diff options
Diffstat (limited to 'roms/u-boot/arch/microblaze/cpu/exception.c')
| -rw-r--r-- | roms/u-boot/arch/microblaze/cpu/exception.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/roms/u-boot/arch/microblaze/cpu/exception.c b/roms/u-boot/arch/microblaze/cpu/exception.c new file mode 100644 index 000000000..b8dedc4e1 --- /dev/null +++ b/roms/u-boot/arch/microblaze/cpu/exception.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK <monstr@monstr.eu> + */ + +#include <common.h> +#include <hang.h> +#include <asm/asm.h> + +void _hw_exception_handler (void) +{ + int address = 0; + int state = 0; + + /* loading address of exception EAR */ + MFS(address, rear); + /* 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"); + break; + case 0x2: + puts("Illegal op-code exception\n"); + break; + case 0x3: + puts("Instruction bus error exception\n"); + break; + case 0x4: + puts("Data bus error exception\n"); + break; + case 0x5: + puts("Divide by zero exception\n"); + break; +#ifdef MICROBLAZE_V5 + case 0x7: + puts("Priviledged or stack protection violation exception\n"); + break; + case 0x1000: + puts("Exception in delay slot\n"); + break; +#endif + default: + puts("Undefined cause\n"); + break; + } + 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); + hang(); +} + +#ifdef CONFIG_SYS_USR_EXCEP +void _exception_handler (void) +{ + puts("User vector_exception\n"); + hang(); +} +#endif |