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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/common.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
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-/// A CPU architecture.
-#[allow(missing_docs)]
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum Architecture {
- Unknown,
- Aarch64,
- #[allow(non_camel_case_types)]
- Aarch64_Ilp32,
- Arm,
- Avr,
- Bpf,
- Csky,
- I386,
- X86_64,
- #[allow(non_camel_case_types)]
- X86_64_X32,
- Hexagon,
- LoongArch64,
- Mips,
- Mips64,
- Msp430,
- PowerPc,
- PowerPc64,
- Riscv32,
- Riscv64,
- S390x,
- Sbf,
- Sharc,
- Sparc64,
- Wasm32,
- Wasm64,
- Xtensa,
-}
-
-/// A CPU sub-architecture.
-#[allow(missing_docs)]
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum SubArchitecture {
- Arm64E,
- Arm64EC,
-}
-
-impl Architecture {
- /// The size of an address value for this architecture.
- ///
- /// Returns `None` for unknown architectures.
- pub fn address_size(self) -> Option<AddressSize> {
- match self {
- Architecture::Unknown => None,
- Architecture::Aarch64 => Some(AddressSize::U64),
- Architecture::Aarch64_Ilp32 => Some(AddressSize::U32),
- Architecture::Arm => Some(AddressSize::U32),
- Architecture::Avr => Some(AddressSize::U8),
- Architecture::Bpf => Some(AddressSize::U64),
- Architecture::Csky => Some(AddressSize::U32),
- Architecture::I386 => Some(AddressSize::U32),
- Architecture::X86_64 => Some(AddressSize::U64),
- Architecture::X86_64_X32 => Some(AddressSize::U32),
- Architecture::Hexagon => Some(AddressSize::U32),
- Architecture::LoongArch64 => Some(AddressSize::U64),
- Architecture::Mips => Some(AddressSize::U32),
- Architecture::Mips64 => Some(AddressSize::U64),
- Architecture::Msp430 => Some(AddressSize::U16),
- Architecture::PowerPc => Some(AddressSize::U32),
- Architecture::PowerPc64 => Some(AddressSize::U64),
- Architecture::Riscv32 => Some(AddressSize::U32),
- Architecture::Riscv64 => Some(AddressSize::U64),
- Architecture::S390x => Some(AddressSize::U64),
- Architecture::Sbf => Some(AddressSize::U64),
- Architecture::Sharc => Some(AddressSize::U32),
- Architecture::Sparc64 => Some(AddressSize::U64),
- Architecture::Wasm32 => Some(AddressSize::U32),
- Architecture::Wasm64 => Some(AddressSize::U64),
- Architecture::Xtensa => Some(AddressSize::U32),
- }
- }
-}
-
-/// The size of an address value for an architecture.
-///
-/// This may differ from the address size supported by the file format (such as for COFF).
-#[allow(missing_docs)]
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-#[repr(u8)]
-pub enum AddressSize {
- U8 = 1,
- U16 = 2,
- U32 = 4,
- U64 = 8,
-}
-
-impl AddressSize {
- /// The size in bytes of an address value.
- #[inline]
- pub fn bytes(self) -> u8 {
- self as u8
- }
-}
-
-/// A binary file format.
-#[allow(missing_docs)]
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum BinaryFormat {
- Coff,
- Elf,
- MachO,
- Pe,
- Wasm,
- Xcoff,
-}
-
-/// The kind of a section.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum SectionKind {
- /// The section kind is unknown.
- Unknown,
- /// An executable code section.
- ///
- /// Example ELF sections: `.text`
- ///
- /// Example Mach-O sections: `__TEXT/__text`
- Text,
- /// A data section.
- ///
- /// Example ELF sections: `.data`
- ///
- /// Example Mach-O sections: `__DATA/__data`
- Data,
- /// A read only data section.
- ///
- /// Example ELF sections: `.rodata`
- ///
- /// Example Mach-O sections: `__TEXT/__const`, `__DATA/__const`, `__TEXT/__literal4`
- ReadOnlyData,
- /// A read only data section with relocations.
- ///
- /// This is the same as either `Data` or `ReadOnlyData`, depending on the file format.
- /// This value is only used in the API for writing files. It is never returned when reading files.
- ReadOnlyDataWithRel,
- /// A loadable string section.
- ///
- /// Example ELF sections: `.rodata.str`
- ///
- /// Example Mach-O sections: `__TEXT/__cstring`
- ReadOnlyString,
- /// An uninitialized data section.
- ///
- /// Example ELF sections: `.bss`
- ///
- /// Example Mach-O sections: `__DATA/__bss`
- UninitializedData,
- /// An uninitialized common data section.
- ///
- /// Example Mach-O sections: `__DATA/__common`
- Common,
- /// A TLS data section.
- ///
- /// Example ELF sections: `.tdata`
- ///
- /// Example Mach-O sections: `__DATA/__thread_data`
- Tls,
- /// An uninitialized TLS data section.
- ///
- /// Example ELF sections: `.tbss`
- ///
- /// Example Mach-O sections: `__DATA/__thread_bss`
- UninitializedTls,
- /// A TLS variables section.
- ///
- /// This contains TLS variable structures, rather than the variable initializers.
- ///
- /// Example Mach-O sections: `__DATA/__thread_vars`
- TlsVariables,
- /// A non-loadable string section.
- ///
- /// Example ELF sections: `.comment`, `.debug_str`
- OtherString,
- /// Some other non-loadable section.
- ///
- /// Example ELF sections: `.debug_info`
- Other,
- /// Debug information.
- ///
- /// Example Mach-O sections: `__DWARF/__debug_info`
- Debug,
- /// Information for the linker.
- ///
- /// Example COFF sections: `.drectve`
- Linker,
- /// ELF note section.
- Note,
- /// Metadata such as symbols or relocations.
- ///
- /// Example ELF sections: `.symtab`, `.strtab`, `.group`
- Metadata,
- /// Some other ELF section type.
- ///
- /// This is the `sh_type` field in the section header.
- /// The meaning may be dependent on the architecture.
- Elf(u32),
-}
-
-impl SectionKind {
- /// Return true if this section contains zerofill data.
- pub fn is_bss(self) -> bool {
- self == SectionKind::UninitializedData
- || self == SectionKind::UninitializedTls
- || self == SectionKind::Common
- }
-}
-
-/// The selection kind for a COMDAT section group.
-///
-/// This determines the way in which the linker resolves multiple definitions of the COMDAT
-/// sections.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum ComdatKind {
- /// The selection kind is unknown.
- Unknown,
- /// Multiple definitions are allowed.
- ///
- /// An arbitrary definition is selected, and the rest are removed.
- ///
- /// This is the only supported selection kind for ELF.
- Any,
- /// Multiple definitions are not allowed.
- ///
- /// This is used to group sections without allowing duplicates.
- NoDuplicates,
- /// Multiple definitions must have the same size.
- ///
- /// An arbitrary definition is selected, and the rest are removed.
- SameSize,
- /// Multiple definitions must match exactly.
- ///
- /// An arbitrary definition is selected, and the rest are removed.
- ExactMatch,
- /// Multiple definitions are allowed, and the largest is selected.
- ///
- /// An arbitrary definition with the largest size is selected, and the rest are removed.
- Largest,
- /// Multiple definitions are allowed, and the newest is selected.
- Newest,
-}
-
-/// The kind of a symbol.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum SymbolKind {
- /// The symbol kind is unknown.
- Unknown,
- /// The symbol is a null placeholder.
- Null,
- /// The symbol is for executable code.
- Text,
- /// The symbol is for a data object.
- Data,
- /// The symbol is for a section.
- Section,
- /// The symbol is the name of a file. It precedes symbols within that file.
- File,
- /// The symbol is for a code label.
- Label,
- /// The symbol is for a thread local storage entity.
- Tls,
-}
-
-/// A symbol scope.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub enum SymbolScope {
- /// Unknown scope.
- Unknown,
- /// Symbol is visible to the compilation unit.
- Compilation,
- /// Symbol is visible to the static linkage unit.
- Linkage,
- /// Symbol is visible to dynamically linked objects.
- Dynamic,
-}
-
-/// The operation used to calculate the result of the relocation.
-///
-/// The relocation descriptions use the following definitions. Note that
-/// these definitions probably don't match any ELF ABI.
-///
-/// * A - The value of the addend.
-/// * G - The address of the symbol's entry within the global offset table.
-/// * L - The address of the symbol's entry within the procedure linkage table.
-/// * P - The address of the place of the relocation.
-/// * S - The address of the symbol.
-/// * GotBase - The address of the global offset table.
-/// * Image - The base address of the image.
-/// * Section - The address of the section containing the symbol.
-///
-/// 'XxxRelative' means 'Xxx + A - P'. 'XxxOffset' means 'S + A - Xxx'.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum RelocationKind {
- /// S + A
- Absolute,
- /// S + A - P
- Relative,
- /// G + A - GotBase
- Got,
- /// G + A - P
- GotRelative,
- /// GotBase + A - P
- GotBaseRelative,
- /// S + A - GotBase
- GotBaseOffset,
- /// L + A - P
- PltRelative,
- /// S + A - Image
- ImageOffset,
- /// S + A - Section
- SectionOffset,
- /// The index of the section containing the symbol.
- SectionIndex,
- /// Some other ELF relocation. The value is dependent on the architecture.
- Elf(u32),
- /// Some other Mach-O relocation. The value is dependent on the architecture.
- MachO {
- /// The relocation type.
- value: u8,
- /// Whether the relocation is relative to the place.
- relative: bool,
- },
- /// Some other COFF relocation. The value is dependent on the architecture.
- Coff(u16),
- /// Some other XCOFF relocation.
- Xcoff(u8),
-}
-
-/// Information about how the result of the relocation operation is encoded in the place.
-///
-/// This is usually architecture specific, such as specifying an addressing mode or
-/// a specific instruction.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum RelocationEncoding {
- /// Generic encoding.
- Generic,
-
- /// x86 sign extension at runtime.
- ///
- /// Used with `RelocationKind::Absolute`.
- X86Signed,
- /// x86 rip-relative addressing.
- ///
- /// The `RelocationKind` must be PC relative.
- X86RipRelative,
- /// x86 rip-relative addressing in movq instruction.
- ///
- /// The `RelocationKind` must be PC relative.
- X86RipRelativeMovq,
- /// x86 branch instruction.
- ///
- /// The `RelocationKind` must be PC relative.
- X86Branch,
-
- /// s390x PC-relative offset shifted right by one bit.
- ///
- /// The `RelocationKind` must be PC relative.
- S390xDbl,
-
- /// AArch64 call target.
- ///
- /// The `RelocationKind` must be PC relative.
- AArch64Call,
-
- /// LoongArch branch offset with two trailing zeros.
- ///
- /// The `RelocationKind` must be PC relative.
- LoongArchBranch,
-
- /// SHARC+ 48-bit Type A instruction
- ///
- /// Represents these possible variants, each with a corresponding
- /// `R_SHARC_*` constant:
- ///
- /// * 24-bit absolute address
- /// * 32-bit absolute address
- /// * 6-bit relative address
- /// * 24-bit relative address
- /// * 6-bit absolute address in the immediate value field
- /// * 16-bit absolute address in the immediate value field
- SharcTypeA,
-
- /// SHARC+ 32-bit Type B instruction
- ///
- /// Represents these possible variants, each with a corresponding
- /// `R_SHARC_*` constant:
- ///
- /// * 6-bit absolute address in the immediate value field
- /// * 7-bit absolute address in the immediate value field
- /// * 16-bit absolute address
- /// * 6-bit relative address
- SharcTypeB,
-}
-
-/// File flags that are specific to each file format.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum FileFlags {
- /// No file flags.
- None,
- /// ELF file flags.
- Elf {
- /// `os_abi` field in the ELF file header.
- os_abi: u8,
- /// `abi_version` field in the ELF file header.
- abi_version: u8,
- /// `e_flags` field in the ELF file header.
- e_flags: u32,
- },
- /// Mach-O file flags.
- MachO {
- /// `flags` field in the Mach-O file header.
- flags: u32,
- },
- /// COFF file flags.
- Coff {
- /// `Characteristics` field in the COFF file header.
- characteristics: u16,
- },
- /// XCOFF file flags.
- Xcoff {
- /// `f_flags` field in the XCOFF file header.
- f_flags: u16,
- },
-}
-
-/// Segment flags that are specific to each file format.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum SegmentFlags {
- /// No segment flags.
- None,
- /// ELF segment flags.
- Elf {
- /// `p_flags` field in the segment header.
- p_flags: u32,
- },
- /// Mach-O segment flags.
- MachO {
- /// `flags` field in the segment header.
- flags: u32,
- /// `maxprot` field in the segment header.
- maxprot: u32,
- /// `initprot` field in the segment header.
- initprot: u32,
- },
- /// COFF segment flags.
- Coff {
- /// `Characteristics` field in the segment header.
- characteristics: u32,
- },
-}
-
-/// Section flags that are specific to each file format.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum SectionFlags {
- /// No section flags.
- None,
- /// ELF section flags.
- Elf {
- /// `sh_flags` field in the section header.
- sh_flags: u64,
- },
- /// Mach-O section flags.
- MachO {
- /// `flags` field in the section header.
- flags: u32,
- },
- /// COFF section flags.
- Coff {
- /// `Characteristics` field in the section header.
- characteristics: u32,
- },
- /// XCOFF section flags.
- Xcoff {
- /// `s_flags` field in the section header.
- s_flags: u32,
- },
-}
-
-/// Symbol flags that are specific to each file format.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[non_exhaustive]
-pub enum SymbolFlags<Section, Symbol> {
- /// No symbol flags.
- None,
- /// ELF symbol flags.
- Elf {
- /// `st_info` field in the ELF symbol.
- st_info: u8,
- /// `st_other` field in the ELF symbol.
- st_other: u8,
- },
- /// Mach-O symbol flags.
- MachO {
- /// `n_desc` field in the Mach-O symbol.
- n_desc: u16,
- },
- /// COFF flags for a section symbol.
- CoffSection {
- /// `Selection` field in the auxiliary symbol for the section.
- selection: u8,
- /// `Number` field in the auxiliary symbol for the section.
- associative_section: Option<Section>,
- },
- /// XCOFF symbol flags.
- Xcoff {
- /// `n_sclass` field in the XCOFF symbol.
- n_sclass: u8,
- /// `x_smtyp` field in the CSECT auxiliary symbol.
- ///
- /// Only valid if `n_sclass` is `C_EXT`, `C_WEAKEXT`, or `C_HIDEXT`.
- x_smtyp: u8,
- /// `x_smclas` field in the CSECT auxiliary symbol.
- ///
- /// Only valid if `n_sclass` is `C_EXT`, `C_WEAKEXT`, or `C_HIDEXT`.
- x_smclas: u8,
- /// The containing csect for the symbol.
- ///
- /// Only valid if `x_smtyp` is `XTY_LD`.
- containing_csect: Option<Symbol>,
- },
-}