Show also return address from exception which should suggest where the problem is.
Signed-off-by: Michal Simek <michal.si...@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
pgpjfmYqhJnpI.pgp
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