| //===-- X86InstrSystem.td - System Instructions ------------*- tablegen -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file describes the X86 instructions that are generally used in |
| // privileged modes. These are not typically used by the compiler, but are |
| // supported for the assembler and disassembler. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| let SchedRW = [WriteSystem] in { |
| let Defs = [RAX, RDX] in |
| def RDTSC : I<0x31, RawFrm, (outs), (ins), "rdtsc", []>, TB; |
| |
| let Defs = [RAX, RCX, RDX] in |
| def RDTSCP : I<0x01, MRM_F9, (outs), (ins), "rdtscp", []>, TB; |
| |
| // CPU flow control instructions |
| |
| let mayLoad = 1, mayStore = 0, hasSideEffects = 1, isTrap = 1 in { |
| def TRAP : I<0x0B, RawFrm, (outs), (ins), "ud2", [(trap)]>, TB; |
| |
| def UD1Wm : I<0xB9, MRMSrcMem, (outs), (ins GR16:$src1, i16mem:$src2), |
| "ud1{w} {$src2, $src1|$src1, $src2}", []>, TB, OpSize16; |
| def UD1Lm : I<0xB9, MRMSrcMem, (outs), (ins GR32:$src1, i32mem:$src2), |
| "ud1{l} {$src2, $src1|$src1, $src2}", []>, TB, OpSize32; |
| def UD1Qm : RI<0xB9, MRMSrcMem, (outs), (ins GR64:$src1, i64mem:$src2), |
| "ud1{q} {$src2, $src1|$src1, $src2}", []>, TB; |
| |
| def UD1Wr : I<0xB9, MRMSrcReg, (outs), (ins GR16:$src1, GR16:$src2), |
| "ud1{w} {$src2, $src1|$src1, $src2}", []>, TB, OpSize16; |
| def UD1Lr : I<0xB9, MRMSrcReg, (outs), (ins GR32:$src1, GR32:$src2), |
| "ud1{l} {$src2, $src1|$src1, $src2}", []>, TB, OpSize32; |
| def UD1Qr : RI<0xB9, MRMSrcReg, (outs), (ins GR64:$src1, GR64:$src2), |
| "ud1{q} {$src2, $src1|$src1, $src2}", []>, TB; |
| } |
| |
| let isTerminator = 1 in |
| def HLT : I<0xF4, RawFrm, (outs), (ins), "hlt", []>; |
| def RSM : I<0xAA, RawFrm, (outs), (ins), "rsm", []>, TB; |
| |
| // Interrupt and SysCall Instructions. |
| let Uses = [EFLAGS] in |
| def INTO : I<0xce, RawFrm, (outs), (ins), "into", []>, Requires<[Not64BitMode]>; |
| |
| def INT3 : I<0xcc, RawFrm, (outs), (ins), "int3", [(int_x86_int (i8 3))]>; |
| |
| def UBSAN_UD1 : PseudoI<(outs), (ins i32imm:$kind), [(ubsantrap (i32 timm:$kind))]>; |
| // The long form of "int $3" turns into int3 as a size optimization. |
| // FIXME: This doesn't work because InstAlias can't match immediate constants. |
| //def : InstAlias<"int\t$3", (INT3)>; |
| |
| def INT : Ii8<0xcd, RawFrm, (outs), (ins u8imm:$trap), "int\t$trap", |
| [(int_x86_int timm:$trap)]>; |
| |
| |
| def SYSCALL : I<0x05, RawFrm, (outs), (ins), "syscall", []>, TB; |
| def SYSRET : I<0x07, RawFrm, (outs), (ins), "sysret{l}", []>, TB; |
| def SYSRET64 :RI<0x07, RawFrm, (outs), (ins), "sysretq", []>, TB, |
| Requires<[In64BitMode]>; |
| |
| def SYSENTER : I<0x34, RawFrm, (outs), (ins), "sysenter", []>, TB; |
| |
| def SYSEXIT : I<0x35, RawFrm, (outs), (ins), "sysexit{l}", []>, TB; |
| def SYSEXIT64 :RI<0x35, RawFrm, (outs), (ins), "sysexitq", []>, TB, |
| Requires<[In64BitMode]>; |
| } // SchedRW |
| |
| def : Pat<(debugtrap), |
| (INT3)>, Requires<[NotPS4]>; |
| def : Pat<(debugtrap), |
| (INT (i8 0x41))>, Requires<[IsPS4]>; |
| |
| //===----------------------------------------------------------------------===// |
| // Input/Output Instructions. |
| // |
| let SchedRW = [WriteSystem] in { |
| let Defs = [AL], Uses = [DX] in |
| def IN8rr : I<0xEC, RawFrm, (outs), (ins), "in{b}\t{%dx, %al|al, dx}", []>; |
| let Defs = [AX], Uses = [DX] in |
| def IN16rr : I<0xED, RawFrm, (outs), (ins), "in{w}\t{%dx, %ax|ax, dx}", []>, |
| OpSize16; |
| let Defs = [EAX], Uses = [DX] in |
| def IN32rr : I<0xED, RawFrm, (outs), (ins), "in{l}\t{%dx, %eax|eax, dx}", []>, |
| OpSize32; |
| |
| let Defs = [AL] in |
| def IN8ri : Ii8<0xE4, RawFrm, (outs), (ins u8imm:$port), |
| "in{b}\t{$port, %al|al, $port}", []>; |
| let Defs = [AX] in |
| def IN16ri : Ii8<0xE5, RawFrm, (outs), (ins u8imm:$port), |
| "in{w}\t{$port, %ax|ax, $port}", []>, OpSize16; |
| let Defs = [EAX] in |
| def IN32ri : Ii8<0xE5, RawFrm, (outs), (ins u8imm:$port), |
| "in{l}\t{$port, %eax|eax, $port}", []>, OpSize32; |
| |
| let Uses = [DX, AL] in |
| def OUT8rr : I<0xEE, RawFrm, (outs), (ins), "out{b}\t{%al, %dx|dx, al}", []>; |
| let Uses = [DX, AX] in |
| def OUT16rr : I<0xEF, RawFrm, (outs), (ins), "out{w}\t{%ax, %dx|dx, ax}", []>, |
| OpSize16; |
| let Uses = [DX, EAX] in |
| def OUT32rr : I<0xEF, RawFrm, (outs), (ins), "out{l}\t{%eax, %dx|dx, eax}", []>, |
| OpSize32; |
| |
| let Uses = [AL] in |
| def OUT8ir : Ii8<0xE6, RawFrm, (outs), (ins u8imm:$port), |
| "out{b}\t{%al, $port|$port, al}", []>; |
| let Uses = [AX] in |
| def OUT16ir : Ii8<0xE7, RawFrm, (outs), (ins u8imm:$port), |
| "out{w}\t{%ax, $port|$port, ax}", []>, OpSize16; |
| let Uses = [EAX] in |
| def OUT32ir : Ii8<0xE7, RawFrm, (outs), (ins u8imm:$port), |
| "out{l}\t{%eax, $port|$port, eax}", []>, OpSize32; |
| |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Moves to and from debug registers |
| |
| let SchedRW = [WriteSystem] in { |
| def MOV32rd : I<0x21, MRMDestReg, (outs GR32:$dst), (ins DEBUG_REG:$src), |
| "mov{l}\t{$src, $dst|$dst, $src}", []>, TB, |
| Requires<[Not64BitMode]>; |
| def MOV64rd : I<0x21, MRMDestReg, (outs GR64:$dst), (ins DEBUG_REG:$src), |
| "mov{q}\t{$src, $dst|$dst, $src}", []>, TB, |
| Requires<[In64BitMode]>; |
| |
| def MOV32dr : I<0x23, MRMSrcReg, (outs DEBUG_REG:$dst), (ins GR32:$src), |
| "mov{l}\t{$src, $dst|$dst, $src}", []>, TB, |
| Requires<[Not64BitMode]>; |
| def MOV64dr : I<0x23, MRMSrcReg, (outs DEBUG_REG:$dst), (ins GR64:$src), |
| "mov{q}\t{$src, $dst|$dst, $src}", []>, TB, |
| Requires<[In64BitMode]>; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Moves to and from control registers |
| |
| let SchedRW = [WriteSystem] in { |
| def MOV32rc : I<0x20, MRMDestReg, (outs GR32:$dst), (ins CONTROL_REG:$src), |
| "mov{l}\t{$src, $dst|$dst, $src}", []>, TB, |
| Requires<[Not64BitMode]>; |
| def MOV64rc : I<0x20, MRMDestReg, (outs GR64:$dst), (ins CONTROL_REG:$src), |
| "mov{q}\t{$src, $dst|$dst, $src}", []>, TB, |
| Requires<[In64BitMode]>; |
| |
| def MOV32cr : I<0x22, MRMSrcReg, (outs CONTROL_REG:$dst), (ins GR32:$src), |
| "mov{l}\t{$src, $dst|$dst, $src}", []>, TB, |
| Requires<[Not64BitMode]>; |
| def MOV64cr : I<0x22, MRMSrcReg, (outs CONTROL_REG:$dst), (ins GR64:$src), |
| "mov{q}\t{$src, $dst|$dst, $src}", []>, TB, |
| Requires<[In64BitMode]>; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Segment override instruction prefixes |
| |
| let SchedRW = [WriteNop] in { |
| def CS_PREFIX : I<0x2E, PrefixByte, (outs), (ins), "cs", []>; |
| def SS_PREFIX : I<0x36, PrefixByte, (outs), (ins), "ss", []>; |
| def DS_PREFIX : I<0x3E, PrefixByte, (outs), (ins), "ds", []>; |
| def ES_PREFIX : I<0x26, PrefixByte, (outs), (ins), "es", []>; |
| def FS_PREFIX : I<0x64, PrefixByte, (outs), (ins), "fs", []>; |
| def GS_PREFIX : I<0x65, PrefixByte, (outs), (ins), "gs", []>; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Address-size override prefixes. |
| // |
| |
| let SchedRW = [WriteNop] in { |
| def ADDR16_PREFIX : I<0x67, PrefixByte, (outs), (ins), "addr16", []>, |
| Requires<[In32BitMode]>; |
| def ADDR32_PREFIX : I<0x67, PrefixByte, (outs), (ins), "addr32", []>, |
| Requires<[In64BitMode]>; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Moves to and from segment registers. |
| // |
| |
| let SchedRW = [WriteMove] in { |
| def MOV16rs : I<0x8C, MRMDestReg, (outs GR16:$dst), (ins SEGMENT_REG:$src), |
| "mov{w}\t{$src, $dst|$dst, $src}", []>, OpSize16; |
| def MOV32rs : I<0x8C, MRMDestReg, (outs GR32:$dst), (ins SEGMENT_REG:$src), |
| "mov{l}\t{$src, $dst|$dst, $src}", []>, OpSize32; |
| def MOV64rs : RI<0x8C, MRMDestReg, (outs GR64:$dst), (ins SEGMENT_REG:$src), |
| "mov{q}\t{$src, $dst|$dst, $src}", []>; |
| let mayStore = 1 in { |
| def MOV16ms : I<0x8C, MRMDestMem, (outs), (ins i16mem:$dst, SEGMENT_REG:$src), |
| "mov{w}\t{$src, $dst|$dst, $src}", []>; |
| } |
| def MOV16sr : I<0x8E, MRMSrcReg, (outs SEGMENT_REG:$dst), (ins GR16:$src), |
| "mov{w}\t{$src, $dst|$dst, $src}", []>, OpSize16; |
| def MOV32sr : I<0x8E, MRMSrcReg, (outs SEGMENT_REG:$dst), (ins GR32:$src), |
| "mov{l}\t{$src, $dst|$dst, $src}", []>, OpSize32; |
| def MOV64sr : RI<0x8E, MRMSrcReg, (outs SEGMENT_REG:$dst), (ins GR64:$src), |
| "mov{q}\t{$src, $dst|$dst, $src}", []>; |
| let mayLoad = 1 in { |
| def MOV16sm : I<0x8E, MRMSrcMem, (outs SEGMENT_REG:$dst), (ins i16mem:$src), |
| "mov{w}\t{$src, $dst|$dst, $src}", []>; |
| } |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Segmentation support instructions. |
| |
| let SchedRW = [WriteSystem] in { |
| def SWAPGS : I<0x01, MRM_F8, (outs), (ins), "swapgs", []>, TB; |
| |
| let mayLoad = 1 in |
| def LAR16rm : I<0x02, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src), |
| "lar{w}\t{$src, $dst|$dst, $src}", []>, TB, |
| OpSize16, NotMemoryFoldable; |
| def LAR16rr : I<0x02, MRMSrcReg, (outs GR16:$dst), (ins GR16orGR32orGR64:$src), |
| "lar{w}\t{$src, $dst|$dst, $src}", []>, TB, |
| OpSize16, NotMemoryFoldable; |
| |
| let mayLoad = 1 in |
| def LAR32rm : I<0x02, MRMSrcMem, (outs GR32:$dst), (ins i16mem:$src), |
| "lar{l}\t{$src, $dst|$dst, $src}", []>, TB, |
| OpSize32, NotMemoryFoldable; |
| def LAR32rr : I<0x02, MRMSrcReg, (outs GR32:$dst), (ins GR16orGR32orGR64:$src), |
| "lar{l}\t{$src, $dst|$dst, $src}", []>, TB, |
| OpSize32, NotMemoryFoldable; |
| let mayLoad = 1 in |
| def LAR64rm : RI<0x02, MRMSrcMem, (outs GR64:$dst), (ins i16mem:$src), |
| "lar{q}\t{$src, $dst|$dst, $src}", []>, TB, NotMemoryFoldable; |
| def LAR64rr : RI<0x02, MRMSrcReg, (outs GR64:$dst), (ins GR16orGR32orGR64:$src), |
| "lar{q}\t{$src, $dst|$dst, $src}", []>, TB, NotMemoryFoldable; |
| |
| let mayLoad = 1 in |
| def LSL16rm : I<0x03, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src), |
| "lsl{w}\t{$src, $dst|$dst, $src}", []>, TB, |
| OpSize16, NotMemoryFoldable; |
| def LSL16rr : I<0x03, MRMSrcReg, (outs GR16:$dst), (ins GR16orGR32orGR64:$src), |
| "lsl{w}\t{$src, $dst|$dst, $src}", []>, TB, |
| OpSize16, NotMemoryFoldable; |
| let mayLoad = 1 in |
| def LSL32rm : I<0x03, MRMSrcMem, (outs GR32:$dst), (ins i16mem:$src), |
| "lsl{l}\t{$src, $dst|$dst, $src}", []>, TB, |
| OpSize32, NotMemoryFoldable; |
| def LSL32rr : I<0x03, MRMSrcReg, (outs GR32:$dst), (ins GR16orGR32orGR64:$src), |
| "lsl{l}\t{$src, $dst|$dst, $src}", []>, TB, |
| OpSize32, NotMemoryFoldable; |
| let mayLoad = 1 in |
| def LSL64rm : RI<0x03, MRMSrcMem, (outs GR64:$dst), (ins i16mem:$src), |
| "lsl{q}\t{$src, $dst|$dst, $src}", []>, TB, NotMemoryFoldable; |
| def LSL64rr : RI<0x03, MRMSrcReg, (outs GR64:$dst), (ins GR16orGR32orGR64:$src), |
| "lsl{q}\t{$src, $dst|$dst, $src}", []>, TB, NotMemoryFoldable; |
| |
| def INVLPG : I<0x01, MRM7m, (outs), (ins i8mem:$addr), "invlpg\t$addr", []>, TB; |
| |
| def STR16r : I<0x00, MRM1r, (outs GR16:$dst), (ins), |
| "str{w}\t$dst", []>, TB, OpSize16; |
| def STR32r : I<0x00, MRM1r, (outs GR32:$dst), (ins), |
| "str{l}\t$dst", []>, TB, OpSize32; |
| def STR64r : RI<0x00, MRM1r, (outs GR64:$dst), (ins), |
| "str{q}\t$dst", []>, TB; |
| let mayStore = 1 in |
| def STRm : I<0x00, MRM1m, (outs), (ins i16mem:$dst), "str{w}\t$dst", []>, TB; |
| |
| def LTRr : I<0x00, MRM3r, (outs), (ins GR16:$src), "ltr{w}\t$src", []>, TB, NotMemoryFoldable; |
| let mayLoad = 1 in |
| def LTRm : I<0x00, MRM3m, (outs), (ins i16mem:$src), "ltr{w}\t$src", []>, TB, NotMemoryFoldable; |
| |
| def PUSHCS16 : I<0x0E, RawFrm, (outs), (ins), "push{w}\t{%cs|cs}", []>, |
| OpSize16, Requires<[Not64BitMode]>; |
| def PUSHCS32 : I<0x0E, RawFrm, (outs), (ins), "push{l}\t{%cs|cs}", []>, |
| OpSize32, Requires<[Not64BitMode]>; |
| def PUSHSS16 : I<0x16, RawFrm, (outs), (ins), "push{w}\t{%ss|ss}", []>, |
| OpSize16, Requires<[Not64BitMode]>; |
| def PUSHSS32 : I<0x16, RawFrm, (outs), (ins), "push{l}\t{%ss|ss}", []>, |
| OpSize32, Requires<[Not64BitMode]>; |
| def PUSHDS16 : I<0x1E, RawFrm, (outs), (ins), "push{w}\t{%ds|ds}", []>, |
| OpSize16, Requires<[Not64BitMode]>; |
| def PUSHDS32 : I<0x1E, RawFrm, (outs), (ins), "push{l}\t{%ds|ds}", []>, |
| OpSize32, Requires<[Not64BitMode]>; |
| def PUSHES16 : I<0x06, RawFrm, (outs), (ins), "push{w}\t{%es|es}", []>, |
| OpSize16, Requires<[Not64BitMode]>; |
| def PUSHES32 : I<0x06, RawFrm, (outs), (ins), "push{l}\t{%es|es}", []>, |
| OpSize32, Requires<[Not64BitMode]>; |
| def PUSHFS16 : I<0xa0, RawFrm, (outs), (ins), "push{w}\t{%fs|fs}", []>, |
| OpSize16, TB; |
| def PUSHFS32 : I<0xa0, RawFrm, (outs), (ins), "push{l}\t{%fs|fs}", []>, TB, |
| OpSize32, Requires<[Not64BitMode]>; |
| def PUSHGS16 : I<0xa8, RawFrm, (outs), (ins), "push{w}\t{%gs|gs}", []>, |
| OpSize16, TB; |
| def PUSHGS32 : I<0xa8, RawFrm, (outs), (ins), "push{l}\t{%gs|gs}", []>, TB, |
| OpSize32, Requires<[Not64BitMode]>; |
| def PUSHFS64 : I<0xa0, RawFrm, (outs), (ins), "push{q}\t{%fs|fs}", []>, TB, |
| OpSize32, Requires<[In64BitMode]>; |
| def PUSHGS64 : I<0xa8, RawFrm, (outs), (ins), "push{q}\t{%gs|gs}", []>, TB, |
| OpSize32, Requires<[In64BitMode]>; |
| |
| // No "pop cs" instruction. |
| def POPSS16 : I<0x17, RawFrm, (outs), (ins), "pop{w}\t{%ss|ss}", []>, |
| OpSize16, Requires<[Not64BitMode]>; |
| def POPSS32 : I<0x17, RawFrm, (outs), (ins), "pop{l}\t{%ss|ss}", []>, |
| OpSize32, Requires<[Not64BitMode]>; |
| |
| def POPDS16 : I<0x1F, RawFrm, (outs), (ins), "pop{w}\t{%ds|ds}", []>, |
| OpSize16, Requires<[Not64BitMode]>; |
| def POPDS32 : I<0x1F, RawFrm, (outs), (ins), "pop{l}\t{%ds|ds}", []>, |
| OpSize32, Requires<[Not64BitMode]>; |
| |
| def POPES16 : I<0x07, RawFrm, (outs), (ins), "pop{w}\t{%es|es}", []>, |
| OpSize16, Requires<[Not64BitMode]>; |
| def POPES32 : I<0x07, RawFrm, (outs), (ins), "pop{l}\t{%es|es}", []>, |
| OpSize32, Requires<[Not64BitMode]>; |
| |
| def POPFS16 : I<0xa1, RawFrm, (outs), (ins), "pop{w}\t{%fs|fs}", []>, |
| OpSize16, TB; |
| def POPFS32 : I<0xa1, RawFrm, (outs), (ins), "pop{l}\t{%fs|fs}", []>, TB, |
| OpSize32, Requires<[Not64BitMode]>; |
| def POPFS64 : I<0xa1, RawFrm, (outs), (ins), "pop{q}\t{%fs|fs}", []>, TB, |
| OpSize32, Requires<[In64BitMode]>; |
| |
| def POPGS16 : I<0xa9, RawFrm, (outs), (ins), "pop{w}\t{%gs|gs}", []>, |
| OpSize16, TB; |
| def POPGS32 : I<0xa9, RawFrm, (outs), (ins), "pop{l}\t{%gs|gs}", []>, TB, |
| OpSize32, Requires<[Not64BitMode]>; |
| def POPGS64 : I<0xa9, RawFrm, (outs), (ins), "pop{q}\t{%gs|gs}", []>, TB, |
| OpSize32, Requires<[In64BitMode]>; |
| |
| def LDS16rm : I<0xc5, MRMSrcMem, (outs GR16:$dst), (ins opaquemem:$src), |
| "lds{w}\t{$src, $dst|$dst, $src}", []>, OpSize16, |
| Requires<[Not64BitMode]>; |
| def LDS32rm : I<0xc5, MRMSrcMem, (outs GR32:$dst), (ins opaquemem:$src), |
| "lds{l}\t{$src, $dst|$dst, $src}", []>, OpSize32, |
| Requires<[Not64BitMode]>; |
| |
| def LSS16rm : I<0xb2, MRMSrcMem, (outs GR16:$dst), (ins opaquemem:$src), |
| "lss{w}\t{$src, $dst|$dst, $src}", []>, TB, OpSize16; |
| def LSS32rm : I<0xb2, MRMSrcMem, (outs GR32:$dst), (ins opaquemem:$src), |
| "lss{l}\t{$src, $dst|$dst, $src}", []>, TB, OpSize32; |
| def LSS64rm : RI<0xb2, MRMSrcMem, (outs GR64:$dst), (ins opaquemem:$src), |
| "lss{q}\t{$src, $dst|$dst, $src}", []>, TB; |
| |
| def LES16rm : I<0xc4, MRMSrcMem, (outs GR16:$dst), (ins opaquemem:$src), |
| "les{w}\t{$src, $dst|$dst, $src}", []>, OpSize16, |
| Requires<[Not64BitMode]>; |
| def LES32rm : I<0xc4, MRMSrcMem, (outs GR32:$dst), (ins opaquemem:$src), |
| "les{l}\t{$src, $dst|$dst, $src}", []>, OpSize32, |
| Requires<[Not64BitMode]>; |
| |
| def LFS16rm : I<0xb4, MRMSrcMem, (outs GR16:$dst), (ins opaquemem:$src), |
| "lfs{w}\t{$src, $dst|$dst, $src}", []>, TB, OpSize16; |
| def LFS32rm : I<0xb4, MRMSrcMem, (outs GR32:$dst), (ins opaquemem:$src), |
| "lfs{l}\t{$src, $dst|$dst, $src}", []>, TB, OpSize32; |
| def LFS64rm : RI<0xb4, MRMSrcMem, (outs GR64:$dst), (ins opaquemem:$src), |
| "lfs{q}\t{$src, $dst|$dst, $src}", []>, TB; |
| |
| def LGS16rm : I<0xb5, MRMSrcMem, (outs GR16:$dst), (ins opaquemem:$src), |
| "lgs{w}\t{$src, $dst|$dst, $src}", []>, TB, OpSize16; |
| def LGS32rm : I<0xb5, MRMSrcMem, (outs GR32:$dst), (ins opaquemem:$src), |
| "lgs{l}\t{$src, $dst|$dst, $src}", []>, TB, OpSize32; |
| |
| def LGS64rm : RI<0xb5, MRMSrcMem, (outs GR64:$dst), (ins opaquemem:$src), |
| "lgs{q}\t{$src, $dst|$dst, $src}", []>, TB; |
| |
| def VERRr : I<0x00, MRM4r, (outs), (ins GR16:$seg), "verr\t$seg", []>, TB, NotMemoryFoldable; |
| def VERWr : I<0x00, MRM5r, (outs), (ins GR16:$seg), "verw\t$seg", []>, TB, NotMemoryFoldable; |
| let mayLoad = 1 in { |
| def VERRm : I<0x00, MRM4m, (outs), (ins i16mem:$seg), "verr\t$seg", []>, TB, NotMemoryFoldable; |
| def VERWm : I<0x00, MRM5m, (outs), (ins i16mem:$seg), "verw\t$seg", []>, TB, NotMemoryFoldable; |
| } |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Descriptor-table support instructions |
| |
| let SchedRW = [WriteSystem] in { |
| def SGDT16m : I<0x01, MRM0m, (outs), (ins opaquemem:$dst), |
| "sgdtw\t$dst", []>, TB, OpSize16, Requires<[Not64BitMode]>; |
| def SGDT32m : I<0x01, MRM0m, (outs), (ins opaquemem:$dst), |
| "sgdt{l|d}\t$dst", []>, OpSize32, TB, Requires <[Not64BitMode]>; |
| def SGDT64m : I<0x01, MRM0m, (outs), (ins opaquemem:$dst), |
| "sgdt{q}\t$dst", []>, TB, Requires <[In64BitMode]>; |
| def SIDT16m : I<0x01, MRM1m, (outs), (ins opaquemem:$dst), |
| "sidtw\t$dst", []>, TB, OpSize16, Requires<[Not64BitMode]>; |
| def SIDT32m : I<0x01, MRM1m, (outs), (ins opaquemem:$dst), |
| "sidt{l|d}\t$dst", []>, OpSize32, TB, Requires <[Not64BitMode]>; |
| def SIDT64m : I<0x01, MRM1m, (outs), (ins opaquemem:$dst), |
| "sidt{q}\t$dst", []>, TB, Requires <[In64BitMode]>; |
| def SLDT16r : I<0x00, MRM0r, (outs GR16:$dst), (ins), |
| "sldt{w}\t$dst", []>, TB, OpSize16; |
| let mayStore = 1 in |
| def SLDT16m : I<0x00, MRM0m, (outs), (ins i16mem:$dst), |
| "sldt{w}\t$dst", []>, TB; |
| def SLDT32r : I<0x00, MRM0r, (outs GR32:$dst), (ins), |
| "sldt{l}\t$dst", []>, OpSize32, TB; |
| |
| // LLDT is not interpreted specially in 64-bit mode because there is no sign |
| // extension. |
| def SLDT64r : RI<0x00, MRM0r, (outs GR64:$dst), (ins), |
| "sldt{q}\t$dst", []>, TB, Requires<[In64BitMode]>; |
| |
| def LGDT16m : I<0x01, MRM2m, (outs), (ins opaquemem:$src), |
| "lgdtw\t$src", []>, TB, OpSize16, Requires<[Not64BitMode]>; |
| def LGDT32m : I<0x01, MRM2m, (outs), (ins opaquemem:$src), |
| "lgdt{l|d}\t$src", []>, OpSize32, TB, Requires<[Not64BitMode]>; |
| def LGDT64m : I<0x01, MRM2m, (outs), (ins opaquemem:$src), |
| "lgdt{q}\t$src", []>, TB, Requires<[In64BitMode]>; |
| def LIDT16m : I<0x01, MRM3m, (outs), (ins opaquemem:$src), |
| "lidtw\t$src", []>, TB, OpSize16, Requires<[Not64BitMode]>; |
| def LIDT32m : I<0x01, MRM3m, (outs), (ins opaquemem:$src), |
| "lidt{l|d}\t$src", []>, OpSize32, TB, Requires<[Not64BitMode]>; |
| def LIDT64m : I<0x01, MRM3m, (outs), (ins opaquemem:$src), |
| "lidt{q}\t$src", []>, TB, Requires<[In64BitMode]>; |
| def LLDT16r : I<0x00, MRM2r, (outs), (ins GR16:$src), |
| "lldt{w}\t$src", []>, TB, NotMemoryFoldable; |
| let mayLoad = 1 in |
| def LLDT16m : I<0x00, MRM2m, (outs), (ins i16mem:$src), |
| "lldt{w}\t$src", []>, TB, NotMemoryFoldable; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Specialized register support |
| let SchedRW = [WriteSystem] in { |
| let Uses = [EAX, ECX, EDX] in |
| def WRMSR : I<0x30, RawFrm, (outs), (ins), "wrmsr", []>, TB; |
| let Defs = [EAX, EDX], Uses = [ECX] in |
| def RDMSR : I<0x32, RawFrm, (outs), (ins), "rdmsr", []>, TB; |
| |
| let Defs = [RAX, RDX], Uses = [ECX] in |
| def RDPMC : I<0x33, RawFrm, (outs), (ins), "rdpmc", []>, TB; |
| |
| def SMSW16r : I<0x01, MRM4r, (outs GR16:$dst), (ins), |
| "smsw{w}\t$dst", []>, OpSize16, TB; |
| def SMSW32r : I<0x01, MRM4r, (outs GR32:$dst), (ins), |
| "smsw{l}\t$dst", []>, OpSize32, TB; |
| // no m form encodable; use SMSW16m |
| def SMSW64r : RI<0x01, MRM4r, (outs GR64:$dst), (ins), |
| "smsw{q}\t$dst", []>, TB; |
| |
| // For memory operands, there is only a 16-bit form |
| def SMSW16m : I<0x01, MRM4m, (outs), (ins i16mem:$dst), |
| "smsw{w}\t$dst", []>, TB; |
| |
| def LMSW16r : I<0x01, MRM6r, (outs), (ins GR16:$src), |
| "lmsw{w}\t$src", []>, TB, NotMemoryFoldable; |
| let mayLoad = 1 in |
| def LMSW16m : I<0x01, MRM6m, (outs), (ins i16mem:$src), |
| "lmsw{w}\t$src", []>, TB, NotMemoryFoldable; |
| |
| let Defs = [EAX, EBX, ECX, EDX], Uses = [EAX, ECX] in |
| def CPUID : I<0xA2, RawFrm, (outs), (ins), "cpuid", []>, TB; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Cache instructions |
| let SchedRW = [WriteSystem] in { |
| def INVD : I<0x08, RawFrm, (outs), (ins), "invd", []>, TB; |
| def WBINVD : I<0x09, RawFrm, (outs), (ins), "wbinvd", [(int_x86_wbinvd)]>, PS; |
| |
| // wbnoinvd is like wbinvd, except without invalidation |
| // encoding: like wbinvd + an 0xF3 prefix |
| def WBNOINVD : I<0x09, RawFrm, (outs), (ins), "wbnoinvd", |
| [(int_x86_wbnoinvd)]>, XS, |
| Requires<[HasWBNOINVD]>; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // CET instructions |
| // Use with caution, availability is not predicated on features. |
| let SchedRW = [WriteSystem] in { |
| let Uses = [SSP] in { |
| let Defs = [SSP] in { |
| def INCSSPD : I<0xAE, MRM5r, (outs), (ins GR32:$src), "incsspd\t$src", |
| [(int_x86_incsspd GR32:$src)]>, XS; |
| def INCSSPQ : RI<0xAE, MRM5r, (outs), (ins GR64:$src), "incsspq\t$src", |
| [(int_x86_incsspq GR64:$src)]>, XS; |
| } // Defs SSP |
| |
| let Constraints = "$src = $dst" in { |
| def RDSSPD : I<0x1E, MRM1r, (outs GR32:$dst), (ins GR32:$src), |
| "rdsspd\t$dst", |
| [(set GR32:$dst, (int_x86_rdsspd GR32:$src))]>, XS; |
| def RDSSPQ : RI<0x1E, MRM1r, (outs GR64:$dst), (ins GR64:$src), |
| "rdsspq\t$dst", |
| [(set GR64:$dst, (int_x86_rdsspq GR64:$src))]>, XS; |
| } |
| |
| let Defs = [SSP] in { |
| def SAVEPREVSSP : I<0x01, MRM_EA, (outs), (ins), "saveprevssp", |
| [(int_x86_saveprevssp)]>, XS; |
| def RSTORSSP : I<0x01, MRM5m, (outs), (ins i32mem:$src), |
| "rstorssp\t$src", |
| [(int_x86_rstorssp addr:$src)]>, XS; |
| } // Defs SSP |
| } // Uses SSP |
| |
| def WRSSD : I<0xF6, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src), |
| "wrssd\t{$src, $dst|$dst, $src}", |
| [(int_x86_wrssd GR32:$src, addr:$dst)]>, T8PS; |
| def WRSSQ : RI<0xF6, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src), |
| "wrssq\t{$src, $dst|$dst, $src}", |
| [(int_x86_wrssq GR64:$src, addr:$dst)]>, T8PS; |
| def WRUSSD : I<0xF5, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src), |
| "wrussd\t{$src, $dst|$dst, $src}", |
| [(int_x86_wrussd GR32:$src, addr:$dst)]>, T8PD; |
| def WRUSSQ : RI<0xF5, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src), |
| "wrussq\t{$src, $dst|$dst, $src}", |
| [(int_x86_wrussq GR64:$src, addr:$dst)]>, T8PD; |
| |
| let Defs = [SSP] in { |
| let Uses = [SSP] in { |
| def SETSSBSY : I<0x01, MRM_E8, (outs), (ins), "setssbsy", |
| [(int_x86_setssbsy)]>, XS; |
| } // Uses SSP |
| |
| def CLRSSBSY : I<0xAE, MRM6m, (outs), (ins i32mem:$src), |
| "clrssbsy\t$src", |
| [(int_x86_clrssbsy addr:$src)]>, XS; |
| } // Defs SSP |
| } // SchedRW |
| |
| let SchedRW = [WriteSystem] in { |
| def ENDBR64 : I<0x1E, MRM_FA, (outs), (ins), "endbr64", []>, XS; |
| def ENDBR32 : I<0x1E, MRM_FB, (outs), (ins), "endbr32", []>, XS; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // XSAVE instructions |
| let SchedRW = [WriteSystem] in { |
| // NOTE: No HasXSAVE predicate so that these can be used with _xgetbv/_xsetbv |
| // on Windows without needing to enable the xsave feature to be compatible with |
| // MSVC. |
| let Defs = [EDX, EAX], Uses = [ECX] in |
| def XGETBV : I<0x01, MRM_D0, (outs), (ins), "xgetbv", []>, PS; |
| |
| let Uses = [EDX, EAX, ECX] in |
| def XSETBV : I<0x01, MRM_D1, (outs), (ins), |
| "xsetbv", |
| [(int_x86_xsetbv ECX, EDX, EAX)]>, PS; |
| |
| |
| let Uses = [EDX, EAX] in { |
| def XSAVE : I<0xAE, MRM4m, (outs), (ins opaquemem:$dst), |
| "xsave\t$dst", |
| [(int_x86_xsave addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVE]>; |
| def XSAVE64 : RI<0xAE, MRM4m, (outs), (ins opaquemem:$dst), |
| "xsave64\t$dst", |
| [(int_x86_xsave64 addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVE, In64BitMode]>; |
| def XRSTOR : I<0xAE, MRM5m, (outs), (ins opaquemem:$dst), |
| "xrstor\t$dst", |
| [(int_x86_xrstor addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVE]>; |
| def XRSTOR64 : RI<0xAE, MRM5m, (outs), (ins opaquemem:$dst), |
| "xrstor64\t$dst", |
| [(int_x86_xrstor64 addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVE, In64BitMode]>; |
| def XSAVEOPT : I<0xAE, MRM6m, (outs), (ins opaquemem:$dst), |
| "xsaveopt\t$dst", |
| [(int_x86_xsaveopt addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVEOPT]>; |
| def XSAVEOPT64 : RI<0xAE, MRM6m, (outs), (ins opaquemem:$dst), |
| "xsaveopt64\t$dst", |
| [(int_x86_xsaveopt64 addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVEOPT, In64BitMode]>; |
| def XSAVEC : I<0xC7, MRM4m, (outs), (ins opaquemem:$dst), |
| "xsavec\t$dst", |
| [(int_x86_xsavec addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVEC]>; |
| def XSAVEC64 : RI<0xC7, MRM4m, (outs), (ins opaquemem:$dst), |
| "xsavec64\t$dst", |
| [(int_x86_xsavec64 addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVEC, In64BitMode]>; |
| def XSAVES : I<0xC7, MRM5m, (outs), (ins opaquemem:$dst), |
| "xsaves\t$dst", |
| [(int_x86_xsaves addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVES]>; |
| def XSAVES64 : RI<0xC7, MRM5m, (outs), (ins opaquemem:$dst), |
| "xsaves64\t$dst", |
| [(int_x86_xsaves64 addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVE, In64BitMode]>; |
| def XRSTORS : I<0xC7, MRM3m, (outs), (ins opaquemem:$dst), |
| "xrstors\t$dst", |
| [(int_x86_xrstors addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVES]>; |
| def XRSTORS64 : RI<0xC7, MRM3m, (outs), (ins opaquemem:$dst), |
| "xrstors64\t$dst", |
| [(int_x86_xrstors64 addr:$dst, EDX, EAX)]>, PS, Requires<[HasXSAVES, In64BitMode]>; |
| } // Uses |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // VIA PadLock crypto instructions |
| let Defs = [RAX, RDI], Uses = [RDX, RDI], SchedRW = [WriteSystem] in |
| def XSTORE : I<0xa7, MRM_C0, (outs), (ins), "xstore", []>, TB; |
| |
| def : InstAlias<"xstorerng", (XSTORE)>; |
| |
| let SchedRW = [WriteSystem] in { |
| let Defs = [RSI, RDI], Uses = [RBX, RDX, RSI, RDI] in { |
| def XCRYPTECB : I<0xa7, MRM_C8, (outs), (ins), "xcryptecb", []>, TB, REP; |
| def XCRYPTCBC : I<0xa7, MRM_D0, (outs), (ins), "xcryptcbc", []>, TB, REP; |
| def XCRYPTCTR : I<0xa7, MRM_D8, (outs), (ins), "xcryptctr", []>, TB, REP; |
| def XCRYPTCFB : I<0xa7, MRM_E0, (outs), (ins), "xcryptcfb", []>, TB, REP; |
| def XCRYPTOFB : I<0xa7, MRM_E8, (outs), (ins), "xcryptofb", []>, TB, REP; |
| } |
| |
| let Defs = [RAX, RSI, RDI], Uses = [RAX, RSI, RDI] in { |
| def XSHA1 : I<0xa6, MRM_C8, (outs), (ins), "xsha1", []>, TB, REP; |
| def XSHA256 : I<0xa6, MRM_D0, (outs), (ins), "xsha256", []>, TB, REP; |
| } |
| let Defs = [RAX, RDX, RSI], Uses = [RAX, RSI] in |
| def MONTMUL : I<0xa6, MRM_C0, (outs), (ins), "montmul", []>, TB, REP; |
| } // SchedRW |
| |
| //==-----------------------------------------------------------------------===// |
| // PKU - enable protection key |
| let SchedRW = [WriteSystem] in { |
| let Defs = [EAX, EDX], Uses = [ECX] in |
| def RDPKRUr : I<0x01, MRM_EE, (outs), (ins), "rdpkru", |
| [(set EAX, (X86rdpkru ECX)), (implicit EDX)]>, PS; |
| let Uses = [EAX, ECX, EDX] in |
| def WRPKRUr : I<0x01, MRM_EF, (outs), (ins), "wrpkru", |
| [(X86wrpkru EAX, EDX, ECX)]>, PS; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // FS/GS Base Instructions |
| let Predicates = [HasFSGSBase, In64BitMode], SchedRW = [WriteSystem] in { |
| def RDFSBASE : I<0xAE, MRM0r, (outs GR32:$dst), (ins), |
| "rdfsbase{l}\t$dst", |
| [(set GR32:$dst, (int_x86_rdfsbase_32))]>, XS; |
| def RDFSBASE64 : RI<0xAE, MRM0r, (outs GR64:$dst), (ins), |
| "rdfsbase{q}\t$dst", |
| [(set GR64:$dst, (int_x86_rdfsbase_64))]>, XS; |
| def RDGSBASE : I<0xAE, MRM1r, (outs GR32:$dst), (ins), |
| "rdgsbase{l}\t$dst", |
| [(set GR32:$dst, (int_x86_rdgsbase_32))]>, XS; |
| def RDGSBASE64 : RI<0xAE, MRM1r, (outs GR64:$dst), (ins), |
| "rdgsbase{q}\t$dst", |
| [(set GR64:$dst, (int_x86_rdgsbase_64))]>, XS; |
| def WRFSBASE : I<0xAE, MRM2r, (outs), (ins GR32:$src), |
| "wrfsbase{l}\t$src", |
| [(int_x86_wrfsbase_32 GR32:$src)]>, XS; |
| def WRFSBASE64 : RI<0xAE, MRM2r, (outs), (ins GR64:$src), |
| "wrfsbase{q}\t$src", |
| [(int_x86_wrfsbase_64 GR64:$src)]>, XS; |
| def WRGSBASE : I<0xAE, MRM3r, (outs), (ins GR32:$src), |
| "wrgsbase{l}\t$src", |
| [(int_x86_wrgsbase_32 GR32:$src)]>, XS; |
| def WRGSBASE64 : RI<0xAE, MRM3r, (outs), (ins GR64:$src), |
| "wrgsbase{q}\t$src", |
| [(int_x86_wrgsbase_64 GR64:$src)]>, XS; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // INVPCID Instruction |
| let SchedRW = [WriteSystem] in { |
| def INVPCID32 : I<0x82, MRMSrcMem, (outs), (ins GR32:$src1, i128mem:$src2), |
| "invpcid\t{$src2, $src1|$src1, $src2}", |
| [(int_x86_invpcid GR32:$src1, addr:$src2)]>, T8PD, |
| Requires<[Not64BitMode, HasINVPCID]>; |
| def INVPCID64 : I<0x82, MRMSrcMem, (outs), (ins GR64:$src1, i128mem:$src2), |
| "invpcid\t{$src2, $src1|$src1, $src2}", []>, T8PD, |
| Requires<[In64BitMode, HasINVPCID]>; |
| } // SchedRW |
| |
| let Predicates = [In64BitMode, HasINVPCID] in { |
| // The instruction can only use a 64 bit register as the register argument |
| // in 64 bit mode, while the intrinsic only accepts a 32 bit argument |
| // corresponding to it. |
| // The accepted values for now are 0,1,2,3 anyways (see Intel SDM -- INVCPID |
| // type),/ so it doesn't hurt us that one can't supply a 64 bit value here. |
| def : Pat<(int_x86_invpcid GR32:$src1, addr:$src2), |
| (INVPCID64 |
| (SUBREG_TO_REG (i64 0), (MOV32rr GR32:$src1), sub_32bit), |
| addr:$src2)>; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // SMAP Instruction |
| let Defs = [EFLAGS], SchedRW = [WriteSystem] in { |
| def CLAC : I<0x01, MRM_CA, (outs), (ins), "clac", []>, PS; |
| def STAC : I<0x01, MRM_CB, (outs), (ins), "stac", []>, PS; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // SMX Instruction |
| let SchedRW = [WriteSystem] in { |
| let Uses = [RAX, RBX, RCX, RDX], Defs = [RAX, RBX, RCX] in { |
| def GETSEC : I<0x37, RawFrm, (outs), (ins), "getsec", []>, PS; |
| } // Uses, Defs |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // TS flag control instruction. |
| let SchedRW = [WriteSystem] in { |
| def CLTS : I<0x06, RawFrm, (outs), (ins), "clts", []>, TB; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // IF (inside EFLAGS) management instructions. |
| let SchedRW = [WriteSystem], Uses = [EFLAGS], Defs = [EFLAGS] in { |
| def CLI : I<0xFA, RawFrm, (outs), (ins), "cli", []>; |
| def STI : I<0xFB, RawFrm, (outs), (ins), "sti", []>; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // RDPID Instruction |
| let SchedRW = [WriteSystem] in { |
| def RDPID32 : I<0xC7, MRM7r, (outs GR32:$dst), (ins), |
| "rdpid\t$dst", [(set GR32:$dst, (int_x86_rdpid))]>, XS, |
| Requires<[Not64BitMode, HasRDPID]>; |
| def RDPID64 : I<0xC7, MRM7r, (outs GR64:$dst), (ins), "rdpid\t$dst", []>, XS, |
| Requires<[In64BitMode, HasRDPID]>; |
| } // SchedRW |
| |
| let Predicates = [In64BitMode, HasRDPID] in { |
| // Due to silly instruction definition, we have to compensate for the |
| // instruction outputing a 64-bit register. |
| def : Pat<(int_x86_rdpid), |
| (EXTRACT_SUBREG (RDPID64), sub_32bit)>; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // PTWRITE Instruction - Write Data to a Processor Trace Packet |
| let SchedRW = [WriteSystem] in { |
| def PTWRITEm: I<0xAE, MRM4m, (outs), (ins i32mem:$dst), |
| "ptwrite{l}\t$dst", [(int_x86_ptwrite32 (loadi32 addr:$dst))]>, XS, |
| Requires<[HasPTWRITE]>; |
| def PTWRITE64m : RI<0xAE, MRM4m, (outs), (ins i64mem:$dst), |
| "ptwrite{q}\t$dst", [(int_x86_ptwrite64 (loadi64 addr:$dst))]>, XS, |
| Requires<[In64BitMode, HasPTWRITE]>; |
| |
| def PTWRITEr : I<0xAE, MRM4r, (outs), (ins GR32:$dst), |
| "ptwrite{l}\t$dst", [(int_x86_ptwrite32 GR32:$dst)]>, XS, |
| Requires<[HasPTWRITE]>; |
| def PTWRITE64r : RI<0xAE, MRM4r, (outs), (ins GR64:$dst), |
| "ptwrite{q}\t$dst", [(int_x86_ptwrite64 GR64:$dst)]>, XS, |
| Requires<[In64BitMode, HasPTWRITE]>; |
| } // SchedRW |
| |
| //===----------------------------------------------------------------------===// |
| // Platform Configuration instruction |
| |
| // From ISA docs: |
| // "This instruction is used to execute functions for configuring platform |
| // features. |
| // EAX: Leaf function to be invoked. |
| // RBX/RCX/RDX: Leaf-specific purpose." |
| // "Successful execution of the leaf clears RAX (set to zero) and ZF, CF, PF, |
| // AF, OF, and SF are cleared. In case of failure, the failure reason is |
| // indicated in RAX with ZF set to 1 and CF, PF, AF, OF, and SF are cleared." |
| // Thus all these mentioned registers are considered clobbered. |
| |
| let SchedRW = [WriteSystem] in { |
| let Uses = [RAX, RBX, RCX, RDX], Defs = [RAX, RBX, RCX, RDX, EFLAGS] in |
| def PCONFIG : I<0x01, MRM_C5, (outs), (ins), "pconfig", []>, PS, |
| Requires<[HasPCONFIG]>; |
| } // SchedRW |
