2020-10-04 12:00:33 +03:00
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#pragma once
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2020-11-09 06:30:13 +03:00
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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2020-10-09 14:47:45 +03:00
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#include "tbb/concurrent_hash_map.h"
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2020-10-26 13:51:06 +03:00
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#include "tbb/global_control.h"
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2020-10-10 10:49:02 +03:00
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#include "tbb/parallel_for_each.h"
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2020-11-06 04:11:19 +03:00
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#include "tbb/parallel_invoke.h"
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2020-11-06 02:49:41 +03:00
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#include "tbb/parallel_reduce.h"
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2020-10-28 13:49:58 +03:00
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#include "tbb/spin_mutex.h"
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2020-10-24 12:58:21 +03:00
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#include "tbb/task_group.h"
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2020-10-04 12:00:33 +03:00
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2020-10-19 17:37:29 +03:00
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#include <algorithm>
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2020-10-10 13:15:16 +03:00
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#include <atomic>
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2020-12-11 10:51:20 +03:00
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#include <cassert>
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2020-10-04 12:00:33 +03:00
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#include <cstdint>
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2020-12-10 16:32:47 +03:00
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#include <iostream>
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2020-10-21 05:55:03 +03:00
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#include <mutex>
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2020-12-10 06:54:10 +03:00
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#include <span>
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2020-10-04 12:00:33 +03:00
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#include <string>
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2020-12-10 07:44:58 +03:00
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#include <string_view>
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2020-10-04 12:00:33 +03:00
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2020-11-03 14:45:45 +03:00
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#define SECTOR_SIZE 512
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#define PAGE_SIZE 4096
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2020-11-11 10:53:41 +03:00
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#define GOT_SIZE 8
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#define PLT_SIZE 16
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2020-11-03 14:45:45 +03:00
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2020-11-05 02:36:10 +03:00
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#define LIKELY(x) __builtin_expect((x), 1)
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#define UNLIKELY(x) __builtin_expect((x), 0)
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2020-11-03 14:45:45 +03:00
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typedef uint8_t u8;
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typedef uint16_t u16;
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typedef uint32_t u32;
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typedef uint64_t u64;
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typedef int8_t i8;
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typedef int16_t i16;
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typedef int32_t i32;
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typedef int64_t i64;
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2020-11-08 06:26:40 +03:00
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class InputChunk;
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2020-11-24 10:22:32 +03:00
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class InputFile;
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2020-11-03 14:45:45 +03:00
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class InputSection;
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2020-11-08 07:01:46 +03:00
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class MergeableSection;
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2020-11-24 10:22:32 +03:00
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class MergedSection;
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2020-11-03 14:45:45 +03:00
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class ObjectFile;
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2020-11-04 08:03:01 +03:00
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class OutputChunk;
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2020-11-03 14:45:45 +03:00
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class OutputSection;
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2020-11-24 10:22:32 +03:00
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class SharedFile;
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class Symbol;
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2020-10-08 11:01:54 +03:00
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2020-10-04 12:00:33 +03:00
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struct Config {
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2020-12-10 08:32:42 +03:00
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std::string dynamic_linker = "/lib64/ld-linux-x86-64.so.2";
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std::string output;
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2020-11-30 10:43:47 +03:00
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bool as_needed = false;
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2020-12-01 15:43:30 +03:00
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bool export_dynamic = false;
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2020-11-04 12:47:13 +03:00
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bool is_static = false;
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2020-11-11 03:02:36 +03:00
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bool print_map = false;
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2020-12-11 06:43:14 +03:00
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bool trace = false;
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2020-11-12 07:33:57 +03:00
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int filler = -1;
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2020-12-11 06:43:14 +03:00
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int thread_count = -1;
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2020-11-20 13:27:39 +03:00
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std::string sysroot;
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2020-12-10 07:44:58 +03:00
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std::vector<std::string> library_paths;
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std::vector<std::string> rpaths;
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std::vector<std::string> globals;
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2020-11-17 09:05:53 +03:00
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u64 image_base = 0x200000;
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2020-10-04 12:00:33 +03:00
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};
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2020-11-29 05:06:11 +03:00
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inline Config config;
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2020-12-10 08:32:42 +03:00
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[[noreturn]] inline void error(std::string msg) {
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2020-10-27 09:10:34 +03:00
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static std::mutex mu;
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2020-10-28 13:51:49 +03:00
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std::lock_guard lock(mu);
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2020-12-10 16:32:47 +03:00
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std::cerr << msg << "\n";
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2020-10-04 12:00:33 +03:00
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exit(1);
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}
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2020-11-30 11:52:08 +03:00
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#define unreachable() \
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2020-12-10 08:32:42 +03:00
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error("internal error at " + std::string(__FILE__) + ":" + std::to_string(__LINE__))
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2020-11-30 11:52:08 +03:00
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2020-12-11 03:15:08 +03:00
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std::string to_string(InputFile *);
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2020-10-19 15:32:57 +03:00
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2020-10-12 07:30:34 +03:00
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//
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2020-10-19 15:32:57 +03:00
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// Interned string
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2020-10-12 07:30:34 +03:00
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//
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2020-10-19 12:13:55 +03:00
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namespace tbb {
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template<>
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2020-12-10 07:44:58 +03:00
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struct tbb_hash_compare<std::string_view> {
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static size_t hash(const std::string_view& k) {
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2020-12-10 16:35:36 +03:00
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return std::hash<std::string_view>()(k);
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2020-10-19 12:13:55 +03:00
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}
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2020-12-10 07:44:58 +03:00
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static bool equal(const std::string_view& k1, const std::string_view& k2) {
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2020-10-19 12:13:55 +03:00
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return k1 == k2;
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}
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};
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}
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2020-10-19 15:32:57 +03:00
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template<typename ValueT>
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class ConcurrentMap {
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public:
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2020-12-10 07:44:58 +03:00
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typedef tbb::concurrent_hash_map<std::string_view, ValueT> MapT;
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2020-10-19 15:32:57 +03:00
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2020-12-10 07:44:58 +03:00
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ValueT *insert(std::string_view key, const ValueT &val) {
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2020-10-28 03:39:31 +03:00
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typename MapT::const_accessor acc;
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2020-10-19 15:32:57 +03:00
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map.insert(acc, std::make_pair(key, val));
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2020-10-28 03:39:31 +03:00
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return const_cast<ValueT *>(&acc->second);
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2020-10-19 15:32:57 +03:00
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}
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2020-11-07 16:07:19 +03:00
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size_t size() const { return map.size(); }
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2020-10-19 15:32:57 +03:00
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private:
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MapT map;
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};
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2020-12-10 09:10:18 +03:00
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//
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// ELF
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//
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2020-12-10 09:31:54 +03:00
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static constexpr u32 SHN_UNDEF = 0;
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static constexpr u32 SHN_ABS = 0xfff1;
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static constexpr u32 SHN_COMMON = 0xfff2;
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2020-12-10 15:38:37 +03:00
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static constexpr u32 SHT_NULL = 0;
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static constexpr u32 SHT_PROGBITS = 1;
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static constexpr u32 SHT_SYMTAB = 2;
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static constexpr u32 SHT_STRTAB = 3;
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static constexpr u32 SHT_RELA = 4;
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static constexpr u32 SHT_HASH = 5;
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static constexpr u32 SHT_DYNAMIC = 6;
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static constexpr u32 SHT_NOTE = 7;
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static constexpr u32 SHT_NOBITS = 8;
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static constexpr u32 SHT_REL = 9;
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static constexpr u32 SHT_SHLIB = 10;
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static constexpr u32 SHT_DYNSYM = 11;
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static constexpr u32 SHT_INIT_ARRAY = 14;
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static constexpr u32 SHT_FINI_ARRAY = 15;
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static constexpr u32 SHT_PREINIT_ARRAY = 16;
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static constexpr u32 SHT_GROUP = 17;
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static constexpr u32 SHT_SYMTAB_SHNDX = 18;
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static constexpr u32 SHT_GNU_HASH = 0x6ffffff6;
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static constexpr u32 SHT_GNU_VERDEF = 0x6ffffffd;
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static constexpr u32 SHT_GNU_VERNEED = 0x6ffffffe;
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static constexpr u32 SHT_GNU_VERSYM = 0x6fffffff;
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static constexpr u32 SHF_WRITE = 0x1;
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static constexpr u32 SHF_ALLOC = 0x2;
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static constexpr u32 SHF_EXECINSTR = 0x4;
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static constexpr u32 SHF_MERGE = 0x10;
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static constexpr u32 SHF_STRINGS = 0x20;
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static constexpr u32 SHF_INFO_LINK = 0x40U;
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static constexpr u32 SHF_LINK_ORDER = 0x80U;
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static constexpr u32 SHF_GROUP = 0x200U;
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static constexpr u32 SHF_TLS = 0x400U;
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static constexpr u32 SHF_COMPRESSED = 0x800U;
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static constexpr u32 SHF_EXCLUDE = 0x80000000U;
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static constexpr u32 GRP_COMDAT = 1;
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static constexpr u32 STT_NOTYPE = 0;
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static constexpr u32 STT_OBJECT = 1;
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static constexpr u32 STT_FUNC = 2;
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static constexpr u32 STT_SECTION = 3;
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static constexpr u32 STT_FILE = 4;
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static constexpr u32 STT_COMMON = 5;
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static constexpr u32 STT_TLS = 6;
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static constexpr u32 STT_GNU_IFUNC = 10;
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static constexpr u32 STB_LOCAL = 0;
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static constexpr u32 STB_GLOBAL = 1;
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static constexpr u32 STB_WEAK = 2;
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static constexpr u32 STB_GNU_UNIQUE = 10;
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static constexpr u32 STV_DEFAULT = 0;
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static constexpr u32 STV_INTERNAL = 1;
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static constexpr u32 STV_HIDDEN = 2;
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static constexpr u32 STV_PROTECTED = 3;
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static constexpr u32 VER_NDX_LOCAL = 0;
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static constexpr u32 VER_NDX_GLOBAL = 1;
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static constexpr u32 PT_NULL = 0;
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static constexpr u32 PT_LOAD = 1;
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static constexpr u32 PT_DYNAMIC = 2;
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static constexpr u32 PT_INTERP = 3;
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static constexpr u32 PT_NOTE = 4;
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static constexpr u32 PT_SHLIB = 5;
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static constexpr u32 PT_PHDR = 6;
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static constexpr u32 PT_TLS = 7;
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static constexpr u32 PF_X = 1;
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static constexpr u32 PF_W = 2;
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static constexpr u32 PF_R = 4;
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static constexpr u32 ET_NONE = 0;
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static constexpr u32 ET_REL = 1;
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static constexpr u32 ET_EXEC = 2;
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static constexpr u32 ET_DYN = 3;
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static constexpr u32 ELFDATA2LSB = 1;
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static constexpr u32 ELFDATA2MSB = 2;
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static constexpr u32 ELFCLASS32 = 1;
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static constexpr u32 ELFCLASS64 = 2;
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static constexpr u32 EV_CURRENT = 1;
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static constexpr u32 EM_X86_64 = 62;
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static constexpr u32 EI_CLASS = 4;
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static constexpr u32 EI_DATA = 5;
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static constexpr u32 EI_VERSION = 6;
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static constexpr u32 EI_OSABI = 7;
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static constexpr u32 EI_ABIVERSION = 8;
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static constexpr u32 DT_NULL = 0;
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static constexpr u32 DT_NEEDED = 1;
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static constexpr u32 DT_PLTRELSZ = 2;
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static constexpr u32 DT_PLTGOT = 3;
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static constexpr u32 DT_HASH = 4;
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static constexpr u32 DT_STRTAB = 5;
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static constexpr u32 DT_SYMTAB = 6;
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static constexpr u32 DT_RELA = 7;
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static constexpr u32 DT_RELASZ = 8;
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static constexpr u32 DT_RELAENT = 9;
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static constexpr u32 DT_STRSZ = 10;
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static constexpr u32 DT_SYMENT = 11;
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static constexpr u32 DT_INIT = 12;
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static constexpr u32 DT_FINI = 13;
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static constexpr u32 DT_SONAME = 14;
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static constexpr u32 DT_RPATH = 15;
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static constexpr u32 DT_SYMBOLIC = 16;
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static constexpr u32 DT_REL = 17;
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static constexpr u32 DT_RELSZ = 18;
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static constexpr u32 DT_RELENT = 19;
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static constexpr u32 DT_PLTREL = 20;
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static constexpr u32 DT_DEBUG = 21;
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static constexpr u32 DT_TEXTREL = 22;
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static constexpr u32 DT_JMPREL = 23;
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static constexpr u32 DT_BIND_NOW = 24;
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static constexpr u32 DT_INIT_ARRAY = 25;
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static constexpr u32 DT_FINI_ARRAY = 26;
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static constexpr u32 DT_INIT_ARRAYSZ = 27;
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static constexpr u32 DT_FINI_ARRAYSZ = 28;
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static constexpr u32 DT_RUNPATH = 29;
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static constexpr u32 DT_VERSYM = 0x6FFFFFF0;
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static constexpr u32 DT_VERDEF = 0x6FFFFFFC;
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static constexpr u32 DT_VERDEFNUM = 0x6FFFFFFD;
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static constexpr u32 DT_VERNEED = 0x6FFFFFFE;
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static constexpr u32 DT_VERNEEDNUM = 0x6FFFFFFF;
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static constexpr u32 R_X86_64_NONE = 0;
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static constexpr u32 R_X86_64_64 = 1;
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static constexpr u32 R_X86_64_PC32 = 2;
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static constexpr u32 R_X86_64_GOT32 = 3;
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static constexpr u32 R_X86_64_PLT32 = 4;
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static constexpr u32 R_X86_64_COPY = 5;
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static constexpr u32 R_X86_64_GLOB_DAT = 6;
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static constexpr u32 R_X86_64_JUMP_SLOT = 7;
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static constexpr u32 R_X86_64_RELATIVE = 8;
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static constexpr u32 R_X86_64_GOTPCREL = 9;
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static constexpr u32 R_X86_64_32 = 10;
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static constexpr u32 R_X86_64_32S = 11;
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static constexpr u32 R_X86_64_16 = 12;
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static constexpr u32 R_X86_64_PC16 = 13;
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static constexpr u32 R_X86_64_8 = 14;
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static constexpr u32 R_X86_64_PC8 = 15;
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static constexpr u32 R_X86_64_DTPMOD64 = 16;
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static constexpr u32 R_X86_64_DTPOFF64 = 17;
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static constexpr u32 R_X86_64_TPOFF64 = 18;
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static constexpr u32 R_X86_64_TLSGD = 19;
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static constexpr u32 R_X86_64_TLSLD = 20;
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static constexpr u32 R_X86_64_DTPOFF32 = 21;
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static constexpr u32 R_X86_64_GOTTPOFF = 22;
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static constexpr u32 R_X86_64_TPOFF32 = 23;
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static constexpr u32 R_X86_64_PC64 = 24;
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static constexpr u32 R_X86_64_GOTOFF64 = 25;
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static constexpr u32 R_X86_64_GOTPC32 = 26;
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static constexpr u32 R_X86_64_GOT64 = 27;
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static constexpr u32 R_X86_64_GOTPCREL64 = 28;
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static constexpr u32 R_X86_64_GOTPC64 = 29;
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static constexpr u32 R_X86_64_GOTPLT64 = 30;
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static constexpr u32 R_X86_64_PLTOFF64 = 31;
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static constexpr u32 R_X86_64_SIZE32 = 32;
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static constexpr u32 R_X86_64_SIZE64 = 33;
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static constexpr u32 R_X86_64_GOTPC32_TLSDESC = 34;
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static constexpr u32 R_X86_64_TLSDESC_CALL = 35;
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static constexpr u32 R_X86_64_TLSDESC = 36;
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static constexpr u32 R_X86_64_IRELATIVE = 37;
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static constexpr u32 R_X86_64_GOTPCRELX = 41;
|
|
|
|
static constexpr u32 R_X86_64_REX_GOTPCRELX = 42;
|
|
|
|
|
2020-12-10 09:10:18 +03:00
|
|
|
struct ElfSym {
|
2020-12-10 09:31:54 +03:00
|
|
|
bool is_defined() const { return !is_undef(); }
|
|
|
|
bool is_undef() const { return st_shndx == SHN_UNDEF; }
|
|
|
|
bool is_abs() const { return st_shndx == SHN_ABS; }
|
|
|
|
bool is_common() const { return st_shndx == SHN_COMMON; }
|
2020-12-10 09:10:18 +03:00
|
|
|
|
|
|
|
u32 st_name;
|
|
|
|
|
|
|
|
union {
|
|
|
|
u8 st_info;
|
|
|
|
struct {
|
|
|
|
u8 st_type : 4;
|
|
|
|
u8 st_bind : 4;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
|
2020-12-10 09:31:54 +03:00
|
|
|
union {
|
|
|
|
u8 st_other;
|
|
|
|
u8 st_visibility : 2;
|
|
|
|
};
|
|
|
|
|
|
|
|
u16 st_shndx;
|
2020-12-10 09:10:18 +03:00
|
|
|
u64 st_value;
|
|
|
|
u64 st_size;
|
|
|
|
};
|
|
|
|
|
2020-12-10 09:59:24 +03:00
|
|
|
struct ElfShdr {
|
|
|
|
u32 sh_name;
|
|
|
|
u32 sh_type;
|
|
|
|
u64 sh_flags;
|
|
|
|
u64 sh_addr;
|
|
|
|
u64 sh_offset;
|
|
|
|
u64 sh_size;
|
|
|
|
u32 sh_link;
|
|
|
|
u32 sh_info;
|
|
|
|
u64 sh_addralign;
|
|
|
|
u64 sh_entsize;
|
|
|
|
};
|
|
|
|
|
2020-12-10 11:44:30 +03:00
|
|
|
struct ElfEhdr {
|
|
|
|
u8 e_ident[16];
|
|
|
|
u16 e_type;
|
|
|
|
u16 e_machine;
|
|
|
|
u32 e_version;
|
|
|
|
u64 e_entry;
|
|
|
|
u64 e_phoff;
|
|
|
|
u64 e_shoff;
|
|
|
|
u32 e_flags;
|
|
|
|
u16 e_ehsize;
|
|
|
|
u16 e_phentsize;
|
|
|
|
u16 e_phnum;
|
|
|
|
u16 e_shentsize;
|
|
|
|
u16 e_shnum;
|
|
|
|
u16 e_shstrndx;
|
|
|
|
};
|
|
|
|
|
2020-12-10 15:13:02 +03:00
|
|
|
struct ElfPhdr {
|
|
|
|
u32 p_type;
|
|
|
|
u32 p_flags;
|
|
|
|
u64 p_offset;
|
|
|
|
u64 p_vaddr;
|
|
|
|
u64 p_paddr;
|
|
|
|
u64 p_filesz;
|
|
|
|
u64 p_memsz;
|
|
|
|
u64 p_align;
|
|
|
|
};
|
|
|
|
|
2020-12-10 13:49:10 +03:00
|
|
|
struct ElfRela {
|
|
|
|
u64 r_offset;
|
2020-12-10 13:54:01 +03:00
|
|
|
|
|
|
|
union {
|
|
|
|
u64 r_info;
|
|
|
|
struct {
|
|
|
|
u32 r_type;
|
|
|
|
u32 r_sym;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
|
2020-12-10 13:49:10 +03:00
|
|
|
i64 r_addend;
|
|
|
|
};
|
|
|
|
|
2020-12-10 15:15:47 +03:00
|
|
|
struct ElfDyn {
|
|
|
|
i64 d_tag;
|
|
|
|
union {
|
|
|
|
u64 d_val;
|
|
|
|
u64 d_ptr;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
|
2020-12-10 15:17:42 +03:00
|
|
|
struct ElfVerneed {
|
|
|
|
u16 vn_version;
|
|
|
|
u16 vn_cnt;
|
|
|
|
u32 vn_file;
|
|
|
|
u32 vn_aux;
|
|
|
|
u32 vn_next;
|
|
|
|
};
|
|
|
|
|
|
|
|
struct ElfVernaux {
|
|
|
|
u32 vna_hash;
|
|
|
|
u16 vna_flags;
|
|
|
|
u16 vna_other;
|
|
|
|
u32 vna_name;
|
|
|
|
u32 vna_next;
|
|
|
|
};
|
|
|
|
|
2020-12-10 15:19:52 +03:00
|
|
|
struct ElfVerdef {
|
|
|
|
u16 vd_version;
|
|
|
|
u16 vd_flags;
|
|
|
|
u16 vd_ndx;
|
|
|
|
u16 vd_cnt;
|
|
|
|
u32 vd_hash;
|
|
|
|
u32 vd_aux;
|
|
|
|
u32 vd_next;
|
|
|
|
};
|
|
|
|
|
|
|
|
struct ElfVerdaux {
|
|
|
|
u32 vda_name;
|
|
|
|
u32 vda_next;
|
|
|
|
};
|
|
|
|
|
2020-12-10 11:44:30 +03:00
|
|
|
struct MemoryMappedFile {
|
|
|
|
MemoryMappedFile(std::string name, u8 *data, u64 size)
|
|
|
|
: name(name), data(data), size(size) {}
|
|
|
|
|
|
|
|
std::string name;
|
|
|
|
u8 *data;
|
|
|
|
u64 size;
|
|
|
|
};
|
|
|
|
|
2020-10-19 15:32:57 +03:00
|
|
|
//
|
|
|
|
// Symbol
|
|
|
|
//
|
|
|
|
|
2020-11-07 04:49:34 +03:00
|
|
|
struct StringPiece {
|
2020-12-10 07:44:58 +03:00
|
|
|
StringPiece(std::string_view data) : data(data) {}
|
2020-11-07 04:49:34 +03:00
|
|
|
|
|
|
|
StringPiece(const StringPiece &other)
|
2020-11-07 15:53:21 +03:00
|
|
|
: data(other.data), isec(other.isec.load()),
|
2020-11-07 13:23:14 +03:00
|
|
|
output_offset(other.output_offset) {}
|
2020-11-07 04:49:34 +03:00
|
|
|
|
2020-11-07 14:05:51 +03:00
|
|
|
inline u64 get_addr() const;
|
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
std::string_view data;
|
2020-11-08 08:13:59 +03:00
|
|
|
std::atomic<MergeableSection *> isec = ATOMIC_VAR_INIT(nullptr);
|
2020-11-10 11:18:10 +03:00
|
|
|
u32 output_offset = -1;
|
2020-11-07 04:49:34 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
struct StringPieceRef {
|
2020-11-07 16:21:41 +03:00
|
|
|
StringPiece *piece = nullptr;
|
|
|
|
u32 input_offset = 0;
|
2020-11-24 13:26:26 +03:00
|
|
|
i32 addend = 0;
|
2020-11-07 04:49:34 +03:00
|
|
|
};
|
|
|
|
|
2020-10-12 07:30:34 +03:00
|
|
|
class Symbol {
|
|
|
|
public:
|
2020-12-10 07:44:58 +03:00
|
|
|
Symbol(std::string_view name)
|
2020-11-29 11:47:51 +03:00
|
|
|
: name(name), is_placeholder(false), is_imported(false),
|
2020-11-06 05:44:27 +03:00
|
|
|
is_weak(false), is_undef_weak(false), traced(false) {}
|
2020-11-03 15:51:40 +03:00
|
|
|
|
2020-11-29 04:22:14 +03:00
|
|
|
Symbol(const Symbol &other) : Symbol(other.name) {}
|
2020-10-12 07:30:34 +03:00
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
static Symbol *intern(std::string_view name) {
|
2020-10-25 08:42:44 +03:00
|
|
|
static ConcurrentMap<Symbol> map;
|
2020-11-13 06:30:27 +03:00
|
|
|
return map.insert(name, Symbol(name));
|
2020-10-25 08:42:44 +03:00
|
|
|
}
|
|
|
|
|
2020-11-06 06:50:26 +03:00
|
|
|
inline u64 get_addr() const;
|
2020-11-15 07:01:38 +03:00
|
|
|
inline u64 get_got_addr() const;
|
|
|
|
inline u64 get_gotplt_addr() const;
|
2020-11-21 04:48:51 +03:00
|
|
|
inline u64 get_gottpoff_addr() const;
|
2020-11-21 04:48:23 +03:00
|
|
|
inline u64 get_tlsgd_addr() const;
|
|
|
|
inline u64 get_tlsld_addr() const;
|
2020-11-15 07:01:38 +03:00
|
|
|
inline u64 get_plt_addr() const;
|
2020-11-06 06:50:26 +03:00
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
std::string_view name;
|
2020-11-24 10:22:32 +03:00
|
|
|
InputFile *file = nullptr;
|
2020-12-10 09:10:18 +03:00
|
|
|
const ElfSym *esym = nullptr;
|
2020-11-08 09:56:17 +03:00
|
|
|
InputSection *input_section = nullptr;
|
2020-11-07 16:20:49 +03:00
|
|
|
StringPieceRef piece_ref;
|
2020-10-23 06:09:27 +03:00
|
|
|
|
2020-11-26 07:34:42 +03:00
|
|
|
u64 value = -1;
|
2020-11-15 07:01:38 +03:00
|
|
|
u32 got_idx = -1;
|
|
|
|
u32 gotplt_idx = -1;
|
2020-11-21 04:48:51 +03:00
|
|
|
u32 gottpoff_idx = -1;
|
2020-11-21 04:48:23 +03:00
|
|
|
u32 tlsgd_idx = -1;
|
|
|
|
u32 tlsld_idx = -1;
|
2020-11-15 07:01:38 +03:00
|
|
|
u32 plt_idx = -1;
|
|
|
|
u32 relplt_idx = -1;
|
2020-11-15 08:07:40 +03:00
|
|
|
u32 dynsym_idx = -1;
|
2020-11-16 16:25:58 +03:00
|
|
|
u32 dynstr_offset = -1;
|
2020-11-25 11:20:48 +03:00
|
|
|
u32 copyrel_offset = -1;
|
2020-11-04 08:41:40 +03:00
|
|
|
u32 shndx = 0;
|
2020-11-28 16:04:23 +03:00
|
|
|
u16 ver_idx = 0;
|
2020-10-30 11:59:45 +03:00
|
|
|
|
2020-11-03 16:24:50 +03:00
|
|
|
tbb::spin_mutex mu;
|
|
|
|
|
2020-11-05 07:05:27 +03:00
|
|
|
u8 is_placeholder : 1;
|
2020-11-20 02:45:58 +03:00
|
|
|
u8 is_imported : 1;
|
2020-11-03 16:21:55 +03:00
|
|
|
u8 is_weak : 1;
|
|
|
|
u8 is_undef_weak : 1;
|
2020-11-05 02:31:32 +03:00
|
|
|
u8 traced : 1;
|
2020-11-03 15:51:40 +03:00
|
|
|
|
2020-11-17 13:34:37 +03:00
|
|
|
enum {
|
|
|
|
NEEDS_GOT = 1 << 0,
|
2020-11-20 03:46:49 +03:00
|
|
|
NEEDS_PLT = 1 << 1,
|
2020-11-17 13:34:37 +03:00
|
|
|
NEEDS_GOTTPOFF = 1 << 2,
|
|
|
|
NEEDS_TLSGD = 1 << 3,
|
|
|
|
NEEDS_TLSLD = 1 << 4,
|
2020-11-25 11:20:48 +03:00
|
|
|
NEEDS_COPYREL = 1 << 5,
|
2020-11-17 13:34:37 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
std::atomic_uint8_t flags = ATOMIC_VAR_INIT(0);
|
2020-12-10 15:38:37 +03:00
|
|
|
u8 type = STT_NOTYPE;
|
2020-10-12 07:30:34 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
//
|
2020-11-06 02:49:41 +03:00
|
|
|
// input_sections.cc
|
2020-10-12 07:30:34 +03:00
|
|
|
//
|
|
|
|
|
2020-11-08 06:26:40 +03:00
|
|
|
class InputChunk {
|
2020-10-08 11:01:54 +03:00
|
|
|
public:
|
2020-11-17 07:56:40 +03:00
|
|
|
virtual void copy_buf() {}
|
2020-11-29 13:58:02 +03:00
|
|
|
inline u64 get_addr() const;
|
2020-10-23 03:21:40 +03:00
|
|
|
|
2020-10-19 17:37:29 +03:00
|
|
|
ObjectFile *file;
|
2020-12-10 09:59:24 +03:00
|
|
|
const ElfShdr &shdr;
|
2020-11-08 06:26:40 +03:00
|
|
|
OutputSection *output_section = nullptr;
|
2020-11-07 06:14:37 +03:00
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
std::string_view name;
|
2020-11-07 15:53:21 +03:00
|
|
|
u32 offset;
|
2020-11-08 08:13:59 +03:00
|
|
|
|
|
|
|
protected:
|
2020-12-10 09:59:24 +03:00
|
|
|
InputChunk(ObjectFile *file, const ElfShdr &shdr, std::string_view name);
|
2020-11-08 06:26:40 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
class InputSection : public InputChunk {
|
|
|
|
public:
|
2020-12-10 09:59:24 +03:00
|
|
|
InputSection(ObjectFile *file, const ElfShdr &shdr, std::string_view name)
|
2020-11-29 11:47:51 +03:00
|
|
|
: InputChunk(file, shdr, name) {}
|
2020-11-08 06:26:40 +03:00
|
|
|
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-11-26 12:09:32 +03:00
|
|
|
void scan_relocations();
|
|
|
|
void report_undefined_symbols();
|
2020-11-08 06:26:40 +03:00
|
|
|
|
2020-12-10 13:54:01 +03:00
|
|
|
std::span<ElfRela> rels;
|
2020-11-08 06:26:40 +03:00
|
|
|
std::vector<StringPieceRef> rel_pieces;
|
2020-11-08 09:56:17 +03:00
|
|
|
MergeableSection *mergeable = nullptr;
|
2020-12-01 15:07:00 +03:00
|
|
|
bool is_comdat_member = false;
|
2020-12-01 11:16:28 +03:00
|
|
|
bool is_alive = true;
|
2020-11-08 08:13:59 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
class MergeableSection : public InputChunk {
|
|
|
|
public:
|
2020-12-10 14:11:45 +03:00
|
|
|
MergeableSection(InputSection *isec, std::string_view contents);
|
2020-11-07 15:53:21 +03:00
|
|
|
|
2020-11-08 08:13:59 +03:00
|
|
|
MergedSection &parent;
|
2020-11-07 15:53:21 +03:00
|
|
|
std::vector<StringPieceRef> pieces;
|
2020-11-08 08:13:59 +03:00
|
|
|
u32 size = 0;
|
2020-10-08 11:01:54 +03:00
|
|
|
};
|
|
|
|
|
2020-12-11 03:15:08 +03:00
|
|
|
std::string to_string(InputChunk *isec);
|
2020-10-19 17:37:29 +03:00
|
|
|
|
2020-10-12 08:17:34 +03:00
|
|
|
//
|
2020-10-20 09:33:40 +03:00
|
|
|
// output_chunks.cc
|
2020-10-12 08:17:34 +03:00
|
|
|
//
|
|
|
|
|
2020-10-15 12:30:06 +03:00
|
|
|
class OutputChunk {
|
2020-10-15 11:06:01 +03:00
|
|
|
public:
|
2020-11-08 10:09:01 +03:00
|
|
|
enum Kind : u8 { HEADER, REGULAR, SYNTHETIC };
|
2020-11-08 10:05:36 +03:00
|
|
|
|
|
|
|
OutputChunk(Kind kind) : kind(kind) { shdr.sh_addralign = 1; }
|
2020-10-25 08:17:05 +03:00
|
|
|
|
2020-11-17 07:56:40 +03:00
|
|
|
virtual void copy_buf() {}
|
2020-11-25 11:20:48 +03:00
|
|
|
virtual void update_shdr() {}
|
2020-10-25 09:17:43 +03:00
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
std::string_view name;
|
2020-10-29 09:30:41 +03:00
|
|
|
int shndx = 0;
|
2020-11-29 13:58:02 +03:00
|
|
|
Kind kind;
|
2020-10-26 04:03:17 +03:00
|
|
|
bool starts_new_ptload = false;
|
2020-12-10 09:59:24 +03:00
|
|
|
ElfShdr shdr = {};
|
2020-10-12 08:17:34 +03:00
|
|
|
};
|
|
|
|
|
2020-11-16 18:17:01 +03:00
|
|
|
// ELF header
|
|
|
|
class OutputEhdr : public OutputChunk {
|
|
|
|
public:
|
|
|
|
OutputEhdr() : OutputChunk(HEADER) {
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-12-10 15:13:02 +03:00
|
|
|
shdr.sh_size = sizeof(ElfEhdr);
|
2020-11-16 18:17:01 +03:00
|
|
|
}
|
|
|
|
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-11-16 18:17:01 +03:00
|
|
|
};
|
|
|
|
|
2020-11-16 18:23:51 +03:00
|
|
|
// Section header
|
|
|
|
class OutputShdr : public OutputChunk {
|
|
|
|
public:
|
|
|
|
OutputShdr() : OutputChunk(HEADER) {
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-11-16 18:23:51 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
void update_shdr() override;
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-11-16 18:23:51 +03:00
|
|
|
};
|
|
|
|
|
2020-11-16 18:33:41 +03:00
|
|
|
// Program header
|
|
|
|
class OutputPhdr : public OutputChunk {
|
2020-10-15 11:06:01 +03:00
|
|
|
public:
|
2020-11-16 18:33:41 +03:00
|
|
|
OutputPhdr() : OutputChunk(HEADER) {
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-11-08 10:05:36 +03:00
|
|
|
}
|
2020-11-16 18:33:41 +03:00
|
|
|
|
|
|
|
void update_shdr() override;
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-10-15 11:06:01 +03:00
|
|
|
};
|
|
|
|
|
2020-11-16 19:05:01 +03:00
|
|
|
class InterpSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
InterpSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".interp";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_PROGBITS;
|
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-11-16 19:05:01 +03:00
|
|
|
shdr.sh_size = config.dynamic_linker.size() + 1;
|
|
|
|
}
|
|
|
|
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-11-16 19:05:01 +03:00
|
|
|
};
|
|
|
|
|
2020-10-16 10:38:03 +03:00
|
|
|
// Sections
|
2020-10-15 12:30:06 +03:00
|
|
|
class OutputSection : public OutputChunk {
|
|
|
|
public:
|
2020-12-10 07:44:58 +03:00
|
|
|
static OutputSection *get_instance(std::string_view name, u64 flags, u32 type);
|
2020-10-22 10:35:17 +03:00
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
OutputSection(std::string_view name, u32 type, u64 flags)
|
2020-11-08 10:09:01 +03:00
|
|
|
: OutputChunk(REGULAR) {
|
2020-10-22 13:35:16 +03:00
|
|
|
this->name = name;
|
2020-10-25 07:17:10 +03:00
|
|
|
shdr.sh_type = type;
|
2020-11-13 06:43:59 +03:00
|
|
|
shdr.sh_flags = flags;
|
2020-10-28 08:06:35 +03:00
|
|
|
idx = instances.size();
|
|
|
|
instances.push_back(this);
|
2020-10-21 05:28:43 +03:00
|
|
|
}
|
|
|
|
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-10-26 07:34:15 +03:00
|
|
|
|
2020-11-06 15:17:35 +03:00
|
|
|
static inline std::vector<OutputSection *> instances;
|
2020-10-29 12:31:06 +03:00
|
|
|
|
2020-11-08 10:09:01 +03:00
|
|
|
std::vector<InputChunk *> members;
|
2020-10-29 12:31:06 +03:00
|
|
|
u32 idx;
|
2020-10-15 12:30:06 +03:00
|
|
|
};
|
|
|
|
|
2020-11-11 02:36:44 +03:00
|
|
|
class SpecialSection : public OutputChunk {
|
|
|
|
public:
|
2020-12-10 07:44:58 +03:00
|
|
|
SpecialSection(std::string_view name, u32 type, u64 flags, u32 align = 1, u32 entsize = 0)
|
2020-11-11 02:36:44 +03:00
|
|
|
: OutputChunk(SYNTHETIC) {
|
2020-11-11 03:47:05 +03:00
|
|
|
this->name = name;
|
2020-11-11 02:36:44 +03:00
|
|
|
shdr.sh_type = type;
|
2020-11-13 06:43:59 +03:00
|
|
|
shdr.sh_flags = flags;
|
2020-11-11 02:36:44 +03:00
|
|
|
shdr.sh_addralign = align;
|
|
|
|
shdr.sh_entsize = entsize;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2020-11-18 11:11:58 +03:00
|
|
|
class GotSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
GotSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".got";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_PROGBITS;
|
|
|
|
shdr.sh_flags = SHF_ALLOC | SHF_WRITE;
|
2020-11-18 11:11:58 +03:00
|
|
|
shdr.sh_addralign = GOT_SIZE;
|
|
|
|
}
|
2020-11-18 14:29:24 +03:00
|
|
|
|
2020-11-21 06:49:28 +03:00
|
|
|
void add_got_symbol(Symbol *sym);
|
2020-11-21 04:48:51 +03:00
|
|
|
void add_gottpoff_symbol(Symbol *sym);
|
2020-11-21 04:48:23 +03:00
|
|
|
void add_tlsgd_symbol(Symbol *sym);
|
|
|
|
void add_tlsld_symbol(Symbol *sym);
|
2020-11-18 14:29:24 +03:00
|
|
|
void copy_buf() override;
|
|
|
|
|
|
|
|
std::vector<Symbol *> got_syms;
|
2020-11-21 04:48:51 +03:00
|
|
|
std::vector<Symbol *> gottpoff_syms;
|
2020-11-21 04:48:23 +03:00
|
|
|
std::vector<Symbol *> tlsgd_syms;
|
|
|
|
std::vector<Symbol *> tlsld_syms;
|
2020-11-18 11:11:58 +03:00
|
|
|
};
|
|
|
|
|
2020-11-13 06:43:59 +03:00
|
|
|
class GotPltSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
GotPltSection() : OutputChunk(SYNTHETIC) {
|
2020-11-16 19:05:01 +03:00
|
|
|
name = ".got.plt";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_PROGBITS;
|
|
|
|
shdr.sh_flags = SHF_ALLOC | SHF_WRITE;
|
2020-11-13 06:43:59 +03:00
|
|
|
shdr.sh_addralign = GOT_SIZE;
|
2020-12-07 10:12:19 +03:00
|
|
|
shdr.sh_size = GOT_SIZE * 3;
|
2020-11-13 06:43:59 +03:00
|
|
|
}
|
|
|
|
|
2020-11-18 15:45:49 +03:00
|
|
|
void copy_buf() override;
|
2020-11-13 06:43:59 +03:00
|
|
|
};
|
|
|
|
|
2020-11-01 11:46:08 +03:00
|
|
|
class PltSection : public OutputChunk {
|
|
|
|
public:
|
2020-11-08 10:05:36 +03:00
|
|
|
PltSection() : OutputChunk(SYNTHETIC) {
|
2020-11-16 19:05:01 +03:00
|
|
|
name = ".plt";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_PROGBITS;
|
|
|
|
shdr.sh_flags = SHF_ALLOC | SHF_EXECINSTR;
|
2020-11-01 11:46:08 +03:00
|
|
|
shdr.sh_addralign = 8;
|
2020-11-13 06:30:27 +03:00
|
|
|
shdr.sh_size = PLT_SIZE;
|
2020-11-01 11:46:08 +03:00
|
|
|
}
|
|
|
|
|
2020-11-18 15:45:49 +03:00
|
|
|
void add_symbol(Symbol *sym);
|
|
|
|
void copy_buf() override;
|
2020-11-17 15:02:14 +03:00
|
|
|
|
2020-11-18 15:45:49 +03:00
|
|
|
std::vector<Symbol *> symbols;
|
2020-11-01 11:46:08 +03:00
|
|
|
};
|
|
|
|
|
2020-11-01 10:22:47 +03:00
|
|
|
class RelPltSection : public OutputChunk {
|
2020-11-01 02:55:13 +03:00
|
|
|
public:
|
2020-11-08 10:05:36 +03:00
|
|
|
RelPltSection() : OutputChunk(SYNTHETIC) {
|
2020-11-16 19:05:01 +03:00
|
|
|
name = ".rela.plt";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_RELA;
|
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-12-10 15:11:10 +03:00
|
|
|
shdr.sh_entsize = sizeof(ElfRela);
|
2020-11-01 02:55:13 +03:00
|
|
|
shdr.sh_addralign = 8;
|
|
|
|
}
|
2020-11-17 07:34:02 +03:00
|
|
|
|
|
|
|
void update_shdr() override;
|
2020-11-18 15:45:49 +03:00
|
|
|
void copy_buf() override;
|
2020-11-01 02:55:13 +03:00
|
|
|
};
|
|
|
|
|
2020-11-17 07:30:33 +03:00
|
|
|
class RelDynSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
RelDynSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".rela.dyn";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_RELA;
|
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-12-10 15:11:10 +03:00
|
|
|
shdr.sh_entsize = sizeof(ElfRela);
|
2020-11-17 07:30:33 +03:00
|
|
|
shdr.sh_addralign = 8;
|
|
|
|
}
|
|
|
|
|
|
|
|
void update_shdr() override;
|
2020-11-18 14:29:24 +03:00
|
|
|
void copy_buf() override;
|
2020-11-17 07:30:33 +03:00
|
|
|
};
|
|
|
|
|
2020-11-12 16:10:47 +03:00
|
|
|
class StrtabSection : public OutputChunk {
|
|
|
|
public:
|
2020-11-19 10:13:19 +03:00
|
|
|
StrtabSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".strtab";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_STRTAB;
|
2020-11-12 16:10:47 +03:00
|
|
|
shdr.sh_addralign = 1;
|
|
|
|
shdr.sh_size = 1;
|
|
|
|
}
|
|
|
|
|
2020-11-29 12:58:36 +03:00
|
|
|
void update_shdr() override;
|
2020-11-12 16:10:47 +03:00
|
|
|
};
|
|
|
|
|
2020-11-17 06:20:56 +03:00
|
|
|
class ShstrtabSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
ShstrtabSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".shstrtab";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_STRTAB;
|
2020-11-17 06:20:56 +03:00
|
|
|
shdr.sh_addralign = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
void update_shdr() override;
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-11-17 06:20:56 +03:00
|
|
|
};
|
|
|
|
|
2020-11-17 07:19:54 +03:00
|
|
|
class DynstrSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
DynstrSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".dynstr";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_STRTAB;
|
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-11-17 07:19:54 +03:00
|
|
|
shdr.sh_size = 1;
|
|
|
|
shdr.sh_addralign = 1;
|
|
|
|
}
|
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
u32 add_string(std::string_view str);
|
|
|
|
u32 find_string(std::string_view str);
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-11-17 07:19:54 +03:00
|
|
|
|
|
|
|
private:
|
2020-12-10 07:44:58 +03:00
|
|
|
std::vector<std::string_view> contents;
|
2020-11-17 07:19:54 +03:00
|
|
|
};
|
|
|
|
|
2020-11-16 18:43:32 +03:00
|
|
|
class DynamicSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
DynamicSection() : OutputChunk(SYNTHETIC) {
|
2020-11-16 19:05:01 +03:00
|
|
|
name = ".dynamic";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_DYNAMIC;
|
|
|
|
shdr.sh_flags = SHF_ALLOC | SHF_WRITE;
|
2020-11-16 18:43:32 +03:00
|
|
|
shdr.sh_addralign = 8;
|
2020-12-10 15:15:47 +03:00
|
|
|
shdr.sh_entsize = sizeof(ElfDyn);
|
2020-11-16 18:43:32 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
void update_shdr() override;
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-11-16 18:43:32 +03:00
|
|
|
};
|
|
|
|
|
2020-10-27 12:59:56 +03:00
|
|
|
class SymtabSection : public OutputChunk {
|
|
|
|
public:
|
2020-11-17 07:32:22 +03:00
|
|
|
SymtabSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".symtab";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_SYMTAB;
|
2020-12-10 09:10:18 +03:00
|
|
|
shdr.sh_entsize = sizeof(ElfSym);
|
2020-10-27 12:59:56 +03:00
|
|
|
shdr.sh_addralign = 8;
|
2020-12-10 09:10:18 +03:00
|
|
|
shdr.sh_size = sizeof(ElfSym);
|
2020-10-27 12:59:56 +03:00
|
|
|
}
|
|
|
|
|
2020-11-17 07:32:22 +03:00
|
|
|
void update_shdr() override;
|
2020-11-17 08:28:53 +03:00
|
|
|
void copy_buf() override;
|
2020-10-27 12:59:56 +03:00
|
|
|
};
|
|
|
|
|
2020-11-16 17:40:01 +03:00
|
|
|
class DynsymSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
DynsymSection() : OutputChunk(SYNTHETIC) {
|
2020-11-16 19:05:01 +03:00
|
|
|
name = ".dynsym";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_DYNSYM;
|
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-12-10 09:10:18 +03:00
|
|
|
shdr.sh_entsize = sizeof(ElfSym);
|
2020-11-16 17:40:01 +03:00
|
|
|
shdr.sh_addralign = 8;
|
2020-12-10 09:10:18 +03:00
|
|
|
shdr.sh_size = sizeof(ElfSym);
|
2020-11-16 17:40:01 +03:00
|
|
|
shdr.sh_info = 1;
|
|
|
|
}
|
|
|
|
|
2020-11-17 14:22:52 +03:00
|
|
|
void add_symbol(Symbol *sym);
|
2020-11-16 19:30:24 +03:00
|
|
|
void update_shdr() override;
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-11-16 17:40:01 +03:00
|
|
|
|
2020-11-16 17:48:20 +03:00
|
|
|
std::vector<Symbol *> symbols;
|
2020-11-16 17:40:01 +03:00
|
|
|
};
|
|
|
|
|
2020-11-11 15:12:35 +03:00
|
|
|
class HashSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
HashSection() : OutputChunk(SYNTHETIC) {
|
2020-11-16 19:05:01 +03:00
|
|
|
name = ".hash";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_HASH;
|
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-11-11 15:12:35 +03:00
|
|
|
shdr.sh_entsize = 4;
|
|
|
|
shdr.sh_addralign = 4;
|
|
|
|
}
|
|
|
|
|
2020-11-16 18:10:38 +03:00
|
|
|
void update_shdr() override;
|
2020-11-17 07:56:40 +03:00
|
|
|
void copy_buf() override;
|
2020-11-12 11:15:59 +03:00
|
|
|
|
2020-11-12 14:38:46 +03:00
|
|
|
private:
|
2020-12-10 07:44:58 +03:00
|
|
|
static u32 hash(std::string_view name);
|
2020-11-11 15:12:35 +03:00
|
|
|
};
|
|
|
|
|
2020-11-07 15:53:21 +03:00
|
|
|
class MergedSection : public OutputChunk {
|
2020-11-07 03:57:23 +03:00
|
|
|
public:
|
2020-12-10 07:44:58 +03:00
|
|
|
static MergedSection *get_instance(std::string_view name, u64 flags, u32 type);
|
2020-11-07 14:29:06 +03:00
|
|
|
|
2020-11-07 15:53:21 +03:00
|
|
|
static inline std::vector<MergedSection *> instances;
|
2020-11-07 03:57:23 +03:00
|
|
|
|
2020-11-07 04:45:28 +03:00
|
|
|
ConcurrentMap<StringPiece> map;
|
2020-11-07 04:13:19 +03:00
|
|
|
|
|
|
|
private:
|
2020-12-10 07:44:58 +03:00
|
|
|
MergedSection(std::string_view name, u64 flags, u32 type)
|
2020-11-08 10:05:36 +03:00
|
|
|
: OutputChunk(SYNTHETIC) {
|
|
|
|
this->name = name;
|
|
|
|
shdr.sh_flags = flags;
|
|
|
|
shdr.sh_type = type;
|
|
|
|
shdr.sh_addralign = 1;
|
|
|
|
}
|
2020-11-07 03:57:23 +03:00
|
|
|
};
|
|
|
|
|
2020-11-25 11:20:48 +03:00
|
|
|
class CopyrelSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
CopyrelSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".bss";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_NOBITS;
|
|
|
|
shdr.sh_flags = SHF_ALLOC | SHF_WRITE;
|
2020-11-25 11:20:48 +03:00
|
|
|
shdr.sh_addralign = 32;
|
|
|
|
}
|
|
|
|
|
|
|
|
void add_symbol(Symbol *sym);
|
|
|
|
|
|
|
|
std::vector<Symbol *> symbols;
|
|
|
|
};
|
|
|
|
|
2020-11-27 11:32:25 +03:00
|
|
|
class VersymSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
VersymSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".gnu.version";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_GNU_VERSYM;
|
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-11-29 10:37:14 +03:00
|
|
|
shdr.sh_entsize = 2;
|
2020-11-27 11:32:25 +03:00
|
|
|
shdr.sh_addralign = 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
void update_shdr() override;
|
|
|
|
void copy_buf() override;
|
2020-11-29 05:40:57 +03:00
|
|
|
|
|
|
|
std::vector<u16> contents;
|
2020-11-27 11:32:25 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
class VerneedSection : public OutputChunk {
|
|
|
|
public:
|
|
|
|
VerneedSection() : OutputChunk(SYNTHETIC) {
|
|
|
|
name = ".gnu.version_r";
|
2020-12-10 15:38:37 +03:00
|
|
|
shdr.sh_type = SHT_GNU_VERNEED;
|
|
|
|
shdr.sh_flags = SHF_ALLOC;
|
2020-11-29 07:42:27 +03:00
|
|
|
shdr.sh_addralign = 8;
|
2020-11-27 11:32:25 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
void update_shdr() override;
|
|
|
|
void copy_buf() override;
|
2020-11-29 05:40:57 +03:00
|
|
|
|
|
|
|
std::vector<u8> contents;
|
2020-11-27 11:32:25 +03:00
|
|
|
};
|
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
bool is_c_identifier(std::string_view name);
|
2020-12-10 15:13:02 +03:00
|
|
|
std::vector<ElfPhdr> create_phdr();
|
2020-11-04 04:43:05 +03:00
|
|
|
|
2020-10-12 07:30:34 +03:00
|
|
|
//
|
2020-11-03 04:54:10 +03:00
|
|
|
// object_file.cc
|
2020-10-12 07:30:34 +03:00
|
|
|
//
|
|
|
|
|
2020-10-23 02:40:54 +03:00
|
|
|
struct ComdatGroup {
|
2020-10-29 10:27:11 +03:00
|
|
|
ComdatGroup(ObjectFile *file, u32 i)
|
2020-10-23 02:40:54 +03:00
|
|
|
: file(file), section_idx(i) {}
|
|
|
|
ComdatGroup(const ComdatGroup &other)
|
2020-10-23 06:43:22 +03:00
|
|
|
: file(other.file.load()), section_idx(other.section_idx) {}
|
2020-10-23 02:40:54 +03:00
|
|
|
|
2020-10-23 06:43:22 +03:00
|
|
|
std::atomic<ObjectFile *> file;
|
2020-10-29 10:27:11 +03:00
|
|
|
u32 section_idx;
|
2020-10-23 02:40:54 +03:00
|
|
|
};
|
|
|
|
|
2020-11-24 10:22:32 +03:00
|
|
|
class InputFile {
|
|
|
|
public:
|
2020-12-12 06:44:22 +03:00
|
|
|
InputFile(MemoryMappedFile mb);
|
2020-11-24 10:22:32 +03:00
|
|
|
|
2020-12-10 08:27:38 +03:00
|
|
|
MemoryMappedFile mb;
|
2020-12-12 06:41:09 +03:00
|
|
|
ElfEhdr &ehdr;
|
2020-12-12 06:36:16 +03:00
|
|
|
std::span<ElfShdr> elf_sections;
|
2020-11-24 10:22:32 +03:00
|
|
|
std::vector<Symbol *> symbols;
|
2020-12-12 06:41:09 +03:00
|
|
|
|
|
|
|
std::string name;
|
|
|
|
bool is_dso;
|
|
|
|
u32 priority;
|
2020-11-24 10:22:32 +03:00
|
|
|
std::atomic_bool is_alive = ATOMIC_VAR_INIT(false);
|
2020-12-12 06:38:30 +03:00
|
|
|
|
2020-12-12 06:46:24 +03:00
|
|
|
std::string_view get_string(const ElfShdr &shdr) const;
|
|
|
|
std::string_view get_string(u32 idx) const;
|
2020-12-12 06:38:30 +03:00
|
|
|
|
2020-12-12 06:46:24 +03:00
|
|
|
protected:
|
|
|
|
template<typename T> std::span<T> get_data(const ElfShdr &shdr) const;
|
|
|
|
template<typename T> std::span<T> get_data(u32 idx) const;
|
2020-11-24 10:22:32 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
class ObjectFile : public InputFile {
|
2020-10-04 12:00:33 +03:00
|
|
|
public:
|
2020-12-10 08:27:38 +03:00
|
|
|
ObjectFile(MemoryMappedFile mb, std::string_view archive_name);
|
2020-10-04 12:00:33 +03:00
|
|
|
|
2020-10-09 14:47:45 +03:00
|
|
|
void parse();
|
2020-11-07 12:06:09 +03:00
|
|
|
void initialize_mergeable_sections();
|
2020-11-05 06:20:16 +03:00
|
|
|
void resolve_symbols();
|
2020-11-30 10:43:47 +03:00
|
|
|
void mark_live_objects(tbb::parallel_do_feeder<ObjectFile *> &feeder);
|
2020-11-19 10:09:07 +03:00
|
|
|
void handle_undefined_weak_symbols();
|
2020-11-08 12:17:24 +03:00
|
|
|
void resolve_comdat_groups();
|
2020-10-19 15:50:33 +03:00
|
|
|
void eliminate_duplicate_comdat_groups();
|
2020-11-07 15:53:21 +03:00
|
|
|
void assign_mergeable_string_offsets();
|
2020-10-27 06:50:25 +03:00
|
|
|
void convert_common_symbols();
|
2020-10-27 14:58:28 +03:00
|
|
|
void compute_symtab();
|
2020-11-29 12:31:19 +03:00
|
|
|
void write_symtab();
|
2020-10-27 13:03:57 +03:00
|
|
|
|
2020-11-17 07:48:11 +03:00
|
|
|
static ObjectFile *create_internal_file();
|
2020-11-03 13:33:46 +03:00
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
std::string_view archive_name;
|
2020-11-08 06:10:08 +03:00
|
|
|
std::vector<InputSection *> sections;
|
2020-12-10 12:23:13 +03:00
|
|
|
std::span<ElfSym> elf_syms;
|
2020-11-07 05:41:14 +03:00
|
|
|
int first_global = 0;
|
2020-11-05 06:34:59 +03:00
|
|
|
const bool is_in_archive;
|
2020-11-26 12:09:32 +03:00
|
|
|
std::atomic_bool has_error = ATOMIC_VAR_INIT(false);
|
2020-10-09 17:26:26 +03:00
|
|
|
|
2020-11-29 12:45:33 +03:00
|
|
|
u64 local_symtab_offset = 0;
|
2020-10-29 10:27:11 +03:00
|
|
|
u64 local_symtab_size = 0;
|
2020-11-29 12:45:33 +03:00
|
|
|
u64 global_symtab_offset = 0;
|
2020-10-29 10:27:11 +03:00
|
|
|
u64 global_symtab_size = 0;
|
2020-11-29 12:45:33 +03:00
|
|
|
u64 strtab_offset = 0;
|
|
|
|
u64 strtab_size = 0;
|
2020-10-27 14:58:28 +03:00
|
|
|
|
2020-11-08 08:13:59 +03:00
|
|
|
std::vector<MergeableSection> mergeable_sections;
|
2020-11-07 15:53:21 +03:00
|
|
|
|
2020-10-09 14:47:45 +03:00
|
|
|
private:
|
2020-10-19 14:05:34 +03:00
|
|
|
void initialize_sections();
|
|
|
|
void initialize_symbols();
|
2020-11-08 08:13:59 +03:00
|
|
|
std::vector<StringPieceRef> read_string_pieces(InputSection *isec);
|
2020-11-24 10:22:32 +03:00
|
|
|
void maybe_override_symbol(Symbol &sym, int symidx);
|
2020-10-19 14:05:34 +03:00
|
|
|
|
2020-12-10 14:11:45 +03:00
|
|
|
std::vector<std::pair<ComdatGroup *, std::span<u32>>> comdat_groups;
|
2020-11-03 08:53:32 +03:00
|
|
|
std::vector<Symbol> local_symbols;
|
2020-11-07 06:14:37 +03:00
|
|
|
std::vector<StringPieceRef> sym_pieces;
|
2020-10-27 02:45:20 +03:00
|
|
|
bool has_common_symbol;
|
2020-10-26 08:52:55 +03:00
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
std::string_view symbol_strtab;
|
2020-12-10 09:59:24 +03:00
|
|
|
const ElfShdr *symtab_sec;
|
2020-10-04 12:00:33 +03:00
|
|
|
};
|
|
|
|
|
2020-11-24 10:22:32 +03:00
|
|
|
class SharedFile : public InputFile {
|
|
|
|
public:
|
2020-12-12 06:42:43 +03:00
|
|
|
SharedFile(MemoryMappedFile mb, bool as_needed) : InputFile(mb) {
|
2020-11-30 10:43:47 +03:00
|
|
|
is_alive = !as_needed;
|
|
|
|
}
|
2020-11-24 10:22:32 +03:00
|
|
|
|
|
|
|
void parse();
|
|
|
|
void resolve_symbols();
|
2020-12-10 14:12:43 +03:00
|
|
|
std::span<Symbol *> find_aliases(Symbol *sym);
|
2020-11-24 10:22:32 +03:00
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
std::string_view soname;
|
2020-11-27 12:10:09 +03:00
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
std::vector<std::string_view> version_strings;
|
2020-11-24 10:22:32 +03:00
|
|
|
|
|
|
|
private:
|
2020-12-10 12:23:13 +03:00
|
|
|
std::string_view get_soname(std::span<ElfShdr> elf_sections);
|
2020-12-10 09:10:18 +03:00
|
|
|
void maybe_override_symbol(Symbol &sym, const ElfSym &esym);
|
2020-12-10 07:44:58 +03:00
|
|
|
std::vector<std::string_view> read_verdef();
|
2020-11-24 10:22:32 +03:00
|
|
|
|
2020-12-10 09:10:18 +03:00
|
|
|
std::vector<const ElfSym *> elf_syms;
|
2020-11-28 16:08:46 +03:00
|
|
|
std::vector<u16> versyms;
|
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
std::string_view symbol_strtab;
|
2020-12-10 09:59:24 +03:00
|
|
|
const ElfShdr *symtab_sec;
|
2020-11-24 10:22:32 +03:00
|
|
|
};
|
|
|
|
|
2020-12-12 06:48:00 +03:00
|
|
|
std::vector<MemoryMappedFile> read_archive_members(MemoryMappedFile mb);
|
|
|
|
|
2020-11-29 04:31:04 +03:00
|
|
|
//
|
|
|
|
// linker_script.cc
|
|
|
|
//
|
|
|
|
|
2020-12-10 08:47:19 +03:00
|
|
|
void parse_linker_script(MemoryMappedFile mb);
|
2020-12-10 07:44:58 +03:00
|
|
|
void parse_version_script(std::string path);
|
2020-11-29 04:31:04 +03:00
|
|
|
|
|
|
|
//
|
|
|
|
// perf.cc
|
|
|
|
//
|
|
|
|
|
|
|
|
class Counter {
|
|
|
|
public:
|
2020-12-10 07:44:58 +03:00
|
|
|
Counter(std::string_view name, u32 value = 0) : name(name), value(value) {
|
2020-11-29 04:31:04 +03:00
|
|
|
static std::mutex mu;
|
|
|
|
std::lock_guard lock(mu);
|
|
|
|
instances.push_back(this);
|
|
|
|
}
|
|
|
|
|
|
|
|
void inc(u32 delta = 1) {
|
|
|
|
if (enabled)
|
|
|
|
value += delta;
|
|
|
|
}
|
|
|
|
|
|
|
|
void set(u32 value) {
|
|
|
|
this->value = value;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void print();
|
|
|
|
|
|
|
|
static bool enabled;
|
|
|
|
|
|
|
|
private:
|
2020-12-10 07:44:58 +03:00
|
|
|
std::string_view name;
|
2020-11-29 04:31:04 +03:00
|
|
|
std::atomic_uint32_t value;
|
|
|
|
|
|
|
|
static std::vector<Counter *> instances;
|
|
|
|
};
|
|
|
|
|
2020-12-11 10:51:20 +03:00
|
|
|
class Timer {
|
|
|
|
public:
|
|
|
|
Timer(std::string name);
|
|
|
|
void stop();
|
|
|
|
static void print();
|
|
|
|
|
|
|
|
private:
|
|
|
|
static std::vector<Timer *> instances;
|
|
|
|
|
|
|
|
std::string name;
|
|
|
|
u64 start;
|
|
|
|
u64 end;
|
|
|
|
u64 user;
|
|
|
|
u64 sys;
|
|
|
|
bool stopped = false;
|
|
|
|
};
|
|
|
|
|
|
|
|
class ScopedTimer {
|
|
|
|
public:
|
|
|
|
ScopedTimer(std::string name) {
|
|
|
|
timer = new Timer(name);
|
|
|
|
}
|
|
|
|
|
|
|
|
~ScopedTimer() {
|
|
|
|
timer->stop();
|
|
|
|
}
|
|
|
|
|
|
|
|
private:
|
|
|
|
Timer *timer;
|
|
|
|
};
|
|
|
|
|
2020-11-29 04:31:04 +03:00
|
|
|
//
|
|
|
|
// mapfile.cc
|
|
|
|
//
|
|
|
|
|
|
|
|
void print_map();
|
|
|
|
|
|
|
|
//
|
|
|
|
// main.cc
|
|
|
|
//
|
|
|
|
|
2020-12-10 08:27:38 +03:00
|
|
|
MemoryMappedFile find_library(std::string path);
|
|
|
|
MemoryMappedFile *open_input_file(std::string path);
|
|
|
|
MemoryMappedFile must_open_input_file(std::string path);
|
|
|
|
void read_file(MemoryMappedFile mb);
|
2020-11-29 04:31:04 +03:00
|
|
|
|
|
|
|
//
|
|
|
|
// Inline objects and functions
|
|
|
|
//
|
|
|
|
|
|
|
|
namespace out {
|
|
|
|
inline std::vector<ObjectFile *> objs;
|
|
|
|
inline std::vector<SharedFile *> dsos;
|
|
|
|
inline std::vector<OutputChunk *> chunks;
|
|
|
|
inline u8 *buf;
|
|
|
|
|
|
|
|
inline OutputEhdr *ehdr;
|
|
|
|
inline OutputShdr *shdr;
|
|
|
|
inline OutputPhdr *phdr;
|
|
|
|
inline InterpSection *interp;
|
|
|
|
inline GotSection *got;
|
|
|
|
inline GotPltSection *gotplt;
|
|
|
|
inline RelPltSection *relplt;
|
|
|
|
inline RelDynSection *reldyn;
|
|
|
|
inline DynamicSection *dynamic;
|
|
|
|
inline StrtabSection *strtab;
|
|
|
|
inline DynstrSection *dynstr;
|
|
|
|
inline HashSection *hash;
|
|
|
|
inline ShstrtabSection *shstrtab;
|
|
|
|
inline PltSection *plt;
|
|
|
|
inline SymtabSection *symtab;
|
|
|
|
inline DynsymSection *dynsym;
|
|
|
|
inline CopyrelSection *copyrel;
|
2020-11-29 05:57:58 +03:00
|
|
|
inline VersymSection *versym;
|
|
|
|
inline VerneedSection *verneed;
|
2020-11-29 04:31:04 +03:00
|
|
|
|
|
|
|
inline u64 tls_end;
|
|
|
|
|
|
|
|
inline Symbol *__bss_start;
|
|
|
|
inline Symbol *__ehdr_start;
|
|
|
|
inline Symbol *__rela_iplt_start;
|
|
|
|
inline Symbol *__rela_iplt_end;
|
|
|
|
inline Symbol *__init_array_start;
|
|
|
|
inline Symbol *__init_array_end;
|
|
|
|
inline Symbol *__fini_array_start;
|
|
|
|
inline Symbol *__fini_array_end;
|
|
|
|
inline Symbol *__preinit_array_start;
|
|
|
|
inline Symbol *__preinit_array_end;
|
|
|
|
inline Symbol *_DYNAMIC;
|
|
|
|
inline Symbol *_GLOBAL_OFFSET_TABLE_;
|
|
|
|
inline Symbol *_end;
|
|
|
|
inline Symbol *_etext;
|
|
|
|
inline Symbol *_edata;
|
|
|
|
}
|
|
|
|
|
2020-12-10 08:32:42 +03:00
|
|
|
inline void message(std::string msg) {
|
2020-11-29 04:31:04 +03:00
|
|
|
static std::mutex mu;
|
|
|
|
std::lock_guard lock(mu);
|
2020-12-10 16:32:47 +03:00
|
|
|
std::cout << msg << "\n";
|
2020-11-29 04:31:04 +03:00
|
|
|
}
|
|
|
|
|
2020-12-11 03:15:08 +03:00
|
|
|
inline std::string to_string(Symbol sym) {
|
|
|
|
return std::string(sym.name) + "(" + to_string(sym.file) + ")";
|
2020-11-29 04:31:04 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
inline u64 align_to(u64 val, u64 align) {
|
|
|
|
assert(__builtin_popcount(align) == 1);
|
|
|
|
return (val + align - 1) & ~(align - 1);
|
|
|
|
}
|
|
|
|
|
2020-11-15 08:07:40 +03:00
|
|
|
inline u64 Symbol::get_addr() const {
|
|
|
|
if (piece_ref.piece)
|
|
|
|
return piece_ref.piece->get_addr() + piece_ref.addend;
|
2020-12-01 15:43:30 +03:00
|
|
|
|
2020-11-25 11:20:48 +03:00
|
|
|
if (copyrel_offset != -1)
|
|
|
|
return out::copyrel->shdr.sh_addr + copyrel_offset;
|
2020-12-01 15:43:30 +03:00
|
|
|
|
2020-12-01 11:16:28 +03:00
|
|
|
if (input_section) {
|
2020-12-01 15:43:30 +03:00
|
|
|
if (!input_section->is_alive) {
|
|
|
|
// The control can reach here if there's a relocation that refers
|
|
|
|
// a local symbol belonging to a comdat group section. This is a
|
|
|
|
// violation of the spec, as all relocations should use only global
|
|
|
|
// symbols of comdat members. However, .eh_frame tends to have such
|
|
|
|
// relocations.
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2020-11-25 09:13:06 +03:00
|
|
|
return input_section->get_addr() + value;
|
2020-12-01 11:16:28 +03:00
|
|
|
}
|
2020-12-01 15:43:30 +03:00
|
|
|
|
2020-11-26 07:34:42 +03:00
|
|
|
if (file && file->is_dso && copyrel_offset == -1)
|
|
|
|
return get_plt_addr();
|
2020-12-01 15:43:30 +03:00
|
|
|
|
2020-11-15 08:07:40 +03:00
|
|
|
return value;
|
|
|
|
}
|
|
|
|
|
|
|
|
inline u64 Symbol::get_got_addr() const {
|
|
|
|
assert(got_idx != -1);
|
2020-11-17 14:47:22 +03:00
|
|
|
return out::got->shdr.sh_addr + got_idx * GOT_SIZE;
|
2020-11-15 08:07:40 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
inline u64 Symbol::get_gotplt_addr() const {
|
|
|
|
assert(gotplt_idx != -1);
|
2020-11-17 14:47:22 +03:00
|
|
|
return out::gotplt->shdr.sh_addr + gotplt_idx * GOT_SIZE;
|
2020-11-15 08:07:40 +03:00
|
|
|
}
|
|
|
|
|
2020-11-21 04:48:51 +03:00
|
|
|
inline u64 Symbol::get_gottpoff_addr() const {
|
|
|
|
assert(gottpoff_idx != -1);
|
|
|
|
return out::got->shdr.sh_addr + gottpoff_idx * GOT_SIZE;
|
2020-11-15 08:07:40 +03:00
|
|
|
}
|
|
|
|
|
2020-11-21 04:48:23 +03:00
|
|
|
inline u64 Symbol::get_tlsgd_addr() const {
|
|
|
|
assert(tlsgd_idx != -1);
|
|
|
|
return out::got->shdr.sh_addr + tlsgd_idx * GOT_SIZE;
|
2020-11-15 08:07:40 +03:00
|
|
|
}
|
|
|
|
|
2020-11-21 04:48:23 +03:00
|
|
|
inline u64 Symbol::get_tlsld_addr() const {
|
|
|
|
assert(tlsld_idx != -1);
|
|
|
|
return out::got->shdr.sh_addr + tlsld_idx * GOT_SIZE;
|
2020-11-15 08:07:40 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
inline u64 Symbol::get_plt_addr() const {
|
|
|
|
assert(plt_idx != -1);
|
2020-11-17 14:47:22 +03:00
|
|
|
return out::plt->shdr.sh_addr + plt_idx * PLT_SIZE;
|
2020-11-15 08:07:40 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
inline u64 StringPiece::get_addr() const {
|
|
|
|
MergeableSection *is = isec.load();
|
|
|
|
return is->parent.shdr.sh_addr + is->offset + output_offset;
|
|
|
|
}
|
|
|
|
|
2020-11-25 09:13:06 +03:00
|
|
|
inline u64 InputChunk::get_addr() const {
|
|
|
|
return output_section->shdr.sh_addr + offset;
|
|
|
|
}
|
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
inline u32 elf_hash(std::string_view name) {
|
2020-11-29 06:59:08 +03:00
|
|
|
u32 h = 0;
|
2020-11-29 15:05:39 +03:00
|
|
|
for (u8 c : name) {
|
2020-11-29 06:59:08 +03:00
|
|
|
h = (h << 4) + c;
|
|
|
|
u32 g = h & 0xf0000000;
|
|
|
|
if (g != 0)
|
|
|
|
h ^= g >> 24;
|
|
|
|
h &= ~g;
|
|
|
|
}
|
|
|
|
return h;
|
|
|
|
}
|
|
|
|
|
2020-12-10 07:44:58 +03:00
|
|
|
inline void write_string(u8 *buf, std::string_view str) {
|
2020-11-15 08:07:40 +03:00
|
|
|
memcpy(buf, str.data(), str.size());
|
|
|
|
buf[str.size()] = '\0';
|
|
|
|
}
|
|
|
|
|
2020-11-16 18:43:32 +03:00
|
|
|
template <typename T>
|
|
|
|
inline void write_vector(u8 *buf, const std::vector<T> &vec) {
|
|
|
|
memcpy(buf, vec.data(), vec.size() * sizeof(T));
|
|
|
|
}
|
|
|
|
|
2020-11-24 08:31:05 +03:00
|
|
|
template <typename T>
|
2020-11-17 13:56:02 +03:00
|
|
|
inline std::vector<T> flatten(std::vector<std::vector<T>> &vec) {
|
|
|
|
std::vector<T> ret;
|
|
|
|
for (std::vector<T> &v : vec)
|
|
|
|
ret.insert(ret.end(), v.begin(), v.end());
|
|
|
|
return ret;
|
|
|
|
}
|