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272 commits

Author SHA1 Message Date
Evgenii Stratonikov
781def735d vm: use Null item as a default value for Array/Struct elements 2020-05-22 14:16:32 +03:00
Evgenii Stratonikov
f4fa712440 vm: make PUSH0 emit Integer 2020-05-22 14:16:32 +03:00
Evgenii Stratonikov
3917b4b4e4 vm: update stack size in SETITEM properly 2020-05-21 18:00:51 +03:00
Evgenii Stratonikov
98c508d361 vm: implement MEMCPY opcode 
MEMCPY copies byte-slice to a destination buffer.
 2020-05-20 17:45:56 +03:00
Evgenii Stratonikov
a5f6e0e53d vm: implement NEWBUFFER opcode 2020-05-20 17:45:56 +03:00
Evgenii Stratonikov
a3a3a77431 vm: make slice opcodes emit Buffer 2020-05-20 17:45:56 +03:00
Evgenii Stratonikov
c3f7832f3b vm: implement Buffer stack item 
Buffer is a stack item type introduced in NEO3
which represents mutable byte-array.
 2020-05-20 17:45:56 +03:00
Evgenii Stratonikov
0cb6dc47e4 vm: implement slot-related opcodes 
1. Slot is a new mechanism for storing variables during execution
which is more convenient than alt.stack. This commit implements
support for slot opcodes in both vm and compiler.
2. Remove old alt.stack opcodes.
3. Do not process globals at the start of every function, but instead
load them single time at main.
 2020-05-12 16:23:08 +03:00
Evgenii Stratonikov
af2abedd86 vm: implement reference counter 
It is convenient to have all reference-counting logic
in a separate struct.
 2020-05-12 16:15:14 +03:00
Evgenii Stratonikov
1d3fb3d6f5 vm: implement PUSHA/CALLA opcodes 2020-05-12 12:56:51 +03:00
Evgenii Stratonikov
73c82584a3 vm,compiler: replace APPCALL with System.Contract.Call 
Contract calls are performed via syscall System.Contract.Call
in NEO3. This implements this in compiler and removes APPCALL from the
VM.
 2020-05-07 14:52:03 +03:00
Evgenii Stratonikov
977c431bf1 vm: implement ASSERT/ABORT opcodes 
Rename THROWIFNOT to ASSERT, add ABORT opcode.
ABORT cannot be caught, but the implementation should be postponed until
exception handling is implemented.
 2020-05-06 15:54:19 +03:00
Evgenii Stratonikov
dd20320615 vm: remove XSWAP/XTUCK opcodes 
Regenerate RPC testchain as these were used in compiler.
 2020-05-06 13:05:22 +03:00
Evgenii Stratonikov
d18199ce42 vm: implement REVERSE* opcodes 
Use new opcodes in the compiler instead of XSWAP/ROLL.
 2020-05-06 13:03:49 +03:00
Evgenii Stratonikov
c8a1188ee1 vm: implement CLEAR opcode 2020-05-06 13:02:57 +03:00
Evgenii Stratonikov
525527f750 vm: reorder stack opcodes 
Leave *ALTSTACK opcodes for now as they are needed in compiler while
slot opcodes are not yet here.
 2020-05-06 13:02:14 +03:00
Evgenii Stratonikov
115919aaf7 vm: process OLDPUSH1 at the context level 
The only usecase for this opcode is single-byte verification scripts.
 2020-05-06 13:00:00 +03:00
Anna Shaleva
5ece9922c1 vm: hide GetContextScriptHash() method 
After adding ScriptHashGetter interface to vm, there's no need in
GetContextScriptHash() to be exported.
 2020-05-04 11:53:31 +03:00
Anna Shaleva
73167999cc core: add cosigners field to transaction 
closes #864
 2020-05-04 11:53:31 +03:00
Evgenii Stratonikov
9081211f12 vm: implement NOTEQUAL opcode 2020-04-30 18:00:15 +03:00
Evgenii Stratonikov
70f0c656b0 vm: check Integer size on creation 2020-04-30 18:00:15 +03:00
Evgenii Stratonikov
a64a0f2681 vm: reorder arithmetic opcodes 2020-04-30 18:00:15 +03:00
Evgenii Stratonikov
519b31a704 vm: remove crypto-related opcodes 
All cryptography has moved to interops in NEO3.
There is no SHA256 interop RN, but it is to appear later.
Closes #777.
 2020-04-29 19:16:38 +03:00
Evgenii Stratonikov
7e98a2ffa0 vm: implements CONVERT opcode 2020-04-28 16:38:52 +03:00
Evgenii Stratonikov
7c3d7c0261 vm: implement NEWARRAYT opcode 2020-04-27 09:06:48 +03:00
Evgenii Stratonikov
d3b9aef8e2 vm: implement ISTYPE opcode 
Also make StackItemType public and reorder it according to NEO3.
 2020-04-27 09:01:26 +03:00
Evgenii Stratonikov
48a41bd737 vm: implement CLEARITEMS opcode 2020-04-27 09:01:26 +03:00
Evgenii Stratonikov
9fd04aefa5 vm: implement NEWARRAY0 and NEWSTRUCT0 opcodes 2020-04-24 13:49:10 +03:00
Evgenii Stratonikov
03761421f8 vm: reorder Array/Map opcodes 
Also SIZE can be used for both Arrays/Maps and ByteArrays.
 2020-04-24 13:48:44 +03:00
Evgenii Stratonikov
d6624a92ca vm: implement new JMP* and CALL* opcodes 
In compiler JMP*_L opcodes are always used, as this requires less effort.
 2020-04-24 10:16:41 +03:00
Evgenii Stratonikov
fba185cd99 vm: remove stack isolation opcodes 
They are not present in NEO3 and will be creating additional difficulties
during future flow-control opcodes implementation.
 2020-04-24 10:15:14 +03:00
Evgenii Stratonikov
008e6eb233 vm: implement new PUSH opcodes 2020-04-23 10:52:28 +03:00
Evgenii Stratonikov
cde4ccf01c vm: remove CHECKSIG/VERIFY/CHECKMULTISIG opcodes 2020-04-20 11:55:24 +03:00
Evgenii Stratonikov
4740d937aa vm: dont use SetCheckedHash outside of vm package 2020-04-20 11:55:24 +03:00
Roman Khimov
91f8626c42 vm: disallow negative shifts for SHL/SHR 
Follow neo-project/neo-vm#257 change for Neo 3.
 2020-04-19 19:15:00 +03:00
Evgenii Stratonikov
ceff8736f2 vm: use ID-based syscalls 
In NEO3 SYSCALL opcode has 4-byte ID parameter.
This commit removes support for string-based syscalls and
changes SYSCALL's parameter to be fixed 4-byte value.
 2020-04-17 11:46:31 +03:00
Evgenii Stratonikov
bfbbef952a vm: move InteropNameToID to emit package 2020-04-17 11:46:31 +03:00
Evgenii Stratonikov
2fd26287c5 vm: update SUBSTR to NEO3 version 
This reverts commit 9ebb793009.
 2020-04-17 11:46:31 +03:00
Evgenii Stratonikov
948729137f vm: remove HASH160/HASH256 opcodes 2020-04-13 13:47:39 +03:00
Evgenii Stratonikov
c23af595c9 core: implement Neo.Crypto.ECDsaCheckMultisig interop 2020-04-13 13:47:39 +03:00
Evgenii Stratonikov
1611ede58c crypto/keys: implement NewPublicKeyFromBytes() 
It is convenient to have a single function instead of
allocating new `PublicKey` and using `DecodeBytes()` on it.
 2020-04-13 13:13:15 +03:00
Roman Khimov
5a22651e36
Merge pull request #784 from nspcc-dev/neo3/null 
vm: support NULL stack item
 2020-04-10 10:38:17 +03:00
Evgenii Stratonikov
96806262bf vm: handle negative arguments in SHL/SHR 
Do it as in reference implementation: a >> -b == a << b.
 2020-04-06 10:46:35 +03:00
Evgenii Stratonikov
0023c4f1f6 vm: use truncated division in MOD 
Mimic C#'s `%` behavior.
Related 4b44190 (#773).
 2020-04-06 09:30:48 +03:00
Evgenii Stratonikov
f7f48d0048 vm: implement ISNULL opcode 2020-04-02 14:15:17 +03:00
Evgenii Stratonikov
3db030bbb6 vm: implement PUSHNULL opcode 2020-04-02 14:15:17 +03:00
Roman Khimov
2d0ad30fcf vm: rework Map with internal slice representation 
Which makes iterating over map stable which is important for serialization and
and even fixes occasional test failures. We use the same ordering here as
NEO 3.0 uses, but it should also be fine for NEO 2.0 because it has no
defined order.
 2020-04-01 19:33:53 +03:00
Evgenii Stratonikov
4522eed1bb vm: fix offset for CALLI opcode 
It is different from other JMP* and +2 should be added to the parameter.
 2020-03-26 13:09:55 +03:00
Evgenii Stratonikov
4b44190485 vm: use truncated division for Integers 
When divisor is negative, the result is truncated towards
zero.
 2020-03-17 15:45:56 +03:00
Roman Khimov
1b5dd53e07
Merge pull request #746 from nspcc-dev/fix/equal 
vm: implement EQUAL opcode properly

Fixes #745, #749.
 2020-03-12 11:46:51 +03:00
Evgenii Stratonikov
dfc59129c7 vm: implement EQUAL opcode properly 
When comparing elements of different types, conversions
should be performed. This commit implement custom equality
predicate for each stack item type.
 2020-03-11 17:19:10 +03:00
Roman Khimov
8318adac56 vm: add support for dynamic invocations in APPCALL 
Fixes #740.
 2020-03-10 17:17:36 +03:00
Roman Khimov
e41d434a49 *: move all packages from CityOfZion to nspcc-dev 2020-03-03 17:21:42 +03:00
Roman Khimov
56e37ad6ba vm: drop duplicating stackItem structure, build JSON from Parameters 
smartcontract.Parameter has everything needed now.
 2020-03-03 15:38:03 +03:00
Evgenii Stratonikov
2a86149c82 vm: leave single CHECKMULTISIG implementation 
Remove sequential implementation and benchmarks.
They will be still present in commit history.
 2020-02-05 17:17:22 +03:00
Roman Khimov
02a5e036fc vm: deduplicate checkMultisigPar 
Make its logic more clear.
 2020-02-05 17:12:23 +03:00
Evgenii Stratonikov
d93d060010 vm: parallelize CHECKMULTISIG 2020-02-05 17:12:18 +03:00
Evgenii Stratonikov
7a6d6f43ce vm: get rid of recursive (*VM).execute calls 
Recursive execute() calls can affect gas calculation.
This commit makes execute() be called only for real opcodes
and moves duplicate logic for CALL/JMP into a separate function.
 2020-01-22 14:31:57 +03:00
Evgenii Stratonikov
d72d978a19 vm: abstract out GetInterop() function 2020-01-22 14:04:40 +03:00
Evgenii Stratonikov
c22d09adad vm: set GAS limit 
Make it possible to set maximum amount of GAS which can be spent
during execution.
 2020-01-22 14:04:40 +03:00
Evgenii Stratonikov
0662a7e3c2 vm: calculate GAS spent during execution 
If getPrice callback is provided, accumulate spent GAS.
 2020-01-22 14:04:40 +03:00
Roman Khimov
cc16dac0b4 vm: optimize script loading a bit 
Preseed the scriptHash value when we already know it. Eliminates this time
waste from the pprof graph, but doesn't really change anything in the 1.4M ->
1.5M 100K mainnet blocks import test.
 2019-12-23 18:02:39 +03:00
Roman Khimov
a7457d08a1 vm/core: add ID support for SYSCALL, redo interop registration 
This solves two problems:
 * adds support for shortened SYSCALL form that uses IDs (similar to #434, but
   for NEO 2.0, supporting both forms), which is important for compatibility
   with C# node and mainnet chain that uses it from some height
 * reworks interop plugging to use callbacks rather than appending to the map,
   these map mangling functions are clearly visible in the VM profiling
   statistics and we want spawning a VM to be fast, so it makes sense
   optimizing it. This change moves most of the work to the init() phase
   making VM setup cheaper.

Caveats:
 * InteropNameToID accepts `[]byte` because that's the thing we have in
   SYSCALL processing and that's the most often usecase for it, it leads to
   some conversions in other places but that's acceptable because those are
   either tests or init()
 * three getInterop functions are: `getDefaultVMInterop`, `getSystemInterop`
   and `getNeoInterop`

Our 100K (1.4M->1.5M) block import time improves by ~4% with this change.
 2019-12-19 13:35:42 +03:00
Roman Khimov
21efcb012b vm: fix non-dupped items in PICKITEM 
TestPICKITEMDupMap and TestPICKITEMDupArray were failing.
 2019-12-17 20:26:30 +03:00
Roman Khimov
a6d60e387a vm: fix OVER and PICK to duplicate stack items 
TestPICKDup and TestOVERDup failed without this.
 2019-12-17 20:26:30 +03:00
Roman Khimov
c596a6b273 vm: fix INVERT behaviour for converted values 
Tests added were failing before this change.
 2019-12-17 20:26:30 +03:00
Roman Khimov
587cfc7c66 vm: optimize ROLL/ROT, refactor common code 
Add `Roll` method to Stack that doesn't pop and push values and use it for
ROLL and ROT.

1.4M->1.5M 100K block import test before:
real    3m44,292s
user    5m43,494s
sys     0m34,741s

After:
real    3m40,449s
user    5m42,701s
sys     0m35,500s
 2019-12-16 19:53:21 +03:00
Roman Khimov
2627628387 vm: optimize SWAP instruction, refactor common code 
Add `Swap` method to the Stack and use it for both SWAP and XSWAP. Avoid
element popping and pushing (and associated accounting costs).

1.4M->1.5M 100K block import test before:
real    3m51,885s
user    5m54,744s
sys     0m38,444s

After:
real    3m44,292s
user    5m43,494s
sys     0m34,741s
 2019-12-16 19:02:40 +03:00
Roman Khimov
0afaff2f79 vm: microoptimize RegisterInteropFuncs() 
Avoid useless copying.
 2019-12-13 17:02:28 +03:00
Roman Khimov
d0f9a28196 vm/core: improve block import speed with PublicKey caching 
This change (closely related to the neo-project/neo#1321 proposal) speeds up
1.4M mainnet blocks import by 30%. Basically, we're eliminating key decoding
for block's multisignature that has the same keys most of the time.

Things I don't like about this patch:
 * yet another parameter for verifyHashAgainstScript()
 * vm keys are not copied in/out

But it's rather simple and solves the problem for this particular case, so I
think it's worth it.
 2019-12-10 19:13:29 +03:00
Evgenii Stratonikov
7179e4ba9f util: add LE suffix to Uint256 methods 2019-12-06 12:16:55 +03:00
Evgenii Stratonikov
57efad912c util: add LE suffix to Uint160 methods 2019-12-06 12:16:55 +03:00
Roman Khimov
8d4dd2d2e1 vm: move opcodes into their own package 
This allows easier reuse of opcodes and in some cases allows to eliminate
dependencies on the whole vm package, like in compiler that only needs opcodes
and doesn't care about VM for any other purpose.

And yes, they're opcodes because an instruction is a whole thing with
operands, that's what context.Next() returns.
 2019-12-03 18:22:14 +03:00
Evgenii Stratonikov
816d78b5ee vm: redefine SHL/SHR limits based on integer size 2019-11-07 12:50:11 +03:00
Evgenii Stratonikov
439cd72294 vm: restrict BigInteger item size 2019-11-07 12:34:27 +03:00
Evgenii Stratonikov
7d40d2f71e vm: make StepOut/StepOver match original VM behavior 2019-11-06 12:25:04 +03:00
Evgenii Stratonikov
9ebb793009 vm: revert SUBSTR offset behavior to NEO 2.x 2019-11-06 12:15:55 +03:00
Evgenii Stratonikov
067d9655bf vm: restrict total stack item count 2019-11-06 11:03:43 +03:00
Evgenii Stratonikov
ed758458d5 vm: implement serialization interops in core package 2019-11-05 17:10:52 +03:00
Evgenii Stratonikov
25f77257ce vm: implement Boolean and ByteArray item serialization 2019-11-05 15:15:39 +03:00
Roman Khimov
2f6e678a19
Merge pull request #463 from nspcc-dev/smartcontract-fixes 
Smartcontract RPC fixes
 2019-10-29 20:54:46 +03:00
Roman Khimov
47f66dfbf3 vm: add State() method to get a state description 2019-10-29 18:26:04 +03:00
Evgenii Stratonikov
c7f0b7bd68 vm: restrict max invocation stack size 2019-10-29 15:09:17 +03:00
Roman Khimov
ae7687422c vm: clear state in Load() 
Make VM usable after the first run.
 2019-10-29 12:53:09 +03:00
Roman Khimov
f0cffe0d3f vm: implement stack isolation opcodes, fix #192 
No tests yet.
 2019-10-25 18:25:12 +03:00
Roman Khimov
a9a2a3c711 vm: fix tests failing, follow-up to #426 
Deal with input and transitional VM states properly.
 2019-10-22 15:20:44 +03:00
Roman Khimov
3cbb699eb7
Merge pull request #426 from nspcc-dev/logger_247 
Change fmt.Println to log, close #247.
 2019-10-22 14:41:30 +03:00
Vsevolod Brekelov
e2bfff8666 vm: removed mute mode and pushed logging to upper lvl 
VM should be responsible for code execution and in case anyone interested in additional logging or errors they could handle them like we do it iin cli.
 2019-10-22 13:44:14 +03:00
Evgenii Stratonikov
b2609786e9 vm: copy slice in NEWARRAY/NEWSTRUCT 
When performing NEWARRAY on a Struct or NEWSTRUCT on a Array,
underlying slice needs to be copied, because when it's capacity
doesn't matches it's length, underlying storage will be used
for appends even if it is already pointed at by another slice.
 2019-10-22 13:34:35 +03:00
Vsevolod Brekelov
f2805541cb vm: fix style and comments 2019-10-21 14:22:17 +03:00
Evgenii Stratonikov
cae431b844 vm: restrict max item size in CAT 2019-10-17 17:09:42 +03:00
Evgenii Stratonikov
6d7016c3b9 vm: restrict max size in SETITEM 2019-10-17 12:17:06 +03:00
Evgenii Stratonikov
6f1f9e56bb vm: restrict max size in PACK 2019-10-17 12:17:06 +03:00
Evgenii Stratonikov
2d56c66bde vm: restrict max size in APPEND 2019-10-17 12:17:01 +03:00
Evgenii Stratonikov
8abcaeee6f vm: restrict max size in NEWARRAY/NEWSTRUCT 2019-10-17 11:48:48 +03:00
Vsevolod Brekelov
591d5eafbe vm: add stepInto,stepOver,stepOut 
Original C# vm debugger behavior
 2019-10-14 18:37:11 +03:00
Roman Khimov
dca332f333 vm: use new Context.Next() to properly dump programs 
Fix #295, deduplicate code and add `inspect` parameter to the vm command to
dump AVMs (`contract inspect` works with Go code).
 2019-10-04 16:13:39 +03:00
Roman Khimov
53a3b18652 vm: completely separate instruction read and execution phases 
Make Context.Next() return both opcode and instruction parameter if any. This
simplifies some code and needed to deal with #295.
 2019-10-04 16:13:39 +03:00
Roman Khimov
d62a367900 vm: add Value() method to Element 
It gives access to the internal value's Value() which is essential for interop
functions that need to get something from InteropItems. And it also simplifies
some already existing code along the way.
 2019-10-04 16:13:39 +03:00
Roman Khimov
0c963875af vm: check for fault flag first in Run() 
Switch cases are evaluated sequentially and the fault case is top-priority to
handle.
 2019-10-04 16:13:39 +03:00
Roman Khimov
705c7f106f vm: don't panic if there is no result in PopResult() 
This function is intended to be ran outside of the execute's panic recovery
mechanism, so it shouldn't panic if there is no result.
 2019-10-04 16:13:39 +03:00
Roman Khimov
a357d99624 vm: introduce MaxArraySize constant 
This is both for #373 and for interop functions that have to check some
inputs.
 2019-10-04 16:13:39 +03:00
Roman Khimov
da2156f955 vm: add batched RegisterInteropFuncs 2019-10-04 16:13:39 +03:00
Roman Khimov
26e3b6abbe vm: extend interops to contain price 
The same way C# node does.
 2019-10-04 16:13:39 +03:00
Roman Khimov
ceca9cdb67 core/vm: implement contract storage and script retrieval 
Fixes script invocations via the APPCALL instruction. Adjust contract state
field types accordingly.
 2019-10-04 16:13:39 +03:00
Roman Khimov
c3591d8897 vm: fix CHECKMULTISIG to comply with NEO VM implementation 
Testing with testnet quickly revealed that our code has an issue when the key
count doesn't equal signature count, fix it and add some comments.
 2019-10-01 13:41:26 +03:00
Evgenii Stratonikov
c7c4291774 vm: simplify APPEND implementation a bit 2019-09-25 17:53:36 +03:00
Evgenii Stratonikov
13d7770c68 vm: support Map in ARRAYSIZE 
Also make logic the same as in reference implementation
and add tests.
 2019-09-25 17:53:36 +03:00
Evgenii Stratonikov
c66f493017 vm: compare Map by reference in EQUAL 2019-09-25 17:53:36 +03:00
Evgenii Stratonikov
c0be2b2a99 vm: support Map in REMOVE 2019-09-25 17:53:36 +03:00
Evgenii Stratonikov
8b6bddca3c vm: support Map in PICKITEM and SETITEM 2019-09-25 17:53:36 +03:00
Evgenii Stratonikov
d7bb50c609 vm: implement VALUES opcode 2019-09-25 17:53:36 +03:00
Evgenii Stratonikov
2da64267b0 vm: implement KEYS opcode 2019-09-25 17:53:34 +03:00
Evgenii Stratonikov
0fb4bb05cf vm: implement HASKEY opcode 2019-09-25 12:08:41 +03:00
Evgenii Stratonikov
df18da0ac9 vm: implement NEWMAP opcode 2019-09-24 17:06:17 +03:00
Roman Khimov
ca9c9be71f vm: add CHECKSIG/VERIFY/CHECKMULTISIG implementations 
Fix #269.
 2019-09-24 13:01:54 +03:00
Roman Khimov
3bbeb2476e vm: introduce HasFailed() method and use it where appropriate 
It's gonna be used by external modules.
 2019-09-23 20:19:07 +03:00
Evgenii Stratonikov
3c53beca82 vm: restrict SHL/SHR arguments to -256..256 
Also unify SHL/SHR implementation.
 2019-09-23 15:13:10 +03:00
Evgenii Stratonikov
4a8be486f0 vm: do not pop items in OVER 2019-09-23 14:54:59 +03:00
Evgenii Stratonikov
7cd69ea8e2 vm: truncate length in SUBSTR 
Also fail on first error, without changing the stack.
 2019-09-23 14:54:59 +03:00
Evgenii Stratonikov
a88a8e13fc vm: compare Array by reference in EQUAL 2019-09-23 13:25:59 +03:00
Evgenii Stratonikov
99f1d761ca vm: clone Struct on APPEND 2019-09-23 13:25:59 +03:00
Evgenii Stratonikov
d2ccc3b017 vm: make REVERSE consume an item from stack 2019-09-16 15:50:51 +03:00
Evgenii Stratonikov
f0426ac2d5 vm: do nothing if SHL/SHR by 0 2019-09-16 15:50:51 +03:00
Evgenii Stratonikov
9eca5ee317 vm: convert SIZE argument to bytearray 2019-09-16 15:50:51 +03:00
Evgenii Stratonikov
9780889239 vm: make NEWARRAY/NEWSTRUCT accept bytearray 2019-09-16 15:50:51 +03:00
Evgenii Stratonikov
09e197eaf3 vm: make PUSH0 create empty bytearray 
Also make tests expect []byte{} instead of 0.
 2019-09-16 15:50:51 +03:00
Evgenii Stratonikov
66501f9ef9 vm: make REMOVE consume array from stack 2019-09-16 15:50:14 +03:00
Evgenii Stratonikov
71cfd14b92 vm: create an array of false items in NEWARRAY/NEWSTRUCT 2019-09-16 15:24:58 +03:00
Evgenii Stratonikov
bafdb916a0 vm: make PICKITEM accept bytearrays 2019-09-16 15:24:58 +03:00
Evgenii Stratonikov
1881adabb9 vm: fail if NIP has not enough arguments 2019-09-16 15:24:58 +03:00
Evgenii Stratonikov
6e4014547d vm: fail if DROP has no argument 2019-09-16 15:24:58 +03:00
Evgenii Stratonikov
729b7a0b24 vm: fail if ROT has not enough arguments 2019-09-16 15:24:58 +03:00
Evgenii Stratonikov
cf7fbb80ba vm: fail if EQUAL has not enough arguments 2019-09-16 15:24:58 +03:00
Evgenii Stratonikov
d257044298 vm: fail if XTUCK argument is 0 2019-09-16 15:24:58 +03:00
Evgenii Stratonikov
68c6c93980 vm: do not allow APPEND to operate on bytearray 2019-09-11 17:17:37 +03:00
Evgenii Stratonikov
723dcc6e25 vm: make APPEND push no value on stack 2019-09-11 17:17:34 +03:00
Roman Khimov
8311bda355 vm: harden LEFT and RIGHT implementations against negative indexes 2019-09-11 14:51:04 +03:00
Roman Khimov
17f3a21e27 vm: harden SUBSTR implementation against bad index/offset values 
The upper index bound for slices is capacity, not length. Check for negative
values also. Fixes #387.
 2019-09-11 14:37:41 +03:00
Roman Khimov
fc1075bf75 vm: protect PUSHDATA from short reads 
Same thing done in a2a8981979 for PUSHBYTES,
failing to read the amount of bytes specified should lead to FAULT. Also
makes readUint16() and readUint32() panic as this is the behavior we want in
these cases. Add some tests along the way.
 2019-09-11 12:35:37 +03:00
Evgenii
0b58ed4a22 vm: do not fault on LEFT with big index 
Fixes #378.
 2019-09-09 17:29:31 +03:00
Roman Khimov
a039ae6cdb
Merge pull request #374 from nspcc-dev/makefile-and-gofmt 
Makefile convenience targets and gofmt
 2019-09-09 15:05:12 +03:00
Roman Khimov
a2a8981979 vm: fix not failing PUSHBYTES* on short read 
Add some tests also. Fixes #361.
 2019-09-09 12:09:05 +03:00
Roman Khimov
fabd11699a *: gofmt -s 
Appy gofmt for all the source tree.
 2019-09-09 12:02:24 +03:00
Roman Khimov
450063de7d
Merge pull request #362 from nspcc-dev/add-missing-opcodes-into-the-list 
Add missing opcodes into the list
 2019-09-09 11:24:39 +03:00
Roman Khimov
7b0c2781d2 vm: expand instruction list with commands from current VM spec 
Current NEO documentation lists them:
https://docs.neo.org/docs/en-us/tooldev/advanced/neo_vm.html

CALL_* instructions were left out because of conflict with golint (but they're
removed in NEO 3.0 anyway, so wasting time on them makes no sense).

Update autogenerated instruction_string.go accordingly.
 2019-09-08 20:46:35 +03:00
Evgenii
bcc8234155 vm: implement Array <-> Struct conversion 
Reference VM implementation supports convertation from
Struct to Array via NEWARRAY and vice versa.
https://github.com/neo-project/neo-vm/pull/91
 2019-09-08 13:40:21 +03:00
Roman Khimov
aefe572df3 vm: implement UNPACK, REVERSE, REMOVE opcodes 
Also expand makeStackItem() to accept slices of int for testing
convenience. Fixes #195.
 2019-09-06 19:00:34 +03:00
Roman Khimov
b3ed3d24ee vm: implement CAT, SUBSTR, LEFT and RIGHT 
String instruction set.
 2019-09-06 12:41:27 +03:00
Roman Khimov
3f40334979 vm: add generic stub for all unimplemented instructions 2019-09-05 17:35:30 +03:00