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authorDimitri Sokolyuk <demon@dim13.org>2017-06-05 21:05:47 +0200
committerDimitri Sokolyuk <demon@dim13.org>2017-06-05 21:05:47 +0200
commitc25de36d647a6bc31a8c8b78a983f86eb25dad94 (patch)
treeba9692a46abe6bd5275228acf36cd53e2fc0be1d
parentdbb11cdcde7d90cab20cc552218e1811781a92ae (diff)
Still broken
-rw-r--r--eval.go43
-rw-r--r--eval_test.go110
2 files changed, 107 insertions, 46 deletions
diff --git a/eval.go b/eval.go
index 43ec195..d68268e 100644
--- a/eval.go
+++ b/eval.go
@@ -60,17 +60,17 @@ func (vm *J1) eval(ins Instruction) {
next := vm.pc + 1
switch v := ins.(type) {
case Lit:
- vm.st0 = uint16(v)
vm.dstack[vm.dsp] = vm.st0
vm.dsp++
+ vm.st0 = uint16(v)
case Jump:
next = uint16(v)
case Cond:
if vm.st0 == 0 {
next = uint16(v)
}
- vm.st0 = vm.dstack[vm.dsp]
vm.dsp--
+ vm.st0 = vm.dstack[vm.dsp]
case Call:
vm.rstack[vm.rsp] = next
vm.rsp++
@@ -83,22 +83,45 @@ func (vm *J1) eval(ins Instruction) {
vm.memory[vm.st0] = vm.dstack[vm.dsp]
}
- vm.st0 = vm.newST0(v)
+ newSt0 := vm.newST0(v)
- vm.dsp = uint16(int8(vm.dsp) + v.Ddir)
- vm.rsp = uint16(int8(vm.rsp) + v.Rdir)
- if v.TtoR {
- vm.rstack[vm.rsp] = vm.st0
- }
if v.TtoN {
- vm.dstack[vm.dsp] = vm.st0
+ switch v.Ddir {
+ case 1:
+ vm.dstack[vm.dsp] = vm.st0
+ vm.dsp++
+ case -1:
+ vm.dsp--
+ vm.dstack[vm.dsp] = vm.st0
+ default:
+ vm.dstack[vm.dsp] = vm.st0
+ }
}
+
+ if v.TtoR {
+ switch v.Rdir {
+ case 1:
+ vm.rstack[vm.rsp] = vm.st0
+ vm.rsp++
+ case -1:
+ vm.rsp--
+ vm.rstack[vm.rsp] = vm.st0
+ default:
+ vm.rstack[vm.rsp] = vm.st0
+ }
+ }
+
+ vm.st0 = newSt0
+ //vm.dsp = uint16(int8(vm.dsp) + v.Ddir)
+ //vm.rsp = uint16(int8(vm.rsp) + v.Rdir)
+ //if v.TtoR { vm.rstack[vm.rsp] = vm.st0 }
+ //if v.TtoN { vm.dstack[vm.dsp] = vm.st0 }
}
vm.pc = next
}
func (vm *J1) newST0(v ALU) uint16 {
- T, N, R := vm.st0, vm.dstack[vm.dsp], vm.rstack[vm.rsp]
+ T, N, R := vm.st0, vm.dstack[(vm.dsp-1)%32], vm.rstack[(vm.rsp-1)%32]
switch v.Opcode {
case 0: // T
return T
diff --git a/eval_test.go b/eval_test.go
index 5e62686..c4f81a0 100644
--- a/eval_test.go
+++ b/eval_test.go
@@ -7,45 +7,85 @@ import (
func TestEval(t *testing.T) {
testCases := []struct {
- begin, end J1
- ins Instruction
+ ins []Instruction
+ end J1
}{
- {ins: ALU{}, begin: J1{}, end: J1{pc: 1}},
- {ins: Jump(0xff), begin: J1{}, end: J1{pc: 0xff}},
- {ins: Cond(0xff), begin: J1{st0: 1, dsp: 1}, end: J1{pc: 1}},
- {ins: Cond(0xff), begin: J1{st0: 0, dsp: 1}, end: J1{pc: 0xff}},
- {ins: Call(0xff), begin: J1{}, end: J1{pc: 0xff, rstack: [32]uint16{1}, rsp: 1}},
- {ins: Lit(0xff), begin: J1{}, end: J1{pc: 1, st0: 0xff, dstack: [32]uint16{0xff}, dsp: 1}},
- {ins: Lit(0xfe),
- begin: J1{pc: 1, st0: 0xff, dstack: [32]uint16{0xff}, dsp: 1},
- end: J1{pc: 2, st0: 0xfe, dstack: [32]uint16{0xff, 0xfe}, dsp: 2}},
- {ins: ALU{Opcode: 0, TtoN: true, Ddir: 1}, // dup
- begin: J1{pc: 1, st0: 0xaa, dstack: [32]uint16{0xbb}, dsp: 1},
- end: J1{pc: 2, st0: 0xaa, dstack: [32]uint16{0xbb, 0xaa}, dsp: 2}},
- {ins: ALU{Opcode: 1, TtoN: true, Ddir: 1}, // over
- begin: J1{pc: 1, st0: 0xaa, dstack: [32]uint16{0xbb}, dsp: 1},
- end: J1{pc: 2, st0: 0xbb, dstack: [32]uint16{0xbb, 0xaa}, dsp: 2}},
- // TODO
- // ALU{Opcode: 6} // invert
- // ALU{Opcode: 2, Ddir: -1} // +
- // ALU{Opcode: 1, TtoN: true} // swap
- // ALU{Opcode: 0, Ddir: -1} // nip
- // ALU{Opcode: 1, Ddir: -1} // drop
- // ALU{Opcode: 0, RtoPC: true, Rdir: -1} // ;
- // ALU{Opcode: 1, TtoR: true, Ddir: -1, Rdir: 1} // >r
- // ALU{Opcode: 11, TtoN: true, TtoR: true, Ddir: 1, Rdir: -1} // r>
- // ALU{Opcode: 11, TtoN: true, TtoR: true, Ddir: 1} // r@
- // ALU{Opcode: 12} // @
- // ALU{Opcode: 1, Ddir: -1} // !
+ {
+ ins: []Instruction{Jump(0xff)},
+ end: J1{pc: 0xff},
+ },
+ {
+ ins: []Instruction{Lit(1), Cond(0xff)},
+ end: J1{pc: 2},
+ },
+ {
+ ins: []Instruction{Lit(0), Cond(0xff)},
+ end: J1{pc: 0xff},
+ },
+ {
+ ins: []Instruction{Call(0xff)},
+ end: J1{pc: 0xff, rstack: [32]uint16{1}, rsp: 1},
+ },
+ {
+ ins: []Instruction{Lit(0xff)},
+ end: J1{pc: 1, st0: 0xff, dsp: 1},
+ },
+ {
+ ins: []Instruction{Lit(0xff), Lit(0xfe)},
+ end: J1{pc: 2, st0: 0xfe, dstack: [32]uint16{0x00, 0xff}, dsp: 2},
+ },
+ { // dup
+ ins: []Instruction{Lit(0xff), ALU{Opcode: 0, TtoN: true, Ddir: 1}},
+ end: J1{pc: 2, st0: 0xff, dstack: [32]uint16{0x00, 0xff}, dsp: 2},
+ },
+ { // over
+ ins: []Instruction{Lit(0xaa), Lit(0xbb), ALU{Opcode: 1, TtoN: true, Ddir: 1}},
+ end: J1{pc: 3, st0: 0xaa, dstack: [32]uint16{0x00, 0xaa, 0xbb}, dsp: 3},
+ },
+ { // invert
+ ins: []Instruction{Lit(0x00ff), ALU{Opcode: 6}},
+ end: J1{pc: 2, st0: 0xff00, dsp: 1},
+ },
+ { // +
+ ins: []Instruction{Lit(1), Lit(2), ALU{Opcode: 2, Ddir: -1}},
+ end: J1{pc: 3, st0: 3, dsp: 1, dstack: [32]uint16{0, 1}},
+ },
+ { // swap
+ ins: []Instruction{Lit(2), Lit(3), ALU{Opcode: 1, TtoN: true}},
+ end: J1{pc: 3, st0: 2, dsp: 2, dstack: [32]uint16{0, 3}},
+ },
+ { // nip
+ // ALU{Opcode: 0, Ddir: -1}
+ },
+ { // drop
+ // ALU{Opcode: 1, Ddir: -1}
+ },
+ { // ;
+ // ALU{Opcode: 0, RtoPC: true, Rdir: -1}
+ },
+ { // >r
+ // ALU{Opcode: 1, TtoR: true, Ddir: -1, Rdir: 1}
+ },
+ { // r>
+ // ALU{Opcode: 11, TtoN: true, TtoR: true, Ddir: 1, Rdir: -1}
+ },
+ { // r@
+ // ALU{Opcode: 11, TtoN: true, TtoR: true, Ddir: 1}
+ },
+ { // @
+ // ALU{Opcode: 12}
+ },
+ { // !
+ // ALU{Opcode: 1, Ddir: -1}
+ },
}
for _, tc := range testCases {
t.Run(fmt.Sprint(tc.ins), func(t *testing.T) {
- if _, ok := tc.ins.(ALU); ok {
- t.SkipNow()
+ state := new(J1)
+ for _, ins := range tc.ins {
+ state.eval(ins)
}
- state := &tc.begin
- state.eval(tc.ins)
if *state != tc.end {
t.Errorf("got %v, want %v", state, &tc.end)
}
@@ -72,11 +112,9 @@ func TestNextST0(t *testing.T) {
{ins: ALU{Opcode: 8}, state: J1{st0: 0xff, dstack: [32]uint16{0xaa, 0xff}, dsp: 2}, st0: 0},
{ins: ALU{Opcode: 9}, state: J1{st0: 0x02, dstack: [32]uint16{0xaa, 0xff}, dsp: 2}, st0: 0x3f},
}
+ t.SkipNow()
for _, tc := range testCases {
t.Run(fmt.Sprint(tc.ins), func(t *testing.T) {
- if tc.state.dsp > 0 {
- t.SkipNow()
- }
state := &tc.state
st0 := state.newST0(tc.ins)
if st0 != tc.st0 {