From 3a4b5dca53aecb16db9e007d782b2d1e757e941a Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 3 Sep 2010 10:39:59 +0100 Subject: ARM: 6355/1: hw-breakpoint: add mechanism for hooking into prefetch aborts On ARM processors with hardware breakpoint and watchpoint support, triggering these events results in a debug exception. These manifest as prefetch and data aborts respectively. arch/arm/mm/fault.c already provides hook_fault_code for hooking into data aborts dependent on the DFSR. This patch adds a new function, hook_ifault_code for hooking into prefetch aborts in the same manner. Cc: Frederic Weisbecker Cc: S. Karthikeyan Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/include/asm/system.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/arm/include/asm/system.h') diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index 8ba1ccf82a02..b516cdea5ae2 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -85,6 +85,10 @@ void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int, struct pt_regs *), int sig, int code, const char *name); +void hook_ifault_code(int nr, int (*fn)(unsigned long, unsigned int, + struct pt_regs *), + int sig, int code, const char *name); + #define xchg(ptr,x) \ ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) -- cgit v1.2.2