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author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-22 22:46:28 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-22 22:46:28 -0700 |
commit | 6f3cafce0ed24372084b5648c9e8a6aacbaf9900 (patch) | |
tree | a20de49dbad477a608d1df3ce19f3eeb68417585 /arch/arm/nwfpe | |
parent | Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-serial (diff) | |
parent | [ARM] 3629/1: S3C24XX: fix missing bracket in regs-dsc.h (diff) | |
download | linux-dev-6f3cafce0ed24372084b5648c9e8a6aacbaf9900.tar.xz linux-dev-6f3cafce0ed24372084b5648c9e8a6aacbaf9900.zip |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (21 commits)
[ARM] 3629/1: S3C24XX: fix missing bracket in regs-dsc.h
[ARM] 3537/1: Rework DMA-bounce locking for finer granularity
[ARM] 3601/1: i.MX/MX1 DMA error handling for signaled channels only
[ARM] 3597/1: ixp4xx/nslu2: Board support for new LED subsystem
[ARM] 3595/1: ixp4xx/nas100d: Board support for new LED subsystem
[ARM] 3626/1: ARM EABI: fix syscall restarting
[ARM] 3628/1: S3C24XX: add get_rate call to struct clk
[ARM] 3627/1: S3C24XX: split s3c2410 clocks from core clocks
[ARM] 3613/1: S3C2410: Add sysdev and sysclass
[ARM] 3624/1: Report true modem control line states
[ARM] 3620/2: ixp23xx: add uengine loader support
[ARM] 3618/1: add defconfig for logicpd pxa270 card engine
[ARM] 3617/1: ep93xx: fix slightly incorrect timer tick rate
[ARM] 3616/1: fix timer handler wrap logic for a number of platforms
[ARM] 3615/1: ixp23xx: use platform devices for physmap flash
[ARM] 3614/1: ep93xx: use platform devices for physmap flash
[ARM] 3621/1: fix compilation breakage for pnx4008
[ARM] 3623/1: pnx4008: move GPIO-related defines to gpio.h
[ARM] 3622/1: pnx4008: remove clk_use/clk_unuse
[ARM] Enable VFP to be built when non-VFP capable CPUs are selected
...
Diffstat (limited to 'arch/arm/nwfpe')
-rw-r--r-- | arch/arm/nwfpe/fpmodule.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/arch/arm/nwfpe/fpmodule.c b/arch/arm/nwfpe/fpmodule.c index 2dfe1ac42ee8..7d977d23f026 100644 --- a/arch/arm/nwfpe/fpmodule.c +++ b/arch/arm/nwfpe/fpmodule.c @@ -33,7 +33,8 @@ #include <linux/signal.h> #include <linux/sched.h> #include <linux/init.h> -/* XXX */ + +#include <asm/thread_notify.h> #include "softfloat.h" #include "fpopcode.h" @@ -56,16 +57,28 @@ void fp_send_sig(unsigned long sig, struct task_struct *p, int priv); extern char fpe_type[]; #endif +static int nwfpe_notify(struct notifier_block *self, unsigned long cmd, void *v) +{ + struct thread_info *thread = v; + + if (cmd == THREAD_NOTIFY_FLUSH) + nwfpe_init_fpa(&thread->fpstate); + + return NOTIFY_DONE; +} + +static struct notifier_block nwfpe_notifier_block = { + .notifier_call = nwfpe_notify, +}; + /* kernel function prototypes required */ void fp_setup(void); /* external declarations for saved kernel symbols */ extern void (*kern_fp_enter)(void); -extern void (*fp_init)(union fp_state *); /* Original value of fp_enter from kernel before patched by fpe_init. */ static void (*orig_fp_enter)(void); -static void (*orig_fp_init)(union fp_state *); /* forward declarations */ extern void nwfpe_enter(void); @@ -88,20 +101,20 @@ static int __init fpe_init(void) printk(KERN_WARNING "NetWinder Floating Point Emulator V0.97 (" NWFPE_BITS " precision)\n"); + thread_register_notifier(&nwfpe_notifier_block); + /* Save pointer to the old FP handler and then patch ourselves in */ orig_fp_enter = kern_fp_enter; - orig_fp_init = fp_init; kern_fp_enter = nwfpe_enter; - fp_init = nwfpe_init_fpa; return 0; } static void __exit fpe_exit(void) { + thread_unregister_notifier(&nwfpe_notifier_block); /* Restore the values we saved earlier. */ kern_fp_enter = orig_fp_enter; - fp_init = orig_fp_init; } /* |