| 1 | use alloc::fmt; |
| 2 | use alloc::vec::Vec; |
| 3 | use core::fmt::Debug; |
| 4 | use core::slice; |
| 5 | use core::str; |
| 6 | |
| 7 | use crate::elf; |
| 8 | use crate::endian::{self, Endianness, U32}; |
| 9 | use crate::pod::Pod; |
| 10 | use crate::read::util::StringTable; |
| 11 | use crate::read::{ |
| 12 | self, ObjectSymbol, ObjectSymbolTable, ReadError, ReadRef, SectionIndex, SymbolFlags, |
| 13 | SymbolIndex, SymbolKind, SymbolMap, SymbolMapEntry, SymbolScope, SymbolSection, |
| 14 | }; |
| 15 | |
| 16 | use super::{FileHeader, SectionHeader, SectionTable}; |
| 17 | |
| 18 | /// A table of symbol entries in an ELF file. |
| 19 | /// |
| 20 | /// Also includes the string table used for the symbol names. |
| 21 | /// |
| 22 | /// Returned by [`SectionTable::symbols`]. |
| 23 | #[derive (Debug, Clone, Copy)] |
| 24 | pub struct SymbolTable<'data, Elf: FileHeader, R = &'data [u8]> |
| 25 | where |
| 26 | R: ReadRef<'data>, |
| 27 | { |
| 28 | section: SectionIndex, |
| 29 | string_section: SectionIndex, |
| 30 | shndx_section: SectionIndex, |
| 31 | symbols: &'data [Elf::Sym], |
| 32 | strings: StringTable<'data, R>, |
| 33 | shndx: &'data [U32<Elf::Endian>], |
| 34 | } |
| 35 | |
| 36 | impl<'data, Elf: FileHeader, R: ReadRef<'data>> Default for SymbolTable<'data, Elf, R> { |
| 37 | fn default() -> Self { |
| 38 | SymbolTable { |
| 39 | section: SectionIndex(0), |
| 40 | string_section: SectionIndex(0), |
| 41 | shndx_section: SectionIndex(0), |
| 42 | symbols: &[], |
| 43 | strings: Default::default(), |
| 44 | shndx: &[], |
| 45 | } |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | impl<'data, Elf: FileHeader, R: ReadRef<'data>> SymbolTable<'data, Elf, R> { |
| 50 | /// Parse the given symbol table section. |
| 51 | pub fn parse( |
| 52 | endian: Elf::Endian, |
| 53 | data: R, |
| 54 | sections: &SectionTable<'data, Elf, R>, |
| 55 | section_index: SectionIndex, |
| 56 | section: &Elf::SectionHeader, |
| 57 | ) -> read::Result<SymbolTable<'data, Elf, R>> { |
| 58 | debug_assert!( |
| 59 | section.sh_type(endian) == elf::SHT_DYNSYM |
| 60 | || section.sh_type(endian) == elf::SHT_SYMTAB |
| 61 | ); |
| 62 | |
| 63 | let symbols = section |
| 64 | .data_as_array(endian, data) |
| 65 | .read_error("Invalid ELF symbol table data" )?; |
| 66 | |
| 67 | let link = SectionIndex(section.sh_link(endian) as usize); |
| 68 | let strings = sections.strings(endian, data, link)?; |
| 69 | |
| 70 | let mut shndx_section = SectionIndex(0); |
| 71 | let mut shndx = &[][..]; |
| 72 | for (i, s) in sections.enumerate() { |
| 73 | if s.sh_type(endian) == elf::SHT_SYMTAB_SHNDX && s.link(endian) == section_index { |
| 74 | shndx_section = i; |
| 75 | shndx = s |
| 76 | .data_as_array(endian, data) |
| 77 | .read_error("Invalid ELF symtab_shndx data" )?; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | Ok(SymbolTable { |
| 82 | section: section_index, |
| 83 | string_section: link, |
| 84 | symbols, |
| 85 | strings, |
| 86 | shndx, |
| 87 | shndx_section, |
| 88 | }) |
| 89 | } |
| 90 | |
| 91 | /// Return the section index of this symbol table. |
| 92 | #[inline ] |
| 93 | pub fn section(&self) -> SectionIndex { |
| 94 | self.section |
| 95 | } |
| 96 | |
| 97 | /// Return the section index of the shndx table. |
| 98 | #[inline ] |
| 99 | pub fn shndx_section(&self) -> SectionIndex { |
| 100 | self.shndx_section |
| 101 | } |
| 102 | |
| 103 | /// Return the section index of the linked string table. |
| 104 | #[inline ] |
| 105 | pub fn string_section(&self) -> SectionIndex { |
| 106 | self.string_section |
| 107 | } |
| 108 | |
| 109 | /// Return the string table used for the symbol names. |
| 110 | #[inline ] |
| 111 | pub fn strings(&self) -> StringTable<'data, R> { |
| 112 | self.strings |
| 113 | } |
| 114 | |
| 115 | /// Return the symbol table. |
| 116 | #[inline ] |
| 117 | pub fn symbols(&self) -> &'data [Elf::Sym] { |
| 118 | self.symbols |
| 119 | } |
| 120 | |
| 121 | /// Iterate over the symbols. |
| 122 | /// |
| 123 | /// This includes the null symbol at index 0, which you will usually need to skip. |
| 124 | #[inline ] |
| 125 | pub fn iter(&self) -> slice::Iter<'data, Elf::Sym> { |
| 126 | self.symbols.iter() |
| 127 | } |
| 128 | |
| 129 | /// Iterate over the symbols and their indices. |
| 130 | /// |
| 131 | /// This includes the null symbol at index 0, which you will usually need to skip. |
| 132 | #[inline ] |
| 133 | pub fn enumerate(&self) -> impl Iterator<Item = (SymbolIndex, &'data Elf::Sym)> { |
| 134 | self.symbols |
| 135 | .iter() |
| 136 | .enumerate() |
| 137 | .map(|(i, sym)| (SymbolIndex(i), sym)) |
| 138 | } |
| 139 | |
| 140 | /// Return true if the symbol table is empty. |
| 141 | #[inline ] |
| 142 | pub fn is_empty(&self) -> bool { |
| 143 | self.symbols.is_empty() |
| 144 | } |
| 145 | |
| 146 | /// The number of symbols. |
| 147 | #[inline ] |
| 148 | pub fn len(&self) -> usize { |
| 149 | self.symbols.len() |
| 150 | } |
| 151 | |
| 152 | /// Get the symbol at the given index. |
| 153 | /// |
| 154 | /// Returns an error for null entry at index 0. |
| 155 | pub fn symbol(&self, index: SymbolIndex) -> read::Result<&'data Elf::Sym> { |
| 156 | if index == SymbolIndex(0) { |
| 157 | return Err(read::Error("Invalid ELF symbol index" )); |
| 158 | } |
| 159 | self.symbols |
| 160 | .get(index.0) |
| 161 | .read_error("Invalid ELF symbol index" ) |
| 162 | } |
| 163 | |
| 164 | /// Return the extended section index for the given symbol if present. |
| 165 | #[inline ] |
| 166 | pub fn shndx(&self, endian: Elf::Endian, index: SymbolIndex) -> Option<u32> { |
| 167 | self.shndx.get(index.0).map(|x| x.get(endian)) |
| 168 | } |
| 169 | |
| 170 | /// Return the section index for the given symbol. |
| 171 | /// |
| 172 | /// This uses the extended section index if present. |
| 173 | pub fn symbol_section( |
| 174 | &self, |
| 175 | endian: Elf::Endian, |
| 176 | symbol: &Elf::Sym, |
| 177 | index: SymbolIndex, |
| 178 | ) -> read::Result<Option<SectionIndex>> { |
| 179 | match symbol.st_shndx(endian) { |
| 180 | elf::SHN_UNDEF => Ok(None), |
| 181 | elf::SHN_XINDEX => { |
| 182 | let shndx = self |
| 183 | .shndx(endian, index) |
| 184 | .read_error("Missing ELF symbol extended index" )?; |
| 185 | if shndx == 0 { |
| 186 | Ok(None) |
| 187 | } else { |
| 188 | Ok(Some(SectionIndex(shndx as usize))) |
| 189 | } |
| 190 | } |
| 191 | shndx if shndx < elf::SHN_LORESERVE => Ok(Some(SectionIndex(shndx.into()))), |
| 192 | _ => Ok(None), |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | /// Return the symbol name for the given symbol. |
| 197 | pub fn symbol_name(&self, endian: Elf::Endian, symbol: &Elf::Sym) -> read::Result<&'data [u8]> { |
| 198 | symbol.name(endian, self.strings) |
| 199 | } |
| 200 | |
| 201 | /// Construct a map from addresses to a user-defined map entry. |
| 202 | pub fn map<Entry: SymbolMapEntry, F: Fn(&'data Elf::Sym) -> Option<Entry>>( |
| 203 | &self, |
| 204 | endian: Elf::Endian, |
| 205 | f: F, |
| 206 | ) -> SymbolMap<Entry> { |
| 207 | let mut symbols = Vec::with_capacity(self.symbols.len()); |
| 208 | for symbol in self.symbols { |
| 209 | if !symbol.is_definition(endian) { |
| 210 | continue; |
| 211 | } |
| 212 | if let Some(entry) = f(symbol) { |
| 213 | symbols.push(entry); |
| 214 | } |
| 215 | } |
| 216 | SymbolMap::new(symbols) |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | /// A symbol table in an [`ElfFile32`](super::ElfFile32). |
| 221 | pub type ElfSymbolTable32<'data, 'file, Endian = Endianness, R = &'data [u8]> = |
| 222 | ElfSymbolTable<'data, 'file, elf::FileHeader32<Endian>, R>; |
| 223 | /// A symbol table in an [`ElfFile32`](super::ElfFile32). |
| 224 | pub type ElfSymbolTable64<'data, 'file, Endian = Endianness, R = &'data [u8]> = |
| 225 | ElfSymbolTable<'data, 'file, elf::FileHeader64<Endian>, R>; |
| 226 | |
| 227 | /// A symbol table in an [`ElfFile`](super::ElfFile). |
| 228 | #[derive (Debug, Clone, Copy)] |
| 229 | pub struct ElfSymbolTable<'data, 'file, Elf, R = &'data [u8]> |
| 230 | where |
| 231 | Elf: FileHeader, |
| 232 | R: ReadRef<'data>, |
| 233 | { |
| 234 | pub(super) endian: Elf::Endian, |
| 235 | pub(super) symbols: &'file SymbolTable<'data, Elf, R>, |
| 236 | } |
| 237 | |
| 238 | impl<'data, 'file, Elf: FileHeader, R: ReadRef<'data>> read::private::Sealed |
| 239 | for ElfSymbolTable<'data, 'file, Elf, R> |
| 240 | { |
| 241 | } |
| 242 | |
| 243 | impl<'data, 'file, Elf: FileHeader, R: ReadRef<'data>> ObjectSymbolTable<'data> |
| 244 | for ElfSymbolTable<'data, 'file, Elf, R> |
| 245 | { |
| 246 | type Symbol = ElfSymbol<'data, 'file, Elf, R>; |
| 247 | type SymbolIterator = ElfSymbolIterator<'data, 'file, Elf, R>; |
| 248 | |
| 249 | fn symbols(&self) -> Self::SymbolIterator { |
| 250 | ElfSymbolIterator::new(self.endian, self.symbols) |
| 251 | } |
| 252 | |
| 253 | fn symbol_by_index(&self, index: SymbolIndex) -> read::Result<Self::Symbol> { |
| 254 | let symbol: &'data ::Sym = self.symbols.symbol(index)?; |
| 255 | Ok(ElfSymbol { |
| 256 | endian: self.endian, |
| 257 | symbols: self.symbols, |
| 258 | index, |
| 259 | symbol, |
| 260 | }) |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | /// An iterator for the symbols in an [`ElfFile32`](super::ElfFile32). |
| 265 | pub type ElfSymbolIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> = |
| 266 | ElfSymbolIterator<'data, 'file, elf::FileHeader32<Endian>, R>; |
| 267 | /// An iterator for the symbols in an [`ElfFile64`](super::ElfFile64). |
| 268 | pub type ElfSymbolIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> = |
| 269 | ElfSymbolIterator<'data, 'file, elf::FileHeader64<Endian>, R>; |
| 270 | |
| 271 | /// An iterator for the symbols in an [`ElfFile`](super::ElfFile). |
| 272 | pub struct ElfSymbolIterator<'data, 'file, Elf, R = &'data [u8]> |
| 273 | where |
| 274 | Elf: FileHeader, |
| 275 | R: ReadRef<'data>, |
| 276 | { |
| 277 | endian: Elf::Endian, |
| 278 | symbols: &'file SymbolTable<'data, Elf, R>, |
| 279 | index: SymbolIndex, |
| 280 | } |
| 281 | |
| 282 | impl<'data, 'file, Elf, R> ElfSymbolIterator<'data, 'file, Elf, R> |
| 283 | where |
| 284 | Elf: FileHeader, |
| 285 | R: ReadRef<'data>, |
| 286 | { |
| 287 | pub(super) fn new(endian: Elf::Endian, symbols: &'file SymbolTable<'data, Elf, R>) -> Self { |
| 288 | ElfSymbolIterator { |
| 289 | endian, |
| 290 | symbols, |
| 291 | index: SymbolIndex(1), |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | impl<'data, 'file, Elf: FileHeader, R: ReadRef<'data>> fmt::Debug |
| 297 | for ElfSymbolIterator<'data, 'file, Elf, R> |
| 298 | { |
| 299 | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { |
| 300 | f.debug_struct(name:"ElfSymbolIterator" ).finish() |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | impl<'data, 'file, Elf: FileHeader, R: ReadRef<'data>> Iterator |
| 305 | for ElfSymbolIterator<'data, 'file, Elf, R> |
| 306 | { |
| 307 | type Item = ElfSymbol<'data, 'file, Elf, R>; |
| 308 | |
| 309 | fn next(&mut self) -> Option<Self::Item> { |
| 310 | let index: SymbolIndex = self.index; |
| 311 | let symbol: &::Sym = self.symbols.symbols.get(index.0)?; |
| 312 | self.index.0 += 1; |
| 313 | Some(ElfSymbol { |
| 314 | endian: self.endian, |
| 315 | symbols: self.symbols, |
| 316 | index, |
| 317 | symbol, |
| 318 | }) |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | /// A symbol in an [`ElfFile32`](super::ElfFile32). |
| 323 | pub type ElfSymbol32<'data, 'file, Endian = Endianness, R = &'data [u8]> = |
| 324 | ElfSymbol<'data, 'file, elf::FileHeader32<Endian>, R>; |
| 325 | /// A symbol in an [`ElfFile64`](super::ElfFile64). |
| 326 | pub type ElfSymbol64<'data, 'file, Endian = Endianness, R = &'data [u8]> = |
| 327 | ElfSymbol<'data, 'file, elf::FileHeader64<Endian>, R>; |
| 328 | |
| 329 | /// A symbol in an [`ElfFile`](super::ElfFile). |
| 330 | /// |
| 331 | /// Most functionality is provided by the [`ObjectSymbol`] trait implementation. |
| 332 | #[derive (Debug, Clone, Copy)] |
| 333 | pub struct ElfSymbol<'data, 'file, Elf, R = &'data [u8]> |
| 334 | where |
| 335 | Elf: FileHeader, |
| 336 | R: ReadRef<'data>, |
| 337 | { |
| 338 | pub(super) endian: Elf::Endian, |
| 339 | pub(super) symbols: &'file SymbolTable<'data, Elf, R>, |
| 340 | pub(super) index: SymbolIndex, |
| 341 | pub(super) symbol: &'data Elf::Sym, |
| 342 | } |
| 343 | |
| 344 | impl<'data, 'file, Elf: FileHeader, R: ReadRef<'data>> ElfSymbol<'data, 'file, Elf, R> { |
| 345 | /// Get the endianness of the ELF file. |
| 346 | pub fn endian(&self) -> Elf::Endian { |
| 347 | self.endian |
| 348 | } |
| 349 | |
| 350 | /// Return a reference to the raw symbol structure. |
| 351 | #[inline ] |
| 352 | #[deprecated (note = "Use `elf_symbol` instead" )] |
| 353 | pub fn raw_symbol(&self) -> &'data Elf::Sym { |
| 354 | self.symbol |
| 355 | } |
| 356 | |
| 357 | /// Get the raw ELF symbol structure. |
| 358 | pub fn elf_symbol(&self) -> &'data Elf::Sym { |
| 359 | self.symbol |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | impl<'data, 'file, Elf: FileHeader, R: ReadRef<'data>> read::private::Sealed |
| 364 | for ElfSymbol<'data, 'file, Elf, R> |
| 365 | { |
| 366 | } |
| 367 | |
| 368 | impl<'data, 'file, Elf: FileHeader, R: ReadRef<'data>> ObjectSymbol<'data> |
| 369 | for ElfSymbol<'data, 'file, Elf, R> |
| 370 | { |
| 371 | #[inline ] |
| 372 | fn index(&self) -> SymbolIndex { |
| 373 | self.index |
| 374 | } |
| 375 | |
| 376 | fn name_bytes(&self) -> read::Result<&'data [u8]> { |
| 377 | self.symbol.name(self.endian, self.symbols.strings()) |
| 378 | } |
| 379 | |
| 380 | fn name(&self) -> read::Result<&'data str> { |
| 381 | let name = self.name_bytes()?; |
| 382 | str::from_utf8(name) |
| 383 | .ok() |
| 384 | .read_error("Non UTF-8 ELF symbol name" ) |
| 385 | } |
| 386 | |
| 387 | #[inline ] |
| 388 | fn address(&self) -> u64 { |
| 389 | self.symbol.st_value(self.endian).into() |
| 390 | } |
| 391 | |
| 392 | #[inline ] |
| 393 | fn size(&self) -> u64 { |
| 394 | self.symbol.st_size(self.endian).into() |
| 395 | } |
| 396 | |
| 397 | fn kind(&self) -> SymbolKind { |
| 398 | match self.symbol.st_type() { |
| 399 | elf::STT_NOTYPE => SymbolKind::Unknown, |
| 400 | elf::STT_OBJECT | elf::STT_COMMON => SymbolKind::Data, |
| 401 | elf::STT_FUNC | elf::STT_GNU_IFUNC => SymbolKind::Text, |
| 402 | elf::STT_SECTION => SymbolKind::Section, |
| 403 | elf::STT_FILE => SymbolKind::File, |
| 404 | elf::STT_TLS => SymbolKind::Tls, |
| 405 | _ => SymbolKind::Unknown, |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | fn section(&self) -> SymbolSection { |
| 410 | match self.symbol.st_shndx(self.endian) { |
| 411 | elf::SHN_UNDEF => SymbolSection::Undefined, |
| 412 | elf::SHN_ABS => { |
| 413 | if self.symbol.st_type() == elf::STT_FILE { |
| 414 | SymbolSection::None |
| 415 | } else { |
| 416 | SymbolSection::Absolute |
| 417 | } |
| 418 | } |
| 419 | elf::SHN_COMMON => SymbolSection::Common, |
| 420 | elf::SHN_XINDEX => match self.symbols.shndx(self.endian, self.index) { |
| 421 | Some(0) => SymbolSection::None, |
| 422 | Some(index) => SymbolSection::Section(SectionIndex(index as usize)), |
| 423 | None => SymbolSection::Unknown, |
| 424 | }, |
| 425 | index if index < elf::SHN_LORESERVE => { |
| 426 | SymbolSection::Section(SectionIndex(index as usize)) |
| 427 | } |
| 428 | _ => SymbolSection::Unknown, |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | #[inline ] |
| 433 | fn is_undefined(&self) -> bool { |
| 434 | self.symbol.is_undefined(self.endian) |
| 435 | } |
| 436 | |
| 437 | #[inline ] |
| 438 | fn is_definition(&self) -> bool { |
| 439 | self.symbol.is_definition(self.endian) |
| 440 | } |
| 441 | |
| 442 | #[inline ] |
| 443 | fn is_common(&self) -> bool { |
| 444 | self.symbol.is_common(self.endian) |
| 445 | } |
| 446 | |
| 447 | #[inline ] |
| 448 | fn is_weak(&self) -> bool { |
| 449 | self.symbol.is_weak() |
| 450 | } |
| 451 | |
| 452 | fn scope(&self) -> SymbolScope { |
| 453 | if self.symbol.st_shndx(self.endian) == elf::SHN_UNDEF { |
| 454 | SymbolScope::Unknown |
| 455 | } else { |
| 456 | match self.symbol.st_bind() { |
| 457 | elf::STB_LOCAL => SymbolScope::Compilation, |
| 458 | elf::STB_GLOBAL | elf::STB_WEAK => { |
| 459 | if self.symbol.st_visibility() == elf::STV_HIDDEN { |
| 460 | SymbolScope::Linkage |
| 461 | } else { |
| 462 | SymbolScope::Dynamic |
| 463 | } |
| 464 | } |
| 465 | _ => SymbolScope::Unknown, |
| 466 | } |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | #[inline ] |
| 471 | fn is_global(&self) -> bool { |
| 472 | !self.symbol.is_local() |
| 473 | } |
| 474 | |
| 475 | #[inline ] |
| 476 | fn is_local(&self) -> bool { |
| 477 | self.symbol.is_local() |
| 478 | } |
| 479 | |
| 480 | #[inline ] |
| 481 | fn flags(&self) -> SymbolFlags<SectionIndex, SymbolIndex> { |
| 482 | SymbolFlags::Elf { |
| 483 | st_info: self.symbol.st_info(), |
| 484 | st_other: self.symbol.st_other(), |
| 485 | } |
| 486 | } |
| 487 | } |
| 488 | |
| 489 | /// A trait for generic access to [`elf::Sym32`] and [`elf::Sym64`]. |
| 490 | #[allow (missing_docs)] |
| 491 | pub trait Sym: Debug + Pod { |
| 492 | type Word: Into<u64>; |
| 493 | type Endian: endian::Endian; |
| 494 | |
| 495 | fn st_name(&self, endian: Self::Endian) -> u32; |
| 496 | fn st_info(&self) -> u8; |
| 497 | fn st_bind(&self) -> u8; |
| 498 | fn st_type(&self) -> u8; |
| 499 | fn st_other(&self) -> u8; |
| 500 | fn st_visibility(&self) -> u8; |
| 501 | fn st_shndx(&self, endian: Self::Endian) -> u16; |
| 502 | fn st_value(&self, endian: Self::Endian) -> Self::Word; |
| 503 | fn st_size(&self, endian: Self::Endian) -> Self::Word; |
| 504 | |
| 505 | /// Parse the symbol name from the string table. |
| 506 | fn name<'data, R: ReadRef<'data>>( |
| 507 | &self, |
| 508 | endian: Self::Endian, |
| 509 | strings: StringTable<'data, R>, |
| 510 | ) -> read::Result<&'data [u8]> { |
| 511 | strings |
| 512 | .get(self.st_name(endian)) |
| 513 | .read_error("Invalid ELF symbol name offset" ) |
| 514 | } |
| 515 | |
| 516 | /// Return true if the symbol section is `SHN_UNDEF`. |
| 517 | #[inline ] |
| 518 | fn is_undefined(&self, endian: Self::Endian) -> bool { |
| 519 | self.st_shndx(endian) == elf::SHN_UNDEF |
| 520 | } |
| 521 | |
| 522 | /// Return true if the symbol is a definition of a function or data object. |
| 523 | fn is_definition(&self, endian: Self::Endian) -> bool { |
| 524 | let shndx = self.st_shndx(endian); |
| 525 | if shndx == elf::SHN_UNDEF || (shndx >= elf::SHN_LORESERVE && shndx != elf::SHN_XINDEX) { |
| 526 | return false; |
| 527 | } |
| 528 | match self.st_type() { |
| 529 | elf::STT_NOTYPE => self.st_size(endian).into() != 0, |
| 530 | elf::STT_FUNC | elf::STT_OBJECT => true, |
| 531 | _ => false, |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | /// Return true if the symbol section is `SHN_COMMON`. |
| 536 | fn is_common(&self, endian: Self::Endian) -> bool { |
| 537 | self.st_shndx(endian) == elf::SHN_COMMON |
| 538 | } |
| 539 | |
| 540 | /// Return true if the symbol section is `SHN_ABS`. |
| 541 | fn is_absolute(&self, endian: Self::Endian) -> bool { |
| 542 | self.st_shndx(endian) == elf::SHN_ABS |
| 543 | } |
| 544 | |
| 545 | /// Return true if the symbol binding is `STB_LOCAL`. |
| 546 | fn is_local(&self) -> bool { |
| 547 | self.st_bind() == elf::STB_LOCAL |
| 548 | } |
| 549 | |
| 550 | /// Return true if the symbol binding is `STB_WEAK`. |
| 551 | fn is_weak(&self) -> bool { |
| 552 | self.st_bind() == elf::STB_WEAK |
| 553 | } |
| 554 | } |
| 555 | |
| 556 | impl<Endian: endian::Endian> Sym for elf::Sym32<Endian> { |
| 557 | type Word = u32; |
| 558 | type Endian = Endian; |
| 559 | |
| 560 | #[inline ] |
| 561 | fn st_name(&self, endian: Self::Endian) -> u32 { |
| 562 | self.st_name.get(endian) |
| 563 | } |
| 564 | |
| 565 | #[inline ] |
| 566 | fn st_info(&self) -> u8 { |
| 567 | self.st_info |
| 568 | } |
| 569 | |
| 570 | #[inline ] |
| 571 | fn st_bind(&self) -> u8 { |
| 572 | self.st_bind() |
| 573 | } |
| 574 | |
| 575 | #[inline ] |
| 576 | fn st_type(&self) -> u8 { |
| 577 | self.st_type() |
| 578 | } |
| 579 | |
| 580 | #[inline ] |
| 581 | fn st_other(&self) -> u8 { |
| 582 | self.st_other |
| 583 | } |
| 584 | |
| 585 | #[inline ] |
| 586 | fn st_visibility(&self) -> u8 { |
| 587 | self.st_visibility() |
| 588 | } |
| 589 | |
| 590 | #[inline ] |
| 591 | fn st_shndx(&self, endian: Self::Endian) -> u16 { |
| 592 | self.st_shndx.get(endian) |
| 593 | } |
| 594 | |
| 595 | #[inline ] |
| 596 | fn st_value(&self, endian: Self::Endian) -> Self::Word { |
| 597 | self.st_value.get(endian) |
| 598 | } |
| 599 | |
| 600 | #[inline ] |
| 601 | fn st_size(&self, endian: Self::Endian) -> Self::Word { |
| 602 | self.st_size.get(endian) |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | impl<Endian: endian::Endian> Sym for elf::Sym64<Endian> { |
| 607 | type Word = u64; |
| 608 | type Endian = Endian; |
| 609 | |
| 610 | #[inline ] |
| 611 | fn st_name(&self, endian: Self::Endian) -> u32 { |
| 612 | self.st_name.get(endian) |
| 613 | } |
| 614 | |
| 615 | #[inline ] |
| 616 | fn st_info(&self) -> u8 { |
| 617 | self.st_info |
| 618 | } |
| 619 | |
| 620 | #[inline ] |
| 621 | fn st_bind(&self) -> u8 { |
| 622 | self.st_bind() |
| 623 | } |
| 624 | |
| 625 | #[inline ] |
| 626 | fn st_type(&self) -> u8 { |
| 627 | self.st_type() |
| 628 | } |
| 629 | |
| 630 | #[inline ] |
| 631 | fn st_other(&self) -> u8 { |
| 632 | self.st_other |
| 633 | } |
| 634 | |
| 635 | #[inline ] |
| 636 | fn st_visibility(&self) -> u8 { |
| 637 | self.st_visibility() |
| 638 | } |
| 639 | |
| 640 | #[inline ] |
| 641 | fn st_shndx(&self, endian: Self::Endian) -> u16 { |
| 642 | self.st_shndx.get(endian) |
| 643 | } |
| 644 | |
| 645 | #[inline ] |
| 646 | fn st_value(&self, endian: Self::Endian) -> Self::Word { |
| 647 | self.st_value.get(endian) |
| 648 | } |
| 649 | |
| 650 | #[inline ] |
| 651 | fn st_size(&self, endian: Self::Endian) -> Self::Word { |
| 652 | self.st_size.get(endian) |
| 653 | } |
| 654 | } |
| 655 | |