[CORE] Implement Direct Yul Proxy for EVM Precompiles (0x01 - 0x09)

[mijinummi]

Labels: high-difficulty, yul, precompiles, gasguard
Difficulty: High
Module: contracts/precompiles/

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🧠 Concept

Construct a Yul proxy module that formats inputs and handles responses for native EVM precompiled contracts (ecrecover, sha256, modexp, bn256Pairing) with zero memory footprint expansion.

⚠️ Problem

High-level Solidity interactions with precompiled contracts introduce memory padding and type-casting overhead before executing the external precompile call.

📁 Implementation Scope

• contracts/precompiles/PrecompileForwarder.sol
• test/precompiles/PrecompileForwarder.test.ts

🛠️ Requirements

1. Build specific Yul invocations for modexp (0x05) and bn256Pairing (0x08).
2. Write arguments directly into scratch space and invoke via staticcall.
3. Check returned status and copy result back to target execution stack.

🎯 Acceptance Criteria

• Executes cryptographic operations against EVM precompiles with minimal setup gas overhead.
• Unit tests pass across all standard EVM precompile addresses (0x01 through 0x09).

[otobongdev]

@otobongdev has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello Maintainer, I can fix this issue

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[michaelsimeon001]

@michaelsimeon001 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi, can i work on this issue

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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@michaelsimeon001's PR #674 was approved and merged by @mijinummi.

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