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118 lines
2.3 KiB
118 lines
2.3 KiB
package x86_64
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import (
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`sync`
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)
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var (
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labelPool sync.Pool
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programPool sync.Pool
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instructionPool sync.Pool
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memoryOperandPool sync.Pool
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)
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func freeLabel(v *Label) {
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labelPool.Put(v)
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}
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func clearLabel(p *Label) *Label {
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*p = Label{}
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return p
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}
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// CreateLabel creates a new Label, it may allocate a new one or grab one from a pool.
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func CreateLabel(name string) *Label {
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var p *Label
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var v interface{}
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/* attempt to grab from the pool */
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if v = labelPool.Get(); v == nil {
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p = new(Label)
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} else {
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p = clearLabel(v.(*Label))
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}
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/* initialize the label */
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p.refs = 1
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p.Name = name
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return p
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}
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func newProgram(arch *Arch) *Program {
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var p *Program
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var v interface{}
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/* attempt to grab from the pool */
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if v = programPool.Get(); v == nil {
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p = new(Program)
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} else {
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p = clearProgram(v.(*Program))
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}
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/* initialize the program */
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p.arch = arch
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return p
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}
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func freeProgram(p *Program) {
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programPool.Put(p)
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}
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func clearProgram(p *Program) *Program {
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*p = Program{}
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return p
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}
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func newInstruction(name string, argc int, argv Operands) *Instruction {
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var v interface{}
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var p *Instruction
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/* attempt to grab from the pool */
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if v = instructionPool.Get(); v == nil {
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p = new(Instruction)
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} else {
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p = clearInstruction(v.(*Instruction))
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}
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/* initialize the instruction */
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p.name = name
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p.argc = argc
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p.argv = argv
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return p
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}
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func freeInstruction(v *Instruction) {
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instructionPool.Put(v)
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}
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func clearInstruction(p *Instruction) *Instruction {
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*p = Instruction { prefix: p.prefix[:0] }
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return p
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}
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func freeMemoryOperand(m *MemoryOperand) {
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memoryOperandPool.Put(m)
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}
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func clearMemoryOperand(m *MemoryOperand) *MemoryOperand {
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*m = MemoryOperand{}
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return m
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}
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// CreateMemoryOperand creates a new MemoryOperand, it may allocate a new one or grab one from a pool.
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func CreateMemoryOperand() *MemoryOperand {
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var v interface{}
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var p *MemoryOperand
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/* attempt to grab from the pool */
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if v = memoryOperandPool.Get(); v == nil {
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p = new(MemoryOperand)
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} else {
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p = clearMemoryOperand(v.(*MemoryOperand))
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}
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/* initialize the memory operand */
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p.refs = 1
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return p
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}
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