From: Richard Henderson <rth@twiddle.net>
Date: Tue, 18 Jul 2017 20:02:50 +0000 (-1000)
Subject: target/sh4: Add missing FPSCR.PR == 0 checks
X-Git-Tag: v2.10.0-rc0~35^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=61dedf2af79fb5866dc7a0f972093682f2185e17;p=thirdparty%2Fqemu.git

target/sh4: Add missing FPSCR.PR == 0 checks

Both frchg and fschg require PR == 0, otherwise undefined_operation.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170718200255.31647-26-rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---

diff --git a/target/sh4/translate.c b/target/sh4/translate.c
index 1ed0349374e..92a2c002fc8 100644
--- a/target/sh4/translate.c
+++ b/target/sh4/translate.c
@@ -473,10 +473,12 @@ static void _decode_opc(DisasContext * ctx)
         tcg_gen_movi_i32(cpu_sr_t, 1);
 	return;
     case 0xfbfd:		/* frchg */
+        CHECK_FPSCR_PR_0
 	tcg_gen_xori_i32(cpu_fpscr, cpu_fpscr, FPSCR_FR);
 	ctx->bstate = BS_STOP;
 	return;
     case 0xf3fd:		/* fschg */
+        CHECK_FPSCR_PR_0
         tcg_gen_xori_i32(cpu_fpscr, cpu_fpscr, FPSCR_SZ);
 	ctx->bstate = BS_STOP;
 	return;