/* vi: set sw=4 ts=4: */ /* * Copyright (C) 2000-2005 by Erik Andersen <andersen@codepoet.org> * * GNU Lesser General Public License version 2.1 or later. */ #ifndef _LD_HASH_H_ #define _LD_HASH_H_ #ifndef RTLD_NEXT #define RTLD_NEXT ((void*)-1) #endif struct init_fini { struct elf_resolve **init_fini; unsigned long nlist; /* Number of entries in init_fini */ }; struct dyn_elf{ struct elf_resolve * dyn; struct dyn_elf * next_handle; /* Used by dlopen et al. */ struct init_fini init_fini; struct dyn_elf * next; struct dyn_elf * prev; }; 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. */ ElfW(Addr) loadaddr; /* Base address shared object is loaded at. */ char *libname; /* Absolute file name object was found in. */ ElfW(Dyn) *dynamic_addr; /* Dynamic section of the shared object. */ 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 long rtld_flags; /* RTLD_GLOBAL, RTLD_NOW etc. */ Elf_Symndx nbucket; Elf_Symndx *elf_buckets; struct init_fini_list *init_fini; struct init_fini_list *rtld_local; /* keep tack of RTLD_LOCAL libs in same group */ /* * These are only used with ELF style shared libraries */ Elf_Symndx nchain; Elf_Symndx *chains; unsigned long dynamic_info[DYNAMIC_SIZE]; unsigned long n_phent; ElfW(Phdr) * ppnt; ElfW(Addr) relro_addr; size_t relro_size; dev_t st_dev; /* device */ ino_t st_ino; /* inode */ #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 }; #define RELOCS_DONE 0x000001 #define JMP_RELOCS_DONE 0x000002 #define INIT_FUNCS_CALLED 0x000004 #define FINI_FUNCS_CALLED 0x000008 #define DL_OPENED 0x000010 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_add_elf_hash_table(const char * libname, char * loadaddr, unsigned long * dynamic_info, unsigned long dynamic_addr, unsigned long dynamic_size); extern char * _dl_find_hash(const char * name, struct dyn_elf * rpnt1, struct elf_resolve *mytpnt, int type_class); extern int _dl_linux_dynamic_link(void); extern char * _dl_library_path; extern char * _dl_not_lazy; static inline int _dl_symbol(char * name) { if(name[0] != '_' || name[1] != 'd' || name[2] != 'l' || name[3] != '_') return 0; return 1; } #define LD_ERROR_NOFILE 1 #define LD_ERROR_NOZERO 2 #define LD_ERROR_NOTELF 3 #define LD_ERROR_NOTMAGIC 4 #define LD_ERROR_NOTDYN 5 #define LD_ERROR_MMAP_FAILED 6 #define LD_ERROR_NODYNAMIC 7 #define LD_WRONG_RELOCS 8 #define LD_BAD_HANDLE 9 #define LD_NO_SYMBOL 10 #endif /* _LD_HASH_H_ */