//
//===----------------------------------------------------------------------===//
-#ifndef X86BASEINFO_H
-#define X86BASEINFO_H
+#ifndef LLVM_LIB_TARGET_X86_MCTARGETDESC_X86BASEINFO_H
+#define LLVM_LIB_TARGET_X86_MCTARGETDESC_X86BASEINFO_H
#include "X86MCTargetDesc.h"
-#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCInstrDesc.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/ErrorHandling.h"
/// destination index register DI/ESI/RDI.
RawFrmDstSrc = 10,
+ /// RawFrmImm8 - This is used for the ENTER instruction, which has two
+ /// immediates, the first of which is a 16-bit immediate (specified by
+ /// the imm encoding) and the second is a 8-bit fixed value.
+ RawFrmImm8 = 11,
+
+ /// RawFrmImm16 - This is used for CALL FAR instructions, which have two
+ /// immediates, the first of which is a 16 or 32-bit immediate (specified by
+ /// the imm encoding) and the second is a 16-bit fixed value. In the AMD
+ /// manual, this operand is described as pntr16:32 and pntr16:16
+ RawFrmImm16 = 12,
+
+ /// MRMX[rm] - The forms are used to represent instructions that use a
+ /// Mod/RM byte, and don't use the middle field for anything.
+ MRMXr = 14, MRMXm = 15,
+
/// MRM[0-7][rm] - These forms are used to represent instructions that use
/// a Mod/RM byte, and use the middle field to hold extended opcode
/// information. In the intel manual these are represented as /0, /1, ...
MRM4m = 28, MRM5m = 29, MRM6m = 30, MRM7m = 31, // Format /4 /5 /6 /7
//// MRM_XX - A mod/rm byte of exactly 0xXX.
- MRM_C1 = 33, MRM_C2 = 34, MRM_C3 = 35, MRM_C4 = 36,
- MRM_C8 = 37, MRM_C9 = 38, MRM_CA = 39, MRM_CB = 40,
- MRM_E8 = 41, MRM_F0 = 42, MRM_F8 = 45, MRM_F9 = 46,
- MRM_D0 = 47, MRM_D1 = 48, MRM_D4 = 49, MRM_D5 = 50,
- MRM_D6 = 51, MRM_D8 = 52, MRM_D9 = 53, MRM_DA = 54,
- MRM_DB = 55, MRM_DC = 56, MRM_DD = 57, MRM_DE = 58,
- MRM_DF = 59,
-
- /// RawFrmImm8 - This is used for the ENTER instruction, which has two
- /// immediates, the first of which is a 16-bit immediate (specified by
- /// the imm encoding) and the second is a 8-bit fixed value.
- RawFrmImm8 = 43,
-
- /// RawFrmImm16 - This is used for CALL FAR instructions, which have two
- /// immediates, the first of which is a 16 or 32-bit immediate (specified by
- /// the imm encoding) and the second is a 16-bit fixed value. In the AMD
- /// manual, this operand is described as pntr16:32 and pntr16:16
- RawFrmImm16 = 44,
-
- FormMask = 63,
+ MRM_C0 = 32, MRM_C1 = 33, MRM_C2 = 34, MRM_C3 = 35,
+ MRM_C4 = 36, MRM_C8 = 37, MRM_C9 = 38, MRM_CA = 39,
+ MRM_CB = 40, MRM_CF = 41, MRM_D0 = 42, MRM_D1 = 43,
+ MRM_D4 = 44, MRM_D5 = 45, MRM_D6 = 46, MRM_D7 = 47,
+ MRM_D8 = 48, MRM_D9 = 49, MRM_DA = 50, MRM_DB = 51,
+ MRM_DC = 52, MRM_DD = 53, MRM_DE = 54, MRM_DF = 55,
+ MRM_E0 = 56, MRM_E1 = 57, MRM_E2 = 58, MRM_E3 = 59,
+ MRM_E4 = 60, MRM_E5 = 61, MRM_E8 = 62, MRM_E9 = 63,
+ MRM_EA = 64, MRM_EB = 65, MRM_EC = 66, MRM_ED = 67,
+ MRM_EE = 68, MRM_F0 = 69, MRM_F1 = 70, MRM_F2 = 71,
+ MRM_F3 = 72, MRM_F4 = 73, MRM_F5 = 74, MRM_F6 = 75,
+ MRM_F7 = 76, MRM_F8 = 77, MRM_F9 = 78, MRM_FA = 79,
+ MRM_FB = 80, MRM_FC = 81, MRM_FD = 82, MRM_FE = 83,
+ MRM_FF = 84,
+
+ FormMask = 127,
//===------------------------------------------------------------------===//
// Actual flags...
- // OpSize - Set if this instruction requires an operand size prefix (0x66),
- // which most often indicates that the instruction operates on 16 bit data
- // instead of 32 bit data. OpSize16 in 16 bit mode indicates that the
- // instruction operates on 32 bit data instead of 16 bit data.
- OpSize = 1 << 6,
- OpSize16 = 1 << 7,
+ // OpSize - OpSizeFixed implies instruction never needs a 0x66 prefix.
+ // OpSize16 means this is a 16-bit instruction and needs 0x66 prefix in
+ // 32-bit mode. OpSize32 means this is a 32-bit instruction needs a 0x66
+ // prefix in 16-bit mode.
+ OpSizeShift = 7,
+ OpSizeMask = 0x3 << OpSizeShift,
+
+ OpSize16 = 1,
+ OpSize32 = 2,
// AsSize - Set if this instruction requires an operand size prefix (0x67),
// which most often indicates that the instruction address 16 bit address
// instead of 32 bit address (or 32 bit address in 64 bit mode).
- AdSize = 1 << 8,
+ AdSizeShift = OpSizeShift + 2,
+ AdSize = 1 << AdSizeShift,
//===------------------------------------------------------------------===//
- // Op0Mask - There are several prefix bytes that are used to form two byte
- // opcodes. These are currently 0x0F, 0xF3, and 0xD8-0xDF. This mask is
- // used to obtain the setting of this field. If no bits in this field is
- // set, there is no prefix byte for obtaining a multibyte opcode.
+ // OpPrefix - There are several prefix bytes that are used as opcode
+ // extensions. These are 0x66, 0xF3, and 0xF2. If this field is 0 there is
+ // no prefix.
//
- Op0Shift = 9,
- Op0Mask = 0x1F << Op0Shift,
+ OpPrefixShift = AdSizeShift + 1,
+ OpPrefixMask = 0x7 << OpPrefixShift,
- // TB - TwoByte - Set if this instruction has a two byte opcode, which
- // starts with a 0x0F byte before the real opcode.
- TB = 1 << Op0Shift,
-
- // REP - The 0xF3 prefix byte indicating repetition of the following
- // instruction.
- REP = 2 << Op0Shift,
-
- // D8-DF - These escape opcodes are used by the floating point unit. These
- // values must remain sequential.
- D8 = 3 << Op0Shift, D9 = 4 << Op0Shift,
- DA = 5 << Op0Shift, DB = 6 << Op0Shift,
- DC = 7 << Op0Shift, DD = 8 << Op0Shift,
- DE = 9 << Op0Shift, DF = 10 << Op0Shift,
+ // PS, PD - Prefix code for packed single and double precision vector
+ // floating point operations performed in the SSE registers.
+ PS = 1 << OpPrefixShift, PD = 2 << OpPrefixShift,
// XS, XD - These prefix codes are for single and double precision scalar
// floating point operations performed in the SSE registers.
- XD = 11 << Op0Shift, XS = 12 << Op0Shift,
+ XS = 3 << OpPrefixShift, XD = 4 << OpPrefixShift,
- // T8, TA, A6, A7 - Prefix after the 0x0F prefix.
- T8 = 13 << Op0Shift, TA = 14 << Op0Shift,
- A6 = 15 << Op0Shift, A7 = 16 << Op0Shift,
+ //===------------------------------------------------------------------===//
+ // OpMap - This field determines which opcode map this instruction
+ // belongs to. i.e. one-byte, two-byte, 0x0f 0x38, 0x0f 0x3a, etc.
+ //
+ OpMapShift = OpPrefixShift + 3,
+ OpMapMask = 0x7 << OpMapShift,
- // T8XD - Prefix before and after 0x0F. Combination of T8 and XD.
- T8XD = 17 << Op0Shift,
+ // OB - OneByte - Set if this instruction has a one byte opcode.
+ OB = 0 << OpMapShift,
- // T8XS - Prefix before and after 0x0F. Combination of T8 and XS.
- T8XS = 18 << Op0Shift,
+ // TB - TwoByte - Set if this instruction has a two byte opcode, which
+ // starts with a 0x0F byte before the real opcode.
+ TB = 1 << OpMapShift,
- // TAXD - Prefix before and after 0x0F. Combination of TA and XD.
- TAXD = 19 << Op0Shift,
+ // T8, TA - Prefix after the 0x0F prefix.
+ T8 = 2 << OpMapShift, TA = 3 << OpMapShift,
// XOP8 - Prefix to include use of imm byte.
- XOP8 = 20 << Op0Shift,
+ XOP8 = 4 << OpMapShift,
// XOP9 - Prefix to exclude use of imm byte.
- XOP9 = 21 << Op0Shift,
+ XOP9 = 5 << OpMapShift,
// XOPA - Prefix to encode 0xA in VEX.MMMM of XOP instructions.
- XOPA = 22 << Op0Shift,
-
- // PD - Prefix code for packed double precision vector floating point
- // operations performed in the SSE registers.
- PD = 23 << Op0Shift,
-
- // T8PD - Prefix before and after 0x0F. Combination of T8 and PD.
- T8PD = 24 << Op0Shift,
-
- // TAPD - Prefix before and after 0x0F. Combination of TA and PD.
- TAPD = 25 << Op0Shift,
+ XOPA = 6 << OpMapShift,
//===------------------------------------------------------------------===//
// REX_W - REX prefixes are instruction prefixes used in 64-bit mode.
// etc. We only cares about REX.W and REX.R bits and only the former is
// statically determined.
//
- REXShift = Op0Shift + 5,
+ REXShift = OpMapShift + 3,
REX_W = 1 << REXShift,
//===------------------------------------------------------------------===//
// This three-bit field describes the size of an immediate operand. Zero is
// unused so that we can tell if we forgot to set a value.
ImmShift = REXShift + 1,
- ImmMask = 7 << ImmShift,
+ ImmMask = 15 << ImmShift,
Imm8 = 1 << ImmShift,
Imm8PCRel = 2 << ImmShift,
Imm16 = 3 << ImmShift,
Imm16PCRel = 4 << ImmShift,
Imm32 = 5 << ImmShift,
Imm32PCRel = 6 << ImmShift,
- Imm64 = 7 << ImmShift,
+ Imm32S = 7 << ImmShift,
+ Imm64 = 8 << ImmShift,
//===------------------------------------------------------------------===//
// FP Instruction Classification... Zero is non-fp instruction.
// FPTypeMask - Mask for all of the FP types...
- FPTypeShift = ImmShift + 3,
+ FPTypeShift = ImmShift + 4,
FPTypeMask = 7 << FPTypeShift,
// NotFP - The default, set for instructions that do not use FP registers.
LOCKShift = FPTypeShift + 3,
LOCK = 1 << LOCKShift,
- // Execution domain for SSE instructions in bits 23, 24.
- // 0 in bits 23-24 means normal, non-SSE instruction.
- SSEDomainShift = LOCKShift + 1,
+ // REP prefix
+ REPShift = LOCKShift + 1,
+ REP = 1 << REPShift,
+
+ // Execution domain for SSE instructions.
+ // 0 means normal, non-SSE instruction.
+ SSEDomainShift = REPShift + 1,
- OpcodeShift = SSEDomainShift + 2,
+ // Encoding
+ EncodingShift = SSEDomainShift + 2,
+ EncodingMask = 0x3 << EncodingShift,
+
+ // VEX - encoding using 0xC4/0xC5
+ VEX = 1,
+
+ /// XOP - Opcode prefix used by XOP instructions.
+ XOP = 2,
+
+ // VEX_EVEX - Specifies that this instruction use EVEX form which provides
+ // syntax support up to 32 512-bit register operands and up to 7 16-bit
+ // mask operands as well as source operand data swizzling/memory operand
+ // conversion, eviction hint, and rounding mode.
+ EVEX = 3,
+
+ // Opcode
+ OpcodeShift = EncodingShift + 2,
//===------------------------------------------------------------------===//
/// VEX - The opcode prefix used by AVX instructions
VEXShift = OpcodeShift + 8,
- VEX = 1U << 0,
/// VEX_W - Has a opcode specific functionality, but is used in the same
/// way as REX_W is for regular SSE instructions.
- VEX_W = 1U << 1,
+ VEX_W = 1U << 0,
/// VEX_4V - Used to specify an additional AVX/SSE register. Several 2
/// address instructions in SSE are represented as 3 address ones in AVX
/// and the additional register is encoded in VEX_VVVV prefix.
- VEX_4V = 1U << 2,
+ VEX_4V = 1U << 1,
/// VEX_4VOp3 - Similar to VEX_4V, but used on instructions that encode
/// operand 3 with VEX.vvvv.
- VEX_4VOp3 = 1U << 3,
+ VEX_4VOp3 = 1U << 2,
/// VEX_I8IMM - Specifies that the last register used in a AVX instruction,
/// must be encoded in the i8 immediate field. This usually happens in
/// instructions with 4 operands.
- VEX_I8IMM = 1U << 4,
+ VEX_I8IMM = 1U << 3,
/// VEX_L - Stands for a bit in the VEX opcode prefix meaning the current
/// instruction uses 256-bit wide registers. This is usually auto detected
/// if a VR256 register is used, but some AVX instructions also have this
/// field marked when using a f256 memory references.
- VEX_L = 1U << 5,
+ VEX_L = 1U << 4,
// VEX_LIG - Specifies that this instruction ignores the L-bit in the VEX
// prefix. Usually used for scalar instructions. Needed by disassembler.
- VEX_LIG = 1U << 6,
+ VEX_LIG = 1U << 5,
// TODO: we should combine VEX_L and VEX_LIG together to form a 2-bit field
// with following encoding:
// - 11 LIG (but, in insn encoding, leave VEX.L and EVEX.L in zeros.
// this will save 1 tsflag bit
- // VEX_EVEX - Specifies that this instruction use EVEX form which provides
- // syntax support up to 32 512-bit register operands and up to 7 16-bit
- // mask operands as well as source operand data swizzling/memory operand
- // conversion, eviction hint, and rounding mode.
- EVEX = 1U << 7,
-
// EVEX_K - Set if this instruction requires masking
- EVEX_K = 1U << 8,
+ EVEX_K = 1U << 6,
// EVEX_Z - Set if this instruction has EVEX.Z field set.
- EVEX_Z = 1U << 9,
+ EVEX_Z = 1U << 7,
// EVEX_L2 - Set if this instruction has EVEX.L' field set.
- EVEX_L2 = 1U << 10,
+ EVEX_L2 = 1U << 8,
// EVEX_B - Set if this instruction has EVEX.B field set.
- EVEX_B = 1U << 11,
-
- // EVEX_CD8E - compressed disp8 form, element-size
- EVEX_CD8EShift = VEXShift + 12,
- EVEX_CD8EMask = 3,
+ EVEX_B = 1U << 9,
- // EVEX_CD8V - compressed disp8 form, vector-width
- EVEX_CD8VShift = EVEX_CD8EShift + 2,
- EVEX_CD8VMask = 7,
+ // The scaling factor for the AVX512's 8-bit compressed displacement.
+ CD8_Scale_Shift = VEXShift + 10,
+ CD8_Scale_Mask = 127,
/// Has3DNow0F0FOpcode - This flag indicates that the instruction uses the
/// wacky 0x0F 0x0F prefix for 3DNow! instructions. The manual documents
/// storing a classifier in the imm8 field. To simplify our implementation,
/// we handle this by storeing the classifier in the opcode field and using
/// this flag to indicate that the encoder should do the wacky 3DNow! thing.
- Has3DNow0F0FOpcode = 1U << 17,
+ Has3DNow0F0FOpcodeShift = CD8_Scale_Shift + 7,
+ Has3DNow0F0FOpcode = 1U << (Has3DNow0F0FOpcodeShift - VEXShift),
/// MemOp4 - Used to indicate swapping of operand 3 and 4 to be encoded in
/// ModRM or I8IMM. This is used for FMA4 and XOP instructions.
- MemOp4 = 1U << 18,
-
- /// XOP - Opcode prefix used by XOP instructions.
- XOP = 1U << 19,
+ MemOp4Shift = Has3DNow0F0FOpcodeShift + 1,
+ MemOp4 = 1U << (MemOp4Shift - VEXShift),
/// Explicitly specified rounding control
- EVEX_RC = 1U << 20
+ EVEX_RCShift = MemOp4Shift + 1,
+ EVEX_RC = 1U << (EVEX_RCShift - VEXShift)
};
// getBaseOpcodeFor - This function returns the "base" X86 opcode for the
case X86II::Imm16:
case X86II::Imm16PCRel: return 2;
case X86II::Imm32:
+ case X86II::Imm32S:
case X86II::Imm32PCRel: return 4;
case X86II::Imm64: return 8;
}
case X86II::Imm8:
case X86II::Imm16:
case X86II::Imm32:
+ case X86II::Imm32S:
+ case X86II::Imm64:
+ return false;
+ }
+ }
+
+ /// isImmSigned - Return true if the immediate of the specified instruction's
+ /// TSFlags indicates that it is signed.
+ inline unsigned isImmSigned(uint64_t TSFlags) {
+ switch (TSFlags & X86II::ImmMask) {
+ default: llvm_unreachable("Unknown immediate signedness");
+ case X86II::Imm32S:
+ return true;
+ case X86II::Imm8:
+ case X86II::Imm8PCRel:
+ case X86II::Imm16:
+ case X86II::Imm16PCRel:
+ case X86II::Imm32:
+ case X86II::Imm32PCRel:
case X86II::Imm64:
return false;
}
/// counted as one operand.
///
inline int getMemoryOperandNo(uint64_t TSFlags, unsigned Opcode) {
+ bool HasVEX_4V = (TSFlags >> X86II::VEXShift) & X86II::VEX_4V;
+ bool HasMemOp4 = (TSFlags >> X86II::VEXShift) & X86II::MemOp4;
+ bool HasEVEX_K = ((TSFlags >> X86II::VEXShift) & X86II::EVEX_K);
+
switch (TSFlags & X86II::FormMask) {
default: llvm_unreachable("Unknown FormMask value in getMemoryOperandNo!");
case X86II::Pseudo:
case X86II::MRMDestMem:
return 0;
case X86II::MRMSrcMem: {
- bool HasVEX_4V = (TSFlags >> X86II::VEXShift) & X86II::VEX_4V;
- bool HasMemOp4 = (TSFlags >> X86II::VEXShift) & X86II::MemOp4;
- bool HasEVEX = (TSFlags >> X86II::VEXShift) & X86II::EVEX;
- bool HasEVEX_K = HasEVEX && ((TSFlags >> X86II::VEXShift) & X86II::EVEX_K);
unsigned FirstMemOp = 1;
if (HasVEX_4V)
++FirstMemOp;// Skip the register source (which is encoded in VEX_VVVV).
// Opcode == X86::LEA16r || Opcode == X86::LEA32r)
return FirstMemOp;
}
+ case X86II::MRMXr:
case X86II::MRM0r: case X86II::MRM1r:
case X86II::MRM2r: case X86II::MRM3r:
case X86II::MRM4r: case X86II::MRM5r:
case X86II::MRM6r: case X86II::MRM7r:
return -1;
+ case X86II::MRMXm:
case X86II::MRM0m: case X86II::MRM1m:
case X86II::MRM2m: case X86II::MRM3m:
case X86II::MRM4m: case X86II::MRM5m:
unsigned FirstMemOp = 0;
if (HasVEX_4V)
++FirstMemOp;// Skip the register dest (which is encoded in VEX_VVVV).
+ if (HasEVEX_K)
+ ++FirstMemOp;// Skip the mask register
return FirstMemOp;
}
- case X86II::MRM_C1: case X86II::MRM_C2: case X86II::MRM_C3:
- case X86II::MRM_C4: case X86II::MRM_C8: case X86II::MRM_C9:
- case X86II::MRM_CA: case X86II::MRM_CB: case X86II::MRM_E8:
- case X86II::MRM_F0: case X86II::MRM_F8: case X86II::MRM_F9:
- case X86II::MRM_D0: case X86II::MRM_D1: case X86II::MRM_D4:
- case X86II::MRM_D5: case X86II::MRM_D6: case X86II::MRM_D8:
- case X86II::MRM_D9: case X86II::MRM_DA: case X86II::MRM_DB:
- case X86II::MRM_DC: case X86II::MRM_DD: case X86II::MRM_DE:
- case X86II::MRM_DF:
+ case X86II::MRM_C0: case X86II::MRM_C1: case X86II::MRM_C2:
+ case X86II::MRM_C3: case X86II::MRM_C4: case X86II::MRM_C8:
+ case X86II::MRM_C9: case X86II::MRM_CA: case X86II::MRM_CB:
+ case X86II::MRM_CF: case X86II::MRM_D0: case X86II::MRM_D1:
+ case X86II::MRM_D4: case X86II::MRM_D5: case X86II::MRM_D6:
+ case X86II::MRM_D7: case X86II::MRM_D8: case X86II::MRM_D9:
+ case X86II::MRM_DA: case X86II::MRM_DB: case X86II::MRM_DC:
+ case X86II::MRM_DD: case X86II::MRM_DE: case X86II::MRM_DF:
+ case X86II::MRM_E0: case X86II::MRM_E1: case X86II::MRM_E2:
+ case X86II::MRM_E3: case X86II::MRM_E4: case X86II::MRM_E5:
+ case X86II::MRM_E8: case X86II::MRM_E9: case X86II::MRM_EA:
+ case X86II::MRM_EB: case X86II::MRM_EC: case X86II::MRM_ED:
+ case X86II::MRM_EE: case X86II::MRM_F0: case X86II::MRM_F1:
+ case X86II::MRM_F2: case X86II::MRM_F3: case X86II::MRM_F4:
+ case X86II::MRM_F5: case X86II::MRM_F6: case X86II::MRM_F7:
+ case X86II::MRM_F8: case X86II::MRM_F9: case X86II::MRM_FA:
+ case X86II::MRM_FB: case X86II::MRM_FC: case X86II::MRM_FD:
+ case X86II::MRM_FE: case X86II::MRM_FF:
return -1;
}
}