fluencelabs/wasmer
1
0
Fork 0
mirror of https://github.com/fluencelabs/wasmer synced 2025-06-20 12:16:30 +00:00
Code Issues Projects Releases Wiki Activity

Fixed lseek

Browse Source
This commit is contained in:
Syrus
2019-06-27 11:14:38 -07:00
parent d4634dfdb9
commit dda438ebd1
1 changed files with 12 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
lib/emscripten/src/syscalls/mod.rs
View File

@ -433,27 +433,31 @@ pub fn ___syscall192(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
}
/// lseek
#[allow(exceeding_bitshifts)]
pub fn ___syscall140(ctx: &mut Ctx, _which: i32, mut varargs: VarArgs) -> i32 {
// -> c_int
debug!("emscripten::___syscall140 (lseek) {}", _which);
let fd: i32 = varargs.get(ctx);
let _ = varargs.get::<i32>(ctx); // ignore high offset
let _offset_high: i32 = varargs.get(ctx);
let offset_low: i32 = varargs.get(ctx);
let result_ptr_value = varargs.get::<i32>(ctx);
let result_ptr_value: i32 = varargs.get(ctx);
let whence: i32 = varargs.get(ctx);
let offset = offset_low as off_t;
let ret = unsafe { lseek(fd, offset, whence) as i32 };
let ret = unsafe { lseek(fd, offset, whence) };
#[allow(clippy::cast_ptr_alignment)]
let result_ptr = emscripten_memory_pointer!(ctx.memory(0), result_ptr_value) as *mut i32;
assert_eq!(8, mem::align_of_val(&result_ptr));
let result_ptr_0 = emscripten_memory_pointer!(ctx.memory(0), result_ptr_value) as *mut i32;
let result_ptr_1 = emscripten_memory_pointer!(ctx.memory(0), result_ptr_value+4) as *mut i32;
assert_eq!(8, mem::align_of_val(&result_ptr_0));
unsafe {
*result_ptr = ret;
// HEAP32[((result)>>2)]=tempI64[0],HEAP32[(((result)+(4))>>2)]=tempI64[1]);
*result_ptr_0 = ret as i32;
*result_ptr_1 = (ret >> 32) as i32;
}
debug!(
"=> fd: {}, offset: {}, result_ptr: {}, whence: {} = {}\nlast os error: {}",
"=> fd: {}, offset: {}, result: {}, whence: {} = {}\nlast os error: {}",
fd,
offset,
result_ptr_value,
ret,
whence,
0,
Error::last_os_error(),