Incrementally paves the way towards using the generic instruction translation
loop.
Signed-off-by: Lluís Vilanova <vilan...@ac.upc.edu>
---
target/i386/translate.c | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/target/i386/translate.c b/target/i386/translate.c
index 34e7cf6788..e7b46d282a 100644
--- a/target/i386/translate.c
+++ b/target/i386/translate.c
@@ -8510,8 +8510,6 @@ static target_ulong
i386_trblock_disas_insn(DisasContextBase *db, CPUState *cpu)
/* if irq were inhibited with HF_INHIBIT_IRQ_MASK, we clear
the flag and abort the translation to give the irqs a
change to be happen */
- gen_jmp_im(pc_next - dc->cs_base);
- gen_eob(dc);
db->is_jmp = DJ_TOO_MANY;
} else if ((db->tb->cflags & CF_USE_ICOUNT)
&& ((db->pc_next & TARGET_PAGE_MASK)
@@ -8524,18 +8522,24 @@ static target_ulong
i386_trblock_disas_insn(DisasContextBase *db, CPUState *cpu)
If current instruction already crossed the bound - it's ok,
because an exception hasn't stopped this code.
*/
- gen_jmp_im(pc_next - dc->cs_base);
- gen_eob(dc);
db->is_jmp = DJ_TOO_MANY;
} else if ((pc_next - db->pc_first) >= (TARGET_PAGE_SIZE - 32)) {
- gen_jmp_im(pc_next - dc->cs_base);
- gen_eob(dc);
db->is_jmp = DJ_TOO_MANY;
}
return pc_next;
}
+static void i386_trblock_tb_stop(DisasContextBase *db, CPUState *cpu)
+{
+ DisasContext *dc = container_of(db, DisasContext, base);
+
+ if (db->is_jmp == DJ_TOO_MANY) {
+ gen_jmp_im(db->pc_next - dc->cs_base);
+ gen_eob(dc);
+ }
+}
+
/* generate intermediate code for basic block 'tb'. */
void gen_intermediate_code(CPUState *cpu, TranslationBlock *tb)
{
@@ -8596,23 +8600,21 @@ void gen_intermediate_code(CPUState *cpu,
TranslationBlock *tb)
/* if single step mode, we generate only one instruction and
generate an exception */
if (db->singlestep_enabled) {
- gen_jmp_im(db->pc_next - dc->cs_base);
- gen_eob(dc);
+ db->is_jmp = DJ_TOO_MANY;
break;
}
/* if too long translation, stop generation too */
if (tcg_op_buf_full() ||
num_insns >= max_insns) {
- gen_jmp_im(db->pc_next - dc->cs_base);
- gen_eob(dc);
+ db->is_jmp = DJ_TOO_MANY;
break;
}
if (singlestep) {
- gen_jmp_im(db->pc_next - dc->cs_base);
- gen_eob(dc);
+ db->is_jmp = DJ_TOO_MANY;
break;
}
}
+ i386_trblock_tb_stop(db, cpu);
if (tb->cflags & CF_LAST_IO)
gen_io_end(cpu_env);
done_generating:
