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i386: feni and fdisi are nops on the 387+ (nw)

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cracyc 2019-12-21 22:31:02 -06:00 committed by Vas Crabb
parent ba06ed32c5
commit 95318ad835
1 changed files with 2 additions and 0 deletions
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src/devices/cpu/i386/x87ops.hxx
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@ -5225,6 +5225,8 @@ void i386_device::build_x87_opcode_table_db()
case 0xc8: case 0xc9: case 0xca: case 0xcb: case 0xcc: case 0xcd: case 0xce: case 0xcf: ptr = &i386_device::x87_fcmovne_sti; break;
case 0xd0: case 0xd1: case 0xd2: case 0xd3: case 0xd4: case 0xd5: case 0xd6: case 0xd7: ptr = &i386_device::x87_fcmovnbe_sti; break;
case 0xd8: case 0xd9: case 0xda: case 0xdb: case 0xdc: case 0xdd: case 0xde: case 0xdf: ptr = &i386_device::x87_fcmovnu_sti; break;
case 0xe0: ptr = &i386_device::x87_fnop; break; /* FENI */
case 0xe1: ptr = &i386_device::x87_fnop; break; /* FDISI */
case 0xe2: ptr = &i386_device::x87_fclex; break;
case 0xe3: ptr = &i386_device::x87_finit; break;
case 0xe4: ptr = &i386_device::x87_fnop; break; /* FSETPM */