root / tcg / tcg.c @ 8686c490
History | View | Annotate | Download (56.2 kB)
1 | c896fe29 | bellard | /*
|
---|---|---|---|
2 | c896fe29 | bellard | * Tiny Code Generator for QEMU
|
3 | c896fe29 | bellard | *
|
4 | c896fe29 | bellard | * Copyright (c) 2008 Fabrice Bellard
|
5 | c896fe29 | bellard | *
|
6 | c896fe29 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 | c896fe29 | bellard | * of this software and associated documentation files (the "Software"), to deal
|
8 | c896fe29 | bellard | * in the Software without restriction, including without limitation the rights
|
9 | c896fe29 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 | c896fe29 | bellard | * copies of the Software, and to permit persons to whom the Software is
|
11 | c896fe29 | bellard | * furnished to do so, subject to the following conditions:
|
12 | c896fe29 | bellard | *
|
13 | c896fe29 | bellard | * The above copyright notice and this permission notice shall be included in
|
14 | c896fe29 | bellard | * all copies or substantial portions of the Software.
|
15 | c896fe29 | bellard | *
|
16 | c896fe29 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 | c896fe29 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 | c896fe29 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 | c896fe29 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 | c896fe29 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 | c896fe29 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 | c896fe29 | bellard | * THE SOFTWARE.
|
23 | c896fe29 | bellard | */
|
24 | c896fe29 | bellard | |
25 | c896fe29 | bellard | /* define it to suppress various consistency checks (faster) */
|
26 | c896fe29 | bellard | #define NDEBUG
|
27 | c896fe29 | bellard | |
28 | c896fe29 | bellard | /* define it to use liveness analysis (better code) */
|
29 | c896fe29 | bellard | #define USE_LIVENESS_ANALYSIS
|
30 | c896fe29 | bellard | |
31 | c896fe29 | bellard | #include <assert.h> |
32 | c896fe29 | bellard | #include <stdarg.h> |
33 | c896fe29 | bellard | #include <stdlib.h> |
34 | c896fe29 | bellard | #include <stdio.h> |
35 | c896fe29 | bellard | #include <string.h> |
36 | c896fe29 | bellard | #include <inttypes.h> |
37 | 3fe43da7 | bellard | #ifdef _WIN32
|
38 | 3fe43da7 | bellard | #include <malloc.h> |
39 | 3fe43da7 | bellard | #endif
|
40 | c896fe29 | bellard | |
41 | c896fe29 | bellard | #include "config.h" |
42 | ca10f867 | aurel32 | #include "qemu-common.h" |
43 | c896fe29 | bellard | |
44 | c896fe29 | bellard | /* Note: the long term plan is to reduce the dependancies on the QEMU
|
45 | c896fe29 | bellard | CPU definitions. Currently they are used for qemu_ld/st
|
46 | c896fe29 | bellard | instructions */
|
47 | c896fe29 | bellard | #define NO_CPU_IO_DEFS
|
48 | c896fe29 | bellard | #include "cpu.h" |
49 | c896fe29 | bellard | #include "exec-all.h" |
50 | c896fe29 | bellard | |
51 | c896fe29 | bellard | #include "tcg-op.h" |
52 | c896fe29 | bellard | #include "elf.h" |
53 | c896fe29 | bellard | |
54 | c896fe29 | bellard | |
55 | c896fe29 | bellard | static void patch_reloc(uint8_t *code_ptr, int type, |
56 | f54b3f92 | aurel32 | tcg_target_long value, tcg_target_long addend); |
57 | c896fe29 | bellard | |
58 | c896fe29 | bellard | TCGOpDef tcg_op_defs[] = { |
59 | c896fe29 | bellard | #define DEF(s, n, copy_size) { #s, 0, 0, n, n, 0, copy_size }, |
60 | c896fe29 | bellard | #define DEF2(s, iargs, oargs, cargs, flags) { #s, iargs, oargs, cargs, iargs + oargs + cargs, flags, 0 }, |
61 | c896fe29 | bellard | #include "tcg-opc.h" |
62 | c896fe29 | bellard | #undef DEF
|
63 | c896fe29 | bellard | #undef DEF2
|
64 | c896fe29 | bellard | }; |
65 | c896fe29 | bellard | |
66 | c896fe29 | bellard | TCGRegSet tcg_target_available_regs[2];
|
67 | c896fe29 | bellard | TCGRegSet tcg_target_call_clobber_regs; |
68 | c896fe29 | bellard | |
69 | c896fe29 | bellard | /* XXX: move that inside the context */
|
70 | c896fe29 | bellard | uint16_t *gen_opc_ptr; |
71 | c896fe29 | bellard | TCGArg *gen_opparam_ptr; |
72 | c896fe29 | bellard | |
73 | c896fe29 | bellard | static inline void tcg_out8(TCGContext *s, uint8_t v) |
74 | c896fe29 | bellard | { |
75 | c896fe29 | bellard | *s->code_ptr++ = v; |
76 | c896fe29 | bellard | } |
77 | c896fe29 | bellard | |
78 | c896fe29 | bellard | static inline void tcg_out16(TCGContext *s, uint16_t v) |
79 | c896fe29 | bellard | { |
80 | c896fe29 | bellard | *(uint16_t *)s->code_ptr = v; |
81 | c896fe29 | bellard | s->code_ptr += 2;
|
82 | c896fe29 | bellard | } |
83 | c896fe29 | bellard | |
84 | c896fe29 | bellard | static inline void tcg_out32(TCGContext *s, uint32_t v) |
85 | c896fe29 | bellard | { |
86 | c896fe29 | bellard | *(uint32_t *)s->code_ptr = v; |
87 | c896fe29 | bellard | s->code_ptr += 4;
|
88 | c896fe29 | bellard | } |
89 | c896fe29 | bellard | |
90 | c896fe29 | bellard | /* label relocation processing */
|
91 | c896fe29 | bellard | |
92 | c896fe29 | bellard | void tcg_out_reloc(TCGContext *s, uint8_t *code_ptr, int type, |
93 | c896fe29 | bellard | int label_index, long addend) |
94 | c896fe29 | bellard | { |
95 | c896fe29 | bellard | TCGLabel *l; |
96 | c896fe29 | bellard | TCGRelocation *r; |
97 | c896fe29 | bellard | |
98 | c896fe29 | bellard | l = &s->labels[label_index]; |
99 | c896fe29 | bellard | if (l->has_value) {
|
100 | 623e265c | pbrook | /* FIXME: This may break relocations on RISC targets that
|
101 | 623e265c | pbrook | modify instruction fields in place. The caller may not have
|
102 | 623e265c | pbrook | written the initial value. */
|
103 | f54b3f92 | aurel32 | patch_reloc(code_ptr, type, l->u.value, addend); |
104 | c896fe29 | bellard | } else {
|
105 | c896fe29 | bellard | /* add a new relocation entry */
|
106 | c896fe29 | bellard | r = tcg_malloc(sizeof(TCGRelocation));
|
107 | c896fe29 | bellard | r->type = type; |
108 | c896fe29 | bellard | r->ptr = code_ptr; |
109 | c896fe29 | bellard | r->addend = addend; |
110 | c896fe29 | bellard | r->next = l->u.first_reloc; |
111 | c896fe29 | bellard | l->u.first_reloc = r; |
112 | c896fe29 | bellard | } |
113 | c896fe29 | bellard | } |
114 | c896fe29 | bellard | |
115 | c896fe29 | bellard | static void tcg_out_label(TCGContext *s, int label_index, |
116 | c896fe29 | bellard | tcg_target_long value) |
117 | c896fe29 | bellard | { |
118 | c896fe29 | bellard | TCGLabel *l; |
119 | c896fe29 | bellard | TCGRelocation *r; |
120 | c896fe29 | bellard | |
121 | c896fe29 | bellard | l = &s->labels[label_index]; |
122 | c896fe29 | bellard | if (l->has_value)
|
123 | c896fe29 | bellard | tcg_abort(); |
124 | c896fe29 | bellard | r = l->u.first_reloc; |
125 | c896fe29 | bellard | while (r != NULL) { |
126 | f54b3f92 | aurel32 | patch_reloc(r->ptr, r->type, value, r->addend); |
127 | c896fe29 | bellard | r = r->next; |
128 | c896fe29 | bellard | } |
129 | c896fe29 | bellard | l->has_value = 1;
|
130 | c896fe29 | bellard | l->u.value = value; |
131 | c896fe29 | bellard | } |
132 | c896fe29 | bellard | |
133 | c896fe29 | bellard | int gen_new_label(void) |
134 | c896fe29 | bellard | { |
135 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
136 | c896fe29 | bellard | int idx;
|
137 | c896fe29 | bellard | TCGLabel *l; |
138 | c896fe29 | bellard | |
139 | c896fe29 | bellard | if (s->nb_labels >= TCG_MAX_LABELS)
|
140 | c896fe29 | bellard | tcg_abort(); |
141 | c896fe29 | bellard | idx = s->nb_labels++; |
142 | c896fe29 | bellard | l = &s->labels[idx]; |
143 | c896fe29 | bellard | l->has_value = 0;
|
144 | c896fe29 | bellard | l->u.first_reloc = NULL;
|
145 | c896fe29 | bellard | return idx;
|
146 | c896fe29 | bellard | } |
147 | c896fe29 | bellard | |
148 | c896fe29 | bellard | #include "tcg-target.c" |
149 | c896fe29 | bellard | |
150 | c896fe29 | bellard | /* pool based memory allocation */
|
151 | c896fe29 | bellard | void *tcg_malloc_internal(TCGContext *s, int size) |
152 | c896fe29 | bellard | { |
153 | c896fe29 | bellard | TCGPool *p; |
154 | c896fe29 | bellard | int pool_size;
|
155 | c896fe29 | bellard | |
156 | c896fe29 | bellard | if (size > TCG_POOL_CHUNK_SIZE) {
|
157 | c896fe29 | bellard | /* big malloc: insert a new pool (XXX: could optimize) */
|
158 | c896fe29 | bellard | p = qemu_malloc(sizeof(TCGPool) + size);
|
159 | c896fe29 | bellard | p->size = size; |
160 | c896fe29 | bellard | if (s->pool_current)
|
161 | c896fe29 | bellard | s->pool_current->next = p; |
162 | c896fe29 | bellard | else
|
163 | c896fe29 | bellard | s->pool_first = p; |
164 | c896fe29 | bellard | p->next = s->pool_current; |
165 | c896fe29 | bellard | } else {
|
166 | c896fe29 | bellard | p = s->pool_current; |
167 | c896fe29 | bellard | if (!p) {
|
168 | c896fe29 | bellard | p = s->pool_first; |
169 | c896fe29 | bellard | if (!p)
|
170 | c896fe29 | bellard | goto new_pool;
|
171 | c896fe29 | bellard | } else {
|
172 | c896fe29 | bellard | if (!p->next) {
|
173 | c896fe29 | bellard | new_pool:
|
174 | c896fe29 | bellard | pool_size = TCG_POOL_CHUNK_SIZE; |
175 | c896fe29 | bellard | p = qemu_malloc(sizeof(TCGPool) + pool_size);
|
176 | c896fe29 | bellard | p->size = pool_size; |
177 | c896fe29 | bellard | p->next = NULL;
|
178 | c896fe29 | bellard | if (s->pool_current)
|
179 | c896fe29 | bellard | s->pool_current->next = p; |
180 | c896fe29 | bellard | else
|
181 | c896fe29 | bellard | s->pool_first = p; |
182 | c896fe29 | bellard | } else {
|
183 | c896fe29 | bellard | p = p->next; |
184 | c896fe29 | bellard | } |
185 | c896fe29 | bellard | } |
186 | c896fe29 | bellard | } |
187 | c896fe29 | bellard | s->pool_current = p; |
188 | c896fe29 | bellard | s->pool_cur = p->data + size; |
189 | c896fe29 | bellard | s->pool_end = p->data + p->size; |
190 | c896fe29 | bellard | return p->data;
|
191 | c896fe29 | bellard | } |
192 | c896fe29 | bellard | |
193 | c896fe29 | bellard | void tcg_pool_reset(TCGContext *s)
|
194 | c896fe29 | bellard | { |
195 | c896fe29 | bellard | s->pool_cur = s->pool_end = NULL;
|
196 | c896fe29 | bellard | s->pool_current = NULL;
|
197 | c896fe29 | bellard | } |
198 | c896fe29 | bellard | |
199 | c896fe29 | bellard | /* free all the pool */
|
200 | c896fe29 | bellard | void tcg_pool_free(TCGContext *s)
|
201 | c896fe29 | bellard | { |
202 | c896fe29 | bellard | TCGPool *p, *p1; |
203 | c896fe29 | bellard | |
204 | c896fe29 | bellard | for(p = s->pool_first; p != NULL; p = p1) { |
205 | c896fe29 | bellard | p1 = p->next; |
206 | c896fe29 | bellard | qemu_free(p); |
207 | c896fe29 | bellard | } |
208 | c896fe29 | bellard | s->pool_first = NULL;
|
209 | c896fe29 | bellard | s->pool_cur = s->pool_end = NULL;
|
210 | c896fe29 | bellard | } |
211 | c896fe29 | bellard | |
212 | c896fe29 | bellard | void tcg_context_init(TCGContext *s)
|
213 | c896fe29 | bellard | { |
214 | c896fe29 | bellard | int op, total_args, n;
|
215 | c896fe29 | bellard | TCGOpDef *def; |
216 | c896fe29 | bellard | TCGArgConstraint *args_ct; |
217 | c896fe29 | bellard | int *sorted_args;
|
218 | c896fe29 | bellard | |
219 | c896fe29 | bellard | memset(s, 0, sizeof(*s)); |
220 | c896fe29 | bellard | s->temps = s->static_temps; |
221 | c896fe29 | bellard | s->nb_globals = 0;
|
222 | c896fe29 | bellard | |
223 | c896fe29 | bellard | /* Count total number of arguments and allocate the corresponding
|
224 | c896fe29 | bellard | space */
|
225 | c896fe29 | bellard | total_args = 0;
|
226 | c896fe29 | bellard | for(op = 0; op < NB_OPS; op++) { |
227 | c896fe29 | bellard | def = &tcg_op_defs[op]; |
228 | c896fe29 | bellard | n = def->nb_iargs + def->nb_oargs; |
229 | c896fe29 | bellard | total_args += n; |
230 | c896fe29 | bellard | } |
231 | c896fe29 | bellard | |
232 | c896fe29 | bellard | args_ct = qemu_malloc(sizeof(TCGArgConstraint) * total_args);
|
233 | c896fe29 | bellard | sorted_args = qemu_malloc(sizeof(int) * total_args); |
234 | c896fe29 | bellard | |
235 | c896fe29 | bellard | for(op = 0; op < NB_OPS; op++) { |
236 | c896fe29 | bellard | def = &tcg_op_defs[op]; |
237 | c896fe29 | bellard | def->args_ct = args_ct; |
238 | c896fe29 | bellard | def->sorted_args = sorted_args; |
239 | c896fe29 | bellard | n = def->nb_iargs + def->nb_oargs; |
240 | c896fe29 | bellard | sorted_args += n; |
241 | c896fe29 | bellard | args_ct += n; |
242 | c896fe29 | bellard | } |
243 | c896fe29 | bellard | |
244 | c896fe29 | bellard | tcg_target_init(s); |
245 | b03cce8e | bellard | |
246 | b03cce8e | bellard | /* init global prologue and epilogue */
|
247 | b03cce8e | bellard | s->code_buf = code_gen_prologue; |
248 | b03cce8e | bellard | s->code_ptr = s->code_buf; |
249 | b03cce8e | bellard | tcg_target_qemu_prologue(s); |
250 | b03cce8e | bellard | flush_icache_range((unsigned long)s->code_buf, |
251 | b03cce8e | bellard | (unsigned long)s->code_ptr); |
252 | c896fe29 | bellard | } |
253 | c896fe29 | bellard | |
254 | c896fe29 | bellard | void tcg_set_frame(TCGContext *s, int reg, |
255 | c896fe29 | bellard | tcg_target_long start, tcg_target_long size) |
256 | c896fe29 | bellard | { |
257 | c896fe29 | bellard | s->frame_start = start; |
258 | c896fe29 | bellard | s->frame_end = start + size; |
259 | c896fe29 | bellard | s->frame_reg = reg; |
260 | c896fe29 | bellard | } |
261 | c896fe29 | bellard | |
262 | c896fe29 | bellard | void tcg_set_macro_func(TCGContext *s, TCGMacroFunc *func)
|
263 | c896fe29 | bellard | { |
264 | c896fe29 | bellard | s->macro_func = func; |
265 | c896fe29 | bellard | } |
266 | c896fe29 | bellard | |
267 | c896fe29 | bellard | void tcg_func_start(TCGContext *s)
|
268 | c896fe29 | bellard | { |
269 | c896fe29 | bellard | tcg_pool_reset(s); |
270 | c896fe29 | bellard | s->nb_temps = s->nb_globals; |
271 | c896fe29 | bellard | s->labels = tcg_malloc(sizeof(TCGLabel) * TCG_MAX_LABELS);
|
272 | c896fe29 | bellard | s->nb_labels = 0;
|
273 | c896fe29 | bellard | s->current_frame_offset = s->frame_start; |
274 | c896fe29 | bellard | |
275 | c896fe29 | bellard | gen_opc_ptr = gen_opc_buf; |
276 | c896fe29 | bellard | gen_opparam_ptr = gen_opparam_buf; |
277 | c896fe29 | bellard | } |
278 | c896fe29 | bellard | |
279 | c896fe29 | bellard | static inline void tcg_temp_alloc(TCGContext *s, int n) |
280 | c896fe29 | bellard | { |
281 | c896fe29 | bellard | if (n > TCG_MAX_TEMPS)
|
282 | c896fe29 | bellard | tcg_abort(); |
283 | c896fe29 | bellard | } |
284 | c896fe29 | bellard | |
285 | ac56dd48 | pbrook | TCGv tcg_global_reg_new(TCGType type, int reg, const char *name) |
286 | c896fe29 | bellard | { |
287 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
288 | c896fe29 | bellard | TCGTemp *ts; |
289 | c896fe29 | bellard | int idx;
|
290 | c896fe29 | bellard | |
291 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS == 32 |
292 | c896fe29 | bellard | if (type != TCG_TYPE_I32)
|
293 | c896fe29 | bellard | tcg_abort(); |
294 | c896fe29 | bellard | #endif
|
295 | c896fe29 | bellard | if (tcg_regset_test_reg(s->reserved_regs, reg))
|
296 | c896fe29 | bellard | tcg_abort(); |
297 | c896fe29 | bellard | idx = s->nb_globals; |
298 | c896fe29 | bellard | tcg_temp_alloc(s, s->nb_globals + 1);
|
299 | c896fe29 | bellard | ts = &s->temps[s->nb_globals]; |
300 | c896fe29 | bellard | ts->base_type = type; |
301 | c896fe29 | bellard | ts->type = type; |
302 | c896fe29 | bellard | ts->fixed_reg = 1;
|
303 | c896fe29 | bellard | ts->reg = reg; |
304 | c896fe29 | bellard | ts->val_type = TEMP_VAL_REG; |
305 | c896fe29 | bellard | ts->name = name; |
306 | c896fe29 | bellard | s->nb_globals++; |
307 | c896fe29 | bellard | tcg_regset_set_reg(s->reserved_regs, reg); |
308 | ac56dd48 | pbrook | return MAKE_TCGV(idx);
|
309 | c896fe29 | bellard | } |
310 | c896fe29 | bellard | |
311 | 6a8d7b76 | bellard | #if TCG_TARGET_REG_BITS == 32 |
312 | 6a8d7b76 | bellard | /* temporary hack to avoid register shortage for tcg_qemu_st64() */
|
313 | 6a8d7b76 | bellard | TCGv tcg_global_reg2_new_hack(TCGType type, int reg1, int reg2, |
314 | 6a8d7b76 | bellard | const char *name) |
315 | 6a8d7b76 | bellard | { |
316 | 6a8d7b76 | bellard | TCGContext *s = &tcg_ctx; |
317 | 6a8d7b76 | bellard | TCGTemp *ts; |
318 | 6a8d7b76 | bellard | int idx;
|
319 | 6a8d7b76 | bellard | char buf[64]; |
320 | 6a8d7b76 | bellard | |
321 | 6a8d7b76 | bellard | if (type != TCG_TYPE_I64)
|
322 | 6a8d7b76 | bellard | tcg_abort(); |
323 | 6a8d7b76 | bellard | idx = s->nb_globals; |
324 | 6a8d7b76 | bellard | tcg_temp_alloc(s, s->nb_globals + 2);
|
325 | 6a8d7b76 | bellard | ts = &s->temps[s->nb_globals]; |
326 | 6a8d7b76 | bellard | ts->base_type = type; |
327 | 6a8d7b76 | bellard | ts->type = TCG_TYPE_I32; |
328 | 6a8d7b76 | bellard | ts->fixed_reg = 1;
|
329 | 6a8d7b76 | bellard | ts->reg = reg1; |
330 | 6a8d7b76 | bellard | ts->val_type = TEMP_VAL_REG; |
331 | 6a8d7b76 | bellard | pstrcpy(buf, sizeof(buf), name);
|
332 | 6a8d7b76 | bellard | pstrcat(buf, sizeof(buf), "_0"); |
333 | 6a8d7b76 | bellard | ts->name = strdup(buf); |
334 | 6a8d7b76 | bellard | |
335 | 6a8d7b76 | bellard | ts++; |
336 | 6a8d7b76 | bellard | ts->base_type = type; |
337 | 6a8d7b76 | bellard | ts->type = TCG_TYPE_I32; |
338 | 6a8d7b76 | bellard | ts->fixed_reg = 1;
|
339 | 6a8d7b76 | bellard | ts->reg = reg2; |
340 | 6a8d7b76 | bellard | ts->val_type = TEMP_VAL_REG; |
341 | 6a8d7b76 | bellard | pstrcpy(buf, sizeof(buf), name);
|
342 | 6a8d7b76 | bellard | pstrcat(buf, sizeof(buf), "_1"); |
343 | 6a8d7b76 | bellard | ts->name = strdup(buf); |
344 | 6a8d7b76 | bellard | |
345 | 6a8d7b76 | bellard | s->nb_globals += 2;
|
346 | 6a8d7b76 | bellard | return MAKE_TCGV(idx);
|
347 | 6a8d7b76 | bellard | } |
348 | 6a8d7b76 | bellard | #endif
|
349 | 6a8d7b76 | bellard | |
350 | ac56dd48 | pbrook | TCGv tcg_global_mem_new(TCGType type, int reg, tcg_target_long offset,
|
351 | ac56dd48 | pbrook | const char *name) |
352 | c896fe29 | bellard | { |
353 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
354 | c896fe29 | bellard | TCGTemp *ts; |
355 | c896fe29 | bellard | int idx;
|
356 | c896fe29 | bellard | |
357 | c896fe29 | bellard | idx = s->nb_globals; |
358 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS == 32 |
359 | c896fe29 | bellard | if (type == TCG_TYPE_I64) {
|
360 | c896fe29 | bellard | char buf[64]; |
361 | c896fe29 | bellard | tcg_temp_alloc(s, s->nb_globals + 1);
|
362 | c896fe29 | bellard | ts = &s->temps[s->nb_globals]; |
363 | c896fe29 | bellard | ts->base_type = type; |
364 | c896fe29 | bellard | ts->type = TCG_TYPE_I32; |
365 | c896fe29 | bellard | ts->fixed_reg = 0;
|
366 | c896fe29 | bellard | ts->mem_allocated = 1;
|
367 | c896fe29 | bellard | ts->mem_reg = reg; |
368 | c896fe29 | bellard | #ifdef TCG_TARGET_WORDS_BIGENDIAN
|
369 | c896fe29 | bellard | ts->mem_offset = offset + 4;
|
370 | c896fe29 | bellard | #else
|
371 | c896fe29 | bellard | ts->mem_offset = offset; |
372 | c896fe29 | bellard | #endif
|
373 | c896fe29 | bellard | ts->val_type = TEMP_VAL_MEM; |
374 | c896fe29 | bellard | pstrcpy(buf, sizeof(buf), name);
|
375 | c896fe29 | bellard | pstrcat(buf, sizeof(buf), "_0"); |
376 | c896fe29 | bellard | ts->name = strdup(buf); |
377 | c896fe29 | bellard | ts++; |
378 | c896fe29 | bellard | |
379 | c896fe29 | bellard | ts->base_type = type; |
380 | c896fe29 | bellard | ts->type = TCG_TYPE_I32; |
381 | c896fe29 | bellard | ts->fixed_reg = 0;
|
382 | c896fe29 | bellard | ts->mem_allocated = 1;
|
383 | c896fe29 | bellard | ts->mem_reg = reg; |
384 | c896fe29 | bellard | #ifdef TCG_TARGET_WORDS_BIGENDIAN
|
385 | c896fe29 | bellard | ts->mem_offset = offset; |
386 | c896fe29 | bellard | #else
|
387 | c896fe29 | bellard | ts->mem_offset = offset + 4;
|
388 | c896fe29 | bellard | #endif
|
389 | c896fe29 | bellard | ts->val_type = TEMP_VAL_MEM; |
390 | c896fe29 | bellard | pstrcpy(buf, sizeof(buf), name);
|
391 | c896fe29 | bellard | pstrcat(buf, sizeof(buf), "_1"); |
392 | c896fe29 | bellard | ts->name = strdup(buf); |
393 | c896fe29 | bellard | |
394 | c896fe29 | bellard | s->nb_globals += 2;
|
395 | c896fe29 | bellard | } else
|
396 | c896fe29 | bellard | #endif
|
397 | c896fe29 | bellard | { |
398 | c896fe29 | bellard | tcg_temp_alloc(s, s->nb_globals + 1);
|
399 | c896fe29 | bellard | ts = &s->temps[s->nb_globals]; |
400 | c896fe29 | bellard | ts->base_type = type; |
401 | c896fe29 | bellard | ts->type = type; |
402 | c896fe29 | bellard | ts->fixed_reg = 0;
|
403 | c896fe29 | bellard | ts->mem_allocated = 1;
|
404 | c896fe29 | bellard | ts->mem_reg = reg; |
405 | c896fe29 | bellard | ts->mem_offset = offset; |
406 | c896fe29 | bellard | ts->val_type = TEMP_VAL_MEM; |
407 | c896fe29 | bellard | ts->name = name; |
408 | c896fe29 | bellard | s->nb_globals++; |
409 | c896fe29 | bellard | } |
410 | ac56dd48 | pbrook | return MAKE_TCGV(idx);
|
411 | c896fe29 | bellard | } |
412 | c896fe29 | bellard | |
413 | ac56dd48 | pbrook | TCGv tcg_temp_new(TCGType type) |
414 | c896fe29 | bellard | { |
415 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
416 | c896fe29 | bellard | TCGTemp *ts; |
417 | c896fe29 | bellard | int idx;
|
418 | c896fe29 | bellard | |
419 | c896fe29 | bellard | idx = s->nb_temps; |
420 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS == 32 |
421 | c896fe29 | bellard | if (type == TCG_TYPE_I64) {
|
422 | c896fe29 | bellard | tcg_temp_alloc(s, s->nb_temps + 1);
|
423 | c896fe29 | bellard | ts = &s->temps[s->nb_temps]; |
424 | c896fe29 | bellard | ts->base_type = type; |
425 | c896fe29 | bellard | ts->type = TCG_TYPE_I32; |
426 | 5ff9d6a4 | bellard | ts->fixed_reg = 0;
|
427 | c896fe29 | bellard | ts->val_type = TEMP_VAL_DEAD; |
428 | c896fe29 | bellard | ts->mem_allocated = 0;
|
429 | c896fe29 | bellard | ts->name = NULL;
|
430 | c896fe29 | bellard | ts++; |
431 | c896fe29 | bellard | ts->base_type = TCG_TYPE_I32; |
432 | c896fe29 | bellard | ts->type = TCG_TYPE_I32; |
433 | c896fe29 | bellard | ts->val_type = TEMP_VAL_DEAD; |
434 | 5ff9d6a4 | bellard | ts->fixed_reg = 0;
|
435 | c896fe29 | bellard | ts->mem_allocated = 0;
|
436 | c896fe29 | bellard | ts->name = NULL;
|
437 | c896fe29 | bellard | s->nb_temps += 2;
|
438 | c896fe29 | bellard | } else
|
439 | c896fe29 | bellard | #endif
|
440 | c896fe29 | bellard | { |
441 | c896fe29 | bellard | tcg_temp_alloc(s, s->nb_temps + 1);
|
442 | c896fe29 | bellard | ts = &s->temps[s->nb_temps]; |
443 | c896fe29 | bellard | ts->base_type = type; |
444 | c896fe29 | bellard | ts->type = type; |
445 | 5ff9d6a4 | bellard | ts->fixed_reg = 0;
|
446 | c896fe29 | bellard | ts->val_type = TEMP_VAL_DEAD; |
447 | c896fe29 | bellard | ts->mem_allocated = 0;
|
448 | c896fe29 | bellard | ts->name = NULL;
|
449 | c896fe29 | bellard | s->nb_temps++; |
450 | c896fe29 | bellard | } |
451 | ac56dd48 | pbrook | return MAKE_TCGV(idx);
|
452 | c896fe29 | bellard | } |
453 | c896fe29 | bellard | |
454 | ac56dd48 | pbrook | TCGv tcg_const_i32(int32_t val) |
455 | c896fe29 | bellard | { |
456 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
457 | c896fe29 | bellard | TCGTemp *ts; |
458 | c896fe29 | bellard | int idx;
|
459 | c896fe29 | bellard | |
460 | c896fe29 | bellard | idx = s->nb_temps; |
461 | c896fe29 | bellard | tcg_temp_alloc(s, idx + 1);
|
462 | c896fe29 | bellard | ts = &s->temps[idx]; |
463 | c896fe29 | bellard | ts->base_type = ts->type = TCG_TYPE_I32; |
464 | c896fe29 | bellard | ts->val_type = TEMP_VAL_CONST; |
465 | c896fe29 | bellard | ts->name = NULL;
|
466 | c896fe29 | bellard | ts->val = val; |
467 | c896fe29 | bellard | s->nb_temps++; |
468 | ac56dd48 | pbrook | return MAKE_TCGV(idx);
|
469 | c896fe29 | bellard | } |
470 | c896fe29 | bellard | |
471 | ac56dd48 | pbrook | TCGv tcg_const_i64(int64_t val) |
472 | c896fe29 | bellard | { |
473 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
474 | c896fe29 | bellard | TCGTemp *ts; |
475 | c896fe29 | bellard | int idx;
|
476 | c896fe29 | bellard | |
477 | c896fe29 | bellard | idx = s->nb_temps; |
478 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS == 32 |
479 | c896fe29 | bellard | tcg_temp_alloc(s, idx + 2);
|
480 | c896fe29 | bellard | ts = &s->temps[idx]; |
481 | c896fe29 | bellard | ts->base_type = TCG_TYPE_I64; |
482 | c896fe29 | bellard | ts->type = TCG_TYPE_I32; |
483 | c896fe29 | bellard | ts->val_type = TEMP_VAL_CONST; |
484 | c896fe29 | bellard | ts->name = NULL;
|
485 | c896fe29 | bellard | ts->val = val; |
486 | c896fe29 | bellard | ts++; |
487 | c896fe29 | bellard | ts->base_type = TCG_TYPE_I32; |
488 | c896fe29 | bellard | ts->type = TCG_TYPE_I32; |
489 | c896fe29 | bellard | ts->val_type = TEMP_VAL_CONST; |
490 | c896fe29 | bellard | ts->name = NULL;
|
491 | c896fe29 | bellard | ts->val = val >> 32;
|
492 | c896fe29 | bellard | s->nb_temps += 2;
|
493 | c896fe29 | bellard | #else
|
494 | c896fe29 | bellard | tcg_temp_alloc(s, idx + 1);
|
495 | c896fe29 | bellard | ts = &s->temps[idx]; |
496 | c896fe29 | bellard | ts->base_type = ts->type = TCG_TYPE_I64; |
497 | c896fe29 | bellard | ts->val_type = TEMP_VAL_CONST; |
498 | c896fe29 | bellard | ts->name = NULL;
|
499 | c896fe29 | bellard | ts->val = val; |
500 | c896fe29 | bellard | s->nb_temps++; |
501 | c896fe29 | bellard | #endif
|
502 | ac56dd48 | pbrook | return MAKE_TCGV(idx);
|
503 | c896fe29 | bellard | } |
504 | c896fe29 | bellard | |
505 | c896fe29 | bellard | void tcg_register_helper(void *func, const char *name) |
506 | c896fe29 | bellard | { |
507 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
508 | c896fe29 | bellard | int n;
|
509 | c896fe29 | bellard | if ((s->nb_helpers + 1) > s->allocated_helpers) { |
510 | c896fe29 | bellard | n = s->allocated_helpers; |
511 | c896fe29 | bellard | if (n == 0) { |
512 | c896fe29 | bellard | n = 4;
|
513 | c896fe29 | bellard | } else {
|
514 | c896fe29 | bellard | n *= 2;
|
515 | c896fe29 | bellard | } |
516 | c896fe29 | bellard | s->helpers = realloc(s->helpers, n * sizeof(TCGHelperInfo));
|
517 | c896fe29 | bellard | s->allocated_helpers = n; |
518 | c896fe29 | bellard | } |
519 | c896fe29 | bellard | s->helpers[s->nb_helpers].func = func; |
520 | c896fe29 | bellard | s->helpers[s->nb_helpers].name = name; |
521 | c896fe29 | bellard | s->nb_helpers++; |
522 | c896fe29 | bellard | } |
523 | c896fe29 | bellard | |
524 | c896fe29 | bellard | const char *tcg_helper_get_name(TCGContext *s, void *func) |
525 | c896fe29 | bellard | { |
526 | c896fe29 | bellard | int i;
|
527 | c896fe29 | bellard | |
528 | c896fe29 | bellard | for(i = 0; i < s->nb_helpers; i++) { |
529 | c896fe29 | bellard | if (s->helpers[i].func == func)
|
530 | c896fe29 | bellard | return s->helpers[i].name;
|
531 | c896fe29 | bellard | } |
532 | c896fe29 | bellard | return NULL; |
533 | c896fe29 | bellard | } |
534 | c896fe29 | bellard | |
535 | ac56dd48 | pbrook | static inline TCGType tcg_get_base_type(TCGContext *s, TCGv arg) |
536 | c896fe29 | bellard | { |
537 | ac56dd48 | pbrook | return s->temps[GET_TCGV(arg)].base_type;
|
538 | c896fe29 | bellard | } |
539 | c896fe29 | bellard | |
540 | ac56dd48 | pbrook | static void tcg_gen_call_internal(TCGContext *s, TCGv func, |
541 | c896fe29 | bellard | unsigned int flags, |
542 | ac56dd48 | pbrook | unsigned int nb_rets, const TCGv *rets, |
543 | ac56dd48 | pbrook | unsigned int nb_params, const TCGv *params) |
544 | c896fe29 | bellard | { |
545 | c896fe29 | bellard | int i;
|
546 | c896fe29 | bellard | *gen_opc_ptr++ = INDEX_op_call; |
547 | c896fe29 | bellard | *gen_opparam_ptr++ = (nb_rets << 16) | (nb_params + 1); |
548 | c896fe29 | bellard | for(i = 0; i < nb_rets; i++) { |
549 | ac56dd48 | pbrook | *gen_opparam_ptr++ = GET_TCGV(rets[i]); |
550 | c896fe29 | bellard | } |
551 | c896fe29 | bellard | for(i = 0; i < nb_params; i++) { |
552 | ac56dd48 | pbrook | *gen_opparam_ptr++ = GET_TCGV(params[i]); |
553 | c896fe29 | bellard | } |
554 | ac56dd48 | pbrook | *gen_opparam_ptr++ = GET_TCGV(func); |
555 | c896fe29 | bellard | |
556 | c896fe29 | bellard | *gen_opparam_ptr++ = flags; |
557 | c896fe29 | bellard | /* total parameters, needed to go backward in the instruction stream */
|
558 | c896fe29 | bellard | *gen_opparam_ptr++ = 1 + nb_rets + nb_params + 3; |
559 | c896fe29 | bellard | } |
560 | c896fe29 | bellard | |
561 | c896fe29 | bellard | |
562 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS < 64 |
563 | c896fe29 | bellard | /* Note: we convert the 64 bit args to 32 bit */
|
564 | ac56dd48 | pbrook | void tcg_gen_call(TCGContext *s, TCGv func, unsigned int flags, |
565 | ac56dd48 | pbrook | unsigned int nb_rets, const TCGv *rets, |
566 | ac56dd48 | pbrook | unsigned int nb_params, const TCGv *args1) |
567 | c896fe29 | bellard | { |
568 | ac56dd48 | pbrook | TCGv ret, *args2, rets_2[2], arg;
|
569 | c896fe29 | bellard | int j, i, call_type;
|
570 | c896fe29 | bellard | |
571 | c896fe29 | bellard | if (nb_rets == 1) { |
572 | c896fe29 | bellard | ret = rets[0];
|
573 | c896fe29 | bellard | if (tcg_get_base_type(s, ret) == TCG_TYPE_I64) {
|
574 | c896fe29 | bellard | nb_rets = 2;
|
575 | c896fe29 | bellard | rets_2[0] = ret;
|
576 | ac56dd48 | pbrook | rets_2[1] = TCGV_HIGH(ret);
|
577 | c896fe29 | bellard | rets = rets_2; |
578 | c896fe29 | bellard | } |
579 | c896fe29 | bellard | } |
580 | ac56dd48 | pbrook | args2 = alloca((nb_params * 2) * sizeof(TCGv)); |
581 | c896fe29 | bellard | j = 0;
|
582 | c896fe29 | bellard | call_type = (flags & TCG_CALL_TYPE_MASK); |
583 | c896fe29 | bellard | for(i = 0; i < nb_params; i++) { |
584 | c896fe29 | bellard | arg = args1[i]; |
585 | c896fe29 | bellard | if (tcg_get_base_type(s, arg) == TCG_TYPE_I64) {
|
586 | c896fe29 | bellard | #ifdef TCG_TARGET_I386
|
587 | c896fe29 | bellard | /* REGPARM case: if the third parameter is 64 bit, it is
|
588 | c896fe29 | bellard | allocated on the stack */
|
589 | c896fe29 | bellard | if (j == 2 && call_type == TCG_CALL_TYPE_REGPARM) { |
590 | c896fe29 | bellard | call_type = TCG_CALL_TYPE_REGPARM_2; |
591 | c896fe29 | bellard | flags = (flags & ~TCG_CALL_TYPE_MASK) | call_type; |
592 | c896fe29 | bellard | } |
593 | c896fe29 | bellard | args2[j++] = arg; |
594 | ac56dd48 | pbrook | args2[j++] = TCGV_HIGH(arg); |
595 | c896fe29 | bellard | #else
|
596 | c896fe29 | bellard | #ifdef TCG_TARGET_WORDS_BIGENDIAN
|
597 | a0d69e00 | blueswir1 | args2[j++] = TCGV_HIGH(arg); |
598 | c896fe29 | bellard | args2[j++] = arg; |
599 | c896fe29 | bellard | #else
|
600 | c896fe29 | bellard | args2[j++] = arg; |
601 | ac56dd48 | pbrook | args2[j++] = TCGV_HIGH(arg); |
602 | c896fe29 | bellard | #endif
|
603 | c896fe29 | bellard | #endif
|
604 | c896fe29 | bellard | } else {
|
605 | c896fe29 | bellard | args2[j++] = arg; |
606 | c896fe29 | bellard | } |
607 | c896fe29 | bellard | } |
608 | c896fe29 | bellard | tcg_gen_call_internal(s, func, flags, |
609 | c896fe29 | bellard | nb_rets, rets, j, args2); |
610 | c896fe29 | bellard | } |
611 | c896fe29 | bellard | #else
|
612 | ac56dd48 | pbrook | void tcg_gen_call(TCGContext *s, TCGv func, unsigned int flags, |
613 | ac56dd48 | pbrook | unsigned int nb_rets, const TCGv *rets, |
614 | ac56dd48 | pbrook | unsigned int nb_params, const TCGv *args1) |
615 | c896fe29 | bellard | { |
616 | c896fe29 | bellard | tcg_gen_call_internal(s, func, flags, |
617 | c896fe29 | bellard | nb_rets, rets, nb_params, args1); |
618 | c896fe29 | bellard | } |
619 | c896fe29 | bellard | #endif
|
620 | c896fe29 | bellard | |
621 | ac56dd48 | pbrook | #if TCG_TARGET_REG_BITS == 32 |
622 | ac56dd48 | pbrook | void tcg_gen_shifti_i64(TCGv ret, TCGv arg1,
|
623 | c896fe29 | bellard | int c, int right, int arith) |
624 | c896fe29 | bellard | { |
625 | c896fe29 | bellard | if (c == 0) |
626 | c896fe29 | bellard | return;
|
627 | c896fe29 | bellard | if (c >= 32) { |
628 | c896fe29 | bellard | c -= 32;
|
629 | c896fe29 | bellard | if (right) {
|
630 | c896fe29 | bellard | if (arith) {
|
631 | ac56dd48 | pbrook | tcg_gen_sari_i32(ret, TCGV_HIGH(arg1), c); |
632 | ac56dd48 | pbrook | tcg_gen_sari_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1), 31);
|
633 | c896fe29 | bellard | } else {
|
634 | ac56dd48 | pbrook | tcg_gen_shri_i32(ret, TCGV_HIGH(arg1), c); |
635 | ac56dd48 | pbrook | tcg_gen_movi_i32(TCGV_HIGH(ret), 0);
|
636 | c896fe29 | bellard | } |
637 | c896fe29 | bellard | } else {
|
638 | ac56dd48 | pbrook | tcg_gen_shli_i32(TCGV_HIGH(ret), arg1, c); |
639 | c896fe29 | bellard | tcg_gen_movi_i32(ret, 0);
|
640 | c896fe29 | bellard | } |
641 | c896fe29 | bellard | } else {
|
642 | ac56dd48 | pbrook | TCGv t0, t1; |
643 | c896fe29 | bellard | |
644 | c896fe29 | bellard | t0 = tcg_temp_new(TCG_TYPE_I32); |
645 | c896fe29 | bellard | t1 = tcg_temp_new(TCG_TYPE_I32); |
646 | c896fe29 | bellard | if (right) {
|
647 | ac56dd48 | pbrook | tcg_gen_shli_i32(t0, TCGV_HIGH(arg1), 32 - c);
|
648 | c896fe29 | bellard | if (arith)
|
649 | ac56dd48 | pbrook | tcg_gen_sari_i32(t1, TCGV_HIGH(arg1), c); |
650 | c896fe29 | bellard | else
|
651 | ac56dd48 | pbrook | tcg_gen_shri_i32(t1, TCGV_HIGH(arg1), c); |
652 | c896fe29 | bellard | tcg_gen_shri_i32(ret, arg1, c); |
653 | c896fe29 | bellard | tcg_gen_or_i32(ret, ret, t0); |
654 | ac56dd48 | pbrook | tcg_gen_mov_i32(TCGV_HIGH(ret), t1); |
655 | c896fe29 | bellard | } else {
|
656 | c896fe29 | bellard | tcg_gen_shri_i32(t0, arg1, 32 - c);
|
657 | c896fe29 | bellard | /* Note: ret can be the same as arg1, so we use t1 */
|
658 | c896fe29 | bellard | tcg_gen_shli_i32(t1, arg1, c); |
659 | ac56dd48 | pbrook | tcg_gen_shli_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1), c); |
660 | ac56dd48 | pbrook | tcg_gen_or_i32(TCGV_HIGH(ret), TCGV_HIGH(ret), t0); |
661 | c896fe29 | bellard | tcg_gen_mov_i32(ret, t1); |
662 | c896fe29 | bellard | } |
663 | c896fe29 | bellard | } |
664 | c896fe29 | bellard | } |
665 | ac56dd48 | pbrook | #endif
|
666 | c896fe29 | bellard | |
667 | c896fe29 | bellard | void tcg_reg_alloc_start(TCGContext *s)
|
668 | c896fe29 | bellard | { |
669 | c896fe29 | bellard | int i;
|
670 | c896fe29 | bellard | TCGTemp *ts; |
671 | c896fe29 | bellard | for(i = 0; i < s->nb_globals; i++) { |
672 | c896fe29 | bellard | ts = &s->temps[i]; |
673 | c896fe29 | bellard | if (ts->fixed_reg) {
|
674 | c896fe29 | bellard | ts->val_type = TEMP_VAL_REG; |
675 | c896fe29 | bellard | } else {
|
676 | c896fe29 | bellard | ts->val_type = TEMP_VAL_MEM; |
677 | c896fe29 | bellard | } |
678 | c896fe29 | bellard | } |
679 | c896fe29 | bellard | for(i = 0; i < TCG_TARGET_NB_REGS; i++) { |
680 | c896fe29 | bellard | s->reg_to_temp[i] = -1;
|
681 | c896fe29 | bellard | } |
682 | c896fe29 | bellard | } |
683 | c896fe29 | bellard | |
684 | ac56dd48 | pbrook | static char *tcg_get_arg_str_idx(TCGContext *s, char *buf, int buf_size, |
685 | ac56dd48 | pbrook | int idx)
|
686 | c896fe29 | bellard | { |
687 | c896fe29 | bellard | TCGTemp *ts; |
688 | ac56dd48 | pbrook | |
689 | ac56dd48 | pbrook | ts = &s->temps[idx]; |
690 | ac56dd48 | pbrook | if (idx < s->nb_globals) {
|
691 | ac56dd48 | pbrook | pstrcpy(buf, buf_size, ts->name); |
692 | c896fe29 | bellard | } else {
|
693 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_CONST) {
|
694 | c896fe29 | bellard | snprintf(buf, buf_size, "$0x%" TCG_PRIlx , ts->val);
|
695 | c896fe29 | bellard | } else {
|
696 | ac56dd48 | pbrook | snprintf(buf, buf_size, "tmp%d", idx - s->nb_globals);
|
697 | c896fe29 | bellard | } |
698 | c896fe29 | bellard | } |
699 | c896fe29 | bellard | return buf;
|
700 | c896fe29 | bellard | } |
701 | c896fe29 | bellard | |
702 | ac56dd48 | pbrook | char *tcg_get_arg_str(TCGContext *s, char *buf, int buf_size, TCGv arg) |
703 | ac56dd48 | pbrook | { |
704 | ac56dd48 | pbrook | return tcg_get_arg_str_idx(s, buf, buf_size, GET_TCGV(arg));
|
705 | ac56dd48 | pbrook | } |
706 | ac56dd48 | pbrook | |
707 | c896fe29 | bellard | void tcg_dump_ops(TCGContext *s, FILE *outfile)
|
708 | c896fe29 | bellard | { |
709 | c896fe29 | bellard | const uint16_t *opc_ptr;
|
710 | c896fe29 | bellard | const TCGArg *args;
|
711 | c896fe29 | bellard | TCGArg arg; |
712 | c896fe29 | bellard | int c, i, k, nb_oargs, nb_iargs, nb_cargs;
|
713 | c896fe29 | bellard | const TCGOpDef *def;
|
714 | c896fe29 | bellard | char buf[128]; |
715 | c896fe29 | bellard | |
716 | c896fe29 | bellard | opc_ptr = gen_opc_buf; |
717 | c896fe29 | bellard | args = gen_opparam_buf; |
718 | c896fe29 | bellard | while (opc_ptr < gen_opc_ptr) {
|
719 | c896fe29 | bellard | c = *opc_ptr++; |
720 | c896fe29 | bellard | def = &tcg_op_defs[c]; |
721 | c896fe29 | bellard | fprintf(outfile, " %s ", def->name);
|
722 | c896fe29 | bellard | if (c == INDEX_op_call) {
|
723 | c896fe29 | bellard | TCGArg arg; |
724 | c896fe29 | bellard | /* variable number of arguments */
|
725 | c896fe29 | bellard | arg = *args++; |
726 | c896fe29 | bellard | nb_oargs = arg >> 16;
|
727 | c896fe29 | bellard | nb_iargs = arg & 0xffff;
|
728 | c896fe29 | bellard | nb_cargs = def->nb_cargs; |
729 | c896fe29 | bellard | |
730 | b03cce8e | bellard | /* function name */
|
731 | c896fe29 | bellard | /* XXX: dump helper name for call */
|
732 | ac56dd48 | pbrook | fprintf(outfile, "%s",
|
733 | b03cce8e | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[nb_oargs + nb_iargs - 1])); |
734 | b03cce8e | bellard | /* flags */
|
735 | b03cce8e | bellard | fprintf(outfile, ",$0x%" TCG_PRIlx,
|
736 | b03cce8e | bellard | args[nb_oargs + nb_iargs]); |
737 | b03cce8e | bellard | /* nb out args */
|
738 | b03cce8e | bellard | fprintf(outfile, ",$%d", nb_oargs);
|
739 | b03cce8e | bellard | for(i = 0; i < nb_oargs; i++) { |
740 | b03cce8e | bellard | fprintf(outfile, ",");
|
741 | b03cce8e | bellard | fprintf(outfile, "%s",
|
742 | b03cce8e | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[i]));
|
743 | b03cce8e | bellard | } |
744 | b03cce8e | bellard | for(i = 0; i < (nb_iargs - 1); i++) { |
745 | c896fe29 | bellard | fprintf(outfile, ",");
|
746 | b03cce8e | bellard | fprintf(outfile, "%s",
|
747 | b03cce8e | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[nb_oargs + i]));
|
748 | b03cce8e | bellard | } |
749 | b03cce8e | bellard | } else {
|
750 | b03cce8e | bellard | if (c == INDEX_op_nopn) {
|
751 | b03cce8e | bellard | /* variable number of arguments */
|
752 | b03cce8e | bellard | nb_cargs = *args; |
753 | b03cce8e | bellard | nb_oargs = 0;
|
754 | b03cce8e | bellard | nb_iargs = 0;
|
755 | b03cce8e | bellard | } else {
|
756 | b03cce8e | bellard | nb_oargs = def->nb_oargs; |
757 | b03cce8e | bellard | nb_iargs = def->nb_iargs; |
758 | b03cce8e | bellard | nb_cargs = def->nb_cargs; |
759 | b03cce8e | bellard | } |
760 | b03cce8e | bellard | |
761 | b03cce8e | bellard | k = 0;
|
762 | b03cce8e | bellard | for(i = 0; i < nb_oargs; i++) { |
763 | b03cce8e | bellard | if (k != 0) |
764 | b03cce8e | bellard | fprintf(outfile, ",");
|
765 | b03cce8e | bellard | fprintf(outfile, "%s",
|
766 | b03cce8e | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[k++]));
|
767 | b03cce8e | bellard | } |
768 | b03cce8e | bellard | for(i = 0; i < nb_iargs; i++) { |
769 | b03cce8e | bellard | if (k != 0) |
770 | b03cce8e | bellard | fprintf(outfile, ",");
|
771 | b03cce8e | bellard | fprintf(outfile, "%s",
|
772 | b03cce8e | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[k++]));
|
773 | b03cce8e | bellard | } |
774 | b03cce8e | bellard | for(i = 0; i < nb_cargs; i++) { |
775 | b03cce8e | bellard | if (k != 0) |
776 | b03cce8e | bellard | fprintf(outfile, ",");
|
777 | b03cce8e | bellard | arg = args[k++]; |
778 | b03cce8e | bellard | fprintf(outfile, "$0x%" TCG_PRIlx, arg);
|
779 | b03cce8e | bellard | } |
780 | c896fe29 | bellard | } |
781 | c896fe29 | bellard | fprintf(outfile, "\n");
|
782 | c896fe29 | bellard | args += nb_iargs + nb_oargs + nb_cargs; |
783 | c896fe29 | bellard | } |
784 | c896fe29 | bellard | } |
785 | c896fe29 | bellard | |
786 | c896fe29 | bellard | /* we give more priority to constraints with less registers */
|
787 | c896fe29 | bellard | static int get_constraint_priority(const TCGOpDef *def, int k) |
788 | c896fe29 | bellard | { |
789 | c896fe29 | bellard | const TCGArgConstraint *arg_ct;
|
790 | c896fe29 | bellard | |
791 | c896fe29 | bellard | int i, n;
|
792 | c896fe29 | bellard | arg_ct = &def->args_ct[k]; |
793 | c896fe29 | bellard | if (arg_ct->ct & TCG_CT_ALIAS) {
|
794 | c896fe29 | bellard | /* an alias is equivalent to a single register */
|
795 | c896fe29 | bellard | n = 1;
|
796 | c896fe29 | bellard | } else {
|
797 | c896fe29 | bellard | if (!(arg_ct->ct & TCG_CT_REG))
|
798 | c896fe29 | bellard | return 0; |
799 | c896fe29 | bellard | n = 0;
|
800 | c896fe29 | bellard | for(i = 0; i < TCG_TARGET_NB_REGS; i++) { |
801 | c896fe29 | bellard | if (tcg_regset_test_reg(arg_ct->u.regs, i))
|
802 | c896fe29 | bellard | n++; |
803 | c896fe29 | bellard | } |
804 | c896fe29 | bellard | } |
805 | c896fe29 | bellard | return TCG_TARGET_NB_REGS - n + 1; |
806 | c896fe29 | bellard | } |
807 | c896fe29 | bellard | |
808 | c896fe29 | bellard | /* sort from highest priority to lowest */
|
809 | c896fe29 | bellard | static void sort_constraints(TCGOpDef *def, int start, int n) |
810 | c896fe29 | bellard | { |
811 | c896fe29 | bellard | int i, j, p1, p2, tmp;
|
812 | c896fe29 | bellard | |
813 | c896fe29 | bellard | for(i = 0; i < n; i++) |
814 | c896fe29 | bellard | def->sorted_args[start + i] = start + i; |
815 | c896fe29 | bellard | if (n <= 1) |
816 | c896fe29 | bellard | return;
|
817 | c896fe29 | bellard | for(i = 0; i < n - 1; i++) { |
818 | c896fe29 | bellard | for(j = i + 1; j < n; j++) { |
819 | c896fe29 | bellard | p1 = get_constraint_priority(def, def->sorted_args[start + i]); |
820 | c896fe29 | bellard | p2 = get_constraint_priority(def, def->sorted_args[start + j]); |
821 | c896fe29 | bellard | if (p1 < p2) {
|
822 | c896fe29 | bellard | tmp = def->sorted_args[start + i]; |
823 | c896fe29 | bellard | def->sorted_args[start + i] = def->sorted_args[start + j]; |
824 | c896fe29 | bellard | def->sorted_args[start + j] = tmp; |
825 | c896fe29 | bellard | } |
826 | c896fe29 | bellard | } |
827 | c896fe29 | bellard | } |
828 | c896fe29 | bellard | } |
829 | c896fe29 | bellard | |
830 | c896fe29 | bellard | void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs) |
831 | c896fe29 | bellard | { |
832 | c896fe29 | bellard | int op;
|
833 | c896fe29 | bellard | TCGOpDef *def; |
834 | c896fe29 | bellard | const char *ct_str; |
835 | c896fe29 | bellard | int i, nb_args;
|
836 | c896fe29 | bellard | |
837 | c896fe29 | bellard | for(;;) {
|
838 | c896fe29 | bellard | if (tdefs->op < 0) |
839 | c896fe29 | bellard | break;
|
840 | c896fe29 | bellard | op = tdefs->op; |
841 | c896fe29 | bellard | assert(op >= 0 && op < NB_OPS);
|
842 | c896fe29 | bellard | def = &tcg_op_defs[op]; |
843 | c896fe29 | bellard | nb_args = def->nb_iargs + def->nb_oargs; |
844 | c896fe29 | bellard | for(i = 0; i < nb_args; i++) { |
845 | c896fe29 | bellard | ct_str = tdefs->args_ct_str[i]; |
846 | c896fe29 | bellard | tcg_regset_clear(def->args_ct[i].u.regs); |
847 | c896fe29 | bellard | def->args_ct[i].ct = 0;
|
848 | c896fe29 | bellard | if (ct_str[0] >= '0' && ct_str[0] <= '9') { |
849 | c896fe29 | bellard | int oarg;
|
850 | c896fe29 | bellard | oarg = ct_str[0] - '0'; |
851 | c896fe29 | bellard | assert(oarg < def->nb_oargs); |
852 | c896fe29 | bellard | assert(def->args_ct[oarg].ct & TCG_CT_REG); |
853 | c896fe29 | bellard | /* TCG_CT_ALIAS is for the output arguments. The input
|
854 | 5ff9d6a4 | bellard | argument is tagged with TCG_CT_IALIAS. */
|
855 | c896fe29 | bellard | def->args_ct[i] = def->args_ct[oarg]; |
856 | 5ff9d6a4 | bellard | def->args_ct[oarg].ct = TCG_CT_ALIAS; |
857 | 5ff9d6a4 | bellard | def->args_ct[oarg].alias_index = i; |
858 | c896fe29 | bellard | def->args_ct[i].ct |= TCG_CT_IALIAS; |
859 | 5ff9d6a4 | bellard | def->args_ct[i].alias_index = oarg; |
860 | c896fe29 | bellard | } else {
|
861 | c896fe29 | bellard | for(;;) {
|
862 | c896fe29 | bellard | if (*ct_str == '\0') |
863 | c896fe29 | bellard | break;
|
864 | c896fe29 | bellard | switch(*ct_str) {
|
865 | c896fe29 | bellard | case 'i': |
866 | c896fe29 | bellard | def->args_ct[i].ct |= TCG_CT_CONST; |
867 | c896fe29 | bellard | ct_str++; |
868 | c896fe29 | bellard | break;
|
869 | c896fe29 | bellard | default:
|
870 | c896fe29 | bellard | if (target_parse_constraint(&def->args_ct[i], &ct_str) < 0) { |
871 | c896fe29 | bellard | fprintf(stderr, "Invalid constraint '%s' for arg %d of operation '%s'\n",
|
872 | c896fe29 | bellard | ct_str, i, def->name); |
873 | c896fe29 | bellard | exit(1);
|
874 | c896fe29 | bellard | } |
875 | c896fe29 | bellard | } |
876 | c896fe29 | bellard | } |
877 | c896fe29 | bellard | } |
878 | c896fe29 | bellard | } |
879 | c896fe29 | bellard | |
880 | c896fe29 | bellard | /* sort the constraints (XXX: this is just an heuristic) */
|
881 | c896fe29 | bellard | sort_constraints(def, 0, def->nb_oargs);
|
882 | c896fe29 | bellard | sort_constraints(def, def->nb_oargs, def->nb_iargs); |
883 | c896fe29 | bellard | |
884 | c896fe29 | bellard | #if 0
|
885 | c896fe29 | bellard | {
|
886 | c896fe29 | bellard | int i;
|
887 | c896fe29 | bellard | |
888 | c896fe29 | bellard | printf("%s: sorted=", def->name);
|
889 | c896fe29 | bellard | for(i = 0; i < def->nb_oargs + def->nb_iargs; i++)
|
890 | c896fe29 | bellard | printf(" %d", def->sorted_args[i]);
|
891 | c896fe29 | bellard | printf("\n");
|
892 | c896fe29 | bellard | }
|
893 | c896fe29 | bellard | #endif
|
894 | c896fe29 | bellard | tdefs++; |
895 | c896fe29 | bellard | } |
896 | c896fe29 | bellard | |
897 | c896fe29 | bellard | } |
898 | c896fe29 | bellard | |
899 | c896fe29 | bellard | #ifdef USE_LIVENESS_ANALYSIS
|
900 | c896fe29 | bellard | |
901 | c896fe29 | bellard | /* set a nop for an operation using 'nb_args' */
|
902 | c896fe29 | bellard | static inline void tcg_set_nop(TCGContext *s, uint16_t *opc_ptr, |
903 | c896fe29 | bellard | TCGArg *args, int nb_args)
|
904 | c896fe29 | bellard | { |
905 | c896fe29 | bellard | if (nb_args == 0) { |
906 | c896fe29 | bellard | *opc_ptr = INDEX_op_nop; |
907 | c896fe29 | bellard | } else {
|
908 | c896fe29 | bellard | *opc_ptr = INDEX_op_nopn; |
909 | c896fe29 | bellard | args[0] = nb_args;
|
910 | c896fe29 | bellard | args[nb_args - 1] = nb_args;
|
911 | c896fe29 | bellard | } |
912 | c896fe29 | bellard | } |
913 | c896fe29 | bellard | |
914 | c896fe29 | bellard | /* liveness analysis: end of basic block: globals are live, temps are dead */
|
915 | c896fe29 | bellard | static inline void tcg_la_bb_end(TCGContext *s, uint8_t *dead_temps) |
916 | c896fe29 | bellard | { |
917 | c896fe29 | bellard | memset(dead_temps, 0, s->nb_globals);
|
918 | c896fe29 | bellard | memset(dead_temps + s->nb_globals, 1, s->nb_temps - s->nb_globals);
|
919 | c896fe29 | bellard | } |
920 | c896fe29 | bellard | |
921 | c896fe29 | bellard | /* Liveness analysis : update the opc_dead_iargs array to tell if a
|
922 | c896fe29 | bellard | given input arguments is dead. Instructions updating dead
|
923 | c896fe29 | bellard | temporaries are removed. */
|
924 | c896fe29 | bellard | void tcg_liveness_analysis(TCGContext *s)
|
925 | c896fe29 | bellard | { |
926 | c896fe29 | bellard | int i, op_index, op, nb_args, nb_iargs, nb_oargs, arg, nb_ops;
|
927 | c896fe29 | bellard | TCGArg *args; |
928 | c896fe29 | bellard | const TCGOpDef *def;
|
929 | c896fe29 | bellard | uint8_t *dead_temps; |
930 | c896fe29 | bellard | unsigned int dead_iargs; |
931 | c896fe29 | bellard | |
932 | c896fe29 | bellard | gen_opc_ptr++; /* skip end */
|
933 | c896fe29 | bellard | |
934 | c896fe29 | bellard | nb_ops = gen_opc_ptr - gen_opc_buf; |
935 | c896fe29 | bellard | |
936 | c896fe29 | bellard | /* XXX: make it really dynamic */
|
937 | c896fe29 | bellard | s->op_dead_iargs = tcg_malloc(OPC_BUF_SIZE * sizeof(uint16_t));
|
938 | c896fe29 | bellard | |
939 | c896fe29 | bellard | dead_temps = tcg_malloc(s->nb_temps); |
940 | c896fe29 | bellard | memset(dead_temps, 1, s->nb_temps);
|
941 | c896fe29 | bellard | |
942 | c896fe29 | bellard | args = gen_opparam_ptr; |
943 | c896fe29 | bellard | op_index = nb_ops - 1;
|
944 | c896fe29 | bellard | while (op_index >= 0) { |
945 | c896fe29 | bellard | op = gen_opc_buf[op_index]; |
946 | c896fe29 | bellard | def = &tcg_op_defs[op]; |
947 | c896fe29 | bellard | switch(op) {
|
948 | c896fe29 | bellard | case INDEX_op_call:
|
949 | c896fe29 | bellard | nb_args = args[-1];
|
950 | c896fe29 | bellard | args -= nb_args; |
951 | c896fe29 | bellard | nb_iargs = args[0] & 0xffff; |
952 | c896fe29 | bellard | nb_oargs = args[0] >> 16; |
953 | c896fe29 | bellard | args++; |
954 | c896fe29 | bellard | |
955 | c896fe29 | bellard | /* output args are dead */
|
956 | c896fe29 | bellard | for(i = 0; i < nb_oargs; i++) { |
957 | c896fe29 | bellard | arg = args[i]; |
958 | c896fe29 | bellard | dead_temps[arg] = 1;
|
959 | c896fe29 | bellard | } |
960 | c896fe29 | bellard | |
961 | c896fe29 | bellard | /* globals are live (they may be used by the call) */
|
962 | c896fe29 | bellard | memset(dead_temps, 0, s->nb_globals);
|
963 | c896fe29 | bellard | |
964 | c896fe29 | bellard | /* input args are live */
|
965 | c896fe29 | bellard | dead_iargs = 0;
|
966 | c896fe29 | bellard | for(i = 0; i < nb_iargs; i++) { |
967 | c896fe29 | bellard | arg = args[i + nb_oargs]; |
968 | c896fe29 | bellard | if (dead_temps[arg]) {
|
969 | c896fe29 | bellard | dead_iargs |= (1 << i);
|
970 | c896fe29 | bellard | } |
971 | c896fe29 | bellard | dead_temps[arg] = 0;
|
972 | c896fe29 | bellard | } |
973 | c896fe29 | bellard | s->op_dead_iargs[op_index] = dead_iargs; |
974 | c896fe29 | bellard | args--; |
975 | c896fe29 | bellard | break;
|
976 | c896fe29 | bellard | case INDEX_op_set_label:
|
977 | c896fe29 | bellard | args--; |
978 | c896fe29 | bellard | /* mark end of basic block */
|
979 | c896fe29 | bellard | tcg_la_bb_end(s, dead_temps); |
980 | c896fe29 | bellard | break;
|
981 | c896fe29 | bellard | case INDEX_op_nopn:
|
982 | c896fe29 | bellard | nb_args = args[-1];
|
983 | c896fe29 | bellard | args -= nb_args; |
984 | c896fe29 | bellard | break;
|
985 | 5ff9d6a4 | bellard | case INDEX_op_discard:
|
986 | 5ff9d6a4 | bellard | args--; |
987 | 5ff9d6a4 | bellard | /* mark the temporary as dead */
|
988 | 5ff9d6a4 | bellard | dead_temps[args[0]] = 1; |
989 | 5ff9d6a4 | bellard | break;
|
990 | c896fe29 | bellard | case INDEX_op_macro_2:
|
991 | c896fe29 | bellard | { |
992 | c896fe29 | bellard | int dead_args[2], macro_id; |
993 | c896fe29 | bellard | int saved_op_index, saved_arg_index;
|
994 | c896fe29 | bellard | int macro_op_index, macro_arg_index;
|
995 | c896fe29 | bellard | int macro_end_op_index, macro_end_arg_index;
|
996 | c896fe29 | bellard | int last_nb_temps;
|
997 | c896fe29 | bellard | |
998 | c896fe29 | bellard | nb_args = 3;
|
999 | c896fe29 | bellard | args -= nb_args; |
1000 | c896fe29 | bellard | dead_args[0] = dead_temps[args[0]]; |
1001 | c896fe29 | bellard | dead_args[1] = dead_temps[args[1]]; |
1002 | c896fe29 | bellard | macro_id = args[2];
|
1003 | c896fe29 | bellard | |
1004 | c896fe29 | bellard | /* call the macro function which generate code
|
1005 | c896fe29 | bellard | depending on the live outputs */
|
1006 | c896fe29 | bellard | saved_op_index = op_index; |
1007 | c896fe29 | bellard | saved_arg_index = args - gen_opparam_buf; |
1008 | c896fe29 | bellard | |
1009 | c896fe29 | bellard | /* add a macro start instruction */
|
1010 | c896fe29 | bellard | *gen_opc_ptr++ = INDEX_op_macro_start; |
1011 | c896fe29 | bellard | *gen_opparam_ptr++ = saved_op_index; |
1012 | c896fe29 | bellard | *gen_opparam_ptr++ = saved_arg_index; |
1013 | c896fe29 | bellard | |
1014 | c896fe29 | bellard | macro_op_index = gen_opc_ptr - gen_opc_buf; |
1015 | c896fe29 | bellard | macro_arg_index = gen_opparam_ptr - gen_opparam_buf; |
1016 | c896fe29 | bellard | |
1017 | c896fe29 | bellard | last_nb_temps = s->nb_temps; |
1018 | c896fe29 | bellard | |
1019 | c896fe29 | bellard | s->macro_func(s, macro_id, dead_args); |
1020 | c896fe29 | bellard | |
1021 | c896fe29 | bellard | /* realloc temp info (XXX: make it faster) */
|
1022 | c896fe29 | bellard | if (s->nb_temps > last_nb_temps) {
|
1023 | c896fe29 | bellard | uint8_t *new_dead_temps; |
1024 | c896fe29 | bellard | |
1025 | c896fe29 | bellard | new_dead_temps = tcg_malloc(s->nb_temps); |
1026 | c896fe29 | bellard | memcpy(new_dead_temps, dead_temps, last_nb_temps); |
1027 | c896fe29 | bellard | memset(new_dead_temps + last_nb_temps, 1,
|
1028 | c896fe29 | bellard | s->nb_temps - last_nb_temps); |
1029 | c896fe29 | bellard | dead_temps = new_dead_temps; |
1030 | c896fe29 | bellard | } |
1031 | c896fe29 | bellard | |
1032 | c896fe29 | bellard | macro_end_op_index = gen_opc_ptr - gen_opc_buf; |
1033 | c896fe29 | bellard | macro_end_arg_index = gen_opparam_ptr - gen_opparam_buf; |
1034 | c896fe29 | bellard | |
1035 | c896fe29 | bellard | /* end of macro: add a goto to the next instruction */
|
1036 | c896fe29 | bellard | *gen_opc_ptr++ = INDEX_op_macro_end; |
1037 | c896fe29 | bellard | *gen_opparam_ptr++ = op_index + 1;
|
1038 | c896fe29 | bellard | *gen_opparam_ptr++ = saved_arg_index + nb_args; |
1039 | c896fe29 | bellard | |
1040 | c896fe29 | bellard | /* modify the macro operation to be a macro_goto */
|
1041 | c896fe29 | bellard | gen_opc_buf[op_index] = INDEX_op_macro_goto; |
1042 | c896fe29 | bellard | args[0] = macro_op_index;
|
1043 | c896fe29 | bellard | args[1] = macro_arg_index;
|
1044 | c896fe29 | bellard | args[2] = 0; /* dummy third arg to match the |
1045 | c896fe29 | bellard | macro parameters */
|
1046 | c896fe29 | bellard | |
1047 | c896fe29 | bellard | /* set the next instruction to the end of the macro */
|
1048 | c896fe29 | bellard | op_index = macro_end_op_index; |
1049 | c896fe29 | bellard | args = macro_end_arg_index + gen_opparam_buf; |
1050 | c896fe29 | bellard | } |
1051 | c896fe29 | bellard | break;
|
1052 | c896fe29 | bellard | case INDEX_op_macro_start:
|
1053 | c896fe29 | bellard | args -= 2;
|
1054 | c896fe29 | bellard | op_index = args[0];
|
1055 | c896fe29 | bellard | args = gen_opparam_buf + args[1];
|
1056 | c896fe29 | bellard | break;
|
1057 | c896fe29 | bellard | case INDEX_op_macro_goto:
|
1058 | c896fe29 | bellard | case INDEX_op_macro_end:
|
1059 | c896fe29 | bellard | tcg_abort(); /* should never happen in liveness analysis */
|
1060 | c896fe29 | bellard | case INDEX_op_end:
|
1061 | c896fe29 | bellard | break;
|
1062 | c896fe29 | bellard | /* XXX: optimize by hardcoding common cases (e.g. triadic ops) */
|
1063 | c896fe29 | bellard | default:
|
1064 | c896fe29 | bellard | if (op > INDEX_op_end) {
|
1065 | c896fe29 | bellard | args -= def->nb_args; |
1066 | c896fe29 | bellard | nb_iargs = def->nb_iargs; |
1067 | c896fe29 | bellard | nb_oargs = def->nb_oargs; |
1068 | c896fe29 | bellard | |
1069 | c896fe29 | bellard | /* Test if the operation can be removed because all
|
1070 | 5ff9d6a4 | bellard | its outputs are dead. We assume that nb_oargs == 0
|
1071 | 5ff9d6a4 | bellard | implies side effects */
|
1072 | 5ff9d6a4 | bellard | if (!(def->flags & TCG_OPF_SIDE_EFFECTS) && nb_oargs != 0) { |
1073 | c896fe29 | bellard | for(i = 0; i < nb_oargs; i++) { |
1074 | c896fe29 | bellard | arg = args[i]; |
1075 | c896fe29 | bellard | if (!dead_temps[arg])
|
1076 | c896fe29 | bellard | goto do_not_remove;
|
1077 | c896fe29 | bellard | } |
1078 | c896fe29 | bellard | tcg_set_nop(s, gen_opc_buf + op_index, args, def->nb_args); |
1079 | c896fe29 | bellard | #ifdef CONFIG_PROFILER
|
1080 | c896fe29 | bellard | { |
1081 | c896fe29 | bellard | extern int64_t dyngen_tcg_del_op_count;
|
1082 | c896fe29 | bellard | dyngen_tcg_del_op_count++; |
1083 | c896fe29 | bellard | } |
1084 | c896fe29 | bellard | #endif
|
1085 | c896fe29 | bellard | } else {
|
1086 | c896fe29 | bellard | do_not_remove:
|
1087 | c896fe29 | bellard | |
1088 | c896fe29 | bellard | /* output args are dead */
|
1089 | c896fe29 | bellard | for(i = 0; i < nb_oargs; i++) { |
1090 | c896fe29 | bellard | arg = args[i]; |
1091 | c896fe29 | bellard | dead_temps[arg] = 1;
|
1092 | c896fe29 | bellard | } |
1093 | c896fe29 | bellard | |
1094 | c896fe29 | bellard | /* if end of basic block, update */
|
1095 | c896fe29 | bellard | if (def->flags & TCG_OPF_BB_END) {
|
1096 | c896fe29 | bellard | tcg_la_bb_end(s, dead_temps); |
1097 | b03cce8e | bellard | } else if (def->flags & TCG_OPF_CALL_CLOBBER) { |
1098 | b03cce8e | bellard | /* globals are live */
|
1099 | b03cce8e | bellard | memset(dead_temps, 0, s->nb_globals);
|
1100 | c896fe29 | bellard | } |
1101 | c896fe29 | bellard | |
1102 | c896fe29 | bellard | /* input args are live */
|
1103 | c896fe29 | bellard | dead_iargs = 0;
|
1104 | c896fe29 | bellard | for(i = 0; i < nb_iargs; i++) { |
1105 | c896fe29 | bellard | arg = args[i + nb_oargs]; |
1106 | c896fe29 | bellard | if (dead_temps[arg]) {
|
1107 | c896fe29 | bellard | dead_iargs |= (1 << i);
|
1108 | c896fe29 | bellard | } |
1109 | c896fe29 | bellard | dead_temps[arg] = 0;
|
1110 | c896fe29 | bellard | } |
1111 | c896fe29 | bellard | s->op_dead_iargs[op_index] = dead_iargs; |
1112 | c896fe29 | bellard | } |
1113 | c896fe29 | bellard | } else {
|
1114 | c896fe29 | bellard | /* legacy dyngen operations */
|
1115 | c896fe29 | bellard | args -= def->nb_args; |
1116 | c896fe29 | bellard | /* mark end of basic block */
|
1117 | c896fe29 | bellard | tcg_la_bb_end(s, dead_temps); |
1118 | c896fe29 | bellard | } |
1119 | c896fe29 | bellard | break;
|
1120 | c896fe29 | bellard | } |
1121 | c896fe29 | bellard | op_index--; |
1122 | c896fe29 | bellard | } |
1123 | c896fe29 | bellard | |
1124 | c896fe29 | bellard | if (args != gen_opparam_buf)
|
1125 | c896fe29 | bellard | tcg_abort(); |
1126 | c896fe29 | bellard | } |
1127 | c896fe29 | bellard | #else
|
1128 | c896fe29 | bellard | /* dummy liveness analysis */
|
1129 | c896fe29 | bellard | void tcg_liveness_analysis(TCGContext *s)
|
1130 | c896fe29 | bellard | { |
1131 | c896fe29 | bellard | int nb_ops;
|
1132 | c896fe29 | bellard | nb_ops = gen_opc_ptr - gen_opc_buf; |
1133 | c896fe29 | bellard | |
1134 | c896fe29 | bellard | s->op_dead_iargs = tcg_malloc(nb_ops * sizeof(uint16_t));
|
1135 | c896fe29 | bellard | memset(s->op_dead_iargs, 0, nb_ops * sizeof(uint16_t)); |
1136 | c896fe29 | bellard | } |
1137 | c896fe29 | bellard | #endif
|
1138 | c896fe29 | bellard | |
1139 | c896fe29 | bellard | #ifndef NDEBUG
|
1140 | c896fe29 | bellard | static void dump_regs(TCGContext *s) |
1141 | c896fe29 | bellard | { |
1142 | c896fe29 | bellard | TCGTemp *ts; |
1143 | c896fe29 | bellard | int i;
|
1144 | c896fe29 | bellard | char buf[64]; |
1145 | c896fe29 | bellard | |
1146 | c896fe29 | bellard | for(i = 0; i < s->nb_temps; i++) { |
1147 | c896fe29 | bellard | ts = &s->temps[i]; |
1148 | ac56dd48 | pbrook | printf(" %10s: ", tcg_get_arg_str_idx(s, buf, sizeof(buf), i)); |
1149 | c896fe29 | bellard | switch(ts->val_type) {
|
1150 | c896fe29 | bellard | case TEMP_VAL_REG:
|
1151 | c896fe29 | bellard | printf("%s", tcg_target_reg_names[ts->reg]);
|
1152 | c896fe29 | bellard | break;
|
1153 | c896fe29 | bellard | case TEMP_VAL_MEM:
|
1154 | c896fe29 | bellard | printf("%d(%s)", (int)ts->mem_offset, tcg_target_reg_names[ts->mem_reg]); |
1155 | c896fe29 | bellard | break;
|
1156 | c896fe29 | bellard | case TEMP_VAL_CONST:
|
1157 | c896fe29 | bellard | printf("$0x%" TCG_PRIlx, ts->val);
|
1158 | c896fe29 | bellard | break;
|
1159 | c896fe29 | bellard | case TEMP_VAL_DEAD:
|
1160 | c896fe29 | bellard | printf("D");
|
1161 | c896fe29 | bellard | break;
|
1162 | c896fe29 | bellard | default:
|
1163 | c896fe29 | bellard | printf("???");
|
1164 | c896fe29 | bellard | break;
|
1165 | c896fe29 | bellard | } |
1166 | c896fe29 | bellard | printf("\n");
|
1167 | c896fe29 | bellard | } |
1168 | c896fe29 | bellard | |
1169 | c896fe29 | bellard | for(i = 0; i < TCG_TARGET_NB_REGS; i++) { |
1170 | c896fe29 | bellard | if (s->reg_to_temp[i] >= 0) { |
1171 | c896fe29 | bellard | printf("%s: %s\n",
|
1172 | c896fe29 | bellard | tcg_target_reg_names[i], |
1173 | ac56dd48 | pbrook | tcg_get_arg_str_idx(s, buf, sizeof(buf), s->reg_to_temp[i]));
|
1174 | c896fe29 | bellard | } |
1175 | c896fe29 | bellard | } |
1176 | c896fe29 | bellard | } |
1177 | c896fe29 | bellard | |
1178 | c896fe29 | bellard | static void check_regs(TCGContext *s) |
1179 | c896fe29 | bellard | { |
1180 | c896fe29 | bellard | int reg, k;
|
1181 | c896fe29 | bellard | TCGTemp *ts; |
1182 | c896fe29 | bellard | char buf[64]; |
1183 | c896fe29 | bellard | |
1184 | c896fe29 | bellard | for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) { |
1185 | c896fe29 | bellard | k = s->reg_to_temp[reg]; |
1186 | c896fe29 | bellard | if (k >= 0) { |
1187 | c896fe29 | bellard | ts = &s->temps[k]; |
1188 | c896fe29 | bellard | if (ts->val_type != TEMP_VAL_REG ||
|
1189 | c896fe29 | bellard | ts->reg != reg) { |
1190 | c896fe29 | bellard | printf("Inconsistency for register %s:\n",
|
1191 | c896fe29 | bellard | tcg_target_reg_names[reg]); |
1192 | b03cce8e | bellard | goto fail;
|
1193 | c896fe29 | bellard | } |
1194 | c896fe29 | bellard | } |
1195 | c896fe29 | bellard | } |
1196 | c896fe29 | bellard | for(k = 0; k < s->nb_temps; k++) { |
1197 | c896fe29 | bellard | ts = &s->temps[k]; |
1198 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG &&
|
1199 | c896fe29 | bellard | !ts->fixed_reg && |
1200 | c896fe29 | bellard | s->reg_to_temp[ts->reg] != k) { |
1201 | c896fe29 | bellard | printf("Inconsistency for temp %s:\n",
|
1202 | ac56dd48 | pbrook | tcg_get_arg_str_idx(s, buf, sizeof(buf), k));
|
1203 | b03cce8e | bellard | fail:
|
1204 | c896fe29 | bellard | printf("reg state:\n");
|
1205 | c896fe29 | bellard | dump_regs(s); |
1206 | c896fe29 | bellard | tcg_abort(); |
1207 | c896fe29 | bellard | } |
1208 | b03cce8e | bellard | if (ts->val_type == TEMP_VAL_CONST && k < s->nb_globals) {
|
1209 | b03cce8e | bellard | printf("constant forbidden in global %s\n",
|
1210 | b03cce8e | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), k));
|
1211 | b03cce8e | bellard | goto fail;
|
1212 | b03cce8e | bellard | } |
1213 | c896fe29 | bellard | } |
1214 | c896fe29 | bellard | } |
1215 | c896fe29 | bellard | #endif
|
1216 | c896fe29 | bellard | |
1217 | c896fe29 | bellard | static void temp_allocate_frame(TCGContext *s, int temp) |
1218 | c896fe29 | bellard | { |
1219 | c896fe29 | bellard | TCGTemp *ts; |
1220 | c896fe29 | bellard | ts = &s->temps[temp]; |
1221 | c896fe29 | bellard | s->current_frame_offset = (s->current_frame_offset + sizeof(tcg_target_long) - 1) & ~(sizeof(tcg_target_long) - 1); |
1222 | c896fe29 | bellard | if (s->current_frame_offset + sizeof(tcg_target_long) > s->frame_end) |
1223 | 5ff9d6a4 | bellard | tcg_abort(); |
1224 | c896fe29 | bellard | ts->mem_offset = s->current_frame_offset; |
1225 | c896fe29 | bellard | ts->mem_reg = s->frame_reg; |
1226 | c896fe29 | bellard | ts->mem_allocated = 1;
|
1227 | c896fe29 | bellard | s->current_frame_offset += sizeof(tcg_target_long);
|
1228 | c896fe29 | bellard | } |
1229 | c896fe29 | bellard | |
1230 | c896fe29 | bellard | /* free register 'reg' by spilling the corresponding temporary if necessary */
|
1231 | c896fe29 | bellard | static void tcg_reg_free(TCGContext *s, int reg) |
1232 | c896fe29 | bellard | { |
1233 | c896fe29 | bellard | TCGTemp *ts; |
1234 | c896fe29 | bellard | int temp;
|
1235 | c896fe29 | bellard | |
1236 | c896fe29 | bellard | temp = s->reg_to_temp[reg]; |
1237 | c896fe29 | bellard | if (temp != -1) { |
1238 | c896fe29 | bellard | ts = &s->temps[temp]; |
1239 | c896fe29 | bellard | assert(ts->val_type == TEMP_VAL_REG); |
1240 | c896fe29 | bellard | if (!ts->mem_coherent) {
|
1241 | c896fe29 | bellard | if (!ts->mem_allocated)
|
1242 | c896fe29 | bellard | temp_allocate_frame(s, temp); |
1243 | e4d5434c | blueswir1 | tcg_out_st(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1244 | c896fe29 | bellard | } |
1245 | c896fe29 | bellard | ts->val_type = TEMP_VAL_MEM; |
1246 | c896fe29 | bellard | s->reg_to_temp[reg] = -1;
|
1247 | c896fe29 | bellard | } |
1248 | c896fe29 | bellard | } |
1249 | c896fe29 | bellard | |
1250 | c896fe29 | bellard | /* Allocate a register belonging to reg1 & ~reg2 */
|
1251 | c896fe29 | bellard | static int tcg_reg_alloc(TCGContext *s, TCGRegSet reg1, TCGRegSet reg2) |
1252 | c896fe29 | bellard | { |
1253 | c896fe29 | bellard | int i, reg;
|
1254 | c896fe29 | bellard | TCGRegSet reg_ct; |
1255 | c896fe29 | bellard | |
1256 | c896fe29 | bellard | tcg_regset_andnot(reg_ct, reg1, reg2); |
1257 | c896fe29 | bellard | |
1258 | c896fe29 | bellard | /* first try free registers */
|
1259 | 0954d0d9 | blueswir1 | for(i = 0; i < ARRAY_SIZE(tcg_target_reg_alloc_order); i++) { |
1260 | c896fe29 | bellard | reg = tcg_target_reg_alloc_order[i]; |
1261 | c896fe29 | bellard | if (tcg_regset_test_reg(reg_ct, reg) && s->reg_to_temp[reg] == -1) |
1262 | c896fe29 | bellard | return reg;
|
1263 | c896fe29 | bellard | } |
1264 | c896fe29 | bellard | |
1265 | c896fe29 | bellard | /* XXX: do better spill choice */
|
1266 | 0954d0d9 | blueswir1 | for(i = 0; i < ARRAY_SIZE(tcg_target_reg_alloc_order); i++) { |
1267 | c896fe29 | bellard | reg = tcg_target_reg_alloc_order[i]; |
1268 | c896fe29 | bellard | if (tcg_regset_test_reg(reg_ct, reg)) {
|
1269 | c896fe29 | bellard | tcg_reg_free(s, reg); |
1270 | c896fe29 | bellard | return reg;
|
1271 | c896fe29 | bellard | } |
1272 | c896fe29 | bellard | } |
1273 | c896fe29 | bellard | |
1274 | c896fe29 | bellard | tcg_abort(); |
1275 | c896fe29 | bellard | } |
1276 | c896fe29 | bellard | |
1277 | c896fe29 | bellard | /* at the end of a basic block, we assume all temporaries are dead and
|
1278 | c896fe29 | bellard | all globals are stored at their canonical location */
|
1279 | c896fe29 | bellard | /* XXX: optimize by handling constants in another array ? */
|
1280 | c896fe29 | bellard | void tcg_reg_alloc_bb_end(TCGContext *s)
|
1281 | c896fe29 | bellard | { |
1282 | c896fe29 | bellard | TCGTemp *ts; |
1283 | c896fe29 | bellard | int i;
|
1284 | c896fe29 | bellard | |
1285 | c896fe29 | bellard | for(i = 0; i < s->nb_globals; i++) { |
1286 | c896fe29 | bellard | ts = &s->temps[i]; |
1287 | c896fe29 | bellard | if (!ts->fixed_reg) {
|
1288 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1289 | c896fe29 | bellard | tcg_reg_free(s, ts->reg); |
1290 | c896fe29 | bellard | } |
1291 | c896fe29 | bellard | } |
1292 | c896fe29 | bellard | } |
1293 | c896fe29 | bellard | |
1294 | c896fe29 | bellard | for(i = s->nb_globals; i < s->nb_temps; i++) {
|
1295 | c896fe29 | bellard | ts = &s->temps[i]; |
1296 | c896fe29 | bellard | if (ts->val_type != TEMP_VAL_CONST) {
|
1297 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1298 | c896fe29 | bellard | s->reg_to_temp[ts->reg] = -1;
|
1299 | c896fe29 | bellard | } |
1300 | c896fe29 | bellard | ts->val_type = TEMP_VAL_DEAD; |
1301 | c896fe29 | bellard | } |
1302 | c896fe29 | bellard | } |
1303 | c896fe29 | bellard | } |
1304 | c896fe29 | bellard | |
1305 | c896fe29 | bellard | #define IS_DEAD_IARG(n) ((dead_iargs >> (n)) & 1) |
1306 | c896fe29 | bellard | |
1307 | c896fe29 | bellard | static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def, |
1308 | c896fe29 | bellard | const TCGArg *args,
|
1309 | c896fe29 | bellard | unsigned int dead_iargs) |
1310 | c896fe29 | bellard | { |
1311 | c896fe29 | bellard | TCGTemp *ts, *ots; |
1312 | c896fe29 | bellard | int reg;
|
1313 | c896fe29 | bellard | const TCGArgConstraint *arg_ct;
|
1314 | c896fe29 | bellard | |
1315 | c896fe29 | bellard | ots = &s->temps[args[0]];
|
1316 | c896fe29 | bellard | ts = &s->temps[args[1]];
|
1317 | c896fe29 | bellard | arg_ct = &def->args_ct[0];
|
1318 | c896fe29 | bellard | |
1319 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1320 | c896fe29 | bellard | if (IS_DEAD_IARG(0) && !ts->fixed_reg && !ots->fixed_reg) { |
1321 | c896fe29 | bellard | /* the mov can be suppressed */
|
1322 | c896fe29 | bellard | if (ots->val_type == TEMP_VAL_REG)
|
1323 | c896fe29 | bellard | s->reg_to_temp[ots->reg] = -1;
|
1324 | c896fe29 | bellard | reg = ts->reg; |
1325 | c896fe29 | bellard | s->reg_to_temp[reg] = -1;
|
1326 | c896fe29 | bellard | ts->val_type = TEMP_VAL_DEAD; |
1327 | c896fe29 | bellard | } else {
|
1328 | c896fe29 | bellard | if (ots->val_type == TEMP_VAL_REG) {
|
1329 | c896fe29 | bellard | reg = ots->reg; |
1330 | c896fe29 | bellard | } else {
|
1331 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, s->reserved_regs); |
1332 | c896fe29 | bellard | } |
1333 | c896fe29 | bellard | if (ts->reg != reg) {
|
1334 | c896fe29 | bellard | tcg_out_mov(s, reg, ts->reg); |
1335 | c896fe29 | bellard | } |
1336 | c896fe29 | bellard | } |
1337 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_MEM) { |
1338 | c896fe29 | bellard | if (ots->val_type == TEMP_VAL_REG) {
|
1339 | c896fe29 | bellard | reg = ots->reg; |
1340 | c896fe29 | bellard | } else {
|
1341 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, s->reserved_regs); |
1342 | c896fe29 | bellard | } |
1343 | e4d5434c | blueswir1 | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1344 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1345 | c896fe29 | bellard | if (ots->val_type == TEMP_VAL_REG) {
|
1346 | c896fe29 | bellard | reg = ots->reg; |
1347 | c896fe29 | bellard | } else {
|
1348 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, s->reserved_regs); |
1349 | c896fe29 | bellard | } |
1350 | c896fe29 | bellard | tcg_out_movi(s, ots->type, reg, ts->val); |
1351 | c896fe29 | bellard | } else {
|
1352 | c896fe29 | bellard | tcg_abort(); |
1353 | c896fe29 | bellard | } |
1354 | c896fe29 | bellard | s->reg_to_temp[reg] = args[0];
|
1355 | c896fe29 | bellard | ots->reg = reg; |
1356 | c896fe29 | bellard | ots->val_type = TEMP_VAL_REG; |
1357 | c896fe29 | bellard | ots->mem_coherent = 0;
|
1358 | c896fe29 | bellard | } |
1359 | c896fe29 | bellard | |
1360 | c896fe29 | bellard | static void tcg_reg_alloc_op(TCGContext *s, |
1361 | c896fe29 | bellard | const TCGOpDef *def, int opc, |
1362 | c896fe29 | bellard | const TCGArg *args,
|
1363 | c896fe29 | bellard | unsigned int dead_iargs) |
1364 | c896fe29 | bellard | { |
1365 | c896fe29 | bellard | TCGRegSet allocated_regs; |
1366 | c896fe29 | bellard | int i, k, nb_iargs, nb_oargs, reg;
|
1367 | c896fe29 | bellard | TCGArg arg; |
1368 | c896fe29 | bellard | const TCGArgConstraint *arg_ct;
|
1369 | c896fe29 | bellard | TCGTemp *ts; |
1370 | c896fe29 | bellard | TCGArg new_args[TCG_MAX_OP_ARGS]; |
1371 | c896fe29 | bellard | int const_args[TCG_MAX_OP_ARGS];
|
1372 | c896fe29 | bellard | |
1373 | c896fe29 | bellard | nb_oargs = def->nb_oargs; |
1374 | c896fe29 | bellard | nb_iargs = def->nb_iargs; |
1375 | c896fe29 | bellard | |
1376 | c896fe29 | bellard | /* copy constants */
|
1377 | c896fe29 | bellard | memcpy(new_args + nb_oargs + nb_iargs, |
1378 | c896fe29 | bellard | args + nb_oargs + nb_iargs, |
1379 | c896fe29 | bellard | sizeof(TCGArg) * def->nb_cargs);
|
1380 | c896fe29 | bellard | |
1381 | c896fe29 | bellard | /* satisfy input constraints */
|
1382 | c896fe29 | bellard | tcg_regset_set(allocated_regs, s->reserved_regs); |
1383 | c896fe29 | bellard | for(k = 0; k < nb_iargs; k++) { |
1384 | c896fe29 | bellard | i = def->sorted_args[nb_oargs + k]; |
1385 | c896fe29 | bellard | arg = args[i]; |
1386 | c896fe29 | bellard | arg_ct = &def->args_ct[i]; |
1387 | c896fe29 | bellard | ts = &s->temps[arg]; |
1388 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_MEM) {
|
1389 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1390 | e4d5434c | blueswir1 | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1391 | c896fe29 | bellard | ts->val_type = TEMP_VAL_REG; |
1392 | c896fe29 | bellard | ts->reg = reg; |
1393 | c896fe29 | bellard | ts->mem_coherent = 1;
|
1394 | c896fe29 | bellard | s->reg_to_temp[reg] = arg; |
1395 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1396 | c896fe29 | bellard | if (tcg_target_const_match(ts->val, arg_ct)) {
|
1397 | c896fe29 | bellard | /* constant is OK for instruction */
|
1398 | c896fe29 | bellard | const_args[i] = 1;
|
1399 | c896fe29 | bellard | new_args[i] = ts->val; |
1400 | c896fe29 | bellard | goto iarg_end;
|
1401 | c896fe29 | bellard | } else {
|
1402 | c896fe29 | bellard | /* need to move to a register*/
|
1403 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1404 | c896fe29 | bellard | tcg_out_movi(s, ts->type, reg, ts->val); |
1405 | c896fe29 | bellard | goto iarg_end1;
|
1406 | c896fe29 | bellard | } |
1407 | c896fe29 | bellard | } |
1408 | c896fe29 | bellard | assert(ts->val_type == TEMP_VAL_REG); |
1409 | 5ff9d6a4 | bellard | if (arg_ct->ct & TCG_CT_IALIAS) {
|
1410 | 5ff9d6a4 | bellard | if (ts->fixed_reg) {
|
1411 | 5ff9d6a4 | bellard | /* if fixed register, we must allocate a new register
|
1412 | 5ff9d6a4 | bellard | if the alias is not the same register */
|
1413 | 5ff9d6a4 | bellard | if (arg != args[arg_ct->alias_index])
|
1414 | 5ff9d6a4 | bellard | goto allocate_in_reg;
|
1415 | 5ff9d6a4 | bellard | } else {
|
1416 | 5ff9d6a4 | bellard | /* if the input is aliased to an output and if it is
|
1417 | 5ff9d6a4 | bellard | not dead after the instruction, we must allocate
|
1418 | 5ff9d6a4 | bellard | a new register and move it */
|
1419 | 5ff9d6a4 | bellard | if (!IS_DEAD_IARG(i - nb_oargs))
|
1420 | 5ff9d6a4 | bellard | goto allocate_in_reg;
|
1421 | 5ff9d6a4 | bellard | } |
1422 | c896fe29 | bellard | } |
1423 | c896fe29 | bellard | reg = ts->reg; |
1424 | c896fe29 | bellard | if (tcg_regset_test_reg(arg_ct->u.regs, reg)) {
|
1425 | c896fe29 | bellard | /* nothing to do : the constraint is satisfied */
|
1426 | c896fe29 | bellard | } else {
|
1427 | c896fe29 | bellard | allocate_in_reg:
|
1428 | c896fe29 | bellard | /* allocate a new register matching the constraint
|
1429 | c896fe29 | bellard | and move the temporary register into it */
|
1430 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1431 | c896fe29 | bellard | tcg_out_mov(s, reg, ts->reg); |
1432 | c896fe29 | bellard | } |
1433 | c896fe29 | bellard | iarg_end1:
|
1434 | c896fe29 | bellard | new_args[i] = reg; |
1435 | c896fe29 | bellard | const_args[i] = 0;
|
1436 | c896fe29 | bellard | tcg_regset_set_reg(allocated_regs, reg); |
1437 | c896fe29 | bellard | iarg_end: ;
|
1438 | c896fe29 | bellard | } |
1439 | c896fe29 | bellard | |
1440 | c896fe29 | bellard | /* mark dead temporaries and free the associated registers */
|
1441 | c896fe29 | bellard | for(i = 0; i < nb_iargs; i++) { |
1442 | c896fe29 | bellard | arg = args[nb_oargs + i]; |
1443 | c896fe29 | bellard | if (IS_DEAD_IARG(i)) {
|
1444 | c896fe29 | bellard | ts = &s->temps[arg]; |
1445 | c896fe29 | bellard | if (ts->val_type != TEMP_VAL_CONST && !ts->fixed_reg) {
|
1446 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
1447 | c896fe29 | bellard | s->reg_to_temp[ts->reg] = -1;
|
1448 | c896fe29 | bellard | ts->val_type = TEMP_VAL_DEAD; |
1449 | c896fe29 | bellard | } |
1450 | c896fe29 | bellard | } |
1451 | c896fe29 | bellard | } |
1452 | c896fe29 | bellard | |
1453 | c896fe29 | bellard | if (def->flags & TCG_OPF_CALL_CLOBBER) {
|
1454 | b03cce8e | bellard | /* XXX: permit generic clobber register list ? */
|
1455 | c896fe29 | bellard | for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) { |
1456 | c896fe29 | bellard | if (tcg_regset_test_reg(tcg_target_call_clobber_regs, reg)) {
|
1457 | c896fe29 | bellard | tcg_reg_free(s, reg); |
1458 | c896fe29 | bellard | } |
1459 | c896fe29 | bellard | } |
1460 | b03cce8e | bellard | /* XXX: for load/store we could do that only for the slow path
|
1461 | b03cce8e | bellard | (i.e. when a memory callback is called) */
|
1462 | b03cce8e | bellard | |
1463 | b03cce8e | bellard | /* store globals and free associated registers (we assume the insn
|
1464 | b03cce8e | bellard | can modify any global. */
|
1465 | b03cce8e | bellard | for(i = 0; i < s->nb_globals; i++) { |
1466 | b03cce8e | bellard | ts = &s->temps[i]; |
1467 | b03cce8e | bellard | if (!ts->fixed_reg) {
|
1468 | b03cce8e | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1469 | b03cce8e | bellard | tcg_reg_free(s, ts->reg); |
1470 | b03cce8e | bellard | } |
1471 | b03cce8e | bellard | } |
1472 | b03cce8e | bellard | } |
1473 | c896fe29 | bellard | } |
1474 | c896fe29 | bellard | |
1475 | c896fe29 | bellard | /* satisfy the output constraints */
|
1476 | c896fe29 | bellard | tcg_regset_set(allocated_regs, s->reserved_regs); |
1477 | c896fe29 | bellard | for(k = 0; k < nb_oargs; k++) { |
1478 | c896fe29 | bellard | i = def->sorted_args[k]; |
1479 | c896fe29 | bellard | arg = args[i]; |
1480 | c896fe29 | bellard | arg_ct = &def->args_ct[i]; |
1481 | c896fe29 | bellard | ts = &s->temps[arg]; |
1482 | c896fe29 | bellard | if (arg_ct->ct & TCG_CT_ALIAS) {
|
1483 | 5ff9d6a4 | bellard | reg = new_args[arg_ct->alias_index]; |
1484 | c896fe29 | bellard | } else {
|
1485 | c896fe29 | bellard | /* if fixed register, we try to use it */
|
1486 | c896fe29 | bellard | reg = ts->reg; |
1487 | c896fe29 | bellard | if (ts->fixed_reg &&
|
1488 | c896fe29 | bellard | tcg_regset_test_reg(arg_ct->u.regs, reg)) { |
1489 | c896fe29 | bellard | goto oarg_end;
|
1490 | c896fe29 | bellard | } |
1491 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1492 | c896fe29 | bellard | } |
1493 | c896fe29 | bellard | tcg_regset_set_reg(allocated_regs, reg); |
1494 | c896fe29 | bellard | /* if a fixed register is used, then a move will be done afterwards */
|
1495 | c896fe29 | bellard | if (!ts->fixed_reg) {
|
1496 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
1497 | c896fe29 | bellard | s->reg_to_temp[ts->reg] = -1;
|
1498 | c896fe29 | bellard | ts->val_type = TEMP_VAL_REG; |
1499 | c896fe29 | bellard | ts->reg = reg; |
1500 | c896fe29 | bellard | /* temp value is modified, so the value kept in memory is
|
1501 | c896fe29 | bellard | potentially not the same */
|
1502 | c896fe29 | bellard | ts->mem_coherent = 0;
|
1503 | c896fe29 | bellard | s->reg_to_temp[reg] = arg; |
1504 | c896fe29 | bellard | } |
1505 | c896fe29 | bellard | oarg_end:
|
1506 | c896fe29 | bellard | new_args[i] = reg; |
1507 | c896fe29 | bellard | } |
1508 | c896fe29 | bellard | |
1509 | c896fe29 | bellard | if (def->flags & TCG_OPF_BB_END)
|
1510 | c896fe29 | bellard | tcg_reg_alloc_bb_end(s); |
1511 | c896fe29 | bellard | |
1512 | c896fe29 | bellard | /* emit instruction */
|
1513 | c896fe29 | bellard | tcg_out_op(s, opc, new_args, const_args); |
1514 | c896fe29 | bellard | |
1515 | c896fe29 | bellard | /* move the outputs in the correct register if needed */
|
1516 | c896fe29 | bellard | for(i = 0; i < nb_oargs; i++) { |
1517 | c896fe29 | bellard | ts = &s->temps[args[i]]; |
1518 | c896fe29 | bellard | reg = new_args[i]; |
1519 | c896fe29 | bellard | if (ts->fixed_reg && ts->reg != reg) {
|
1520 | c896fe29 | bellard | tcg_out_mov(s, ts->reg, reg); |
1521 | c896fe29 | bellard | } |
1522 | c896fe29 | bellard | } |
1523 | c896fe29 | bellard | } |
1524 | c896fe29 | bellard | |
1525 | b03cce8e | bellard | #ifdef TCG_TARGET_STACK_GROWSUP
|
1526 | b03cce8e | bellard | #define STACK_DIR(x) (-(x))
|
1527 | b03cce8e | bellard | #else
|
1528 | b03cce8e | bellard | #define STACK_DIR(x) (x)
|
1529 | b03cce8e | bellard | #endif
|
1530 | b03cce8e | bellard | |
1531 | c896fe29 | bellard | static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def, |
1532 | c896fe29 | bellard | int opc, const TCGArg *args, |
1533 | c896fe29 | bellard | unsigned int dead_iargs) |
1534 | c896fe29 | bellard | { |
1535 | c896fe29 | bellard | int nb_iargs, nb_oargs, flags, nb_regs, i, reg, nb_params;
|
1536 | c896fe29 | bellard | TCGArg arg, func_arg; |
1537 | c896fe29 | bellard | TCGTemp *ts; |
1538 | f54b3f92 | aurel32 | tcg_target_long stack_offset, call_stack_size, func_addr; |
1539 | b03cce8e | bellard | int const_func_arg, allocate_args;
|
1540 | c896fe29 | bellard | TCGRegSet allocated_regs; |
1541 | c896fe29 | bellard | const TCGArgConstraint *arg_ct;
|
1542 | c896fe29 | bellard | |
1543 | c896fe29 | bellard | arg = *args++; |
1544 | c896fe29 | bellard | |
1545 | c896fe29 | bellard | nb_oargs = arg >> 16;
|
1546 | c896fe29 | bellard | nb_iargs = arg & 0xffff;
|
1547 | c896fe29 | bellard | nb_params = nb_iargs - 1;
|
1548 | c896fe29 | bellard | |
1549 | c896fe29 | bellard | flags = args[nb_oargs + nb_iargs]; |
1550 | c896fe29 | bellard | |
1551 | c896fe29 | bellard | nb_regs = tcg_target_get_call_iarg_regs_count(flags); |
1552 | c896fe29 | bellard | if (nb_regs > nb_params)
|
1553 | c896fe29 | bellard | nb_regs = nb_params; |
1554 | c896fe29 | bellard | |
1555 | c896fe29 | bellard | /* assign stack slots first */
|
1556 | c896fe29 | bellard | /* XXX: preallocate call stack */
|
1557 | c896fe29 | bellard | call_stack_size = (nb_params - nb_regs) * sizeof(tcg_target_long);
|
1558 | c896fe29 | bellard | call_stack_size = (call_stack_size + TCG_TARGET_STACK_ALIGN - 1) &
|
1559 | c896fe29 | bellard | ~(TCG_TARGET_STACK_ALIGN - 1);
|
1560 | b03cce8e | bellard | allocate_args = (call_stack_size > TCG_STATIC_CALL_ARGS_SIZE); |
1561 | b03cce8e | bellard | if (allocate_args) {
|
1562 | b03cce8e | bellard | tcg_out_addi(s, TCG_REG_CALL_STACK, -STACK_DIR(call_stack_size)); |
1563 | b03cce8e | bellard | } |
1564 | b03cce8e | bellard | /* XXX: on some architectures it does not start at zero */
|
1565 | c896fe29 | bellard | stack_offset = 0;
|
1566 | c896fe29 | bellard | for(i = nb_regs; i < nb_params; i++) {
|
1567 | c896fe29 | bellard | arg = args[nb_oargs + i]; |
1568 | c896fe29 | bellard | ts = &s->temps[arg]; |
1569 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1570 | e4d5434c | blueswir1 | tcg_out_st(s, ts->type, ts->reg, TCG_REG_CALL_STACK, stack_offset); |
1571 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_MEM) { |
1572 | c896fe29 | bellard | reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type], |
1573 | c896fe29 | bellard | s->reserved_regs); |
1574 | c896fe29 | bellard | /* XXX: not correct if reading values from the stack */
|
1575 | e4d5434c | blueswir1 | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1576 | e4d5434c | blueswir1 | tcg_out_st(s, ts->type, reg, TCG_REG_CALL_STACK, stack_offset); |
1577 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1578 | c896fe29 | bellard | reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type], |
1579 | c896fe29 | bellard | s->reserved_regs); |
1580 | c896fe29 | bellard | /* XXX: sign extend may be needed on some targets */
|
1581 | c896fe29 | bellard | tcg_out_movi(s, ts->type, reg, ts->val); |
1582 | e4d5434c | blueswir1 | tcg_out_st(s, ts->type, reg, TCG_REG_CALL_STACK, stack_offset); |
1583 | c896fe29 | bellard | } else {
|
1584 | c896fe29 | bellard | tcg_abort(); |
1585 | c896fe29 | bellard | } |
1586 | b03cce8e | bellard | /* XXX: not necessarily in the same order */
|
1587 | b03cce8e | bellard | stack_offset += STACK_DIR(sizeof(tcg_target_long));
|
1588 | c896fe29 | bellard | } |
1589 | c896fe29 | bellard | |
1590 | c896fe29 | bellard | /* assign input registers */
|
1591 | c896fe29 | bellard | tcg_regset_set(allocated_regs, s->reserved_regs); |
1592 | c896fe29 | bellard | for(i = 0; i < nb_regs; i++) { |
1593 | c896fe29 | bellard | arg = args[nb_oargs + i]; |
1594 | c896fe29 | bellard | ts = &s->temps[arg]; |
1595 | c896fe29 | bellard | reg = tcg_target_call_iarg_regs[i]; |
1596 | c896fe29 | bellard | tcg_reg_free(s, reg); |
1597 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1598 | c896fe29 | bellard | if (ts->reg != reg) {
|
1599 | c896fe29 | bellard | tcg_out_mov(s, reg, ts->reg); |
1600 | c896fe29 | bellard | } |
1601 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_MEM) { |
1602 | e4d5434c | blueswir1 | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1603 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1604 | c896fe29 | bellard | /* XXX: sign extend ? */
|
1605 | c896fe29 | bellard | tcg_out_movi(s, ts->type, reg, ts->val); |
1606 | c896fe29 | bellard | } else {
|
1607 | c896fe29 | bellard | tcg_abort(); |
1608 | c896fe29 | bellard | } |
1609 | c896fe29 | bellard | tcg_regset_set_reg(allocated_regs, reg); |
1610 | c896fe29 | bellard | } |
1611 | c896fe29 | bellard | |
1612 | c896fe29 | bellard | /* assign function address */
|
1613 | c896fe29 | bellard | func_arg = args[nb_oargs + nb_iargs - 1];
|
1614 | c896fe29 | bellard | arg_ct = &def->args_ct[0];
|
1615 | c896fe29 | bellard | ts = &s->temps[func_arg]; |
1616 | f54b3f92 | aurel32 | func_addr = ts->val; |
1617 | c896fe29 | bellard | const_func_arg = 0;
|
1618 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_MEM) {
|
1619 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1620 | e4d5434c | blueswir1 | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1621 | c896fe29 | bellard | func_arg = reg; |
1622 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_REG) { |
1623 | c896fe29 | bellard | reg = ts->reg; |
1624 | c896fe29 | bellard | if (!tcg_regset_test_reg(arg_ct->u.regs, reg)) {
|
1625 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1626 | c896fe29 | bellard | tcg_out_mov(s, reg, ts->reg); |
1627 | c896fe29 | bellard | } |
1628 | c896fe29 | bellard | func_arg = reg; |
1629 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1630 | f54b3f92 | aurel32 | if (tcg_target_const_match(func_addr, arg_ct)) {
|
1631 | c896fe29 | bellard | const_func_arg = 1;
|
1632 | f54b3f92 | aurel32 | func_arg = func_addr; |
1633 | c896fe29 | bellard | } else {
|
1634 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1635 | f54b3f92 | aurel32 | tcg_out_movi(s, ts->type, reg, func_addr); |
1636 | c896fe29 | bellard | func_arg = reg; |
1637 | c896fe29 | bellard | } |
1638 | c896fe29 | bellard | } else {
|
1639 | c896fe29 | bellard | tcg_abort(); |
1640 | c896fe29 | bellard | } |
1641 | c896fe29 | bellard | |
1642 | c896fe29 | bellard | /* mark dead temporaries and free the associated registers */
|
1643 | c896fe29 | bellard | for(i = 0; i < nb_params; i++) { |
1644 | c896fe29 | bellard | arg = args[nb_oargs + i]; |
1645 | c896fe29 | bellard | if (IS_DEAD_IARG(i)) {
|
1646 | c896fe29 | bellard | ts = &s->temps[arg]; |
1647 | c896fe29 | bellard | if (ts->val_type != TEMP_VAL_CONST && !ts->fixed_reg) {
|
1648 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
1649 | c896fe29 | bellard | s->reg_to_temp[ts->reg] = -1;
|
1650 | c896fe29 | bellard | ts->val_type = TEMP_VAL_DEAD; |
1651 | c896fe29 | bellard | } |
1652 | c896fe29 | bellard | } |
1653 | c896fe29 | bellard | } |
1654 | c896fe29 | bellard | |
1655 | c896fe29 | bellard | /* clobber call registers */
|
1656 | c896fe29 | bellard | for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) { |
1657 | c896fe29 | bellard | if (tcg_regset_test_reg(tcg_target_call_clobber_regs, reg)) {
|
1658 | c896fe29 | bellard | tcg_reg_free(s, reg); |
1659 | c896fe29 | bellard | } |
1660 | c896fe29 | bellard | } |
1661 | c896fe29 | bellard | |
1662 | c896fe29 | bellard | /* store globals and free associated registers (we assume the call
|
1663 | c896fe29 | bellard | can modify any global. */
|
1664 | c896fe29 | bellard | for(i = 0; i < s->nb_globals; i++) { |
1665 | c896fe29 | bellard | ts = &s->temps[i]; |
1666 | c896fe29 | bellard | if (!ts->fixed_reg) {
|
1667 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1668 | c896fe29 | bellard | tcg_reg_free(s, ts->reg); |
1669 | c896fe29 | bellard | } |
1670 | c896fe29 | bellard | } |
1671 | c896fe29 | bellard | } |
1672 | c896fe29 | bellard | |
1673 | c896fe29 | bellard | tcg_out_op(s, opc, &func_arg, &const_func_arg); |
1674 | c896fe29 | bellard | |
1675 | b03cce8e | bellard | if (allocate_args) {
|
1676 | b03cce8e | bellard | tcg_out_addi(s, TCG_REG_CALL_STACK, STACK_DIR(call_stack_size)); |
1677 | b03cce8e | bellard | } |
1678 | c896fe29 | bellard | |
1679 | c896fe29 | bellard | /* assign output registers and emit moves if needed */
|
1680 | c896fe29 | bellard | for(i = 0; i < nb_oargs; i++) { |
1681 | c896fe29 | bellard | arg = args[i]; |
1682 | c896fe29 | bellard | ts = &s->temps[arg]; |
1683 | c896fe29 | bellard | reg = tcg_target_call_oarg_regs[i]; |
1684 | c896fe29 | bellard | tcg_reg_free(s, reg); |
1685 | c896fe29 | bellard | if (ts->fixed_reg) {
|
1686 | c896fe29 | bellard | if (ts->reg != reg) {
|
1687 | c896fe29 | bellard | tcg_out_mov(s, ts->reg, reg); |
1688 | c896fe29 | bellard | } |
1689 | c896fe29 | bellard | } else {
|
1690 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
1691 | c896fe29 | bellard | s->reg_to_temp[ts->reg] = -1;
|
1692 | c896fe29 | bellard | ts->val_type = TEMP_VAL_REG; |
1693 | c896fe29 | bellard | ts->reg = reg; |
1694 | c896fe29 | bellard | ts->mem_coherent = 0;
|
1695 | c896fe29 | bellard | s->reg_to_temp[reg] = arg; |
1696 | c896fe29 | bellard | } |
1697 | c896fe29 | bellard | } |
1698 | c896fe29 | bellard | |
1699 | c896fe29 | bellard | return nb_iargs + nb_oargs + def->nb_cargs + 1; |
1700 | c896fe29 | bellard | } |
1701 | c896fe29 | bellard | |
1702 | c896fe29 | bellard | #ifdef CONFIG_PROFILER
|
1703 | c896fe29 | bellard | |
1704 | c896fe29 | bellard | static int64_t dyngen_table_op_count[NB_OPS];
|
1705 | c896fe29 | bellard | |
1706 | c896fe29 | bellard | void dump_op_count(void) |
1707 | c896fe29 | bellard | { |
1708 | c896fe29 | bellard | int i;
|
1709 | c896fe29 | bellard | FILE *f; |
1710 | c896fe29 | bellard | f = fopen("/tmp/op1.log", "w"); |
1711 | c896fe29 | bellard | for(i = 0; i < INDEX_op_end; i++) { |
1712 | c896fe29 | bellard | fprintf(f, "%s %" PRId64 "\n", tcg_op_defs[i].name, dyngen_table_op_count[i]); |
1713 | c896fe29 | bellard | } |
1714 | c896fe29 | bellard | fclose(f); |
1715 | c896fe29 | bellard | f = fopen("/tmp/op2.log", "w"); |
1716 | c896fe29 | bellard | for(i = INDEX_op_end; i < NB_OPS; i++) {
|
1717 | c896fe29 | bellard | fprintf(f, "%s %" PRId64 "\n", tcg_op_defs[i].name, dyngen_table_op_count[i]); |
1718 | c896fe29 | bellard | } |
1719 | c896fe29 | bellard | fclose(f); |
1720 | c896fe29 | bellard | } |
1721 | c896fe29 | bellard | #endif
|
1722 | c896fe29 | bellard | |
1723 | c896fe29 | bellard | |
1724 | c896fe29 | bellard | static inline int tcg_gen_code_common(TCGContext *s, uint8_t *gen_code_buf, |
1725 | 2ba1eeb6 | pbrook | long search_pc)
|
1726 | c896fe29 | bellard | { |
1727 | c896fe29 | bellard | int opc, op_index, macro_op_index;
|
1728 | c896fe29 | bellard | const TCGOpDef *def;
|
1729 | c896fe29 | bellard | unsigned int dead_iargs; |
1730 | c896fe29 | bellard | const TCGArg *args;
|
1731 | c896fe29 | bellard | |
1732 | c896fe29 | bellard | #ifdef DEBUG_DISAS
|
1733 | c896fe29 | bellard | if (unlikely(loglevel & CPU_LOG_TB_OP)) {
|
1734 | c896fe29 | bellard | fprintf(logfile, "OP:\n");
|
1735 | c896fe29 | bellard | tcg_dump_ops(s, logfile); |
1736 | c896fe29 | bellard | fprintf(logfile, "\n");
|
1737 | c896fe29 | bellard | } |
1738 | c896fe29 | bellard | #endif
|
1739 | c896fe29 | bellard | |
1740 | c896fe29 | bellard | tcg_liveness_analysis(s); |
1741 | c896fe29 | bellard | |
1742 | c896fe29 | bellard | #ifdef DEBUG_DISAS
|
1743 | c896fe29 | bellard | if (unlikely(loglevel & CPU_LOG_TB_OP_OPT)) {
|
1744 | c896fe29 | bellard | fprintf(logfile, "OP after la:\n");
|
1745 | c896fe29 | bellard | tcg_dump_ops(s, logfile); |
1746 | c896fe29 | bellard | fprintf(logfile, "\n");
|
1747 | c896fe29 | bellard | } |
1748 | c896fe29 | bellard | #endif
|
1749 | c896fe29 | bellard | |
1750 | c896fe29 | bellard | tcg_reg_alloc_start(s); |
1751 | c896fe29 | bellard | |
1752 | c896fe29 | bellard | s->code_buf = gen_code_buf; |
1753 | c896fe29 | bellard | s->code_ptr = gen_code_buf; |
1754 | c896fe29 | bellard | |
1755 | c896fe29 | bellard | macro_op_index = -1;
|
1756 | c896fe29 | bellard | args = gen_opparam_buf; |
1757 | c896fe29 | bellard | op_index = 0;
|
1758 | b3db8758 | blueswir1 | |
1759 | c896fe29 | bellard | for(;;) {
|
1760 | c896fe29 | bellard | opc = gen_opc_buf[op_index]; |
1761 | c896fe29 | bellard | #ifdef CONFIG_PROFILER
|
1762 | c896fe29 | bellard | dyngen_table_op_count[opc]++; |
1763 | c896fe29 | bellard | #endif
|
1764 | c896fe29 | bellard | def = &tcg_op_defs[opc]; |
1765 | c896fe29 | bellard | #if 0
|
1766 | c896fe29 | bellard | printf("%s: %d %d %d\n", def->name,
|
1767 | c896fe29 | bellard | def->nb_oargs, def->nb_iargs, def->nb_cargs);
|
1768 | c896fe29 | bellard | // dump_regs(s);
|
1769 | c896fe29 | bellard | #endif
|
1770 | c896fe29 | bellard | switch(opc) {
|
1771 | c896fe29 | bellard | case INDEX_op_mov_i32:
|
1772 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS == 64 |
1773 | c896fe29 | bellard | case INDEX_op_mov_i64:
|
1774 | c896fe29 | bellard | #endif
|
1775 | c896fe29 | bellard | dead_iargs = s->op_dead_iargs[op_index]; |
1776 | c896fe29 | bellard | tcg_reg_alloc_mov(s, def, args, dead_iargs); |
1777 | c896fe29 | bellard | break;
|
1778 | c896fe29 | bellard | case INDEX_op_nop:
|
1779 | c896fe29 | bellard | case INDEX_op_nop1:
|
1780 | c896fe29 | bellard | case INDEX_op_nop2:
|
1781 | c896fe29 | bellard | case INDEX_op_nop3:
|
1782 | c896fe29 | bellard | break;
|
1783 | c896fe29 | bellard | case INDEX_op_nopn:
|
1784 | c896fe29 | bellard | args += args[0];
|
1785 | c896fe29 | bellard | goto next;
|
1786 | 5ff9d6a4 | bellard | case INDEX_op_discard:
|
1787 | 5ff9d6a4 | bellard | { |
1788 | 5ff9d6a4 | bellard | TCGTemp *ts; |
1789 | 5ff9d6a4 | bellard | ts = &s->temps[args[0]];
|
1790 | 5ff9d6a4 | bellard | /* mark the temporary as dead */
|
1791 | 5ff9d6a4 | bellard | if (ts->val_type != TEMP_VAL_CONST && !ts->fixed_reg) {
|
1792 | 5ff9d6a4 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
1793 | 5ff9d6a4 | bellard | s->reg_to_temp[ts->reg] = -1;
|
1794 | 5ff9d6a4 | bellard | ts->val_type = TEMP_VAL_DEAD; |
1795 | 5ff9d6a4 | bellard | } |
1796 | 5ff9d6a4 | bellard | } |
1797 | 5ff9d6a4 | bellard | break;
|
1798 | c896fe29 | bellard | case INDEX_op_macro_goto:
|
1799 | c896fe29 | bellard | macro_op_index = op_index; /* only used for exceptions */
|
1800 | c896fe29 | bellard | op_index = args[0] - 1; |
1801 | c896fe29 | bellard | args = gen_opparam_buf + args[1];
|
1802 | c896fe29 | bellard | goto next;
|
1803 | c896fe29 | bellard | case INDEX_op_macro_end:
|
1804 | c896fe29 | bellard | macro_op_index = -1; /* only used for exceptions */ |
1805 | c896fe29 | bellard | op_index = args[0] - 1; |
1806 | c896fe29 | bellard | args = gen_opparam_buf + args[1];
|
1807 | c896fe29 | bellard | goto next;
|
1808 | c896fe29 | bellard | case INDEX_op_macro_start:
|
1809 | c896fe29 | bellard | /* must never happen here */
|
1810 | c896fe29 | bellard | tcg_abort(); |
1811 | c896fe29 | bellard | case INDEX_op_set_label:
|
1812 | c896fe29 | bellard | tcg_reg_alloc_bb_end(s); |
1813 | c896fe29 | bellard | tcg_out_label(s, args[0], (long)s->code_ptr); |
1814 | c896fe29 | bellard | break;
|
1815 | c896fe29 | bellard | case INDEX_op_call:
|
1816 | c896fe29 | bellard | dead_iargs = s->op_dead_iargs[op_index]; |
1817 | c896fe29 | bellard | args += tcg_reg_alloc_call(s, def, opc, args, dead_iargs); |
1818 | c896fe29 | bellard | goto next;
|
1819 | c896fe29 | bellard | case INDEX_op_end:
|
1820 | c896fe29 | bellard | goto the_end;
|
1821 | cf2be984 | blueswir1 | |
1822 | bf6247fb | blueswir1 | #ifdef CONFIG_DYNGEN_OP
|
1823 | c896fe29 | bellard | case 0 ... INDEX_op_end - 1: |
1824 | c896fe29 | bellard | /* legacy dyngen ops */
|
1825 | c896fe29 | bellard | #ifdef CONFIG_PROFILER
|
1826 | c896fe29 | bellard | { |
1827 | c896fe29 | bellard | extern int64_t dyngen_old_op_count;
|
1828 | c896fe29 | bellard | dyngen_old_op_count++; |
1829 | c896fe29 | bellard | } |
1830 | c896fe29 | bellard | #endif
|
1831 | c896fe29 | bellard | tcg_reg_alloc_bb_end(s); |
1832 | 2ba1eeb6 | pbrook | if (search_pc >= 0) { |
1833 | c896fe29 | bellard | s->code_ptr += def->copy_size; |
1834 | c896fe29 | bellard | args += def->nb_args; |
1835 | c896fe29 | bellard | } else {
|
1836 | c896fe29 | bellard | args = dyngen_op(s, opc, args); |
1837 | c896fe29 | bellard | } |
1838 | c896fe29 | bellard | goto next;
|
1839 | cf2be984 | blueswir1 | #endif
|
1840 | c896fe29 | bellard | default:
|
1841 | c896fe29 | bellard | /* Note: in order to speed up the code, it would be much
|
1842 | c896fe29 | bellard | faster to have specialized register allocator functions for
|
1843 | c896fe29 | bellard | some common argument patterns */
|
1844 | c896fe29 | bellard | dead_iargs = s->op_dead_iargs[op_index]; |
1845 | c896fe29 | bellard | tcg_reg_alloc_op(s, def, opc, args, dead_iargs); |
1846 | c896fe29 | bellard | break;
|
1847 | c896fe29 | bellard | } |
1848 | c896fe29 | bellard | args += def->nb_args; |
1849 | c896fe29 | bellard | next: ;
|
1850 | 2ba1eeb6 | pbrook | if (search_pc >= 0 && search_pc < s->code_ptr - gen_code_buf) { |
1851 | 2ba1eeb6 | pbrook | if (macro_op_index >= 0) |
1852 | 2ba1eeb6 | pbrook | return macro_op_index;
|
1853 | 2ba1eeb6 | pbrook | else
|
1854 | 2ba1eeb6 | pbrook | return op_index;
|
1855 | c896fe29 | bellard | } |
1856 | c896fe29 | bellard | op_index++; |
1857 | c896fe29 | bellard | #ifndef NDEBUG
|
1858 | c896fe29 | bellard | check_regs(s); |
1859 | c896fe29 | bellard | #endif
|
1860 | c896fe29 | bellard | } |
1861 | c896fe29 | bellard | the_end:
|
1862 | c896fe29 | bellard | return -1; |
1863 | c896fe29 | bellard | } |
1864 | c896fe29 | bellard | |
1865 | c896fe29 | bellard | int dyngen_code(TCGContext *s, uint8_t *gen_code_buf)
|
1866 | c896fe29 | bellard | { |
1867 | c896fe29 | bellard | #ifdef CONFIG_PROFILER
|
1868 | c896fe29 | bellard | { |
1869 | c896fe29 | bellard | extern int64_t dyngen_op_count;
|
1870 | c896fe29 | bellard | extern int dyngen_op_count_max; |
1871 | c896fe29 | bellard | int n;
|
1872 | c896fe29 | bellard | n = (gen_opc_ptr - gen_opc_buf); |
1873 | c896fe29 | bellard | dyngen_op_count += n; |
1874 | c896fe29 | bellard | if (n > dyngen_op_count_max)
|
1875 | c896fe29 | bellard | dyngen_op_count_max = n; |
1876 | c896fe29 | bellard | } |
1877 | c896fe29 | bellard | #endif
|
1878 | c896fe29 | bellard | |
1879 | 2ba1eeb6 | pbrook | tcg_gen_code_common(s, gen_code_buf, -1);
|
1880 | c896fe29 | bellard | |
1881 | c896fe29 | bellard | /* flush instruction cache */
|
1882 | c896fe29 | bellard | flush_icache_range((unsigned long)gen_code_buf, |
1883 | c896fe29 | bellard | (unsigned long)s->code_ptr); |
1884 | c896fe29 | bellard | return s->code_ptr - gen_code_buf;
|
1885 | c896fe29 | bellard | } |
1886 | c896fe29 | bellard | |
1887 | 2ba1eeb6 | pbrook | /* Return the index of the micro operation such as the pc after is <
|
1888 | 623e265c | pbrook | offset bytes from the start of the TB. The contents of gen_code_buf must
|
1889 | 623e265c | pbrook | not be changed, though writing the same values is ok.
|
1890 | 623e265c | pbrook | Return -1 if not found. */
|
1891 | 623e265c | pbrook | int dyngen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset) |
1892 | c896fe29 | bellard | { |
1893 | 623e265c | pbrook | return tcg_gen_code_common(s, gen_code_buf, offset);
|
1894 | c896fe29 | bellard | } |