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70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
/* Profiling support code for A/UX
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Copyright (C) 1996 Free Software Foundation, Inc.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file with other programs, and to distribute
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those programs without any restriction coming from the use of this
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file. (The General Public License restrictions do apply in other
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respects; for example, they cover modification of the file, and
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distribution when not linked into another program.)
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This file is distributed in the hope that it will be useful, but
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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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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* As a special exception, if you link this library with files
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compiled with GCC to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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/* This routine is called at the beginning of functions compiled with -p
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or -pg. The A/UX libraries call mcount%, but gas cannot generate
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symbols with embedded percent signs. Previous ports of GCC to A/UX
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have done things like (1) assemble a stub routine with the native
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assembler, or (2) assemble a stub routine with gas and edit the object
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file. This solution has the advantage that it can interoperate with
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the A/UX version and can be used in an eventual port of glibc to A/UX. */
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#ifndef __GNUC__
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#error This file uses GNU C extensions
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#endif
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#include <mon.h>
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#ifdef IN_GCC
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#include "tm.h"
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#endif
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struct cnt *_countbase;
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#ifdef FUNCTION_PROFILER_SYMBOL
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void __mcount() __asm__(FUNCTION_PROFILER_SYMBOL);
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#endif
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void __mcount()
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{
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register long **pfncnt __asm__("%a0");
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register long *fncnt = *pfncnt;
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if (!fncnt)
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{
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struct cnt *newcnt = _countbase++;
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newcnt->fnpc = (char *)__builtin_return_address(0);
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*pfncnt = fncnt = &newcnt->mcnt;
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}
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*fncnt += 1;
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}
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