Crate pallet_evm_polkavm_uapi

External C API to communicate with substrate contracts runtime module.

Refer to substrate FRAME contract module for more documentation.

Macros

input

Utility macro to read input passed to a contract.

output

Utility macro to invoke a host function that expect a output: &mut &mut [u8] as last argument.

u64_output

Call the host function and convert the [u8; 32] output to u64.

unwrap_output

Similar to output! but unwraps the result.

Structs

CallFlags

Flags used to change the behaviour of seal_call and seal_delegate_call.

ReturnCode

The raw return code returned by the host side.

ReturnFlags

Flags used by a contract to customize exit behaviour.

StorageFlags

Flags used by a contract to customize storage behaviour.

Enums

HostFnImpl

Implements HostFn when compiled on supported architectures (RISC-V).

ReturnErrorCode

Every error that can be returned to a contract when it calls any of the host functions.

Traits

HostFn

Defines all the host apis available to contracts.

Functions

pack_hi_lo

Helper to pack two u32 values into a u64 register.

u256_bytes

Convert a u64 into a [u8; 32].