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-rw-r--r--vendor/object/src/read/xcoff/file.rs629
1 files changed, 629 insertions, 0 deletions
diff --git a/vendor/object/src/read/xcoff/file.rs b/vendor/object/src/read/xcoff/file.rs
new file mode 100644
index 000000000..bac9e7075
--- /dev/null
+++ b/vendor/object/src/read/xcoff/file.rs
@@ -0,0 +1,629 @@
+use core::fmt::Debug;
+use core::mem;
+
+use alloc::vec::Vec;
+
+use crate::read::{self, Error, NoDynamicRelocationIterator, Object, ReadError, ReadRef, Result};
+
+use crate::{
+ xcoff, Architecture, BigEndian as BE, FileFlags, ObjectKind, ObjectSection, Pod, SectionIndex,
+ SymbolIndex,
+};
+
+use super::{
+ CsectAux, FileAux, SectionHeader, SectionTable, Symbol, SymbolTable, XcoffComdat,
+ XcoffComdatIterator, XcoffSection, XcoffSectionIterator, XcoffSegment, XcoffSegmentIterator,
+ XcoffSymbol, XcoffSymbolIterator, XcoffSymbolTable,
+};
+
+/// A 32-bit XCOFF object file.
+pub type XcoffFile32<'data, R = &'data [u8]> = XcoffFile<'data, xcoff::FileHeader32, R>;
+/// A 64-bit XCOFF object file.
+pub type XcoffFile64<'data, R = &'data [u8]> = XcoffFile<'data, xcoff::FileHeader64, R>;
+
+/// A partially parsed XCOFF file.
+///
+/// Most of the functionality of this type is provided by the `Object` trait implementation.
+#[derive(Debug)]
+pub struct XcoffFile<'data, Xcoff, R = &'data [u8]>
+where
+ Xcoff: FileHeader,
+ R: ReadRef<'data>,
+{
+ pub(super) data: R,
+ pub(super) header: &'data Xcoff,
+ pub(super) aux_header: Option<&'data Xcoff::AuxHeader>,
+ pub(super) sections: SectionTable<'data, Xcoff>,
+ pub(super) symbols: SymbolTable<'data, Xcoff, R>,
+}
+
+impl<'data, Xcoff, R> XcoffFile<'data, Xcoff, R>
+where
+ Xcoff: FileHeader,
+ R: ReadRef<'data>,
+{
+ /// Parse the raw XCOFF file data.
+ pub fn parse(data: R) -> Result<Self> {
+ let mut offset = 0;
+ let header = Xcoff::parse(data, &mut offset)?;
+ let aux_header = header.aux_header(data, &mut offset)?;
+ let sections = header.sections(data, &mut offset)?;
+ let symbols = header.symbols(data)?;
+
+ Ok(XcoffFile {
+ data,
+ header,
+ aux_header,
+ sections,
+ symbols,
+ })
+ }
+
+ /// Returns the raw data.
+ pub fn data(&self) -> R {
+ self.data
+ }
+
+ /// Returns the raw XCOFF file header.
+ pub fn raw_header(&self) -> &'data Xcoff {
+ self.header
+ }
+}
+
+impl<'data, Xcoff, R> read::private::Sealed for XcoffFile<'data, Xcoff, R>
+where
+ Xcoff: FileHeader,
+ R: ReadRef<'data>,
+{
+}
+
+impl<'data, 'file, Xcoff, R> Object<'data, 'file> for XcoffFile<'data, Xcoff, R>
+where
+ 'data: 'file,
+ Xcoff: FileHeader,
+ R: 'file + ReadRef<'data>,
+{
+ type Segment = XcoffSegment<'data, 'file, Xcoff, R>;
+ type SegmentIterator = XcoffSegmentIterator<'data, 'file, Xcoff, R>;
+ type Section = XcoffSection<'data, 'file, Xcoff, R>;
+ type SectionIterator = XcoffSectionIterator<'data, 'file, Xcoff, R>;
+ type Comdat = XcoffComdat<'data, 'file, Xcoff, R>;
+ type ComdatIterator = XcoffComdatIterator<'data, 'file, Xcoff, R>;
+ type Symbol = XcoffSymbol<'data, 'file, Xcoff, R>;
+ type SymbolIterator = XcoffSymbolIterator<'data, 'file, Xcoff, R>;
+ type SymbolTable = XcoffSymbolTable<'data, 'file, Xcoff, R>;
+ type DynamicRelocationIterator = NoDynamicRelocationIterator;
+
+ fn architecture(&self) -> crate::Architecture {
+ if self.is_64() {
+ Architecture::PowerPc64
+ } else {
+ Architecture::PowerPc
+ }
+ }
+
+ fn is_little_endian(&self) -> bool {
+ false
+ }
+
+ fn is_64(&self) -> bool {
+ self.header.is_type_64()
+ }
+
+ fn kind(&self) -> ObjectKind {
+ let flags = self.header.f_flags();
+ if flags & xcoff::F_EXEC != 0 {
+ ObjectKind::Executable
+ } else if flags & xcoff::F_SHROBJ != 0 {
+ ObjectKind::Dynamic
+ } else if flags & xcoff::F_RELFLG == 0 {
+ ObjectKind::Relocatable
+ } else {
+ ObjectKind::Unknown
+ }
+ }
+
+ fn segments(&'file self) -> XcoffSegmentIterator<'data, 'file, Xcoff, R> {
+ XcoffSegmentIterator { file: self }
+ }
+
+ fn section_by_name_bytes(
+ &'file self,
+ section_name: &[u8],
+ ) -> Option<XcoffSection<'data, 'file, Xcoff, R>> {
+ self.sections()
+ .find(|section| section.name_bytes() == Ok(section_name))
+ }
+
+ fn section_by_index(
+ &'file self,
+ index: SectionIndex,
+ ) -> Result<XcoffSection<'data, 'file, Xcoff, R>> {
+ let section = self.sections.section(index)?;
+ Ok(XcoffSection {
+ file: self,
+ section,
+ index,
+ })
+ }
+
+ fn sections(&'file self) -> XcoffSectionIterator<'data, 'file, Xcoff, R> {
+ XcoffSectionIterator {
+ file: self,
+ iter: self.sections.iter().enumerate(),
+ }
+ }
+
+ fn comdats(&'file self) -> XcoffComdatIterator<'data, 'file, Xcoff, R> {
+ XcoffComdatIterator { file: self }
+ }
+
+ fn symbol_table(&'file self) -> Option<XcoffSymbolTable<'data, 'file, Xcoff, R>> {
+ if self.symbols.is_empty() {
+ return None;
+ }
+ Some(XcoffSymbolTable {
+ symbols: &self.symbols,
+ file: self,
+ })
+ }
+
+ fn symbol_by_index(
+ &'file self,
+ index: SymbolIndex,
+ ) -> Result<XcoffSymbol<'data, 'file, Xcoff, R>> {
+ let symbol = self.symbols.symbol(index.0)?;
+ Ok(XcoffSymbol {
+ symbols: &self.symbols,
+ index,
+ symbol,
+ file: self,
+ })
+ }
+
+ fn symbols(&'file self) -> XcoffSymbolIterator<'data, 'file, Xcoff, R> {
+ XcoffSymbolIterator {
+ symbols: &self.symbols,
+ index: 0,
+ file: self,
+ }
+ }
+
+ fn dynamic_symbol_table(&'file self) -> Option<XcoffSymbolTable<'data, 'file, Xcoff, R>> {
+ None
+ }
+
+ fn dynamic_symbols(&'file self) -> XcoffSymbolIterator<'data, 'file, Xcoff, R> {
+ // TODO: return the symbols in the STYP_LOADER section.
+ XcoffSymbolIterator {
+ file: self,
+ symbols: &self.symbols,
+ // Hack: don't return any.
+ index: self.symbols.len(),
+ }
+ }
+
+ fn dynamic_relocations(&'file self) -> Option<Self::DynamicRelocationIterator> {
+ // TODO: return the relocations in the STYP_LOADER section.
+ None
+ }
+
+ fn imports(&self) -> Result<alloc::vec::Vec<crate::Import<'data>>> {
+ // TODO: return the imports in the STYP_LOADER section.
+ Ok(Vec::new())
+ }
+
+ fn exports(&self) -> Result<alloc::vec::Vec<crate::Export<'data>>> {
+ // TODO: return the exports in the STYP_LOADER section.
+ Ok(Vec::new())
+ }
+
+ fn has_debug_symbols(&self) -> bool {
+ self.section_by_name(".debug").is_some() || self.section_by_name(".dwinfo").is_some()
+ }
+
+ fn relative_address_base(&'file self) -> u64 {
+ 0
+ }
+
+ fn entry(&'file self) -> u64 {
+ if let Some(aux_header) = self.aux_header {
+ aux_header.o_entry().into()
+ } else {
+ 0
+ }
+ }
+
+ fn flags(&self) -> FileFlags {
+ FileFlags::Xcoff {
+ f_flags: self.header.f_flags(),
+ }
+ }
+}
+
+/// A trait for generic access to `FileHeader32` and `FileHeader64`.
+#[allow(missing_docs)]
+pub trait FileHeader: Debug + Pod {
+ type Word: Into<u64>;
+ type AuxHeader: AuxHeader<Word = Self::Word>;
+ type SectionHeader: SectionHeader<Word = Self::Word>;
+ type Symbol: Symbol<Word = Self::Word>;
+ type FileAux: FileAux;
+ type CsectAux: CsectAux;
+
+ /// Return true if this type is a 64-bit header.
+ fn is_type_64(&self) -> bool;
+
+ fn f_magic(&self) -> u16;
+ fn f_nscns(&self) -> u16;
+ fn f_timdat(&self) -> u32;
+ fn f_symptr(&self) -> Self::Word;
+ fn f_nsyms(&self) -> u32;
+ fn f_opthdr(&self) -> u16;
+ fn f_flags(&self) -> u16;
+
+ // Provided methods.
+
+ /// Read the file header.
+ ///
+ /// Also checks that the magic field in the file header is a supported format.
+ fn parse<'data, R: ReadRef<'data>>(data: R, offset: &mut u64) -> Result<&'data Self> {
+ let header = data
+ .read::<Self>(offset)
+ .read_error("Invalid XCOFF header size or alignment")?;
+ if !header.is_supported() {
+ return Err(Error("Unsupported XCOFF header"));
+ }
+ Ok(header)
+ }
+
+ fn is_supported(&self) -> bool {
+ (self.is_type_64() && self.f_magic() == xcoff::MAGIC_64)
+ || (!self.is_type_64() && self.f_magic() == xcoff::MAGIC_32)
+ }
+
+ /// Read the auxiliary file header.
+ fn aux_header<'data, R: ReadRef<'data>>(
+ &self,
+ data: R,
+ offset: &mut u64,
+ ) -> Result<Option<&'data Self::AuxHeader>> {
+ let aux_header_size = self.f_opthdr();
+ if self.f_flags() & xcoff::F_EXEC == 0 {
+ // No auxiliary header is required for an object file that is not an executable.
+ // TODO: Some AIX programs generate auxiliary headers for 32-bit object files
+ // that end after the data_start field.
+ *offset += u64::from(aux_header_size);
+ return Ok(None);
+ }
+ // Executables, however, must have auxiliary headers that include the
+ // full structure definitions.
+ if aux_header_size != mem::size_of::<Self::AuxHeader>() as u16 {
+ *offset += u64::from(aux_header_size);
+ return Ok(None);
+ }
+ let aux_header = data
+ .read::<Self::AuxHeader>(offset)
+ .read_error("Invalid XCOFF auxiliary header size")?;
+ Ok(Some(aux_header))
+ }
+
+ /// Read the section table.
+ #[inline]
+ fn sections<'data, R: ReadRef<'data>>(
+ &self,
+ data: R,
+ offset: &mut u64,
+ ) -> Result<SectionTable<'data, Self>> {
+ SectionTable::parse(self, data, offset)
+ }
+
+ /// Return the symbol table.
+ #[inline]
+ fn symbols<'data, R: ReadRef<'data>>(&self, data: R) -> Result<SymbolTable<'data, Self, R>> {
+ SymbolTable::parse(*self, data)
+ }
+}
+
+impl FileHeader for xcoff::FileHeader32 {
+ type Word = u32;
+ type AuxHeader = xcoff::AuxHeader32;
+ type SectionHeader = xcoff::SectionHeader32;
+ type Symbol = xcoff::Symbol32;
+ type FileAux = xcoff::FileAux32;
+ type CsectAux = xcoff::CsectAux32;
+
+ fn is_type_64(&self) -> bool {
+ false
+ }
+
+ fn f_magic(&self) -> u16 {
+ self.f_magic.get(BE)
+ }
+
+ fn f_nscns(&self) -> u16 {
+ self.f_nscns.get(BE)
+ }
+
+ fn f_timdat(&self) -> u32 {
+ self.f_timdat.get(BE)
+ }
+
+ fn f_symptr(&self) -> Self::Word {
+ self.f_symptr.get(BE)
+ }
+
+ fn f_nsyms(&self) -> u32 {
+ self.f_nsyms.get(BE)
+ }
+
+ fn f_opthdr(&self) -> u16 {
+ self.f_opthdr.get(BE)
+ }
+
+ fn f_flags(&self) -> u16 {
+ self.f_flags.get(BE)
+ }
+}
+
+impl FileHeader for xcoff::FileHeader64 {
+ type Word = u64;
+ type AuxHeader = xcoff::AuxHeader64;
+ type SectionHeader = xcoff::SectionHeader64;
+ type Symbol = xcoff::Symbol64;
+ type FileAux = xcoff::FileAux64;
+ type CsectAux = xcoff::CsectAux64;
+
+ fn is_type_64(&self) -> bool {
+ true
+ }
+
+ fn f_magic(&self) -> u16 {
+ self.f_magic.get(BE)
+ }
+
+ fn f_nscns(&self) -> u16 {
+ self.f_nscns.get(BE)
+ }
+
+ fn f_timdat(&self) -> u32 {
+ self.f_timdat.get(BE)
+ }
+
+ fn f_symptr(&self) -> Self::Word {
+ self.f_symptr.get(BE)
+ }
+
+ fn f_nsyms(&self) -> u32 {
+ self.f_nsyms.get(BE)
+ }
+
+ fn f_opthdr(&self) -> u16 {
+ self.f_opthdr.get(BE)
+ }
+
+ fn f_flags(&self) -> u16 {
+ self.f_flags.get(BE)
+ }
+}
+
+#[allow(missing_docs)]
+pub trait AuxHeader: Debug + Pod {
+ type Word: Into<u64>;
+
+ fn o_vstamp(&self) -> u16;
+ fn o_tsize(&self) -> Self::Word;
+ fn o_dsize(&self) -> Self::Word;
+ fn o_bsize(&self) -> Self::Word;
+ fn o_entry(&self) -> Self::Word;
+ fn o_text_start(&self) -> Self::Word;
+ fn o_data_start(&self) -> Self::Word;
+ fn o_toc(&self) -> Self::Word;
+ fn o_snentry(&self) -> u16;
+ fn o_sntext(&self) -> u16;
+ fn o_sndata(&self) -> u16;
+ fn o_sntoc(&self) -> u16;
+ fn o_snloader(&self) -> u16;
+ fn o_snbss(&self) -> u16;
+ fn o_sntdata(&self) -> u16;
+ fn o_sntbss(&self) -> u16;
+ fn o_algntext(&self) -> u16;
+ fn o_algndata(&self) -> u16;
+ fn o_maxstack(&self) -> Self::Word;
+ fn o_maxdata(&self) -> Self::Word;
+ fn o_textpsize(&self) -> u8;
+ fn o_datapsize(&self) -> u8;
+ fn o_stackpsize(&self) -> u8;
+}
+
+impl AuxHeader for xcoff::AuxHeader32 {
+ type Word = u32;
+
+ fn o_vstamp(&self) -> u16 {
+ self.o_vstamp.get(BE)
+ }
+
+ fn o_tsize(&self) -> Self::Word {
+ self.o_tsize.get(BE)
+ }
+
+ fn o_dsize(&self) -> Self::Word {
+ self.o_dsize.get(BE)
+ }
+
+ fn o_bsize(&self) -> Self::Word {
+ self.o_bsize.get(BE)
+ }
+
+ fn o_entry(&self) -> Self::Word {
+ self.o_entry.get(BE)
+ }
+
+ fn o_text_start(&self) -> Self::Word {
+ self.o_text_start.get(BE)
+ }
+
+ fn o_data_start(&self) -> Self::Word {
+ self.o_data_start.get(BE)
+ }
+
+ fn o_toc(&self) -> Self::Word {
+ self.o_toc.get(BE)
+ }
+
+ fn o_snentry(&self) -> u16 {
+ self.o_snentry.get(BE)
+ }
+
+ fn o_sntext(&self) -> u16 {
+ self.o_sntext.get(BE)
+ }
+
+ fn o_sndata(&self) -> u16 {
+ self.o_sndata.get(BE)
+ }
+
+ fn o_sntoc(&self) -> u16 {
+ self.o_sntoc.get(BE)
+ }
+
+ fn o_snloader(&self) -> u16 {
+ self.o_snloader.get(BE)
+ }
+
+ fn o_snbss(&self) -> u16 {
+ self.o_snbss.get(BE)
+ }
+
+ fn o_sntdata(&self) -> u16 {
+ self.o_sntdata.get(BE)
+ }
+
+ fn o_sntbss(&self) -> u16 {
+ self.o_sntbss.get(BE)
+ }
+
+ fn o_algntext(&self) -> u16 {
+ self.o_algntext.get(BE)
+ }
+
+ fn o_algndata(&self) -> u16 {
+ self.o_algndata.get(BE)
+ }
+
+ fn o_maxstack(&self) -> Self::Word {
+ self.o_maxstack.get(BE)
+ }
+
+ fn o_maxdata(&self) -> Self::Word {
+ self.o_maxdata.get(BE)
+ }
+
+ fn o_textpsize(&self) -> u8 {
+ self.o_textpsize
+ }
+
+ fn o_datapsize(&self) -> u8 {
+ self.o_datapsize
+ }
+
+ fn o_stackpsize(&self) -> u8 {
+ self.o_stackpsize
+ }
+}
+
+impl AuxHeader for xcoff::AuxHeader64 {
+ type Word = u64;
+
+ fn o_vstamp(&self) -> u16 {
+ self.o_vstamp.get(BE)
+ }
+
+ fn o_tsize(&self) -> Self::Word {
+ self.o_tsize.get(BE)
+ }
+
+ fn o_dsize(&self) -> Self::Word {
+ self.o_dsize.get(BE)
+ }
+
+ fn o_bsize(&self) -> Self::Word {
+ self.o_bsize.get(BE)
+ }
+
+ fn o_entry(&self) -> Self::Word {
+ self.o_entry.get(BE)
+ }
+
+ fn o_text_start(&self) -> Self::Word {
+ self.o_text_start.get(BE)
+ }
+
+ fn o_data_start(&self) -> Self::Word {
+ self.o_data_start.get(BE)
+ }
+
+ fn o_toc(&self) -> Self::Word {
+ self.o_toc.get(BE)
+ }
+
+ fn o_snentry(&self) -> u16 {
+ self.o_snentry.get(BE)
+ }
+
+ fn o_sntext(&self) -> u16 {
+ self.o_sntext.get(BE)
+ }
+
+ fn o_sndata(&self) -> u16 {
+ self.o_sndata.get(BE)
+ }
+
+ fn o_sntoc(&self) -> u16 {
+ self.o_sntoc.get(BE)
+ }
+
+ fn o_snloader(&self) -> u16 {
+ self.o_snloader.get(BE)
+ }
+
+ fn o_snbss(&self) -> u16 {
+ self.o_snbss.get(BE)
+ }
+
+ fn o_sntdata(&self) -> u16 {
+ self.o_sntdata.get(BE)
+ }
+
+ fn o_sntbss(&self) -> u16 {
+ self.o_sntbss.get(BE)
+ }
+
+ fn o_algntext(&self) -> u16 {
+ self.o_algntext.get(BE)
+ }
+
+ fn o_algndata(&self) -> u16 {
+ self.o_algndata.get(BE)
+ }
+
+ fn o_maxstack(&self) -> Self::Word {
+ self.o_maxstack.get(BE)
+ }
+
+ fn o_maxdata(&self) -> Self::Word {
+ self.o_maxdata.get(BE)
+ }
+
+ fn o_textpsize(&self) -> u8 {
+ self.o_textpsize
+ }
+
+ fn o_datapsize(&self) -> u8 {
+ self.o_datapsize
+ }
+
+ fn o_stackpsize(&self) -> u8 {
+ self.o_stackpsize
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-24 22:21:20 +0000