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GNU C Library master sources branch, master, updated. glibc-2.15-128-g0eb6f47
- From: drepper at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 31 Jan 2012 03:34:45 -0000
- Subject: GNU C Library master sources branch, master, updated. glibc-2.15-128-g0eb6f47
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The branch, master has been updated
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via 27a25b6e633a3ea071e229337eaae36d0fa243fa (commit)
from c8a89e7dd5cab24242cc9050387bd5bb902da11a (commit)
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- Log -----------------------------------------------------------------
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=0eb6f47528cc10645cb0a6919b3af53166ca4fe8
commit 0eb6f47528cc10645cb0a6919b3af53166ca4fe8
Merge: 27a25b6 c8a89e7
Author: Ulrich Drepper <drepper@gmail.com>
Date: Mon Jan 30 22:34:33 2012 -0500
Merge branch 'master' of ssh://sourceware.org/git/glibc
Conflicts:
ChangeLog
diff --cc ChangeLog
index a5b5e7a,a03aee8..d078926
--- a/ChangeLog
+++ b/ChangeLog
@@@ -1,11 -1,64 +1,72 @@@
+2012-01-30 Ulrich Drepper <drepper@gmail.com>
+
+ * elf/dl-tls.c (__tls_get_addr): Optimize by transforming all calls
+ into tail calls.
+ (update_get_addr): New function.
+ (tls_get_addr_tail): Take GET_ADDR_ARGS parameter, remove
+ GET_ADDR_MODULE parameter.
+
+ 2012-01-30 Joseph Myers <joseph@codesourcery.com>
+
+ * crypt/cert.c: Remove __STDC__ conditionals.
+ * crypt/crypt-entry.c: Likewise.
+ * crypt/crypt_util.c: Likewise.
+ * libio/filedoalloc.c: Likewise.
+ * libio/fileops.c: Likewise.
+ * libio/genops.c: Likewise.
+ * libio/iofclose.c: Likewise.
+ * libio/iofdopen.c: Likewise.
+ * libio/iofopen.c: Likewise.
+ * libio/iofopen64.c: Likewise.
+ * libio/iogetdelim.c: Likewise.
+ * libio/iopopen.c: Likewise.
+ * libio/obprintf.c: Likewise.
+ * libio/oldfileops.c: Likewise.
+ * libio/oldiofclose.c: Likewise.
+ * libio/oldiofdopen.c: Likewise.
+ * libio/oldiofopen.c: Likewise.
+ * libio/oldiopopen.c: Likewise.
+ * libio/wfiledoalloc.c: Likewise.
+ * libio/wgenops.c: Likewise.
+ * locale/programs/xmalloc.c: Likewise.
+ * misc/syslog.c: Likewise.
+ * stdio-common/xbug.c: Likewise.
+ * string/memchr.c: Likewise.
+ * string/memcmp.c: Likewise.
+ * string/memrchr.c: Likewise.
+ * string/rawmemchr.c: Likewise.
+ * sysdeps/posix/getcwd.c: Likewise.
+ * time/strftime_l.c: Likewise.
+
+ 2012-01-30 Joseph Myers <joseph@codesourcery.com>
+
+ * configure.in (libc_cv_cc_sse2avx): AC_SUBST.
+ * configure: Regenerate.
+ * config.make.in (config-cflags-sse2avx): Define.
+ * sysdeps/x86_64/fpu/multiarch/Makefile (CFLAGS-slowexp-avx.c):
+ Fix typo.
+
+ 2012-01-29 Chris Metcalf <cmetcalf@tilera.com>
+
+ * scripts/config.guess: Update from upstream config git repository.
+ * scripts/config.sub: Likewise.
+
+ 2012-01-28 Chris Metcalf <cmetcalf@tilera.com>
+
+ * elf/elf.h (EM_TILEPRO, EM_TILEGX): New macros.
+ (EM_NUM): Update.
+ (R_TILEPRO_*, R_TILEGX_*): New macros.
+
+ * scripts/firstversions.awk: Fix bug in version range handling.
+
+ * sysdeps/unix/sysv/linux/grantpt.c: Use <> brackets for not-cancel.h.
+
+ * sysdeps/unix/sysv/linux/faccessat.c (faccessat): Call __fxstatat64.
+
+ * include/sys/epoll.h: New file.
+ * sysdeps/unix/sysv/linux/epoll_pwait.c (epoll_pwait): Mark as
+ libc_hidden_def.
+
2012-01-28 Ulrich Drepper <drepper@gmail.com>
* sysdeps/x86_64/fpu/bits/mathinline.h (__signbitl): Optimize a bit.
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=27a25b6e633a3ea071e229337eaae36d0fa243fa
commit 27a25b6e633a3ea071e229337eaae36d0fa243fa
Author: Ulrich Drepper <drepper@gmail.com>
Date: Mon Jan 30 22:32:05 2012 -0500
Optimize __get_tls_addr a bit
Rearrange code to avoid creation of a stack frame. At least on x86-64
the code for the fast path should be down to the bare minimum.
diff --git a/ChangeLog b/ChangeLog
index 5866bac..a5b5e7a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2012-01-30 Ulrich Drepper <drepper@gmail.com>
+
+ * elf/dl-tls.c (__tls_get_addr): Optimize by transforming all calls
+ into tail calls.
+ (update_get_addr): New function.
+ (tls_get_addr_tail): Take GET_ADDR_ARGS parameter, remove
+ GET_ADDR_MODULE parameter.
+
2012-01-28 Ulrich Drepper <drepper@gmail.com>
* sysdeps/x86_64/fpu/bits/mathinline.h (__signbitl): Optimize a bit.
diff --git a/elf/dl-tls.c b/elf/dl-tls.c
index ea94aa0..4358616 100644
--- a/elf/dl-tls.c
+++ b/elf/dl-tls.c
@@ -1,5 +1,5 @@
/* Thread-local storage handling in the ELF dynamic linker. Generic version.
- Copyright (C) 2002-2006,2008,2011 Free Software Foundation, Inc.
+ Copyright (C) 2002-2006,2008,2011,2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -509,6 +509,7 @@ rtld_hidden_def (_dl_deallocate_tls)
of the following macros. */
# ifndef GET_ADDR_ARGS
# define GET_ADDR_ARGS tls_index *ti
+# define GET_ADDR_PARAM ti
# endif
# ifndef GET_ADDR_MODULE
# define GET_ADDR_MODULE ti->ti_module
@@ -690,13 +691,13 @@ _dl_update_slotinfo (unsigned long int req_modid)
static void *
__attribute_noinline__
-tls_get_addr_tail (dtv_t *dtv, struct link_map *the_map, size_t module)
+tls_get_addr_tail (GET_ADDR_ARGS, dtv_t *dtv, struct link_map *the_map)
{
/* The allocation was deferred. Do it now. */
if (the_map == NULL)
{
/* Find the link map for this module. */
- size_t idx = module;
+ size_t idx = GET_ADDR_MODULE;
struct dtv_slotinfo_list *listp = GL(dl_tls_dtv_slotinfo_list);
while (idx >= listp->len)
@@ -728,18 +729,34 @@ tls_get_addr_tail (dtv_t *dtv, struct link_map *the_map, size_t module)
if (__builtin_expect (the_map->l_tls_offset
!= FORCED_DYNAMIC_TLS_OFFSET, 1))
{
- void *p = dtv[module].pointer.val;
+ void *p = dtv[GET_ADDR_MODULE].pointer.val;
if (__builtin_expect (p == TLS_DTV_UNALLOCATED, 0))
goto again;
- return p;
+ return (char *) p + GET_ADDR_OFFSET;
}
}
}
- void *p = dtv[module].pointer.val = allocate_and_init (the_map);
- dtv[module].pointer.is_static = false;
+ void *p = dtv[GET_ADDR_MODULE].pointer.val = allocate_and_init (the_map);
+ dtv[GET_ADDR_MODULE].pointer.is_static = false;
- return p;
+ return (char *) p + GET_ADDR_OFFSET;
+}
+
+
+static struct link_map *
+__attribute_noinline__
+update_get_addr (GET_ADDR_ARGS)
+{
+ struct link_map *the_map = _dl_update_slotinfo (GET_ADDR_MODULE);
+ dtv_t *dtv = THREAD_DTV ();
+
+ void *p = dtv[GET_ADDR_MODULE].pointer.val;
+
+ if (__builtin_expect (p == TLS_DTV_UNALLOCATED, 0))
+ return tls_get_addr_tail (GET_ADDR_PARAM, dtv, the_map);
+
+ return (char *) p + GET_ADDR_OFFSET;
}
@@ -749,19 +766,14 @@ void *
__tls_get_addr (GET_ADDR_ARGS)
{
dtv_t *dtv = THREAD_DTV ();
- struct link_map *the_map = NULL;
- void *p;
if (__builtin_expect (dtv[0].counter != GL(dl_tls_generation), 0))
- {
- the_map = _dl_update_slotinfo (GET_ADDR_MODULE);
- dtv = THREAD_DTV ();
- }
+ return update_get_addr (GET_ADDR_PARAM);
- p = dtv[GET_ADDR_MODULE].pointer.val;
+ void *p = dtv[GET_ADDR_MODULE].pointer.val;
if (__builtin_expect (p == TLS_DTV_UNALLOCATED, 0))
- p = tls_get_addr_tail (dtv, the_map, GET_ADDR_MODULE);
+ return tls_get_addr_tail (GET_ADDR_PARAM, dtv, NULL);
return (char *) p + GET_ADDR_OFFSET;
}
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 ++++++++
elf/dl-tls.c | 44 ++++++++++++++++++++++++++++----------------
2 files changed, 36 insertions(+), 16 deletions(-)
hooks/post-receive
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GNU C Library master sources