cli/q
Code Issues 1 Pull Requests Activity

Implemented more arm64 instructions

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This commit is contained in:
Eduard Urbach
2025-03-13 13:17:58 +01:00
parent dc664dbf5a
commit 5a5061c5d7
23 changed files with 290 additions and 53 deletions
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19
src/arm/Load.go
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@ -3,11 +3,20 @@ package arm
import "git.urbach.dev/cli/q/src/cpu"
// LoadRegister loads from memory into a register.
func LoadRegister(destination cpu.Register, base cpu.Register, offset int16, length byte) uint32 {
if offset < 0 {
offset &= 0xFF
offset |= 1 << 8
func LoadRegister(destination cpu.Register, base cpu.Register, offset int, length byte) uint32 {
offset &= 0b1_1111_1111
common := 1<<22 | uint32(offset)<<12 | uint32(base)<<5 | uint32(destination)
switch length {
case 1:
return 0b00111<<27 | common
case 2:
return 0b01111<<27 | common
case 4:
return 0b10111<<27 | common
case 8:
return 0b11111<<27 | common
}
return 0b11111000010<<21 | uint32(offset)<<12 | uint32(base)<<5 | uint32(destination)
panic("invalid length")
}