 | ||
441d04c6 | 5526 | const char * |
cb713a8d | 5527 | output_simode_bld (int bild, rtx operands[]) |
bd93f126 | 5528 | { |
6be580c7 KH |
5529 | if (TARGET_H8300) |
5530 | { | |
5531 | /* Clear the destination register. */ | |
5532 | output_asm_insn ("sub.w\t%e0,%e0\n\tsub.w\t%f0,%f0", operands); | |
5533 | ||
5534 | /* Now output the bit load or bit inverse load, and store it in | |
5535 | the destination. */ | |
5536 | if (bild) | |
5537 | output_asm_insn ("bild\t%Z2,%Y1", operands); | |
5538 | else | |
5539 | output_asm_insn ("bld\t%Z2,%Y1", operands); | |
bd93f126 | 5540 | |
6be580c7 KH |
5541 | output_asm_insn ("bst\t#0,%w0", operands); |
5542 | } | |
bd93f126 | 5543 | else |
6be580c7 | 5544 | { |
0eb933a0 KH |
5545 | /* Determine if we can clear the destination first. */ |
5546 | int clear_first = (REG_P (operands[0]) && REG_P (operands[1]) | |
5547 | && REGNO (operands[0]) != REGNO (operands[1])); | |
5548 | ||
5549 | if (clear_first) | |
5550 | output_asm_insn ("sub.l\t%S0,%S0", operands); | |
5551 | ||
6be580c7 KH |
5552 | /* Output the bit load or bit inverse load. */ |
5553 | if (bild) | |
5554 | output_asm_insn ("bild\t%Z2,%Y1", operands); | |
5555 | else | |
5556 | output_asm_insn ("bld\t%Z2,%Y1", operands); | |
5557 | ||
0eb933a0 KH |
5558 | if (!clear_first) |
5559 | output_asm_insn ("xor.l\t%S0,%S0", operands); | |
5560 | ||
5561 | /* Perform the bit store. */ | |
802a9907 | 5562 | output_asm_insn ("rotxl.l\t%S0", operands); |
6be580c7 | 5563 | } |
bd93f126 JL |
5564 | |
5565 | /* All done. */ | |
5566 | return ""; | |
5567 | } | |
e6219736 | 5568 | |
beed8fc0 AO |
5569 | /* Delayed-branch scheduling is more effective if we have some idea |
5570 | how long each instruction will be. Use a shorten_branches pass | |
5571 | to get an initial estimate. */ | |
5572 | ||
5573 | static void | |
5574 | h8300_reorg (void) | |
5575 | { | |
5576 | if (flag_delayed_branch) | |
5577 | shorten_branches (get_insns ()); | |
5578 | } | |
5579 | ||
ede75ee8 | 5580 | #ifndef OBJECT_FORMAT_ELF |
7c262518 | 5581 | static void |
c18a5b6c MM |
5582 | h8300_asm_named_section (const char *name, unsigned int flags ATTRIBUTE_UNUSED, |
5583 | tree decl) | |
7c262518 RH |
5584 | { |
5585 | /* ??? Perhaps we should be using default_coff_asm_named_section. */ | |
5586 | fprintf (asm_out_file, "\t.section %s\n", name); | |
5587 | } | |
ede75ee8 | 5588 | #endif /* ! OBJECT_FORMAT_ELF */ |
803d56f5 | 5589 | |
7c143ed2 KH |
5590 | /* Nonzero if X is a constant address suitable as an 8-bit absolute, |
5591 | which is a special case of the 'R' operand. */ | |
5592 | ||
803d56f5 | 5593 | int |
cb713a8d | 5594 | h8300_eightbit_constant_address_p (rtx x) |
803d56f5 | 5595 | { |
ff482c8d | 5596 | /* The ranges of the 8-bit area. */ |
d2d199a3 KH |
5597 | const unsigned HOST_WIDE_INT n1 = trunc_int_for_mode (0xff00, HImode); |
5598 | const unsigned HOST_WIDE_INT n2 = trunc_int_for_mode (0xffff, HImode); | |
803d56f5 KH |
5599 | const unsigned HOST_WIDE_INT h1 = trunc_int_for_mode (0x00ffff00, SImode); |
5600 | const unsigned HOST_WIDE_INT h2 = trunc_int_for_mode (0x00ffffff, SImode); | |
5601 | const unsigned HOST_WIDE_INT s1 = trunc_int_for_mode (0xffffff00, SImode); | |
5602 | const unsigned HOST_WIDE_INT s2 = trunc_int_for_mode (0xffffffff, SImode); | |
5603 | ||
5604 | unsigned HOST_WIDE_INT addr; | |
5605 | ||
9675a91e | 5606 | /* We accept symbols declared with eightbit_data. */ |
dc66a1c4 RH |
5607 | if (GET_CODE (x) == SYMBOL_REF) |
5608 | return (SYMBOL_REF_FLAGS (x) & SYMBOL_FLAG_EIGHTBIT_DATA) != 0; | |
9675a91e | 5609 | |
803d56f5 KH |
5610 | if (GET_CODE (x) != CONST_INT) |
5611 | return 0; | |
5612 | ||
5613 | addr = INTVAL (x); | |
5614 | ||
5615 | return (0 | |
39ba95b5 | 5616 | || ((TARGET_H8300 || TARGET_NORMAL_MODE) && IN_RANGE (addr, n1, n2)) |
803d56f5 KH |
5617 | || (TARGET_H8300H && IN_RANGE (addr, h1, h2)) |
5618 | || (TARGET_H8300S && IN_RANGE (addr, s1, s2))); | |
5619 | } | |
5620 | ||
7c143ed2 KH |
5621 | /* Nonzero if X is a constant address suitable as an 16-bit absolute |
5622 | on H8/300H and H8S. */ | |
5623 | ||
803d56f5 | 5624 | int |
cb713a8d | 5625 | h8300_tiny_constant_address_p (rtx x) |
803d56f5 | 5626 | { |
3f7211f1 | 5627 | /* The ranges of the 16-bit area. */ |
803d56f5 KH |
5628 | const unsigned HOST_WIDE_INT h1 = trunc_int_for_mode (0x00000000, SImode); |
5629 | const unsigned HOST_WIDE_INT h2 = trunc_int_for_mode (0x00007fff, SImode); | |
5630 | const unsigned HOST_WIDE_INT h3 = trunc_int_for_mode (0x00ff8000, SImode); | |
5631 | const unsigned HOST_WIDE_INT h4 = trunc_int_for_mode (0x00ffffff, SImode); | |
5632 | const unsigned HOST_WIDE_INT s1 = trunc_int_for_mode (0x00000000, SImode); | |
5633 | const unsigned HOST_WIDE_INT s2 = trunc_int_for_mode (0x00007fff, SImode); | |
5634 | const unsigned HOST_WIDE_INT s3 = trunc_int_for_mode (0xffff8000, SImode); | |
5635 | const unsigned HOST_WIDE_INT s4 = trunc_int_for_mode (0xffffffff, SImode); | |
5636 | ||
5637 | unsigned HOST_WIDE_INT addr; | |
5638 | ||
d6456562 KH |
5639 | switch (GET_CODE (x)) |
5640 | { | |
5641 | case SYMBOL_REF: | |
a4bb41cc KH |
5642 | /* In the normal mode, any symbol fits in the 16-bit absolute |
5643 | address range. We also accept symbols declared with | |
5644 | tiny_data. */ | |
5645 | return (TARGET_NORMAL_MODE | |
5646 | || (SYMBOL_REF_FLAGS (x) & SYMBOL_FLAG_TINY_DATA) != 0); | |
56b8e164 | 5647 | |
d6456562 KH |
5648 | case CONST_INT: |
5649 | addr = INTVAL (x); | |
5650 | return (TARGET_NORMAL_MODE | |
5651 | || (TARGET_H8300H | |
5652 | && (IN_RANGE (addr, h1, h2) || IN_RANGE (addr, h3, h4))) | |
5653 | || (TARGET_H8300S | |
5654 | && (IN_RANGE (addr, s1, s2) || IN_RANGE (addr, s3, s4)))); | |
803d56f5 | 5655 | |
a4bb41cc KH |
5656 | case CONST: |
5657 | return TARGET_NORMAL_MODE; | |
5658 | ||
d6456562 KH |
5659 | default: |
5660 | return 0; | |
5661 | } | |
803d56f5 | 5662 | |
803d56f5 | 5663 | } |
9b98dc74 | 5664 | |
e9eba255 KH |
5665 | /* Return nonzero if ADDR1 and ADDR2 point to consecutive memory |
5666 | locations that can be accessed as a 16-bit word. */ | |
5667 | ||
9b98dc74 | 5668 | int |
cb713a8d | 5669 | byte_accesses_mergeable_p (rtx addr1, rtx addr2) |
9b98dc74 KH |
5670 | { |
5671 | HOST_WIDE_INT offset1, offset2; | |
5672 | rtx reg1, reg2; | |
5673 | ||
5674 | if (REG_P (addr1)) | |
5675 | { | |
5676 | reg1 = addr1; | |
5677 | offset1 = 0; | |
5678 | } | |
5679 | else if (GET_CODE (addr1) == PLUS | |
5680 | && REG_P (XEXP (addr1, 0)) | |
5681 | && GET_CODE (XEXP (addr1, 1)) == CONST_INT) | |
5682 | { | |
5683 | reg1 = XEXP (addr1, 0); | |
5684 | offset1 = INTVAL (XEXP (addr1, 1)); | |
5685 | } | |
5686 | else | |
5687 | return 0; | |
5688 | ||
5689 | if (REG_P (addr2)) | |
5690 | { | |
5691 | reg2 = addr2; | |
5692 | offset2 = 0; | |
5693 | } | |
5694 | else if (GET_CODE (addr2) == PLUS | |
5695 | && REG_P (XEXP (addr2, 0)) | |
5696 | && GET_CODE (XEXP (addr2, 1)) == CONST_INT) | |
5697 | { | |
5698 | reg2 = XEXP (addr2, 0); | |
5699 | offset2 = INTVAL (XEXP (addr2, 1)); | |
5700 | } | |
5701 | else | |
5702 | return 0; | |
5703 | ||
5704 | if (((reg1 == stack_pointer_rtx && reg2 == stack_pointer_rtx) | |
5705 | || (reg1 == frame_pointer_rtx && reg2 == frame_pointer_rtx)) | |
5706 | && offset1 % 2 == 0 | |
5707 | && offset1 + 1 == offset2) | |
5708 | return 1; | |
5709 | ||
5710 | return 0; | |
5711 | } | |
02529902 KH |
5712 | |
5713 | /* Return nonzero if we have the same comparison insn as I3 two insns | |
19cff4db | 5714 | before I3. I3 is assumed to be a comparison insn. */ |
02529902 KH |
5715 | |
5716 | int | |
5717 | same_cmp_preceding_p (rtx i3) | |
5718 | { | |
5719 | rtx i1, i2; | |
5720 | ||
5721 | /* Make sure we have a sequence of three insns. */ | |
5722 | i2 = prev_nonnote_insn (i3); | |
5723 | if (i2 == NULL_RTX) | |
5724 | return 0; | |
5725 | i1 = prev_nonnote_insn (i2); | |
5726 | if (i1 == NULL_RTX) | |
5727 | return 0; | |
5728 | ||
5729 | return (INSN_P (i1) && rtx_equal_p (PATTERN (i1), PATTERN (i3)) | |
5730 | && any_condjump_p (i2) && onlyjump_p (i2)); | |
5731 | } | |
c87ec0ba | 5732 | |
c06d5c85 KH |
5733 | /* Return nonzero if we have the same comparison insn as I1 two insns |
5734 | after I1. I1 is assumed to be a comparison insn. */ | |
5735 | ||
5736 | int | |
5737 | same_cmp_following_p (rtx i1) | |
5738 | { | |
5739 | rtx i2, i3; | |
5740 | ||
5741 | /* Make sure we have a sequence of three insns. */ | |
5742 | i2 = next_nonnote_insn (i1); | |
5743 | if (i2 == NULL_RTX) | |
5744 | return 0; | |
5745 | i3 = next_nonnote_insn (i2); | |
5746 | if (i3 == NULL_RTX) | |
5747 | return 0; | |
5748 | ||
5749 | return (INSN_P (i3) && rtx_equal_p (PATTERN (i1), PATTERN (i3)) | |
5750 | && any_condjump_p (i2) && onlyjump_p (i2)); | |
5751 | } | |
5752 | ||
a466bea3 | 5753 | /* Return nonzero if OPERANDS are valid for stm (or ldm) that pushes |
1ae58c30 | 5754 | (or pops) N registers. OPERANDS are assumed to be an array of |
a466bea3 KH |
5755 | registers. */ |
5756 | ||
5757 | int | |
5758 | h8300_regs_ok_for_stm (int n, rtx operands[]) | |
5759 | { | |
5760 | switch (n) | |
5761 | { | |
5762 | case 2: | |
5763 | return ((REGNO (operands[0]) == 0 && REGNO (operands[1]) == 1) | |
5764 | || (REGNO (operands[0]) == 2 && REGNO (operands[1]) == 3) | |
5765 | || (REGNO (operands[0]) == 4 && REGNO (operands[1]) == 5)); | |
5766 | case 3: | |
5767 | return ((REGNO (operands[0]) == 0 | |
5768 | && REGNO (operands[1]) == 1 | |
5769 | && REGNO (operands[2]) == 2) | |
5770 | || (REGNO (operands[0]) == 4 | |
5771 | && REGNO (operands[1]) == 5 | |
5772 | && REGNO (operands[2]) == 6)); | |
5773 | ||
5774 | case 4: | |
5775 | return (REGNO (operands[0]) == 0 | |
5776 | && REGNO (operands[1]) == 1 | |
5777 | && REGNO (operands[2]) == 2 | |
5778 | && REGNO (operands[3]) == 3); | |
8c440872 NS |
5779 | default: |
5780 | gcc_unreachable (); | |
a466bea3 | 5781 | } |
a466bea3 KH |
5782 | } |
5783 | ||
c87ec0ba NY |
5784 | /* Return nonzero if register OLD_REG can be renamed to register NEW_REG. */ |
5785 | ||
5786 | int | |
5787 | h8300_hard_regno_rename_ok (unsigned int old_reg ATTRIBUTE_UNUSED, | |
5788 | unsigned int new_reg) | |
5789 | { | |
5790 | /* Interrupt functions can only use registers that have already been | |
5791 | saved by the prologue, even if they would normally be | |
5792 | call-clobbered. */ | |
5793 | ||
5794 | if (h8300_current_function_interrupt_function_p () | |
6fb5fa3c | 5795 | && !df_regs_ever_live_p (new_reg)) |
c87ec0ba NY |
5796 | return 0; |
5797 | ||
80e58519 | 5798 | return 1; |
c87ec0ba | 5799 | } |
d0022200 | 5800 | |
2e762884 DD |
5801 | /* Returns true if register REGNO is safe to be allocated as a scratch |
5802 | register in the current function. */ | |
5803 | ||
5804 | static bool | |
5805 | h8300_hard_regno_scratch_ok (unsigned int regno) | |
5806 | { | |
5807 | if (h8300_current_function_interrupt_function_p () | |
5808 | && ! WORD_REG_USED (regno)) | |
5809 | return false; | |
5810 | ||
5811 | return true; | |
5812 | } | |
5813 | ||
5814 | ||
d0022200 KH |
5815 | /* Return nonzero if X is a REG or SUBREG suitable as a base register. */ |
5816 | ||
5817 | static int | |
5818 | h8300_rtx_ok_for_base_p (rtx x, int strict) | |
5819 | { | |
5820 | /* Strip off SUBREG if any. */ | |
5821 | if (GET_CODE (x) == SUBREG) | |
5822 | x = SUBREG_REG (x); | |
5823 | ||
5824 | return (REG_P (x) | |
5825 | && (strict | |
5826 | ? REG_OK_FOR_BASE_STRICT_P (x) | |
5827 | : REG_OK_FOR_BASE_NONSTRICT_P (x))); | |
5828 | } | |
5829 | ||
5830 | /* Return nozero if X is a legitimate address. On the H8/300, a | |
5831 | legitimate address has the form REG, REG+CONSTANT_ADDRESS or | |
5832 | CONSTANT_ADDRESS. */ | |
5833 | ||
c6c3dba9 PB |
5834 | static bool |
5835 | h8300_legitimate_address_p (enum machine_mode mode, rtx x, bool strict) | |
d0022200 KH |
5836 | { |
5837 | /* The register indirect addresses like @er0 is always valid. */ | |
5838 | if (h8300_rtx_ok_for_base_p (x, strict)) | |
5839 | return 1; | |
5840 | ||
5841 | if (CONSTANT_ADDRESS_P (x)) | |
5842 | return 1; | |
5843 | ||
beed8fc0 AO |
5844 | if (TARGET_H8300SX |
5845 | && ( GET_CODE (x) == PRE_INC | |
5846 | || GET_CODE (x) == PRE_DEC | |
5847 | || GET_CODE (x) == POST_INC | |
5848 | || GET_CODE (x) == POST_DEC) | |
5849 | && h8300_rtx_ok_for_base_p (XEXP (x, 0), strict)) | |
5850 | return 1; | |
5851 | ||
d0022200 KH |
5852 | if (GET_CODE (x) == PLUS |
5853 | && CONSTANT_ADDRESS_P (XEXP (x, 1)) | |
beed8fc0 AO |
5854 | && h8300_rtx_ok_for_base_p (h8300_get_index (XEXP (x, 0), |
5855 | mode, 0), strict)) | |
d0022200 KH |
5856 | return 1; |
5857 | ||
5858 | return 0; | |
5859 | } | |
07ee3b58 KH |
5860 | |
5861 | /* Worker function for HARD_REGNO_NREGS. | |
5862 | ||
5863 | We pretend the MAC register is 32bits -- we don't have any data | |
5864 | types on the H8 series to handle more than 32bits. */ | |
5865 | ||
5866 | int | |
5867 | h8300_hard_regno_nregs (int regno ATTRIBUTE_UNUSED, enum machine_mode mode) | |
5868 | { | |
5869 | return (GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD; | |
5870 | } | |
5871 | ||
5872 | /* Worker function for HARD_REGNO_MODE_OK. */ | |
5873 | ||
5874 | int | |
5875 | h8300_hard_regno_mode_ok (int regno, enum machine_mode mode) | |
5876 | { | |
5877 | if (TARGET_H8300) | |
5878 | /* If an even reg, then anything goes. Otherwise the mode must be | |
5879 | QI or HI. */ | |
5880 | return ((regno & 1) == 0) || (mode == HImode) || (mode == QImode); | |
5881 | else | |
5882 | /* MAC register can only be of SImode. Otherwise, anything | |
5883 | goes. */ | |
5884 | return regno == MAC_REG ? mode == SImode : 1; | |
5885 | } | |
f9b4f8c1 RH |
5886 | |
5887 | /* Helper function for the move patterns. Make sure a move is legitimate. */ | |
5888 | ||
5889 | bool | |
5890 | h8300_move_ok (rtx dest, rtx src) | |
5891 | { | |
5892 | rtx addr, other; | |
5893 | ||
5894 | /* Validate that at least one operand is a register. */ | |
5895 | if (MEM_P (dest)) | |
5896 | { | |
5897 | if (MEM_P (src) || CONSTANT_P (src)) | |
5898 | return false; | |
5899 | addr = XEXP (dest, 0); | |
5900 | other = src; | |
5901 | } | |
5902 | else if (MEM_P (src)) | |
5903 | { | |
5904 | addr = XEXP (src, 0); | |
5905 | other = dest; | |
5906 | } | |
5907 | else | |
5908 | return true; | |
5909 | ||
5910 | /* Validate that auto-inc doesn't affect OTHER. */ | |
5911 | if (GET_RTX_CLASS (GET_CODE (addr)) != RTX_AUTOINC) | |
5912 | return true; | |
5913 | addr = XEXP (addr, 0); | |
5914 | ||
5915 | if (addr == stack_pointer_rtx) | |
5916 | return register_no_sp_elim_operand (other, VOIDmode); | |
5917 | else | |
5918 | return !reg_overlap_mentioned_p(other, addr); | |
5919 | } | |
6e014ef3 | 5920 | \f |
c15c90bb ZW |
5921 | /* Perform target dependent optabs initialization. */ |
5922 | static void | |
5923 | h8300_init_libfuncs (void) | |
5924 | { | |
5925 | set_optab_libfunc (smul_optab, HImode, "__mulhi3"); | |
5926 | set_optab_libfunc (sdiv_optab, HImode, "__divhi3"); | |
5927 | set_optab_libfunc (udiv_optab, HImode, "__udivhi3"); | |
5928 | set_optab_libfunc (smod_optab, HImode, "__modhi3"); | |
5929 | set_optab_libfunc (umod_optab, HImode, "__umodhi3"); | |
5930 | } | |
5931 | \f | |
9eaa7740 AS |
5932 | /* Worker function for TARGET_FUNCTION_VALUE. |
5933 | ||
5934 | On the H8 the return value is in R0/R1. */ | |
5935 | ||
5936 | static rtx | |
5937 | h8300_function_value (const_tree ret_type, | |
5938 | const_tree fn_decl_or_type ATTRIBUTE_UNUSED, | |
5939 | bool outgoing ATTRIBUTE_UNUSED) | |
5940 | { | |
5941 | return gen_rtx_REG (TYPE_MODE (ret_type), R0_REG); | |
5942 | } | |
5943 | ||
5944 | /* Worker function for TARGET_LIBCALL_VALUE. | |
5945 | ||
5946 | On the H8 the return value is in R0/R1. */ | |
5947 | ||
5948 | static rtx | |
5949 | h8300_libcall_value (enum machine_mode mode, const_rtx fun ATTRIBUTE_UNUSED) | |
5950 | { | |
5951 | return gen_rtx_REG (mode, R0_REG); | |
5952 | } | |
5953 | ||
5954 | /* Worker function for TARGET_FUNCTION_VALUE_REGNO_P. | |
5955 | ||
5956 | On the H8, R0 is the only register thus used. */ | |
5957 | ||
5958 | static bool | |
5959 | h8300_function_value_regno_p (const unsigned int regno) | |
5960 | { | |
5961 | return (regno == R0_REG); | |
5962 | } | |
5963 | ||
e9eba255 KH |
5964 | /* Worker function for TARGET_RETURN_IN_MEMORY. */ |
5965 | ||
34bf1fe3 | 5966 | static bool |
586de218 | 5967 | h8300_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED) |
34bf1fe3 KH |
5968 | { |
5969 | return (TYPE_MODE (type) == BLKmode | |
5970 | || GET_MODE_SIZE (TYPE_MODE (type)) > (TARGET_H8300 ? 4 : 8)); | |
5971 | } | |
5972 | \f | |
9f6ef043 RH |
5973 | /* We emit the entire trampoline here. Depending on the pointer size, |
5974 | we use a different trampoline. | |
5975 | ||
5976 | Pmode == HImode | |
5977 | vvvv context | |
5978 | 1 0000 7903xxxx mov.w #0x1234,r3 | |
5979 | 2 0004 5A00xxxx jmp @0x1234 | |
5980 | ^^^^ function | |
5981 | ||
5982 | Pmode == SImode | |
5983 | vvvvvvvv context | |
5984 | 2 0000 7A03xxxxxxxx mov.l #0x12345678,er3 | |
5985 | 3 0006 5Axxxxxx jmp @0x123456 | |
5986 | ^^^^^^ function | |
5987 | */ | |
5988 | ||
5989 | static void | |
5990 | h8300_trampoline_init (rtx m_tramp, tree fndecl, rtx cxt) | |
5991 | { | |
5992 | rtx fnaddr = XEXP (DECL_RTL (fndecl), 0); | |
5993 | rtx mem; | |
5994 | ||
5995 | if (Pmode == HImode) | |
5996 | { | |
5997 | mem = adjust_address (m_tramp, HImode, 0); | |
5998 | emit_move_insn (mem, GEN_INT (0x7903)); | |
5999 | mem = adjust_address (m_tramp, Pmode, 2); | |
6000 | emit_move_insn (mem, cxt); | |
6001 | mem = adjust_address (m_tramp, HImode, 4); | |
6002 | emit_move_insn (mem, GEN_INT (0x5a00)); | |
6003 | mem = adjust_address (m_tramp, Pmode, 6); | |
6004 | emit_move_insn (mem, fnaddr); | |
6005 | } | |
6006 | else | |
6007 | { | |
6008 | rtx tem; | |
6009 | ||
6010 | mem = adjust_address (m_tramp, HImode, 0); | |
6011 | emit_move_insn (mem, GEN_INT (0x7a03)); | |
6012 | mem = adjust_address (m_tramp, Pmode, 2); | |
6013 | emit_move_insn (mem, cxt); | |
6014 | ||
6015 | tem = copy_to_reg (fnaddr); | |
6016 | emit_insn (gen_andsi3 (tem, tem, GEN_INT (0x00ffffff))); | |
6017 | emit_insn (gen_iorsi3 (tem, tem, GEN_INT (0x5a000000))); | |
6018 | mem = adjust_address (m_tramp, SImode, 6); | |
6019 | emit_move_insn (mem, tem); | |
6020 | } | |
6021 | } | |
6022 | \f | |
6e014ef3 KH |
6023 | /* Initialize the GCC target structure. */ |
6024 | #undef TARGET_ATTRIBUTE_TABLE | |
6025 | #define TARGET_ATTRIBUTE_TABLE h8300_attribute_table | |
6026 | ||
6027 | #undef TARGET_ASM_ALIGNED_HI_OP | |
6028 | #define TARGET_ASM_ALIGNED_HI_OP "\t.word\t" | |
6029 | ||
1bc7c5b6 ZW |
6030 | #undef TARGET_ASM_FILE_START |
6031 | #define TARGET_ASM_FILE_START h8300_file_start | |
6032 | #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE | |
6033 | #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true | |
6034 | ||
6e014ef3 KH |
6035 | #undef TARGET_ASM_FILE_END |
6036 | #define TARGET_ASM_FILE_END h8300_file_end | |
6037 | ||
88cb339e N |
6038 | #undef TARGET_PRINT_OPERAND |
6039 | #define TARGET_PRINT_OPERAND h8300_print_operand | |
6040 | #undef TARGET_PRINT_OPERAND_ADDRESS | |
6041 | #define TARGET_PRINT_OPERAND_ADDRESS h8300_print_operand_address | |
6042 | #undef TARGET_PRINT_OPERAND_PUNCT_VALID_P | |
6043 | #define TARGET_PRINT_OPERAND_PUNCT_VALID_P h8300_print_operand_punct_valid_p | |
6044 | ||
6e014ef3 KH |
6045 | #undef TARGET_ENCODE_SECTION_INFO |
6046 | #define TARGET_ENCODE_SECTION_INFO h8300_encode_section_info | |
6047 | ||
6048 | #undef TARGET_INSERT_ATTRIBUTES | |
6049 | #define TARGET_INSERT_ATTRIBUTES h8300_insert_attributes | |
6050 | ||
88cb339e N |
6051 | #undef TARGET_REGISTER_MOVE_COST |
6052 | #define TARGET_REGISTER_MOVE_COST h8300_register_move_cost | |
6053 | ||
6e014ef3 KH |
6054 | #undef TARGET_RTX_COSTS |
6055 | #define TARGET_RTX_COSTS h8300_rtx_costs | |
6056 | ||
c15c90bb ZW |
6057 | #undef TARGET_INIT_LIBFUNCS |
6058 | #define TARGET_INIT_LIBFUNCS h8300_init_libfuncs | |
6059 | ||
9eaa7740 AS |
6060 | #undef TARGET_FUNCTION_VALUE |
6061 | #define TARGET_FUNCTION_VALUE h8300_function_value | |
6062 | ||
6063 | #undef TARGET_LIBCALL_VALUE | |
6064 | #define TARGET_LIBCALL_VALUE h8300_libcall_value | |
6065 | ||
6066 | #undef TARGET_FUNCTION_VALUE_REGNO_P | |
6067 | #define TARGET_FUNCTION_VALUE_REGNO_P h8300_function_value_regno_p | |
6068 | ||
34bf1fe3 KH |
6069 | #undef TARGET_RETURN_IN_MEMORY |
6070 | #define TARGET_RETURN_IN_MEMORY h8300_return_in_memory | |
6071 | ||
56f9413b NF |
6072 | #undef TARGET_FUNCTION_ARG |
6073 | #define TARGET_FUNCTION_ARG h8300_function_arg | |
6074 | ||
6075 | #undef TARGET_FUNCTION_ARG_ADVANCE | |
6076 | #define TARGET_FUNCTION_ARG_ADVANCE h8300_function_arg_advance | |
6077 | ||
beed8fc0 AO |
6078 | #undef TARGET_MACHINE_DEPENDENT_REORG |
6079 | #define TARGET_MACHINE_DEPENDENT_REORG h8300_reorg | |
6080 | ||
2e762884 DD |
6081 | #undef TARGET_HARD_REGNO_SCRATCH_OK |
6082 | #define TARGET_HARD_REGNO_SCRATCH_OK h8300_hard_regno_scratch_ok | |
6083 | ||
c6c3dba9 PB |
6084 | #undef TARGET_LEGITIMATE_ADDRESS_P |
6085 | #define TARGET_LEGITIMATE_ADDRESS_P h8300_legitimate_address_p | |
6086 | ||
7b5cbb57 AS |
6087 | #undef TARGET_CAN_ELIMINATE |
6088 | #define TARGET_CAN_ELIMINATE h8300_can_eliminate | |
6089 | ||
5efd84c5 NF |
6090 | #undef TARGET_CONDITIONAL_REGISTER_USAGE |
6091 | #define TARGET_CONDITIONAL_REGISTER_USAGE h8300_conditional_register_usage | |
6092 | ||
9f6ef043 RH |
6093 | #undef TARGET_TRAMPOLINE_INIT |
6094 | #define TARGET_TRAMPOLINE_INIT h8300_trampoline_init | |
6095 | ||
c5387660 JM |
6096 | #undef TARGET_OPTION_OVERRIDE |
6097 | #define TARGET_OPTION_OVERRIDE h8300_option_override | |
6098 | ||
f52d97da AS |
6099 | #undef TARGET_MODE_DEPENDENT_ADDRESS_P |
6100 | #define TARGET_MODE_DEPENDENT_ADDRESS_P h8300_mode_dependent_address_p | |
6101 | ||
6e014ef3 | 6102 | struct gcc_target targetm = TARGET_INITIALIZER; |