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This commit is contained in:
Eduard Urbach 2024-07-13 00:13:13 +02:00
parent ff0b8ecb10
commit 1b75529bb3
Signed by: eduard
GPG key ID: 49226B848C78F6C8
18 changed files with 428 additions and 327 deletions
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43
src/build/asm/divide.go Normal file
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package asm
import "git.akyoto.dev/cli/q/src/build/arch/x64"
// divide implements the division on x64 machines.
func divide(code []byte, data any) []byte {
code = x64.PushRegister(code, x64.RDX)
switch operands := data.(type) {
case *RegisterNumber:
if operands.Register == x64.RAX {
code = x64.PushRegister(code, x64.RCX)
code = x64.MoveRegisterNumber32(code, x64.RCX, uint32(operands.Number))
code = x64.ExtendRAXToRDX(code)
code = x64.DivRegister(code, x64.RCX)
code = x64.PopRegister(code, x64.RCX)
} else {
code = x64.PushRegister(code, x64.RAX)
code = x64.MoveRegisterRegister64(code, x64.RAX, operands.Register)
code = x64.MoveRegisterNumber32(code, operands.Register, uint32(operands.Number))
code = x64.ExtendRAXToRDX(code)
code = x64.DivRegister(code, operands.Register)
code = x64.MoveRegisterRegister64(code, operands.Register, x64.RAX)
code = x64.PopRegister(code, x64.RAX)
}
case *RegisterRegister:
if operands.Destination == x64.RAX {
code = x64.ExtendRAXToRDX(code)
code = x64.DivRegister(code, operands.Source)
} else {
code = x64.PushRegister(code, x64.RAX)
code = x64.MoveRegisterRegister64(code, x64.RAX, operands.Destination)
code = x64.ExtendRAXToRDX(code)
code = x64.DivRegister(code, operands.Source)
code = x64.MoveRegisterRegister64(code, operands.Destination, x64.RAX)
code = x64.PopRegister(code, x64.RAX)
}
}
code = x64.PopRegister(code, x64.RDX)
return code
}