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- #ifndef _HASH_H_
- #define _HASH_H_
- #include "linuxelf.h"
- /* Header file that describes the internal data structures used by the
- * ELF dynamic linker. */
- struct link_map
- {
- /* These entries must be in this order to be compatible with the
- * interface used by gdb to obtain the list of symbols. */
- unsigned long l_addr; /* address at which object is mapped */
- char *l_name; /* full name of loaded object */
- Elf32_Dyn *l_ld; /* dynamic structure of object */
- struct link_map *l_next;
- struct link_map *l_prev;
- };
- /* The DT_DEBUG entry in the .dynamic section is given the address of
- * this structure. gdb can pick this up to obtain the correct list of
- * loaded modules. */
- struct r_debug
- {
- int r_version; /* debugging info version no */
- struct link_map *r_map; /* address of link_map */
- unsigned long r_brk; /* address of update routine */
- enum
- {
- RT_CONSISTENT,
- RT_ADD,
- RT_DELETE
- } r_state;
- unsigned long r_ldbase; /* base addr of ld.so */
- };
- #ifndef RTLD_NEXT
- #define RTLD_NEXT ((void*)-1)
- #endif
- struct dyn_elf{
- unsigned long flags;
- struct elf_resolve * dyn;
- struct dyn_elf * next_handle; /* Used by dlopen et al. */
- struct dyn_elf * next;
- };
-
- struct elf_resolve{
- /* These entries must be in this order to be compatible with the interface used
- by gdb to obtain the list of symbols. */
- char * loadaddr;
- char * libname;
- unsigned long dynamic_addr;
- struct elf_resolve * next;
- struct elf_resolve * prev;
- /* Nothing after this address is used by gdb. */
- enum {elf_lib, elf_executable,program_interpreter, loaded_file} libtype;
- struct dyn_elf * symbol_scope;
- unsigned short usage_count;
- unsigned short int init_flag;
- unsigned int nbucket;
- unsigned long * elf_buckets;
- /*
- * These are only used with ELF style shared libraries
- */
- unsigned long nchain;
- unsigned long * chains;
- unsigned long dynamic_info[24];
- unsigned long dynamic_size;
- unsigned long n_phent;
- Elf32_Phdr * ppnt;
- #if defined(__mips__)
- /* Needed for MIPS relocation */
- unsigned long mips_gotsym;
- unsigned long mips_local_gotno;
- unsigned long mips_symtabno;
- #endif
- #ifdef __powerpc__
- /* this is used to store the address of relocation data words, so
- * we don't have to calculate it every time, which requires a divide */
- unsigned long data_words;
- #endif
- };
- #if 0
- /*
- * The DT_DEBUG entry in the .dynamic section is given the address of this structure.
- * gdb can pick this up to obtain the correct list of loaded modules.
- */
- struct r_debug{
- int r_version;
- struct elf_resolve * link_map;
- unsigned long brk_fun;
- enum {RT_CONSISTENT, RT_ADD, RT_DELETE};
- unsigned long ldbase;
- };
- #endif
- #define COPY_RELOCS_DONE 1
- #define RELOCS_DONE 2
- #define JMP_RELOCS_DONE 4
- #define INIT_FUNCS_CALLED 8
- extern struct dyn_elf * _dl_symbol_tables;
- extern struct elf_resolve * _dl_loaded_modules;
- extern struct dyn_elf * _dl_handles;
- extern struct elf_resolve * _dl_check_hashed_files(char * libname);
- extern struct elf_resolve * _dl_add_elf_hash_table(char * libname,
- char * loadaddr, unsigned long * dynamic_info,
- unsigned long dynamic_addr, unsigned long dynamic_size);
- extern char * _dl_find_hash(char * name, struct dyn_elf * rpnt1,
- struct elf_resolve * f_tpnt, int copyrel);
- extern int _dl_linux_dynamic_link(void);
- extern char * _dl_library_path;
- extern char * _dl_not_lazy;
- extern unsigned long _dl_elf_hash(const char * name);
- static inline int _dl_symbol(char * name)
- {
- if(name[0] != '_' || name[1] != 'd' || name[2] != 'l' || name[3] != '_')
- return 0;
- return 1;
- }
- #define DL_ERROR_NOFILE 1
- #define DL_ERROR_NOZERO 2
- #define DL_ERROR_NOTELF 3
- #define DL_ERROR_NOTMAGIC 4
- #define DL_ERROR_NOTDYN 5
- #define DL_ERROR_MMAP_FAILED 6
- #define DL_ERROR_NODYNAMIC 7
- #define DL_WRONG_RELOCS 8
- #define DL_BAD_HANDLE 9
- #define DL_NO_SYMBOL 10
- #endif /* _HASH_H_ */
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