Implement ffreep %st(0). Fixes #109718.

git-svn-id: svn://svn.valgrind.org/vex/trunk@1305

diff --git a/VEX/priv/guest-x86/toIR.c b/VEX/priv/guest-x86/toIR.c
index effd76819bbbbe9d3e8a71406dbaf4a6e7f784c7..449546a46326d0a5277c64c7af2f67bda672b1ca 100644 (file)
--- a/VEX/priv/guest-x86/toIR.c
+++ b/VEX/priv/guest-x86/toIR.c
@@ -4787,6 +4787,12 @@ UInt dis_FPU ( Bool* decode_ok, UChar sorb, Int delta )
          delta++;
          switch (modrm) {
 
+            case 0xC0: /* FFREEP %st(0) */
+               DIP("ffreep %%st(%d)\n", 0);
+               put_ST_TAG ( 0, mkU8(0) );
+               fp_pop();
+               break;
+
             case 0xE0: /* FNSTSW %ax */
                DIP("fnstsw %%ax\n");
                /* Get the FPU status word value and dump it in %AX. */