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| author |   Dave Martin <dave.martin@linaro.org> | 2011-05-23 12:22:10 +0100 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-26 10:31:06 +0100 |
| commit | dc2eb928a1bcf6a48f40c1f2ff21b66bdbf91a3c (patch) | |
| tree | 3f877569ca481ad79378ed0e5932006434a1cc1e /arch/arm/include/asm/fiq.h | |
| parent | tmpfs: fix XATTR N overriding POSIX_ACL Y (diff) | |
| download | linux-dev-dc2eb928a1bcf6a48f40c1f2ff21b66bdbf91a3c.tar.xz linux-dev-dc2eb928a1bcf6a48f40c1f2ff21b66bdbf91a3c.zip | |
ARM: 6938/1: fiq: Refactor {get,set}_fiq_regs() for Thumb-2
* To remove the risk of inconvenient register allocation decisions
by the compiler, these functions are separated out as pure
assembler.
* The apcs frame manipulation code is not applicable for Thumb-2
(and also not easily compatible). Since it's not essential to
have a full frame on these leaf assembler functions, the frame
manipulation is removed, in the interests of simplicity.
* Split up ldm/stm instructions to be compatible with Thumb-2,
as well as avoiding instruction forms deprecated on >= ARMv7.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/fiq.h')
| -rw-r--r-- | arch/arm/include/asm/fiq.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/arm/include/asm/fiq.h b/arch/arm/include/asm/fiq.h index 2242ce22ec6c..45bb3eeeab7c 100644 --- a/arch/arm/include/asm/fiq.h +++ b/arch/arm/include/asm/fiq.h @@ -29,9 +29,21 @@ struct fiq_handler { extern int claim_fiq(struct fiq_handler *f); extern void release_fiq(struct fiq_handler *f); extern void set_fiq_handler(void *start, unsigned int length); -extern void set_fiq_regs(struct pt_regs *regs); -extern void get_fiq_regs(struct pt_regs *regs); extern void enable_fiq(int fiq); extern void disable_fiq(int fiq); +/* helpers defined in fiqasm.S: */ +extern void __set_fiq_regs(unsigned long const *regs); +extern void __get_fiq_regs(unsigned long *regs); + +static inline void set_fiq_regs(struct pt_regs const *regs) +{ + __set_fiq_regs(®s->ARM_r8); +} + +static inline void get_fiq_regs(struct pt_regs *regs) +{ + __get_fiq_regs(®s->ARM_r8); +} + #endif |