Contributors: 13
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ingo Molnar |
35 |
27.78% |
2 |
11.11% |
| Peter Zijlstra |
32 |
25.40% |
4 |
22.22% |
| Thomas Gleixner |
28 |
22.22% |
2 |
11.11% |
| Nick Desaulniers |
9 |
7.14% |
1 |
5.56% |
| Nadav Amit |
6 |
4.76% |
1 |
5.56% |
| Arnd Bergmann |
4 |
3.17% |
1 |
5.56% |
| Matt Mackall |
3 |
2.38% |
1 |
5.56% |
| H. Peter Anvin |
3 |
2.38% |
1 |
5.56% |
| Andi Kleen |
2 |
1.59% |
1 |
5.56% |
| Alexey Dobriyan |
1 |
0.79% |
1 |
5.56% |
| Josh Poimboeuf |
1 |
0.79% |
1 |
5.56% |
| Vincent Mailhol |
1 |
0.79% |
1 |
5.56% |
| Greg Kroah-Hartman |
1 |
0.79% |
1 |
5.56% |
| Total |
126 |
|
18 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_BUG_H
#define _ASM_X86_BUG_H
#include <linux/stringify.h>
#include <linux/instrumentation.h>
#include <linux/objtool.h>
/*
* Despite that some emulators terminate on UD2, we use it for WARN().
*/
#define ASM_UD2 ".byte 0x0f, 0x0b"
#define INSN_UD2 0x0b0f
#define LEN_UD2 2
#ifdef CONFIG_GENERIC_BUG
#ifdef CONFIG_X86_32
# define __BUG_REL(val) ".long " __stringify(val)
#else
# define __BUG_REL(val) ".long " __stringify(val) " - ."
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
#define _BUG_FLAGS(ins, flags, extra) \
do { \
asm_inline volatile("1:\t" ins "\n" \
".pushsection __bug_table,\"aw\"\n" \
"2:\t" __BUG_REL(1b) "\t# bug_entry::bug_addr\n" \
"\t" __BUG_REL(%c0) "\t# bug_entry::file\n" \
"\t.word %c1" "\t# bug_entry::line\n" \
"\t.word %c2" "\t# bug_entry::flags\n" \
"\t.org 2b+%c3\n" \
".popsection\n" \
extra \
: : "i" (__FILE__), "i" (__LINE__), \
"i" (flags), \
"i" (sizeof(struct bug_entry))); \
} while (0)
#else /* !CONFIG_DEBUG_BUGVERBOSE */
#define _BUG_FLAGS(ins, flags, extra) \
do { \
asm_inline volatile("1:\t" ins "\n" \
".pushsection __bug_table,\"aw\"\n" \
"2:\t" __BUG_REL(1b) "\t# bug_entry::bug_addr\n" \
"\t.word %c0" "\t# bug_entry::flags\n" \
"\t.org 2b+%c1\n" \
".popsection\n" \
extra \
: : "i" (flags), \
"i" (sizeof(struct bug_entry))); \
} while (0)
#endif /* CONFIG_DEBUG_BUGVERBOSE */
#else
#define _BUG_FLAGS(ins, flags, extra) asm volatile(ins)
#endif /* CONFIG_GENERIC_BUG */
#define HAVE_ARCH_BUG
#define BUG() \
do { \
instrumentation_begin(); \
_BUG_FLAGS(ASM_UD2, 0, ""); \
__builtin_unreachable(); \
} while (0)
/*
* This instrumentation_begin() is strictly speaking incorrect; but it
* suppresses the complaints from WARN()s in noinstr code. If such a WARN()
* were to trigger, we'd rather wreck the machine in an attempt to get the
* message out than not know about it.
*/
#define __WARN_FLAGS(flags) \
do { \
__auto_type __flags = BUGFLAG_WARNING|(flags); \
instrumentation_begin(); \
_BUG_FLAGS(ASM_UD2, __flags, ASM_REACHABLE); \
instrumentation_end(); \
} while (0)
#include <asm-generic/bug.h>
#endif /* _ASM_X86_BUG_H */