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-rw-r--r--include/asm-powerpc/bug.h105
1 files changed, 63 insertions, 42 deletions
diff --git a/include/asm-powerpc/bug.h b/include/asm-powerpc/bug.h
index 978b2c7e84ea..f6fa39474846 100644
--- a/include/asm-powerpc/bug.h
+++ b/include/asm-powerpc/bug.h
@@ -11,24 +11,48 @@
11#define BUG_OPCODE .long 0x00b00b00 /* For asm */ 11#define BUG_OPCODE .long 0x00b00b00 /* For asm */
12#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */ 12#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */
13 13
14#ifndef __ASSEMBLY__ 14#ifdef CONFIG_BUG
15
16struct bug_entry {
17 unsigned long bug_addr;
18 long line;
19 const char *file;
20 const char *function;
21};
22
23struct bug_entry *find_bug(unsigned long bugaddr);
24 15
25/* 16#ifdef __ASSEMBLY__
26 * If this bit is set in the line number it means that the trap 17#ifdef CONFIG_DEBUG_BUGVERBOSE
27 * is for WARN_ON rather than BUG or BUG_ON. 18.macro EMIT_BUG_ENTRY addr,file,line,flags
28 */ 19 .section __bug_table,"a"
29#define BUG_WARNING_TRAP 0x1000000 205001: PPC_LONG \addr, 5002f
21 .short \line, \flags
22 .org 5001b+BUG_ENTRY_SIZE
23 .previous
24 .section .rodata,"a"
255002: .asciz "\file"
26 .previous
27.endm
28#else
29 .macro EMIT_BUG_ENTRY addr,file,line,flags
30 .section __bug_table,"a"
315001: PPC_LONG \addr
32 .short \flags
33 .org 5001b+BUG_ENTRY_SIZE
34 .previous
35.endm
36#endif /* verbose */
30 37
31#ifdef CONFIG_BUG 38#else /* !__ASSEMBLY__ */
39/* _EMIT_BUG_ENTRY expects args %0,%1,%2,%3 to be FILE, LINE, flags and
40 sizeof(struct bug_entry), respectively */
41#ifdef CONFIG_DEBUG_BUGVERBOSE
42#define _EMIT_BUG_ENTRY \
43 ".section __bug_table,\"a\"\n" \
44 "2:\t" PPC_LONG "1b, %0\n" \
45 "\t.short %1, %2\n" \
46 ".org 2b+%3\n" \
47 ".previous\n"
48#else
49#define _EMIT_BUG_ENTRY \
50 ".section __bug_table,\"a\"\n" \
51 "2:\t" PPC_LONG "1b\n" \
52 "\t.short %2\n" \
53 ".org 2b+%3\n" \
54 ".previous\n"
55#endif
32 56
33/* 57/*
34 * BUG_ON() and WARN_ON() do their best to cooperate with compile-time 58 * BUG_ON() and WARN_ON() do their best to cooperate with compile-time
@@ -36,13 +60,13 @@ struct bug_entry *find_bug(unsigned long bugaddr);
36 * some compiler versions may not produce optimal results. 60 * some compiler versions may not produce optimal results.
37 */ 61 */
38 62
39#define BUG() do { \ 63#define BUG() do { \
40 __asm__ __volatile__( \ 64 __asm__ __volatile__( \
41 "1: twi 31,0,0\n" \ 65 "1: twi 31,0,0\n" \
42 ".section __bug_table,\"a\"\n" \ 66 _EMIT_BUG_ENTRY \
43 "\t"PPC_LONG" 1b,%0,%1,%2\n" \ 67 : : "i" (__FILE__), "i" (__LINE__), \
44 ".previous" \ 68 "i" (0), "i" (sizeof(struct bug_entry))); \
45 : : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \ 69 for(;;) ; \
46} while (0) 70} while (0)
47 71
48#define BUG_ON(x) do { \ 72#define BUG_ON(x) do { \
@@ -51,23 +75,21 @@ struct bug_entry *find_bug(unsigned long bugaddr);
51 BUG(); \ 75 BUG(); \
52 } else { \ 76 } else { \
53 __asm__ __volatile__( \ 77 __asm__ __volatile__( \
54 "1: "PPC_TLNEI" %0,0\n" \ 78 "1: "PPC_TLNEI" %4,0\n" \
55 ".section __bug_table,\"a\"\n" \ 79 _EMIT_BUG_ENTRY \
56 "\t"PPC_LONG" 1b,%1,%2,%3\n" \ 80 : : "i" (__FILE__), "i" (__LINE__), "i" (0), \
57 ".previous" \ 81 "i" (sizeof(struct bug_entry)), \
58 : : "r" ((long)(x)), "i" (__LINE__), \ 82 "r" ((long)(x))); \
59 "i" (__FILE__), "i" (__FUNCTION__)); \
60 } \ 83 } \
61} while (0) 84} while (0)
62 85
63#define __WARN() do { \ 86#define __WARN() do { \
64 __asm__ __volatile__( \ 87 __asm__ __volatile__( \
65 "1: twi 31,0,0\n" \ 88 "1: twi 31,0,0\n" \
66 ".section __bug_table,\"a\"\n" \ 89 _EMIT_BUG_ENTRY \
67 "\t"PPC_LONG" 1b,%0,%1,%2\n" \ 90 : : "i" (__FILE__), "i" (__LINE__), \
68 ".previous" \ 91 "i" (BUGFLAG_WARNING), \
69 : : "i" (__LINE__ + BUG_WARNING_TRAP), \ 92 "i" (sizeof(struct bug_entry))); \
70 "i" (__FILE__), "i" (__FUNCTION__)); \
71} while (0) 93} while (0)
72 94
73#define WARN_ON(x) ({ \ 95#define WARN_ON(x) ({ \
@@ -77,13 +99,12 @@ struct bug_entry *find_bug(unsigned long bugaddr);
77 __WARN(); \ 99 __WARN(); \
78 } else { \ 100 } else { \
79 __asm__ __volatile__( \ 101 __asm__ __volatile__( \
80 "1: "PPC_TLNEI" %0,0\n" \ 102 "1: "PPC_TLNEI" %4,0\n" \
81 ".section __bug_table,\"a\"\n" \ 103 _EMIT_BUG_ENTRY \
82 "\t"PPC_LONG" 1b,%1,%2,%3\n" \ 104 : : "i" (__FILE__), "i" (__LINE__), \
83 ".previous" \ 105 "i" (BUGFLAG_WARNING), \
84 : : "r" (__ret_warn_on), \ 106 "i" (sizeof(struct bug_entry)), \
85 "i" (__LINE__ + BUG_WARNING_TRAP), \ 107 "r" (__ret_warn_on)); \
86 "i" (__FILE__), "i" (__FUNCTION__)); \
87 } \ 108 } \
88 unlikely(__ret_warn_on); \ 109 unlikely(__ret_warn_on); \
89}) 110})
@@ -91,8 +112,8 @@ struct bug_entry *find_bug(unsigned long bugaddr);
91#define HAVE_ARCH_BUG 112#define HAVE_ARCH_BUG
92#define HAVE_ARCH_BUG_ON 113#define HAVE_ARCH_BUG_ON
93#define HAVE_ARCH_WARN_ON 114#define HAVE_ARCH_WARN_ON
94#endif /* CONFIG_BUG */
95#endif /* __ASSEMBLY __ */ 115#endif /* __ASSEMBLY __ */
116#endif /* CONFIG_BUG */
96 117
97#include <asm-generic/bug.h> 118#include <asm-generic/bug.h>
98 119
generated by cgit v1.2.2 (git 2.25.0) at 2025-06-02 21:06:28 -0400