Show also return address from exception which should suggest where the problem is.
Signed-off-by: Michal Simek michal.simek@xilinx.com ---
arch/microblaze/cpu/exception.c | 2 ++ arch/microblaze/include/asm/asm.h | 4 ++++ 2 files changed, 6 insertions(+)
diff --git a/arch/microblaze/cpu/exception.c b/arch/microblaze/cpu/exception.c index 227842f6a483..45729331f3d3 100644 --- a/arch/microblaze/cpu/exception.c +++ b/arch/microblaze/cpu/exception.c @@ -18,6 +18,8 @@ void _hw_exception_handler (void) /* loading excetpion state register ESR */ MFS (state, resr); printf ("Hardware exception at 0x%x address\n", address); + R17(address); + printf("Return address from exception 0x%x\n", address); switch (state & 0x1f) { /* mask on exception cause */ case 0x1: puts ("Unaligned data access exception\n"); diff --git a/arch/microblaze/include/asm/asm.h b/arch/microblaze/include/asm/asm.h index c1c3b0398579..11f3dd0f0ec0 100644 --- a/arch/microblaze/include/asm/asm.h +++ b/arch/microblaze/include/asm/asm.h @@ -43,6 +43,10 @@ #define R14(val) \ __asm__ __volatile__ ("addi %0, r14, 0":"=r" (val));
+/* get return address from interrupt */ +#define R17(val) \ + __asm__ __volatile__ ("addi %0, r17, 0" : "=r" (val)); + #define NOP __asm__ __volatile__ ("nop");
/* use machine status registe USE_MSR_REG */ -- 1.8.2.3