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authorJakub Jelinek <jakub@redhat.com>2007-07-31 13:33:18 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-31 13:33:18 +0000
commit32c075e1f01849e161724bbd400ba77244e482cc (patch)
tree5f083a3f352104f32bb6c902d57fa3f294bd8d4d /csu
parentd6220e9ee38c1c9285221b023346201ec5f511b3 (diff)
downloadglibc-32c075e1f01849e161724bbd400ba77244e482cc.zip
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Diffstat (limited to 'csu')
-rw-r--r--csu/Versions4
-rw-r--r--csu/libc-start.c17
-rw-r--r--csu/libc-tls.c58
-rw-r--r--csu/tst-atomic.c113
-rw-r--r--csu/version.c7
5 files changed, 57 insertions, 142 deletions
diff --git a/csu/Versions b/csu/Versions
index f0b4f00..a1321a9 100644
--- a/csu/Versions
+++ b/csu/Versions
@@ -5,7 +5,7 @@ libc {
# helper functions
__libc_init_first; __libc_start_main;
-%if !HAVE___THREAD
+%if !(USE_TLS && HAVE___THREAD)
# global variables
_errno;
@@ -18,7 +18,7 @@ libc {
gnu_get_libc_release; gnu_get_libc_version;
}
GLIBC_PRIVATE {
-%if HAVE___THREAD
+%if USE_TLS && HAVE___THREAD
# This version is for the TLS symbol, GLIBC_2.0 is the old object symbol.
errno;
%endif
diff --git a/csu/libc-start.c b/csu/libc-start.c
index 6348447..194db6b 100644
--- a/csu/libc-start.c
+++ b/csu/libc-start.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998-2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1998-2003, 2004, 2005 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
@@ -30,7 +30,11 @@ extern int __libc_multiple_libcs;
#include <tls.h>
#ifndef SHARED
# include <dl-osinfo.h>
-extern void __pthread_initialize_minimal (void);
+extern void __pthread_initialize_minimal (void)
+# if !(USE_TLS - 0) && !defined NONTLS_INIT_TP
+ __attribute__ ((weak))
+# endif
+ ;
# ifndef THREAD_SET_STACK_GUARD
/* Only exported for architectures that don't store the stack guard canary
in thread local area. */
@@ -136,8 +140,13 @@ LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
/* Initialize the thread library at least a bit since the libgcc
functions are using thread functions if these are available and
- we need to setup errno. */
- __pthread_initialize_minimal ();
+ we need to setup errno. If there is no thread library and we
+ handle TLS the function is defined in the libc to initialized the
+ TLS handling. */
+# if !(USE_TLS - 0) && !defined NONTLS_INIT_TP
+ if (__pthread_initialize_minimal)
+# endif
+ __pthread_initialize_minimal ();
#endif
# ifndef SHARED
diff --git a/csu/libc-tls.c b/csu/libc-tls.c
index 0d240cc..3544e39 100644
--- a/csu/libc-tls.c
+++ b/csu/libc-tls.c
@@ -1,5 +1,5 @@
/* Initialization code for TLS in statically linked application.
- Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005 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
@@ -29,6 +29,7 @@
#error makefile bug, this file is for static only
#endif
+#ifdef USE_TLS
extern ElfW(Phdr) *_dl_phdr;
extern size_t _dl_phnum;
@@ -142,19 +143,19 @@ __libc_setup_tls (size_t tcbsize, size_t tcbalign)
The initialized value of _dl_tls_static_size is provided by dl-open.c
to request some surplus that permits dynamic loading of modules with
IE-model TLS. */
-#if TLS_TCB_AT_TP
+# if TLS_TCB_AT_TP
tcb_offset = roundup (memsz + GL(dl_tls_static_size), tcbalign);
tlsblock = __sbrk (tcb_offset + tcbsize + max_align);
-#elif TLS_DTV_AT_TP
+# elif TLS_DTV_AT_TP
tcb_offset = roundup (tcbsize, align ?: 1);
tlsblock = __sbrk (tcb_offset + memsz + max_align
+ TLS_PRE_TCB_SIZE + GL(dl_tls_static_size));
tlsblock += TLS_PRE_TCB_SIZE;
-#else
+# else
/* In case a model with a different layout for the TCB and DTV
is defined add another #elif here and in the following #ifs. */
-# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
-#endif
+# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
+# endif
/* Align the TLS block. */
tlsblock = (void *) (((uintptr_t) tlsblock + max_align - 1)
@@ -165,16 +166,16 @@ __libc_setup_tls (size_t tcbsize, size_t tcbalign)
// static_dtv[1].counter = 0; would be needed if not already done
/* Initialize the TLS block. */
-#if TLS_TCB_AT_TP
+# if TLS_TCB_AT_TP
static_dtv[2].pointer.val = ((char *) tlsblock + tcb_offset
- roundup (memsz, align ?: 1));
static_map.l_tls_offset = roundup (memsz, align ?: 1);
-#elif TLS_DTV_AT_TP
+# elif TLS_DTV_AT_TP
static_dtv[2].pointer.val = (char *) tlsblock + tcb_offset;
static_map.l_tls_offset = tcb_offset;
-#else
-# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
-#endif
+# else
+# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
+# endif
static_dtv[2].pointer.is_static = true;
/* sbrk gives us zero'd memory, so we don't need to clear the remainder. */
memcpy (static_dtv[2].pointer.val, initimage, filesz);
@@ -182,16 +183,16 @@ __libc_setup_tls (size_t tcbsize, size_t tcbalign)
/* Install the pointer to the dtv. */
/* Initialize the thread pointer. */
-#if TLS_TCB_AT_TP
+# if TLS_TCB_AT_TP
INSTALL_DTV ((char *) tlsblock + tcb_offset, static_dtv);
const char *lossage = TLS_INIT_TP ((char *) tlsblock + tcb_offset, 0);
-#elif TLS_DTV_AT_TP
+# elif TLS_DTV_AT_TP
INSTALL_DTV (tlsblock, static_dtv);
const char *lossage = TLS_INIT_TP (tlsblock, 0);
-#else
-# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
-#endif
+# else
+# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
+# endif
if (__builtin_expect (lossage != NULL, 0))
__libc_fatal (lossage);
@@ -211,11 +212,11 @@ __libc_setup_tls (size_t tcbsize, size_t tcbalign)
memsz = roundup (memsz, align ?: 1);
-#if TLS_TCB_AT_TP
+# if TLS_TCB_AT_TP
memsz += tcbsize;
-#elif TLS_DTV_AT_TP
+# elif TLS_DTV_AT_TP
memsz += tcb_offset;
-#endif
+# endif
init_static_tls (memsz, MAX (TLS_TCB_ALIGN, max_align));
}
@@ -229,11 +230,11 @@ _dl_tls_setup (void)
{
init_slotinfo ();
init_static_tls (
-#if TLS_TCB_AT_TP
+# if TLS_TCB_AT_TP
TLS_TCB_SIZE,
-#else
+# else
0,
-#endif
+# endif
TLS_TCB_ALIGN);
return 0;
}
@@ -247,3 +248,16 @@ __pthread_initialize_minimal (void)
{
__libc_setup_tls (TLS_INIT_TCB_SIZE, TLS_INIT_TCB_ALIGN);
}
+
+#elif defined NONTLS_INIT_TP
+
+/* This is the minimal initialization function used when libpthread is
+ not used. */
+void
+__attribute__ ((weak))
+__pthread_initialize_minimal (void)
+{
+ NONTLS_INIT_TP;
+}
+
+#endif
diff --git a/csu/tst-atomic.c b/csu/tst-atomic.c
index 7c0b022..7a2e3d0 100644
--- a/csu/tst-atomic.c
+++ b/csu/tst-atomic.c
@@ -1,5 +1,5 @@
/* Tests for atomic.h macros.
- Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
@@ -379,117 +379,6 @@ do_test (void)
}
#endif
-#ifdef catomic_compare_and_exchange_val_acq
- mem = 24;
- if (catomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
- || mem != 35)
- {
- puts ("catomic_compare_and_exchange_val_acq test 1 failed");
- ret = 1;
- }
-
- mem = 12;
- if (catomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
- || mem != 12)
- {
- puts ("catomic_compare_and_exchange_val_acq test 2 failed");
- ret = 1;
- }
-
- mem = -15;
- if (catomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
- || mem != -56)
- {
- puts ("catomic_compare_and_exchange_val_acq test 3 failed");
- ret = 1;
- }
-
- mem = -1;
- if (catomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
- || mem != -1)
- {
- puts ("catomic_compare_and_exchange_val_acq test 4 failed");
- ret = 1;
- }
-#endif
-
- mem = 24;
- if (catomic_compare_and_exchange_bool_acq (&mem, 35, 24)
- || mem != 35)
- {
- puts ("catomic_compare_and_exchange_bool_acq test 1 failed");
- ret = 1;
- }
-
- mem = 12;
- if (! catomic_compare_and_exchange_bool_acq (&mem, 10, 15)
- || mem != 12)
- {
- puts ("catomic_compare_and_exchange_bool_acq test 2 failed");
- ret = 1;
- }
-
- mem = -15;
- if (catomic_compare_and_exchange_bool_acq (&mem, -56, -15)
- || mem != -56)
- {
- puts ("catomic_compare_and_exchange_bool_acq test 3 failed");
- ret = 1;
- }
-
- mem = -1;
- if (! catomic_compare_and_exchange_bool_acq (&mem, 17, 0)
- || mem != -1)
- {
- puts ("catomic_compare_and_exchange_bool_acq test 4 failed");
- ret = 1;
- }
-
- mem = 2;
- if (catomic_exchange_and_add (&mem, 11) != 2
- || mem != 13)
- {
- puts ("catomic_exchange_and_add test failed");
- ret = 1;
- }
-
- mem = -21;
- catomic_add (&mem, 22);
- if (mem != 1)
- {
- puts ("catomic_add test failed");
- ret = 1;
- }
-
- mem = -1;
- catomic_increment (&mem);
- if (mem != 0)
- {
- puts ("catomic_increment test failed");
- ret = 1;
- }
-
- mem = 2;
- if (catomic_increment_val (&mem) != 3)
- {
- puts ("catomic_increment_val test failed");
- ret = 1;
- }
-
- mem = 17;
- catomic_decrement (&mem);
- if (mem != 16)
- {
- puts ("catomic_decrement test failed");
- ret = 1;
- }
-
- if (catomic_decrement_val (&mem) != 15)
- {
- puts ("catomic_decrement_val test failed");
- ret = 1;
- }
-
return ret;
}
diff --git a/csu/version.c b/csu/version.c
index f7a8fb3..2196d20 100644
--- a/csu/version.c
+++ b/csu/version.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2002, 2003, 2004, 2006 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
@@ -25,7 +25,7 @@ static const char __libc_version[] = VERSION;
static const char banner[] =
"GNU C Library "RELEASE" release version "VERSION", by Roland McGrath et al.\n\
-Copyright (C) 2007 Free Software Foundation, Inc.\n\
+Copyright (C) 2006 Free Software Foundation, Inc.\n\
This is free software; see the source for copying conditions.\n\
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
PARTICULAR PURPOSE.\n\
@@ -34,6 +34,9 @@ Compiled by GNU CC version "__VERSION__".\n"
#ifdef GLIBC_OLDEST_ABI
"The oldest ABI supported: " GLIBC_OLDEST_ABI ".\n"
#endif
+#ifdef USE_TLS
+"Thread-local storage support included.\n"
+#endif
"For bug reporting instructions, please see:\n\
<http://www.gnu.org/software/libc/bugs.html>.\n";