@@ -11244,6 +11244,9 @@ static int aarch64_tr_init_disas_context(DisasContextBase *dcbase,
dc->is_ldex = false;
dc->ss_same_el = (arm_debug_target_el(env) == dc->current_el);
+ dc->next_page_start =
+ (dc->base.pc_first & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
+
init_tmp_a64_array(dc);
return max_insns;
@@ -11281,12 +11284,43 @@ static bool aarch64_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cpu,
return true;
}
+static void aarch64_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu)
+{
+ DisasContext *dc = container_of(dcbase, DisasContext, base);
+ CPUARMState *env = cpu->env_ptr;
+
+ if (dc->ss_active && !dc->pstate_ss) {
+ /* Singlestep state is Active-pending.
+ * If we're in this state at the start of a TB then either
+ * a) we just took an exception to an EL which is being debugged
+ * and this is the first insn in the exception handler
+ * b) debug exceptions were masked and we just unmasked them
+ * without changing EL (eg by clearing PSTATE.D)
+ * In either case we're going to take a swstep exception in the
+ * "did not step an insn" case, and so the syndrome ISV and EX
+ * bits should be zero.
+ */
+ assert(dc->base.num_insns == 1);
+ gen_exception(EXCP_UDEF, syn_swstep(dc->ss_same_el, 0, 0),
+ default_exception_el(dc));
+ dc->base.is_jmp = DISAS_NORETURN;
+ } else {
+ disas_a64_insn(env, dc);
+ }
+
+ if (dc->base.is_jmp == DISAS_NEXT) {
+ if (dc->ss_active || dc->pc >= dc->next_page_start) {
+ dc->base.is_jmp = DISAS_TOO_MANY;
+ }
+ }
+
+ dc->base.pc_next = dc->pc;
+}
+
void gen_intermediate_code_a64(DisasContextBase *dcbase, CPUState *cs,
TranslationBlock *tb)
{
- CPUARMState *env = cs->env_ptr;
DisasContext *dc = container_of(dcbase, DisasContext, base);
- target_ulong next_page_start;
int max_insns;
dc->base.tb = tb;
@@ -11296,7 +11330,6 @@ void gen_intermediate_code_a64(DisasContextBase *dcbase, CPUState *cs,
dc->base.num_insns = 0;
dc->base.singlestep_enabled = cs->singlestep_enabled;
- next_page_start = (dc->base.pc_first & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
max_insns = dc->base.tb->cflags & CF_COUNT_MASK;
if (max_insns == 0) {
max_insns = CF_COUNT_MASK;
@@ -11332,42 +11365,24 @@ void gen_intermediate_code_a64(DisasContextBase *dcbase, CPUState *cs,
gen_io_start();
}
- if (dc->ss_active && !dc->pstate_ss) {
- /* Singlestep state is Active-pending.
- * If we're in this state at the start of a TB then either
- * a) we just took an exception to an EL which is being debugged
- * and this is the first insn in the exception handler
- * b) debug exceptions were masked and we just unmasked them
- * without changing EL (eg by clearing PSTATE.D)
- * In either case we're going to take a swstep exception in the
- * "did not step an insn" case, and so the syndrome ISV and EX
- * bits should be zero.
- */
- assert(dc->base.num_insns == 1);
- gen_exception(EXCP_UDEF, syn_swstep(dc->ss_same_el, 0, 0),
- default_exception_el(dc));
- dc->base.is_jmp = DISAS_NORETURN;
- break;
- }
-
- disas_a64_insn(env, dc);
+ aarch64_tr_translate_insn(&dc->base, cs);
if (tcg_check_temp_count()) {
fprintf(stderr, "TCG temporary leak before "TARGET_FMT_lx"\n",
dc->pc);
}
+ if (!dc->base.is_jmp && (tcg_op_buf_full() || cs->singlestep_enabled ||
+ singlestep || dc->base.num_insns >= max_insns)) {
+ dc->base.is_jmp = DISAS_TOO_MANY;
+ }
+
/* Translation stops when a conditional branch is encountered.
* Otherwise the subsequent code could get translated several times.
* Also stop translation when a page boundary is reached. This
* ensures prefetch aborts occur at the right place.
*/
- } while (!dc->base.is_jmp && !tcg_op_buf_full() &&
- !cs->singlestep_enabled &&
- !singlestep &&
- !dc->ss_active &&
- dc->pc < next_page_start &&
- dc->base.num_insns < max_insns);
+ } while (!dc->base.is_jmp);
if (dc->base.tb->cflags & CF_LAST_IO) {
gen_io_end();