mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
94bb0c1ab2
In order not to be left behind, we add jump label support for MIPS. Tested on 64-bit big endian (Octeon), and 32-bit little endian (malta/qemu). Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jason Baron <jbaron@redhat.com> Patchwork: https://patchwork.linux-mips.org/patch/1923/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
49 lines
956 B
C
49 lines
956 B
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (c) 2010 Cavium Networks, Inc.
|
|
*/
|
|
#ifndef _ASM_MIPS_JUMP_LABEL_H
|
|
#define _ASM_MIPS_JUMP_LABEL_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#define JUMP_LABEL_NOP_SIZE 4
|
|
|
|
#ifdef CONFIG_64BIT
|
|
#define WORD_INSN ".dword"
|
|
#else
|
|
#define WORD_INSN ".word"
|
|
#endif
|
|
|
|
#define JUMP_LABEL(key, label) \
|
|
do { \
|
|
asm goto("1:\tnop\n\t" \
|
|
"nop\n\t" \
|
|
".pushsection __jump_table, \"a\"\n\t" \
|
|
WORD_INSN " 1b, %l[" #label "], %0\n\t" \
|
|
".popsection\n\t" \
|
|
: : "i" (key) : : label); \
|
|
} while (0)
|
|
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#ifdef CONFIG_64BIT
|
|
typedef u64 jump_label_t;
|
|
#else
|
|
typedef u32 jump_label_t;
|
|
#endif
|
|
|
|
struct jump_entry {
|
|
jump_label_t code;
|
|
jump_label_t target;
|
|
jump_label_t key;
|
|
};
|
|
|
|
#endif /* _ASM_MIPS_JUMP_LABEL_H */
|