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OPDEF(UNDEF)
OPDEF(IGNORE) /* no-op */
OPDEF(BREAK) /* ??? */
OPDEF(ENTER) /* Begin subroutine. */
OPDEF(LEAVE) /* End subroutine. */
OPDEF(CALL) /* Call subroutine. */
OPDEF(PUSH) /* push to stack. */
OPDEF(POP) /* discard top-of-stack. */
OPDEF(CONST) /* load constant to stack. */
OPDEF(LOCAL) /* get local variable. */
OPDEF(JUMP) /* unconditional jump. */
OPDEF(EQ) /* compare integers, jump if equal. */
OPDEF(NE) /* compare integers, jump if not equal. */
OPDEF(LTI) /* compare integers, jump if less-than. */
OPDEF(LEI) /* compare integers, jump if less-than-or-equal. */
OPDEF(GTI) /* compare integers, jump if greater-than. */
OPDEF(GEI) /* compare integers, jump if greater-than-or-equal. */
OPDEF(LTU) /* compare unsigned integers, jump if less-than */
OPDEF(LEU) /* compare unsigned integers, jump if less-than-or-equal */
OPDEF(GTU) /* compare unsigned integers, jump if greater-than */
OPDEF(GEU) /* compare unsigned integers, jump if greater-than-or-equal */
OPDEF(EQF) /* compare floats, jump if equal */
OPDEF(NEF) /* compare floats, jump if not-equal */
OPDEF(LTF) /* compare floats, jump if less-than */
OPDEF(LEF) /* compare floats, jump if less-than-or-equal */
OPDEF(GTF) /* compare floats, jump if greater-than */
OPDEF(GEF) /* compare floats, jump if greater-than-or-equal */
OPDEF(LOAD1) /* load 1-byte from memory */
OPDEF(LOAD2) /* load 2-byte from memory */
OPDEF(LOAD4) /* load 4-byte from memory */
OPDEF(STORE1) /* store 1-byte to memory */
OPDEF(STORE2) /* store 2-byte to memory */
OPDEF(STORE4) /* store 4-byte to memory */
OPDEF(ARG) /* marshal argument */
OPDEF(BLOCK_COPY) /* block copy... */
OPDEF(SEX8) /* Pedophilia */
OPDEF(SEX16) /* Sign-Extend 16-bit */
OPDEF(NEGI) /* Negate integer. */
OPDEF(ADD) /* Add integers (two's complement). */
OPDEF(SUB) /* Subtract integers (two's complement). */
OPDEF(DIVI) /* Divide signed integers. */
OPDEF(DIVU) /* Divide unsigned integers. */
OPDEF(MODI) /* Modulus (signed). */
OPDEF(MODU) /* Modulus (unsigned). */
OPDEF(MULI) /* Multiply signed integers. */
OPDEF(MULU) /* Multiply unsigned integers. */
OPDEF(BAND) /* Bitwise AND */
OPDEF(BOR) /* Bitwise OR */
OPDEF(BXOR) /* Bitwise eXclusive-OR */
OPDEF(BCOM) /* Bitwise COMplement */
OPDEF(LSH) /* Left-shift */
OPDEF(RSHI) /* Right-shift (algebraic; preserve sign) */
OPDEF(RSHU) /* Right-shift (bitwise; ignore sign) */
OPDEF(NEGF) /* Negate float */
OPDEF(ADDF) /* Add floats */
OPDEF(SUBF) /* Subtract floats */
OPDEF(DIVF) /* Divide floats */
OPDEF(MULF) /* Multiply floats */
OPDEF(CVIF) /* Convert to integer from float */
OPDEF(CVFI) /* Convert to float from integer */
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