target/i386: Fix and add some comments next to SSE/AVX instructions.

Adds some comments describing what instructions correspond to decoding
table entries and fixes some existing comments which named the wrong
instruction.
Message-Id: <20230501111428.95998-1-ricky@rzhou.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 48fefaf..e0f25e7 100644 (file)
--- a/target/i386/tcg/decode-new.c.inc
+++ b/target/i386/tcg/decode-new.c.inc
@@ -274,9 +274,9 @@ static void decode_0F78(DisasContext *s, CPUX86State *env, X86OpEntry *entry, ui
 {
     static const X86OpEntry opcodes_0F78[4] = {
         {},
-        X86_OP_ENTRY3(EXTRQ_i,       V,x, None,None, I,w,  cpuid(SSE4A)),
+        X86_OP_ENTRY3(EXTRQ_i,       V,x, None,None, I,w,  cpuid(SSE4A)), /* AMD extension */
         {},
-        X86_OP_ENTRY3(INSERTQ_i,     V,x, U,x, I,w,        cpuid(SSE4A)),
+        X86_OP_ENTRY3(INSERTQ_i,     V,x, U,x, I,w,        cpuid(SSE4A)), /* AMD extension */
     };
     *entry = *decode_by_prefix(s, opcodes_0F78);
 }
@@ -284,9 +284,9 @@ static void decode_0F78(DisasContext *s, CPUX86State *env, X86OpEntry *entry, ui
 static void decode_0F79(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
 {
     if (s->prefix & PREFIX_REPNZ) {
-        entry->gen = gen_INSERTQ_r;
+        entry->gen = gen_INSERTQ_r; /* AMD extension */
     } else if (s->prefix & PREFIX_DATA) {
-        entry->gen = gen_EXTRQ_r;
+        entry->gen = gen_EXTRQ_r; /* AMD extension */
     } else {
         entry->gen = NULL;
     };
@@ -660,15 +660,15 @@ static void decode_0F10(DisasContext *s, CPUX86State *env, X86OpEntry *entry, ui
 static void decode_0F11(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
 {
     static const X86OpEntry opcodes_0F11_reg[4] = {
-        X86_OP_ENTRY3(MOVDQ,   W,x,  None,None, V,x, vex4), /* MOVPS */
-        X86_OP_ENTRY3(MOVDQ,   W,x,  None,None, V,x, vex4), /* MOVPD */
+        X86_OP_ENTRY3(MOVDQ,   W,x,  None,None, V,x, vex4), /* MOVUPS */
+        X86_OP_ENTRY3(MOVDQ,   W,x,  None,None, V,x, vex4), /* MOVUPD */
         X86_OP_ENTRY3(VMOVSS,  W,x,  H,x,       V,x, vex4),
         X86_OP_ENTRY3(VMOVLPx, W,x,  H,x,       V,q, vex4), /* MOVSD */
     };
 
     static const X86OpEntry opcodes_0F11_mem[4] = {
-        X86_OP_ENTRY3(MOVDQ,      W,x,  None,None, V,x, vex4), /* MOVPS */
-        X86_OP_ENTRY3(MOVDQ,      W,x,  None,None, V,x, vex4), /* MOVPD */
+        X86_OP_ENTRY3(MOVDQ,      W,x,  None,None, V,x, vex4), /* MOVUPS */
+        X86_OP_ENTRY3(MOVDQ,      W,x,  None,None, V,x, vex4), /* MOVUPD */
         X86_OP_ENTRY3(VMOVSS_st,  M,ss, None,None, V,x, vex4),
         X86_OP_ENTRY3(VMOVLPx_st, M,sd, None,None, V,x, vex4), /* MOVSD */
     };
@@ -850,9 +850,9 @@ static const X86OpEntry opcodes_0F[256] = {
     [0x17] = X86_OP_ENTRY3(VMOVHPx_st,  M,q, None,None, V,dq, vex4 p_00_66),
 
     [0x50] = X86_OP_ENTRY3(MOVMSK,     G,y, None,None, U,x, vex7 p_00_66),
-    [0x51] = X86_OP_GROUP3(sse_unary,  V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
-    [0x52] = X86_OP_GROUP3(sse_unary,  V,x, H,x, W,x, vex4_rep5 p_00_f3),
-    [0x53] = X86_OP_GROUP3(sse_unary,  V,x, H,x, W,x, vex4_rep5 p_00_f3),
+    [0x51] = X86_OP_GROUP3(sse_unary,  V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2), /* sqrtps */
+    [0x52] = X86_OP_GROUP3(sse_unary,  V,x, H,x, W,x, vex4_rep5 p_00_f3), /* rsqrtps */
+    [0x53] = X86_OP_GROUP3(sse_unary,  V,x, H,x, W,x, vex4_rep5 p_00_f3), /* rcpps */
     [0x54] = X86_OP_ENTRY3(PAND,       V,x, H,x, W,x,  vex4 p_00_66), /* vand */
     [0x55] = X86_OP_ENTRY3(PANDN,      V,x, H,x, W,x,  vex4 p_00_66), /* vandn */
     [0x56] = X86_OP_ENTRY3(POR,        V,x, H,x, W,x,  vex4 p_00_66), /* vor */
@@ -890,7 +890,7 @@ static const X86OpEntry opcodes_0F[256] = {
 
     [0x58] = X86_OP_ENTRY3(VADD,       V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
     [0x59] = X86_OP_ENTRY3(VMUL,       V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
-    [0x5a] = X86_OP_GROUP3(sse_unary,  V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
+    [0x5a] = X86_OP_GROUP3(sse_unary,  V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2), /* CVTPS2PD */
     [0x5b] = X86_OP_GROUP0(0F5B),
     [0x5c] = X86_OP_ENTRY3(VSUB,       V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
     [0x5d] = X86_OP_ENTRY3(VMIN,       V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),