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88 lines
1.8 KiB
Markdown
88 lines
1.8 KiB
Markdown
# wasi
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This module provides an implementation of the WebAssembly System Interface.
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## Supported Syscalls
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### wasi_snapshot_preview1
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- [x] args_get
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- [x] args_sizes_get
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- [x] environ_get
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- [x] environ_sizes_get
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- [x] clock_res_get
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- [x] clock_time_get
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- [ ] fd_advise
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- [ ] fd_allocate
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- [x] fd_close
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- [x] fd_datasync
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- [x] fd_fdstat_get
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- [ ] fd_fdstat_set_flags
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- [ ] fd_fdstat_set_rights
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- [x] fd_filestat_get
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- [x] fd_filestat_set_size
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- [x] fd_filestat_set_times
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- [x] fd_pread
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- [x] fd_prestat_get
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- [x] fd_prestat_dir_name
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- [x] fd_pwrite
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- [x] fd_read
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- [x] fd_readdir
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- [x] fd_renumber
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- [x] fd_seek
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- [x] fd_sync
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- [x] fd_tell
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- [x] fd_write
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- [x] path_create_directory
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- [x] path_filestat_get
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- [x] path_filestat_set_times
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- [x] path_link
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- [x] path_open
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- [x] path_readlink
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- [x] path_remove_directory
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- [x] path_rename
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- [x] path_symlink
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- [x] path_unlink_file
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- [x] poll_oneoff
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- [x] proc_exit
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- [ ] proc_raise
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- [ ] sched_yield
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- [x] random_get
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- [ ] sock_recv
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- [ ] sock_send
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- [ ] sock_shutdown
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## Usage
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```typescript
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import Context from "https://deno.land/std@$STD_VERSION/wasi/snapshot_preview1.ts";
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const context = new Context({
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args: Deno.args,
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env: Deno.env.toObject(),
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});
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const binary = await Deno.readFile("path/to/your/module.wasm");
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const module = await WebAssembly.compile(binary);
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const instance = await WebAssembly.instantiate(module, {
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"wasi_snapshot_preview1": context.exports,
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});
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const {
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_start: start,
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_initialize: initialize,
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memory,
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} = instance.exports;
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context.memory = memory as WebAssembly.Memory;
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if (start instanceof Function) {
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start();
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} else if (initialize instanceof Function) {
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initialize();
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} else {
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throw new Error(
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"No '_start' or '_initialize' entry point found in WebAssembly module, make sure to compile with wasm32-wasi as the target.",
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);
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}
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```
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