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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/cpu" "git.urbach.dev/cli/q/src/x86" "git.urbach.dev/go/assert")
func TestCall(t *testing.T) { assert.DeepEqual(t, x86.Call(nil, 1), []byte{0xE8, 0x01, 0x00, 0x00, 0x00}) assert.DeepEqual(t, x86.CallAt(nil, 1), []byte{0xFF, 0x15, 0x01, 0x00, 0x00, 0x00})}
func TestCallRegister(t *testing.T) { usagePatterns := []struct { Register cpu.Register Code []byte }{ {x86.R0, []byte{0xFF, 0xD0}}, {x86.R1, []byte{0xFF, 0xD1}}, {x86.R2, []byte{0xFF, 0xD2}}, {x86.R3, []byte{0xFF, 0xD3}}, {x86.SP, []byte{0xFF, 0xD4}}, {x86.R5, []byte{0xFF, 0xD5}}, {x86.R6, []byte{0xFF, 0xD6}}, {x86.R7, []byte{0xFF, 0xD7}}, {x86.R8, []byte{0x41, 0xFF, 0xD0}}, {x86.R9, []byte{0x41, 0xFF, 0xD1}}, {x86.R10, []byte{0x41, 0xFF, 0xD2}}, {x86.R11, []byte{0x41, 0xFF, 0xD3}}, {x86.R12, []byte{0x41, 0xFF, 0xD4}}, {x86.R13, []byte{0x41, 0xFF, 0xD5}}, {x86.R14, []byte{0x41, 0xFF, 0xD6}}, {x86.R15, []byte{0x41, 0xFF, 0xD7}}, }
for _, pattern := range usagePatterns { t.Logf("call %s", pattern.Register) code := x86.CallRegister(nil, pattern.Register) assert.DeepEqual(t, code, pattern.Code) }}
func TestCallAtMemory(t *testing.T) { usagePatterns := []struct { Register cpu.Register Offset int32 Code []byte }{ {x86.R0, 0, []byte{0xFF, 0x10}}, {x86.R1, 0, []byte{0xFF, 0x11}}, {x86.R2, 0, []byte{0xFF, 0x12}}, {x86.R3, 0, []byte{0xFF, 0x13}}, {x86.SP, 0, []byte{0xFF, 0x14, 0x24}}, {x86.R5, 0, []byte{0xFF, 0x55, 0x00}}, {x86.R6, 0, []byte{0xFF, 0x16}}, {x86.R7, 0, []byte{0xFF, 0x17}}, {x86.R8, 0, []byte{0x41, 0xFF, 0x10}}, {x86.R9, 0, []byte{0x41, 0xFF, 0x11}}, {x86.R10, 0, []byte{0x41, 0xFF, 0x12}}, {x86.R11, 0, []byte{0x41, 0xFF, 0x13}}, {x86.R12, 0, []byte{0x41, 0xFF, 0x14, 0x24}}, {x86.R13, 0, []byte{0x41, 0xFF, 0x55, 0x00}}, {x86.R14, 0, []byte{0x41, 0xFF, 0x16}}, {x86.R15, 0, []byte{0x41, 0xFF, 0x17}},
{x86.R0, 1, []byte{0xFF, 0x50, 0x01}}, {x86.R1, 1, []byte{0xFF, 0x51, 0x01}}, {x86.R2, 1, []byte{0xFF, 0x52, 0x01}}, {x86.R3, 1, []byte{0xFF, 0x53, 0x01}}, {x86.SP, 1, []byte{0xFF, 0x54, 0x24, 0x01}}, {x86.R5, 1, []byte{0xFF, 0x55, 0x01}}, {x86.R6, 1, []byte{0xFF, 0x56, 0x01}}, {x86.R7, 1, []byte{0xFF, 0x57, 0x01}}, {x86.R8, 1, []byte{0x41, 0xFF, 0x50, 0x01}}, {x86.R9, 1, []byte{0x41, 0xFF, 0x51, 0x01}}, {x86.R10, 1, []byte{0x41, 0xFF, 0x52, 0x01}}, {x86.R11, 1, []byte{0x41, 0xFF, 0x53, 0x01}}, {x86.R12, 1, []byte{0x41, 0xFF, 0x54, 0x24, 0x01}}, {x86.R13, 1, []byte{0x41, 0xFF, 0x55, 0x01}}, {x86.R14, 1, []byte{0x41, 0xFF, 0x56, 0x01}}, {x86.R15, 1, []byte{0x41, 0xFF, 0x57, 0x01}}, }
for _, pattern := range usagePatterns { t.Logf("call [%s+%d]", pattern.Register, pattern.Offset) code := x86.CallAtMemory(nil, pattern.Register, pattern.Offset) assert.DeepEqual(t, code, pattern.Code) }}