X86 instruction FTST was incorrectly overwriting ST0 instead of FT0 (#1372)

* X86 instruction FTST was incorrectly overwriting ST0 instead of FT0 * credits update
2021-05-08 12:45:14 +02:00
parent 47ecfc1b2c
commit f27c6fa655
2 changed files with 2 additions and 1 deletions
--- a/qemu/target/i386/fpu_helper.c
+++ b/qemu/target/i386/fpu_helper.c
@ -570,7 +570,7 @@ void helper_fldz_FT0(CPUX86State *env)
 {
    //FT0 = floatx80_zero;
    floatx80 zero = { 0x0000000000000000LL, 0x0000 };
-    ST0 = zero;
+    FT0 = zero;
 }

 uint32_t helper_fnstsw(CPUX86State *env)