diff --git a/src/libmach/dwarfeval.c b/src/libmach/dwarfeval.c
new file mode 100644
index 0000000..0da7273
--- /dev/null
+++ b/src/libmach/dwarfeval.c
@@ -0,0 +1,62 @@
+	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
+