1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Preliminary support for HW exception handing for Microblaze
6 * Copyright (C) 2008-2009 PetaLogix
10 #ifndef _ASM_MICROBLAZE_EXCEPTIONS_H
11 #define _ASM_MICROBLAZE_EXCEPTIONS_H
16 #define EX_HANDLER_STACK_SIZ (4*19)
21 /* Macros to enable and disable HW exceptions in the MSR */
22 /* Define MSR enable bit for HW exceptions */
23 #define HWEX_MSR_BIT (1 << 8)
25 #if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
26 #define __enable_hw_exceptions() \
27 __asm__ __volatile__ (" msrset r0, %0; \
30 : "i" (HWEX_MSR_BIT) \
33 #define __disable_hw_exceptions() \
34 __asm__ __volatile__ (" msrclr r0, %0; \
37 : "i" (HWEX_MSR_BIT) \
39 #else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
40 #define __enable_hw_exceptions() \
41 __asm__ __volatile__ (" \
48 : "i" (HWEX_MSR_BIT) \
51 #define __disable_hw_exceptions() \
52 __asm__ __volatile__ (" \
59 : "i" (HWEX_MSR_BIT) \
61 #endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
63 asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
66 asmlinkage void sw_exception(struct pt_regs *regs);
67 void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig);
69 void die(const char *str, struct pt_regs *fp, long err);
70 void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr);
72 #endif /*__ASSEMBLY__ */
73 #endif /* __KERNEL__ */
74 #endif /* _ASM_MICROBLAZE_EXCEPTIONS_H */