Deleted vendor folder

1 files changed, 0 insertions, 907 deletions

diff --git a/vendor/object/src/write/elf/object.rs b/vendor/object/src/write/elf/object.rs
deleted file mode 100644
index 5d7a93e..0000000
--- a/vendor/object/src/write/elf/object.rs
+++ /dev/null
@@ -1,907 +0,0 @@
-use alloc::vec::Vec;
-
-use crate::write::elf::writer::*;
-use crate::write::string::StringId;
-use crate::write::*;
-use crate::AddressSize;
-use crate::{elf, pod};
-
-#[derive(Clone, Copy)]
-struct ComdatOffsets {
-    offset: usize,
-    str_id: StringId,
-}
-
-#[derive(Clone, Copy)]
-struct SectionOffsets {
-    index: SectionIndex,
-    offset: usize,
-    str_id: StringId,
-    reloc_offset: usize,
-    reloc_str_id: Option<StringId>,
-}
-
-#[derive(Default, Clone, Copy)]
-struct SymbolOffsets {
-    index: SymbolIndex,
-    str_id: Option<StringId>,
-}
-
-// Public methods.
-impl<'a> Object<'a> {
-    /// Add a property with a u32 value to the ELF ".note.gnu.property" section.
-    ///
-    /// Requires `feature = "elf"`.
-    pub fn add_elf_gnu_property_u32(&mut self, property: u32, value: u32) {
-        if self.format != BinaryFormat::Elf {
-            return;
-        }
-
-        let align = if self.elf_is_64() { 8 } else { 4 };
-        let mut data = Vec::with_capacity(32);
-        let n_name = b"GNU\0";
-        data.extend_from_slice(pod::bytes_of(&elf::NoteHeader32 {
-            n_namesz: U32::new(self.endian, n_name.len() as u32),
-            n_descsz: U32::new(self.endian, util::align(3 * 4, align) as u32),
-            n_type: U32::new(self.endian, elf::NT_GNU_PROPERTY_TYPE_0),
-        }));
-        data.extend_from_slice(n_name);
-        // This happens to already be aligned correctly.
-        debug_assert_eq!(util::align(data.len(), align), data.len());
-        data.extend_from_slice(pod::bytes_of(&U32::new(self.endian, property)));
-        // Value size
-        data.extend_from_slice(pod::bytes_of(&U32::new(self.endian, 4)));
-        data.extend_from_slice(pod::bytes_of(&U32::new(self.endian, value)));
-        util::write_align(&mut data, align);
-
-        let section = self.section_id(StandardSection::GnuProperty);
-        self.append_section_data(section, &data, align as u64);
-    }
-}
-
-// Private methods.
-impl<'a> Object<'a> {
-    pub(crate) fn elf_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::ReadOnlyString => (
-                &[],
-                &b".rodata"[..],
-                SectionKind::ReadOnlyData,
-                SectionFlags::None,
-            ),
-            StandardSection::ReadOnlyDataWithRel => (
-                &[],
-                b".data.rel.ro",
-                SectionKind::ReadOnlyDataWithRel,
-                SectionFlags::None,
-            ),
-            StandardSection::UninitializedData => (
-                &[],
-                &b".bss"[..],
-                SectionKind::UninitializedData,
-                SectionFlags::None,
-            ),
-            StandardSection::Tls => (&[], &b".tdata"[..], SectionKind::Tls, SectionFlags::None),
-            StandardSection::UninitializedTls => (
-                &[],
-                &b".tbss"[..],
-                SectionKind::UninitializedTls,
-                SectionFlags::None,
-            ),
-            StandardSection::TlsVariables => {
-                // Unsupported section.
-                (&[], &[], SectionKind::TlsVariables, SectionFlags::None)
-            }
-            StandardSection::Common => {
-                // Unsupported section.
-                (&[], &[], SectionKind::Common, SectionFlags::None)
-            }
-            StandardSection::GnuProperty => (
-                &[],
-                &b".note.gnu.property"[..],
-                SectionKind::Note,
-                SectionFlags::Elf {
-                    sh_flags: u64::from(elf::SHF_ALLOC),
-                },
-            ),
-        }
-    }
-
-    pub(crate) fn elf_subsection_name(&self, section: &[u8], value: &[u8]) -> Vec<u8> {
-        let mut name = section.to_vec();
-        name.push(b'.');
-        name.extend_from_slice(value);
-        name
-    }
-
-    fn elf_has_relocation_addend(&self) -> Result<bool> {
-        Ok(match self.architecture {
-            Architecture::Aarch64 => true,
-            Architecture::Aarch64_Ilp32 => true,
-            Architecture::Arm => false,
-            Architecture::Avr => true,
-            Architecture::Bpf => false,
-            Architecture::Csky => true,
-            Architecture::I386 => false,
-            Architecture::X86_64 => true,
-            Architecture::X86_64_X32 => true,
-            Architecture::Hexagon => true,
-            Architecture::LoongArch64 => true,
-            Architecture::Mips => false,
-            Architecture::Mips64 => true,
-            Architecture::Msp430 => true,
-            Architecture::PowerPc => true,
-            Architecture::PowerPc64 => true,
-            Architecture::Riscv64 => true,
-            Architecture::Riscv32 => true,
-            Architecture::S390x => true,
-            Architecture::Sbf => false,
-            Architecture::Sharc => true,
-            Architecture::Sparc64 => true,
-            Architecture::Xtensa => true,
-            _ => {
-                return Err(Error(format!(
-                    "unimplemented architecture {:?}",
-                    self.architecture
-                )));
-            }
-        })
-    }
-
-    pub(crate) fn elf_fixup_relocation(&mut self, relocation: &mut Relocation) -> Result<i64> {
-        // Determine whether the addend is stored in the relocation or the data.
-        if self.elf_has_relocation_addend()? {
-            Ok(0)
-        } else {
-            let constant = relocation.addend;
-            relocation.addend = 0;
-            Ok(constant)
-        }
-    }
-
-    pub(crate) fn elf_is_64(&self) -> bool {
-        match self.architecture.address_size().unwrap() {
-            AddressSize::U8 | AddressSize::U16 | AddressSize::U32 => false,
-            AddressSize::U64 => true,
-        }
-    }
-
-    pub(crate) fn elf_write(&self, buffer: &mut dyn WritableBuffer) -> Result<()> {
-        // Create reloc section header names so we can reference them.
-        let is_rela = self.elf_has_relocation_addend()?;
-        let reloc_names: Vec<_> = self
-            .sections
-            .iter()
-            .map(|section| {
-                let mut reloc_name = Vec::with_capacity(
-                    if is_rela { ".rela".len() } else { ".rel".len() } + section.name.len(),
-                );
-                if !section.relocations.is_empty() {
-                    reloc_name.extend_from_slice(if is_rela {
-                        &b".rela"[..]
-                    } else {
-                        &b".rel"[..]
-                    });
-                    reloc_name.extend_from_slice(&section.name);
-                }
-                reloc_name
-            })
-            .collect();
-
-        // Start calculating offsets of everything.
-        let mut writer = Writer::new(self.endian, self.elf_is_64(), buffer);
-        writer.reserve_file_header();
-
-        // Calculate size of section data.
-        let mut comdat_offsets = Vec::with_capacity(self.comdats.len());
-        for comdat in &self.comdats {
-            if comdat.kind != ComdatKind::Any {
-                return Err(Error(format!(
-                    "unsupported COMDAT symbol `{}` kind {:?}",
-                    self.symbols[comdat.symbol.0].name().unwrap_or(""),
-                    comdat.kind
-                )));
-            }
-
-            writer.reserve_section_index();
-            let offset = writer.reserve_comdat(comdat.sections.len());
-            let str_id = writer.add_section_name(b".group");
-            comdat_offsets.push(ComdatOffsets { offset, str_id });
-        }
-        let mut section_offsets = Vec::with_capacity(self.sections.len());
-        for (section, reloc_name) in self.sections.iter().zip(reloc_names.iter()) {
-            let index = writer.reserve_section_index();
-            let offset = writer.reserve(section.data.len(), section.align as usize);
-            let str_id = writer.add_section_name(&section.name);
-            let mut reloc_str_id = None;
-            if !section.relocations.is_empty() {
-                writer.reserve_section_index();
-                reloc_str_id = Some(writer.add_section_name(reloc_name));
-            }
-            section_offsets.push(SectionOffsets {
-                index,
-                offset,
-                str_id,
-                // Relocation data is reserved later.
-                reloc_offset: 0,
-                reloc_str_id,
-            });
-        }
-
-        // Calculate index of symbols and add symbol strings to strtab.
-        let mut symbol_offsets = vec![SymbolOffsets::default(); self.symbols.len()];
-        writer.reserve_null_symbol_index();
-        // Local symbols must come before global.
-        for (index, symbol) in self.symbols.iter().enumerate() {
-            if symbol.is_local() {
-                let section_index = symbol.section.id().map(|s| section_offsets[s.0].index);
-                symbol_offsets[index].index = writer.reserve_symbol_index(section_index);
-            }
-        }
-        let symtab_num_local = writer.symbol_count();
-        for (index, symbol) in self.symbols.iter().enumerate() {
-            if !symbol.is_local() {
-                let section_index = symbol.section.id().map(|s| section_offsets[s.0].index);
-                symbol_offsets[index].index = writer.reserve_symbol_index(section_index);
-            }
-        }
-        for (index, symbol) in self.symbols.iter().enumerate() {
-            if symbol.kind != SymbolKind::Section && !symbol.name.is_empty() {
-                symbol_offsets[index].str_id = Some(writer.add_string(&symbol.name));
-            }
-        }
-
-        // Calculate size of symbols.
-        writer.reserve_symtab_section_index();
-        writer.reserve_symtab();
-        if writer.symtab_shndx_needed() {
-            writer.reserve_symtab_shndx_section_index();
-        }
-        writer.reserve_symtab_shndx();
-        writer.reserve_strtab_section_index();
-        writer.reserve_strtab();
-
-        // Calculate size of relocations.
-        for (index, section) in self.sections.iter().enumerate() {
-            let count = section.relocations.len();
-            if count != 0 {
-                section_offsets[index].reloc_offset = writer.reserve_relocations(count, is_rela);
-            }
-        }
-
-        // Calculate size of section headers.
-        writer.reserve_shstrtab_section_index();
-        writer.reserve_shstrtab();
-        writer.reserve_section_headers();
-
-        // Start writing.
-        let e_type = elf::ET_REL;
-        let e_machine = match (self.architecture, self.sub_architecture) {
-            (Architecture::Aarch64, None) => elf::EM_AARCH64,
-            (Architecture::Aarch64_Ilp32, None) => elf::EM_AARCH64,
-            (Architecture::Arm, None) => elf::EM_ARM,
-            (Architecture::Avr, None) => elf::EM_AVR,
-            (Architecture::Bpf, None) => elf::EM_BPF,
-            (Architecture::Csky, None) => elf::EM_CSKY,
-            (Architecture::I386, None) => elf::EM_386,
-            (Architecture::X86_64, None) => elf::EM_X86_64,
-            (Architecture::X86_64_X32, None) => elf::EM_X86_64,
-            (Architecture::Hexagon, None) => elf::EM_HEXAGON,
-            (Architecture::LoongArch64, None) => elf::EM_LOONGARCH,
-            (Architecture::Mips, None) => elf::EM_MIPS,
-            (Architecture::Mips64, None) => elf::EM_MIPS,
-            (Architecture::Msp430, None) => elf::EM_MSP430,
-            (Architecture::PowerPc, None) => elf::EM_PPC,
-            (Architecture::PowerPc64, None) => elf::EM_PPC64,
-            (Architecture::Riscv32, None) => elf::EM_RISCV,
-            (Architecture::Riscv64, None) => elf::EM_RISCV,
-            (Architecture::S390x, None) => elf::EM_S390,
-            (Architecture::Sbf, None) => elf::EM_SBF,
-            (Architecture::Sharc, None) => elf::EM_SHARC,
-            (Architecture::Sparc64, None) => elf::EM_SPARCV9,
-            (Architecture::Xtensa, None) => elf::EM_XTENSA,
-            _ => {
-                return Err(Error(format!(
-                    "unimplemented architecture {:?} with sub-architecture {:?}",
-                    self.architecture, self.sub_architecture
-                )));
-            }
-        };
-        let (os_abi, abi_version, e_flags) = if let FileFlags::Elf {
-            os_abi,
-            abi_version,
-            e_flags,
-        } = self.flags
-        {
-            (os_abi, abi_version, e_flags)
-        } else {
-            (elf::ELFOSABI_NONE, 0, 0)
-        };
-        writer.write_file_header(&FileHeader {
-            os_abi,
-            abi_version,
-            e_type,
-            e_machine,
-            e_entry: 0,
-            e_flags,
-        })?;
-
-        // Write section data.
-        for comdat in &self.comdats {
-            writer.write_comdat_header();
-            for section in &comdat.sections {
-                writer.write_comdat_entry(section_offsets[section.0].index);
-            }
-        }
-        for (index, section) in self.sections.iter().enumerate() {
-            writer.write_align(section.align as usize);
-            debug_assert_eq!(section_offsets[index].offset, writer.len());
-            writer.write(&section.data);
-        }
-
-        // Write symbols.
-        writer.write_null_symbol();
-        let mut write_symbol = |index: usize, symbol: &Symbol| -> Result<()> {
-            let st_info = if let SymbolFlags::Elf { st_info, .. } = symbol.flags {
-                st_info
-            } else {
-                let st_type = match symbol.kind {
-                    SymbolKind::Null => elf::STT_NOTYPE,
-                    SymbolKind::Text => {
-                        if symbol.is_undefined() {
-                            elf::STT_NOTYPE
-                        } else {
-                            elf::STT_FUNC
-                        }
-                    }
-                    SymbolKind::Data => {
-                        if symbol.is_undefined() {
-                            elf::STT_NOTYPE
-                        } else if symbol.is_common() {
-                            elf::STT_COMMON
-                        } else {
-                            elf::STT_OBJECT
-                        }
-                    }
-                    SymbolKind::Section => elf::STT_SECTION,
-                    SymbolKind::File => elf::STT_FILE,
-                    SymbolKind::Tls => elf::STT_TLS,
-                    SymbolKind::Label => elf::STT_NOTYPE,
-                    SymbolKind::Unknown => {
-                        if symbol.is_undefined() {
-                            elf::STT_NOTYPE
-                        } else {
-                            return Err(Error(format!(
-                                "unimplemented symbol `{}` kind {:?}",
-                                symbol.name().unwrap_or(""),
-                                symbol.kind
-                            )));
-                        }
-                    }
-                };
-                let st_bind = if symbol.weak {
-                    elf::STB_WEAK
-                } else if symbol.is_undefined() {
-                    elf::STB_GLOBAL
-                } else if symbol.is_local() {
-                    elf::STB_LOCAL
-                } else {
-                    elf::STB_GLOBAL
-                };
-                (st_bind << 4) + st_type
-            };
-            let st_other = if let SymbolFlags::Elf { st_other, .. } = symbol.flags {
-                st_other
-            } else if symbol.scope == SymbolScope::Linkage {
-                elf::STV_HIDDEN
-            } else {
-                elf::STV_DEFAULT
-            };
-            let (st_shndx, section) = match symbol.section {
-                SymbolSection::None => {
-                    debug_assert_eq!(symbol.kind, SymbolKind::File);
-                    (elf::SHN_ABS, None)
-                }
-                SymbolSection::Undefined => (elf::SHN_UNDEF, None),
-                SymbolSection::Absolute => (elf::SHN_ABS, None),
-                SymbolSection::Common => (elf::SHN_COMMON, None),
-                SymbolSection::Section(id) => (0, Some(section_offsets[id.0].index)),
-            };
-            writer.write_symbol(&Sym {
-                name: symbol_offsets[index].str_id,
-                section,
-                st_info,
-                st_other,
-                st_shndx,
-                st_value: symbol.value,
-                st_size: symbol.size,
-            });
-            Ok(())
-        };
-        for (index, symbol) in self.symbols.iter().enumerate() {
-            if symbol.is_local() {
-                write_symbol(index, symbol)?;
-            }
-        }
-        for (index, symbol) in self.symbols.iter().enumerate() {
-            if !symbol.is_local() {
-                write_symbol(index, symbol)?;
-            }
-        }
-        writer.write_symtab_shndx();
-        writer.write_strtab();
-
-        // Write relocations.
-        for (index, section) in self.sections.iter().enumerate() {
-            if !section.relocations.is_empty() {
-                writer.write_align_relocation();
-                debug_assert_eq!(section_offsets[index].reloc_offset, writer.len());
-                for reloc in &section.relocations {
-                    let r_type = match self.architecture {
-                        Architecture::Aarch64 => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, RelocationEncoding::Generic, 64) => {
-                                elf::R_AARCH64_ABS64
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::Generic, 32) => {
-                                elf::R_AARCH64_ABS32
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::Generic, 16) => {
-                                elf::R_AARCH64_ABS16
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::Generic, 64) => {
-                                elf::R_AARCH64_PREL64
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::Generic, 32) => {
-                                elf::R_AARCH64_PREL32
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::Generic, 16) => {
-                                elf::R_AARCH64_PREL16
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::AArch64Call, 26)
-                            | (RelocationKind::PltRelative, RelocationEncoding::AArch64Call, 26) => {
-                                elf::R_AARCH64_CALL26
-                            }
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Aarch64_Ilp32 => {
-                            match (reloc.kind, reloc.encoding, reloc.size) {
-                                (RelocationKind::Absolute, RelocationEncoding::Generic, 32) => {
-                                    elf::R_AARCH64_P32_ABS32
-                                }
-                                (RelocationKind::Elf(x), _, _) => x,
-                                _ => {
-                                    return Err(Error(format!(
-                                        "unimplemented relocation {:?}",
-                                        reloc
-                                    )));
-                                }
-                            }
-                        }
-                        Architecture::Arm => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 32) => elf::R_ARM_ABS32,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Avr => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 32) => elf::R_AVR_32,
-                            (RelocationKind::Absolute, _, 16) => elf::R_AVR_16,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Bpf => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 64) => elf::R_BPF_64_64,
-                            (RelocationKind::Absolute, _, 32) => elf::R_BPF_64_32,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Csky => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 32) => elf::R_CKCORE_ADDR32,
-                            (RelocationKind::Relative, RelocationEncoding::Generic, 32) => {
-                                elf::R_CKCORE_PCREL32
-                            }
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::I386 => match (reloc.kind, reloc.size) {
-                            (RelocationKind::Absolute, 32) => elf::R_386_32,
-                            (RelocationKind::Relative, 32) => elf::R_386_PC32,
-                            (RelocationKind::Got, 32) => elf::R_386_GOT32,
-                            (RelocationKind::PltRelative, 32) => elf::R_386_PLT32,
-                            (RelocationKind::GotBaseOffset, 32) => elf::R_386_GOTOFF,
-                            (RelocationKind::GotBaseRelative, 32) => elf::R_386_GOTPC,
-                            (RelocationKind::Absolute, 16) => elf::R_386_16,
-                            (RelocationKind::Relative, 16) => elf::R_386_PC16,
-                            (RelocationKind::Absolute, 8) => elf::R_386_8,
-                            (RelocationKind::Relative, 8) => elf::R_386_PC8,
-                            (RelocationKind::Elf(x), _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::X86_64 | Architecture::X86_64_X32 => {
-                            match (reloc.kind, reloc.encoding, reloc.size) {
-                                (RelocationKind::Absolute, RelocationEncoding::Generic, 64) => {
-                                    elf::R_X86_64_64
-                                }
-                                (RelocationKind::Relative, RelocationEncoding::X86Branch, 32) => {
-                                    elf::R_X86_64_PLT32
-                                }
-                                (RelocationKind::Relative, _, 32) => elf::R_X86_64_PC32,
-                                (RelocationKind::Got, _, 32) => elf::R_X86_64_GOT32,
-                                (RelocationKind::PltRelative, _, 32) => elf::R_X86_64_PLT32,
-                                (RelocationKind::GotRelative, _, 32) => elf::R_X86_64_GOTPCREL,
-                                (RelocationKind::Absolute, RelocationEncoding::Generic, 32) => {
-                                    elf::R_X86_64_32
-                                }
-                                (RelocationKind::Absolute, RelocationEncoding::X86Signed, 32) => {
-                                    elf::R_X86_64_32S
-                                }
-                                (RelocationKind::Absolute, _, 16) => elf::R_X86_64_16,
-                                (RelocationKind::Relative, _, 16) => elf::R_X86_64_PC16,
-                                (RelocationKind::Absolute, _, 8) => elf::R_X86_64_8,
-                                (RelocationKind::Relative, _, 8) => elf::R_X86_64_PC8,
-                                (RelocationKind::Elf(x), _, _) => x,
-                                _ => {
-                                    return Err(Error(format!(
-                                        "unimplemented relocation {:?}",
-                                        reloc
-                                    )));
-                                }
-                            }
-                        }
-                        Architecture::Hexagon => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 32) => elf::R_HEX_32,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::LoongArch64 => match (reloc.kind, reloc.encoding, reloc.size)
-                        {
-                            (RelocationKind::Absolute, _, 32) => elf::R_LARCH_32,
-                            (RelocationKind::Absolute, _, 64) => elf::R_LARCH_64,
-                            (RelocationKind::Relative, _, 32) => elf::R_LARCH_32_PCREL,
-                            (RelocationKind::Relative, _, 64) => elf::R_LARCH_64_PCREL,
-                            (RelocationKind::Relative, RelocationEncoding::LoongArchBranch, 16)
-                            | (
-                                RelocationKind::PltRelative,
-                                RelocationEncoding::LoongArchBranch,
-                                16,
-                            ) => elf::R_LARCH_B16,
-                            (RelocationKind::Relative, RelocationEncoding::LoongArchBranch, 21)
-                            | (
-                                RelocationKind::PltRelative,
-                                RelocationEncoding::LoongArchBranch,
-                                21,
-                            ) => elf::R_LARCH_B21,
-                            (RelocationKind::Relative, RelocationEncoding::LoongArchBranch, 26)
-                            | (
-                                RelocationKind::PltRelative,
-                                RelocationEncoding::LoongArchBranch,
-                                26,
-                            ) => elf::R_LARCH_B26,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Mips | Architecture::Mips64 => {
-                            match (reloc.kind, reloc.encoding, reloc.size) {
-                                (RelocationKind::Absolute, _, 16) => elf::R_MIPS_16,
-                                (RelocationKind::Absolute, _, 32) => elf::R_MIPS_32,
-                                (RelocationKind::Absolute, _, 64) => elf::R_MIPS_64,
-                                (RelocationKind::Elf(x), _, _) => x,
-                                _ => {
-                                    return Err(Error(format!(
-                                        "unimplemented relocation {:?}",
-                                        reloc
-                                    )));
-                                }
-                            }
-                        }
-                        Architecture::Msp430 => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 32) => elf::R_MSP430_32,
-                            (RelocationKind::Absolute, _, 16) => elf::R_MSP430_16_BYTE,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::PowerPc => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 32) => elf::R_PPC_ADDR32,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::PowerPc64 => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 32) => elf::R_PPC64_ADDR32,
-                            (RelocationKind::Absolute, _, 64) => elf::R_PPC64_ADDR64,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Riscv32 | Architecture::Riscv64 => {
-                            match (reloc.kind, reloc.encoding, reloc.size) {
-                                (RelocationKind::Absolute, _, 32) => elf::R_RISCV_32,
-                                (RelocationKind::Absolute, _, 64) => elf::R_RISCV_64,
-                                (RelocationKind::Relative, RelocationEncoding::Generic, 32) => {
-                                    elf::R_RISCV_32_PCREL
-                                }
-                                (RelocationKind::Elf(x), _, _) => x,
-                                _ => {
-                                    return Err(Error(format!(
-                                        "unimplemented relocation {:?}",
-                                        reloc
-                                    )));
-                                }
-                            }
-                        }
-                        Architecture::S390x => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, RelocationEncoding::Generic, 8) => {
-                                elf::R_390_8
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::Generic, 16) => {
-                                elf::R_390_16
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::Generic, 32) => {
-                                elf::R_390_32
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::Generic, 64) => {
-                                elf::R_390_64
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::Generic, 16) => {
-                                elf::R_390_PC16
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::Generic, 32) => {
-                                elf::R_390_PC32
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::Generic, 64) => {
-                                elf::R_390_PC64
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::S390xDbl, 16) => {
-                                elf::R_390_PC16DBL
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::S390xDbl, 32) => {
-                                elf::R_390_PC32DBL
-                            }
-                            (RelocationKind::PltRelative, RelocationEncoding::S390xDbl, 16) => {
-                                elf::R_390_PLT16DBL
-                            }
-                            (RelocationKind::PltRelative, RelocationEncoding::S390xDbl, 32) => {
-                                elf::R_390_PLT32DBL
-                            }
-                            (RelocationKind::Got, RelocationEncoding::Generic, 16) => {
-                                elf::R_390_GOT16
-                            }
-                            (RelocationKind::Got, RelocationEncoding::Generic, 32) => {
-                                elf::R_390_GOT32
-                            }
-                            (RelocationKind::Got, RelocationEncoding::Generic, 64) => {
-                                elf::R_390_GOT64
-                            }
-                            (RelocationKind::GotRelative, RelocationEncoding::S390xDbl, 32) => {
-                                elf::R_390_GOTENT
-                            }
-                            (RelocationKind::GotBaseOffset, RelocationEncoding::Generic, 16) => {
-                                elf::R_390_GOTOFF16
-                            }
-                            (RelocationKind::GotBaseOffset, RelocationEncoding::Generic, 32) => {
-                                elf::R_390_GOTOFF32
-                            }
-                            (RelocationKind::GotBaseOffset, RelocationEncoding::Generic, 64) => {
-                                elf::R_390_GOTOFF64
-                            }
-                            (RelocationKind::GotBaseRelative, RelocationEncoding::Generic, 64) => {
-                                elf::R_390_GOTPC
-                            }
-                            (RelocationKind::GotBaseRelative, RelocationEncoding::S390xDbl, 32) => {
-                                elf::R_390_GOTPCDBL
-                            }
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Sbf => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 64) => elf::R_SBF_64_64,
-                            (RelocationKind::Absolute, _, 32) => elf::R_SBF_64_32,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Sharc => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, RelocationEncoding::SharcTypeA, 32) => {
-                                elf::R_SHARC_ADDR32_V3
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::Generic, 32) => {
-                                elf::R_SHARC_ADDR_VAR_V3
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::SharcTypeA, 24) => {
-                                elf::R_SHARC_PCRLONG_V3
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::SharcTypeA, 6) => {
-                                elf::R_SHARC_PCRSHORT_V3
-                            }
-                            (RelocationKind::Relative, RelocationEncoding::SharcTypeB, 6) => {
-                                elf::R_SHARC_PCRSHORT_V3
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::Generic, 16) => {
-                                elf::R_SHARC_ADDR_VAR16_V3
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::SharcTypeA, 16) => {
-                                elf::R_SHARC_DATA16_V3
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::SharcTypeB, 16) => {
-                                elf::R_SHARC_DATA16_VISA_V3
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::SharcTypeA, 24) => {
-                                elf::R_SHARC_ADDR24_V3
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::SharcTypeA, 6) => {
-                                elf::R_SHARC_DATA6_V3
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::SharcTypeB, 6) => {
-                                elf::R_SHARC_DATA6_VISA_V3
-                            }
-                            (RelocationKind::Absolute, RelocationEncoding::SharcTypeB, 7) => {
-                                elf::R_SHARC_DATA7_VISA_V3
-                            }
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Sparc64 => match (reloc.kind, reloc.encoding, reloc.size) {
-                            // TODO: use R_SPARC_32/R_SPARC_64 if aligned.
-                            (RelocationKind::Absolute, _, 32) => elf::R_SPARC_UA32,
-                            (RelocationKind::Absolute, _, 64) => elf::R_SPARC_UA64,
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        Architecture::Xtensa => match (reloc.kind, reloc.encoding, reloc.size) {
-                            (RelocationKind::Absolute, _, 32) => elf::R_XTENSA_32,
-                            (RelocationKind::Relative, RelocationEncoding::Generic, 32) => {
-                                elf::R_XTENSA_32_PCREL
-                            }
-                            (RelocationKind::Elf(x), _, _) => x,
-                            _ => {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        },
-                        _ => {
-                            if let RelocationKind::Elf(x) = reloc.kind {
-                                x
-                            } else {
-                                return Err(Error(format!("unimplemented relocation {:?}", reloc)));
-                            }
-                        }
-                    };
-                    let r_sym = symbol_offsets[reloc.symbol.0].index.0;
-                    writer.write_relocation(
-                        is_rela,
-                        &Rel {
-                            r_offset: reloc.offset,
-                            r_sym,
-                            r_type,
-                            r_addend: reloc.addend,
-                        },
-                    );
-                }
-            }
-        }
-
-        writer.write_shstrtab();
-
-        // Write section headers.
-        writer.write_null_section_header();
-
-        let symtab_index = writer.symtab_index();
-        for (comdat, comdat_offset) in self.comdats.iter().zip(comdat_offsets.iter()) {
-            writer.write_comdat_section_header(
-                comdat_offset.str_id,
-                symtab_index,
-                symbol_offsets[comdat.symbol.0].index,
-                comdat_offset.offset,
-                comdat.sections.len(),
-            );
-        }
-        for (index, section) in self.sections.iter().enumerate() {
-            let sh_type = match section.kind {
-                SectionKind::UninitializedData | SectionKind::UninitializedTls => elf::SHT_NOBITS,
-                SectionKind::Note => elf::SHT_NOTE,
-                SectionKind::Elf(sh_type) => sh_type,
-                _ => elf::SHT_PROGBITS,
-            };
-            let sh_flags = if let SectionFlags::Elf { sh_flags } = section.flags {
-                sh_flags
-            } else {
-                match section.kind {
-                    SectionKind::Text => elf::SHF_ALLOC | elf::SHF_EXECINSTR,
-                    SectionKind::Data | SectionKind::ReadOnlyDataWithRel => {
-                        elf::SHF_ALLOC | elf::SHF_WRITE
-                    }
-                    SectionKind::Tls => elf::SHF_ALLOC | elf::SHF_WRITE | elf::SHF_TLS,
-                    SectionKind::UninitializedData => elf::SHF_ALLOC | elf::SHF_WRITE,
-                    SectionKind::UninitializedTls => elf::SHF_ALLOC | elf::SHF_WRITE | elf::SHF_TLS,
-                    SectionKind::ReadOnlyData => elf::SHF_ALLOC,
-                    SectionKind::ReadOnlyString => {
-                        elf::SHF_ALLOC | elf::SHF_STRINGS | elf::SHF_MERGE
-                    }
-                    SectionKind::OtherString => elf::SHF_STRINGS | elf::SHF_MERGE,
-                    SectionKind::Other
-                    | SectionKind::Debug
-                    | SectionKind::Metadata
-                    | SectionKind::Linker
-                    | SectionKind::Note
-                    | SectionKind::Elf(_) => 0,
-                    SectionKind::Unknown | SectionKind::Common | SectionKind::TlsVariables => {
-                        return Err(Error(format!(
-                            "unimplemented section `{}` kind {:?}",
-                            section.name().unwrap_or(""),
-                            section.kind
-                        )));
-                    }
-                }
-                .into()
-            };
-            // TODO: not sure if this is correct, maybe user should determine this
-            let sh_entsize = match section.kind {
-                SectionKind::ReadOnlyString | SectionKind::OtherString => 1,
-                _ => 0,
-            };
-            writer.write_section_header(&SectionHeader {
-                name: Some(section_offsets[index].str_id),
-                sh_type,
-                sh_flags,
-                sh_addr: 0,
-                sh_offset: section_offsets[index].offset as u64,
-                sh_size: section.size,
-                sh_link: 0,
-                sh_info: 0,
-                sh_addralign: section.align,
-                sh_entsize,
-            });
-
-            if !section.relocations.is_empty() {
-                writer.write_relocation_section_header(
-                    section_offsets[index].reloc_str_id.unwrap(),
-                    section_offsets[index].index,
-                    symtab_index,
-                    section_offsets[index].reloc_offset,
-                    section.relocations.len(),
-                    is_rela,
-                );
-            }
-        }
-
-        writer.write_symtab_section_header(symtab_num_local);
-        writer.write_symtab_shndx_section_header();
-        writer.write_strtab_section_header();
-        writer.write_shstrtab_section_header();
-
-        debug_assert_eq!(writer.reserved_len(), writer.len());
-
-        Ok(())
-    }
-}