Merge pull request #463 from PikalaxALT/pikalax_workHEADmaster

Real-match math_util.c

1 files changed, 60 insertions, 0 deletions

diff --git a/.github/calcrom/ElfFile.h b/.github/calcrom/ElfFile.h
new file mode 100644
index 00000000..85e01800
--- /dev/null
+++ b/.github/calcrom/ElfFile.h
@@ -0,0 +1,60 @@
+#ifndef CALCROM_ELFFILE_H
+#define CALCROM_ELFFILE_H
+
+#include <vector>
+#include <fstream>
+#include <filesystem>
+#include <elf.h>
+
+using namespace std;
+using namespace std::filesystem;
+
+class Elf32File {
+    ifstream handle;
+    Elf32_Ehdr ehdr;
+    vector<Elf32_Shdr> shdr;
+    vector<Elf32_Sym> symtab;
+    vector<Elf32_Phdr> phdr;
+    vector<char> shstrtab;
+    vector<char> strtab;
+
+private:
+    void ReadElfHeaderAndVerify();
+    void ReadSectionHeaders();
+    void ReadProgramHeaders();
+    void ReadShstrtab();
+    void ReadStrtab();
+    void ReadSymtab();
+public:
+    typedef unsigned int elfload;
+    static const elfload sections = 1;
+    static const elfload programs = 2;
+    static const elfload symbols  = 4;
+
+    Elf32File() = default;
+    Elf32File(path const& filename, elfload load = sections);
+    ~Elf32File();
+    void open(path const& filename, elfload load = sections);
+    void close();
+    bool is_open() const;
+    template <typename _V>
+    vector<_V> ReadSectionData(const Elf32_Shdr &_shdr) {
+        vector<_V> ret;
+        ret.resize((_shdr.sh_size + sizeof(_V) - 1) / sizeof(_V));
+        handle.seekg(_shdr.sh_offset);
+        handle.read((char *)ret.data(), _shdr.sh_size);
+        return ret;
+    }
+    template <typename _V>
+    size_t GetSectionElementCount(const Elf32_Shdr &_shdr) {
+        return (_shdr.sh_size + sizeof(_V) - 1) / sizeof(_V);
+    }
+    vector<Elf32_Shdr>& GetSectionHeaders();
+    vector<Elf32_Phdr>& GetProgramHeaders();
+    string GetSectionName(const Elf32_Shdr &section) const;
+    string GetSymbolName(const Elf32_Sym &symbol) const;
+    Elf32_Sym &operator[](const string &name);
+    Elf32_Sym &at(const string &name);
+};
+
+#endif //CALCROM_ELFFILE_H