microblaze: Do not use r0_ram space for hw exception debugging
Remove hw exception counting space from r0_ram. Use special
exception_debug_table poll for exception statistic.
Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S
index 782680d..ec5e99d 100644
--- a/arch/microblaze/kernel/hw_exception_handler.S
+++ b/arch/microblaze/kernel/hw_exception_handler.S
@@ -77,6 +77,8 @@
#include <asm/signal.h>
#include <asm/asm-offsets.h>
+#undef DEBUG
+
/* Helpful Macros */
#define NUM_TO_REG(num) r ## num
@@ -228,6 +230,16 @@
/* wrappers to restore state before coming to entry.S */
#ifdef CONFIG_MMU
+#ifdef DEBUG
+/* Create space for exception counting. */
+.section .data
+.global exception_debug_table
+.align 4
+exception_debug_table:
+ /* Look at exception vector table. There is 32 exceptions * word size */
+ .space (32 * 4)
+#endif /* DEBUG */
+
.section .rodata
.align 4
_MB_HW_ExceptionVectorTable:
@@ -329,12 +341,12 @@
#ifdef DEBUG
/* counting which exception happen */
- lwi r5, r0, 0x200 + TOPHYS(r0_ram)
+ lwi r5, r0, TOPHYS(exception_debug_table)
addi r5, r5, 1
- swi r5, r0, 0x200 + TOPHYS(r0_ram)
- lwi r5, r6, 0x200 + TOPHYS(r0_ram)
+ swi r5, r0, TOPHYS(exception_debug_table)
+ lwi r5, r6, TOPHYS(exception_debug_table)
addi r5, r5, 1
- swi r5, r6, 0x200 + TOPHYS(r0_ram)
+ swi r5, r6, TOPHYS(exception_debug_table)
#endif
/* end */
/* Load the HW Exception vector */