33 lines
697 B
Go
33 lines
697 B
Go
package core
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import (
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"slices"
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"git.urbach.dev/cli/q/src/asm"
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"git.urbach.dev/cli/q/src/cpu"
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)
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// CallSafe pushes used registers to the stack, executes the call and restores the original register value.
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func (f *Function) CallSafe(fn *Function, registers []cpu.Register) {
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for _, register := range f.CPU.Output {
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f.SaveRegister(register)
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}
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for _, register := range f.CPU.General {
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if f.RegisterIsUsed(register) {
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f.Register(asm.PUSH, register)
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}
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}
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f.Call(fn.UniqueName)
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for _, register := range slices.Backward(f.CPU.General) {
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if f.RegisterIsUsed(register) {
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f.Register(asm.POP, register)
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}
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}
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for _, register := range registers {
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f.FreeRegister(register)
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}
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}
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