- nim-graphql from v0.2.16 to v0.2.18:
- replace nim-miniz with nim-zlib
- replace unittest with unittest2
- nim-http-utils:
- Fix to handle HTTP response with `<space>CRLF` after response status code.
- nim-json-rpc:
- rename ws to websocket
- nim-websock:
- rename ws to websock
- fix mutual closing bug
- fix compile time error when using chronicles sink:json
- nim-chronicles:
- add isLogFormatUsed, used by nim-websock
Previously max gas refunded was defined as gas_used div 2.
Here we name the constant 2 as MAX_REFUND_QUOTIENT and
change its value to 5.
The new equation will be: gas_used div MAX_REFUND_QUOTIENT
SSTORE_CLEARS_SCHEDULE or FeeSchedule[RefundsClear] in evm
have initial value of 15_000 when introduced by EIP-2200.
EIP-2200 also set new value for SSTORE_RESET_GAS
from 5000 to to 5000 - COLD_SLOAD_COST
Now with EIP-3529, SSTORE_CLEARS_SCHEDULE beecome
SSTORE_RESET_GAS + ACCESS_LIST_STORAGE_KEY_COST
or 5000 - COLD_SLOAD_COST + ACCESS_LIST_STORAGE_KEY_COST
of 5000 - 2100 + 1900 = 4800
This preparation is needed for subsequent
EIPs included in London.
- Add London to Fork enum
- Block number to fork
- Parsing London fork in chain config
- Prepare gas costs table for London
- Prepare EVM opcode dispatcher for London
- Block rewards for London
- Prepare hive script for London
* continue importing rlp blocks
why:
a chain of blocks to be imported might have legit blocks
after rejected blocks
details:
import loop only stops if the import list is exhausted or if there
was a decoding error. this adds another four to the count of successful
no-hive tests.
* verify DAO marked extra data field in block header
why:
was ignored, scores another two no-hive tests
* verify minimum required difficulty in header validator
why:
two more nohive tests to succeed
details:
* subsumed extended header tests under validateKinship() and renamed it
more appropriately validateHeaderAndKinship()
* enhanced readability of p2p/chain.nim
* cleaned up test_blockchain_json.nim
* verify positive gasUsed unless no transactions
why:
solves another to nohive tests
details:
straightened test_blockchain_json chech so there is no unconditional
rejection anymore (based on the input test scenario)
- nim-json-rpc already replace news with nim-ws
- we also remove news from dependency
- we already have include nim-ws as dependency
- new chronos features is needed by nim-ws
* Re-adjust canonical head to parent of block to be inserted
why:
of the failing tests that remain to be solved, 30 of those will succeed
if the canonical database chain head is cleverly adjusted -- yes, it
looks like a hack, indeed.
details:
at the moment, this hack works for the non-hive tests only and is
triggered by a boolean argument passed on to the chain.persistBlocks()
method.
* Use parent instead of canonical head for block to be inserted
why:
side chains need to be inserted typically somewhere before the
canonical head.
details:
the previous _hack_ was unnecessary and removed, it was inspired by
some verification in persistBlocks() which explicitly referenced the
canonical head (which now might or might not refer to the newly inserted
header.)
* remove unnecessary code + comment
- we replace nim-miniz with nim-zlib because nim-ws requires
features not available in miniz
- nim-graphql also switch to nim-zlib
- nim-ws depends on nim-zlib and we need it for upcoming
websocket rpc
why:
some handy features were intended to support the unit test from
the clique/clique_test.go source (the other one is from
clique/snapshot_test.go.)
as this test cannot realistically be implemented without the full
api (includes mining support), it is left as that
Proper nested call functionality is being skipped in this iteration of new EVMC
host code to keep it simpler, to allow testing and architecture to be built
around the less complicated non-nested cases first.
Instead, nested calls use the old `Computation` path, and bypass any
third-party EVM that may be loaded. The results are the same, and mixing
different EVMs in this way is actually permitted in the EVMC specification.
This approach also means third-party EVMs we test don't need to support
precompiles and we don't need to specially handle those cases.
(E.g. "evmone" doesn't support precompiles, just EVM1 opcodes).
(These before/after scope actions are approximately copy-pasted from
`nimbus/vm/evmc_host.nim`, making their detailed behaviour "obviously correct".
Of course they are subject to tests as well. The small stack property of
a3c8a5c3 "EVMC: Small stacks when using EVMC, closes#575 (segfaults)" is
carefully retained.)
Signed-off-by: Jamie Lokier <jamie@shareable.org>
Make the host service `setStorage` calculate the gas refund itself, instead of
depending on EVM internals.
In EVMC, host `setStorage` is responsible for adding the gas refund using the
rules of EIP-1283 (Constantinople), EIP-2200 (Istanbul) or EIP-2929 (Berlin).
It is not obvious that the host must do it from EVMC documentation, but it's
how it has to be. Note, this is very different from the gas _cost_, which the
host does not calculate.
Gas refund doesn't affect computation. It is applied after the whole
transaction is complete, so it can be tracked on the host or EVM side. But
`setStorage` doesn't return enough information for the EVM to calculate the
refund, so the host must do it when `setStorage` is used.
For now, this continues using Nimbus `Computation` just to hold the gas refund,
to fit around existing structures and get new EVMC working. But the host can't
keep using `Computation`, so gas refund will be moved out of it in due course.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
When processing log operations on the EVMC host side, it causes incorrect
`rootHash` results in some tests. This patch fixes the results.
The cause of these results is known: `Computation` is still doing parts of
contract scope entry/exit which need to be moved to the host. For now, as a
temporary workaround, update logs in `Computation` as it did before.
This makes test pass when using Nimbus EVM. (It breaks third-party EVMs when
`LOG*` ops are used, although most other tests pass.)
We can't keep this as it prevents complete host/EVM separation, but it's useful
in the current code, and it's fine to develop other functionality on top.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
When processing self destructs on the EVMC host side, it causes incorrect
`rootHash` results in some tests. This patch fixes the results.
The cause of these results is known: `Computation` is still doing parts of
contract scope entry/exit which need to be moved to the host. For now, as a
temporary workaround, update self destructs in `Computation` as it did before.
This makes test pass when using Nimbus EVM. (It breaks third-party EVMs when
`SELFDESTRUCT` ops are used, although most other tests pass.)
We can't keep this as it prevents complete host/EVM separation, but it's useful
in the current code, and it's fine to develop other functionality on top.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
In the unusual case where log data is zero-length, `data[0].addr` is invalid
and Nim thoughtfully raises `IndexOutOfBounds`, a `Defect` so it's not even
in `CatchableError`.
This is done in the EVMC host services to handle `LOG*` ops, and it made one
of the EVM tests silently fail with no error message. The fix is obvious.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
Show calls from the host into the EVM. Shows the call, `evmc_message` fields,
and `evmc_result` fields when the call returns.
(When `show_tx_calls` is manually set to true.)
Signed-off-by: Jamie Lokier <jamie@shareable.org>
When `show_tx_calls` is manually set to true, show all the calls from the EVM
to the host, including name, arguments and results.
For example this shows each call to `setStorage`, the key, value and storage
result. This output allows the externally-visible activity of an EVM to be
seen, and it's been useful for guessing what went wrong when a test fails.
In theory, if two EVMs show the same activity in this log, they should have the
same effect on account states, gas, etc. and the same final `roothash`
(which is the only value some tests check).
ps. Ideally we'd use `{.push show.}`...`{.pop.}`, just like with `inline`.
But we can't: https://github.com/nim-lang/Nim/issues/12867
Signed-off-by: Jamie Lokier <jamie@shareable.org>
New pragma `{.show.}` on a proc definition turns on tracing for that proc.
Every call to it shows the name, arguments and results, if `show_tx_calls` is
manually set to true. This is to trace calls from EVM to host.
This started as a template which took a block expression, but the closure it
used led to illegal capture errors. It was easier to write a macro.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
The precompile fixture tests (`test_precompiles.nim`) are now incompatible with
ENABLE_EVMC=1, because `noTransfer` does not work with the new EVMC path.
This will start working again after the host/EVM context rework (needed for
other reasons anyway), but for now disable these tests so that other work can
continue.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
1. Send all EVM executions through the EVMC `execute` function.
It leads to the same place in the end as calling `Computation` before, but
`execute` is the API function used by all EVMC implementations, and it is
very explicit what data is passed back and forth.
2. As a consequence this starts using the new `host_services` code from EVM, so
this is a significant change to the paths used for account state processing.
3. Because we will have to remove the `newComputation` call on the host side,
anticipating that the contract code is now saved in `host` instead of being
copied around. As it's saved in `host`, there is no need to pass it
separately to `evmcExecComputation`.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
We'll re-enable endian conversions based on a negotiated run-time option later,
but for now let's remove one complication to testing the new EVMC paths, and
also gain a little performance.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
Even though `evmc_create_nimbus_evm` is called, it fails at link time because
the definition of that function isn't included unless it is pulled in
explicitly.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
This provides the functions a loadable VM must provide for a host to use it.
The main access to a loaded EVM is `evmc_create_nimbus_evm`, and this meant to
be the only exported function the caller starts with.
That provides access to other functions, also defined in this patch, to
configure the EVM and then the key interesting function is `execute`.
`execute` runs a full computation, here using Nimbus EVM `Computation`.
(Note, even though everything is EVMC binary-compatible, there is a small
dependency on `TransactionHost` in `execute` here, which prevents this being
used by a host that is not Nimbus at the moment. It is necessary for some
tests, and will eventually go away.)
Although this provides the VM-side functionality needed by the host, it does
not contain the glue functions for `Computation` to call the host, which are
already part of the Nimbus EVM in `nimbus/vm/evmc_api.nim`.
Signed-off-by: Jamie Lokier <jamie@shareable.org>
KonradStaniec
jangko
Kim De Mey
Jordan Hrycaj
Jamie Lokier