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Replace the global-exports mechanism with a caller-vmctx mechanism. (#789)

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* Replace the global-exports mechanism with a caller-vmctx mechanism.

This eliminates the global exports mechanism, and instead adds a
caller-vmctx argument to wasm functions so that WASI can obtain the
memory and other things from the caller rather than looking them up in a
global registry.

This replaces #390.

* Fixup some merge conflicts

* Rustfmt

* Ensure VMContext is aligned to 16 bytes

With the removal of `global_exports` it "just so happens" that this
isn't happening naturally any more.

* Fixup some bugs with double vmctx in wasmtime crate

* Trampoline stub needed adjusting
* Use pointer type instead of always using I64 for caller vmctx
* Don't store `ir::Signature` in `Func` since we don't know the pointer
  size at creation time.
* Skip the first 2 arguments in IR signatures since that's the two vmctx
  parameters.

* Update cranelift to 0.56.0

* Handle more merge conflicts

* Rustfmt

Co-authored-by: Alex Crichton <alex@alexcrichton.com>
This commit is contained in:
Dan Gohman
2020-01-21 14:50:59 -08:00
committed by GitHub
parent de72435576
commit 9a88d3d894
33 changed files with 362 additions and 330 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
crates/wasi/src/old/snapshot_0/instantiate.rs
View File

@@ -3,8 +3,6 @@ use cranelift_codegen::ir::types;
use cranelift_codegen::{ir, isa};
use cranelift_entity::PrimaryMap;
use cranelift_wasm::DefinedFuncIndex;
use std::cell::RefCell;
use std::collections::HashMap;
use std::fs::File;
use std::rc::Rc;
use target_lexicon::HOST;
@@ -19,15 +17,13 @@ pub fn create_wasi_instance(
argv: &[String],
environ: &[(String, String)],
) -> Result<wasmtime::Instance, InstantiationError> {
let global_exports = store.global_exports().clone();
let wasi = instantiate_wasi(global_exports, preopened_dirs, argv, environ)?;
let wasi = instantiate_wasi(preopened_dirs, argv, environ)?;
let instance = wasmtime::Instance::from_handle(&store, wasi);
Ok(instance)
}
/// Return an instance implementing the "wasi" interface.
pub fn instantiate_wasi(
global_exports: Rc<RefCell<HashMap<String, Option<wasmtime_runtime::Export>>>>,
preopened_dirs: &[(String, File)],
argv: &[String],
environ: &[(String, String)],
@@ -52,14 +48,13 @@ pub fn instantiate_wasi(
let wasi_ctx = wasi_ctx_builder.build().map_err(|err| {
InstantiationError::Resource(format!("couldn't assemble WASI context object: {}", err))
})?;
instantiate_wasi_with_context(global_exports, wasi_ctx)
instantiate_wasi_with_context(wasi_ctx)
}
/// Return an instance implementing the "wasi" interface.
///
/// The wasi context is configured by
pub fn instantiate_wasi_with_context(
global_exports: Rc<RefCell<HashMap<String, Option<wasmtime_runtime::Export>>>>,
wasi_ctx: WasiCtx,
) -> Result<InstanceHandle, InstantiationError> {
let pointer_type = types::Type::triple_pointer_type(&HOST);
@@ -144,7 +139,6 @@ pub fn instantiate_wasi_with_context(
InstanceHandle::new(
Rc::new(module),
global_exports,
finished_functions.into_boxed_slice(),
imports,
&data_initializers,

177
crates/wasi/src/old/snapshot_0/syscalls.rs
View File

@@ -1,7 +1,7 @@
use cranelift_codegen::ir::types::{Type, I32, I64};
use log::{error, trace};
use log::trace;
use wasi_common::old::snapshot_0::{hostcalls, wasi, wasi32, WasiCtx};
use wasmtime_runtime::{Export, VMContext};
use wasmtime_runtime::{InstanceHandle, VMContext};
pub trait AbiRet {
type Abi;
@@ -83,28 +83,28 @@ fn get_wasi_ctx(vmctx: &mut VMContext) -> Result<&mut WasiCtx, wasi::__wasi_errn
}
}
fn get_memory(vmctx: &mut VMContext) -> Result<&mut [u8], wasi::__wasi_errno_t> {
unsafe {
match vmctx.lookup_global_export("memory") {
Some(Export::Memory {
definition,
vmctx: _,
memory: _,
}) => Ok(std::slice::from_raw_parts_mut(
(*definition).base,
(*definition).current_length,
)),
x => {
error!(
"no export named \"memory\", or the export isn't a mem: {:?}",
x
);
Err(wasi::__WASI_ERRNO_INVAL)
}
fn get_memory(caller_vmctx: &mut VMContext) -> Result<&mut [u8], wasi::__wasi_errno_t> {
match unsafe { InstanceHandle::from_vmctx(caller_vmctx) }.lookup("memory") {
Some(wasmtime_runtime::Export::Memory {
definition,
vmctx: _,
memory: _,
}) => unsafe {
let definition = &*definition;
let ptr = definition.base;
let len = definition.current_length;
Ok(std::slice::from_raw_parts_mut(ptr, len))
},
Some(export) => {
log::error!("export named \"memory\" isn't a memory: {:?}", export);
Err(wasi::__WASI_ERRNO_INVAL)
}
None => {
log::error!("no export named \"memory\" available from caller");
Err(wasi::__WASI_ERRNO_INVAL)
}
}
}
macro_rules! ok_or_errno {
($expr:expr) => {
match $expr {
@@ -118,7 +118,11 @@ macro_rules! ok_or_errno {
}
macro_rules! syscalls {
($(pub unsafe extern "C" fn $name:ident($ctx:ident: *mut VMContext $(, $arg:ident: $ty:ty)*,) -> $ret:ty {
($(pub unsafe extern "C" fn $name:ident(
$ctx:ident: *mut VMContext,
$caller_ctx:ident: *mut VMContext
$(, $arg:ident: $ty:ty)*,
) -> $ret:ty {
$($body:tt)*
})*) => ($(
pub mod $name {
@@ -141,20 +145,26 @@ macro_rules! syscalls {
/// NB: ideally we'd expose `shim` below, but it seems like there's
/// a compiler bug which prvents that from being cast to a `usize`.
pub static SHIM: unsafe extern "C" fn(
*mut VMContext,
*mut VMContext,
$(<$ty as AbiParam>::Abi),*
) -> <$ret as AbiRet>::Abi = shim;
unsafe extern "C" fn shim(
$ctx: *mut VMContext,
$caller_ctx: *mut VMContext,
$($arg: <$ty as AbiParam>::Abi,)*
) -> <$ret as AbiRet>::Abi {
let r = super::$name($ctx, $(<$ty as AbiParam>::convert($arg),)*);
let r = super::$name($ctx, $caller_ctx, $(<$ty as AbiParam>::convert($arg),)*);
<$ret as AbiRet>::convert(r)
}
}
pub unsafe extern "C" fn $name($ctx: *mut VMContext, $($arg: $ty,)*) -> $ret {
pub unsafe extern "C" fn $name(
$ctx: *mut VMContext,
$caller_ctx: *mut VMContext,
$($arg: $ty,)*
) -> $ret {
$($body)*
}
)*)
@@ -163,6 +173,7 @@ macro_rules! syscalls {
syscalls! {
pub unsafe extern "C" fn args_get(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
argv: wasi32::uintptr_t,
argv_buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
@@ -172,12 +183,13 @@ syscalls! {
argv_buf,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::args_get(wasi_ctx, memory, argv, argv_buf)
}
pub unsafe extern "C" fn args_sizes_get(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
argc: wasi32::uintptr_t,
argv_buf_size: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
@@ -187,12 +199,13 @@ syscalls! {
argv_buf_size,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::args_sizes_get(wasi_ctx, memory, argc, argv_buf_size)
}
pub unsafe extern "C" fn clock_res_get(
vmctx: *mut VMContext,
_vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
clock_id: wasi::__wasi_clockid_t,
resolution: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
@@ -201,12 +214,13 @@ syscalls! {
clock_id,
resolution,
);
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::clock_res_get(memory, clock_id, resolution)
}
pub unsafe extern "C" fn clock_time_get(
vmctx: *mut VMContext,
_vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
clock_id: wasi::__wasi_clockid_t,
precision: wasi::__wasi_timestamp_t,
time: wasi32::uintptr_t,
@@ -217,12 +231,13 @@ syscalls! {
precision,
time,
);
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::clock_time_get(memory, clock_id, precision, time)
}
pub unsafe extern "C" fn environ_get(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
environ: wasi32::uintptr_t,
environ_buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
@@ -232,12 +247,13 @@ syscalls! {
environ_buf,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::environ_get(wasi_ctx, memory, environ, environ_buf)
}
pub unsafe extern "C" fn environ_sizes_get(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
environ_count: wasi32::uintptr_t,
environ_buf_size: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
@@ -247,35 +263,38 @@ syscalls! {
environ_buf_size,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::environ_sizes_get(wasi_ctx, memory, environ_count, environ_buf_size)
}
pub unsafe extern "C" fn fd_prestat_get(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!("fd_prestat_get(fd={:?}, buf={:#x?})", fd, buf);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_prestat_get(wasi_ctx, memory, fd, buf)
}
pub unsafe extern "C" fn fd_prestat_dir_name(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!("fd_prestat_dir_name(fd={:?}, path={:#x?}, path_len={})", fd, path, path_len);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_prestat_dir_name(wasi_ctx, memory, fd, path, path_len)
}
pub unsafe extern "C" fn fd_close(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
) -> wasi::__wasi_errno_t {
trace!("fd_close(fd={:?})", fd);
@@ -285,6 +304,7 @@ syscalls! {
pub unsafe extern "C" fn fd_datasync(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
) -> wasi::__wasi_errno_t {
trace!("fd_datasync(fd={:?})", fd);
@@ -294,6 +314,7 @@ syscalls! {
pub unsafe extern "C" fn fd_pread(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
iovs: wasi32::uintptr_t,
iovs_len: wasi32::size_t,
@@ -309,7 +330,7 @@ syscalls! {
nread
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_pread(
wasi_ctx,
memory,
@@ -323,6 +344,7 @@ syscalls! {
pub unsafe extern "C" fn fd_pwrite(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
iovs: wasi32::uintptr_t,
iovs_len: wasi32::size_t,
@@ -338,7 +360,7 @@ syscalls! {
nwritten
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_pwrite(
wasi_ctx,
memory,
@@ -352,6 +374,7 @@ syscalls! {
pub unsafe extern "C" fn fd_read(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
iovs: wasi32::uintptr_t,
iovs_len: wasi32::size_t,
@@ -365,12 +388,13 @@ syscalls! {
nread
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_read(wasi_ctx, memory, fd, iovs, iovs_len, nread)
}
pub unsafe extern "C" fn fd_renumber(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
from: wasi::__wasi_fd_t,
to: wasi::__wasi_fd_t,
) -> wasi::__wasi_errno_t {
@@ -381,6 +405,7 @@ syscalls! {
pub unsafe extern "C" fn fd_seek(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
offset: wasi::__wasi_filedelta_t,
whence: wasi::__wasi_whence_t,
@@ -394,34 +419,37 @@ syscalls! {
newoffset
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_seek(wasi_ctx, memory, fd, offset, whence, newoffset)
}
pub unsafe extern "C" fn fd_tell(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
newoffset: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!("fd_tell(fd={:?}, newoffset={:#x?})", fd, newoffset);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_tell(wasi_ctx, memory, fd, newoffset)
}
pub unsafe extern "C" fn fd_fdstat_get(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!("fd_fdstat_get(fd={:?}, buf={:#x?})", fd, buf);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_fdstat_get(wasi_ctx, memory, fd, buf)
}
pub unsafe extern "C" fn fd_fdstat_set_flags(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
flags: wasi::__wasi_fdflags_t,
) -> wasi::__wasi_errno_t {
@@ -436,6 +464,7 @@ syscalls! {
pub unsafe extern "C" fn fd_fdstat_set_rights(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
fs_rights_base: wasi::__wasi_rights_t,
fs_rights_inheriting: wasi::__wasi_rights_t,
@@ -457,6 +486,7 @@ syscalls! {
pub unsafe extern "C" fn fd_sync(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
) -> wasi::__wasi_errno_t {
trace!("fd_sync(fd={:?})", fd);
@@ -466,6 +496,7 @@ syscalls! {
pub unsafe extern "C" fn fd_write(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
iovs: wasi32::uintptr_t,
iovs_len: wasi32::size_t,
@@ -479,12 +510,13 @@ syscalls! {
nwritten
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_write(wasi_ctx, memory, fd, iovs, iovs_len, nwritten)
}
pub unsafe extern "C" fn fd_advise(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
offset: wasi::__wasi_filesize_t,
len: wasi::__wasi_filesize_t,
@@ -503,6 +535,7 @@ syscalls! {
pub unsafe extern "C" fn fd_allocate(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
offset: wasi::__wasi_filesize_t,
len: wasi::__wasi_filesize_t,
@@ -514,6 +547,7 @@ syscalls! {
pub unsafe extern "C" fn path_create_directory(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
@@ -525,12 +559,13 @@ syscalls! {
path_len,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_create_directory(wasi_ctx, memory, fd, path, path_len)
}
pub unsafe extern "C" fn path_link(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd0: wasi::__wasi_fd_t,
flags0: wasi::__wasi_lookupflags_t,
path0: wasi32::uintptr_t,
@@ -550,7 +585,7 @@ syscalls! {
path_len1
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_link(
wasi_ctx,
memory,
@@ -568,6 +603,7 @@ syscalls! {
// the `fd` by reference?
pub unsafe extern "C" fn path_open(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
dirfd: wasi::__wasi_fd_t,
dirflags: wasi::__wasi_lookupflags_t,
path: wasi32::uintptr_t,
@@ -591,7 +627,7 @@ syscalls! {
fd
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_open(
wasi_ctx,
memory,
@@ -609,6 +645,7 @@ syscalls! {
pub unsafe extern "C" fn fd_readdir(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
buf: wasi32::uintptr_t,
buf_len: wasi32::size_t,
@@ -624,7 +661,7 @@ syscalls! {
buf_used,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_readdir(
wasi_ctx,
memory,
@@ -638,6 +675,7 @@ syscalls! {
pub unsafe extern "C" fn path_readlink(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
@@ -655,7 +693,7 @@ syscalls! {
buf_used,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_readlink(
wasi_ctx,
memory,
@@ -670,6 +708,7 @@ syscalls! {
pub unsafe extern "C" fn path_rename(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd0: wasi::__wasi_fd_t,
path0: wasi32::uintptr_t,
path_len0: wasi32::size_t,
@@ -687,7 +726,7 @@ syscalls! {
path_len1,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_rename(
wasi_ctx,
memory,
@@ -702,17 +741,19 @@ syscalls! {
pub unsafe extern "C" fn fd_filestat_get(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
buf: wasi32::uintptr_t,
) -> wasi::__wasi_errno_t {
trace!("fd_filestat_get(fd={:?}, buf={:#x?})", fd, buf);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::fd_filestat_get(wasi_ctx, memory, fd, buf)
}
pub unsafe extern "C" fn fd_filestat_set_times(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
st_atim: wasi::__wasi_timestamp_t,
st_mtim: wasi::__wasi_timestamp_t,
@@ -730,6 +771,7 @@ syscalls! {
pub unsafe extern "C" fn fd_filestat_set_size(
vmctx: *mut VMContext,
_caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
size: wasi::__wasi_filesize_t,
) -> wasi::__wasi_errno_t {
@@ -744,6 +786,7 @@ syscalls! {
pub unsafe extern "C" fn path_filestat_get(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
flags: wasi::__wasi_lookupflags_t,
path: wasi32::uintptr_t,
@@ -759,12 +802,13 @@ syscalls! {
buf
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_filestat_get(wasi_ctx, memory, fd, flags, path, path_len, buf)
}
pub unsafe extern "C" fn path_filestat_set_times(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
flags: wasi::__wasi_lookupflags_t,
path: wasi32::uintptr_t,
@@ -783,7 +827,7 @@ syscalls! {
fstflags
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_filestat_set_times(
wasi_ctx,
memory,
@@ -799,6 +843,7 @@ syscalls! {
pub unsafe extern "C" fn path_symlink(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
path0: wasi32::uintptr_t,
path_len0: wasi32::size_t,
fd: wasi::__wasi_fd_t,
@@ -814,7 +859,7 @@ syscalls! {
path_len1
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_symlink(
wasi_ctx,
memory,
@@ -828,6 +873,7 @@ syscalls! {
pub unsafe extern "C" fn path_unlink_file(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
@@ -839,12 +885,13 @@ syscalls! {
path_len
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_unlink_file(wasi_ctx, memory, fd, path, path_len)
}
pub unsafe extern "C" fn path_remove_directory(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
fd: wasi::__wasi_fd_t,
path: wasi32::uintptr_t,
path_len: wasi32::size_t,
@@ -856,12 +903,13 @@ syscalls! {
path_len
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::path_remove_directory(wasi_ctx, memory, fd, path, path_len)
}
pub unsafe extern "C" fn poll_oneoff(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
in_: wasi32::uintptr_t,
out: wasi32::uintptr_t,
nsubscriptions: wasi32::size_t,
@@ -875,42 +923,45 @@ syscalls! {
nevents,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::poll_oneoff(wasi_ctx, memory, in_, out, nsubscriptions, nevents)
}
pub unsafe extern "C" fn proc_exit(_vmctx: *mut VMContext, rval: u32,) -> () {
pub unsafe extern "C" fn proc_exit(_vmctx: *mut VMContext, _caller_vmctx: *mut VMContext, rval: u32,) -> () {
trace!("proc_exit(rval={:?})", rval);
hostcalls::proc_exit(rval)
}
pub unsafe extern "C" fn proc_raise(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
sig: wasi::__wasi_signal_t,
) -> wasi::__wasi_errno_t {
trace!("proc_raise(sig={:?})", sig);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::proc_raise(wasi_ctx, memory, sig)
}
pub unsafe extern "C" fn random_get(
vmctx: *mut VMContext,
_vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
buf: wasi32::uintptr_t,
buf_len: wasi32::size_t,
) -> wasi::__wasi_errno_t {
trace!("random_get(buf={:#x?}, buf_len={:?})", buf, buf_len);
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::random_get(memory, buf, buf_len)
}
pub unsafe extern "C" fn sched_yield(_vmctx: *mut VMContext,) -> wasi::__wasi_errno_t {
pub unsafe extern "C" fn sched_yield(_vmctx: *mut VMContext, _caller_vmctx: *mut VMContext,) -> wasi::__wasi_errno_t {
trace!("sched_yield(void)");
hostcalls::sched_yield()
}
pub unsafe extern "C" fn sock_recv(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
sock: wasi::__wasi_fd_t,
ri_data: wasi32::uintptr_t,
ri_data_len: wasi32::size_t,
@@ -925,7 +976,7 @@ syscalls! {
ro_datalen, ro_flags
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::sock_recv(
wasi_ctx,
memory,
@@ -940,6 +991,7 @@ syscalls! {
pub unsafe extern "C" fn sock_send(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
sock: wasi::__wasi_fd_t,
si_data: wasi32::uintptr_t,
si_data_len: wasi32::size_t,
@@ -952,7 +1004,7 @@ syscalls! {
si_data, si_data_len, si_flags, so_datalen,
);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::sock_send(
wasi_ctx,
memory,
@@ -966,12 +1018,13 @@ syscalls! {
pub unsafe extern "C" fn sock_shutdown(
vmctx: *mut VMContext,
caller_vmctx: *mut VMContext,
sock: wasi::__wasi_fd_t,
how: wasi::__wasi_sdflags_t,
) -> wasi::__wasi_errno_t {
trace!("sock_shutdown(sock={:?}, how={:?})", sock, how);
let wasi_ctx = ok_or_errno!(get_wasi_ctx(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *vmctx));
let memory = ok_or_errno!(get_memory(&mut *caller_vmctx));
hostcalls::sock_shutdown(wasi_ctx, memory, sock, how)
}
}