JVM command 2

0x59dup copies the top number of stacks and pushes the copies to the top of the stack. 0x5adup_x1 copies the top number of stacks and pushes the two copies to the top of the stack. 0x5bdup_x2 copy the top number of stacks and press three (or two) copies to the top of the stack. 0x5cdup2 copies one (long or double) or two (other) numbers at the top of the stack and pushes the copy to the top of the stack. 0x5ddup

0x59 dup copies the top number of stacks and pushes the copies to the top of the stack. 0x5a dup_x1 copies the top number of stacks and pushes two copies to the top of the stack. 0x5b dup_x2 copies the top number of stacks and pushes three (or two) copies to the top of the stack. 0x5c dup2 copies one (long or double) or two (other) numbers at the top of the stack and pushes the copy to the top of the stack. 0x5d dup

0x59 dup copies the top number of stacks and pushes the copy value to the top of the stack.

0x5a dup_x1 copies the top number of stacks and pushes the two copies to the top of the stack.

0x5b dup_x2 copies the top number of stacks and pushes three (or two) copies to the top of the stack.

0x5c dup2 copies one (long or double) or two (other) values at the top of the stack and pushes the copy value to the top of the stack.

0x5d dup2_x1 dup_x1 command dual version

0x5e dup2_x2 dup_x2 command dual version

0x5f swap swaps the top two values of the stack (values cannot be of the long or double type ).

0x60 iadd adds the top two int values of the stack and pushes the result to the top of the stack.

0x61 ladd adds the top two long values of the stack and pushes the result to the top of the stack.

0x62 fadd adds the top two float values of the stack and pushes the result to the top of the stack.

0x63 dadd adds the top two double values of the stack and pushes the result to the top of the stack.

0x64 isub subtract the top two int values of the stack and press the result to the top of the stack.

0x65	Lsub	Subtract the two long values at the top of the stack and press the result to the top of the stack.
0x66	Fsub	Subtract the two float values at the top of the stack and press the result to the top of the stack.
0x67	Dsub	Subtract the two double values at the top of the stack and press the result to the top of the stack.
0x68	Imul	Multiply the two int-type values at the top of the stack and press the result to the top of the stack ..
0x69	Lmul	Multiply the two long-type values at the top of the stack and press the result to the top of the stack.
0x6a	Fmul	Multiply the top two float values of the stack and press the result to the top of the stack.
0x6b	Dmul	Multiply the two double values at the top of the stack and press the result to the top of the stack.
0x6c	Ip	Remove the two int-type values at the top of the stack and press the result to the top of the stack.
0x6d	Lp	Remove the two long values at the top of the stack and press the result to the top of the stack.
0x6e	Fp	Remove the top two float values of the stack and press the result to the top of the stack.
0x6f	Dp	Remove the top two double values of the stack and press the result to the top of the stack.
0x70	Irem	Perform the modulo operation on the top two int values of the stack and press the result to the top of the stack.
0x71	Lrem	Perform the modulo operation on the top two long values of the stack and press the result to the top of the stack.
0x72	Frem	Perform the modulo operation on the top two float values of the stack and press the result to the top of the stack.
0x73	Drem	Perform the modulo operation on the top two double values of the stack and press the result to the top of the stack.
0x74	Ineg	Take the int value at the top of the stack as a negative value and press the result to the top of the stack.
0x75	Lneg	Take the long value at the top of the stack as a negative value and press the result to the top of the stack.
0x76	Fneg	Take the float value at the top of the stack as a negative value and press the result to the top of the stack.
0x77	Dneg	Take the double type value at the top of the stack as a negative value and press the result to the top of the stack.
0x78	Ishl	Shift the int value left to the specified number of digits and press the result to the top of the stack.
0x79	Lshl	Shift the long value left to the specified number of digits and press the result to the top of the stack.
0x7a	Ishr	Shift the right (Signed) value of the int type to the specified number of digits and press the result to the top of the stack.
0x7b	Lshr	Shift the right (Signed) value of the long type to the specified number of digits and press the result to the top of the stack.
0x7c	Iushr	Shift the right (unsigned) value of the int type to the specified number of digits and press the result to the top of the stack.
0x7d	Lushr	Shift the right (unsigned) value of the long value to the specified number of digits and press the result to the top of the stack.
0x7e	Iand	Set the top two int values of the stack as "bitwise AND" and press the result to the top of the stack.
0x7f	Land	Set the top two long values of the stack as "bitwise AND" and press the result to the top of the stack.
0x80	Ior	Use the two int-type values at the top of the stack as "bitwise OR" and press the result to the top of the stack.

0x81	Lor	Set the top two long values of the stack as "bitwise OR" and press the result to the top of the stack.
0x82	Ixor	Use the two int-type values at the top of the stack as "bitwise XOR" and press the result to the top of the stack.
0x83	Lxor	Set the top two long values of the stack as "bitwise XOR" and press the result to the top of the stack.
0x84	Iinc	Adds a specified value to the specified int type variable.
0x85	I2l	Forcibly convert the int value at the top of the stack to a long value and press the result to the top of the stack.
0x86	I2f	Forcibly convert the int value of the stack to a float value and press the result to the top of the stack.
0x87	I2d	Forcibly convert the int value at the top of the stack to a double value and press the result to the top of the stack.
0x88	L2i	Forcibly convert the long type value at the top of the stack to an int type value and press the result to the top of the stack.
0x89	L2f	Forcibly convert the long value of the top stack to a float value and press the result to the top of the stack.
0x8a	L2d	Forcibly convert the value of the long type at the top of the stack to a value of the double type and press the result to the top of the stack.
0x8b	F2i	Forcibly convert the top float value of the stack to an int value and press the result to the top of the stack.
0x8c	F2l	Forcibly convert the top float value of the stack to a long value and press the result to the top of the stack.
0x8d	F2d	Forcibly convert the top float value of the stack to a double value and press the result to the top of the stack.
0x8e	D2i	Forcibly convert the double type value at the top of the stack to an int type value and press the result to the top of the stack.
0x8f	D2l	Forcibly convert the double value at the top of the stack to a long value and press the result to the top of the stack.
0x90	D2f	Forcibly convert the double value at the top of the stack to a float value and press the result to the top of the stack.
0x91	I2b	Forcibly convert the int value at the top of the stack to a byte value and press the result to the top of the stack.
0x92	I2c	Forcibly convert the int value at the top of the stack to a char value and press the result to the top of the stack.
0x93	I2s	Forcibly convert the int value at the top of the stack to the short value and press the result to the top of the stack.
0x94	Lcmp	Compare the two long values at the top of the stack, and press the result (,-1) into the top of the stack.

0x95	Fcmpl	Compare the top two float values of the stack and press the result (,-1) to the top of the stack. When one of the values is NaN, press-1 to the top of the stack.
0x96	Fcmpg	Compare the top two float values of the stack and press the result (,-1) to the top of the stack. When one of the values is NaN, press 1 to the top of the stack.
0x97	Dcmpl	Compare the values of the double type at the top of the stack and press the result (,-1) to the top of the stack. When one value is NaN, press-1 to the top of the stack.
0x98	Dcmpg	Compare the values of the double type at the top of the stack and press the result (,-1) into the top of the stack. When one of the values is NaN, press 1 to the top of the stack.
0x99	Ifeq	Jump when the int value at the top of the stack is equal to 0.
0x9a	Ifne	Jump when the int value at the top of the stack is not equal to 0.
0x9b	Iflt	Jump when the int value at the top of the stack is smaller than 0.
0x9c	Ifge	Jump when the int value at the top of the stack is greater than or equal to 0.
0x9d	Ifgt	Jump when the int value at the top of the stack is greater than 0.
0x9e	Ifle	Jump when the int value at the top of the stack is less than or equal to 0.
0x9f	If_icmpeq	Compare the two int-type values at the top of the stack, and jump when the result is equal to 0.
0xa0	If_icmpne	Compare the values of the two int types at the top of the stack. When the result is not equal to 0, the system jumps.
0xa1	If_icmplt	Compare the top two int values of the stack. When the result is smaller than 0, the system jumps.
0xa2	If_icmpge	Compare the two int-type values at the top of the stack. When the result is greater than or equal to 0, the system jumps.
0xa3	If_icmpgt	Compare the values of the top two int types on the stack. When the result is greater than 0, it jumps.
0xa4	If_icmple	Compare the values of the two int types at the top of the stack. When the result is smaller than or equal to 0, the system jumps.
0xa5	If_acmpeq	Compare the two reference values at the top of the stack, and jump when the results are equal.
0xa6	If_acmpne	Compare the two reference values at the top of the stack, and jump when the results are not equal.
0xa7	Goto	Unconditional jump.
0xa8	Jsr	Jump to the specified 16-bit offset and press the next jsr instruction address to the top of the stack.
0xa9	Ret	Return the command location of the index specified by the local variable (usually used in combination with jsr and jsr_w ).
0xaa	Tableswitch	It is used for switch conditional jump, and the case value is continuous (Variable Length command ).

0xab	Lookupswitch	Used for switch conditional jump, case value is not continuous (Variable Length command ).
0xac	Ireturn	Returns int from the current method.
0xad	Lreturn	Returns long from the current method.
0xae	Freturn	Returns float from the current method.
0xaf	Dreturn	Returns double from the current method.
0xb0	Areturn	Returns an object reference from the current method.
0xb1	Return	Return void from the current method.
0xb2	Getstatic	Obtains the static domain of the specified class and pushes its value to the top of the stack.
0xb3	Putstatic	Assign values to the static fields of the specified class.
0xb4	Getfield	Obtains the instance domain of the specified class and pushes its value to the top of the stack.
0xb5	Putfield	Assign values to the instance domains of the specified class.
0xb6	Invokevirtual	Call the instance method.
0xb7	Invokespecial	Call the superclass constructor, instance initialization method, and private method.
0xb8	Invokestatic	Call static methods.
0xb9	Invokeinterfac E	Call the interface method.
0xba	Invokedynamic	Call Dynamic Link Method 1.
0xbb	New	Create an object and push its reference value to the top of the stack.
0xbc	Newarray	Create an array of the specified original type (such as int, float, char...) and press its reference value to the top of the stack.
0xbd	Anewarray	Create an array of referenced types (such as classes, interfaces, and arrays) and press the referenced values Top of the stack.
0xbe	Arraylength	Obtain the length value of the array and press it to the top of the stack.
0xbf	Athrow	Throw an exception at the top of the stack.
0xc0	Checkcast	Checks type conversion and throws ClassCastException.

0xc1 instanceof checks whether the object is an instance of the specified class. If it is to press 1 to the top of the stack, otherwise 0 to the top of the stack.

0xc2 monitorenter obtains the object's monitor, which is used for synchronization methods or synchronization blocks.

0xc3 monitorexit releases the monitor of the object for Synchronous methods or synchronization blocks.

0xc4 wide extends the index width for accessing the local variable table.

0xc5 multianewarray creates a multi-dimensional array of the specified type and dimension (when executing this command, the length value of each dimension must be included in the Operation stack), and pushes the reference value to the top of the stack.

Jump when 0xc6 ifnull is null.

Jump when 0xc7 ifnonnull is not null.

0xc8 goto_w unconditional jump (wide index ).

0xc9 jsr_w redirects to the specified 32-bit address offset and pushes the next instruction address of jsr_w to the top of the stack.

Reserved command

0xca breakpoint indicates the breakpoint during debugging.

0xfe impdep1 is a language backdoor used in a specific hardware.

0xff impdep1 is a language backdoor used in a specific hardware.