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| author |   Michael Neuling <mikey@neuling.org> | 2012-12-20 14:06:44 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-01-10 17:01:44 +1100 |
| commit | 9422de3e953d0e60eb95f5430a9dd803eec1c6d7 (patch) | |
| tree | 7255a4a2b873a0c3daf7b312a0845202edf6b2d5 /arch/powerpc/include/asm/processor.h | |
| parent | powerpc: Add DAWR/X SPR number definitions (diff) | |
| download | linux-dev-9422de3e953d0e60eb95f5430a9dd803eec1c6d7.tar.xz linux-dev-9422de3e953d0e60eb95f5430a9dd803eec1c6d7.zip | |
powerpc: Hardware breakpoints rewrite to handle non DABR breakpoint registers
This is a rewrite so that we don't assume we are using the DABR throughout the
code. We now use the arch_hw_breakpoint to store the breakpoint in a generic
manner in the thread_struct, rather than storing the raw DABR value.
The ptrace GET/SET_DEBUGREG interface currently passes the raw DABR in from
userspace. We keep this functionality, so that future changes (like the POWER8
DAWR), will still fake the DABR to userspace.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/processor.h')
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 37f87f069cbf..7938658c168d 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -33,6 +33,7 @@ #include <linux/cache.h> #include <asm/ptrace.h> #include <asm/types.h> +#include <asm/hw_breakpoint.h> /* We do _not_ want to define new machine types at all, those must die * in favor of using the device-tree @@ -225,8 +226,7 @@ struct thread_struct { struct perf_event *last_hit_ubp; #endif /* CONFIG_HAVE_HW_BREAKPOINT */ #endif - unsigned long dabr; /* Data address breakpoint register */ - unsigned long dabrx; /* ... extension */ + struct arch_hw_breakpoint hw_brk; /* info on the hardware breakpoint */ unsigned long trap_nr; /* last trap # on this thread */ #ifdef CONFIG_ALTIVEC /* Complete AltiVec register set */ |