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Re: [PATCH] target/loongarch: Use actual operand size with vbsrl check


From: Richard Henderson
Subject: Re: [PATCH] target/loongarch: Use actual operand size with vbsrl check
Date: Thu, 12 Dec 2024 06:58:17 -0600
User-agent: Mozilla Thunderbird

On 12/12/24 02:22, Bibo Mao wrote:
Hardcoded 32 bytes is used for vbsrl emulation check, there is
problem when options lsx=on,lasx=off is used for vbsrl.v instruction
in TCG mode. It injects LASX exception rather LSX exception.

Here actual operand size is used.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
---
  target/loongarch/tcg/insn_trans/trans_vec.c.inc | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/loongarch/tcg/insn_trans/trans_vec.c.inc 
b/target/loongarch/tcg/insn_trans/trans_vec.c.inc
index 92b1d22e28..ba5ca98a33 100644
--- a/target/loongarch/tcg/insn_trans/trans_vec.c.inc
+++ b/target/loongarch/tcg/insn_trans/trans_vec.c.inc
@@ -5126,7 +5126,7 @@ static bool do_vbsrl_v(DisasContext *ctx, arg_vv_i *a, 
uint32_t oprsz)
  {
      int i, ofs;
- if (!check_vec(ctx, 32)) {
+    if (!check_vec(ctx, oprsz)) {
          return true;
      }
base-commit: 1cf9bc6eba7506ab6d9de635f224259225f63466

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~



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