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-rw-r--r--tools/ramscrgen/elf.cpp544
1 files changed, 272 insertions, 272 deletions
diff --git a/tools/ramscrgen/elf.cpp b/tools/ramscrgen/elf.cpp
index 7e78704..7cef9f9 100644
--- a/tools/ramscrgen/elf.cpp
+++ b/tools/ramscrgen/elf.cpp
@@ -1,272 +1,272 @@
-#include <cstdio>
-#include <cstring>
-#include <cstdint>
-#include <map>
-#include <vector>
-#include <string>
-#include "ramscrgen.h"
-#include "elf.h"
-
-#define SHN_COMMON 0xFFF2
-
-static std::string s_elfPath;
-static std::string s_archiveFilePath;
-static std::string s_archiveObjectPath;
-
-static FILE *s_file;
-
-static std::uint32_t s_sectionHeaderOffset;
-static int s_sectionHeaderEntrySize;
-static int s_sectionCount;
-static int s_shstrtabIndex;
-
-static std::uint32_t s_symtabOffset;
-static std::uint32_t s_strtabOffset;
-
-static std::uint32_t s_symbolCount;
-static std::uint32_t s_elfFileOffset;
-
-struct Symbol
-{
- std::uint32_t nameOffset;
- std::uint32_t size;
-};
-
-static void Seek(long offset)
-{
- if (std::fseek(s_file, s_elfFileOffset + offset, SEEK_SET) != 0)
- FATAL_ERROR("error: failed to seek to %ld in \"%s\"", offset, s_elfPath.c_str());
-}
-
-static void Skip(long offset)
-{
- if (std::fseek(s_file, offset, SEEK_CUR) != 0)
- FATAL_ERROR("error: failed to skip %ld bytes in \"%s\"", offset, s_elfPath.c_str());
-}
-
-static std::uint32_t ReadInt8()
-{
- int c = std::fgetc(s_file);
-
- if (c < 0)
- FATAL_ERROR("error: unexpected EOF when reading ELF file \"%s\"\n", s_elfPath.c_str());
-
- return c;
-}
-
-static std::uint32_t ReadInt16()
-{
- std::uint32_t val = 0;
- val |= ReadInt8();
- val |= ReadInt8() << 8;
- return val;
-}
-
-static std::uint32_t ReadInt32()
-{
- std::uint32_t val = 0;
- val |= ReadInt8();
- val |= ReadInt8() << 8;
- val |= ReadInt8() << 16;
- val |= ReadInt8() << 24;
- return val;
-}
-
-static std::string ReadString()
-{
- std::string s;
- char c;
-
- while ((c = ReadInt8()) != 0)
- s += c;
-
- return s;
-}
-
-static void VerifyElfIdent()
-{
- char expectedMagic[4] = { 0x7F, 'E', 'L', 'F' };
- char magic[4];
-
- if (std::fread(magic, 4, 1, s_file) != 1)
- FATAL_ERROR("error: failed to read ELF magic from \"%s\"\n", s_elfPath.c_str());
-
- if (std::memcmp(magic, expectedMagic, 4) != 0)
- FATAL_ERROR("error: ELF magic did not match in \"%s\"\n", s_elfPath.c_str());
-
- if (std::fgetc(s_file) != 1)
- FATAL_ERROR("error: \"%s\" not 32-bit ELF\n", s_elfPath.c_str());
-
- if (std::fgetc(s_file) != 1)
- FATAL_ERROR("error: \"%s\" not little-endian ELF\n", s_elfPath.c_str());
-}
-
-static void VerifyAr()
-{
- char expectedMagic[8] = {'!', '<', 'a', 'r', 'c', 'h', '>', '\n'};
- char magic[8];
-
- if (std::fread(magic, 8, 1, s_file) != 1)
- FATAL_ERROR("error: failed to read AR magic from \"%s\"\n", s_archiveFilePath.c_str());
-
- if (std::memcmp(magic, expectedMagic, 8) != 0)
- FATAL_ERROR("error: AR magic did not match in \"%s\"\n", s_archiveFilePath.c_str());
-}
-
-static void ReadElfHeader()
-{
- Seek(0x20);
- s_sectionHeaderOffset = ReadInt32();
- Seek(0x2E);
- s_sectionHeaderEntrySize = ReadInt16();
- s_sectionCount = ReadInt16();
- s_shstrtabIndex = ReadInt16();
-}
-
-static void FindArObj()
-{
- char file_ident[17] = {0};
- char filesize_s[11] = {0};
- char expectedEndMagic[2] = { 0x60, 0x0a };
- char end_magic[2];
- std::size_t filesize;
-
- Seek(8);
- while (!std::feof(s_file)) {
- if (std::fread(file_ident, 16, 1, s_file) != 1)
- FATAL_ERROR("error: failed to read file ident in \"%s\"\n", s_archiveFilePath.c_str());
- Skip(32);
- if (std::fread(filesize_s, 10, 1, s_file) != 1)
- FATAL_ERROR("error: failed to read filesize in \"%s\"\n", s_archiveFilePath.c_str());
- if (std::fread(end_magic, 2, 1, s_file) != 1)
- FATAL_ERROR("error: failed to read end sentinel in \"%s\"\n", s_archiveFilePath.c_str());
- if (std::memcmp(end_magic, expectedEndMagic, 2) != 0)
- FATAL_ERROR("error: corrupted archive header in \"%s\" at \"%s\"\n", s_archiveFilePath.c_str(), file_ident);
-
- char * ptr = std::strchr(file_ident, '/');
- if (ptr != nullptr)
- *ptr = 0;
- filesize = std::strtoul(filesize_s, nullptr, 10);
- if (std::strncmp(s_archiveObjectPath.c_str(), file_ident, 16) == 0) {
- s_elfFileOffset = std::ftell(s_file);
- return;
- }
- Skip(filesize);
- }
-
- FATAL_ERROR("error: could not find object \"%s\" in archive \"%s\"\n", s_archiveObjectPath.c_str(), s_archiveFilePath.c_str());
-}
-
-static std::string GetSectionName(std::uint32_t shstrtabOffset, int index)
-{
- Seek(s_sectionHeaderOffset + s_sectionHeaderEntrySize * index);
- std::uint32_t nameOffset = ReadInt32();
- Seek(shstrtabOffset + nameOffset);
- return ReadString();
-}
-
-static void FindTableOffsets()
-{
- s_symtabOffset = 0;
- s_strtabOffset = 0;
-
- Seek(s_sectionHeaderOffset + s_sectionHeaderEntrySize * s_shstrtabIndex + 0x10);
- std::uint32_t shstrtabOffset = ReadInt32();
-
- for (int i = 0; i < s_sectionCount; i++)
- {
- std::string name = GetSectionName(shstrtabOffset, i);
-
- if (name == ".symtab")
- {
- if (s_symtabOffset)
- FATAL_ERROR("error: mutiple .symtab sections found in \"%s\"\n", s_elfPath.c_str());
- Seek(s_sectionHeaderOffset + s_sectionHeaderEntrySize * i + 0x10);
- s_symtabOffset = ReadInt32();
- std::uint32_t size = ReadInt32();
- s_symbolCount = size / 16;
- }
- else if (name == ".strtab")
- {
- if (s_strtabOffset)
- FATAL_ERROR("error: mutiple .strtab sections found in \"%s\"\n", s_elfPath.c_str());
- Seek(s_sectionHeaderOffset + s_sectionHeaderEntrySize * i + 0x10);
- s_strtabOffset = ReadInt32();
- }
- }
-
- if (!s_symtabOffset)
- FATAL_ERROR("error: couldn't find .symtab section in \"%s\"\n", s_elfPath.c_str());
-
- if (!s_strtabOffset)
- FATAL_ERROR("error: couldn't find .strtab section in \"%s\"\n", s_elfPath.c_str());
-}
-
-static std::map<std::string, std::uint32_t> GetCommonSymbols_Shared()
-{
- VerifyElfIdent();
- ReadElfHeader();
- FindTableOffsets();
-
- std::map<std::string, std::uint32_t> commonSymbols;
-
- std::vector<Symbol> commonSymbolVec;
-
- Seek(s_symtabOffset);
-
- for (std::uint32_t i = 0; i < s_symbolCount; i++)
- {
- Symbol sym;
- sym.nameOffset = ReadInt32();
- Skip(4);
- sym.size = ReadInt32();
- Skip(2);
- std::uint16_t sectionIndex = ReadInt16();
- if (sectionIndex == SHN_COMMON)
- commonSymbolVec.push_back(sym);
- }
-
- for (const Symbol& sym : commonSymbolVec)
- {
- Seek(s_strtabOffset + sym.nameOffset);
- std::string name = ReadString();
- commonSymbols[name] = sym.size;
- }
-
- return commonSymbols;
-}
-
-std::map<std::string, std::uint32_t> GetCommonSymbolsFromLib(std::string sourcePath, std::string libpath)
-{
- std::size_t colonPos = libpath.find(':');
- if (colonPos == std::string::npos)
- FATAL_ERROR("error: missing colon separator in libfile \"%s\"\n", s_elfPath.c_str());
-
- s_archiveObjectPath = libpath.substr(colonPos + 1);
- s_archiveFilePath = sourcePath + "/" + libpath.substr(1, colonPos - 1);
- s_elfPath = sourcePath + "/" + libpath.substr(1);
-
- s_file = std::fopen(s_archiveFilePath.c_str(), "rb");
-
- if (s_file == NULL)
- FATAL_ERROR("error: failed to open \"%s\" for reading\n", s_archiveFilePath.c_str());
-
- VerifyAr();
- FindArObj();
- return GetCommonSymbols_Shared();
-}
-
-std::map<std::string, std::uint32_t> GetCommonSymbols(std::string sourcePath, std::string path)
-{
- s_elfFileOffset = 0;
- if (path[0] == '*')
- return GetCommonSymbolsFromLib(sourcePath, path);
-
- s_elfPath = sourcePath + "/" + path;
- s_file = std::fopen(s_elfPath.c_str(), "rb");
-
- if (s_file == NULL)
- FATAL_ERROR("error: failed to open \"%s\" for reading\n", path.c_str());
-
- return GetCommonSymbols_Shared();
-}
+#include <cstdio>
+#include <cstring>
+#include <cstdint>
+#include <map>
+#include <vector>
+#include <string>
+#include "ramscrgen.h"
+#include "elf.h"
+
+#define SHN_COMMON 0xFFF2
+
+static std::string s_elfPath;
+static std::string s_archiveFilePath;
+static std::string s_archiveObjectPath;
+
+static FILE *s_file;
+
+static std::uint32_t s_sectionHeaderOffset;
+static int s_sectionHeaderEntrySize;
+static int s_sectionCount;
+static int s_shstrtabIndex;
+
+static std::uint32_t s_symtabOffset;
+static std::uint32_t s_strtabOffset;
+
+static std::uint32_t s_symbolCount;
+static std::uint32_t s_elfFileOffset;
+
+struct Symbol
+{
+ std::uint32_t nameOffset;
+ std::uint32_t size;
+};
+
+static void Seek(long offset)
+{
+ if (std::fseek(s_file, s_elfFileOffset + offset, SEEK_SET) != 0)
+ FATAL_ERROR("error: failed to seek to %ld in \"%s\"", offset, s_elfPath.c_str());
+}
+
+static void Skip(long offset)
+{
+ if (std::fseek(s_file, offset, SEEK_CUR) != 0)
+ FATAL_ERROR("error: failed to skip %ld bytes in \"%s\"", offset, s_elfPath.c_str());
+}
+
+static std::uint32_t ReadInt8()
+{
+ int c = std::fgetc(s_file);
+
+ if (c < 0)
+ FATAL_ERROR("error: unexpected EOF when reading ELF file \"%s\"\n", s_elfPath.c_str());
+
+ return c;
+}
+
+static std::uint32_t ReadInt16()
+{
+ std::uint32_t val = 0;
+ val |= ReadInt8();
+ val |= ReadInt8() << 8;
+ return val;
+}
+
+static std::uint32_t ReadInt32()
+{
+ std::uint32_t val = 0;
+ val |= ReadInt8();
+ val |= ReadInt8() << 8;
+ val |= ReadInt8() << 16;
+ val |= ReadInt8() << 24;
+ return val;
+}
+
+static std::string ReadString()
+{
+ std::string s;
+ char c;
+
+ while ((c = ReadInt8()) != 0)
+ s += c;
+
+ return s;
+}
+
+static void VerifyElfIdent()
+{
+ char expectedMagic[4] = { 0x7F, 'E', 'L', 'F' };
+ char magic[4];
+
+ if (std::fread(magic, 4, 1, s_file) != 1)
+ FATAL_ERROR("error: failed to read ELF magic from \"%s\"\n", s_elfPath.c_str());
+
+ if (std::memcmp(magic, expectedMagic, 4) != 0)
+ FATAL_ERROR("error: ELF magic did not match in \"%s\"\n", s_elfPath.c_str());
+
+ if (std::fgetc(s_file) != 1)
+ FATAL_ERROR("error: \"%s\" not 32-bit ELF\n", s_elfPath.c_str());
+
+ if (std::fgetc(s_file) != 1)
+ FATAL_ERROR("error: \"%s\" not little-endian ELF\n", s_elfPath.c_str());
+}
+
+static void VerifyAr()
+{
+ char expectedMagic[8] = {'!', '<', 'a', 'r', 'c', 'h', '>', '\n'};
+ char magic[8];
+
+ if (std::fread(magic, 8, 1, s_file) != 1)
+ FATAL_ERROR("error: failed to read AR magic from \"%s\"\n", s_archiveFilePath.c_str());
+
+ if (std::memcmp(magic, expectedMagic, 8) != 0)
+ FATAL_ERROR("error: AR magic did not match in \"%s\"\n", s_archiveFilePath.c_str());
+}
+
+static void ReadElfHeader()
+{
+ Seek(0x20);
+ s_sectionHeaderOffset = ReadInt32();
+ Seek(0x2E);
+ s_sectionHeaderEntrySize = ReadInt16();
+ s_sectionCount = ReadInt16();
+ s_shstrtabIndex = ReadInt16();
+}
+
+static void FindArObj()
+{
+ char file_ident[17] = {0};
+ char filesize_s[11] = {0};
+ char expectedEndMagic[2] = { 0x60, 0x0a };
+ char end_magic[2];
+ std::size_t filesize;
+
+ Seek(8);
+ while (!std::feof(s_file)) {
+ if (std::fread(file_ident, 16, 1, s_file) != 1)
+ FATAL_ERROR("error: failed to read file ident in \"%s\"\n", s_archiveFilePath.c_str());
+ Skip(32);
+ if (std::fread(filesize_s, 10, 1, s_file) != 1)
+ FATAL_ERROR("error: failed to read filesize in \"%s\"\n", s_archiveFilePath.c_str());
+ if (std::fread(end_magic, 2, 1, s_file) != 1)
+ FATAL_ERROR("error: failed to read end sentinel in \"%s\"\n", s_archiveFilePath.c_str());
+ if (std::memcmp(end_magic, expectedEndMagic, 2) != 0)
+ FATAL_ERROR("error: corrupted archive header in \"%s\" at \"%s\"\n", s_archiveFilePath.c_str(), file_ident);
+
+ char * ptr = std::strchr(file_ident, '/');
+ if (ptr != nullptr)
+ *ptr = 0;
+ filesize = std::strtoul(filesize_s, nullptr, 10);
+ if (std::strncmp(s_archiveObjectPath.c_str(), file_ident, 16) == 0) {
+ s_elfFileOffset = std::ftell(s_file);
+ return;
+ }
+ Skip(filesize);
+ }
+
+ FATAL_ERROR("error: could not find object \"%s\" in archive \"%s\"\n", s_archiveObjectPath.c_str(), s_archiveFilePath.c_str());
+}
+
+static std::string GetSectionName(std::uint32_t shstrtabOffset, int index)
+{
+ Seek(s_sectionHeaderOffset + s_sectionHeaderEntrySize * index);
+ std::uint32_t nameOffset = ReadInt32();
+ Seek(shstrtabOffset + nameOffset);
+ return ReadString();
+}
+
+static void FindTableOffsets()
+{
+ s_symtabOffset = 0;
+ s_strtabOffset = 0;
+
+ Seek(s_sectionHeaderOffset + s_sectionHeaderEntrySize * s_shstrtabIndex + 0x10);
+ std::uint32_t shstrtabOffset = ReadInt32();
+
+ for (int i = 0; i < s_sectionCount; i++)
+ {
+ std::string name = GetSectionName(shstrtabOffset, i);
+
+ if (name == ".symtab")
+ {
+ if (s_symtabOffset)
+ FATAL_ERROR("error: mutiple .symtab sections found in \"%s\"\n", s_elfPath.c_str());
+ Seek(s_sectionHeaderOffset + s_sectionHeaderEntrySize * i + 0x10);
+ s_symtabOffset = ReadInt32();
+ std::uint32_t size = ReadInt32();
+ s_symbolCount = size / 16;
+ }
+ else if (name == ".strtab")
+ {
+ if (s_strtabOffset)
+ FATAL_ERROR("error: mutiple .strtab sections found in \"%s\"\n", s_elfPath.c_str());
+ Seek(s_sectionHeaderOffset + s_sectionHeaderEntrySize * i + 0x10);
+ s_strtabOffset = ReadInt32();
+ }
+ }
+
+ if (!s_symtabOffset)
+ FATAL_ERROR("error: couldn't find .symtab section in \"%s\"\n", s_elfPath.c_str());
+
+ if (!s_strtabOffset)
+ FATAL_ERROR("error: couldn't find .strtab section in \"%s\"\n", s_elfPath.c_str());
+}
+
+static std::map<std::string, std::uint32_t> GetCommonSymbols_Shared()
+{
+ VerifyElfIdent();
+ ReadElfHeader();
+ FindTableOffsets();
+
+ std::map<std::string, std::uint32_t> commonSymbols;
+
+ std::vector<Symbol> commonSymbolVec;
+
+ Seek(s_symtabOffset);
+
+ for (std::uint32_t i = 0; i < s_symbolCount; i++)
+ {
+ Symbol sym;
+ sym.nameOffset = ReadInt32();
+ Skip(4);
+ sym.size = ReadInt32();
+ Skip(2);
+ std::uint16_t sectionIndex = ReadInt16();
+ if (sectionIndex == SHN_COMMON)
+ commonSymbolVec.push_back(sym);
+ }
+
+ for (const Symbol& sym : commonSymbolVec)
+ {
+ Seek(s_strtabOffset + sym.nameOffset);
+ std::string name = ReadString();
+ commonSymbols[name] = sym.size;
+ }
+
+ return commonSymbols;
+}
+
+std::map<std::string, std::uint32_t> GetCommonSymbolsFromLib(std::string sourcePath, std::string libpath)
+{
+ std::size_t colonPos = libpath.find(':');
+ if (colonPos == std::string::npos)
+ FATAL_ERROR("error: missing colon separator in libfile \"%s\"\n", s_elfPath.c_str());
+
+ s_archiveObjectPath = libpath.substr(colonPos + 1);
+ s_archiveFilePath = sourcePath + "/" + libpath.substr(1, colonPos - 1);
+ s_elfPath = sourcePath + "/" + libpath.substr(1);
+
+ s_file = std::fopen(s_archiveFilePath.c_str(), "rb");
+
+ if (s_file == NULL)
+ FATAL_ERROR("error: failed to open \"%s\" for reading\n", s_archiveFilePath.c_str());
+
+ VerifyAr();
+ FindArObj();
+ return GetCommonSymbols_Shared();
+}
+
+std::map<std::string, std::uint32_t> GetCommonSymbols(std::string sourcePath, std::string path)
+{
+ s_elfFileOffset = 0;
+ if (path[0] == '*')
+ return GetCommonSymbolsFromLib(sourcePath, path);
+
+ s_elfPath = sourcePath + "/" + path;
+ s_file = std::fopen(s_elfPath.c_str(), "rb");
+
+ if (s_file == NULL)
+ FATAL_ERROR("error: failed to open \"%s\" for reading\n", path.c_str());
+
+ return GetCommonSymbols_Shared();
+}