Implement evm64 opcodes and gasometer

[sorpaas]

No description provided.

[Copilot]

Pull Request Overview

This PR adds support for EVM64 by registering new opcodes and implementing a gasometer, and updates the crate’s dependencies and features.

• Registers EVM64 arithmetic and control flow opcodes in mode_etable (lib.rs)
• Implements eval in gasometer.rs with static and dynamic gas costs
• Updates Cargo.toml to configure primitive-types and disable default features for evm

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
features/evm64/src/lib.rs	Added registrations for new EVM64 opcodes in the table
features/evm64/src/gasometer.rs	Implemented gasometer logic, static cost table, and dynamic EXP cost
features/evm64/Cargo.toml	Configured dependencies and feature flags for EVM64

Comments suppressed due to low confidence (3)

features/evm64/src/gasometer.rs:15

• No unit tests cover the new eval logic in the gasometer, especially the dynamic cost path for EXP. Add tests to verify both static and dynamic gas calculations.

pub fn eval<'config, S, H, Tr>(

features/evm64/src/gasometer.rs:23

• The constant _G_BASE64 is never used. Consider removing it to avoid dead code.

const _G_BASE64: u64 = 1;

features/evm64/Cargo.toml:14

• Disabling default features for evm may omit needed functionality; consider documenting which features are required or validating that all necessary APIs remain available.

evm = { path = "../..", default-features = false }

[Copilot]

[nitpick] Consider adding a doc comment for the try_or_fail macro to explain its intended use and error-flow behavior.

Suggested change

	/// A macro to simplify error handling in the `eval` function.
	///
	/// This macro evaluates an expression and:
	/// - Returns the value if the expression evaluates to `Ok`.
	/// - Exits the current function with `Control::Exit` if the expression evaluates to `Err`.
	///
	/// # Parameters
	/// - `$e`: An expression that evaluates to a `Result`.
	///
	/// # Example
	/// ```
	/// try_or_fail!(some_function_that_returns_result());
	/// ```