diff options
| author | Rabin Vincent <rabin@rab.in> | 2012-02-18 17:52:41 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-03-24 10:38:56 +0100 |
| commit | 09f05d8529ff4aa92311c1a55ce35ac98cb59b8c (patch) | |
| tree | 0196ddc9e80d74c8d3e3473bd7bc21b3e520c3d9 /arch/arm/kernel/insn.h | |
| parent | ARM: 7333/2: jump label: detect %c support for ARM (diff) | |
| download | linux-09f05d8529ff4aa92311c1a55ce35ac98cb59b8c.tar.xz linux-09f05d8529ff4aa92311c1a55ce35ac98cb59b8c.zip | |
ARM: 7334/1: add jump label support
Add the arch-specific code to support jump labels for ARM and Thumb-2.
This code will only be activated on compilers that are capable of
building it. It has been tested with GCC 4.6 patched with the patch
from GCC bug 48637.
Cc: Jason Baron <jbaron@redhat.com>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/insn.h')
| -rw-r--r-- | arch/arm/kernel/insn.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/kernel/insn.h b/arch/arm/kernel/insn.h index 994d60fd3ff5..e96065da4dae 100644 --- a/arch/arm/kernel/insn.h +++ b/arch/arm/kernel/insn.h @@ -1,6 +1,16 @@ #ifndef __ASM_ARM_INSN_H #define __ASM_ARM_INSN_H +static inline unsigned long +arm_gen_nop(void) +{ +#ifdef CONFIG_THUMB2_KERNEL + return 0xf3af8000; /* nop.w */ +#else + return 0xe1a00000; /* mov r0, r0 */ +#endif +} + unsigned long __arm_gen_branch(unsigned long pc, unsigned long addr, bool link); |