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Implement PREVRANDAO as if it was DIFFICULTY (#1084)

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wborgeaud 2023-06-08 12:07:48 +02:00 committed by GitHub
parent 0117541909
commit f852984e07
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1 changed files with 3 additions and 2 deletions
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5
evm/src/cpu/kernel/asm/core/syscall_stubs.asm
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@ -9,11 +9,12 @@ global sys_blockhash:
%stack (kexit_info, block_number) -> (kexit_info, 0)
EXIT_KERNEL
// This is a temporary version that returns 0.
// This is a temporary version that returns the block difficulty (i.e. the old version of this opcode).
// TODO: Fix this.
// TODO: What semantics will this have for Edge?
global sys_prevrandao:
// stack: kexit_info
%charge_gas_const(@GAS_BASE)
%stack (kexit_info) -> (kexit_info, 0)
%mload_global_metadata(@GLOBAL_METADATA_BLOCK_DIFFICULTY)
%stack (difficulty, kexit_info) -> (kexit_info, difficulty)
EXIT_KERNEL