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This commit is contained in:
Nicholas Ward 2023-04-28 06:59:17 -07:00
parent 3b7ad771e0
commit e40b9edb5b
1 changed files with 8 additions and 4 deletions
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12
evm/src/cpu/kernel/asm/core/precompiles/blake2_f.asm
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@ -1,6 +1,6 @@
global precompile_blake2_f:
// stack: address, retdest, new_ctx, (old stack)
%pop2
// stack: retdest, new_ctx, (old stack)
POP
// stack: new_ctx, (old stack)
DUP1
SET_CONTEXT
@ -17,7 +17,7 @@ global precompile_blake2_f:
// stack: calldatasize, blake2_f_contd, kexit_info
DUP1
// stack: calldatasize, calldatasize, blake2_f_contd, kexit_info
%assert_eq_const(213)
%eq_const(213) ISZERO %jumpi(fault_exception)
// stack: calldatasize, blake2_f_contd, kexit_info
%decrement
// stack: flag_addr=212, blake2_f_contd, kexit_info
@ -25,9 +25,13 @@ global precompile_blake2_f:
// stack: flag_addr, flag_addr, blake2_f_contd, kexit_info
PUSH @SEGMENT_CALLDATA
GET_CONTEXT
// stack: ctx, @SEGMENT_CALLDATA, flag_addr, flag_addr size
// stack: ctx, @SEGMENT_CALLDATA, flag_addr, flag_addr, blake2_f_contd, kexit_info
MLOAD_GENERAL
// stack: flag, flag_addr, blake2_f_contd, kexit_info
DUP1
// stack: flag, flag, flag_addr, blake2_f_contd, kexit_info
%lt_const(2) ISZERO %jumpi(fault_exception) // Check flag < 2 (flag = 0 or flag = 1)
// stack: flag, flag_addr, blake2_f_contd, kexit_info
SWAP1
// stack: flag_addr, flag, blake2_f_contd, kexit_info
%sub_const(8)