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https://github.com/ethereum/go-ethereum.git
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49 lines
1.6 KiB
Go
49 lines
1.6 KiB
Go
// Copyright 2026 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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//go:build womir
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package main
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import "unsafe"
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// These match the WOMIR guest-io imports (env module).
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// Protocol: __hint_input prepares next item, __hint_buffer reads words.
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// Each item has format: [byte_len_u32_le, ...data_words_padded_to_4bytes]
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//
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//go:wasmimport env __hint_input
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func hintInput()
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//go:wasmimport env __hint_buffer
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func hintBuffer(ptr unsafe.Pointer, numWords uint32)
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func readWord() uint32 {
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var buf [4]byte
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hintBuffer(unsafe.Pointer(&buf[0]), 1)
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return uint32(buf[0]) | uint32(buf[1])<<8 | uint32(buf[2])<<16 | uint32(buf[3])<<24
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}
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func readBytes() []byte {
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hintInput()
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byteLen := readWord()
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numWords := (byteLen + 3) / 4
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data := make([]byte, numWords*4)
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hintBuffer(unsafe.Pointer(&data[0]), numWords)
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return data[:byteLen]
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}
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// getInput reads the RLP-encoded Payload from the WOMIR hint stream.
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func getInput() []byte {
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return readBytes()
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}
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