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[PULL,05/14] target/mips: Don't check COP1X for 64 bit FP mode

Message ID 20221107235822.71458-6-philmd@linaro.org
State Accepted
Commit 2a2105a26219695c72bfc7cab9b7d37754fc0920
Headers show
Series [PULL,01/14] target/mips: Set CP0St_{KX, SX, UX} for Loongson-2F | expand

Commit Message

Philippe Mathieu-Daudé Nov. 7, 2022, 11:58 p.m. UTC 
From: Jiaxun Yang <jiaxun.yang@flygoat.com>

Some implementations (i.e. Loongson-2F) may decide to implement
a 64 bit FPU without implementing COP1X instructions.

As the eligibility of 64 bit FP instructions is already determined
by CP0St_FR, there is no need to check for COP1X again.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221102165719.190378-1-jiaxun.yang@flygoat.com>
[PMD: Add missing trailing parenthesis (buildfix)]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/mips/tcg/translate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/target/mips/tcg/translate.c b/target/mips/tcg/translate.c
index 4c4bd0823d..624e6b7786 100644
--- a/target/mips/tcg/translate.c
+++ b/target/mips/tcg/translate.c
@@ -1545,7 +1545,7 @@  void check_cop1x(DisasContext *ctx)
  */
 void check_cp1_64bitmode(DisasContext *ctx)
 {
-    if (unlikely(~ctx->hflags & (MIPS_HFLAG_F64 | MIPS_HFLAG_COP1X))) {
+    if (unlikely(~ctx->hflags & MIPS_HFLAG_F64)) {
         gen_reserved_instruction(ctx);
     }
 }