/* 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 _LDSO_H #define _LDSO_H #include <features.h> /* Prepare for the case that `__builtin_expect' is not available. */ #if defined __GNUC__ && __GNUC__ == 2 && __GNUC_MINOR__ < 96 #define __builtin_expect(x, expected_value) (x) #endif #ifndef likely # define likely(x) __builtin_expect((!!(x)),1) #endif #ifndef unlikely # define unlikely(x) __builtin_expect((!!(x)),0) #endif #ifndef __LINUX_COMPILER_H #define __LINUX_COMPILER_H #endif /* Pull in compiler and arch stuff */ #include <stdlib.h> #include <stdarg.h> #include <stddef.h> /* for ptrdiff_t */ #include <stdbool.h> #define _FCNTL_H /* We need this if arch has only new syscalls defined */ #ifndef AT_FDCWD #define AT_FDCWD -100 #endif /* AT_FDCWD */ #include <bits/fcntl.h> #include <bits/wordsize.h> /* Pull in the arch specific type information */ #include <sys/types.h> /* Pull in the arch specific page size */ #include <bits/uClibc_page.h> /* Pull in the MIN macro */ #include <sys/param.h> /* Pull in the ldso syscalls and string functions */ #ifndef __ARCH_HAS_NO_SHARED__ #include <dl-syscall.h> #include <dl-string.h> /* Now the ldso specific headers */ #include <dl-elf.h> #ifdef __UCLIBC_HAS_TLS__ /* Defines USE_TLS */ #include <tls.h> #endif #include <dl-hash.h> /* common align masks, if not specified by sysdep headers */ #ifndef ADDR_ALIGN #define ADDR_ALIGN (_dl_pagesize - 1) #endif #ifndef PAGE_ALIGN #define PAGE_ALIGN (~ADDR_ALIGN) #endif #ifndef OFFS_ALIGN #define OFFS_ALIGN (PAGE_ALIGN & ~(1ul << (sizeof(_dl_pagesize) * 8 - 1))) #endif /* For INIT/FINI dependency sorting. */ struct init_fini_list { struct init_fini_list *next; struct elf_resolve *tpnt; }; /* Global variables used within the shared library loader */ extern char *_dl_library_path; /* Where we look for libraries */ extern char *_dl_preload; /* Things to be loaded before the libs */ #ifdef __LDSO_SEARCH_INTERP_PATH__ extern const char *_dl_ldsopath; /* Where the shared lib loader was found */ #endif extern const char *_dl_progname; /* The name of the executable being run */ extern size_t _dl_pagesize; /* Store the page size for use later */ #ifdef __LDSO_PRELINK_SUPPORT__ extern char *_dl_trace_prelink; /* Library for prelinking trace */ extern struct elf_resolve *_dl_trace_prelink_map; /* Library map for prelinking trace */ #else #define _dl_trace_prelink 0 #endif #ifdef __DSBT__ extern void **_dl_ldso_dsbt; #endif #if defined(USE_TLS) && USE_TLS extern void _dl_add_to_slotinfo (struct link_map *l); extern void ** __attribute__ ((const)) _dl_initial_error_catch_tsd (void); #endif #ifdef USE_TLS void _dl_add_to_slotinfo (struct link_map *l); void ** __attribute__ ((const)) _dl_initial_error_catch_tsd (void); #endif #ifdef __SUPPORT_LD_DEBUG__ extern char *_dl_debug; extern char *_dl_debug_symbols; extern char *_dl_debug_move; extern char *_dl_debug_reloc; extern char *_dl_debug_detail; extern char *_dl_debug_nofixups; extern char *_dl_debug_bindings; extern int _dl_debug_file; # define __dl_debug_dprint(fmt, args...) \ _dl_dprintf(_dl_debug_file, "%s:%i: " fmt, __func__, __LINE__, ## args); # define _dl_if_debug_dprint(fmt, args...) \ do { if (_dl_debug) __dl_debug_dprint(fmt, ## args); } while (0) #else # define __dl_debug_dprint(fmt, args...) do {} while (0) # define _dl_if_debug_dprint(fmt, args...) do {} while (0) /* disabled on purpose, _dl_debug_file should be guarded by __SUPPORT_LD_DEBUG__ # define _dl_debug_file 2*/ #endif /* __SUPPORT_LD_DEBUG__ */ #ifdef IS_IN_rtld # ifdef __SUPPORT_LD_DEBUG__ # define _dl_assert(expr) \ do { \ if (!(expr)) { \ __dl_debug_dprint("assert(%s)\n", #expr); \ _dl_exit(45); \ } \ } while (0) # else # define _dl_assert(expr) ((void)0) # endif #else # include <assert.h> # define _dl_assert(expr) assert(expr) #endif #ifdef __SUPPORT_LD_DEBUG_EARLY__ # define _dl_debug_early(fmt, args...) __dl_debug_dprint(fmt, ## args) #else # define _dl_debug_early(fmt, args...) do {} while (0) #endif /* __SUPPORT_LD_DEBUG_EARLY__ */ #ifndef NULL #define NULL ((void *) 0) #endif extern void *_dl_malloc(size_t size); extern void *_dl_calloc(size_t __nmemb, size_t __size); extern void *_dl_realloc(void *__ptr, size_t __size); extern void _dl_free(void *); extern char *_dl_getenv(const char *symbol, char **envp); extern void _dl_unsetenv(const char *symbol, char **envp); #ifdef IS_IN_rtld extern char *_dl_strdup(const char *string); extern void _dl_dprintf(int, const char *, ...); #else # include <string.h> # define _dl_strdup strdup # include <stdio.h> # ifdef __USE_GNU # define _dl_dprintf dprintf # else # define _dl_dprintf(fd, fmt, args...) fprintf(stderr, fmt, ## args) # endif #endif #ifndef DL_GET_READY_TO_RUN_EXTRA_PARMS # define DL_GET_READY_TO_RUN_EXTRA_PARMS #endif #ifndef DL_GET_READY_TO_RUN_EXTRA_ARGS # define DL_GET_READY_TO_RUN_EXTRA_ARGS #endif extern void *_dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr, ElfW(auxv_t) auxvt[AT_EGID + 1], char **envp, char **argv DL_GET_READY_TO_RUN_EXTRA_PARMS); #ifdef HAVE_DL_INLINES_H #include <dl-inlines.h> #endif #else /* __ARCH_HAS_NO_SHARED__ */ #include <dl-defs.h> #endif #endif /* _LDSO_H */