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authorWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
committerWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
commite1e46622ac0fce73d802fa4a8a2e83cc25cd9e7a (patch)
tree2c8d14e4dcc733f4227f0984ed05da5826b13acd /libpthread/linuxthreads/sysdeps/pthread/pt-initfini.c
parent6b6ede3d15f04fe825cfa9f697507457e3640344 (diff)
Revert "resolve merge"
This reverts commit 6b6ede3d15f04fe825cfa9f697507457e3640344.
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/pthread/pt-initfini.c')
-rw-r--r--libpthread/linuxthreads/sysdeps/pthread/pt-initfini.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/pthread/pt-initfini.c b/libpthread/linuxthreads/sysdeps/pthread/pt-initfini.c
new file mode 100644
index 000000000..86d4c84e9
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/pthread/pt-initfini.c
@@ -0,0 +1,123 @@
+/* Special .init and .fini section support. Linuxthread version.
+ Copyright (C) 1995, 1996, 1997, 2000, 2001 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ 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; see the file COPYING.LIB. If not,
+ see <http://www.gnu.org/licenses/>. */
+
+/* This file is compiled into assembly code which is then munged by a sed
+ script into two files: crti.s and crtn.s.
+
+ * crti.s puts a function prologue at the beginning of the
+ .init and .fini sections and defines global symbols for
+ those addresses, so they can be called as functions.
+
+ * crtn.s puts the corresponding function epilogues
+ in the .init and .fini sections. */
+
+#include <stdlib.h>
+
+/* We use embedded asm for .section unconditionally, as this makes it
+ easier to insert the necessary directives into crtn.S. */
+#define SECTION(x) __asm__ (".section " x )
+
+/* Embed an #include to pull in the alignment and .end directives. */
+__asm__ ("\n#include \"defs.h\"");
+
+/* The initial common code ends here. */
+__asm__ ("\n/*@HEADER_ENDS*/");
+
+/* To determine whether we need .end and .align: */
+__asm__ ("\n/*@TESTS_BEGIN*/");
+extern void dummy (void (*foo) (void));
+void
+dummy (void (*foo) (void))
+{
+ if (foo)
+ (*foo) ();
+}
+__asm__ ("\n/*@TESTS_END*/");
+
+/* The beginning of _init: */
+__asm__ ("\n/*@_init_PROLOG_BEGINS*/");
+
+static void
+call_initialize_minimal (void)
+{
+ extern void __pthread_initialize_minimal (void);
+
+ __pthread_initialize_minimal ();
+}
+
+SECTION (".init");
+extern void _init (void);
+void
+_init (void)
+{
+ /* The very first thing we must do is to set up the registers. */
+ call_initialize_minimal ();
+
+ __asm__ ("ALIGN");
+ __asm__("END_INIT");
+ /* Now the epilog. */
+ __asm__ ("\n/*@_init_PROLOG_ENDS*/");
+ __asm__ ("\n/*@_init_EPILOG_BEGINS*/");
+ SECTION(".init");
+}
+__asm__ ("END_INIT");
+
+/* End of the _init epilog, beginning of the _fini prolog. */
+__asm__ ("\n/*@_init_EPILOG_ENDS*/");
+__asm__ ("\n/*@_fini_PROLOG_BEGINS*/");
+
+SECTION (".fini");
+extern void _fini (void);
+void
+_fini (void)
+{
+
+ /* End of the _fini prolog. */
+ __asm__ ("ALIGN");
+ __asm__ ("END_FINI");
+ __asm__ ("\n/*@_fini_PROLOG_ENDS*/");
+
+ {
+ /* Let GCC know that _fini is not a leaf function by having a dummy
+ function call here. We arrange for this call to be omitted from
+ either crt file. */
+ extern void i_am_not_a_leaf (void);
+ i_am_not_a_leaf ();
+ }
+
+ /* Beginning of the _fini epilog. */
+ __asm__ ("\n/*@_fini_EPILOG_BEGINS*/");
+ SECTION (".fini");
+}
+__asm__ ("END_FINI");
+
+/* End of the _fini epilog. Any further generated assembly (e.g. .ident)
+ is shared between both crt files. */
+__asm__ ("\n/*@_fini_EPILOG_ENDS*/");
+__asm__ ("\n/*@TRAILER_BEGINS*/");
+
+/* End of file. */