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-rw-r--r--vendor/object-0.26.2/src/read/coff/relocation.rs85
1 files changed, 85 insertions, 0 deletions
diff --git a/vendor/object-0.26.2/src/read/coff/relocation.rs b/vendor/object-0.26.2/src/read/coff/relocation.rs
new file mode 100644
index 000000000..e921ed580
--- /dev/null
+++ b/vendor/object-0.26.2/src/read/coff/relocation.rs
@@ -0,0 +1,85 @@
+use alloc::fmt;
+use core::slice;
+
+use crate::endian::LittleEndian as LE;
+use crate::pe;
+use crate::read::{
+ ReadRef, Relocation, RelocationEncoding, RelocationKind, RelocationTarget, SymbolIndex,
+};
+
+use super::CoffFile;
+
+/// An iterator over the relocations in a `CoffSection`.
+pub struct CoffRelocationIterator<'data, 'file, R: ReadRef<'data> = &'data [u8]> {
+ pub(super) file: &'file CoffFile<'data, R>,
+ pub(super) iter: slice::Iter<'data, pe::ImageRelocation>,
+}
+
+impl<'data, 'file, R: ReadRef<'data>> Iterator for CoffRelocationIterator<'data, 'file, R> {
+ type Item = (u64, Relocation);
+
+ fn next(&mut self) -> Option<Self::Item> {
+ self.iter.next().map(|relocation| {
+ let (kind, size, addend) = match self.file.header.machine.get(LE) {
+ pe::IMAGE_FILE_MACHINE_ARMNT => match relocation.typ.get(LE) {
+ pe::IMAGE_REL_ARM_ADDR32 => (RelocationKind::Absolute, 32, 0),
+ pe::IMAGE_REL_ARM_SECREL => (RelocationKind::SectionOffset, 32, 0),
+ typ => (RelocationKind::Coff(typ), 0, 0),
+ },
+ pe::IMAGE_FILE_MACHINE_ARM64 => match relocation.typ.get(LE) {
+ pe::IMAGE_REL_ARM64_ADDR32 => (RelocationKind::Absolute, 32, 0),
+ pe::IMAGE_REL_ARM64_SECREL => (RelocationKind::SectionOffset, 32, 0),
+ pe::IMAGE_REL_ARM64_ADDR64 => (RelocationKind::Absolute, 64, 0),
+ typ => (RelocationKind::Coff(typ), 0, 0),
+ },
+ pe::IMAGE_FILE_MACHINE_I386 => match relocation.typ.get(LE) {
+ pe::IMAGE_REL_I386_DIR16 => (RelocationKind::Absolute, 16, 0),
+ pe::IMAGE_REL_I386_REL16 => (RelocationKind::Relative, 16, 0),
+ pe::IMAGE_REL_I386_DIR32 => (RelocationKind::Absolute, 32, 0),
+ pe::IMAGE_REL_I386_DIR32NB => (RelocationKind::ImageOffset, 32, 0),
+ pe::IMAGE_REL_I386_SECTION => (RelocationKind::SectionIndex, 16, 0),
+ pe::IMAGE_REL_I386_SECREL => (RelocationKind::SectionOffset, 32, 0),
+ pe::IMAGE_REL_I386_SECREL7 => (RelocationKind::SectionOffset, 7, 0),
+ pe::IMAGE_REL_I386_REL32 => (RelocationKind::Relative, 32, -4),
+ typ => (RelocationKind::Coff(typ), 0, 0),
+ },
+ pe::IMAGE_FILE_MACHINE_AMD64 => match relocation.typ.get(LE) {
+ pe::IMAGE_REL_AMD64_ADDR64 => (RelocationKind::Absolute, 64, 0),
+ pe::IMAGE_REL_AMD64_ADDR32 => (RelocationKind::Absolute, 32, 0),
+ pe::IMAGE_REL_AMD64_ADDR32NB => (RelocationKind::ImageOffset, 32, 0),
+ pe::IMAGE_REL_AMD64_REL32 => (RelocationKind::Relative, 32, -4),
+ pe::IMAGE_REL_AMD64_REL32_1 => (RelocationKind::Relative, 32, -5),
+ pe::IMAGE_REL_AMD64_REL32_2 => (RelocationKind::Relative, 32, -6),
+ pe::IMAGE_REL_AMD64_REL32_3 => (RelocationKind::Relative, 32, -7),
+ pe::IMAGE_REL_AMD64_REL32_4 => (RelocationKind::Relative, 32, -8),
+ pe::IMAGE_REL_AMD64_REL32_5 => (RelocationKind::Relative, 32, -9),
+ pe::IMAGE_REL_AMD64_SECTION => (RelocationKind::SectionIndex, 16, 0),
+ pe::IMAGE_REL_AMD64_SECREL => (RelocationKind::SectionOffset, 32, 0),
+ pe::IMAGE_REL_AMD64_SECREL7 => (RelocationKind::SectionOffset, 7, 0),
+ typ => (RelocationKind::Coff(typ), 0, 0),
+ },
+ _ => (RelocationKind::Coff(relocation.typ.get(LE)), 0, 0),
+ };
+ let target = RelocationTarget::Symbol(SymbolIndex(
+ relocation.symbol_table_index.get(LE) as usize,
+ ));
+ (
+ u64::from(relocation.virtual_address.get(LE)),
+ Relocation {
+ kind,
+ encoding: RelocationEncoding::Generic,
+ size,
+ target,
+ addend,
+ implicit_addend: true,
+ },
+ )
+ })
+ }
+}
+
+impl<'data, 'file, R: ReadRef<'data>> fmt::Debug for CoffRelocationIterator<'data, 'file, R> {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ f.debug_struct("CoffRelocationIterator").finish()
+ }
+}