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OpAddr = 0x03, // 1 op, const addr
OpDeref = 0x06,
OpConst1u = 0x08, // 1 op, 1 byte const
OpConst1s = 0x09, // " signed
OpConst2u = 0x0A // 1 op, 2 byte const
OpConst2s = 0x0B, // " signed
OpConst4u = 0x0C, // 1 op, 4 byte const
OpConst4s = 0x0D, // " signed
OpConst8u = 0x0E, // 1 op, 8 byte const
OpConst8s = 0x0F, // " signed
OpConstu = 0x10, // 1 op, LEB128 const
OpConsts = 0x11, // " signed
OpDup = 0x12,
OpDrop = 0x13,
OpOver = 0x14,
OpPick = 0x15, // 1 op, 1 byte stack index
OpSwap = 0x16,
OpRot = 0x17,
OpXderef = 0x18,
OpAbs = 0x19,
OpAnd = 0x1A,
OpDiv = 0x1B,
OpMinus = 0x1C,
OpMod = 0x1D,
OpMul = 0x1E,
OpNeg = 0x1F,
OpNot = 0x20,
OpOr = 0x21,
OpPlus = 0x22,
OpPlusUconst = 0x23, // 1 op, ULEB128 addend
OpShl = 0x24,
OpShr = 0x25,
OpShra = 0x26,
OpXor = 0x27,
OpSkip = 0x2F, // 1 op, signed 2-byte constant
OpBra = 0x28, // 1 op, signed 2-byte constant
OpEq = 0x29,
OpGe = 0x2A,
OpGt = 0x2B,
OpLe = 0x2C,
OpLt = 0x2D,
OpNe = 0x2E,
OpLit0 = 0x30,
// OpLitN = OpLit0 + N for N = 0..31
OpReg0 = 0x50,
// OpRegN = OpReg0 + N for N = 0..31
OpBreg0 = 0x70, // 1 op, signed LEB128 constant
// OpBregN = OpBreg0 + N for N = 0..31
OpRegx = 0x90, // 1 op, ULEB128 register
OpFbreg = 0x91, // 1 op, SLEB128 offset
OpBregx = 0x92, // 2 op, ULEB128 reg, SLEB128 off
OpPiece = 0x93, // 1 op, ULEB128 size of piece
OpDerefSize = 0x94, // 1-byte size of data retrieved
OpXderefSize = 0x95, // 1-byte size of data retrieved
OpNop = 0x96,
// next four new in Dwarf v3
OpPushObjAddr = 0x97,
OpCall2 = 0x98, // 2-byte offset of DIE
OpCall4 = 0x99, // 4-byte offset of DIE
OpCallRef = 0x9A, // 4- or 8- byte offset of DIE
// 0xE0-0xFF reserved for user-specific
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