macho_unwind_info/
error.rs

1/// The error type used in this crate.
2#[derive(thiserror::Error, Debug, Clone, Copy, PartialEq, Eq)]
3pub enum Error {
4    /// The data slice was not big enough to read the struct, or we
5    /// were trying to follow an invalid offset to somewhere outside
6    /// of the data bounds.
7    #[error("Read error: {0}")]
8    ReadError(#[from] ReadError),
9
10    /// Each page has a first_address which is supposed to match the
11    /// start address of its first function entry. If the two addresses
12    /// don't match, then the lookup will fail for addresses which fall
13    /// in the gap between the page start address and the page's first
14    /// function's start address.
15    #[error("The page entry's first_address didn't match the address of its first function")]
16    InvalidPageEntryFirstAddress,
17
18    /// The page kind was set to an unrecognized value.
19    #[error("Invalid page kind")]
20    InvalidPageKind,
21
22    /// There is only supposed to be one sentinel page, at the very end
23    /// of the pages list - its first_address gives the end address of
24    /// the unwind info address range. If a sentinel page is encountered
25    /// somewhere else, this error is thrown.
26    #[error("Unexpected sentinel page")]
27    UnexpectedSentinelPage,
28}
29
30/// This error indicates that the data slice was not large enough to
31/// read the respective item.
32#[derive(thiserror::Error, Debug, Clone, Copy, PartialEq, Eq)]
33pub enum ReadError {
34    #[error("Could not read CompactUnwindInfoHeader")]
35    Header,
36
37    #[error("Could not read global opcodes")]
38    GlobalOpcodes,
39
40    #[error("Could not read pages")]
41    Pages,
42
43    #[error("Could not read RegularPage")]
44    RegularPage,
45
46    #[error("Could not read RegularPage functions")]
47    RegularPageFunctions,
48
49    #[error("Could not read CompressedPage")]
50    CompressedPage,
51
52    #[error("Could not read CompressedPage functions")]
53    CompressedPageFunctions,
54
55    #[error("Could not read local opcodes")]
56    LocalOpcodes,
57
58    #[error("Could not read page kind")]
59    PageKind,
60}
macho_unwind_info/error.rs

macho_unwind_info/
error.rs
