18cdf50d7c
Adds methods for referencing sub- or super-registers. For example, for general purpose registers you can now reference As8(), As16(), ... and for vector AsX(), AsY(), AsZ(). Closes #1
138 lines
2.9 KiB
Go
138 lines
2.9 KiB
Go
package reg
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import "testing"
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func TestSpecBytes(t *testing.T) {
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cases := []struct {
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Spec Spec
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Bytes uint
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}{
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{S0, 0},
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{S8L, 1},
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{S8H, 1},
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{S16, 2},
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{S32, 4},
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{S64, 8},
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{S128, 16},
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{S256, 32},
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{S512, 64},
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}
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for _, c := range cases {
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if c.Spec.Bytes() != c.Bytes {
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t.Errorf("%v.Bytes() = %d; expect = %d", c.Spec, c.Spec.Bytes(), c.Bytes)
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}
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}
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}
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func TestToVirtual(t *testing.T) {
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v := GeneralPurpose.Virtual(42, B32)
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if ToVirtual(v) != v {
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t.Errorf("ToVirtual(v) != v for virtual register")
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}
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if ToVirtual(ECX) != nil {
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t.Errorf("ToVirtual should be nil for physical registers")
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}
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}
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func TestToPhysical(t *testing.T) {
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v := GeneralPurpose.Virtual(42, B32)
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if ToPhysical(v) != nil {
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t.Errorf("ToPhysical should be nil for virtual registers")
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}
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if ToPhysical(ECX) != ECX {
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t.Errorf("ToPhysical(p) != p for physical register")
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}
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}
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func TestAreConflicting(t *testing.T) {
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cases := []struct {
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X, Y Physical
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Expect bool
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}{
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{ECX, X3, false},
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{AL, AH, false},
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{AL, AX, true},
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{AL, BX, false},
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{X3, Y4, false},
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{X3, Y3, true},
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{Y3, Z4, false},
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{Y3, Z3, true},
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}
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for _, c := range cases {
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if AreConflicting(c.X, c.Y) != c.Expect {
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t.Errorf("AreConflicting(%s, %s) != %v", c.X, c.Y, c.Expect)
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}
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}
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}
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func TestFamilyLookup(t *testing.T) {
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cases := []struct {
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Family *Family
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ID PID
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Spec Spec
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Expect Physical
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}{
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{GeneralPurpose, 0, S8, AL},
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{GeneralPurpose, 1, S8L, CL},
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{GeneralPurpose, 2, S8H, DH},
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{GeneralPurpose, 3, S16, BX},
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{GeneralPurpose, 9, S32, R9L},
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{GeneralPurpose, 13, S64, R13},
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{GeneralPurpose, 13, S512, nil},
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{GeneralPurpose, 133, S64, nil},
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{Vector, 1, S128, X1},
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{Vector, 13, S256, Y13},
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{Vector, 27, S512, Z27},
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{Vector, 1, S16, nil},
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{Vector, 299, S256, nil},
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}
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for _, c := range cases {
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got := c.Family.Lookup(c.ID, c.Spec)
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if got != c.Expect {
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t.Errorf("pid=%v spec=%v: lookup got %v expect %v", c.ID, c.Spec, got, c.Expect)
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}
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}
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}
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func TestPhysicalAs(t *testing.T) {
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cases := []struct {
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Register Physical
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Spec Spec
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Expect Physical
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}{
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{DX, S8L, DL},
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{DX, S8H, DH},
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{DX, S8, DL},
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{DX, S16, DX},
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{DX, S32, EDX},
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{DX, S64, RDX},
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{DX, S256, nil},
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}
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for _, c := range cases {
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got := c.Register.as(c.Spec)
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if got != c.Expect {
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t.Errorf("%s.as(%v) = %v; expect %v", c.Register.Asm(), c.Spec, got, c.Expect)
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}
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}
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}
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func TestVirtualAs(t *testing.T) {
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cases := []struct {
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Virtual Register
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Physical Physical
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Match bool
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}{
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{GeneralPurpose.Virtual(0, B8), CL, true},
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{GeneralPurpose.Virtual(0, B8), CH, true},
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{GeneralPurpose.Virtual(0, B32).as(S8L), CL, true},
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{GeneralPurpose.Virtual(0, B32).as(S8L), CH, false},
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{GeneralPurpose.Virtual(0, B16).as(S32), R9L, true},
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{GeneralPurpose.Virtual(0, B16).as(S32), R9, false},
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}
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for _, c := range cases {
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if c.Virtual.(Virtual).SatisfiedBy(c.Physical) != c.Match {
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t.Errorf("%s.SatisfiedBy(%v) != %v", c.Virtual.Asm(), c.Physical, c.Match)
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}
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}
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}
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