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Return 0 if account doesn't exist

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This commit is contained in:
wborgeaud 2022-11-02 10:37:19 +01:00
parent 7647c5b51b
commit 35c00fa6a7
1 changed files with 10 additions and 5 deletions
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15
evm/src/cpu/kernel/asm/account_code.asm
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@ -1,12 +1,16 @@
%macro extcodehash
// stack: address
retzero:
%stack (account_ptr, retdest) -> (retdest, 0)
JUMP
global extcodehash:
// stack: address, retdest
%mpt_read_state_trie
// stack: account_ptr
DUP1 ISZERO %jumpi(retzero)
%add_const(3)
// stack: codehash_ptr
%mload_trie_data
// stack: codehash
%endmacro
%macro codesize
@ -93,8 +97,9 @@ extcodecopy_end:
// Pre stack: address, retdest
// Post stack: extcodesize(address)
load_code:
// stack: address, retdest
%extcodehash
%stack: (address, retdest) -> (extcodehash, address, load_code_ctd, retdest)
JUMP
load_code_ctd:
// stack: codehash, retdest
PROVER_INPUT(account_code::length)
// stack: code_length, codehash, retdest