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arm64: move AARCH64_BREAK_FAULT into insn-def.h

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If CONFIG_ARM64_LSE_ATOMICS is off, encoders for LSE-related instructions
can return AARCH64_BREAK_FAULT directly in insn.h. In order to access
AARCH64_BREAK_FAULT in insn.h, we can not include debug-monitors.h in
insn.h, because debug-monitors.h has already depends on insn.h, so just
move AARCH64_BREAK_FAULT into insn-def.h.

It will be used by the following patch to eliminate unnecessary LSE-related
encoders when CONFIG_ARM64_LSE_ATOMICS is off.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20220217072232.1186625-2-houtao1@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Hou Tao 2022-02-17 15:22:29 +08:00 • committed by Will Deacon
parent a6aab01882
commit 97e58e395e
2 changed files with 14 additions and 12 deletions
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12
arch/arm64/include/asm/debug-monitors.h
View file

@ -34,18 +34,6 @@
*/
#define BREAK_INSTR_SIZE AARCH64_INSN_SIZE
/*
* BRK instruction encoding
* The #imm16 value should be placed at bits[20:5] within BRK ins
*/
#define AARCH64_BREAK_MON 0xd4200000
/*
* BRK instruction for provoking a fault on purpose
* Unlike kgdb, #imm16 value with unallocated handler is used for faulting.
*/
#define AARCH64_BREAK_FAULT (AARCH64_BREAK_MON | (FAULT_BRK_IMM << 5))
#define AARCH64_BREAK_KGDB_DYN_DBG \
(AARCH64_BREAK_MON | (KGDB_DYN_DBG_BRK_IMM << 5))

14
arch/arm64/include/asm/insn-def.h
View file

@ -3,7 +3,21 @@
#ifndef __ASM_INSN_DEF_H
#define __ASM_INSN_DEF_H
#include <asm/brk-imm.h>
/* A64 instructions are always 32 bits. */
#define AARCH64_INSN_SIZE 4
/*
* BRK instruction encoding
* The #imm16 value should be placed at bits[20:5] within BRK ins
*/
#define AARCH64_BREAK_MON 0xd4200000
/*
* BRK instruction for provoking a fault on purpose
* Unlike kgdb, #imm16 value with unallocated handler is used for faulting.
*/
#define AARCH64_BREAK_FAULT (AARCH64_BREAK_MON | (FAULT_BRK_IMM << 5))
#endif /* __ASM_INSN_DEF_H */