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experimental code copy support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@623 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-02-16 22:11:32 +00:00
parent 3a1d9b8bbb
commit 58fe2f10f0
6 changed files with 1603 additions and 21 deletions
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49
translate-all.c
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@ -48,6 +48,8 @@ uint8_t gen_opc_instr_start[OPC_BUF_SIZE];
uint8_t gen_opc_cc_op[OPC_BUF_SIZE];
#endif
int code_copy_enabled = 1;
#ifdef DEBUG_DISAS
static const char *op_str[] = {
#define DEF(s, n, copy_size) #s,
@ -98,30 +100,38 @@ int cpu_gen_code(CPUState *env, TranslationBlock *tb,
uint8_t *gen_code_buf;
int gen_code_size;
if (gen_intermediate_code(env, tb) < 0)
return -1;
#ifdef USE_CODE_COPY
if (code_copy_enabled &&
cpu_gen_code_copy(env, tb, max_code_size, &gen_code_size) == 0) {
/* nothing more to do */
} else
#endif
{
if (gen_intermediate_code(env, tb) < 0)
return -1;
/* generate machine code */
tb->tb_next_offset[0] = 0xffff;
tb->tb_next_offset[1] = 0xffff;
gen_code_buf = tb->tc_ptr;
/* generate machine code */
tb->tb_next_offset[0] = 0xffff;
tb->tb_next_offset[1] = 0xffff;
gen_code_buf = tb->tc_ptr;
#ifdef USE_DIRECT_JUMP
/* the following two entries are optional (only used for string ops) */
tb->tb_jmp_offset[2] = 0xffff;
tb->tb_jmp_offset[3] = 0xffff;
/* the following two entries are optional (only used for string ops) */
tb->tb_jmp_offset[2] = 0xffff;
tb->tb_jmp_offset[3] = 0xffff;
#endif
gen_code_size = dyngen_code(gen_code_buf, tb->tb_next_offset,
gen_code_size = dyngen_code(gen_code_buf, tb->tb_next_offset,
#ifdef USE_DIRECT_JUMP
tb->tb_jmp_offset,
tb->tb_jmp_offset,
#else
NULL,
NULL,
#endif
gen_opc_buf, gen_opparam_buf);
gen_opc_buf, gen_opparam_buf);
}
*gen_code_size_ptr = gen_code_size;
#ifdef DEBUG_DISAS
if (loglevel && 0) {
if (loglevel) {
fprintf(logfile, "OUT: [size=%d]\n", *gen_code_size_ptr);
disas(logfile, gen_code_buf, *gen_code_size_ptr, 1, 0);
disas(logfile, tb->tc_ptr, *gen_code_size_ptr, 1, 0);
fprintf(logfile, "\n");
fflush(logfile);
}
@ -138,12 +148,18 @@ static const unsigned short opc_copy_size[] = {
/* The cpu state corresponding to 'searched_pc' is restored.
*/
int cpu_restore_state(TranslationBlock *tb,
CPUState *env, unsigned long searched_pc)
CPUState *env, unsigned long searched_pc,
void *puc)
{
int j, c;
unsigned long tc_ptr;
uint16_t *opc_ptr;
#ifdef USE_CODE_COPY
if (tb->cflags & CF_CODE_COPY) {
return cpu_restore_state_copy(tb, env, searched_pc, puc);
}
#endif
if (gen_intermediate_code_pc(env, tb) < 0)
return -1;
@ -190,6 +206,7 @@ int cpu_restore_state(TranslationBlock *tb,
#elif defined(TARGET_ARM)
env->regs[15] = gen_opc_pc[j];
#elif defined(TARGET_SPARC)
/* XXX: restore npc too */
env->pc = gen_opc_pc[j];
#elif defined(TARGET_PPC)
{