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List: qemu-devel
Subject: [Qemu-devel] [PATCH v3 05/32] target-xtensa: implement RT0 group
From: Max Filippov <jcmvbkbc () gmail ! com>
Date: 2011-08-31 21:56:56
Message-ID: 1314827843-28543-6-git-send-email-jcmvbkbc () gmail ! com
[Download RAW message or body]
NEG and ABS are the only members of RT0 group.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
target-xtensa/translate.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c
index 2ff5838..dcbc0ae 100644
--- a/target-xtensa/translate.c
+++ b/target-xtensa/translate.c
@@ -255,6 +255,25 @@ static void disas_xtensa_insn(DisasContext *dc)
break;
case 6: /*RT0*/
+ switch (RRR_S) {
+ case 0: /*NEG*/
+ tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
+ break;
+
+ case 1: /*ABS*/
+ {
+ int label = gen_new_label();
+ tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
+ tcg_gen_brcondi_i32(
+ TCG_COND_GE, cpu_R[RRR_R], 0, label);
+ tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
+ gen_set_label(label);
+ }
+ break;
+
+ default: /*reserved*/
+ break;
+ }
break;
case 7: /*reserved*/
--
1.7.6
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