From d6a61bfc06d6f2248f3e75f208d64e794082013c Mon Sep 17 00:00:00 2001 From: Luis Machado Date: Thu, 24 Jul 2008 02:10:41 +1000 Subject: powerpc: BookE hardware watchpoint support This patch implements support for HW based watchpoint via the DBSR_DAC (Data Address Compare) facility of the BookE processors. It does so by interfacing with the existing DABR breakpoint code and adding the necessary bits and pieces for the new bits to be properly set or cleared Signed-off-by: Luis Machado Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/mm/fault.c | 25 ------------------------- 1 file changed, 25 deletions(-) (limited to 'arch/powerpc/mm/fault.c') diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 1707d00331f..565b7a237c8 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -100,31 +100,6 @@ static int store_updates_sp(struct pt_regs *regs) return 0; } -#if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE)) -static void do_dabr(struct pt_regs *regs, unsigned long address, - unsigned long error_code) -{ - siginfo_t info; - - if (notify_die(DIE_DABR_MATCH, "dabr_match", regs, error_code, - 11, SIGSEGV) == NOTIFY_STOP) - return; - - if (debugger_dabr_match(regs)) - return; - - /* Clear the DABR */ - set_dabr(0); - - /* Deliver the signal to userspace */ - info.si_signo = SIGTRAP; - info.si_errno = 0; - info.si_code = TRAP_HWBKPT; - info.si_addr = (void __user *)address; - force_sig_info(SIGTRAP, &info, current); -} -#endif /* !(CONFIG_4xx || CONFIG_BOOKE)*/ - /* * For 600- and 800-family processors, the error_code parameter is DSISR * for a data fault, SRR1 for an instruction fault. For 400-family processors -- cgit v1.2.3