mirror of
https://github.com/logos-storage/plonky2.git
synced 2026-01-14 11:43:12 +00:00
129 lines
3.7 KiB
NASM
129 lines
3.7 KiB
NASM
global sys_extcodehash:
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// stack: kexit_info, address
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SWAP1 %u256_to_addr
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// stack: address, kexit_info
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DUP1 %insert_accessed_addresses
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// stack: cold_access, address, kexit_info
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PUSH @GAS_COLDACCOUNTACCESS_MINUS_WARMACCESS
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MUL
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PUSH @GAS_WARMACCESS
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ADD
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%stack (gas, address, kexit_info) -> (gas, kexit_info, address)
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%charge_gas
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// stack: kexit_info, address
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SWAP1
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DUP1 %is_dead %jumpi(extcodehash_dead)
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%extcodehash
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// stack: hash, kexit_info
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SWAP1
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EXIT_KERNEL
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extcodehash_dead:
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%stack (address, kexit_info) -> (kexit_info, 0)
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EXIT_KERNEL
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global extcodehash:
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// stack: address, retdest
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%mpt_read_state_trie
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// stack: account_ptr, retdest
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DUP1 ISZERO %jumpi(retzero)
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%add_const(3)
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// stack: codehash_ptr, retdest
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%mload_trie_data
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// stack: codehash, retdest
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SWAP1 JUMP
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retzero:
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%stack (account_ptr, retdest) -> (retdest, 0)
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JUMP
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%macro extcodehash
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%stack (address) -> (address, %%after)
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%jump(extcodehash)
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%%after:
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%endmacro
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%macro ext_code_empty
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%extcodehash
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%eq_const(@EMPTY_STRING_HASH)
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%endmacro
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%macro extcodesize
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%stack (address) -> (address, 0, @SEGMENT_KERNEL_ACCOUNT_CODE, %%after)
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%jump(load_code)
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%%after:
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%endmacro
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global sys_extcodesize:
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// stack: kexit_info, address
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SWAP1 %u256_to_addr
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// stack: address, kexit_info
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DUP1 %insert_accessed_addresses
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// stack: cold_access, address, kexit_info
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PUSH @GAS_COLDACCOUNTACCESS_MINUS_WARMACCESS
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MUL
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PUSH @GAS_WARMACCESS
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ADD
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%stack (gas, address, kexit_info) -> (gas, kexit_info, address)
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%charge_gas
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// stack: kexit_info, address
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SWAP1
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// stack: address, kexit_info
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%extcodesize
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// stack: code_size, kexit_info
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SWAP1
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EXIT_KERNEL
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global extcodesize:
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// stack: address, retdest
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%extcodesize
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// stack: extcodesize(address), retdest
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SWAP1 JUMP
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// Loads the code at `address` into memory, at the given context and segment, starting at offset 0.
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// Checks that the hash of the loaded code corresponds to the `codehash` in the state trie.
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// Pre stack: address, ctx, segment, retdest
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// Post stack: code_size
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global load_code:
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%stack (address, ctx, segment, retdest) -> (extcodehash, address, load_code_ctd, ctx, segment, retdest)
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JUMP
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load_code_ctd:
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// stack: codehash, ctx, segment, retdest
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DUP1 ISZERO %jumpi(load_code_non_existent_account)
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PROVER_INPUT(account_code::length)
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// stack: code_size, codehash, ctx, segment, retdest
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PUSH 0
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// Loop non-deterministically querying `code[i]` and storing it in `SEGMENT_KERNEL_ACCOUNT_CODE`
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// at offset `i`, until `i==code_size`.
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load_code_loop:
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// stack: i, code_size, codehash, ctx, segment, retdest
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DUP2 DUP2 EQ
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// stack: i == code_size, i, code_size, codehash, ctx, segment, retdest
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%jumpi(load_code_check)
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PROVER_INPUT(account_code::get)
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// stack: opcode, i, code_size, codehash, ctx, segment, retdest
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DUP2
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// stack: i, opcode, i, code_size, codehash, ctx, segment, retdest
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DUP7 // segment
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DUP7 // context
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MSTORE_GENERAL
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// stack: i, code_size, codehash, ctx, segment, retdest
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%increment
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// stack: i+1, code_size, codehash, ctx, segment, retdest
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%jump(load_code_loop)
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// Check that the hash of the loaded code equals `codehash`.
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load_code_check:
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// stack: i, code_size, codehash, ctx, segment, retdest
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%stack (i, code_size, codehash, ctx, segment, retdest)
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-> (ctx, segment, 0, code_size, codehash, retdest, code_size)
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KECCAK_GENERAL
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// stack: shouldbecodehash, codehash, retdest, code_size
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%assert_eq
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JUMP
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load_code_non_existent_account:
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%stack (codehash, ctx, segment, retdest) -> (retdest, 0)
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JUMP
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