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Diffstat (limited to 'sysdeps/arm/machine-gmon.h')
| -rw-r--r-- | sysdeps/arm/machine-gmon.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/sysdeps/arm/machine-gmon.h b/sysdeps/arm/machine-gmon.h new file mode 100644 index 0000000000..fa3f65237d --- /dev/null +++ b/sysdeps/arm/machine-gmon.h @@ -0,0 +1,67 @@ +/* Machine-dependent definitions for profiling support. ARM version. + Copyright (C) 1996, 1997, 1998 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. + + 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; 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) __attribute_used__; + +#define _MCOUNT_DECL(frompc, selfpc) \ +static void mcount_internal (u_long frompc, u_long selfpc) + +/* This macro/func MUST save r0, r1 because the compiler inserts + blind calls to _mount(), ignoring the fact that _mcount may + clobber registers; therefore, _mcount may NOT clobber registers */ +/* if (this_fp!=0) { + r0 = this_fp + r1 = this_lr + r1 = [r1-4] which is caller's lr + if (r1!=0) + r1 = caller's lr + call mcount_internal(this_lr, caller's_lr) + } +*/ + +#define MCOUNT \ +void _mcount (void) \ +{ \ + __asm__("stmdb sp!, {r0, r1, r2, r3};" \ + "movs fp, fp;" \ + "moveq r1, #0;" \ + "ldrne r1, [fp, $-4];" \ + "ldrne r0, [fp, $-12];" \ + "movnes r0, r0;" \ + "ldrne r0, [r0, $-4];" \ + "movs r0, r0;" \ + "blne mcount_internal;" \ + "ldmia sp!, {r0, r1, r2, r3}"); \ +} + |