diff options
Diffstat (limited to 'src/emu/x64run64.c')
| -rw-r--r-- | src/emu/x64run64.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/emu/x64run64.c b/src/emu/x64run64.c index af503324..3413fc81 100644 --- a/src/emu/x64run64.c +++ b/src/emu/x64run64.c @@ -172,6 +172,32 @@ int Run64(x64emu_t *emu, rex_t rex, int seg) return 1; } break; + + case 0x2E: /* UCOMISD Gx, Ex */ + // no special check... + case 0x2F: /* COMISD Gx, Ex */ + switch(rep) { + case 0: + RESET_FLAGS(emu); + nextop = F8; + GETEX_OFFS(0, tlsdata); + GETGX; + if(isnan(GX->d[0]) || isnan(EX->d[0])) { + SET_FLAG(F_ZF); SET_FLAG(F_PF); SET_FLAG(F_CF); + } else if(isgreater(GX->d[0], EX->d[0])) { + CLEAR_FLAG(F_ZF); CLEAR_FLAG(F_PF); CLEAR_FLAG(F_CF); + } else if(isless(GX->d[0], EX->d[0])) { + CLEAR_FLAG(F_ZF); CLEAR_FLAG(F_PF); SET_FLAG(F_CF); + } else { + SET_FLAG(F_ZF); CLEAR_FLAG(F_PF); CLEAR_FLAG(F_CF); + } + CLEAR_FLAG(F_OF); CLEAR_FLAG(F_AF); CLEAR_FLAG(F_SF); + break; + default: + return 1; + } + break; + case 0x59: switch(rep) { |