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Improved lseek assignment

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This commit is contained in:
Syrus
2019-06-27 12:37:29 -07:00
parent 6aa0ba8344
commit 6aec631774
1 changed files with 5 additions and 12 deletions
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17
lib/emscripten/src/syscalls/mod.rs
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@ -50,7 +50,6 @@ use super::env;
use std::cell::Cell;
#[allow(unused_imports)]
use std::io::Error;
use std::mem;
use std::slice;
/// exit
@ -439,20 +438,14 @@ pub fn ___syscall140(ctx: &mut Ctx, _which: i32, mut varargs: VarArgs) -> i32 {
let fd: i32 = varargs.get(ctx);
let _offset_high: i32 = varargs.get(ctx); // We don't use the offset high as emscripten skips it
let offset_low: i32 = varargs.get(ctx);
let result_ptr_value: i32 = varargs.get(ctx);
let result_ptr_value: WasmPtr<i64> = varargs.get(ctx);
let whence: i32 = varargs.get(ctx);
let offset = offset_low as off_t;
let ret = unsafe { lseek(fd, offset, whence) };
#[allow(clippy::cast_ptr_alignment)]
let result_ptr_0 = emscripten_memory_pointer!(ctx.memory(0), result_ptr_value) as *mut i32;
#[allow(clippy::cast_ptr_alignment)]
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 {
// HEAP32[((result)>>2)]=tempI64[0],HEAP32[(((result)+(4))>>2)]=tempI64[1]);
*result_ptr_0 = ret as i32;
*result_ptr_1 = (ret >> 32) as i32;
}
let result_ptr = result_ptr_value.deref(ctx.memory(0)).unwrap();
result_ptr.set(ret);
debug!(
"=> fd: {}, offset: {}, result: {}, whence: {} = {}\nlast os error: {}",
fd,