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Merge pull request #1789 from nspcc-dev/vm/pow

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vm: implement POW and SQRT opcodes
This commit is contained in:
Roman Khimov 2021-03-01 17:08:44 +03:00 committed by GitHub
commit dbc86b4ecc
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 83 additions and 39 deletions
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2
pkg/core/fee/opcode.go
View file

@ -162,6 +162,8 @@ var coefficients = map[opcode.Opcode]int64{
opcode.MUL: 1 << 3,
opcode.DIV: 1 << 3,
opcode.MOD: 1 << 3,
opcode.POW: 1 << 6,
opcode.SQRT: 1 << 11,
opcode.SHL: 1 << 3,
opcode.SHR: 1 << 3,
opcode.NOT: 1 << 2,

2
pkg/vm/opcode/opcode.go
View file

@ -177,6 +177,8 @@ const (
MUL Opcode = 0xA0
DIV Opcode = 0xA1
MOD Opcode = 0xA2
POW Opcode = 0xA3
SQRT Opcode = 0xA4
SHL Opcode = 0xA8
SHR Opcode = 0xA9
NOT Opcode = 0xAA

80
pkg/vm/opcode/opcode_string.go
View file

@ -159,6 +159,8 @@ func _() {
_ = x[MUL-160]
_ = x[DIV-161]
_ = x[MOD-162]
_ = x[POW-163]
_ = x[SQRT-164]
_ = x[SHL-168]
_ = x[SHR-169]
_ = x[NOT-170]
@ -198,7 +200,7 @@ func _() {
_ = x[CONVERT-219]
}
const _Opcode_name = "PUSHINT8PUSHINT16PUSHINT32PUSHINT64PUSHINT128PUSHINT256PUSHAPUSHNULLPUSHDATA1PUSHDATA2PUSHDATA4PUSHM1PUSH0PUSH1PUSH2PUSH3PUSH4PUSH5PUSH6PUSH7PUSH8PUSH9PUSH10PUSH11PUSH12PUSH13PUSH14PUSH15PUSH16NOPJMPJMP_LJMPIFJMPIF_LJMPIFNOTJMPIFNOT_LJMPEQJMPEQ_LJMPNEJMPNE_LJMPGTJMPGT_LJMPGEJMPGE_LJMPLTJMPLT_LJMPLEJMPLE_LCALLCALL_LCALLACALLTABORTASSERTTHROWTRYTRY_LENDTRYENDTRY_LENDFINALLYRETSYSCALLDEPTHDROPNIPXDROPCLEARDUPOVERPICKTUCKSWAPROTROLLREVERSE3REVERSE4REVERSENINITSSLOTINITSLOTLDSFLD0LDSFLD1LDSFLD2LDSFLD3LDSFLD4LDSFLD5LDSFLD6LDSFLDSTSFLD0STSFLD1STSFLD2STSFLD3STSFLD4STSFLD5STSFLD6STSFLDLDLOC0LDLOC1LDLOC2LDLOC3LDLOC4LDLOC5LDLOC6LDLOCSTLOC0STLOC1STLOC2STLOC3STLOC4STLOC5STLOC6STLOCLDARG0LDARG1LDARG2LDARG3LDARG4LDARG5LDARG6LDARGSTARG0STARG1STARG2STARG3STARG4STARG5STARG6STARGNEWBUFFERMEMCPYCATSUBSTRLEFTRIGHTINVERTANDORXOREQUALNOTEQUALSIGNABSNEGATEINCDECADDSUBMULDIVMODSHLSHRNOTBOOLANDBOOLORNZNUMEQUALNUMNOTEQUALLTLTEGTGTEMINMAXWITHINPACKUNPACKNEWARRAY0NEWARRAYNEWARRAY_TNEWSTRUCT0NEWSTRUCTNEWMAPSIZEHASKEYKEYSVALUESPICKITEMAPPENDSETITEMREVERSEITEMSREMOVECLEARITEMSPOPITEMISNULLISTYPECONVERT"
const _Opcode_name = "PUSHINT8PUSHINT16PUSHINT32PUSHINT64PUSHINT128PUSHINT256PUSHAPUSHNULLPUSHDATA1PUSHDATA2PUSHDATA4PUSHM1PUSH0PUSH1PUSH2PUSH3PUSH4PUSH5PUSH6PUSH7PUSH8PUSH9PUSH10PUSH11PUSH12PUSH13PUSH14PUSH15PUSH16NOPJMPJMP_LJMPIFJMPIF_LJMPIFNOTJMPIFNOT_LJMPEQJMPEQ_LJMPNEJMPNE_LJMPGTJMPGT_LJMPGEJMPGE_LJMPLTJMPLT_LJMPLEJMPLE_LCALLCALL_LCALLACALLTABORTASSERTTHROWTRYTRY_LENDTRYENDTRY_LENDFINALLYRETSYSCALLDEPTHDROPNIPXDROPCLEARDUPOVERPICKTUCKSWAPROTROLLREVERSE3REVERSE4REVERSENINITSSLOTINITSLOTLDSFLD0LDSFLD1LDSFLD2LDSFLD3LDSFLD4LDSFLD5LDSFLD6LDSFLDSTSFLD0STSFLD1STSFLD2STSFLD3STSFLD4STSFLD5STSFLD6STSFLDLDLOC0LDLOC1LDLOC2LDLOC3LDLOC4LDLOC5LDLOC6LDLOCSTLOC0STLOC1STLOC2STLOC3STLOC4STLOC5STLOC6STLOCLDARG0LDARG1LDARG2LDARG3LDARG4LDARG5LDARG6LDARGSTARG0STARG1STARG2STARG3STARG4STARG5STARG6STARGNEWBUFFERMEMCPYCATSUBSTRLEFTRIGHTINVERTANDORXOREQUALNOTEQUALSIGNABSNEGATEINCDECADDSUBMULDIVMODPOWSQRTSHLSHRNOTBOOLANDBOOLORNZNUMEQUALNUMNOTEQUALLTLTEGTGTEMINMAXWITHINPACKUNPACKNEWARRAY0NEWARRAYNEWARRAY_TNEWSTRUCT0NEWSTRUCTNEWMAPSIZEHASKEYKEYSVALUESPICKITEMAPPENDSETITEMREVERSEITEMSREMOVECLEARITEMSPOPITEMISNULLISTYPECONVERT"
var _Opcode_map = map[Opcode]string{
0: _Opcode_name[0:8],
@ -350,43 +352,45 @@ var _Opcode_map = map[Opcode]string{
160: _Opcode_name[856:859],
161: _Opcode_name[859:862],
162: _Opcode_name[862:865],
168: _Opcode_name[865:868],
169: _Opcode_name[868:871],
170: _Opcode_name[871:874],
171: _Opcode_name[874:881],
172: _Opcode_name[881:887],
177: _Opcode_name[887:889],
179: _Opcode_name[889:897],
180: _Opcode_name[897:908],
181: _Opcode_name[908:910],
182: _Opcode_name[910:913],
183: _Opcode_name[913:915],
184: _Opcode_name[915:918],
185: _Opcode_name[918:921],
186: _Opcode_name[921:924],
187: _Opcode_name[924:930],
192: _Opcode_name[930:934],
193: _Opcode_name[934:940],
194: _Opcode_name[940:949],
195: _Opcode_name[949:957],
196: _Opcode_name[957:967],
197: _Opcode_name[967:977],
198: _Opcode_name[977:986],
200: _Opcode_name[986:992],
202: _Opcode_name[992:996],
203: _Opcode_name[996:1002],
204: _Opcode_name[1002:1006],
205: _Opcode_name[1006:1012],
206: _Opcode_name[1012:1020],
207: _Opcode_name[1020:1026],
208: _Opcode_name[1026:1033],
209: _Opcode_name[1033:1045],
210: _Opcode_name[1045:1051],
211: _Opcode_name[1051:1061],
212: _Opcode_name[1061:1068],
216: _Opcode_name[1068:1074],
217: _Opcode_name[1074:1080],
219: _Opcode_name[1080:1087],
163: _Opcode_name[865:868],
164: _Opcode_name[868:872],
168: _Opcode_name[872:875],
169: _Opcode_name[875:878],
170: _Opcode_name[878:881],
171: _Opcode_name[881:888],
172: _Opcode_name[888:894],
177: _Opcode_name[894:896],
179: _Opcode_name[896:904],
180: _Opcode_name[904:915],
181: _Opcode_name[915:917],
182: _Opcode_name[917:920],
183: _Opcode_name[920:922],
184: _Opcode_name[922:925],
185: _Opcode_name[925:928],
186: _Opcode_name[928:931],
187: _Opcode_name[931:937],
192: _Opcode_name[937:941],
193: _Opcode_name[941:947],
194: _Opcode_name[947:956],
195: _Opcode_name[956:964],
196: _Opcode_name[964:974],
197: _Opcode_name[974:984],
198: _Opcode_name[984:993],
200: _Opcode_name[993:999],
202: _Opcode_name[999:1003],
203: _Opcode_name[1003:1009],
204: _Opcode_name[1009:1013],
205: _Opcode_name[1013:1019],
206: _Opcode_name[1019:1027],
207: _Opcode_name[1027:1033],
208: _Opcode_name[1033:1040],
209: _Opcode_name[1040:1052],
210: _Opcode_name[1052:1058],
211: _Opcode_name[1058:1068],
212: _Opcode_name[1068:1075],
216: _Opcode_name[1075:1081],
217: _Opcode_name[1081:1087],
219: _Opcode_name[1087:1094],
}
func (i Opcode) String() string {

2
pkg/vm/testdata/neo-vm vendored

@ -1 +1 @@
Subproject commit e3f1584b1953dcc13075a57803240858c8a480de
Subproject commit 3fb22406ba72a86fb251c763aea72677f9f9baa2

16
pkg/vm/vm.go
View file

@ -910,6 +910,22 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
v.estack.PushVal(new(big.Int).Rem(a, b))
case opcode.POW:
exp := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
if ei := exp.Int64(); !exp.IsInt64() || ei > math.MaxInt32 || ei < 0 {
panic("invalid exponent")
}
v.estack.PushVal(new(big.Int).Exp(a, exp, nil))
case opcode.SQRT:
a := v.estack.Pop().BigInt()
if a.Sign() == -1 {
panic("negative value")
}
v.estack.PushVal(new(big.Int).Sqrt(a))
case opcode.SHL, opcode.SHR:
b := v.estack.Pop().BigInt().Int64()
if b == 0 {

20
pkg/vm/vm_test.go
View file

@ -6,6 +6,7 @@ import (
"encoding/hex"
"errors"
"fmt"
"math"
"math/big"
"math/rand"
"testing"
@ -935,6 +936,25 @@ func TestSUBBigResult(t *testing.T) {
runWithArgs(t, prog, nil, -2, bi)
}
func TestPOW(t *testing.T) {
prog := makeProgram(opcode.POW)
t.Run("good, positive", getTestFuncForVM(prog, 9, 3, 2))
t.Run("good, negative, even", getTestFuncForVM(prog, 4, -2, 2))
t.Run("good, negative, odd", getTestFuncForVM(prog, -8, -2, 3))
t.Run("zero", getTestFuncForVM(prog, 1, 3, 0))
t.Run("negative exponent", getTestFuncForVM(prog, nil, 3, -1))
t.Run("too big exponent", getTestFuncForVM(prog, nil, 1, math.MaxInt32+1))
}
func TestSQRT(t *testing.T) {
prog := makeProgram(opcode.SQRT)
t.Run("good, positive", getTestFuncForVM(prog, 3, 9))
t.Run("good, round down", getTestFuncForVM(prog, 2, 8))
t.Run("one", getTestFuncForVM(prog, 1, 1))
t.Run("zero", getTestFuncForVM(prog, 0, 0))
t.Run("negative value", getTestFuncForVM(prog, nil, -1))
}
func TestSHR(t *testing.T) {
prog := makeProgram(opcode.SHR)
t.Run("Good", getTestFuncForVM(prog, 1, 4, 2))