65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
package asm
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import "git.akyoto.dev/cli/q/src/build/cpu"
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// RegisterNumber adds an instruction with a register and a number.
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func (a *Assembler) RegisterNumber(mnemonic Mnemonic, reg cpu.Register, number int) {
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a.Instructions = append(a.Instructions, Instruction{
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Mnemonic: mnemonic,
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Data: &RegisterNumber{
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Register: reg,
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Number: number,
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},
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})
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}
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// MoveRegisterRegister moves a register value into another register.
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func (a *Assembler) MoveRegisterRegister(destination cpu.Register, source cpu.Register) {
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a.Instructions = append(a.Instructions, Instruction{
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Mnemonic: MOVE,
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Data: &RegisterRegister{
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Destination: destination,
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Source: source,
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},
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})
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}
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// Label adds a label at the current position.
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func (a *Assembler) Label(name string) {
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a.Instructions = append(a.Instructions, Instruction{
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Mnemonic: LABEL,
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Data: &Label{
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Name: name,
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},
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})
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}
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// Call calls a function whose position is identified by a label.
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func (a *Assembler) Call(name string) {
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a.Instructions = append(a.Instructions, Instruction{
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Mnemonic: CALL,
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Data: &Label{
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Name: name,
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},
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})
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}
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// Jump jumps to a position that is identified by a label.
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func (a *Assembler) Jump(name string) {
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a.Instructions = append(a.Instructions, Instruction{
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Mnemonic: JUMP,
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Data: &Label{
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Name: name,
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},
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})
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}
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// Return returns back to the caller.
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func (a *Assembler) Return() {
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a.Instructions = append(a.Instructions, Instruction{Mnemonic: RETURN})
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}
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// Syscall executes a kernel function.
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func (a *Assembler) Syscall() {
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a.Instructions = append(a.Instructions, Instruction{Mnemonic: SYSCALL})
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}
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