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microblaze: Do not use r0_ram space for hw exception debugging

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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>
This commit is contained in:
Michal Simek 2011-01-31 15:07:53 +01:00
parent a5abba989d
commit c06b3a0682
1 changed files with 16 additions and 4 deletions
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20
arch/microblaze/kernel/hw_exception_handler.S
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@ -77,6 +77,8 @@
#include <asm/signal.h> #include <asm/signal.h>
#include <asm/asm-offsets.h> #include <asm/asm-offsets.h>
#undef DEBUG
/* Helpful Macros */ /* Helpful Macros */
#define NUM_TO_REG(num) r ## num #define NUM_TO_REG(num) r ## num
@ -228,6 +230,16 @@
/* wrappers to restore state before coming to entry.S */ /* wrappers to restore state before coming to entry.S */
#ifdef CONFIG_MMU #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 .section .rodata
.align 4 .align 4
_MB_HW_ExceptionVectorTable: _MB_HW_ExceptionVectorTable:
@ -329,12 +341,12 @@ not_in_delay_slot:
#ifdef DEBUG #ifdef DEBUG
/* counting which exception happen */ /* counting which exception happen */
lwi r5, r0, 0x200 + TOPHYS(r0_ram) lwi r5, r0, TOPHYS(exception_debug_table)
addi r5, r5, 1 addi r5, r5, 1
swi r5, r0, 0x200 + TOPHYS(r0_ram) swi r5, r0, TOPHYS(exception_debug_table)
lwi r5, r6, 0x200 + TOPHYS(r0_ram) lwi r5, r6, TOPHYS(exception_debug_table)
addi r5, r5, 1 addi r5, r5, 1
swi r5, r6, 0x200 + TOPHYS(r0_ram) swi r5, r6, TOPHYS(exception_debug_table)
#endif #endif
/* end */ /* end */
/* Load the HW Exception vector */ /* Load the HW Exception vector */