mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-30 22:11:02 +00:00
Alexander Theißen
c470e9d11d
* Give chain extensions the ability to store some temporary values * Update frame/contracts/src/wasm/runtime.rs Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> * Rename func_id -> id * Replace `id` param by two functions on `env` Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>
47 lines
1.2 KiB
WebAssembly Text Format
47 lines
1.2 KiB
WebAssembly Text Format
;; Call chain extension by passing through input and output of this contract
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(module
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(import "seal0" "seal_call_chain_extension"
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(func $seal_call_chain_extension (param i32 i32 i32 i32 i32) (result i32))
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)
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(import "seal0" "seal_input" (func $seal_input (param i32 i32)))
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(import "seal0" "seal_return" (func $seal_return (param i32 i32 i32)))
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(import "env" "memory" (memory 16 16))
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(func $assert (param i32)
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(block $ok
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(br_if $ok (get_local 0))
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(unreachable)
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)
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)
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;; [0, 4) len of input output
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(data (i32.const 0) "\08")
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;; [4, 12) buffer for input
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;; [12, 48) len of output buffer
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(data (i32.const 12) "\20")
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;; [16, inf) buffer for output
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(func (export "deploy"))
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(func (export "call")
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(call $seal_input (i32.const 4) (i32.const 0))
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;; the chain extension passes through the input and returns it as output
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(call $seal_call_chain_extension
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(i32.load (i32.const 4)) ;; id
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(i32.const 4) ;; input_ptr
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(i32.load (i32.const 0)) ;; input_len
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(i32.const 16) ;; output_ptr
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(i32.const 12) ;; output_len_ptr
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)
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;; the chain extension passes through the id
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(call $assert (i32.eq (i32.load (i32.const 4))))
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(call $seal_return (i32.const 0) (i32.const 16) (i32.load (i32.const 12)))
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)
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)
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