diff options
Diffstat (limited to 'elf/ldsodefs.h')
| -rw-r--r-- | elf/ldsodefs.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/elf/ldsodefs.h b/elf/ldsodefs.h index 45c2a5e..6814f25 100644 --- a/elf/ldsodefs.h +++ b/elf/ldsodefs.h @@ -127,6 +127,8 @@ extern int _dl_zerofd; extern const char *_dl_profile; /* Map of shared object to be profiled. */ extern struct link_map *_dl_profile_map; +/* Filename of the output file. */ +extern const char *_dl_profile_output; /* If nonzero the appropriate debug information is printed. */ extern int _dl_debug_libs; @@ -409,6 +411,11 @@ extern void _dl_start_profile (struct link_map *map, const char *output_dir) /* The actual functions used to keep book on the calls. */ extern void _dl_mcount (ElfW(Addr) frompc, ElfW(Addr) selfpc); +/* This function is simply a wrapper around the _dl_mcount function + which does not require a FROMPC parameter since this is the + calling function. */ +extern void _dl_mcount_wrapper (ElfW(Addr) selfpc); + /* Show the members of the auxiliary array passed up from the kernel. */ extern void _dl_show_auxv (void) internal_function; @@ -424,6 +431,18 @@ extern const struct r_strlenpair *_dl_important_hwcaps (const char *platform, size_t *max_capstrlen) internal_function; + +/* When we do profiling we have the problem that uses of `dlopen'ed + objects don't use the PLT but instead use a pointer to the function. + We still want to have profiling data and in these cases we must do + the work of calling `_dl_mcount' ourself. The following macros + helps do it. */ +#define _CALL_DL_FCT(fctp, args) \ + ({ if (_dl_profile_map != NULL) \ + _dl_mcount_wrapper ((ElfW(Addr)) fctp); \ + (*fctp) args; \ + }) + __END_DECLS #endif /* ldsodefs.h */ |