From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 13 Oct 2023 06:49:04 +0000 (+0200)
Subject: target/i386: move BSWAP to new decoder
X-Git-Tag: v9.1.0-rc0~115^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=37861fa519a97324dbca67ee4c5b23bec21c24db;p=thirdparty%2Fqemu.git

target/i386: move BSWAP to new decoder

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/target/i386/tcg/decode-new.c.inc b/target/i386/tcg/decode-new.c.inc
index c70a7836914..16e23ec3d88 100644
--- a/target/i386/tcg/decode-new.c.inc
+++ b/target/i386/tcg/decode-new.c.inc
@@ -1124,6 +1124,15 @@ static const X86OpEntry opcodes_0F[256] = {
     [0xc5] = X86_OP_ENTRY3(PEXTRW,     G,d, U,dq,I,b,       vex5 mmx p_00_66),
     [0xc6] = X86_OP_ENTRY4(VSHUF,      V,x, H,x, W,x,       vex4 p_00_66),
 
+    [0xc8] = X86_OP_ENTRY1(BSWAP,     LoBits,y),
+    [0xc9] = X86_OP_ENTRY1(BSWAP,     LoBits,y),
+    [0xca] = X86_OP_ENTRY1(BSWAP,     LoBits,y),
+    [0xcb] = X86_OP_ENTRY1(BSWAP,     LoBits,y),
+    [0xcc] = X86_OP_ENTRY1(BSWAP,     LoBits,y),
+    [0xcd] = X86_OP_ENTRY1(BSWAP,     LoBits,y),
+    [0xce] = X86_OP_ENTRY1(BSWAP,     LoBits,y),
+    [0xcf] = X86_OP_ENTRY1(BSWAP,     LoBits,y),
+
     [0xd0] = X86_OP_ENTRY3(VADDSUB,   V,x, H,x, W,x,        vex2 cpuid(SSE3) p_66_f2),
     [0xd1] = X86_OP_ENTRY3(PSRLW_r,   V,x, H,x, W,x,        vex4 mmx avx2_256 p_00_66),
     [0xd2] = X86_OP_ENTRY3(PSRLD_r,   V,x, H,x, W,x,        vex4 mmx avx2_256 p_00_66),
diff --git a/target/i386/tcg/emit.c.inc b/target/i386/tcg/emit.c.inc
index a9e32516afd..befde6677be 100644
--- a/target/i386/tcg/emit.c.inc
+++ b/target/i386/tcg/emit.c.inc
@@ -1310,6 +1310,17 @@ static void gen_BOUND(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode)
     }
 }
 
+static void gen_BSWAP(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode)
+{
+#ifdef TARGET_X86_64
+    if (s->dflag == MO_64) {
+        tcg_gen_bswap64_i64(s->T0, s->T0);
+        return;
+    }
+#endif
+    tcg_gen_bswap32_tl(s->T0, s->T0, TCG_BSWAP_OZ);
+}
+
 static void gen_BZHI(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode)
 {
     MemOp ot = decode->op[0].ot;
diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index b1c1aecf71e..751ec5d0f1a 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -3207,7 +3207,9 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
 #ifndef CONFIG_USER_ONLY
         use_new &= b <= limit;
 #endif
-        if (use_new && (b >= 0x138 && b <= 0x19f)) {
+        if (use_new &&
+            ((b >= 0x138 && b <= 0x19f) ||
+             (b >= 0x1c8 && b <= 0x1cf))) {
             disas_insn_new(s, cpu, b);
             return true;
         }