root / translate-all.c @ e62b5b13
History | View | Annotate | Download (7.9 kB)
1 |
/*
|
---|---|
2 |
* Host code generation
|
3 |
*
|
4 |
* Copyright (c) 2003 Fabrice Bellard
|
5 |
*
|
6 |
* This library is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU Lesser General Public
|
8 |
* License as published by the Free Software Foundation; either
|
9 |
* version 2 of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This library is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 |
* Lesser General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU Lesser General Public
|
17 |
* License along with this library; if not, write to the Free Software
|
18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
19 |
*/
|
20 |
#include <stdarg.h> |
21 |
#include <stdlib.h> |
22 |
#include <stdio.h> |
23 |
#include <string.h> |
24 |
#include <inttypes.h> |
25 |
|
26 |
#include "config.h" |
27 |
|
28 |
#define NO_CPU_IO_DEFS
|
29 |
#include "cpu.h" |
30 |
#include "exec-all.h" |
31 |
#include "disas.h" |
32 |
#include "tcg.h" |
33 |
|
34 |
/* code generation context */
|
35 |
TCGContext tcg_ctx; |
36 |
|
37 |
uint16_t gen_opc_buf[OPC_BUF_SIZE]; |
38 |
TCGArg gen_opparam_buf[OPPARAM_BUF_SIZE]; |
39 |
|
40 |
target_ulong gen_opc_pc[OPC_BUF_SIZE]; |
41 |
uint8_t gen_opc_instr_start[OPC_BUF_SIZE]; |
42 |
#if defined(TARGET_I386)
|
43 |
uint8_t gen_opc_cc_op[OPC_BUF_SIZE]; |
44 |
#elif defined(TARGET_SPARC)
|
45 |
target_ulong gen_opc_npc[OPC_BUF_SIZE]; |
46 |
target_ulong gen_opc_jump_pc[2];
|
47 |
#elif defined(TARGET_MIPS) || defined(TARGET_SH4)
|
48 |
uint32_t gen_opc_hflags[OPC_BUF_SIZE]; |
49 |
#endif
|
50 |
|
51 |
int code_copy_enabled = 1; |
52 |
|
53 |
#ifdef CONFIG_PROFILER
|
54 |
int64_t dyngen_tb_count1; |
55 |
int64_t dyngen_tb_count; |
56 |
int64_t dyngen_op_count; |
57 |
int64_t dyngen_old_op_count; |
58 |
int64_t dyngen_tcg_del_op_count; |
59 |
int dyngen_op_count_max;
|
60 |
int64_t dyngen_code_in_len; |
61 |
int64_t dyngen_code_out_len; |
62 |
int64_t dyngen_interm_time; |
63 |
int64_t dyngen_code_time; |
64 |
int64_t dyngen_restore_count; |
65 |
int64_t dyngen_restore_time; |
66 |
#endif
|
67 |
|
68 |
/* XXX: suppress that */
|
69 |
unsigned long code_gen_max_block_size(void) |
70 |
{ |
71 |
static unsigned long max; |
72 |
|
73 |
if (max == 0) { |
74 |
#define DEF(s, n, copy_size) max = copy_size > max? copy_size : max;
|
75 |
#include "tcg-opc.h" |
76 |
#undef DEF
|
77 |
max *= OPC_MAX_SIZE; |
78 |
} |
79 |
|
80 |
return max;
|
81 |
} |
82 |
|
83 |
void cpu_gen_init(void) |
84 |
{ |
85 |
tcg_context_init(&tcg_ctx); |
86 |
tcg_set_frame(&tcg_ctx, TCG_AREG0, offsetof(CPUState, temp_buf), |
87 |
128 * sizeof(long)); |
88 |
} |
89 |
|
90 |
/* return non zero if the very first instruction is invalid so that
|
91 |
the virtual CPU can trigger an exception.
|
92 |
|
93 |
'*gen_code_size_ptr' contains the size of the generated code (host
|
94 |
code).
|
95 |
*/
|
96 |
int cpu_gen_code(CPUState *env, TranslationBlock *tb, int *gen_code_size_ptr) |
97 |
{ |
98 |
TCGContext *s = &tcg_ctx; |
99 |
uint8_t *gen_code_buf; |
100 |
int gen_code_size;
|
101 |
#ifdef CONFIG_PROFILER
|
102 |
int64_t ti; |
103 |
#endif
|
104 |
|
105 |
#ifdef CONFIG_PROFILER
|
106 |
dyngen_tb_count1++; /* includes aborted translations because of
|
107 |
exceptions */
|
108 |
ti = profile_getclock(); |
109 |
#endif
|
110 |
tcg_func_start(s); |
111 |
|
112 |
if (gen_intermediate_code(env, tb) < 0) |
113 |
return -1; |
114 |
|
115 |
/* generate machine code */
|
116 |
gen_code_buf = tb->tc_ptr; |
117 |
tb->tb_next_offset[0] = 0xffff; |
118 |
tb->tb_next_offset[1] = 0xffff; |
119 |
s->tb_next_offset = tb->tb_next_offset; |
120 |
#ifdef USE_DIRECT_JUMP
|
121 |
s->tb_jmp_offset = tb->tb_jmp_offset; |
122 |
s->tb_next = NULL;
|
123 |
/* the following two entries are optional (only used for string ops) */
|
124 |
/* XXX: not used ? */
|
125 |
tb->tb_jmp_offset[2] = 0xffff; |
126 |
tb->tb_jmp_offset[3] = 0xffff; |
127 |
#else
|
128 |
s->tb_jmp_offset = NULL;
|
129 |
s->tb_next = tb->tb_next; |
130 |
#endif
|
131 |
|
132 |
#ifdef CONFIG_PROFILER
|
133 |
dyngen_tb_count++; |
134 |
dyngen_interm_time += profile_getclock() - ti; |
135 |
dyngen_code_time -= profile_getclock(); |
136 |
#endif
|
137 |
gen_code_size = dyngen_code(s, gen_code_buf); |
138 |
*gen_code_size_ptr = gen_code_size; |
139 |
#ifdef CONFIG_PROFILER
|
140 |
dyngen_code_time += profile_getclock(); |
141 |
dyngen_code_in_len += tb->size; |
142 |
dyngen_code_out_len += gen_code_size; |
143 |
#endif
|
144 |
|
145 |
#ifdef DEBUG_DISAS
|
146 |
if (loglevel & CPU_LOG_TB_OUT_ASM) {
|
147 |
fprintf(logfile, "OUT: [size=%d]\n", *gen_code_size_ptr);
|
148 |
disas(logfile, tb->tc_ptr, *gen_code_size_ptr); |
149 |
fprintf(logfile, "\n");
|
150 |
fflush(logfile); |
151 |
} |
152 |
#endif
|
153 |
return 0; |
154 |
} |
155 |
|
156 |
/* The cpu state corresponding to 'searched_pc' is restored.
|
157 |
*/
|
158 |
int cpu_restore_state(TranslationBlock *tb,
|
159 |
CPUState *env, unsigned long searched_pc, |
160 |
void *puc)
|
161 |
{ |
162 |
TCGContext *s = &tcg_ctx; |
163 |
int j;
|
164 |
unsigned long tc_ptr; |
165 |
#ifdef CONFIG_PROFILER
|
166 |
int64_t ti; |
167 |
#endif
|
168 |
|
169 |
#ifdef CONFIG_PROFILER
|
170 |
ti = profile_getclock(); |
171 |
#endif
|
172 |
tcg_func_start(s); |
173 |
|
174 |
if (gen_intermediate_code_pc(env, tb) < 0) |
175 |
return -1; |
176 |
|
177 |
/* find opc index corresponding to search_pc */
|
178 |
tc_ptr = (unsigned long)tb->tc_ptr; |
179 |
if (searched_pc < tc_ptr)
|
180 |
return -1; |
181 |
|
182 |
s->tb_next_offset = tb->tb_next_offset; |
183 |
#ifdef USE_DIRECT_JUMP
|
184 |
s->tb_jmp_offset = tb->tb_jmp_offset; |
185 |
s->tb_next = NULL;
|
186 |
#else
|
187 |
s->tb_jmp_offset = NULL;
|
188 |
s->tb_next = tb->tb_next; |
189 |
#endif
|
190 |
j = dyngen_code_search_pc(s, (uint8_t *)tc_ptr, searched_pc - tc_ptr); |
191 |
if (j < 0) |
192 |
return -1; |
193 |
/* now find start of instruction before */
|
194 |
while (gen_opc_instr_start[j] == 0) |
195 |
j--; |
196 |
#if defined(TARGET_I386)
|
197 |
{ |
198 |
int cc_op;
|
199 |
#ifdef DEBUG_DISAS
|
200 |
if (loglevel & CPU_LOG_TB_OP) {
|
201 |
int i;
|
202 |
fprintf(logfile, "RESTORE:\n");
|
203 |
for(i=0;i<=j; i++) { |
204 |
if (gen_opc_instr_start[i]) {
|
205 |
fprintf(logfile, "0x%04x: " TARGET_FMT_lx "\n", i, gen_opc_pc[i]); |
206 |
} |
207 |
} |
208 |
fprintf(logfile, "spc=0x%08lx j=0x%x eip=" TARGET_FMT_lx " cs_base=%x\n", |
209 |
searched_pc, j, gen_opc_pc[j] - tb->cs_base, |
210 |
(uint32_t)tb->cs_base); |
211 |
} |
212 |
#endif
|
213 |
env->eip = gen_opc_pc[j] - tb->cs_base; |
214 |
cc_op = gen_opc_cc_op[j]; |
215 |
if (cc_op != CC_OP_DYNAMIC)
|
216 |
env->cc_op = cc_op; |
217 |
} |
218 |
#elif defined(TARGET_ARM)
|
219 |
env->regs[15] = gen_opc_pc[j];
|
220 |
#elif defined(TARGET_SPARC)
|
221 |
{ |
222 |
target_ulong npc; |
223 |
env->pc = gen_opc_pc[j]; |
224 |
npc = gen_opc_npc[j]; |
225 |
if (npc == 1) { |
226 |
/* dynamic NPC: already stored */
|
227 |
} else if (npc == 2) { |
228 |
target_ulong t2 = (target_ulong)(unsigned long)puc; |
229 |
/* jump PC: use T2 and the jump targets of the translation */
|
230 |
if (t2)
|
231 |
env->npc = gen_opc_jump_pc[0];
|
232 |
else
|
233 |
env->npc = gen_opc_jump_pc[1];
|
234 |
} else {
|
235 |
env->npc = npc; |
236 |
} |
237 |
} |
238 |
#elif defined(TARGET_PPC)
|
239 |
{ |
240 |
int type, c;
|
241 |
/* for PPC, we need to look at the micro operation to get the
|
242 |
access type */
|
243 |
env->nip = gen_opc_pc[j]; |
244 |
c = gen_opc_buf[j]; |
245 |
switch(c) {
|
246 |
#if defined(CONFIG_USER_ONLY)
|
247 |
#define CASE3(op)\
|
248 |
case INDEX_op_ ## op ## _raw |
249 |
#else
|
250 |
#define CASE3(op)\
|
251 |
case INDEX_op_ ## op ## _user:\ |
252 |
case INDEX_op_ ## op ## _kernel:\ |
253 |
case INDEX_op_ ## op ## _hypv |
254 |
#endif
|
255 |
|
256 |
CASE3(stfd): |
257 |
CASE3(stfs): |
258 |
CASE3(lfd): |
259 |
CASE3(lfs): |
260 |
type = ACCESS_FLOAT; |
261 |
break;
|
262 |
CASE3(lwarx): |
263 |
type = ACCESS_RES; |
264 |
break;
|
265 |
CASE3(stwcx): |
266 |
type = ACCESS_RES; |
267 |
break;
|
268 |
CASE3(eciwx): |
269 |
CASE3(ecowx): |
270 |
type = ACCESS_EXT; |
271 |
break;
|
272 |
default:
|
273 |
type = ACCESS_INT; |
274 |
break;
|
275 |
} |
276 |
env->access_type = type; |
277 |
} |
278 |
#elif defined(TARGET_M68K)
|
279 |
env->pc = gen_opc_pc[j]; |
280 |
#elif defined(TARGET_MIPS)
|
281 |
env->PC[env->current_tc] = gen_opc_pc[j]; |
282 |
env->hflags &= ~MIPS_HFLAG_BMASK; |
283 |
env->hflags |= gen_opc_hflags[j]; |
284 |
#elif defined(TARGET_ALPHA)
|
285 |
env->pc = gen_opc_pc[j]; |
286 |
#elif defined(TARGET_SH4)
|
287 |
env->pc = gen_opc_pc[j]; |
288 |
env->flags = gen_opc_hflags[j]; |
289 |
#elif defined(TARGET_CRIS)
|
290 |
env->pregs[PR_ERP] = gen_opc_pc[j]; |
291 |
#endif
|
292 |
|
293 |
#ifdef CONFIG_PROFILER
|
294 |
dyngen_restore_time += profile_getclock() - ti; |
295 |
dyngen_restore_count++; |
296 |
#endif
|
297 |
return 0; |
298 |
} |