fdlfcn.h

#ifndef __FDLFCN_H_
#define __FDLFCN_H_ 1
 
#include <heap.h>
#include <executables/elf.h>
 
// signifies that (for example dlysm) should look through the list of loaded so files and find the address of the given symbol
#define FLD_NEXT (void*)-1
 
typedef struct fdlfcn_handle
{
    void* address;
    Elf64_Ehdr ehdr;
    Elf64_Shdr* shdrs;
    Elf64_Sym* symbols;
    Elf64_Rela* relocations;
 
    int symtab_index;
    int text_section_index;
    void* string_table_data;
    void* text_section_data;
    void* data_section_data;
    void* rodata_section_data;
    void* symtab_str_section_data;
 
    Elf64_Shdr* text_section_header;
    Elf64_Shdr* string_table_header;
    Elf64_Shdr* data_section_header;
    Elf64_Shdr* rodata_section_header;
    Elf64_Shdr* symtab_str_section_header;
 
    struct fdlfcn_handle* prev;
    struct fdlfcn_handle* next;
} fdlfcn_handle;
 
// immediately load sections into memory
#define FDL_IMMEDIATE 0
 
fdlfcn_handle* fdlopen(void* filedata, int flags);
void* fdlsym(fdlfcn_handle* handle, const char* symbol_name);
int fdlclose(fdlfcn_handle* handle);
 
// defines that make my life easier
#define dlopen fdlopen
#define dlsym fdlsym
#define dlclose fdlclose
 
#endif