Initial reorg.

This is largely the same as #305, but updated for the current tree.

crates/wasi-common/src/hostcalls/misc.rs

@@ -0,0 +1,83 @@
+#![allow(non_camel_case_types)]
+use crate::ctx::WasiCtx;
+use crate::{wasi, wasi32};
+use log::trace;
+
+use wasi_common_cbindgen::wasi_common_cbindgen;
+
+#[wasi_common_cbindgen]
+pub unsafe fn proc_exit(rval: wasi::__wasi_exitcode_t) {
+    trace!("proc_exit(rval={:?})", rval);
+    // TODO: Rather than call std::process::exit here, we should trigger a
+    // stack unwind similar to a trap.
+    std::process::exit(rval as i32);
+}
+
+#[wasi_common_cbindgen]
+pub unsafe fn proc_raise(
+    _wasi_ctx: &WasiCtx,
+    _memory: &mut [u8],
+    _sig: wasi::__wasi_signal_t,
+) -> wasi::__wasi_errno_t {
+    unimplemented!("proc_raise")
+}
+
+hostcalls! {
+    pub unsafe fn args_get(
+        wasi_ctx: &WasiCtx,
+        memory: &mut [u8],
+        argv_ptr: wasi32::uintptr_t,
+        argv_buf: wasi32::uintptr_t,
+    ) -> wasi::__wasi_errno_t;
+
+    pub unsafe fn args_sizes_get(
+        wasi_ctx: &WasiCtx,
+        memory: &mut [u8],
+        argc_ptr: wasi32::uintptr_t,
+        argv_buf_size_ptr: wasi32::uintptr_t,
+    ) -> wasi::__wasi_errno_t;
+
+    pub unsafe fn environ_get(
+        wasi_ctx: &WasiCtx,
+        memory: &mut [u8],
+        environ_ptr: wasi32::uintptr_t,
+        environ_buf: wasi32::uintptr_t,
+    ) -> wasi::__wasi_errno_t;
+
+    pub unsafe fn environ_sizes_get(
+        wasi_ctx: &WasiCtx,
+        memory: &mut [u8],
+        environ_count_ptr: wasi32::uintptr_t,
+        environ_size_ptr: wasi32::uintptr_t,
+    ) -> wasi::__wasi_errno_t;
+
+    pub unsafe fn random_get(
+        memory: &mut [u8],
+        buf_ptr: wasi32::uintptr_t,
+        buf_len: wasi32::size_t,
+    ) -> wasi::__wasi_errno_t;
+
+    pub unsafe fn clock_res_get(
+        memory: &mut [u8],
+        clock_id: wasi::__wasi_clockid_t,
+        resolution_ptr: wasi32::uintptr_t,
+    ) -> wasi::__wasi_errno_t;
+
+    pub unsafe fn clock_time_get(
+        memory: &mut [u8],
+        clock_id: wasi::__wasi_clockid_t,
+        precision: wasi::__wasi_timestamp_t,
+        time_ptr: wasi32::uintptr_t,
+    ) -> wasi::__wasi_errno_t;
+
+    pub unsafe fn poll_oneoff(
+        wasi_ctx: &WasiCtx,
+        memory: &mut [u8],
+        input: wasi32::uintptr_t,
+        output: wasi32::uintptr_t,
+        nsubscriptions: wasi32::size_t,
+        nevents: wasi32::uintptr_t,
+    ) -> wasi::__wasi_errno_t;
+
+    pub unsafe fn sched_yield() -> wasi::__wasi_errno_t;
+}