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authorbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2004-02-16 22:11:32 +0000
committerbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2004-02-16 22:11:32 +0000
commit58fe2f10f0e9ddd63bc6004776ef6e874101e9c5 (patch)
treebf7a875031f2372018c12a62b11f7c23457aed49 /translate-all.c
parent3a1d9b8bbb693d18a346552a5e98c96ad5006ff9 (diff)
experimental code copy support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@623 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'translate-all.c')
-rw-r--r--translate-all.c49
1 files changed, 33 insertions, 16 deletions
diff --git a/translate-all.c b/translate-all.c
index 108a21f260..dd314023bc 100644
--- a/translate-all.c
+++ b/translate-all.c
@@ -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)
{