projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _ASMARM_BUG_H |
| 2 | #define _ASMARM_BUG_H | |
| 3 | ||
| 9f97da78 | 4 | #include <linux/linkage.h> |
| 63328070 BD |
5 | #include <linux/types.h> |
| 6 | #include <asm/opcodes.h> | |
| 1da177e4 | 7 | |
| 87e040b6 SG |
8 | /* |
| 9 | * Use a suitable undefined instruction to use for ARM/Thumb2 bug handling. | |
| 10 | * We need to be careful not to conflict with those used by other modules and | |
| 11 | * the register_undef_hook() system. | |
| 12 | */ | |
| 13 | #ifdef CONFIG_THUMB2_KERNEL | |
| 14 | #define BUG_INSTR_VALUE 0xde02 | |
| 63328070 | 15 | #define BUG_INSTR(__value) __inst_thumb16(__value) |
| 1da177e4 | 16 | #else |
| 87e040b6 | 17 | #define BUG_INSTR_VALUE 0xe7f001f2 |
| 63328070 | 18 | #define BUG_INSTR(__value) __inst_arm(__value) |
| 87e040b6 | 19 | #endif |
| 1da177e4 | 20 | |
| 1da177e4 | 21 | |
| 87e040b6 SG |
22 | #define BUG() _BUG(__FILE__, __LINE__, BUG_INSTR_VALUE) |
| 23 | #define _BUG(file, line, value) __BUG(file, line, value) | |
| 24 | ||
| 25 | #ifdef CONFIG_DEBUG_BUGVERBOSE | |
| 26 | ||
| 27 | /* | |
| 28 | * The extra indirection is to ensure that the __FILE__ string comes through | |
| 29 | * OK. Many version of gcc do not support the asm %c parameter which would be | |
| 30 | * preferable to this unpleasantness. We use mergeable string sections to | |
| 31 | * avoid multiple copies of the string appearing in the kernel image. | |
| 32 | */ | |
| 33 | ||
| 34 | #define __BUG(__file, __line, __value) \ | |
| 35 | do { \ | |
| 63328070 | 36 | asm volatile("1:\t" BUG_INSTR(__value) "\n" \ |
| 87e040b6 SG |
37 | ".pushsection .rodata.str, \"aMS\", %progbits, 1\n" \ |
| 38 | "2:\t.asciz " #__file "\n" \ | |
| 39 | ".popsection\n" \ | |
| 325cdacd | 40 | ".pushsection __bug_table,\"aw\"\n" \ |
| a4a5a737 | 41 | ".align 2\n" \ |
| 87e040b6 SG |
42 | "3:\t.word 1b, 2b\n" \ |
| 43 | "\t.hword " #__line ", 0\n" \ | |
| 44 | ".popsection"); \ | |
| 45 | unreachable(); \ | |
| 46 | } while (0) | |
| 47 | ||
| e9c38ceb | 48 | #else |
| 87e040b6 SG |
49 | |
| 50 | #define __BUG(__file, __line, __value) \ | |
| 51 | do { \ | |
| 63328070 | 52 | asm volatile(BUG_INSTR(__value) "\n"); \ |
| 87e040b6 SG |
53 | unreachable(); \ |
| 54 | } while (0) | |
| 55 | #endif /* CONFIG_DEBUG_BUGVERBOSE */ | |
| 1da177e4 LT |
56 | |
| 57 | #define HAVE_ARCH_BUG | |
| c8538a7a | 58 | |
| 1da177e4 LT |
59 | #include <asm-generic/bug.h> |
| 60 | ||
| 9f97da78 DH |
61 | struct pt_regs; |
| 62 | void die(const char *msg, struct pt_regs *regs, int err); | |
| 63 | ||
| 64 | struct siginfo; | |
| 65 | void arm_notify_die(const char *str, struct pt_regs *regs, struct siginfo *info, | |
| 66 | unsigned long err, unsigned long trap); | |
| 67 | ||
| 68 | #ifdef CONFIG_ARM_LPAE | |
| 69 | #define FAULT_CODE_ALIGNMENT 33 | |
| 70 | #define FAULT_CODE_DEBUG 34 | |
| 71 | #else | |
| 72 | #define FAULT_CODE_ALIGNMENT 1 | |
| 73 | #define FAULT_CODE_DEBUG 2 | |
| 74 | #endif | |
| 75 | ||
| 76 | void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int, | |
| 77 | struct pt_regs *), | |
| 78 | int sig, int code, const char *name); | |
| 79 | ||
| 80 | void hook_ifault_code(int nr, int (*fn)(unsigned long, unsigned int, | |
| 81 | struct pt_regs *), | |
| 82 | int sig, int code, const char *name); | |
| 83 | ||
| 84 | extern asmlinkage void c_backtrace(unsigned long fp, int pmode); | |
| 85 | ||
| 86 | struct mm_struct; | |
| 87 | extern void show_pte(struct mm_struct *mm, unsigned long addr); | |
| 88 | extern void __show_regs(struct pt_regs *); | |
| 89 | ||
| 1da177e4 | 90 | #endif |