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2.0 kernel support.

This commit is contained in:
Ulrich Drepper 1998-04-07 09:11:50 +00:00
parent 80509c667f
commit 859d74afa9
1 changed files with 48 additions and 3 deletions
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51
sysdeps/unix/sysv/linux/arm/profil-counter.h
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@ -1,5 +1,5 @@
/* Low-level statistical profiling support function. Linux/ARM version.
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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
@ -18,9 +18,54 @@
Boston, MA 02111-1307, USA. */
#include <signal.h>
#include <asm/ptrace.h>
union k_sigcontext
{
struct
{
unsigned long int trap_no;
unsigned long int error_code;
unsigned long int oldmask;
unsigned long int arm_r0;
unsigned long int arm_r1;
unsigned long int arm_r2;
unsigned long int arm_r3;
unsigned long int arm_r4;
unsigned long int arm_r5;
unsigned long int arm_r6;
unsigned long int arm_r7;
unsigned long int arm_r8;
unsigned long int arm_r9;
unsigned long int arm_r10;
unsigned long int arm_fp;
unsigned long int arm_ip;
unsigned long int arm_sp;
unsigned long int arm_lr;
unsigned long int arm_pc;
unsigned long int arm_cpsr;
} v21;
struct
{
unsigned long int magic;
struct pt_regs reg;
unsigned long int trap_no;
unsigned long int error_code;
unsigned long int oldmask;
} v20;
};
void
profil_counter (int signo, struct sigcontext sc)
profil_counter (int signo, int _a2, int _a3, int _a4, union k_sigcontext sc)
{
profil_count ((void *) sc.reg.ARM_pc);
/* The format of struct sigcontext changed between 2.0 and 2.1 kernels.
Fortunately 2.0 puts a magic number in the first word and this is not
a legal value for `trap_no', so we can tell them apart. */
void *pc;
if (sc.v20.magic == 0x4B534154)
pc = (void *) sc.v20.reg.ARM_pc;
else
pc = (void *) sc.v21.arm_pc;
profil_count (pc);
}