fix(system-contracts): correct loading of exp to memory in modexp

matter-labs · Oct 9, 2024 · 40d4473 · 40d4473
1 parent e12a3b5
commit 40d4473
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/system-contracts/SystemContractsHashes.json b/system-contracts/SystemContractsHashes.json
@@ -129,8 +129,8 @@
  "contractName": "Modexp",
  "bytecodePath": "contracts-preprocessed/precompiles/artifacts/Modexp.yul.zbin",
  "sourceCodePath": "contracts-preprocessed/precompiles/Modexp.yul",
- "bytecodeHash": "0x010000256ad1144a358b198908db757d778826c181e6e55629319ad2d342fc53",
- "sourceCodeHash": "0xfb4399a7f9c73fb29a3e6319af8edfe330e28fd72e1a35224fcd42d520c26193"
+ "bytecodeHash": "0x01000025e23981181c4edbf5e386f44acc1fd5e63a76148f94f9faab33ebfcf2",
+ "sourceCodeHash": "0x8b76dadc324881a1d1427d7bad1314537e4a278eefd41108742b14a3ea957b82"
  },
  {
  "contractName": "EcAdd",

diff --git a/system-contracts/contracts/precompiles/Modexp.yul b/system-contracts/contracts/precompiles/Modexp.yul
@@ -99,7 +99,7 @@ object "Modexp" {
  // Copy input base, exp and mod from calldata to memory
  calldatacopy(0, 96, baseLen)
  calldatacopy(MAX_BASE_BYTES_SUPPORTED(), add(96, baseLen), expLen)
- calldatacopy(MAX_EXP_BYTES_SUPPORTED(), add(add(96, baseLen), expLen), modLen)
+ calldatacopy(add(MAX_BASE_BYTES_SUPPORTED(), MAX_EXP_BYTES_SUPPORTED()), add(add(96, baseLen), expLen), modLen)
 
  let precompileParams := unsafePackPrecompileParams(
  0, // input offset in words