Int Branching instructions
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parent
ede316cec3
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6610b09c16
4 changed files with 283 additions and 82 deletions
192
src/bytecode.rs
192
src/bytecode.rs
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@ -19,6 +19,9 @@ impl Bytecode {
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0x06 => (Instruction::PushConstInt3(), 1),
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0x07 => (Instruction::PushConstInt4(), 1),
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0x08 => (Instruction::PushConstInt5(), 1),
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0x0B => (Instruction::PushConstFloat0(), 1),
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0x0C => (Instruction::PushConstFloat1(), 1),
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0x0D => (Instruction::PushConstFloat2(), 1),
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0x0E => (Instruction::PushConstDouble0(), 1),
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0x0F => (Instruction::PushConstDouble1(), 1),
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@ -32,6 +35,10 @@ impl Bytecode {
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0x1B => (Instruction::LoadLocalInt1(), 1),
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0x1C => (Instruction::LoadLocalInt2(), 1),
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0x1D => (Instruction::LoadLocalInt3(), 1),
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0x22 => (Instruction::LoadLocalFloat0(), 1),
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0x23 => (Instruction::LoadLocalFloat1(), 1),
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0x24 => (Instruction::LoadLocalFloat2(), 1),
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0x25 => (Instruction::LoadLocalFloat3(), 1),
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0x26 => (Instruction::LoadLocalDouble0(), 1),
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0x27 => (Instruction::LoadLocalDouble1(), 1),
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0x28 => (Instruction::LoadLocalDouble2(), 1),
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@ -67,6 +74,8 @@ impl Bytecode {
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0x80 => (Instruction::OrInt(), 1),
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0x95 => (Instruction::CompareFloatL(), 1),
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0x96 => (Instruction::CompareFloatG(), 1),
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0x99 => {
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let bytes = [self.bytes[offset+1], self.bytes[offset+2]];
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(Instruction::BranchZero(i16::from_be_bytes(bytes)), 3)
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@ -116,6 +125,14 @@ impl Bytecode {
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let bytes = [self.bytes[offset+1], self.bytes[offset+2]];
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(Instruction::BranchIntLessEquals(i16::from_be_bytes(bytes)), 3)
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}
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0xA5 => {
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let bytes = [self.bytes[offset+1], self.bytes[offset+2]];
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(Instruction::BranchReferenceEquality(i16::from_be_bytes(bytes)), 3)
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}
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0xA6 => {
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let bytes = [self.bytes[offset+1], self.bytes[offset+2]];
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(Instruction::BranchReferenceInequality(i16::from_be_bytes(bytes)), 3)
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}
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0xAC => (Instruction::ReturnInt(), 1),
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0xA7 => {
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@ -138,6 +155,7 @@ impl Bytecode {
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0xBD => (Instruction::NewArray((self.bytes[offset+1] as u16) << 8 | self.bytes[offset+2] as u16), 3),
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0xBE => (Instruction::ArrayLength(), 1),
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0xC1 => (Instruction::InstanceOf((self.bytes[offset+1] as u16) << 8 | self.bytes[offset+2] as u16), 3),
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0xC2 => (Instruction::EnterMonitor(), 1),
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0xC3 => (Instruction::ExitMonitor(), 1),
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@ -180,99 +198,111 @@ impl Debug for Bytecode {
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#[derive(Debug)]
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#[repr(u8)]
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pub enum Instruction {
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NoOperation() = 0x00, // No-Operation
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PushNull() = 0x01, // ..., arrayref, index, value
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PushConstIntM1() = 0x02, // Push -1
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PushConstInt0() = 0x03, // Push 0
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PushConstInt1() = 0x04, // Push 1
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PushConstInt2() = 0x05, // Push 2
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PushConstInt3() = 0x06, // Push 3
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PushConstInt4() = 0x07, // Push 4
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PushConstInt5() = 0x08, // Push 5
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PushConstDouble0() = 0x0E, // Push 0.0
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PushConstDouble1() = 0x0F, // Push 1.0
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NoOperation() = 0x00, // No-Operation
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PushNull() = 0x01, // ..., arrayref, index, value
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PushConstIntM1() = 0x02, // Push -1
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PushConstInt0() = 0x03, // Push 0
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PushConstInt1() = 0x04, // Push 1
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PushConstInt2() = 0x05, // Push 2
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PushConstInt3() = 0x06, // Push 3
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PushConstInt4() = 0x07, // Push 4
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PushConstInt5() = 0x08, // Push 5
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PushConstFloat0() = 0x0B, // Push 0.0f
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PushConstFloat1() = 0x0C, // Push 1.0f
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PushConstFloat2() = 0x0D, // Push 2.0f
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PushConstDouble0() = 0x0E, // Push 0.0
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PushConstDouble1() = 0x0F, // Push 1.0
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LoadByteImmediate(u8) = 0x10, // push immediate short
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LoadShortImmediate(u16) = 0x11, // push immediate short
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LoadConstant(u8) = 0x12, // Push from constant pool
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LoadCostantWide(u16) = 0x13, // Push from constant pool with wide index, don't load
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// double or long or whatever
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LoadConstant64(u16) = 0x14, // Push Long or Double from constant pool
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LoadLocalInt0() = 0x1A, // Load int from local variable
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LoadLocalInt1() = 0x1B, // Load int from local variable
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LoadLocalInt2() = 0x1C, // Load int from local variable
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LoadLocalInt3() = 0x1D, // Load int from local variable
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LoadByteImmediate(u8) = 0x10, // push immediate short
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LoadShortImmediate(u16) = 0x11, // push immediate short
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LoadConstant(u8) = 0x12, // Push from constant pool
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LoadCostantWide(u16) = 0x13, // Push from constant pool with wide index, don't load
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// double or long or whatever
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LoadConstant64(u16) = 0x14, // Push Long or Double from constant pool
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LoadLocalInt0() = 0x1A, // Load int from local variable
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LoadLocalInt1() = 0x1B, // Load int from local variable
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LoadLocalInt2() = 0x1C, // Load int from local variable
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LoadLocalInt3() = 0x1D, // Load int from local variable
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LoadLocalDouble0() = 0x26, // Load local double variable reference onto stack
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LoadLocalDouble1() = 0x27, // Load local double variable reference onto stack
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LoadLocalDouble2() = 0x28, // Load local double variable reference onto stack
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LoadLocalDouble3() = 0x29, // Load local double variable reference onto stack
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LoadLocalReference0() = 0x2A, // Load local reference variable reference onto stack
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LoadLocalReference1() = 0x2B, // Load local reference variable reference onto stack
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LoadLocalReference2() = 0x2C, // Load local reference variable reference onto stack
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LoadLocalReference3() = 0x2D, // Load local reference variable reference onto stack
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LoadLocalFloat0() = 0x22, // Load local double variable reference onto stack
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LoadLocalFloat1() = 0x23, // Load local double variable reference onto stack
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LoadLocalFloat2() = 0x24, // Load local double variable reference onto stack
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LoadLocalFloat3() = 0x25, // Load local double variable reference onto stack
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LoadLocalDouble0() = 0x26, // Load local double variable reference onto stack
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LoadLocalDouble1() = 0x27, // Load local double variable reference onto stack
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LoadLocalDouble2() = 0x28, // Load local double variable reference onto stack
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LoadLocalDouble3() = 0x29, // Load local double variable reference onto stack
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LoadLocalReference0() = 0x2A, // Load local reference variable reference onto stack
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LoadLocalReference1() = 0x2B, // Load local reference variable reference onto stack
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LoadLocalReference2() = 0x2C, // Load local reference variable reference onto stack
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LoadLocalReference3() = 0x2D, // Load local reference variable reference onto stack
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ArrayElement() = 0x32, // load element from array
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StoreLocalInt(u8) = 0x36, // store into indexed local variable
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StoreLocalInt0() = 0x3B, // store int into local variable
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StoreLocalInt1() = 0x3C, // store int into local variable
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StoreLocalInt2() = 0x3D, // store int into local variable
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StoreLocalInt3() = 0x3E, // store int into local variable
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StoreReference0() = 0x4B, // store reference into local variable
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StoreReference1() = 0x4C, // store reference into local variable
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StoreReference2() = 0x4D, // store reference into local variable
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StoreReference3() = 0x4E, // store reference into local variable
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ArrayElement() = 0x32, // load element from array
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StoreLocalInt(u8) = 0x36, // store into indexed local variable
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StoreLocalInt0() = 0x3B, // store int into local variable
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StoreLocalInt1() = 0x3C, // store int into local variable
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StoreLocalInt2() = 0x3D, // store int into local variable
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StoreLocalInt3() = 0x3E, // store int into local variable
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StoreReference0() = 0x4B, // store reference into local variable
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StoreReference1() = 0x4C, // store reference into local variable
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StoreReference2() = 0x4D, // store reference into local variable
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StoreReference3() = 0x4E, // store reference into local variable
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StoreIntoRArray() = 0x53, // store value into reference array
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StoreIntoBArray() = 0x54, // store value into byte or boolean array
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Pop() = 0x57, // Pop top stack value
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Duplicate() = 0x59, // duplicate top stack value
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StoreIntoRArray() = 0x53, // store value into reference array
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StoreIntoBArray() = 0x54, // store value into byte or boolean array
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Pop() = 0x57, // Pop top stack value
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Duplicate() = 0x59, // duplicate top stack value
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AddInt() = 0x60, // int addition
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MultiplyInt() = 0x68, // int multiplication
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DivideInt() = 0x6C, // integer division, round toward zero and more rules
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DivideLong() = 0x6D, // long division
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AddInt() = 0x60, // int addition
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MultiplyInt() = 0x68, // int multiplication
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DivideInt() = 0x6C, // integer division, round toward zero and more rules
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DivideLong() = 0x6D, // long division
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ShiftIntRight() = 0x7a, // shift int
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ShiftIntRight() = 0x7a, // shift int
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OrInt() = 0x80, // value, value => or
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OrInt() = 0x80, // value, value => or
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BranchZero(i16) = 0x99, // branch if value == 0
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BranchNonZero(i16) = 0x9A, // branch if value != 0
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BranchNegative(i16) = 0x9B, // branch if value < 0
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BranchNonNegative(i16) = 0x9C, // branch if value <= 0
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BranchPositive(i16) = 0x9D, // branch if value > 0
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BranchNonPositive(i16) = 0x9E, // branch if value >= 0
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CompareFloatL() = 0x95, // compare float, push -1 if one is NaN
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CompareFloatG() = 0x96, // compare float, push 1 if one is NaN
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BranchZero(i16) = 0x99, // branch if value == 0
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BranchNonZero(i16) = 0x9A, // branch if value != 0
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BranchNegative(i16) = 0x9B, // branch if value < 0
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BranchNonNegative(i16) = 0x9C, // branch if value <= 0
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BranchPositive(i16) = 0x9D, // branch if value > 0
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BranchNonPositive(i16) = 0x9E, // branch if value >= 0
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BranchIntEquality(i16) = 0x9F,
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BranchIntInequality(i16) = 0xA0,
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BranchIntLessThan(i16) = 0xA1,
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BranchIntGreaterEquals(i16) = 0xA2,
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BranchIntGreaterThan(i16) = 0xA3,
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BranchIntLessEquals(i16) = 0xA4,
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BranchIntEquality(i16) = 0x9F,
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BranchIntInequality(i16) = 0xA0,
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BranchIntLessThan(i16) = 0xA1,
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BranchIntGreaterEquals(i16) = 0xA2,
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BranchIntGreaterThan(i16) = 0xA3,
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BranchIntLessEquals(i16) = 0xA4,
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BranchReferenceEquality(i16) = 0xA5,
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BranchReferenceInequality(i16) = 0xA6,
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BranchAlways(i16) = 0xA7, // branch if true
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ReturnInt() = 0xAC, // return integer from function
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BranchAlways(i16) = 0xA7, // branch if true
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ReturnInt() = 0xAC, // return integer from function
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ReturnReference() = 0xB0, // return top-ref from current function
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ReturnVoid() = 0xB1, // return void from function
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GetStatic(u16) = 0xB2, // get static field from class
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PutStatic(u16) = 0xB3, // set static field on class
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GetField(u16) = 0xB4, // get field from class
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PutField(u16) = 0xB5, // set field to a value
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InvokeVirtual(u16) = 0xB6, // invoke function on a class
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InvokeSpecial(u16) = 0xB7, // invoke instance method
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InvokeStatic(u16) = 0xB8, // invoke static function
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InvokeDynamic(u16, u16) = 0xBA, // invoke dynamic function
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NewObject(u16) = 0xBB, // Create a new object from a constant-pool class reference
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NewPrimitiveArray(u8) = 0xBC, // make a primitive array
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NewArray(u16) = 0xBD, // Create a new array from a constant-pool component class reference
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ArrayLength() = 0xBE, // Get length from array reference
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ReturnReference() = 0xB0, // return top-ref from current function
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ReturnVoid() = 0xB1, // return void from function
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GetStatic(u16) = 0xB2, // get static field from class
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PutStatic(u16) = 0xB3, // set static field on class
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GetField(u16) = 0xB4, // get field from class
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PutField(u16) = 0xB5, // set field to a value
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InvokeVirtual(u16) = 0xB6, // invoke function on a class
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InvokeSpecial(u16) = 0xB7, // invoke instance method
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InvokeStatic(u16) = 0xB8, // invoke static function
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InvokeDynamic(u16, u16) = 0xBA, // invoke dynamic function
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NewObject(u16) = 0xBB, // Create a new object from a constant-pool class reference
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NewPrimitiveArray(u8) = 0xBC, // make a primitive array
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NewArray(u16) = 0xBD, // Create a new array from a constant-pool component class reference
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ArrayLength() = 0xBE, // Get length from array reference
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EnterMonitor() = 0xC2, // enter the synchronization monitor of an object
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ExitMonitor() = 0xC3, // exit the synchronization monitor of an object
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BranchNull(i16) = 0xC6, // branch if Null
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BranchNonNull(i16) = 0xC7, // branch if Null
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InstanceOf(u16) = 0xC1, // branch if Null
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EnterMonitor() = 0xC2, // enter the synchronization monitor of an object
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ExitMonitor() = 0xC3, // exit the synchronization monitor of an object
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BranchNull(i16) = 0xC6, // branch if Null
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BranchNonNull(i16) = 0xC7, // branch if Null
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Unknown(u8),
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}
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