|
 |
94084c |
commit 8dbeb0561eeb876f557ac9eef5721912ec074ea5
|
|
|
94084c |
Author: Florian Weimer <fweimer@redhat.com>
|
|
|
94084c |
Date: Thu Dec 9 09:49:32 2021 +0100
|
|
|
94084c |
|
|
|
94084c |
nptl: Add <thread_pointer.h> for defining __thread_pointer
|
|
|
94084c |
|
|
|
94084c |
<tls.h> already contains a definition that is quite similar,
|
|
|
94084c |
but it is not consistent across architectures.
|
|
|
94084c |
|
|
|
94084c |
Only architectures for which rseq support is added are covered.
|
|
|
94084c |
|
|
|
94084c |
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
|
|
|
94084c |
|
|
|
94084c |
diff --git a/sysdeps/nptl/thread_pointer.h b/sysdeps/nptl/thread_pointer.h
|
|
|
94084c |
new file mode 100644
|
|
|
94084c |
index 0000000000000000..92f2f3093eba55bb
|
|
|
94084c |
--- /dev/null
|
|
|
94084c |
+++ b/sysdeps/nptl/thread_pointer.h
|
|
|
94084c |
@@ -0,0 +1,28 @@
|
|
|
94084c |
+/* __thread_pointer definition. Generic version.
|
|
|
94084c |
+ Copyright (C) 2021 Free Software Foundation, Inc.
|
|
|
94084c |
+ This file is part of the GNU C Library.
|
|
|
94084c |
+
|
|
|
94084c |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
94084c |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
94084c |
+ License as published by the Free Software Foundation; either
|
|
|
94084c |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
94084c |
+
|
|
|
94084c |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
94084c |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
94084c |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
94084c |
+ Lesser General Public License for more details.
|
|
|
94084c |
+
|
|
|
94084c |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
94084c |
+ License along with the GNU C Library. If not, see
|
|
|
94084c |
+ <https://www.gnu.org/licenses/>. */
|
|
|
94084c |
+
|
|
|
94084c |
+#ifndef _SYS_THREAD_POINTER_H
|
|
|
94084c |
+#define _SYS_THREAD_POINTER_H
|
|
|
94084c |
+
|
|
|
94084c |
+static inline void *
|
|
|
94084c |
+__thread_pointer (void)
|
|
|
94084c |
+{
|
|
|
94084c |
+ return __builtin_thread_pointer ();
|
|
|
94084c |
+}
|
|
|
94084c |
+
|
|
|
94084c |
+#endif /* _SYS_THREAD_POINTER_H */
|
|
|
94084c |
diff --git a/sysdeps/powerpc/nptl/thread_pointer.h b/sysdeps/powerpc/nptl/thread_pointer.h
|
|
|
94084c |
new file mode 100644
|
|
|
94084c |
index 0000000000000000..8fd5ba671f6f5e64
|
|
|
94084c |
--- /dev/null
|
|
|
94084c |
+++ b/sysdeps/powerpc/nptl/thread_pointer.h
|
|
|
94084c |
@@ -0,0 +1,33 @@
|
|
|
94084c |
+/* __thread_pointer definition. powerpc version.
|
|
|
94084c |
+ Copyright (C) 2021 Free Software Foundation, Inc.
|
|
|
94084c |
+ This file is part of the GNU C Library.
|
|
|
94084c |
+
|
|
|
94084c |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
94084c |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
94084c |
+ License as published by the Free Software Foundation; either
|
|
|
94084c |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
94084c |
+
|
|
|
94084c |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
94084c |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
94084c |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
94084c |
+ Lesser General Public License for more details.
|
|
|
94084c |
+
|
|
|
94084c |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
94084c |
+ License along with the GNU C Library. If not, see
|
|
|
94084c |
+ <https://www.gnu.org/licenses/>. */
|
|
|
94084c |
+
|
|
|
94084c |
+#ifndef _SYS_THREAD_POINTER_H
|
|
|
94084c |
+#define _SYS_THREAD_POINTER_H
|
|
|
94084c |
+
|
|
|
94084c |
+static inline void *
|
|
|
94084c |
+__thread_pointer (void)
|
|
|
94084c |
+{
|
|
|
94084c |
+#ifdef __powerpc64__
|
|
|
94084c |
+ register void *__result asm ("r13");
|
|
|
94084c |
+#else
|
|
|
94084c |
+ register void *__result asm ("r2");
|
|
|
94084c |
+#endif
|
|
|
94084c |
+ return __result;
|
|
|
94084c |
+}
|
|
|
94084c |
+
|
|
|
94084c |
+#endif /* _SYS_THREAD_POINTER_H */
|
|
|
94084c |
diff --git a/sysdeps/x86/nptl/thread_pointer.h b/sysdeps/x86/nptl/thread_pointer.h
|
|
|
94084c |
new file mode 100644
|
|
|
94084c |
index 0000000000000000..6b71b6f7e1401e4c
|
|
|
94084c |
--- /dev/null
|
|
|
94084c |
+++ b/sysdeps/x86/nptl/thread_pointer.h
|
|
|
94084c |
@@ -0,0 +1,38 @@
|
|
|
94084c |
+/* __thread_pointer definition. x86 version.
|
|
|
94084c |
+ Copyright (C) 2021 Free Software Foundation, Inc.
|
|
|
94084c |
+ This file is part of the GNU C Library.
|
|
|
94084c |
+
|
|
|
94084c |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
94084c |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
94084c |
+ License as published by the Free Software Foundation; either
|
|
|
94084c |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
94084c |
+
|
|
|
94084c |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
94084c |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
94084c |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
94084c |
+ Lesser General Public License for more details.
|
|
|
94084c |
+
|
|
|
94084c |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
94084c |
+ License along with the GNU C Library. If not, see
|
|
|
94084c |
+ <https://www.gnu.org/licenses/>. */
|
|
|
94084c |
+
|
|
|
94084c |
+#ifndef _SYS_THREAD_POINTER_H
|
|
|
94084c |
+#define _SYS_THREAD_POINTER_H
|
|
|
94084c |
+
|
|
|
94084c |
+static inline void *
|
|
|
94084c |
+__thread_pointer (void)
|
|
|
94084c |
+{
|
|
|
94084c |
+#if __GNUC_PREREQ (11, 1)
|
|
|
94084c |
+ return __builtin_thread_pointer ();
|
|
|
94084c |
+#else
|
|
|
94084c |
+ void *__result;
|
|
|
94084c |
+# ifdef __x86_64__
|
|
|
94084c |
+ __asm__ ("mov %%fs:0, %0" : "=r" (__result));
|
|
|
94084c |
+# else
|
|
|
94084c |
+ __asm__ ("mov %%gs:0, %0" : "=r" (__result));
|
|
|
94084c |
+# endif
|
|
|
94084c |
+ return __result;
|
|
|
94084c |
+#endif /* !GCC 11 */
|
|
|
94084c |
+}
|
|
|
94084c |
+
|
|
|
94084c |
+#endif /* _SYS_THREAD_POINTER_H */
|