diff options
author | Dave Jones <davej@redhat.com> | 2006-06-29 16:01:54 -0400 |
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committer | Dave Jones <davej@redhat.com> | 2006-06-29 16:01:54 -0400 |
commit | 55b4d6a52195a8f277ffddf755ddaff359878f41 (patch) | |
tree | 06a3183a562f8da4688f65023f7a18dcad702956 /arch/arm/nwfpe/fpmodule.c | |
parent | adf8a287150667feb5747f8beade62acacc17d4e (diff) | |
parent | 1f1332f727c3229eb2166a83fec5d3de6a73dce2 (diff) |
Merge ../linus
Conflicts:
drivers/char/agp/Kconfig
Diffstat (limited to 'arch/arm/nwfpe/fpmodule.c')
-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 2dfe1ac42ee..7d977d23f02 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; } /* |