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List: qemu-devel
Subject: [Qemu-devel] [PATCH v3 08/32] target-xtensa: implement JX/RET0/CALLX
From: Max Filippov <jcmvbkbc () gmail ! com>
Date: 2011-08-31 21:56:59
Message-ID: 1314827843-28543-9-git-send-email-jcmvbkbc () gmail ! com
[Download RAW message or body]
Group SNM0 (indirect jumps and calls).
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
target-xtensa/translate.c | 43 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 43 insertions(+), 0 deletions(-)
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c
index c6ebb3d..400c995 100644
--- a/target-xtensa/translate.c
+++ b/target-xtensa/translate.c
@@ -248,6 +248,49 @@ static void disas_xtensa_insn(DisasContext *dc)
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*/
--
1.7.6
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