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Nicholas Ward 2023-03-28 12:15:37 -07:00
parent e4f2e864cb
commit 0c87a57f4e
1 changed files with 0 additions and 45 deletions
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45
evm/src/cpu/kernel/asm/bignum/modmul.asm
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@ -113,52 +113,7 @@ modmul_return_2:
%jump(add_bignum)
modmul_return_3:
// stack: carry, len, a_loc, b_loc, s2, s3, retdest
ISZERO
%jumpi(no_carry)
// stack: len, a_loc, b_loc, s2, s3, retdest
DUP4
DUP2
ADD
// stack: cur_loc=s2 + len, len, a_loc, b_loc, s2, s3, retdest
increment_loop:
// stack: cur_loc, len, a_loc, b_loc, s2, s3, retdest
DUP1
%mload_kernel_general
// stack: val, cur_loc, len, a_loc, b_loc, s2, s3, retdest
%increment
DUP1
// stack: val+1, val+1, cur_loc, len, a_loc, b_loc, s2, s3, retdest
%eq_const(@BIGNUM_LIMB_BASE)
DUP1
ISZERO
// stack: val+1!=limb_base, val+1==limb_base, val+1, cur_loc, len, a_loc, b_loc, s2, s3, retdest
SWAP1
SWAP2
// stack: val+1, val+1!=limb_base, val+1==limb_base, cur_loc, len, a_loc, b_loc, s2, s3, retdest
MUL
// stack: to_write=(val+1)*(val+1!=limb_base), continue=val+1==limb_base, cur_loc, len, a_loc, b_loc, s2, s3, retdest
DUP3
// stack: cur_loc, to_write, continue, cur_loc, len, a_loc, b_loc, s2, s3, retdest
%mstore_kernel_general
// stack: continue, cur_loc, len, a_loc, b_loc, s2, s3, retdest
SWAP1
%increment
DUP1
DUP8
// stack: s3, cur_loc + 1, cur_loc + 1, continue, len, a_loc, b_loc, s2, s3, retdest
EQ
ISZERO
// stack: cur_loc + 1 != s3, cur_loc + 1, continue, len, a_loc, b_loc, s2, s3, retdest
SWAP1
SWAP2
// stack: continue, cur_loc + 1 != s3, cur_loc + 1, len, a_loc, b_loc, s2, s3, retdest
MUL
// stack: new_continue=continue*(cur_loc + 1 != s3), cur_loc + 1, len, a_loc, b_loc, s2, s3, retdest
%jumpi(increment_loop)
// stack: cur_loc + 1, len, a_loc, b_loc, s2, s3, retdest
POP
no_carry:
// stack: len, a_loc, b_loc, s2, s3, retdest
// STEP 5: