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authorAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
committerAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
commitc68d0fa2d88fc2134a38d99e7e944828384a7671 (patch)
tree6596943bd1c77f18d6e49d4153ddd3f3d67b49f5 /libpthread/nptl/sysdeps/i386/dl-tls.h
parent9a03e98a3b418f33c347a6023e9320f3a42cb9e4 (diff)
libpthread/nptl: core of the "Native Posix Threading Library" for uClibc
targetting arm,sh,i386,mips,sparc for now Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libpthread/nptl/sysdeps/i386/dl-tls.h')
-rw-r--r--libpthread/nptl/sysdeps/i386/dl-tls.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/i386/dl-tls.h b/libpthread/nptl/sysdeps/i386/dl-tls.h
new file mode 100644
index 000000000..a1707197c
--- /dev/null
+++ b/libpthread/nptl/sysdeps/i386/dl-tls.h
@@ -0,0 +1,60 @@
+/* Thread-local storage handling in the ELF dynamic linker. i386 version.
+ Copyright (C) 2002, 2004 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+
+/* Type used for the representation of TLS information in the GOT. */
+typedef struct
+{
+ unsigned long int ti_module;
+ unsigned long int ti_offset;
+} tls_index;
+
+
+#ifdef SHARED
+/* This is the prototype for the GNU version. */
+extern void *___tls_get_addr (tls_index *ti)
+ __attribute__ ((__regparm__ (1)));
+extern void *___tls_get_addr_internal (tls_index *ti)
+ __attribute__ ((__regparm__ (1))) attribute_hidden;
+
+# ifdef IS_IN_rtld
+/* The special thing about the x86 TLS ABI is that we have two
+ variants of the __tls_get_addr function with different calling
+ conventions. The GNU version, which we are mostly concerned here,
+ takes the parameter in a register. The name is changed by adding
+ an additional underscore at the beginning. The Sun version uses
+ the normal calling convention. */
+void *
+__tls_get_addr (tls_index *ti)
+{
+ return ___tls_get_addr_internal (ti);
+}
+
+
+/* Prepare using the definition of __tls_get_addr in the generic
+ version of this file. */
+# define __tls_get_addr __attribute__ ((__regparm__ (1))) ___tls_get_addr
+strong_alias (___tls_get_addr, ___tls_get_addr_internal)
+#else
+
+/* Users should get the better interface. */
+# define __tls_get_addr ___tls_get_addr
+
+# endif
+#endif