1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 /*
3 * Preliminary support for HW exception handin
4 *
5 * Copyright (C) 2008-2009 Michal Simek <monst
6 * Copyright (C) 2008-2009 PetaLogix
7 * Copyright (C) 2005 John Williams <jwilliams
8 */
9
10 #ifndef _ASM_MICROBLAZE_EXCEPTIONS_H
11 #define _ASM_MICROBLAZE_EXCEPTIONS_H
12
13 #ifdef __KERNEL__
14 #ifndef __ASSEMBLY__
15
16 /* Macros to enable and disable HW exceptions
17 /* Define MSR enable bit for HW exceptions */
18 #define HWEX_MSR_BIT (1 << 8)
19
20 #if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
21 #define __enable_hw_exceptions()
22 __asm__ __volatile__ (" msrset r0, %0
23 nop;"
24 :
25 : "i" (HWEX_MS
26 : "memory")
27
28 #define __disable_hw_exceptions()
29 __asm__ __volatile__ (" msrclr r0, %0;
30 nop;"
31 :
32 : "i" (HWEX_MS
33 : "memory")
34 #else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_IN
35 #define __enable_hw_exceptions()
36 __asm__ __volatile__ ("
37 mfs r12, r
38 nop;
39 ori r12, r
40 mts rmsr,
41 nop;"
42 :
43 : "i" (HWEX_MS
44 : "memory", "r
45
46 #define __disable_hw_exceptions()
47 __asm__ __volatile__ ("
48 mfs r12, r
49 nop;
50 andi r12, r
51 mts rmsr,
52 nop;"
53 :
54 : "i" (HWEX_MS
55 : "memory", "r
56 #endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_IN
57
58 asmlinkage void full_exception(struct pt_regs
59
60
61 asmlinkage void sw_exception(struct pt_regs *r
62 void bad_page_fault(struct pt_regs *regs, unsi
63
64 void die(const char *str, struct pt_regs *fp,
65 void _exception(int signr, struct pt_regs *reg
66
67 #endif /*__ASSEMBLY__ */
68 #endif /* __KERNEL__ */
69 #endif /* _ASM_MICROBLAZE_EXCEPTIONS_H */
70
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