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+
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+ Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ In addition to the permissions in the GNU Lesser General Public
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+ License, the Free Software Foundation gives you unlimited
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+ permission to link the compiled version of this file with other
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+ programs, and to distribute those programs without any restriction
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+ coming from the use of this file. (The GNU Lesser General Public
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+ License restrictions do apply in other respects; for example, they
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+ cover modification of the file, and distribution when not linked
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+ into another program.)
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, write to the Free
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+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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+ 02111-1307 USA. */
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+
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+
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+ script into two files: crti.s and crtn.s.
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+
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+ * crti.s puts a function prologue at the beginning of the
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+ .init and .fini sections and defines global symbols for
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+ those addresses, so they can be called as functions.
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+
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+ * crtn.s puts the corresponding function epilogues
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+ in the .init and .fini sections. */
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+
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+#include <stdlib.h>
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+
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+#undef GMON_SUPPORT
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+
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+
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+ easier to insert the necessary directives into crtn.S. */
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+#define SECTION(x) asm (".section " x )
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+
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+
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+asm ("\n/*@HEADER_ENDS*/");
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+
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+
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+
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+extern void dummy (void (*foo) (void));
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+void
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+dummy (void (*foo) (void))
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+{
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+ if (foo)
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+ (*foo) ();
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+}
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+
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+
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+
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+asm ("\n/*@_init_PROLOG_BEGINS*/");
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+
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+#ifdef GMON_SUPPORT
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+static void
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+call_gmon_start(void)
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+{
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+ extern void __gmon_start__ (void) __attribute__ ((weak));
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+ void (*gmon_start) (void) = __gmon_start__;
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+
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+ if (gmon_start)
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+ gmon_start ();
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+}
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+#endif
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+
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+SECTION (".init");
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+extern void _init (void);
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+void
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+_init (void)
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+{
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+#ifdef GMON_SUPPORT
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+
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+ appears before crtbegin.o in the link, so the header elt of .ctors
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+ would come after the elt for __gmon_start__. One approach is for
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+ gcrt1.o to reference a symbol which would be defined by some library
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+ module which has a constructor; but then user code's constructors
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+ would come first, and not be profiled. */
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+ call_gmon_start ();
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+#endif
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+
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+ asm ("ALIGN");
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+ asm("END_INIT");
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+
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+ asm ("\n/*@_init_PROLOG_ENDS*/");
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+ asm ("\n/*@_init_EPILOG_BEGINS*/");
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+ SECTION(".init");
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+}
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+asm ("END_INIT");
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+
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+
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+asm ("\n/*@_init_EPILOG_ENDS*/");
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+asm ("\n/*@_fini_PROLOG_BEGINS*/");
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+
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+SECTION (".fini");
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+extern void _fini (void);
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+void
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+_fini (void)
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+{
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+
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+
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+ asm ("ALIGN");
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+ asm ("END_FINI");
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+ asm ("\n/*@_fini_PROLOG_ENDS*/");
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+
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+ {
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+
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+ function call here. We arrange for this call to be omitted from
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+ either crt file. */
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+ extern void i_am_not_a_leaf (void);
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+ i_am_not_a_leaf ();
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+ }
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+
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+
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+ asm ("\n/*@_fini_EPILOG_BEGINS*/");
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+ SECTION (".fini");
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+}
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+asm ("END_FINI");
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+
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+
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+ is shared between both crt files. */
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+asm ("\n/*@_fini_EPILOG_ENDS*/");
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+asm ("\n/*@TRAILER_BEGINS*/");
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+
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+
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