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Improved function names

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This commit is contained in:
Eduard Urbach 2024-06-25 23:37:14 +02:00
parent 37e222e022
commit 871ebc147f
Signed by: eduard
GPG key ID: 49226B848C78F6C8
19 changed files with 94 additions and 114 deletions
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37
src/build/arch/x64/Add.go
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@ -4,39 +4,12 @@ import (
"git.akyoto.dev/cli/q/src/build/cpu"
)
// AddRegNum adds a number to the given register.
func AddRegNum(code []byte, destination cpu.Register, number int) []byte {
return numRegReg(code, 0, byte(destination), number, 0x83, 0x81)
// AddRegisterNumber adds a number to the given register.
func AddRegisterNumber(code []byte, destination cpu.Register, number int) []byte {
return regRegNum(code, 0, byte(destination), number, 0x83, 0x81)
}
// AddRegReg adds a number to the given register.
func AddRegReg(code []byte, destination cpu.Register, operand cpu.Register) []byte {
// AddRegisterRegister adds a register value into another register.
func AddRegisterRegister(code []byte, destination cpu.Register, operand cpu.Register) []byte {
return regReg(code, byte(operand), byte(destination), 0x01)
}
func regReg(code []byte, reg byte, rm byte, opCodes ...byte) []byte {
w := byte(1) // Indicates a 64-bit register.
r := byte(0) // Extension to the "reg" field in ModRM.
x := byte(0) // Extension to the SIB index field.
b := byte(0) // Extension to the "rm" field in ModRM or the SIB base (r8 up to r15 use this).
mod := byte(0b11) // Direct addressing mode, no register offsets.
if reg > 0b111 {
r = 1
reg &= 0b111
}
if rm > 0b111 {
b = 1
rm &= 0b111
}
rex := REX(w, r, x, b)
modRM := ModRM(mod, reg, rm)
code = append(code, rex)
code = append(code, opCodes...)
code = append(code, modRM)
return code
}