From: Kumar Gala Date: Wed, 30 Apr 2008 10:44:53 +0000 (+1000) Subject: [POWERPC] Set lower flag bits in regs->trap to indicate debug level exception X-Git-Tag: v2.6.27-rc1~1058^2~219 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=663276b7c6340e755ed62bed67a2b96f4fc3d513;p=linux-2.6 [POWERPC] Set lower flag bits in regs->trap to indicate debug level exception We use the low bits of regs->trap as flag bits. We already indicate critical and machine check level exceptions via this mechanism. Extend it to indicate debug level exceptions. Signed-off-by: Kumar Gala Signed-off-by: Paul Mackerras --- diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index aefafc6330..721faef870 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -272,7 +272,7 @@ label: /* continue normal handling for a critical exception... */ \ 2: mfspr r4,SPRN_DBSR; \ addi r3,r1,STACK_FRAME_OVERHEAD; \ - EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, debug_transfer_to_handler, ret_from_debug_exc) + EXC_XFER_TEMPLATE(DebugException, 0x2008, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, debug_transfer_to_handler, ret_from_debug_exc) #define DEBUG_CRIT_EXCEPTION \ START_EXCEPTION(DebugCrit); \ diff --git a/include/asm-powerpc/ptrace.h b/include/asm-powerpc/ptrace.h index 39023dde1c..38d87e5e56 100644 --- a/include/asm-powerpc/ptrace.h +++ b/include/asm-powerpc/ptrace.h @@ -119,6 +119,7 @@ extern int ptrace_put_reg(struct task_struct *task, int regno, #ifndef __powerpc64__ #define IS_CRITICAL_EXC(regs) (((regs)->trap & 2) != 0) #define IS_MCHECK_EXC(regs) (((regs)->trap & 4) != 0) +#define IS_DEBUG_EXC(regs) (((regs)->trap & 8) != 0) #endif /* ! __powerpc64__ */ #define TRAP(regs) ((regs)->trap & ~0xF) #ifdef __powerpc64__