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issue-739-pointer-wide-bitfield.rs
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issue-739-pointer-wide-bitfield.rs
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/* automatically generated by rust-bindgen */
#![allow(
dead_code,
non_snake_case,
non_camel_case_types,
non_upper_case_globals
)]
#[repr(C)]
#[derive(Copy, Clone, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct __BindgenBitfieldUnit<Storage, Align> {
storage: Storage,
align: [Align; 0],
}
impl<Storage, Align> __BindgenBitfieldUnit<Storage, Align> {
#[inline]
pub const fn new(storage: Storage) -> Self {
Self { storage, align: [] }
}
}
impl<Storage, Align> __BindgenBitfieldUnit<Storage, Align>
where
Storage: AsRef<[u8]> + AsMut<[u8]>,
{
#[inline]
pub fn get_bit(&self, index: usize) -> bool {
debug_assert!(index / 8 < self.storage.as_ref().len());
let byte_index = index / 8;
let byte = self.storage.as_ref()[byte_index];
let bit_index = if cfg!(target_endian = "big") {
7 - (index % 8)
} else {
index % 8
};
let mask = 1 << bit_index;
byte & mask == mask
}
#[inline]
pub fn set_bit(&mut self, index: usize, val: bool) {
debug_assert!(index / 8 < self.storage.as_ref().len());
let byte_index = index / 8;
let byte = &mut self.storage.as_mut()[byte_index];
let bit_index = if cfg!(target_endian = "big") {
7 - (index % 8)
} else {
index % 8
};
let mask = 1 << bit_index;
if val {
*byte |= mask;
} else {
*byte &= !mask;
}
}
#[inline]
pub fn get(&self, bit_offset: usize, bit_width: u8) -> u64 {
debug_assert!(bit_width <= 64);
debug_assert!(bit_offset / 8 < self.storage.as_ref().len());
debug_assert!((bit_offset + (bit_width as usize)) / 8 <= self.storage.as_ref().len());
let mut val = 0;
for i in 0..(bit_width as usize) {
if self.get_bit(i + bit_offset) {
let index = if cfg!(target_endian = "big") {
bit_width as usize - 1 - i
} else {
i
};
val |= 1 << index;
}
}
val
}
#[inline]
pub fn set(&mut self, bit_offset: usize, bit_width: u8, val: u64) {
debug_assert!(bit_width <= 64);
debug_assert!(bit_offset / 8 < self.storage.as_ref().len());
debug_assert!((bit_offset + (bit_width as usize)) / 8 <= self.storage.as_ref().len());
for i in 0..(bit_width as usize) {
let mask = 1 << i;
let val_bit_is_set = val & mask == mask;
let index = if cfg!(target_endian = "big") {
bit_width as usize - 1 - i
} else {
i
};
self.set_bit(index + bit_offset, val_bit_is_set);
}
}
}
#[repr(C)]
#[repr(align(8))]
#[derive(Debug, Default, Copy, Clone)]
pub struct Foo {
pub _bitfield_1: __BindgenBitfieldUnit<[u8; 32usize], u64>,
}
#[test]
fn bindgen_test_layout_Foo() {
assert_eq!(
::std::mem::size_of::<Foo>(),
32usize,
concat!("Size of: ", stringify!(Foo))
);
assert_eq!(
::std::mem::align_of::<Foo>(),
8usize,
concat!("Alignment of ", stringify!(Foo))
);
}
impl Foo {
#[inline]
pub fn m_bitfield(&self) -> ::std::os::raw::c_ulong {
unsafe { ::std::mem::transmute(self._bitfield_1.get(0usize, 64u8) as u64) }
}
#[inline]
pub fn set_m_bitfield(&mut self, val: ::std::os::raw::c_ulong) {
unsafe {
let val: u64 = ::std::mem::transmute(val);
self._bitfield_1.set(0usize, 64u8, val as u64)
}
}
#[inline]
pub fn m_bar(&self) -> ::std::os::raw::c_ulong {
unsafe { ::std::mem::transmute(self._bitfield_1.get(64usize, 64u8) as u64) }
}
#[inline]
pub fn set_m_bar(&mut self, val: ::std::os::raw::c_ulong) {
unsafe {
let val: u64 = ::std::mem::transmute(val);
self._bitfield_1.set(64usize, 64u8, val as u64)
}
}
#[inline]
pub fn foo(&self) -> ::std::os::raw::c_ulong {
unsafe { ::std::mem::transmute(self._bitfield_1.get(128usize, 1u8) as u64) }
}
#[inline]
pub fn set_foo(&mut self, val: ::std::os::raw::c_ulong) {
unsafe {
let val: u64 = ::std::mem::transmute(val);
self._bitfield_1.set(128usize, 1u8, val as u64)
}
}
#[inline]
pub fn bar(&self) -> ::std::os::raw::c_ulong {
unsafe { ::std::mem::transmute(self._bitfield_1.get(192usize, 64u8) as u64) }
}
#[inline]
pub fn set_bar(&mut self, val: ::std::os::raw::c_ulong) {
unsafe {
let val: u64 = ::std::mem::transmute(val);
self._bitfield_1.set(192usize, 64u8, val as u64)
}
}
#[inline]
pub fn new_bitfield_1(
m_bitfield: ::std::os::raw::c_ulong,
m_bar: ::std::os::raw::c_ulong,
foo: ::std::os::raw::c_ulong,
bar: ::std::os::raw::c_ulong,
) -> __BindgenBitfieldUnit<[u8; 32usize], u64> {
let mut __bindgen_bitfield_unit: __BindgenBitfieldUnit<[u8; 32usize], u64> =
Default::default();
__bindgen_bitfield_unit.set(0usize, 64u8, {
let m_bitfield: u64 = unsafe { ::std::mem::transmute(m_bitfield) };
m_bitfield as u64
});
__bindgen_bitfield_unit.set(64usize, 64u8, {
let m_bar: u64 = unsafe { ::std::mem::transmute(m_bar) };
m_bar as u64
});
__bindgen_bitfield_unit.set(128usize, 1u8, {
let foo: u64 = unsafe { ::std::mem::transmute(foo) };
foo as u64
});
__bindgen_bitfield_unit.set(192usize, 64u8, {
let bar: u64 = unsafe { ::std::mem::transmute(bar) };
bar as u64
});
__bindgen_bitfield_unit
}
}