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🌱 A minimal programming language and compiler. git.urbach.dev/cli/q
high-performance programming-language compiler
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import ( "testing"
"git.urbach.dev/cli/q/src/arm" "git.urbach.dev/cli/q/src/cpu" "git.urbach.dev/go/assert")
func TestStoreRegister(t *testing.T) { usagePatterns := []struct { Source cpu.Register Base cpu.Register Offset cpu.Register Scale arm.Scale Length byte Code uint32 }{ {arm.X0, arm.X1, arm.X2, arm.Scale1, 8, 0xF8226820}, {arm.X0, arm.X1, arm.X2, arm.Scale1, 4, 0xB8226820}, {arm.X0, arm.X1, arm.X2, arm.Scale1, 2, 0x78226820}, {arm.X0, arm.X1, arm.X2, arm.Scale1, 1, 0x38226820}, {arm.X0, arm.X1, arm.X2, arm.ScaleLength, 8, 0xF8227820}, }
for _, pattern := range usagePatterns { t.Logf("str %s, [%s, #%s] %db", pattern.Source, pattern.Base, pattern.Offset, pattern.Length) code := arm.StoreRegister(pattern.Source, pattern.Base, pattern.Offset, pattern.Scale, pattern.Length) assert.Equal(t, code, pattern.Code) }}
func TestStoreFixedOffsetRegister(t *testing.T) { usagePatterns := []struct { Source cpu.Register Base cpu.Register Mode arm.AddressMode Offset int Length byte Code uint32 }{ {arm.X1, arm.X0, arm.UnscaledImmediate, 0, 8, 0xF8000001}, {arm.X0, arm.X1, arm.UnscaledImmediate, 0, 8, 0xF8000020},
{arm.X0, arm.X1, arm.UnscaledImmediate, -8, 1, 0x381F8020}, {arm.X1, arm.X0, arm.UnscaledImmediate, -8, 1, 0x381F8001}, {arm.X0, arm.X1, arm.UnscaledImmediate, -8, 2, 0x781F8020}, {arm.X1, arm.X0, arm.UnscaledImmediate, -8, 2, 0x781F8001}, {arm.X0, arm.X1, arm.UnscaledImmediate, -8, 4, 0xB81F8020}, {arm.X1, arm.X0, arm.UnscaledImmediate, -8, 4, 0xB81F8001}, {arm.X0, arm.X1, arm.UnscaledImmediate, -8, 8, 0xF81F8020}, {arm.X1, arm.X0, arm.UnscaledImmediate, -8, 8, 0xF81F8001},
{arm.X0, arm.SP, arm.PreIndex, -16, 8, 0xF81F0FE0}, {arm.X1, arm.SP, arm.PreIndex, -16, 8, 0xF81F0FE1}, {arm.X2, arm.SP, arm.PreIndex, -16, 8, 0xF81F0FE2}, }
for _, pattern := range usagePatterns { t.Logf("stur %s, [%s, #%d] %db", pattern.Source, pattern.Base, pattern.Offset, pattern.Length) code := arm.StoreFixedOffsetRegister(pattern.Source, pattern.Base, pattern.Mode, pattern.Offset, pattern.Length) assert.Equal(t, code, pattern.Code) }}
func TestStoreFixedOffsetRegisterScaled(t *testing.T) { usagePatterns := []struct { Source cpu.Register Base cpu.Register Mode arm.AddressMode Offset uint Length byte Code uint32 }{ {arm.X1, arm.X0, arm.UnscaledImmediate, 0, 8, 0xF9000001}, {arm.X1, arm.X0, arm.UnscaledImmediate, 1, 8, 0xF9000401}, {arm.X1, arm.X0, arm.UnscaledImmediate, 4095, 8, 0xF93FFC01}, }
for _, pattern := range usagePatterns { t.Logf("str %s, [%s, #%d] %db", pattern.Source, pattern.Base, pattern.Offset*uint(pattern.Length), pattern.Length) code := arm.StoreFixedOffsetRegisterScaled(pattern.Source, pattern.Base, pattern.Mode, pattern.Offset, pattern.Length) assert.Equal(t, code, pattern.Code) }}