19 lines
568 B
Go
19 lines
568 B
Go
package x86
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import (
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"encoding/binary"
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"git.urbach.dev/cli/q/src/cpu"
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"git.urbach.dev/cli/q/src/sizeof"
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)
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// encodeNum encodes an instruction with up to two registers and a number parameter.
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func encodeNum(code []byte, mod AddressMode, reg cpu.Register, rm cpu.Register, number int, opCode8 byte, opCode32 byte) []byte {
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if sizeof.Signed(int64(number)) == 1 {
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code = encode(code, mod, reg, rm, 8, opCode8)
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return append(code, byte(number))
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}
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code = encode(code, mod, reg, rm, 8, opCode32)
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return binary.LittleEndian.AppendUint32(code, uint32(number))
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}
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