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authorPéter Szilágyi <peterke@gmail.com>2017-08-10 21:39:43 +0800
committerPéter Szilágyi <peterke@gmail.com>2017-08-14 20:27:44 +0800
commit6131dd55c5cb6f964a1b8e8d51400f10d545a92e (patch)
tree3ac0b6667e5e2afbad8f7f5a528bc78f2517e78d /params
parent7bbdf3e2687ea293b68a7f73c039cbde411217fa (diff)
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core/vm: polish precompile contract code, add tests and benches
* Update modexp gas calculation to new version * Fix modexp modulo 0 special case to return zero
Diffstat (limited to 'params')
-rw-r--r--params/protocol_params.go24
1 files changed, 16 insertions, 8 deletions
diff --git a/params/protocol_params.go b/params/protocol_params.go
index f48bf4992..9c84c7d34 100644
--- a/params/protocol_params.go
+++ b/params/protocol_params.go
@@ -31,23 +31,16 @@ const (
SstoreSetGas uint64 = 20000 // Once per SLOAD operation.
LogDataGas uint64 = 8 // Per byte in a LOG* operation's data.
CallStipend uint64 = 2300 // Free gas given at beginning of call.
- EcrecoverGas uint64 = 3000 //
- Sha256WordGas uint64 = 12 //
Sha3Gas uint64 = 30 // Once per SHA3 operation.
- Sha256Gas uint64 = 60 //
- IdentityWordGas uint64 = 3 //
Sha3WordGas uint64 = 6 // Once per word of the SHA3 operation's data.
SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero.
SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change.
SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero.
JumpdestGas uint64 = 1 // Refunded gas, once per SSTORE operation if the zeroness changes to zero.
- IdentityGas uint64 = 15 //
EpochDuration uint64 = 30000 // Duration between proof-of-work epochs.
CallGas uint64 = 40 // Once per CALL operation & message call transaction.
CreateDataGas uint64 = 200 //
- Ripemd160Gas uint64 = 600 //
- Ripemd160WordGas uint64 = 120 //
CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack.
ExpGas uint64 = 10 // Once per EXP instruction
LogGas uint64 = 375 // Per LOG* operation.
@@ -60,7 +53,22 @@ const (
MemoryGas uint64 = 3 // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL.
TxDataNonZeroGas uint64 = 68 // Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions.
- MaxCodeSize = 24576
+ MaxCodeSize = 24576 // Maximum bytecode to permit for a contract
+
+ // Precompiled contract gas prices
+
+ EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price
+ Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation
+ Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation
+ Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation
+ Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation
+ IdentityBaseGas uint64 = 15 // Base price for a data copy operation
+ IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation
+ ModExpQuadCoeffDiv uint64 = 100 // Divisor for the quadratic particle of the big int modular exponentiation
+ Bn256AddGas uint64 = 500 // Gas needed for an elliptic curve addition
+ Bn256ScalarMulGas uint64 = 2000 // Gas needed for an elliptic curve scalar multiplication
+ Bn256PairingBaseGas uint64 = 100000 // Base price for an elliptic curve pairing check
+ Bn256PairingPerPointGas uint64 = 80000 // Per-point price for an elliptic curve pairing check
)
var (