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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 TestLoadAddress(t *testing.T) { usagePatterns := []struct { Destination cpu.Register Offset int Code []byte }{ {x86.R0, 0, []byte{0x48, 0x8D, 0x05, 0x00, 0x00, 0x00, 0x00}}, {x86.R1, 0, []byte{0x48, 0x8D, 0x0D, 0x00, 0x00, 0x00, 0x00}}, {x86.R2, 0, []byte{0x48, 0x8D, 0x15, 0x00, 0x00, 0x00, 0x00}}, {x86.R3, 0, []byte{0x48, 0x8D, 0x1D, 0x00, 0x00, 0x00, 0x00}}, {x86.SP, 0, []byte{0x48, 0x8D, 0x25, 0x00, 0x00, 0x00, 0x00}}, {x86.R5, 0, []byte{0x48, 0x8D, 0x2D, 0x00, 0x00, 0x00, 0x00}}, {x86.R6, 0, []byte{0x48, 0x8D, 0x35, 0x00, 0x00, 0x00, 0x00}}, {x86.R7, 0, []byte{0x48, 0x8D, 0x3D, 0x00, 0x00, 0x00, 0x00}}, {x86.R8, 0, []byte{0x4C, 0x8D, 0x05, 0x00, 0x00, 0x00, 0x00}}, {x86.R9, 0, []byte{0x4C, 0x8D, 0x0D, 0x00, 0x00, 0x00, 0x00}}, {x86.R10, 0, []byte{0x4C, 0x8D, 0x15, 0x00, 0x00, 0x00, 0x00}}, {x86.R11, 0, []byte{0x4C, 0x8D, 0x1D, 0x00, 0x00, 0x00, 0x00}}, {x86.R12, 0, []byte{0x4C, 0x8D, 0x25, 0x00, 0x00, 0x00, 0x00}}, {x86.R13, 0, []byte{0x4C, 0x8D, 0x2D, 0x00, 0x00, 0x00, 0x00}}, {x86.R14, 0, []byte{0x4C, 0x8D, 0x35, 0x00, 0x00, 0x00, 0x00}}, {x86.R15, 0, []byte{0x4C, 0x8D, 0x3D, 0x00, 0x00, 0x00, 0x00}}, }
for _, pattern := range usagePatterns { t.Logf("lea %s, [rip+%d]", pattern.Destination, pattern.Offset) code := x86.LoadAddress(nil, pattern.Destination, pattern.Offset) assert.DeepEqual(t, code, pattern.Code) }}
func TestLoadAddressAbs(t *testing.T) { usagePatterns := []struct { Destination cpu.Register Offset int Code []byte }{ {x86.R0, 0x00, []byte{0x48, 0x8D, 0x04, 0x25, 0x00, 0x00, 0x00, 0x00}}, {x86.R0, 0x08, []byte{0x48, 0x8D, 0x04, 0x25, 0x08, 0x00, 0x00, 0x00}}, {x86.R0, 0x10, []byte{0x48, 0x8D, 0x04, 0x25, 0x10, 0x00, 0x00, 0x00}}, {x86.R1, 0x00, []byte{0x48, 0x8D, 0x0C, 0x25, 0x00, 0x00, 0x00, 0x00}}, {x86.R1, 0x08, []byte{0x48, 0x8D, 0x0C, 0x25, 0x08, 0x00, 0x00, 0x00}}, {x86.R1, 0x10, []byte{0x48, 0x8D, 0x0C, 0x25, 0x10, 0x00, 0x00, 0x00}}, }
for _, pattern := range usagePatterns { t.Logf("lea %s, [%d]", pattern.Destination, pattern.Offset) code := x86.LoadAddressAbs(nil, pattern.Destination, pattern.Offset) assert.DeepEqual(t, code, pattern.Code) }}