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Update.
2001-08-31 Richard Henderson <rth@redhat.com> * elf/dl-support.c (_dl_cpuclock_offset): Protect with NONAVAIL. (HP_TIMING_AVAIL): Set to HP_SMALL_TIMING_AVAIL if present. * elf/rtld.c (HP_TIMING_AVAIL): Likewise. (print_statistics): Make scalar unsigned long long. * sysdeps/alpha/hp-timing.h: New file. 2001-08-31 Jakub Jelinek <jakub@redhat.com> * stdio-common/perror.c (perror): Save errno early, pass it down to perror_internal. (perror_internal): Add errnum argument. 2001-08-31 Jakub Jelinek <jakub@redhat.com> * sysdeps/alpha/dl-machine.h (elf_machine_rela): Remove unused code. Don't add old memory content for R_ALPHA_REFQUAD.
This commit is contained in:
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ChangeLog
19
ChangeLog
@ -1,3 +1,22 @@
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2001-08-31 Richard Henderson <rth@redhat.com>
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* elf/dl-support.c (_dl_cpuclock_offset): Protect with NONAVAIL.
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(HP_TIMING_AVAIL): Set to HP_SMALL_TIMING_AVAIL if present.
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* elf/rtld.c (HP_TIMING_AVAIL): Likewise.
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(print_statistics): Make scalar unsigned long long.
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* sysdeps/alpha/hp-timing.h: New file.
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2001-08-31 Jakub Jelinek <jakub@redhat.com>
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* stdio-common/perror.c (perror): Save errno early, pass it
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down to perror_internal.
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(perror_internal): Add errnum argument.
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2001-08-31 Jakub Jelinek <jakub@redhat.com>
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* sysdeps/alpha/dl-machine.h (elf_machine_rela): Remove unused code.
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Don't add old memory content for R_ALPHA_REFQUAD.
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2001-08-30 Ulrich Drepper <drepper@redhat.com>
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2001-08-30 Ulrich Drepper <drepper@redhat.com>
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* crypt/md5-crypt.c (__md5_crypt_r): Compute used and required
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* crypt/md5-crypt.c (__md5_crypt_r): Compute used and required
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@ -93,8 +93,14 @@ struct r_scope_elem *_dl_main_searchlist = &_dl_initial_searchlist;
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/* Nonzero during startup. */
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/* Nonzero during startup. */
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int _dl_starting_up = 1;
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int _dl_starting_up = 1;
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/* We expect less than a second for relocation. */
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#ifdef HP_SMALL_TIMING_AVAIL
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# undef HP_TIMING_AVAIL
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# define HP_TIMING_AVAIL HP_SMALL_TIMING_AVAIL
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#endif
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/* Initial value of the CPU clock. */
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/* Initial value of the CPU clock. */
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#if HP_TIMING_AVAIL
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#ifndef HP_TIMING_NONAVAIL
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hp_timing_t _dl_cpuclock_offset;
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hp_timing_t _dl_cpuclock_offset;
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#endif
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#endif
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@ -133,9 +139,8 @@ static void non_dynamic_init (void) __attribute__ ((unused));
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static void
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static void
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non_dynamic_init (void)
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non_dynamic_init (void)
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{
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{
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#if HP_TIMING_AVAIL
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if (HP_TIMING_AVAIL)
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HP_TIMING_NOW (_dl_cpuclock_offset);
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HP_TIMING_NOW (_dl_cpuclock_offset);
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#endif
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if (!_dl_pagesize)
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if (!_dl_pagesize)
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_dl_pagesize = __getpagesize ();
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_dl_pagesize = __getpagesize ();
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16
elf/rtld.c
16
elf/rtld.c
@ -121,14 +121,20 @@ struct link_map _dl_rtld_map;
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struct libname_list _dl_rtld_libname;
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struct libname_list _dl_rtld_libname;
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struct libname_list _dl_rtld_libname2;
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struct libname_list _dl_rtld_libname2;
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/* We expect less than a second for relocation. */
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#ifdef HP_SMALL_TIMING_AVAIL
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# undef HP_TIMING_AVAIL
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# define HP_TIMING_AVAIL HP_SMALL_TIMING_AVAIL
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#endif
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/* Variable for statistics. */
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/* Variable for statistics. */
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#ifndef HP_TIMING_NONAVAIL
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#ifndef HP_TIMING_NONAVAIL
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static hp_timing_t rtld_total_time;
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static hp_timing_t rtld_total_time;
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static hp_timing_t relocate_time;
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static hp_timing_t relocate_time;
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static hp_timing_t load_time;
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static hp_timing_t load_time;
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#endif
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#endif
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extern unsigned long int _dl_num_relocations; /* in dl-lookup.c */
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extern unsigned long int _dl_num_relocations; /* in dl-lookup.c */
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extern unsigned long int _dl_num_cache_relocations; /* in dl-lookup.c */
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extern unsigned long int _dl_num_cache_relocations; /* in dl-reloc.c */
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static ElfW(Addr) _dl_start_final (void *arg, struct link_map *bootstrap_map_p,
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static ElfW(Addr) _dl_start_final (void *arg, struct link_map *bootstrap_map_p,
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hp_timing_t start_time);
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hp_timing_t start_time);
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@ -136,7 +142,7 @@ static ElfW(Addr) _dl_start_final (void *arg, struct link_map *bootstrap_map_p,
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#ifdef RTLD_START
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#ifdef RTLD_START
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RTLD_START
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RTLD_START
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#else
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#else
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#error "sysdeps/MACHINE/dl-machine.h fails to define RTLD_START"
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# error "sysdeps/MACHINE/dl-machine.h fails to define RTLD_START"
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#endif
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#endif
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static ElfW(Addr)
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static ElfW(Addr)
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@ -1506,7 +1512,7 @@ print_statistics (void)
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{
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{
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char pbuf[30];
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char pbuf[30];
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HP_TIMING_PRINT (buf, sizeof (buf), relocate_time);
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HP_TIMING_PRINT (buf, sizeof (buf), relocate_time);
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cp = _itoa_word ((1000 * relocate_time) / rtld_total_time,
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cp = _itoa_word ((1000ULL * relocate_time) / rtld_total_time,
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pbuf + sizeof (pbuf), 10, 0);
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pbuf + sizeof (pbuf), 10, 0);
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wp = pbuf;
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wp = pbuf;
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switch (pbuf + sizeof (pbuf) - cp)
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switch (pbuf + sizeof (pbuf) - cp)
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@ -1535,7 +1541,7 @@ print_statistics (void)
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{
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{
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char pbuf[30];
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char pbuf[30];
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HP_TIMING_PRINT (buf, sizeof (buf), load_time);
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HP_TIMING_PRINT (buf, sizeof (buf), load_time);
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cp = _itoa_word ((1000 * load_time) / rtld_total_time,
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cp = _itoa_word ((1000ULL * load_time) / rtld_total_time,
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pbuf + sizeof (pbuf), 10, 0);
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pbuf + sizeof (pbuf), 10, 0);
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wp = pbuf;
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wp = pbuf;
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switch (pbuf + sizeof (pbuf) - cp)
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switch (pbuf + sizeof (pbuf) - cp)
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@ -26,10 +26,9 @@
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#endif
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#endif
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static void
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static void
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perror_internal (FILE *fp, const char *s)
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perror_internal (FILE *fp, const char *s, int errnum)
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{
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{
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char buf[1024];
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char buf[1024];
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int errnum = errno;
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const char *colon;
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const char *colon;
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const char *errstring;
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const char *errstring;
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@ -55,6 +54,7 @@ perror_internal (FILE *fp, const char *s)
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void
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void
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perror (const char *s)
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perror (const char *s)
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{
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{
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int errnum = errno;
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#ifdef USE_IN_LIBIO
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#ifdef USE_IN_LIBIO
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FILE *fp;
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FILE *fp;
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int fd = -1;
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int fd = -1;
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@ -73,20 +73,20 @@ perror (const char *s)
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__close (fd);
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__close (fd);
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/* Use standard error as is. */
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/* Use standard error as is. */
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perror_internal (stderr, s);
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perror_internal (stderr, s, errnum);
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}
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}
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else
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else
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{
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{
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/* We don't have to do any special hacks regarding the file
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/* We don't have to do any special hacks regarding the file
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position. Since the stderr stream wasn't used so far we just
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position. Since the stderr stream wasn't used so far we just
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write to the descriptor. */
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write to the descriptor. */
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perror_internal (fp, s);
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perror_internal (fp, s, errnum);
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/* Close the stream. */
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/* Close the stream. */
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fclose (fp);
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fclose (fp);
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((_IO_FILE *) stderr)->_offset = _IO_pos_BAD;
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((_IO_FILE *) stderr)->_offset = _IO_pos_BAD;
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}
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}
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#else
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#else
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perror_internal (stderr, s);
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perror_internal (stderr, s, errnum);
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#endif
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#endif
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}
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}
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@ -522,24 +522,7 @@ elf_machine_rela (struct link_map *map,
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else if (r_type == R_ALPHA_REFQUAD)
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else if (r_type == R_ALPHA_REFQUAD)
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{
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{
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void *reloc_addr_1 = reloc_addr;
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void *reloc_addr_1 = reloc_addr;
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Elf64_Addr reloc_addr_val;
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/* Load value without causing unaligned trap. */
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memcpy (&reloc_addr_val, reloc_addr_1, 8);
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sym_value += reloc_addr_val;
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if (map == &_dl_rtld_map)
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{
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/* Undo the relocation done here during bootstrapping.
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Now we will relocate anew, possibly using a binding
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found in the user program or a loaded library rather
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than the dynamic linker's built-in definitions used
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while loading those libraries. */
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const Elf64_Sym *const dlsymtab
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= (void *) D_PTR (map, l_info[DT_SYMTAB]);
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sym_value -= map->l_addr;
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sym_value -= dlsymtab[ELF64_R_SYM(reloc->r_info)].st_value;
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sym_value -= reloc->r_addend;
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}
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/* Store value without causing unaligned trap. */
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/* Store value without causing unaligned trap. */
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memcpy (reloc_addr_1, &sym_value, 8);
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memcpy (reloc_addr_1, &sym_value, 8);
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}
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}
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118
sysdeps/alpha/hp-timing.h
Normal file
118
sysdeps/alpha/hp-timing.h
Normal file
@ -0,0 +1,118 @@
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/* High precision, low overhead timing functions. Alpha version.
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Copyright (C) 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson <rth@redhat.com>, 2001.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _HP_TIMING_H
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#define _HP_TIMING_H 1
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#include <string.h>
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#include <sys/param.h>
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#include <stdio-common/_itoa.h>
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/* The macros defined here use the timestamp counter in IA-64. They
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provide a very accurate way to measure the time with very little
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overhead. The time values themself have no real meaning, only
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differences are interesting.
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The list of macros we need includes the following:
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- HP_TIMING_AVAIL: test for availability.
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- HP_TIMING_INLINE: this macro is non-zero if the functionality is not
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implemented using function calls but instead uses some inlined code
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which might simply consist of a few assembler instructions. We have to
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know this since we might want to use the macros here in places where we
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cannot make function calls.
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- hp_timing_t: This is the type for variables used to store the time
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values.
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- HP_TIMING_ZERO: clear `hp_timing_t' object.
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- HP_TIMING_NOW: place timestamp for current time in variable given as
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parameter.
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- HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the
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HP_TIMING_DIFF macro.
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- HP_TIMING_DIFF: compute difference between two times and store it
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in a third. Source and destination might overlap.
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- HP_TIMING_ACCUM: add time difference to another variable. This might
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be a bit more complicated to implement for some platforms as the
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operation should be thread-safe and 64bit arithmetic on 32bit platforms
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is not.
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- HP_TIMING_ACCUM_NT: this is the variant for situations where we know
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there are no threads involved.
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- HP_TIMING_PRINT: write decimal representation of the timing value into
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the given string. This operation need not be inline even though
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HP_TIMING_INLINE is specified.
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*/
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/* We always have the timestamp register, but it's got only a 4 second
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range. Use it for ld.so profiling only. */
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#define HP_TIMING_AVAIL (0)
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#define HP_SMALL_TIMING_AVAIL (1)
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/* We indeed have inlined functions. */
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#define HP_TIMING_INLINE (1)
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/* We use 32 bit values for the times. */
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typedef unsigned int hp_timing_t;
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/* Set timestamp value to zero. */
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#define HP_TIMING_ZERO(VAR) (VAR) = (0)
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/* The "rpcc" instruction returns a 32-bit counting half and a 32-bit
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"virtual cycle counter displacement". Subtracting the two gives us
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a virtual cycle count. */
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#define HP_TIMING_NOW(VAR) \
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do { \
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unsigned long int x_; \
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asm volatile ("rpcc %0" : "=r"(x_)); \
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(VAR) = (int) (x_) - (int) (x_ >> 32); \
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} while (0)
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/* ??? Two rpcc instructions can be scheduled simultaneously. */
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#define HP_TIMING_DIFF_INIT() do { } while (0)
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/* It's simple arithmetic for us. */
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#define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start))
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/* ??? Don't bother, since we're only used for ld.so. */
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#define HP_TIMING_ACCUM(Sum, Diff) not implemented
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/* No threads, no extra work. */
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#define HP_TIMING_ACCUM_NT(Sum, Diff) (Sum) += (Diff)
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/* Print the time value. */
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#define HP_TIMING_PRINT(Buf, Len, Val) \
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do { \
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char __buf[20]; \
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char *__cp = _itoa_word (Val, __buf + sizeof (__buf), 10, 0); \
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int __len = (Len); \
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char *__dest = (Buf); \
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while (__len-- > 0 && __cp < __buf + sizeof (__buf)) \
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*__dest++ = *__cp++; \
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memcpy (__dest, " clock cycles", MIN (__len, sizeof (" clock cycles"))); \
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} while (0)
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#endif /* hp-timing.h */
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