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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/object/src/write/coff
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/object/src/write/coff')
-rw-r--r--vendor/object/src/write/coff/mod.rs10
-rw-r--r--vendor/object/src/write/coff/object.rs583
-rw-r--r--vendor/object/src/write/coff/writer.rs518
3 files changed, 0 insertions, 1111 deletions
diff --git a/vendor/object/src/write/coff/mod.rs b/vendor/object/src/write/coff/mod.rs
deleted file mode 100644
index 6e0f5ed..0000000
--- a/vendor/object/src/write/coff/mod.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-//! Support for writing COFF files.
-//!
-//! Provides [`Writer`] for low level writing of COFF files.
-//! This is also used to provide COFF support for [`write::Object`](crate::write::Object).
-
-mod object;
-pub use self::object::*;
-
-mod writer;
-pub use writer::*;
diff --git a/vendor/object/src/write/coff/object.rs b/vendor/object/src/write/coff/object.rs
deleted file mode 100644
index 5229665..0000000
--- a/vendor/object/src/write/coff/object.rs
+++ /dev/null
@@ -1,583 +0,0 @@
-use alloc::vec::Vec;
-
-use crate::pe as coff;
-use crate::write::coff::writer;
-use crate::write::util::*;
-use crate::write::*;
-
-#[derive(Default, Clone, Copy)]
-struct SectionOffsets {
- name: writer::Name,
- offset: u32,
- reloc_offset: u32,
- selection: u8,
- associative_section: u32,
-}
-
-#[derive(Default, Clone, Copy)]
-struct SymbolOffsets {
- name: writer::Name,
- index: u32,
- aux_count: u8,
-}
-
-/// Internal format to use for the `.drectve` section containing linker
-/// directives for symbol exports.
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum CoffExportStyle {
- /// MSVC format supported by link.exe and LLD.
- Msvc,
- /// Gnu format supported by GNU LD and LLD.
- Gnu,
-}
-
-impl<'a> Object<'a> {
- pub(crate) fn coff_section_info(
- &self,
- section: StandardSection,
- ) -> (&'static [u8], &'static [u8], SectionKind, SectionFlags) {
- match section {
- StandardSection::Text => (&[], &b".text"[..], SectionKind::Text, SectionFlags::None),
- StandardSection::Data => (&[], &b".data"[..], SectionKind::Data, SectionFlags::None),
- StandardSection::ReadOnlyData
- | StandardSection::ReadOnlyDataWithRel
- | StandardSection::ReadOnlyString => (
- &[],
- &b".rdata"[..],
- SectionKind::ReadOnlyData,
- SectionFlags::None,
- ),
- StandardSection::UninitializedData => (
- &[],
- &b".bss"[..],
- SectionKind::UninitializedData,
- SectionFlags::None,
- ),
- // TLS sections are data sections with a special name.
- StandardSection::Tls => (&[], &b".tls$"[..], SectionKind::Data, SectionFlags::None),
- StandardSection::UninitializedTls => {
- // Unsupported section.
- (&[], &[], SectionKind::UninitializedTls, SectionFlags::None)
- }
- StandardSection::TlsVariables => {
- // Unsupported section.
- (&[], &[], SectionKind::TlsVariables, SectionFlags::None)
- }
- StandardSection::Common => {
- // Unsupported section.
- (&[], &[], SectionKind::Common, SectionFlags::None)
- }
- StandardSection::GnuProperty => {
- // Unsupported section.
- (&[], &[], SectionKind::Note, SectionFlags::None)
- }
- }
- }
-
- pub(crate) fn coff_subsection_name(&self, section: &[u8], value: &[u8]) -> Vec<u8> {
- let mut name = section.to_vec();
- name.push(b'$');
- name.extend_from_slice(value);
- name
- }
-
- pub(crate) fn coff_fixup_relocation(&mut self, relocation: &mut Relocation) -> i64 {
- if relocation.kind == RelocationKind::GotRelative {
- // Use a stub symbol for the relocation instead.
- // This isn't really a GOT, but it's a similar purpose.
- // TODO: need to handle DLL imports differently?
- relocation.kind = RelocationKind::Relative;
- relocation.symbol = self.coff_add_stub_symbol(relocation.symbol);
- } else if relocation.kind == RelocationKind::PltRelative {
- // Windows doesn't need a separate relocation type for
- // references to functions in import libraries.
- // For convenience, treat this the same as Relative.
- relocation.kind = RelocationKind::Relative;
- }
-
- let constant = match self.architecture {
- Architecture::I386 | Architecture::Arm | Architecture::Aarch64 => match relocation.kind
- {
- RelocationKind::Relative => {
- // IMAGE_REL_I386_REL32, IMAGE_REL_ARM_REL32, IMAGE_REL_ARM64_REL32
- relocation.addend + 4
- }
- _ => relocation.addend,
- },
- Architecture::X86_64 => match relocation.kind {
- RelocationKind::Relative => {
- // IMAGE_REL_AMD64_REL32 through to IMAGE_REL_AMD64_REL32_5
- if relocation.addend <= -4 && relocation.addend >= -9 {
- 0
- } else {
- relocation.addend + 4
- }
- }
- _ => relocation.addend,
- },
- _ => unimplemented!(),
- };
- relocation.addend -= constant;
- constant
- }
-
- fn coff_add_stub_symbol(&mut self, symbol_id: SymbolId) -> SymbolId {
- if let Some(stub_id) = self.stub_symbols.get(&symbol_id) {
- return *stub_id;
- }
- let stub_size = self.architecture.address_size().unwrap().bytes();
-
- let name = b".rdata$.refptr".to_vec();
- let section_id = self.add_section(Vec::new(), name, SectionKind::ReadOnlyData);
- let section = self.section_mut(section_id);
- section.set_data(vec![0; stub_size as usize], u64::from(stub_size));
- section.relocations = vec![Relocation {
- offset: 0,
- size: stub_size * 8,
- kind: RelocationKind::Absolute,
- encoding: RelocationEncoding::Generic,
- symbol: symbol_id,
- addend: 0,
- }];
-
- let mut name = b".refptr.".to_vec();
- name.extend_from_slice(&self.symbol(symbol_id).name);
- let stub_id = self.add_raw_symbol(Symbol {
- name,
- value: 0,
- size: u64::from(stub_size),
- kind: SymbolKind::Data,
- scope: SymbolScope::Compilation,
- weak: false,
- section: SymbolSection::Section(section_id),
- flags: SymbolFlags::None,
- });
- self.stub_symbols.insert(symbol_id, stub_id);
-
- stub_id
- }
-
- /// Appends linker directives to the `.drectve` section to tell the linker
- /// to export all symbols with `SymbolScope::Dynamic`.
- ///
- /// This must be called after all symbols have been defined.
- pub fn add_coff_exports(&mut self, style: CoffExportStyle) {
- assert_eq!(self.format, BinaryFormat::Coff);
-
- let mut directives = vec![];
- for symbol in &self.symbols {
- if symbol.scope == SymbolScope::Dynamic {
- match style {
- CoffExportStyle::Msvc => directives.extend(b" /EXPORT:\""),
- CoffExportStyle::Gnu => directives.extend(b" -export:\""),
- }
- directives.extend(&symbol.name);
- directives.extend(b"\"");
- if symbol.kind != SymbolKind::Text {
- match style {
- CoffExportStyle::Msvc => directives.extend(b",DATA"),
- CoffExportStyle::Gnu => directives.extend(b",data"),
- }
- }
- }
- }
- let drectve = self.add_section(vec![], b".drectve".to_vec(), SectionKind::Linker);
- self.append_section_data(drectve, &directives, 1);
- }
-
- pub(crate) fn coff_write(&self, buffer: &mut dyn WritableBuffer) -> Result<()> {
- let mut writer = writer::Writer::new(buffer);
-
- // Add section strings to strtab.
- let mut section_offsets = vec![SectionOffsets::default(); self.sections.len()];
- for (index, section) in self.sections.iter().enumerate() {
- section_offsets[index].name = writer.add_name(&section.name);
- }
-
- // Set COMDAT flags.
- for comdat in &self.comdats {
- let symbol = &self.symbols[comdat.symbol.0];
- let comdat_section = match symbol.section {
- SymbolSection::Section(id) => id.0,
- _ => {
- return Err(Error(format!(
- "unsupported COMDAT symbol `{}` section {:?}",
- symbol.name().unwrap_or(""),
- symbol.section
- )));
- }
- };
- section_offsets[comdat_section].selection = match comdat.kind {
- ComdatKind::NoDuplicates => coff::IMAGE_COMDAT_SELECT_NODUPLICATES,
- ComdatKind::Any => coff::IMAGE_COMDAT_SELECT_ANY,
- ComdatKind::SameSize => coff::IMAGE_COMDAT_SELECT_SAME_SIZE,
- ComdatKind::ExactMatch => coff::IMAGE_COMDAT_SELECT_EXACT_MATCH,
- ComdatKind::Largest => coff::IMAGE_COMDAT_SELECT_LARGEST,
- ComdatKind::Newest => coff::IMAGE_COMDAT_SELECT_NEWEST,
- ComdatKind::Unknown => {
- return Err(Error(format!(
- "unsupported COMDAT symbol `{}` kind {:?}",
- symbol.name().unwrap_or(""),
- comdat.kind
- )));
- }
- };
- for id in &comdat.sections {
- let section = &self.sections[id.0];
- if section.symbol.is_none() {
- return Err(Error(format!(
- "missing symbol for COMDAT section `{}`",
- section.name().unwrap_or(""),
- )));
- }
- if id.0 != comdat_section {
- section_offsets[id.0].selection = coff::IMAGE_COMDAT_SELECT_ASSOCIATIVE;
- section_offsets[id.0].associative_section = comdat_section as u32 + 1;
- }
- }
- }
-
- // Reserve symbol indices and add symbol strings to strtab.
- let mut symbol_offsets = vec![SymbolOffsets::default(); self.symbols.len()];
- for (index, symbol) in self.symbols.iter().enumerate() {
- symbol_offsets[index].index = writer.reserve_symbol_index();
- let mut name = &*symbol.name;
- match symbol.kind {
- SymbolKind::File => {
- // Name goes in auxiliary symbol records.
- symbol_offsets[index].aux_count = writer.reserve_aux_file_name(&symbol.name);
- name = b".file";
- }
- SymbolKind::Section if symbol.section.id().is_some() => {
- symbol_offsets[index].aux_count = writer.reserve_aux_section();
- }
- _ => {}
- };
- symbol_offsets[index].name = writer.add_name(name);
- }
-
- // Reserve file ranges.
- writer.reserve_file_header();
- writer.reserve_section_headers(self.sections.len() as u16);
- for (index, section) in self.sections.iter().enumerate() {
- section_offsets[index].offset = writer.reserve_section(section.data.len());
- section_offsets[index].reloc_offset =
- writer.reserve_relocations(section.relocations.len());
- }
- writer.reserve_symtab_strtab();
-
- // Start writing.
- writer.write_file_header(writer::FileHeader {
- machine: match (self.architecture, self.sub_architecture) {
- (Architecture::Arm, None) => coff::IMAGE_FILE_MACHINE_ARMNT,
- (Architecture::Aarch64, None) => coff::IMAGE_FILE_MACHINE_ARM64,
- (Architecture::Aarch64, Some(SubArchitecture::Arm64EC)) => {
- coff::IMAGE_FILE_MACHINE_ARM64EC
- }
- (Architecture::I386, None) => coff::IMAGE_FILE_MACHINE_I386,
- (Architecture::X86_64, None) => coff::IMAGE_FILE_MACHINE_AMD64,
- _ => {
- return Err(Error(format!(
- "unimplemented architecture {:?} with sub-architecture {:?}",
- self.architecture, self.sub_architecture
- )));
- }
- },
- time_date_stamp: 0,
- characteristics: match self.flags {
- FileFlags::Coff { characteristics } => characteristics,
- _ => 0,
- },
- })?;
-
- // Write section headers.
- for (index, section) in self.sections.iter().enumerate() {
- let mut characteristics = if let SectionFlags::Coff {
- characteristics, ..
- } = section.flags
- {
- characteristics
- } else {
- match section.kind {
- SectionKind::Text => {
- coff::IMAGE_SCN_CNT_CODE
- | coff::IMAGE_SCN_MEM_EXECUTE
- | coff::IMAGE_SCN_MEM_READ
- }
- SectionKind::Data => {
- coff::IMAGE_SCN_CNT_INITIALIZED_DATA
- | coff::IMAGE_SCN_MEM_READ
- | coff::IMAGE_SCN_MEM_WRITE
- }
- SectionKind::UninitializedData => {
- coff::IMAGE_SCN_CNT_UNINITIALIZED_DATA
- | coff::IMAGE_SCN_MEM_READ
- | coff::IMAGE_SCN_MEM_WRITE
- }
- SectionKind::ReadOnlyData
- | SectionKind::ReadOnlyDataWithRel
- | SectionKind::ReadOnlyString => {
- coff::IMAGE_SCN_CNT_INITIALIZED_DATA | coff::IMAGE_SCN_MEM_READ
- }
- SectionKind::Debug | SectionKind::Other | SectionKind::OtherString => {
- coff::IMAGE_SCN_CNT_INITIALIZED_DATA
- | coff::IMAGE_SCN_MEM_READ
- | coff::IMAGE_SCN_MEM_DISCARDABLE
- }
- SectionKind::Linker => coff::IMAGE_SCN_LNK_INFO | coff::IMAGE_SCN_LNK_REMOVE,
- SectionKind::Common
- | SectionKind::Tls
- | SectionKind::UninitializedTls
- | SectionKind::TlsVariables
- | SectionKind::Note
- | SectionKind::Unknown
- | SectionKind::Metadata
- | SectionKind::Elf(_) => {
- return Err(Error(format!(
- "unimplemented section `{}` kind {:?}",
- section.name().unwrap_or(""),
- section.kind
- )));
- }
- }
- };
- if section_offsets[index].selection != 0 {
- characteristics |= coff::IMAGE_SCN_LNK_COMDAT;
- };
- if section.relocations.len() > 0xffff {
- characteristics |= coff::IMAGE_SCN_LNK_NRELOC_OVFL;
- }
- characteristics |= match section.align {
- 1 => coff::IMAGE_SCN_ALIGN_1BYTES,
- 2 => coff::IMAGE_SCN_ALIGN_2BYTES,
- 4 => coff::IMAGE_SCN_ALIGN_4BYTES,
- 8 => coff::IMAGE_SCN_ALIGN_8BYTES,
- 16 => coff::IMAGE_SCN_ALIGN_16BYTES,
- 32 => coff::IMAGE_SCN_ALIGN_32BYTES,
- 64 => coff::IMAGE_SCN_ALIGN_64BYTES,
- 128 => coff::IMAGE_SCN_ALIGN_128BYTES,
- 256 => coff::IMAGE_SCN_ALIGN_256BYTES,
- 512 => coff::IMAGE_SCN_ALIGN_512BYTES,
- 1024 => coff::IMAGE_SCN_ALIGN_1024BYTES,
- 2048 => coff::IMAGE_SCN_ALIGN_2048BYTES,
- 4096 => coff::IMAGE_SCN_ALIGN_4096BYTES,
- 8192 => coff::IMAGE_SCN_ALIGN_8192BYTES,
- _ => {
- return Err(Error(format!(
- "unimplemented section `{}` align {}",
- section.name().unwrap_or(""),
- section.align
- )));
- }
- };
- writer.write_section_header(writer::SectionHeader {
- name: section_offsets[index].name,
- size_of_raw_data: section.size as u32,
- pointer_to_raw_data: section_offsets[index].offset,
- pointer_to_relocations: section_offsets[index].reloc_offset,
- pointer_to_linenumbers: 0,
- number_of_relocations: section.relocations.len() as u32,
- number_of_linenumbers: 0,
- characteristics,
- });
- }
-
- // Write section data and relocations.
- for section in &self.sections {
- writer.write_section(&section.data);
-
- if !section.relocations.is_empty() {
- //debug_assert_eq!(section_offsets[index].reloc_offset, buffer.len());
- writer.write_relocations_count(section.relocations.len());
- for reloc in &section.relocations {
- //assert!(reloc.implicit_addend);
- let typ = match self.architecture {
- Architecture::I386 => match (reloc.kind, reloc.size, reloc.addend) {
- (RelocationKind::Absolute, 16, 0) => coff::IMAGE_REL_I386_DIR16,
- (RelocationKind::Relative, 16, 0) => coff::IMAGE_REL_I386_REL16,
- (RelocationKind::Absolute, 32, 0) => coff::IMAGE_REL_I386_DIR32,
- (RelocationKind::ImageOffset, 32, 0) => coff::IMAGE_REL_I386_DIR32NB,
- (RelocationKind::SectionIndex, 16, 0) => coff::IMAGE_REL_I386_SECTION,
- (RelocationKind::SectionOffset, 32, 0) => coff::IMAGE_REL_I386_SECREL,
- (RelocationKind::SectionOffset, 7, 0) => coff::IMAGE_REL_I386_SECREL7,
- (RelocationKind::Relative, 32, -4) => coff::IMAGE_REL_I386_REL32,
- (RelocationKind::Coff(x), _, _) => x,
- _ => {
- return Err(Error(format!("unimplemented relocation {:?}", reloc)));
- }
- },
- Architecture::X86_64 => match (reloc.kind, reloc.size, reloc.addend) {
- (RelocationKind::Absolute, 64, 0) => coff::IMAGE_REL_AMD64_ADDR64,
- (RelocationKind::Absolute, 32, 0) => coff::IMAGE_REL_AMD64_ADDR32,
- (RelocationKind::ImageOffset, 32, 0) => coff::IMAGE_REL_AMD64_ADDR32NB,
- (RelocationKind::Relative, 32, -4) => coff::IMAGE_REL_AMD64_REL32,
- (RelocationKind::Relative, 32, -5) => coff::IMAGE_REL_AMD64_REL32_1,
- (RelocationKind::Relative, 32, -6) => coff::IMAGE_REL_AMD64_REL32_2,
- (RelocationKind::Relative, 32, -7) => coff::IMAGE_REL_AMD64_REL32_3,
- (RelocationKind::Relative, 32, -8) => coff::IMAGE_REL_AMD64_REL32_4,
- (RelocationKind::Relative, 32, -9) => coff::IMAGE_REL_AMD64_REL32_5,
- (RelocationKind::SectionIndex, 16, 0) => coff::IMAGE_REL_AMD64_SECTION,
- (RelocationKind::SectionOffset, 32, 0) => coff::IMAGE_REL_AMD64_SECREL,
- (RelocationKind::SectionOffset, 7, 0) => coff::IMAGE_REL_AMD64_SECREL7,
- (RelocationKind::Coff(x), _, _) => x,
- _ => {
- return Err(Error(format!("unimplemented relocation {:?}", reloc)));
- }
- },
- Architecture::Arm => match (reloc.kind, reloc.size, reloc.addend) {
- (RelocationKind::Absolute, 32, 0) => coff::IMAGE_REL_ARM_ADDR32,
- (RelocationKind::ImageOffset, 32, 0) => coff::IMAGE_REL_ARM_ADDR32NB,
- (RelocationKind::Relative, 32, -4) => coff::IMAGE_REL_ARM_REL32,
- (RelocationKind::SectionIndex, 16, 0) => coff::IMAGE_REL_ARM_SECTION,
- (RelocationKind::SectionOffset, 32, 0) => coff::IMAGE_REL_ARM_SECREL,
- (RelocationKind::Coff(x), _, _) => x,
- _ => {
- return Err(Error(format!("unimplemented relocation {:?}", reloc)));
- }
- },
- Architecture::Aarch64 => match (reloc.kind, reloc.size, reloc.addend) {
- (RelocationKind::Absolute, 32, 0) => coff::IMAGE_REL_ARM64_ADDR32,
- (RelocationKind::ImageOffset, 32, 0) => coff::IMAGE_REL_ARM64_ADDR32NB,
- (RelocationKind::SectionIndex, 16, 0) => coff::IMAGE_REL_ARM64_SECTION,
- (RelocationKind::SectionOffset, 32, 0) => coff::IMAGE_REL_ARM64_SECREL,
- (RelocationKind::Absolute, 64, 0) => coff::IMAGE_REL_ARM64_ADDR64,
- (RelocationKind::Relative, 32, -4) => coff::IMAGE_REL_ARM64_REL32,
- (RelocationKind::Coff(x), _, _) => x,
- _ => {
- return Err(Error(format!("unimplemented relocation {:?}", reloc)));
- }
- },
- _ => {
- return Err(Error(format!(
- "unimplemented architecture {:?}",
- self.architecture
- )));
- }
- };
- writer.write_relocation(writer::Relocation {
- virtual_address: reloc.offset as u32,
- symbol: symbol_offsets[reloc.symbol.0].index,
- typ,
- });
- }
- }
- }
-
- // Write symbols.
- for (index, symbol) in self.symbols.iter().enumerate() {
- let section_number = match symbol.section {
- SymbolSection::None => {
- debug_assert_eq!(symbol.kind, SymbolKind::File);
- coff::IMAGE_SYM_DEBUG as u16
- }
- SymbolSection::Undefined => coff::IMAGE_SYM_UNDEFINED as u16,
- SymbolSection::Absolute => coff::IMAGE_SYM_ABSOLUTE as u16,
- SymbolSection::Common => coff::IMAGE_SYM_UNDEFINED as u16,
- SymbolSection::Section(id) => id.0 as u16 + 1,
- };
- let typ = if symbol.kind == SymbolKind::Text {
- coff::IMAGE_SYM_DTYPE_FUNCTION << coff::IMAGE_SYM_DTYPE_SHIFT
- } else {
- coff::IMAGE_SYM_TYPE_NULL
- };
- let storage_class = match symbol.kind {
- SymbolKind::File => coff::IMAGE_SYM_CLASS_FILE,
- SymbolKind::Section => {
- if symbol.section.id().is_some() {
- coff::IMAGE_SYM_CLASS_STATIC
- } else {
- coff::IMAGE_SYM_CLASS_SECTION
- }
- }
- SymbolKind::Label => coff::IMAGE_SYM_CLASS_LABEL,
- SymbolKind::Text | SymbolKind::Data | SymbolKind::Tls => {
- match symbol.section {
- SymbolSection::None => {
- return Err(Error(format!(
- "missing section for symbol `{}`",
- symbol.name().unwrap_or("")
- )));
- }
- SymbolSection::Undefined | SymbolSection::Common => {
- coff::IMAGE_SYM_CLASS_EXTERNAL
- }
- SymbolSection::Absolute | SymbolSection::Section(_) => {
- match symbol.scope {
- // TODO: does this need aux symbol records too?
- _ if symbol.weak => coff::IMAGE_SYM_CLASS_WEAK_EXTERNAL,
- SymbolScope::Unknown => {
- return Err(Error(format!(
- "unimplemented symbol `{}` scope {:?}",
- symbol.name().unwrap_or(""),
- symbol.scope
- )));
- }
- SymbolScope::Compilation => coff::IMAGE_SYM_CLASS_STATIC,
- SymbolScope::Linkage | SymbolScope::Dynamic => {
- coff::IMAGE_SYM_CLASS_EXTERNAL
- }
- }
- }
- }
- }
- SymbolKind::Unknown | SymbolKind::Null => {
- return Err(Error(format!(
- "unimplemented symbol `{}` kind {:?}",
- symbol.name().unwrap_or(""),
- symbol.kind
- )));
- }
- };
- let number_of_aux_symbols = symbol_offsets[index].aux_count;
- let value = if symbol.section == SymbolSection::Common {
- symbol.size as u32
- } else {
- symbol.value as u32
- };
- writer.write_symbol(writer::Symbol {
- name: symbol_offsets[index].name,
- value,
- section_number,
- typ,
- storage_class,
- number_of_aux_symbols,
- });
-
- // Write auxiliary symbols.
- match symbol.kind {
- SymbolKind::File => {
- writer.write_aux_file_name(&symbol.name, number_of_aux_symbols);
- }
- SymbolKind::Section if symbol.section.id().is_some() => {
- debug_assert_eq!(number_of_aux_symbols, 1);
- let section_index = symbol.section.id().unwrap().0;
- let section = &self.sections[section_index];
- writer.write_aux_section(writer::AuxSymbolSection {
- length: section.size as u32,
- number_of_relocations: section.relocations.len() as u32,
- number_of_linenumbers: 0,
- check_sum: checksum(section.data()),
- number: section_offsets[section_index].associative_section,
- selection: section_offsets[section_index].selection,
- });
- }
- _ => {
- debug_assert_eq!(number_of_aux_symbols, 0);
- }
- }
- }
-
- writer.write_strtab();
-
- debug_assert_eq!(writer.reserved_len(), writer.len());
-
- Ok(())
- }
-}
-
-// JamCRC
-fn checksum(data: &[u8]) -> u32 {
- let mut hasher = crc32fast::Hasher::new_with_initial(0xffff_ffff);
- hasher.update(data);
- !hasher.finalize()
-}
diff --git a/vendor/object/src/write/coff/writer.rs b/vendor/object/src/write/coff/writer.rs
deleted file mode 100644
index 8c7ada3..0000000
--- a/vendor/object/src/write/coff/writer.rs
+++ /dev/null
@@ -1,518 +0,0 @@
-//! Helper for writing COFF files.
-use alloc::string::String;
-use alloc::vec::Vec;
-use core::mem;
-
-use crate::endian::{LittleEndian as LE, U16Bytes, U32Bytes, U16, U32};
-use crate::pe;
-use crate::write::string::{StringId, StringTable};
-use crate::write::util;
-use crate::write::{Error, Result, WritableBuffer};
-
-/// A helper for writing COFF files.
-///
-/// Writing uses a two phase approach. The first phase builds up all of the information
-/// that may need to be known ahead of time:
-/// - build string table
-/// - reserve section indices
-/// - reserve symbol indices
-/// - reserve file ranges for headers and sections
-///
-/// Some of the information has ordering requirements. For example, strings must be added
-/// to the string table before reserving the file range for the string table. There are debug
-/// asserts to check some of these requirements.
-///
-/// The second phase writes everything out in order. Thus the caller must ensure writing
-/// is in the same order that file ranges were reserved. There are debug asserts to assist
-/// with checking this.
-#[allow(missing_debug_implementations)]
-pub struct Writer<'a> {
- buffer: &'a mut dyn WritableBuffer,
- len: usize,
-
- section_num: u16,
-
- symtab_offset: u32,
- symtab_num: u32,
-
- strtab: StringTable<'a>,
- strtab_len: usize,
- strtab_offset: u32,
- strtab_data: Vec<u8>,
-}
-
-impl<'a> Writer<'a> {
- /// Create a new `Writer`.
- pub fn new(buffer: &'a mut dyn WritableBuffer) -> Self {
- Writer {
- buffer,
- len: 0,
-
- section_num: 0,
-
- symtab_offset: 0,
- symtab_num: 0,
-
- strtab: StringTable::default(),
- strtab_len: 0,
- strtab_offset: 0,
- strtab_data: Vec::new(),
- }
- }
-
- /// Return the current file length that has been reserved.
- pub fn reserved_len(&self) -> usize {
- self.len
- }
-
- /// Return the current file length that has been written.
- #[allow(clippy::len_without_is_empty)]
- pub fn len(&self) -> usize {
- self.buffer.len()
- }
-
- /// Reserve a file range with the given size and starting alignment.
- ///
- /// Returns the aligned offset of the start of the range.
- pub fn reserve(&mut self, len: usize, align_start: usize) -> u32 {
- if align_start > 1 {
- self.len = util::align(self.len, align_start);
- }
- let offset = self.len;
- self.len += len;
- offset as u32
- }
-
- /// Write alignment padding bytes.
- pub fn write_align(&mut self, align_start: usize) {
- if align_start > 1 {
- util::write_align(self.buffer, align_start);
- }
- }
-
- /// Write data.
- pub fn write(&mut self, data: &[u8]) {
- self.buffer.write_bytes(data);
- }
-
- /// Reserve the file range up to the given file offset.
- pub fn reserve_until(&mut self, offset: usize) {
- debug_assert!(self.len <= offset);
- self.len = offset;
- }
-
- /// Write padding up to the given file offset.
- pub fn pad_until(&mut self, offset: usize) {
- debug_assert!(self.buffer.len() <= offset);
- self.buffer.resize(offset);
- }
-
- /// Reserve the range for the file header.
- ///
- /// This must be at the start of the file.
- pub fn reserve_file_header(&mut self) {
- debug_assert_eq!(self.len, 0);
- self.reserve(mem::size_of::<pe::ImageFileHeader>(), 1);
- }
-
- /// Write the file header.
- ///
- /// This must be at the start of the file.
- ///
- /// Fields that can be derived from known information are automatically set by this function.
- pub fn write_file_header(&mut self, header: FileHeader) -> Result<()> {
- debug_assert_eq!(self.buffer.len(), 0);
-
- // Start writing.
- self.buffer
- .reserve(self.len)
- .map_err(|_| Error(String::from("Cannot allocate buffer")))?;
-
- // Write file header.
- let header = pe::ImageFileHeader {
- machine: U16::new(LE, header.machine),
- number_of_sections: U16::new(LE, self.section_num),
- time_date_stamp: U32::new(LE, header.time_date_stamp),
- pointer_to_symbol_table: U32::new(LE, self.symtab_offset),
- number_of_symbols: U32::new(LE, self.symtab_num),
- size_of_optional_header: U16::default(),
- characteristics: U16::new(LE, header.characteristics),
- };
- self.buffer.write(&header);
-
- Ok(())
- }
-
- /// Reserve the range for the section headers.
- pub fn reserve_section_headers(&mut self, section_num: u16) {
- debug_assert_eq!(self.section_num, 0);
- self.section_num = section_num;
- self.reserve(
- section_num as usize * mem::size_of::<pe::ImageSectionHeader>(),
- 1,
- );
- }
-
- /// Write a section header.
- pub fn write_section_header(&mut self, section: SectionHeader) {
- let mut coff_section = pe::ImageSectionHeader {
- name: [0; 8],
- virtual_size: U32::default(),
- virtual_address: U32::default(),
- size_of_raw_data: U32::new(LE, section.size_of_raw_data),
- pointer_to_raw_data: U32::new(LE, section.pointer_to_raw_data),
- pointer_to_relocations: U32::new(LE, section.pointer_to_relocations),
- pointer_to_linenumbers: U32::new(LE, section.pointer_to_linenumbers),
- number_of_relocations: if section.number_of_relocations > 0xffff {
- U16::new(LE, 0xffff)
- } else {
- U16::new(LE, section.number_of_relocations as u16)
- },
- number_of_linenumbers: U16::default(),
- characteristics: U32::new(LE, section.characteristics),
- };
- match section.name {
- Name::Short(name) => coff_section.name = name,
- Name::Long(str_id) => {
- let mut str_offset = self.strtab.get_offset(str_id);
- if str_offset <= 9_999_999 {
- let mut name = [0; 7];
- let mut len = 0;
- if str_offset == 0 {
- name[6] = b'0';
- len = 1;
- } else {
- while str_offset != 0 {
- let rem = (str_offset % 10) as u8;
- str_offset /= 10;
- name[6 - len] = b'0' + rem;
- len += 1;
- }
- }
- coff_section.name = [0; 8];
- coff_section.name[0] = b'/';
- coff_section.name[1..][..len].copy_from_slice(&name[7 - len..]);
- } else {
- debug_assert!(str_offset as u64 <= 0xf_ffff_ffff);
- coff_section.name[0] = b'/';
- coff_section.name[1] = b'/';
- for i in 0..6 {
- let rem = (str_offset % 64) as u8;
- str_offset /= 64;
- let c = match rem {
- 0..=25 => b'A' + rem,
- 26..=51 => b'a' + rem - 26,
- 52..=61 => b'0' + rem - 52,
- 62 => b'+',
- 63 => b'/',
- _ => unreachable!(),
- };
- coff_section.name[7 - i] = c;
- }
- }
- }
- }
- self.buffer.write(&coff_section);
- }
-
- /// Reserve the range for the section data.
- ///
- /// Returns the aligned offset of the start of the range.
- /// Does nothing and returns 0 if the length is zero.
- pub fn reserve_section(&mut self, len: usize) -> u32 {
- if len == 0 {
- return 0;
- }
- // TODO: not sure what alignment is required here, but this seems to match LLVM
- self.reserve(len, 4)
- }
-
- /// Write the alignment bytes prior to section data.
- ///
- /// This is unneeded if you are using `write_section` or `write_section_zeroes`
- /// for the data.
- pub fn write_section_align(&mut self) {
- util::write_align(self.buffer, 4);
- }
-
- /// Write the section data.
- ///
- /// Writes alignment bytes prior to the data.
- /// Does nothing if the data is empty.
- pub fn write_section(&mut self, data: &[u8]) {
- if data.is_empty() {
- return;
- }
- self.write_section_align();
- self.buffer.write_bytes(data);
- }
-
- /// Write the section data using zero bytes.
- ///
- /// Writes alignment bytes prior to the data.
- /// Does nothing if the length is zero.
- pub fn write_section_zeroes(&mut self, len: usize) {
- if len == 0 {
- return;
- }
- self.write_section_align();
- self.buffer.resize(self.buffer.len() + len);
- }
-
- /// Reserve a file range for the given number of relocations.
- ///
- /// This will automatically reserve an extra relocation if there are more than 0xffff.
- ///
- /// Returns the offset of the range.
- /// Does nothing and returns 0 if the count is zero.
- pub fn reserve_relocations(&mut self, mut count: usize) -> u32 {
- if count == 0 {
- return 0;
- }
- if count > 0xffff {
- count += 1;
- }
- self.reserve(count * mem::size_of::<pe::ImageRelocation>(), 1)
- }
-
- /// Write a relocation containing the count if required.
- ///
- /// This should be called before writing the first relocation for a section.
- pub fn write_relocations_count(&mut self, count: usize) {
- if count > 0xffff {
- let coff_relocation = pe::ImageRelocation {
- virtual_address: U32Bytes::new(LE, count as u32 + 1),
- symbol_table_index: U32Bytes::new(LE, 0),
- typ: U16Bytes::new(LE, 0),
- };
- self.buffer.write(&coff_relocation);
- }
- }
-
- /// Write a relocation.
- pub fn write_relocation(&mut self, reloc: Relocation) {
- let coff_relocation = pe::ImageRelocation {
- virtual_address: U32Bytes::new(LE, reloc.virtual_address),
- symbol_table_index: U32Bytes::new(LE, reloc.symbol),
- typ: U16Bytes::new(LE, reloc.typ),
- };
- self.buffer.write(&coff_relocation);
- }
-
- /// Reserve a symbol table entry.
- ///
- /// This must be called before [`Self::reserve_symtab_strtab`].
- pub fn reserve_symbol_index(&mut self) -> u32 {
- debug_assert_eq!(self.symtab_offset, 0);
- let index = self.symtab_num;
- self.symtab_num += 1;
- index
- }
-
- /// Reserve a number of symbol table entries.
- pub fn reserve_symbol_indices(&mut self, count: u32) {
- debug_assert_eq!(self.symtab_offset, 0);
- self.symtab_num += count;
- }
-
- /// Write a symbol table entry.
- pub fn write_symbol(&mut self, symbol: Symbol) {
- let mut coff_symbol = pe::ImageSymbol {
- name: [0; 8],
- value: U32Bytes::new(LE, symbol.value),
- section_number: U16Bytes::new(LE, symbol.section_number),
- typ: U16Bytes::new(LE, symbol.typ),
- storage_class: symbol.storage_class,
- number_of_aux_symbols: symbol.number_of_aux_symbols,
- };
- match symbol.name {
- Name::Short(name) => coff_symbol.name = name,
- Name::Long(str_id) => {
- let str_offset = self.strtab.get_offset(str_id);
- coff_symbol.name[4..8].copy_from_slice(&u32::to_le_bytes(str_offset as u32));
- }
- }
- self.buffer.write(&coff_symbol);
- }
-
- /// Reserve auxiliary symbols for a file name.
- ///
- /// Returns the number of auxiliary symbols required.
- ///
- /// This must be called before [`Self::reserve_symtab_strtab`].
- pub fn reserve_aux_file_name(&mut self, name: &[u8]) -> u8 {
- debug_assert_eq!(self.symtab_offset, 0);
- let aux_count = (name.len() + pe::IMAGE_SIZEOF_SYMBOL - 1) / pe::IMAGE_SIZEOF_SYMBOL;
- self.symtab_num += aux_count as u32;
- aux_count as u8
- }
-
- /// Write auxiliary symbols for a file name.
- pub fn write_aux_file_name(&mut self, name: &[u8], aux_count: u8) {
- let aux_len = aux_count as usize * pe::IMAGE_SIZEOF_SYMBOL;
- debug_assert!(aux_len >= name.len());
- let old_len = self.buffer.len();
- self.buffer.write_bytes(name);
- self.buffer.resize(old_len + aux_len);
- }
-
- /// Reserve an auxiliary symbol for a section.
- ///
- /// Returns the number of auxiliary symbols required.
- ///
- /// This must be called before [`Self::reserve_symtab_strtab`].
- pub fn reserve_aux_section(&mut self) -> u8 {
- debug_assert_eq!(self.symtab_offset, 0);
- self.symtab_num += 1;
- 1
- }
-
- /// Write an auxiliary symbol for a section.
- pub fn write_aux_section(&mut self, section: AuxSymbolSection) {
- let aux = pe::ImageAuxSymbolSection {
- length: U32Bytes::new(LE, section.length),
- number_of_relocations: if section.number_of_relocations > 0xffff {
- U16Bytes::new(LE, 0xffff)
- } else {
- U16Bytes::new(LE, section.number_of_relocations as u16)
- },
- number_of_linenumbers: U16Bytes::new(LE, section.number_of_linenumbers),
- check_sum: U32Bytes::new(LE, section.check_sum),
- number: U16Bytes::new(LE, section.number as u16),
- selection: section.selection,
- reserved: 0,
- high_number: U16Bytes::new(LE, (section.number >> 16) as u16),
- };
- self.buffer.write(&aux);
- }
-
- /// Return the number of reserved symbol table entries.
- pub fn symbol_count(&self) -> u32 {
- self.symtab_num
- }
-
- /// Add a string to the string table.
- ///
- /// This must be called before [`Self::reserve_symtab_strtab`].
- pub fn add_string(&mut self, name: &'a [u8]) -> StringId {
- debug_assert_eq!(self.strtab_offset, 0);
- self.strtab.add(name)
- }
-
- /// Add a section or symbol name to the string table if required.
- ///
- /// This must be called before [`Self::reserve_symtab_strtab`].
- pub fn add_name(&mut self, name: &'a [u8]) -> Name {
- if name.len() > 8 {
- Name::Long(self.add_string(name))
- } else {
- let mut short_name = [0; 8];
- short_name[..name.len()].copy_from_slice(name);
- Name::Short(short_name)
- }
- }
-
- /// Reserve the range for the symbol table and string table.
- ///
- /// This must be called after functions that reserve symbol
- /// indices or add strings.
- pub fn reserve_symtab_strtab(&mut self) {
- debug_assert_eq!(self.symtab_offset, 0);
- self.symtab_offset = self.reserve(self.symtab_num as usize * pe::IMAGE_SIZEOF_SYMBOL, 1);
-
- debug_assert_eq!(self.strtab_offset, 0);
- // First 4 bytes of strtab are the length.
- self.strtab.write(4, &mut self.strtab_data);
- self.strtab_len = self.strtab_data.len() + 4;
- self.strtab_offset = self.reserve(self.strtab_len, 1);
- }
-
- /// Write the string table.
- pub fn write_strtab(&mut self) {
- debug_assert_eq!(self.strtab_offset, self.buffer.len() as u32);
- self.buffer
- .write_bytes(&u32::to_le_bytes(self.strtab_len as u32));
- self.buffer.write_bytes(&self.strtab_data);
- }
-}
-
-/// Shortened and native endian version of [`pe::ImageFileHeader`].
-#[allow(missing_docs)]
-#[derive(Debug, Default, Clone)]
-pub struct FileHeader {
- pub machine: u16,
- pub time_date_stamp: u32,
- pub characteristics: u16,
-}
-
-/// A section or symbol name.
-#[derive(Debug, Clone, Copy)]
-pub enum Name {
- /// An inline name.
- Short([u8; 8]),
- /// An id of a string table entry.
- Long(StringId),
-}
-
-impl Default for Name {
- fn default() -> Name {
- Name::Short([0; 8])
- }
-}
-
-// From isn't useful.
-#[allow(clippy::from_over_into)]
-impl<'a> Into<Name> for &'a [u8; 8] {
- fn into(self) -> Name {
- Name::Short(*self)
- }
-}
-
-/// Native endian version of [`pe::ImageSectionHeader`].
-#[allow(missing_docs)]
-#[derive(Debug, Default, Clone)]
-pub struct SectionHeader {
- pub name: Name,
- pub size_of_raw_data: u32,
- pub pointer_to_raw_data: u32,
- pub pointer_to_relocations: u32,
- pub pointer_to_linenumbers: u32,
- /// This will automatically be clamped if there are more than 0xffff.
- pub number_of_relocations: u32,
- pub number_of_linenumbers: u16,
- pub characteristics: u32,
-}
-
-/// Native endian version of [`pe::ImageSymbol`].
-#[allow(missing_docs)]
-#[derive(Debug, Default, Clone)]
-pub struct Symbol {
- pub name: Name,
- pub value: u32,
- pub section_number: u16,
- pub typ: u16,
- pub storage_class: u8,
- pub number_of_aux_symbols: u8,
-}
-
-/// Native endian version of [`pe::ImageAuxSymbolSection`].
-#[allow(missing_docs)]
-#[derive(Debug, Default, Clone)]
-pub struct AuxSymbolSection {
- pub length: u32,
- /// This will automatically be clamped if there are more than 0xffff.
- pub number_of_relocations: u32,
- pub number_of_linenumbers: u16,
- pub check_sum: u32,
- pub number: u32,
- pub selection: u8,
-}
-
-/// Native endian version of [`pe::ImageRelocation`].
-#[allow(missing_docs)]
-#[derive(Debug, Default, Clone)]
-pub struct Relocation {
- pub virtual_address: u32,
- pub symbol: u32,
- pub typ: u16,
-}