63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
package core
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import (
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"git.urbach.dev/cli/q/src/asm"
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"git.urbach.dev/cli/q/src/config"
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"git.urbach.dev/cli/q/src/cpu"
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"git.urbach.dev/cli/q/src/errors"
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"git.urbach.dev/cli/q/src/token"
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"git.urbach.dev/cli/q/src/x86"
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)
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// ExecuteRegisterRegister performs an operation on two registers.
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func (f *Function) ExecuteRegisterRegister(operation token.Token, register cpu.Register, operand cpu.Register) error {
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if !operation.IsAssignment() && !operation.IsComparison() {
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f.SaveRegister(register)
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}
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switch operation.Kind {
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case token.Add, token.AddAssign:
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f.RegisterRegister(asm.ADD, register, operand)
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case token.Sub, token.SubAssign:
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f.RegisterRegister(asm.SUB, register, operand)
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case token.Mul, token.MulAssign:
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f.RegisterRegister(asm.MUL, register, operand)
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case token.Div, token.DivAssign:
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if config.TargetArch == config.X86 {
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f.SaveRegister(x86.RDX)
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}
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f.RegisterRegister(asm.DIV, register, operand)
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case token.Mod, token.ModAssign:
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if config.TargetArch == config.X86 {
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f.SaveRegister(x86.RDX)
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}
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f.RegisterRegister(asm.MODULO, register, operand)
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case token.And, token.AndAssign:
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f.RegisterRegister(asm.AND, register, operand)
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case token.Or, token.OrAssign:
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f.RegisterRegister(asm.OR, register, operand)
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case token.Xor, token.XorAssign:
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f.RegisterRegister(asm.XOR, register, operand)
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case token.Assign:
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f.RegisterRegister(asm.MOVE, register, operand)
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case token.Equal, token.NotEqual, token.Less, token.LessEqual, token.Greater, token.GreaterEqual:
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f.RegisterRegister(asm.COMPARE, register, operand)
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default:
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return errors.New(&errors.InvalidOperator{Operator: operation.Text(f.File.Bytes)}, f.File, operation.Position)
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}
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return nil
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}
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