| 1 |
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| 2 | #ifndef _PARISC_BUG_H
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| 3 | #define _PARISC_BUG_H
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| 4 |
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| 5 | |
| 6 | * Tell the user there is some problem.
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| 7 | * The offending file and line are encoded in the __bug_table section.
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| 8 |
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| 9 |
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| 10 | #ifdef CONFIG_BUG
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| 11 | #define HAVE_ARCH_BUG
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| 12 | #define HAVE_ARCH_WARN_ON
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| 13 |
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| 14 |
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| 15 | #define PARISC_BUG_BREAK_ASM "break 0x1f, 0x1fff"
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| 16 | #define PARISC_BUG_BREAK_INSN 0x03ffe01f
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| 17 |
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| 18 | #ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
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| 19 | # define __BUG_REL(val) ".word " __stringify(val) " - ."
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| 20 | #else
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| 21 | # define __BUG_REL(val) ".word " __stringify(val)
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| 22 | #endif
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| 23 |
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| 24 |
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| 25 | #ifdef CONFIG_DEBUG_BUGVERBOSE
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| 26 | #define BUG() \
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| 27 | do { \
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| 28 | asm volatile("\n" \
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| 29 | "1:\t" PARISC_BUG_BREAK_ASM "\n" \
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| 30 | "\t.pushsection __bug_table,\"a\"\n" \
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| 31 | "\t.align 4\n" \
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| 32 | "2:\t" __BUG_REL(1b) "\n" \
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| 33 | "\t" __BUG_REL(%c0) "\n" \
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| 34 | "\t.short %1, %2\n" \
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| 35 | "\t.blockz %3-2*4-2*2\n" \
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| 36 | "\t.popsection" \
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| 37 | : : "i" (__FILE__), "i" (__LINE__), \
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| 38 | "i" (0), "i" (sizeof(struct bug_entry)) ); \
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| 39 | unreachable(); \
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| 40 | } while(0)
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| 41 |
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| 42 | #else
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| 43 | #define BUG() \
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| 44 | do { \
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| 45 | asm volatile(PARISC_BUG_BREAK_ASM : : ); \
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| 46 | unreachable(); \
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| 47 | } while(0)
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| 48 | #endif
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| 49 |
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| 50 | #ifdef CONFIG_DEBUG_BUGVERBOSE
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| 51 | #define __WARN_FLAGS(cond_str, flags) \
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| 52 | do { \
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| 53 | asm volatile("\n" \
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| 54 | "1:\t" PARISC_BUG_BREAK_ASM "\n" \
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| 55 | "\t.pushsection __bug_table,\"a\"\n" \
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| 56 | "\t.align 4\n" \
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| 57 | "2:\t" __BUG_REL(1b) "\n" \
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| 58 | "\t" __BUG_REL(%c0) "\n" \
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| 59 | "\t.short %1, %2\n" \
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| 60 | "\t.blockz %3-2*4-2*2\n" \
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| 61 | "\t.popsection" \
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| 62 | : : "i" (WARN_CONDITION_STR(cond_str) __FILE__), "i" (__LINE__), \
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| 63 | "i" (BUGFLAG_WARNING|(flags)), \
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| 64 | "i" (sizeof(struct bug_entry)) ); \
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| 65 | } while(0)
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| 66 | #else
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| 67 | #define __WARN_FLAGS(cond_str, flags) \
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| 68 | do { \
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| 69 | asm volatile("\n" \
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| 70 | "1:\t" PARISC_BUG_BREAK_ASM "\n" \
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| 71 | "\t.pushsection __bug_table,\"a\"\n" \
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| 72 | "\t.align 4\n" \
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| 73 | "2:\t" __BUG_REL(1b) "\n" \
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| 74 | "\t.short %0\n" \
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| 75 | "\t.blockz %1-4-2\n" \
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| 76 | "\t.popsection" \
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| 77 | : : "i" (BUGFLAG_WARNING|(flags)), \
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| 78 | "i" (sizeof(struct bug_entry)) ); \
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| 79 | } while(0)
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| 80 | #endif
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| 81 |
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| 82 |
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| 83 | #define WARN_ON(x) ({ \
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| 84 | int __ret_warn_on = !!(x); \
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| 85 | if (__builtin_constant_p(__ret_warn_on)) { \
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| 86 | if (__ret_warn_on) \
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| 87 | __WARN(); \
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| 88 | } else { \
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| 89 | if (unlikely(__ret_warn_on)) \
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| 90 | __WARN(); \
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| 91 | } \
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| 92 | unlikely(__ret_warn_on); \
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| 93 | })
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| 94 |
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| 95 | #endif
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| 96 |
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| 97 | #include <asm-generic/bug.h>
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| 98 | #endif
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| 99 |
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