diff options
Diffstat (limited to 'sysdeps/arm')
| -rw-r--r-- | sysdeps/arm/machine-gmon.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/arm/machine-gmon.h b/sysdeps/arm/machine-gmon.h new file mode 100644 index 0000000000..27643df884 --- /dev/null +++ b/sysdeps/arm/machine-gmon.h @@ -0,0 +1,55 @@ +/* Machine-dependent definitions for profiling support. ARM version. + Copyright (C) 1996, 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* GCC for the ARM cannot compile __builtin_return_address(N) for N != 0, + so we must use an assembly stub. */ + +#include <sysdep.h> +#ifndef NO_UNDERSCORES +/* The asm symbols for C functions are `_function'. + The canonical name for the counter function is `mcount', no _. */ +void _mcount (void) asm ("mcount"); +#else +/* The canonical name for the function is `_mcount' in both C and asm, + but some old asm code might assume it's `mcount'. */ +void _mcount (void); +weak_alias (_mcount, mcount) +#endif + +static void mcount_internal (u_long frompc, u_long selfpc); + +#define _MCOUNT_DECL(frompc, selfpc) \ +static void mcount_internal (u_long frompc, u_long selfpc) + +#define MCOUNT \ +void _mcount (void) \ +{ \ + register unsigned long int frompc, selfpc; \ + __asm__("movs fp, fp; " \ + "moveq %0, $0; " \ + "ldrne %0, [fp, $-4]; " \ + "ldrne %1, [fp, $-12]; " \ + "movnes %1, %1; " \ + "ldrne %1, [%1, $-4]; " \ + : "=g" (selfpc), "=g" (frompc) \ + : : "cc" \ + ); \ + if (selfpc) \ + mcount_internal(frompc, selfpc); \ +} |