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Combine stack macros for fewer operations

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Robin Salen 2023-10-21 12:33:09 -04:00
parent 6ca9970a3b
commit 07ffe4f591
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1 changed files with 2 additions and 2 deletions
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evm/src/cpu/kernel/asm/curve/secp256k1/curve_add.asm
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@ -199,13 +199,13 @@ global secp_double:
%jumpi(ec_double_retself)
// Compute lambda = 3/2 * x0^2 / y0
%stack (x, y, retdest) -> (x, x, @SECP_BASE, @SECP_BASE, x, y, retdest)
%stack (x, y, retdest) -> (x, x, @SECP_BASE, @SECP_BASE, x, y, x, y, retdest)
MULMOD
PUSH 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffff7ffffe19 // 3/2 in the base field
MULMOD
DUP3
%moddiv_secp_base
%stack (lambda, x, y, retdest) -> (lambda, x, y, x, y, retdest)
// stack: lambda, x, y, x, y, retdest
%jump(secp_add_valid_points_with_lambda)
// Push the order of the Secp256k1 scalar field.