vendor/unwinding/src/util.rs

   1 use gimli::{EndianSlice, NativeEndian, Pointer};
   2
   3 pub type StaticSlice = EndianSlice<'static, NativeEndian>;
   4
   5 pub unsafe fn get_unlimited_slice<'a>(start: *const u8) -> &'a [u8] {
   6     // Create the largest possible slice for this address.
   7     let start = start as usize;
   8     let end = start.saturating_add(isize::MAX as _);
   9     let len = end - start;
  10     unsafe { core::slice::from_raw_parts(start as *const _, len) }
  11 }
  12
  13 pub unsafe fn deref_pointer(ptr: Pointer) -> usize {
  14     match ptr {
  15         Pointer::Direct(x) => x as _,
  16         Pointer::Indirect(x) => unsafe { *(x as *const _) },
  17     }
  18 }
  19
  20 #[cfg(feature = "libc")]
  21 pub use libc::c_int;
  22
  23 #[cfg(not(feature = "libc"))]
  24 #[allow(non_camel_case_types)]
  25 pub type c_int = i32;
  26
  27 #[cfg(all(
  28     any(feature = "panic", feature = "panic-handler-dummy"),
  29     feature = "libc"
  30 ))]
  31 pub fn abort() -> ! {
  32     unsafe { libc::abort() };
  33 }
  34
  35 #[cfg(all(
  36     any(feature = "panic", feature = "panic-handler-dummy"),
  37     not(feature = "libc")
  38 ))]
  39 pub fn abort() -> ! {
  40     core::intrinsics::abort();
  41 }