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authorK.Prasad <prasad@linux.vnet.ibm.com>2009-06-01 23:43:10 +0530
committerFrederic Weisbecker <fweisbec@gmail.com>2009-06-02 22:46:57 +0200
commitb332828c39326b1dca617f387dd15d12e81cd5f0 (patch)
treeb8cff4bd7a5b42a723e26d69cce4f3030bf68e62 /arch/x86/power
parent43bd1236234cacbc18d1476a9b57e7a306efddf5 (diff)
downloadlinux-b332828c39326b1dca617f387dd15d12e81cd5f0.tar.gz
hw-breakpoints: prepare the code for Hardware Breakpoint interfaces
The generic hardware breakpoint interface provides an abstraction of hardware breakpoints in front of specific arch implementations for both kernel and user side breakpoints. This includes execution breakpoints and read/write breakpoints, also known as "watchpoints". This patch introduces header files containing constants, structure definitions and declaration of functions used by the hardware breakpoint core and x86 specific code. It also introduces an array based storage for the debug-register values in 'struct thread_struct', while modifying all users of debugreg<n> member in the structure. [ Impact: add headers for new hardware breakpoint interface ] Original-patch-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: K.Prasad <prasad@linux.vnet.ibm.com> Reviewed-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'arch/x86/power')
-rw-r--r--arch/x86/power/cpu_32.c8
-rw-r--r--arch/x86/power/cpu_64.c8
2 files changed, 8 insertions, 8 deletions
diff --git a/arch/x86/power/cpu_32.c b/arch/x86/power/cpu_32.c
index ce702c5b3a2..51991394800 100644
--- a/arch/x86/power/cpu_32.c
+++ b/arch/x86/power/cpu_32.c
@@ -84,10 +84,10 @@ static void fix_processor_context(void)
* Now maybe reload the debug registers
*/
if (current->thread.debugreg7) {
- set_debugreg(current->thread.debugreg0, 0);
- set_debugreg(current->thread.debugreg1, 1);
- set_debugreg(current->thread.debugreg2, 2);
- set_debugreg(current->thread.debugreg3, 3);
+ set_debugreg(current->thread.debugreg[0], 0);
+ set_debugreg(current->thread.debugreg[1], 1);
+ set_debugreg(current->thread.debugreg[2], 2);
+ set_debugreg(current->thread.debugreg[3], 3);
/* no 4 and 5 */
set_debugreg(current->thread.debugreg6, 6);
set_debugreg(current->thread.debugreg7, 7);
diff --git a/arch/x86/power/cpu_64.c b/arch/x86/power/cpu_64.c
index 5343540f260..1e3bdcc959f 100644
--- a/arch/x86/power/cpu_64.c
+++ b/arch/x86/power/cpu_64.c
@@ -163,10 +163,10 @@ static void fix_processor_context(void)
* Now maybe reload the debug registers
*/
if (current->thread.debugreg7){
- loaddebug(&current->thread, 0);
- loaddebug(&current->thread, 1);
- loaddebug(&current->thread, 2);
- loaddebug(&current->thread, 3);
+ set_debugreg(current->thread.debugreg[0], 0);
+ set_debugreg(current->thread.debugreg[1], 1);
+ set_debugreg(current->thread.debugreg[2], 2);
+ set_debugreg(current->thread.debugreg[3], 3);
/* no 4 and 5 */
loaddebug(&current->thread, 6);
loaddebug(&current->thread, 7);