27 lines
1.4 KiB
Plaintext
27 lines
1.4 KiB
Plaintext
// configuration file for IJVM Assembler
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0x10 BIPUSH byte // Push byte onto stack
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0x59 DUP // Copy top word on stack; push onto stack
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0xA7 GOTO label // Unconditional jump
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0x60 IADD // Pop two words from stack; push their sum
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0x7E IAND // Pop two words from stack; push Boolean AND
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0x99 IFEQ label // Pop word from stack; branch if it is zero
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0x9B IFLT label // Pop word from stack; branch if it is less than zero
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0x9F IF_ICMPEQ label // Pop two words from stack; branch if equal
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0x84 IINC varnum const // Add a constant to a local variable
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0x15 ILOAD varnum // Push local variable onto stack
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0xB6 INVOKEVIRTUAL offset // Invoke a method
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0xB0 IOR // Pop two words from stack; push Boolean OR
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0xAC IRETURN // Return from method with integer value
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0x36 ISTORE varnum // Pop word from stack; store in local variable
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0x64 ISUB // Pop two words from stack; push their difference
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0x13 LDC_W index // Push constant from constant pool onto stack
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0x00 NOP // Do nothing
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0x57 POP // Delete word on top of stack
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0x5F SWAP // Swap the two top words on the stack
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0xC4 WIDE // Prefix instruction; next instruction has 16-bit index
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0xFF HALT // halt the simulator
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0xFE ERR // print ERROR and halt
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0xFD OUT // Pop a word from the stack and use the low order 8-bits as an ASCI character to display on screen
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0xFC IN // Read a character from standard input and put it in the low order 8-bits of a word pushed onto the stack
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0x42 JIFEVEN label
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