@@ -8454,6 +8454,10 @@ static void i386_trblock_init_globals(DisasContextBase *dcbase, CPUState *cpu)
cpu_cc_srcT = tcg_temp_local_new();
}
+static void i386_trblock_tb_start(DisasContextBase *db, CPUState *cpu)
+{
+}
+
static void i386_trblock_insn_start(DisasContextBase *dcbase, CPUState *cpu)
{
DisasContext *dc = container_of(dcbase, DisasContext, base);
@@ -8472,7 +8476,7 @@ static BreakpointCheckType i386_trblock_breakpoint_check(
/* The address covered by the breakpoint must be included in
[tb->pc, tb->pc + tb->size) in order to for it to be
properly cleared -- thus we increment the PC here so that
- the logic setting tb->size below does the right thing. */
+ the generic logic setting tb->size later does the right thing. */
dc->base.pc_next += 1;
return BC_HIT_TB;
} else {
@@ -8544,111 +8548,23 @@ static void i386_trblock_disas_log(const DisasContextBase *dcbase,
}
+static const TranslatorOps i386_trblock_ops = {
+ .init_disas_context = i386_trblock_init_disas_context,
+ .init_globals = i386_trblock_init_globals,
+ .tb_start = i386_trblock_tb_start,
+ .insn_start = i386_trblock_insn_start,
+ .breakpoint_check = i386_trblock_breakpoint_check,
+ .translate_insn = i386_trblock_translate_insn,
+ .tb_stop = i386_trblock_tb_stop,
+ .disas_log = i386_trblock_disas_log,
+};
+
/* generate intermediate code for basic block 'tb'. */
void gen_intermediate_code(CPUState *cpu, TranslationBlock *tb)
{
- DisasContext dc1, *dc = &dc1;
- int num_insns;
- int max_insns;
-
- /* generate intermediate code */
- dc->base.singlestep_enabled = cpu->singlestep_enabled;
- dc->base.tb = tb;
- dc->base.is_jmp = DISAS_NEXT;
- dc->base.pc_first = tb->pc;
- dc->base.pc_next = dc->base.pc_first;
- i386_trblock_init_disas_context(&dc->base, cpu);
-
- i386_trblock_init_globals(&dc->base, cpu);
-
- num_insns = 0;
- max_insns = tb->cflags & CF_COUNT_MASK;
- if (max_insns == 0) {
- max_insns = CF_COUNT_MASK;
- }
- if (max_insns > TCG_MAX_INSNS) {
- max_insns = TCG_MAX_INSNS;
- }
-
- gen_tb_start(tb);
- for(;;) {
- i386_trblock_insn_start(&dc->base, cpu);
- num_insns++;
-
- if (unlikely(!QTAILQ_EMPTY(&cpu->breakpoints))) {
- CPUBreakpoint *bp;
- QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) {
- if (bp->pc == dc->base.pc_next) {
- BreakpointCheckType bp_check =
- i386_trblock_breakpoint_check(&dc->base, cpu, bp);
- switch (bp_check) {
- case BC_MISS:
- /* Target ignored this breakpoint, go to next */
- break;
- case BC_HIT_INSN:
- /* Hit, keep translating */
- /*
- * TODO: if we're never going to have more than one
- * BP in a single address, we can simply use a
- * bool here.
- */
- goto done_breakpoints;
- case BC_HIT_TB:
- /* Hit, end TB */
- goto done_generating;
- default:
- g_assert_not_reached();
- }
- }
- }
- }
- done_breakpoints:
-
- if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) {
- gen_io_start();
- }
-
- dc->base.pc_next = i386_trblock_translate_insn(&dc->base, cpu);
- /* stop translation if indicated */
- if (dc->base.is_jmp) {
- break;
- }
- /* if single step mode, we generate only one instruction and
- generate an exception */
- if (dc->base.singlestep_enabled) {
- dc->base.is_jmp = DISAS_TOO_MANY;
- break;
- }
- /* if too long translation, stop generation too */
- if (tcg_op_buf_full() ||
- num_insns >= max_insns) {
- dc->base.is_jmp = DISAS_TOO_MANY;
- break;
- }
- if (singlestep) {
- dc->base.is_jmp = DISAS_TOO_MANY;
- break;
- }
- }
- i386_trblock_tb_stop(&dc->base, cpu);
- if (tb->cflags & CF_LAST_IO)
- gen_io_end();
-done_generating:
- gen_tb_end(tb, num_insns);
-
-#ifdef DEBUG_DISAS
- if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
- && qemu_log_in_addr_range(dc->base.pc_first)) {
- qemu_log_lock();
- qemu_log("----------------\n");
- i386_trblock_disas_log(&dc->base, cpu);
- qemu_log("\n");
- qemu_log_unlock();
- }
-#endif
+ DisasContext dc1;
- tb->size = dc->base.pc_next - dc->base.pc_first;
- tb->icount = num_insns;
+ translate_block(&i386_trblock_ops, &dc1.base, cpu, tb);
}
void restore_state_to_opc(CPUX86State *env, TranslationBlock *tb,
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> --- target/i386/translate.c | 120 +++++++---------------------------------------- 1 file changed, 18 insertions(+), 102 deletions(-)