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72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/* Low-level statistical profiling support function. Linux/ARM version.
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Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <signal.h>
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#include <asm/ptrace.h>
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union k_sigcontext
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{
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struct
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{
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unsigned long int trap_no;
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unsigned long int error_code;
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unsigned long int oldmask;
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unsigned long int arm_r0;
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unsigned long int arm_r1;
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unsigned long int arm_r2;
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unsigned long int arm_r3;
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unsigned long int arm_r4;
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unsigned long int arm_r5;
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unsigned long int arm_r6;
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unsigned long int arm_r7;
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unsigned long int arm_r8;
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unsigned long int arm_r9;
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unsigned long int arm_r10;
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unsigned long int arm_fp;
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unsigned long int arm_ip;
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unsigned long int arm_sp;
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unsigned long int arm_lr;
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unsigned long int arm_pc;
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unsigned long int arm_cpsr;
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} v21;
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struct
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{
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unsigned long int magic;
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struct pt_regs reg;
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unsigned long int trap_no;
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unsigned long int error_code;
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unsigned long int oldmask;
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} v20;
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};
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void
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profil_counter (int signo, int _a2, int _a3, int _a4, union k_sigcontext sc)
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{
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/* The format of struct sigcontext changed between 2.0 and 2.1 kernels.
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Fortunately 2.0 puts a magic number in the first word and this is not
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a legal value for `trap_no', so we can tell them apart. */
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void *pc;
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if (sc.v20.magic == 0x4B534154)
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pc = (void *) sc.v20.reg.ARM_pc;
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else
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pc = (void *) sc.v21.arm_pc;
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profil_count (pc);
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}
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