diff options
| -rw-r--r-- | arch/microblaze/cpu/exception.c | 2 | ||||
| -rw-r--r-- | arch/microblaze/include/asm/asm.h | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/microblaze/cpu/exception.c b/arch/microblaze/cpu/exception.c index 227842f..4572933 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 c1c3b03..11f3dd0 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 */ |