54 lines
1.7 KiB
Go
54 lines
1.7 KiB
Go
package asmc
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import (
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"math"
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"git.akyoto.dev/cli/q/src/asm"
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"git.akyoto.dev/cli/q/src/config"
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"git.akyoto.dev/cli/q/src/x86"
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)
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func (c *compiler) store(x asm.Instruction) {
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switch operands := x.Data.(type) {
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case *asm.MemoryNumber:
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if operands.Address.OffsetRegister == math.MaxUint8 {
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c.code = x86.StoreNumber(c.code, operands.Address.Base, operands.Address.Offset, operands.Address.Length, operands.Number)
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} else {
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c.code = x86.StoreDynamicNumber(c.code, operands.Address.Base, operands.Address.OffsetRegister, operands.Address.Length, operands.Number)
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}
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case *asm.MemoryLabel:
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start := len(c.code)
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if operands.Address.OffsetRegister == math.MaxUint8 {
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c.code = x86.StoreNumber(c.code, operands.Address.Base, operands.Address.Offset, operands.Address.Length, 0b00_00_00_00)
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} else {
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c.code = x86.StoreDynamicNumber(c.code, operands.Address.Base, operands.Address.OffsetRegister, operands.Address.Length, 0b00_00_00_00)
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}
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size := 4
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opSize := len(c.code) - size - start
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memLabel := x.Data.(*asm.MemoryLabel)
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c.codePointers = append(c.codePointers, &pointer{
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Position: Address(len(c.code) - size),
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OpSize: uint8(opSize),
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Size: uint8(size),
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Resolve: func() Address {
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destination, exists := c.codeLabels[memLabel.Label]
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if !exists {
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panic("unknown label")
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}
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return config.BaseAddress + c.codeStart + destination
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},
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})
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case *asm.MemoryRegister:
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if operands.Address.OffsetRegister == math.MaxUint8 {
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c.code = x86.StoreRegister(c.code, operands.Address.Base, operands.Address.Offset, operands.Address.Length, operands.Register)
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} else {
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c.code = x86.StoreDynamicRegister(c.code, operands.Address.Base, operands.Address.OffsetRegister, operands.Address.Length, operands.Register)
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}
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}
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}
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