mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 18:37:53 +07:00
fa3eb71d96
Currently ASM_BUG() and its constituent macros define local assembler labels 0, 1 and 2 internally, which carries a high risk of clash with callers' labels and consequent mis-assembly. This patch gives the labels a big random offset to minimise the chance of such errors. Signed-off-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
#ifndef __ASM_ASM_BUG_H
|
|
/*
|
|
* Copyright (C) 2017 ARM Limited
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#define __ASM_ASM_BUG_H
|
|
|
|
#include <asm/brk-imm.h>
|
|
|
|
#ifdef CONFIG_DEBUG_BUGVERBOSE
|
|
#define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line)
|
|
#define __BUGVERBOSE_LOCATION(file, line) \
|
|
.pushsection .rodata.str,"aMS",@progbits,1; \
|
|
14472: .string file; \
|
|
.popsection; \
|
|
\
|
|
.long 14472b - 14470b; \
|
|
.short line;
|
|
#else
|
|
#define _BUGVERBOSE_LOCATION(file, line)
|
|
#endif
|
|
|
|
#ifdef CONFIG_GENERIC_BUG
|
|
|
|
#define __BUG_ENTRY(flags) \
|
|
.pushsection __bug_table,"aw"; \
|
|
.align 2; \
|
|
14470: .long 14471f - 14470b; \
|
|
_BUGVERBOSE_LOCATION(__FILE__, __LINE__) \
|
|
.short flags; \
|
|
.popsection; \
|
|
14471:
|
|
#else
|
|
#define __BUG_ENTRY(flags)
|
|
#endif
|
|
|
|
#define ASM_BUG_FLAGS(flags) \
|
|
__BUG_ENTRY(flags) \
|
|
brk BUG_BRK_IMM
|
|
|
|
#define ASM_BUG() ASM_BUG_FLAGS(0)
|
|
|
|
#endif /* __ASM_ASM_BUG_H */
|