}
break;
}
+ case X86II::MRMXm:
case X86II::MRM0m: case X86II::MRM1m:
case X86II::MRM2m: case X86II::MRM3m:
case X86II::MRM4m: case X86II::MRM5m:
break;
}
+ 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:
+ case X86II::MRM6r: case X86II::MRM7r: {
if (HasVEX_4V) // Skip the register dst (which is encoded in VEX_VVVV).
++CurOp;
EmitByte(BaseOpcode, CurByte, OS);
+ uint64_t Form = TSFlags & X86II::FormMask;
EmitRegModRMByte(MI.getOperand(CurOp++),
- (TSFlags & X86II::FormMask)-X86II::MRM0r,
+ (Form == X86II::MRMXr) ? 0 : Form-X86II::MRM0r,
CurByte, OS);
break;
+ }
+
+ case X86II::MRMXm:
case X86II::MRM0m: case X86II::MRM1m:
case X86II::MRM2m: case X86II::MRM3m:
case X86II::MRM4m: case X86II::MRM5m:
- case X86II::MRM6m: case X86II::MRM7m:
+ case X86II::MRM6m: case X86II::MRM7m: {
if (HasVEX_4V) // Skip the register dst (which is encoded in VEX_VVVV).
++CurOp;
EmitByte(BaseOpcode, CurByte, OS);
- EmitMemModRMByte(MI, CurOp, (TSFlags & X86II::FormMask)-X86II::MRM0m,
+ uint64_t Form = TSFlags & X86II::FormMask;
+ EmitMemModRMByte(MI, CurOp, (Form == X86II::MRMXm) ? 0 : Form-X86II::MRM0m,
TSFlags, CurByte, OS, Fixups, STI);
CurOp += X86::AddrNumOperands;
break;
+ }
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_D0:
RawFrmSrc = 8,
RawFrmDst = 9,
RawFrmDstSrc = 10,
+ MRMXr = 14, MRMXm = 15,
MRM0r = 16, MRM1r = 17, MRM2r = 18, MRM3r = 19,
MRM4r = 20, MRM5r = 21, MRM6r = 22, MRM7r = 23,
MRM0m = 24, MRM1m = 25, MRM2m = 26, MRM3m = 27,
};
}
-// If rows are added to the opcode extension tables, then corresponding entries
-// must be added here.
-//
-// If the row corresponds to a single byte (i.e., 8f), then add an entry for
-// that byte to ONE_BYTE_EXTENSION_TABLES.
-//
-// If the row corresponds to two bytes where the first is 0f, add an entry for
-// the second byte to TWO_BYTE_EXTENSION_TABLES.
-//
-// If the row corresponds to some other set of bytes, you will need to modify
-// the code in RecognizableInstr::emitDecodePath() as well, and add new prefixes
-// to the X86 TD files, except in two cases: if the first two bytes of such a
-// new combination are 0f 38 or 0f 3a, you just have to add maps called
-// THREE_BYTE_38_EXTENSION_TABLES and THREE_BYTE_3A_EXTENSION_TABLES and add a
-// switch(Opcode) just below the case X86Local::T8: or case X86Local::TA: line
-// in RecognizableInstr::emitDecodePath().
-
-#define ONE_BYTE_EXTENSION_TABLES \
- EXTENSION_TABLE(80) \
- EXTENSION_TABLE(81) \
- EXTENSION_TABLE(82) \
- EXTENSION_TABLE(83) \
- EXTENSION_TABLE(8f) \
- EXTENSION_TABLE(c0) \
- EXTENSION_TABLE(c1) \
- EXTENSION_TABLE(c6) \
- EXTENSION_TABLE(c7) \
- EXTENSION_TABLE(d0) \
- EXTENSION_TABLE(d1) \
- EXTENSION_TABLE(d2) \
- EXTENSION_TABLE(d3) \
- EXTENSION_TABLE(f6) \
- EXTENSION_TABLE(f7) \
- EXTENSION_TABLE(fe) \
- EXTENSION_TABLE(ff)
-
-#define TWO_BYTE_EXTENSION_TABLES \
- EXTENSION_TABLE(00) \
- EXTENSION_TABLE(01) \
- EXTENSION_TABLE(0d) \
- EXTENSION_TABLE(18) \
- EXTENSION_TABLE(71) \
- EXTENSION_TABLE(72) \
- EXTENSION_TABLE(73) \
- EXTENSION_TABLE(ae) \
- EXTENSION_TABLE(ba) \
- EXTENSION_TABLE(c7)
-
-#define THREE_BYTE_38_EXTENSION_TABLES \
- EXTENSION_TABLE(F3)
-
-#define XOP9_MAP_EXTENSION_TABLES \
- EXTENSION_TABLE(01) \
- EXTENSION_TABLE(02)
-
using namespace X86Disassembler;
-/// needsModRMForDecode - Indicates whether a particular instruction requires a
-/// ModR/M byte for the instruction to be properly decoded. For example, a
-/// MRMDestReg instruction needs the Mod field in the ModR/M byte to be set to
-/// 0b11.
-///
-/// @param form - The form of the instruction.
-/// @return - true if the form implies that a ModR/M byte is required, false
-/// otherwise.
-static bool needsModRMForDecode(uint8_t form) {
- return (form == X86Local::MRMDestReg ||
- form == X86Local::MRMDestMem ||
- form == X86Local::MRMSrcReg ||
- form == X86Local::MRMSrcMem ||
- (form >= X86Local::MRM0r && form <= X86Local::MRM7r) ||
- (form >= X86Local::MRM0m && form <= X86Local::MRM7m));
-}
-
/// isRegFormat - Indicates whether a particular form requires the Mod field of
/// the ModR/M byte to be 0b11.
///
static bool isRegFormat(uint8_t form) {
return (form == X86Local::MRMDestReg ||
form == X86Local::MRMSrcReg ||
+ form == X86Local::MRMXr ||
(form >= X86Local::MRM0r && form <= X86Local::MRM7r));
}
HANDLE_OPTIONAL(immediate)
HANDLE_OPTIONAL(immediate) // above might be a register in 7:4
break;
+ case X86Local::MRMXr:
case X86Local::MRM0r:
case X86Local::MRM1r:
case X86Local::MRM2r:
HANDLE_OPTIONAL(relocation)
HANDLE_OPTIONAL(immediate)
break;
+ case X86Local::MRMXm:
case X86Local::MRM0m:
case X86Local::MRM1m:
case X86Local::MRM2m:
switch (OpMap) {
default: llvm_unreachable("Invalid map!");
- // Extended two-byte opcodes can start with 66 0f, f2 0f, f3 0f, or 0f
+ case X86Local::OB:
case X86Local::TB:
- opcodeType = TWOBYTE;
-
- switch (Opcode) {
- default:
- if (needsModRMForDecode(Form))
- filter = new ModFilter(isRegFormat(Form));
- else
- filter = new DumbFilter();
- break;
-#define EXTENSION_TABLE(n) case 0x##n:
- TWO_BYTE_EXTENSION_TABLES
-#undef EXTENSION_TABLE
- switch (Form) {
- default:
- llvm_unreachable("Unhandled two-byte extended opcode");
- case X86Local::MRM0r:
- case X86Local::MRM1r:
- case X86Local::MRM2r:
- case X86Local::MRM3r:
- case X86Local::MRM4r:
- case X86Local::MRM5r:
- case X86Local::MRM6r:
- case X86Local::MRM7r:
- filter = new ExtendedFilter(true, Form - X86Local::MRM0r);
- break;
- case X86Local::MRM0m:
- case X86Local::MRM1m:
- case X86Local::MRM2m:
- case X86Local::MRM3m:
- case X86Local::MRM4m:
- case X86Local::MRM5m:
- case X86Local::MRM6m:
- case X86Local::MRM7m:
- filter = new ExtendedFilter(false, Form - X86Local::MRM0m);
- break;
- MRM_MAPPING
- } // switch (Form)
- break;
- } // switch (Opcode)
- opcodeToSet = Opcode;
- break;
case X86Local::T8:
- opcodeType = THREEBYTE_38;
- switch (Opcode) {
- default:
- if (needsModRMForDecode(Form))
- filter = new ModFilter(isRegFormat(Form));
- else
- filter = new DumbFilter();
- break;
-#define EXTENSION_TABLE(n) case 0x##n:
- THREE_BYTE_38_EXTENSION_TABLES
-#undef EXTENSION_TABLE
- switch (Form) {
- default:
- llvm_unreachable("Unhandled two-byte extended opcode");
- case X86Local::MRM0r:
- case X86Local::MRM1r:
- case X86Local::MRM2r:
- case X86Local::MRM3r:
- case X86Local::MRM4r:
- case X86Local::MRM5r:
- case X86Local::MRM6r:
- case X86Local::MRM7r:
- filter = new ExtendedFilter(true, Form - X86Local::MRM0r);
- break;
- case X86Local::MRM0m:
- case X86Local::MRM1m:
- case X86Local::MRM2m:
- case X86Local::MRM3m:
- case X86Local::MRM4m:
- case X86Local::MRM5m:
- case X86Local::MRM6m:
- case X86Local::MRM7m:
- filter = new ExtendedFilter(false, Form - X86Local::MRM0m);
- break;
- MRM_MAPPING
- } // switch (Form)
- break;
- } // switch (Opcode)
- opcodeToSet = Opcode;
- break;
case X86Local::TA:
- opcodeType = THREEBYTE_3A;
- if (needsModRMForDecode(Form))
- filter = new ModFilter(isRegFormat(Form));
- else
- filter = new DumbFilter();
- opcodeToSet = Opcode;
- break;
case X86Local::A6:
- opcodeType = THREEBYTE_A6;
- if (needsModRMForDecode(Form))
- filter = new ModFilter(isRegFormat(Form));
- else
- filter = new DumbFilter();
- opcodeToSet = Opcode;
- break;
case X86Local::A7:
- opcodeType = THREEBYTE_A7;
- if (needsModRMForDecode(Form))
- filter = new ModFilter(isRegFormat(Form));
- else
- filter = new DumbFilter();
- opcodeToSet = Opcode;
- break;
case X86Local::XOP8:
- opcodeType = XOP8_MAP;
- if (needsModRMForDecode(Form))
- filter = new ModFilter(isRegFormat(Form));
- else
- filter = new DumbFilter();
- opcodeToSet = Opcode;
- break;
case X86Local::XOP9:
- opcodeType = XOP9_MAP;
- switch (Opcode) {
+ case X86Local::XOPA:
+ switch (OpMap) {
+ default: llvm_unreachable("Unexpected map!");
+ case X86Local::OB: opcodeType = ONEBYTE; break;
+ case X86Local::TB: opcodeType = TWOBYTE; break;
+ case X86Local::T8: opcodeType = THREEBYTE_38; break;
+ case X86Local::TA: opcodeType = THREEBYTE_3A; break;
+ case X86Local::A6: opcodeType = THREEBYTE_A6; break;
+ case X86Local::A7: opcodeType = THREEBYTE_A7; break;
+ case X86Local::XOP8: opcodeType = XOP8_MAP; break;
+ case X86Local::XOP9: opcodeType = XOP9_MAP; break;
+ case X86Local::XOPA: opcodeType = XOPA_MAP; break;
+ }
+
+ switch (Form) {
default:
- if (needsModRMForDecode(Form))
- filter = new ModFilter(isRegFormat(Form));
- else
- filter = new DumbFilter();
- break;
-#define EXTENSION_TABLE(n) case 0x##n:
- XOP9_MAP_EXTENSION_TABLES
-#undef EXTENSION_TABLE
- switch (Form) {
- default:
- llvm_unreachable("Unhandled XOP9 extended opcode");
- case X86Local::MRM0r:
- case X86Local::MRM1r:
- case X86Local::MRM2r:
- case X86Local::MRM3r:
- case X86Local::MRM4r:
- case X86Local::MRM5r:
- case X86Local::MRM6r:
- case X86Local::MRM7r:
- filter = new ExtendedFilter(true, Form - X86Local::MRM0r);
- break;
- case X86Local::MRM0m:
- case X86Local::MRM1m:
- case X86Local::MRM2m:
- case X86Local::MRM3m:
- case X86Local::MRM4m:
- case X86Local::MRM5m:
- case X86Local::MRM6m:
- case X86Local::MRM7m:
- filter = new ExtendedFilter(false, Form - X86Local::MRM0m);
- break;
- MRM_MAPPING
- } // switch (Form)
+ filter = new DumbFilter();
break;
- } // switch (Opcode)
- opcodeToSet = Opcode;
- break;
- case X86Local::XOPA:
- opcodeType = XOPA_MAP;
- if (needsModRMForDecode(Form))
+ case X86Local::MRMDestReg: case X86Local::MRMDestMem:
+ case X86Local::MRMSrcReg: case X86Local::MRMSrcMem:
+ case X86Local::MRMXr: case X86Local::MRMXm:
filter = new ModFilter(isRegFormat(Form));
- else
- filter = new DumbFilter();
+ break;
+ case X86Local::MRM0r: case X86Local::MRM1r:
+ case X86Local::MRM2r: case X86Local::MRM3r:
+ case X86Local::MRM4r: case X86Local::MRM5r:
+ case X86Local::MRM6r: case X86Local::MRM7r:
+ filter = new ExtendedFilter(true, Form - X86Local::MRM0r);
+ break;
+ case X86Local::MRM0m: case X86Local::MRM1m:
+ case X86Local::MRM2m: case X86Local::MRM3m:
+ case X86Local::MRM4m: case X86Local::MRM5m:
+ case X86Local::MRM6m: case X86Local::MRM7m:
+ filter = new ExtendedFilter(false, Form - X86Local::MRM0m);
+ break;
+ MRM_MAPPING
+ } // switch (Form)
+
opcodeToSet = Opcode;
break;
case X86Local::D8:
filter = new ExactFilter(Opcode);
opcodeToSet = 0xd8 + (OpMap - X86Local::D8);
break;
- case X86Local::OB:
- opcodeType = ONEBYTE;
- switch (Opcode) {
-#define EXTENSION_TABLE(n) case 0x##n:
- ONE_BYTE_EXTENSION_TABLES
-#undef EXTENSION_TABLE
- switch (Form) {
- default:
- llvm_unreachable("Fell through the cracks of a single-byte "
- "extended opcode");
- case X86Local::MRM0r:
- case X86Local::MRM1r:
- case X86Local::MRM2r:
- case X86Local::MRM3r:
- case X86Local::MRM4r:
- case X86Local::MRM5r:
- case X86Local::MRM6r:
- case X86Local::MRM7r:
- filter = new ExtendedFilter(true, Form - X86Local::MRM0r);
- break;
- case X86Local::MRM0m:
- case X86Local::MRM1m:
- case X86Local::MRM2m:
- case X86Local::MRM3m:
- case X86Local::MRM4m:
- case X86Local::MRM5m:
- case X86Local::MRM6m:
- case X86Local::MRM7m:
- filter = new ExtendedFilter(false, Form - X86Local::MRM0m);
- break;
- MRM_MAPPING
- } // switch (Form)
- break;
- case 0xd8:
- case 0xd9:
- case 0xda:
- case 0xdb:
- case 0xdc:
- case 0xdd:
- case 0xde:
- case 0xdf:
- switch (Form) {
- default:
- llvm_unreachable("Unhandled escape opcode form");
- case X86Local::MRM0r:
- case X86Local::MRM1r:
- case X86Local::MRM2r:
- case X86Local::MRM3r:
- case X86Local::MRM4r:
- case X86Local::MRM5r:
- case X86Local::MRM6r:
- case X86Local::MRM7r:
- filter = new ExtendedFilter(true, Form - X86Local::MRM0r);
- break;
- case X86Local::MRM0m:
- case X86Local::MRM1m:
- case X86Local::MRM2m:
- case X86Local::MRM3m:
- case X86Local::MRM4m:
- case X86Local::MRM5m:
- case X86Local::MRM6m:
- case X86Local::MRM7m:
- filter = new ExtendedFilter(false, Form - X86Local::MRM0m);
- break;
- } // switch (Form)
- break;
- default:
- if (needsModRMForDecode(Form))
- filter = new ModFilter(isRegFormat(Form));
- else
- filter = new DumbFilter();
- break;
- } // switch (Opcode)
- opcodeToSet = Opcode;
} // switch (OpMap)
assert(opcodeType != (OpcodeType)-1 &&