target/i386/tcg: move and expand misplaced comment

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 d2c024ea342796e582e1ddfaa28eda66e06a0a47..e7ffd3a98481889cade1f45c5d5a9f5de73b9fac 100644 (file)
--- a/target/i386/tcg/decode-new.c.inc
+++ b/target/i386/tcg/decode-new.c.inc
@@ -1878,16 +1878,11 @@ static const X86OpEntry opcodes_root[256] = {
 #undef vex12
 #undef vex13
 
-/*
- * Decode the fixed part of the opcode and place the last
- * in b.
- */
 static void decode_root(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
 {
     *entry = opcodes_root[*b];
 }
 
-
 static int decode_modrm(DisasContext *s, CPUX86State *env,
                         X86DecodedInsn *decode, X86DecodedOp *op)
 {
@@ -2222,6 +2217,10 @@ static bool decode_insn(DisasContext *s, CPUX86State *env, X86DecodeFunc decode_
 {
     X86OpEntry *e = &decode->e;
 
+    /*
+     * Each step decodes part of the opcode and leaves the last not-fully-decoded
+     * byte in decode->b.  If the modrm byte is read, it is placed in s->modrm.
+     */
     decode_func(s, env, e, &decode->b);
     while (e->is_decode) {
         e->is_decode = false;