Since this is not a high-performance path, just use a helper to
flip the E bit and force a lookup in the hash table since the
flags have changed.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
target-arm/helper.h | 1 +
target-arm/op_helper.c | 5 +++++
target-arm/translate.c | 12 ++++++------
3 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/target-arm/helper.h b/target-arm/helper.h
index b63fd0f..8b66e31 100644
--- a/target-arm/helper.h
+++ b/target-arm/helper.h
@@ -48,6 +48,7 @@ DEF_HELPER_FLAGS_3(sel_flags, TCG_CALL_NO_RWG_SE,
i32, i32, i32, i32)
DEF_HELPER_2(exception_internal, void, env, i32)
DEF_HELPER_3(exception_with_syndrome, void, env, i32, i32)
+DEF_HELPER_1(setend, void, env)
DEF_HELPER_1(wfi, void, env)
DEF_HELPER_1(wfe, void, env)
diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c
index 9c1ef52..30eea14 100644
--- a/target-arm/op_helper.c
+++ b/target-arm/op_helper.c
@@ -209,6 +209,11 @@ uint32_t HELPER(usat16)(CPUARMState *env, uint32_t x,
uint32_t shift)
return res;
}
+void HELPER(setend)(CPUARMState *env)
+{
+ env->uncached_cpsr ^= CPSR_E;
+}
+
void HELPER(wfi)(CPUARMState *env)
{
CPUState *cs = CPU(arm_env_get_cpu(env));
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 10030f3..56b9ad4 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -7455,9 +7455,9 @@ static void disas_arm_insn(CPUARMState * env,
DisasContext *s)
ARCH(6);
/* setend */
if (((insn >> 9) & 1) != (s->be8_op == MO_BE)) {
- /* Dynamic endianness switching not implemented. */
- qemu_log_mask(LOG_UNIMP, "arm: unimplemented setend\n");
- goto illegal_op;
+ gen_helper_setend(cpu_env);
+ gen_set_pc_im(s, s->pc);
+ s->is_jmp = DISAS_JUMP;
}
return;
} else if ((insn & 0x0fffff00) == 0x057ff000) {
@@ -10612,9 +10612,9 @@ static void disas_thumb_insn(CPUARMState *env,
DisasContext *s)
/* setend */
ARCH(6);
if (((insn >> 9) & 1) != (s->be8_op == MO_BE)) {
- /* Dynamic endianness switching not implemented. */
- qemu_log_mask(LOG_UNIMP, "arm: unimplemented setend\n");
- goto illegal_op;
+ gen_helper_setend(cpu_env);
+ gen_set_pc_im(s, s->pc);
+ s->is_jmp = DISAS_JUMP;
}
break;
case 3:
--
1.9.3
