target-xtensa: implement JX/RET0/CALLX
Group SNM0 (indirect jumps and calls).
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c
index 9e26a65..78fffc5 100644
--- a/target-xtensa/translate.c
+++ b/target-xtensa/translate.c
@@ -248,6 +248,49 @@
switch (RRR_R) {
case 0: /*SNM0*/
+ switch (CALLX_M) {
+ case 0: /*ILL*/
+ break;
+
+ case 1: /*reserved*/
+ break;
+
+ case 2: /*JR*/
+ switch (CALLX_N) {
+ case 0: /*RET*/
+ case 2: /*JX*/
+ gen_jump(dc, cpu_R[CALLX_S]);
+ break;
+
+ case 1: /*RETWw*/
+ HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
+ break;
+
+ case 3: /*reserved*/
+ break;
+ }
+ break;
+
+ case 3: /*CALLX*/
+ switch (CALLX_N) {
+ case 0: /*CALLX0*/
+ {
+ TCGv_i32 tmp = tcg_temp_new_i32();
+ tcg_gen_mov_i32(tmp, cpu_R[CALLX_S]);
+ tcg_gen_movi_i32(cpu_R[0], dc->next_pc);
+ gen_jump(dc, tmp);
+ tcg_temp_free(tmp);
+ }
+ break;
+
+ case 1: /*CALLX4w*/
+ case 2: /*CALLX8w*/
+ case 3: /*CALLX12w*/
+ HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
+ break;
+ }
+ break;
+ }
break;
case 1: /*MOVSPw*/