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Fixed lseek

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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
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20
lib/emscripten/src/syscalls/mod.rs
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@ -433,27 +433,31 @@ pub fn ___syscall192(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
} }
/// lseek /// lseek
#[allow(exceeding_bitshifts)]
pub fn ___syscall140(ctx: &mut Ctx, _which: i32, mut varargs: VarArgs) -> i32 { pub fn ___syscall140(ctx: &mut Ctx, _which: i32, mut varargs: VarArgs) -> i32 {
// -> c_int // -> c_int
debug!("emscripten::___syscall140 (lseek) {}", _which); debug!("emscripten::___syscall140 (lseek) {}", _which);
let fd: i32 = varargs.get(ctx); 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 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 whence: i32 = varargs.get(ctx);
let offset = offset_low as off_t; 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)] #[allow(clippy::cast_ptr_alignment)]
let result_ptr = emscripten_memory_pointer!(ctx.memory(0), result_ptr_value) as *mut i32; let result_ptr_0 = emscripten_memory_pointer!(ctx.memory(0), result_ptr_value) as *mut i32;
assert_eq!(8, mem::align_of_val(&result_ptr)); 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 { 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!( debug!(
"=> fd: {}, offset: {}, result_ptr: {}, whence: {} = {}\nlast os error: {}", "=> fd: {}, offset: {}, result: {}, whence: {} = {}\nlast os error: {}",
fd, fd,
offset, offset,
result_ptr_value, ret,
whence, whence,
0, 0,
Error::last_os_error(), Error::last_os_error(),