diff options
Diffstat (limited to 'arch/microblaze/cpu/exception.c')
| -rw-r--r-- | arch/microblaze/cpu/exception.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/microblaze/cpu/exception.c b/arch/microblaze/cpu/exception.c index 64d5fe4a80c..f79e465e1fb 100644 --- a/arch/microblaze/cpu/exception.c +++ b/arch/microblaze/cpu/exception.c @@ -20,11 +20,17 @@ void _hw_exception_handler (void) MFS(state, resr); printf("Hardware exception at 0x%x address\n", address); R17(address); - printf("Return address from exception 0x%x\n", address); if (CONFIG_IS_ENABLED(XILINX_MICROBLAZE0_DELAY_SLOT_EXCEP) && - (state & 0x1000)) + (state & 0x1000)) { + /* + * For exceptions in delay slots, the return address is stored + * in the Branch Target Register (BTR), rather than R17. + */ + MFS(address, rbtr); + puts("Exception in delay slot\n"); + } switch (state & 0x1f) { /* mask on exception cause */ case 0x1: @@ -49,6 +55,8 @@ void _hw_exception_handler (void) puts("Undefined cause\n"); break; } + + printf("Return address from exception 0x%x\n", address); printf("Unaligned %sword access\n", ((state & 0x800) ? "" : "half")); printf("Unaligned %s access\n", ((state & 0x400) ? "store" : "load")); printf("Register R%x\n", (state & 0x3E) >> 5); |