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authorWill Deacon <will.deacon@arm.com>2010-09-03 10:42:55 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-09-08 10:05:00 +0100
commit864232fa1a2f8dfe003438ef0851a56722740f3e (patch)
tree0f85f2b1b2f030e7c51f0c69b112dea746b3a861 /arch/arm/include/asm/processor.h
parentf81ef4a920c8e1af75adf9f15042c2daa49d3cb3 (diff)
ARM: 6357/1: hw-breakpoint: add new ptrace requests for hw-breakpoint interaction
For debuggers to take advantage of the hw-breakpoint framework in the kernel, it is necessary to expose the API calls via a ptrace interface. This patch exposes the hardware breakpoints framework as a collection of virtual registers, accesible using PTRACE_SETHBPREGS and PTRACE_GETHBPREGS requests. The breakpoints are stored in the debug_info struct of the running thread. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: S. Karthikeyan <informkarthik@gmail.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/processor.h')
-rw-r--r--arch/arm/include/asm/processor.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
index 7bed3daf83b8..67357baaeeeb 100644
--- a/arch/arm/include/asm/processor.h
+++ b/arch/arm/include/asm/processor.h
@@ -19,6 +19,7 @@
#ifdef __KERNEL__
+#include <asm/hw_breakpoint.h>
#include <asm/ptrace.h>
#include <asm/types.h>
@@ -41,6 +42,9 @@ struct debug_entry {
struct debug_info {
int nsaved;
struct debug_entry bp[2];
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
+ struct perf_event *hbp[ARM_MAX_HBP_SLOTS];
+#endif
};
struct thread_struct {