Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _ASM_POWERPC_BUG_H
2#define _ASM_POWERPC_BUG_H
3
4#include <asm/asm-compat.h>
5/*
6 * Define an illegal instr to trap on the bug.
7 * We don't use 0 because that marks the end of a function
8 * in the ELF ABI. That's "Boo Boo" in case you wonder...
9 */
10#define BUG_OPCODE .long 0x00b00b00 /* For asm */
11#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */
12
13#ifndef __ASSEMBLY__
14
15struct bug_entry {
16 unsigned long bug_addr;
17 long line;
18 const char *file;
19 const char *function;
20};
21
22struct bug_entry *find_bug(unsigned long bugaddr);
23
24/*
25 * If this bit is set in the line number it means that the trap
26 * is for WARN_ON rather than BUG or BUG_ON.
27 */
28#define BUG_WARNING_TRAP 0x1000000
29
30#ifdef CONFIG_BUG
31
32#define BUG() do { \
33 __asm__ __volatile__( \
34 "1: twi 31,0,0\n" \
35 ".section __bug_table,\"a\"\n" \
36 "\t"PPC_LONG" 1b,%0,%1,%2\n" \
37 ".previous" \
38 : : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \
39} while (0)
40
41#define BUG_ON(x) do { \
42 __asm__ __volatile__( \
43 "1: "PPC_TLNEI" %0,0\n" \
44 ".section __bug_table,\"a\"\n" \
45 "\t"PPC_LONG" 1b,%1,%2,%3\n" \
46 ".previous" \
47 : : "r" ((long)(x)), "i" (__LINE__), \
48 "i" (__FILE__), "i" (__FUNCTION__)); \
49} while (0)
50
51#define WARN_ON(x) do { \
52 __asm__ __volatile__( \
53 "1: "PPC_TLNEI" %0,0\n" \
54 ".section __bug_table,\"a\"\n" \
55 "\t"PPC_LONG" 1b,%1,%2,%3\n" \
56 ".previous" \
57 : : "r" ((long)(x)), \
58 "i" (__LINE__ + BUG_WARNING_TRAP), \
59 "i" (__FILE__), "i" (__FUNCTION__)); \
60} while (0)
61
62#define HAVE_ARCH_BUG
63#define HAVE_ARCH_BUG_ON
64#define HAVE_ARCH_WARN_ON
65#endif /* CONFIG_BUG */
66#endif /* __ASSEMBLY __ */
67
68#include <asm-generic/bug.h>
69
70#endif /* _ASM_POWERPC_BUG_H */