diff options
Diffstat (limited to 'arch/um/sys-i386/signal.c')
| -rw-r--r-- | arch/um/sys-i386/signal.c | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c index 1cbf95f..187ea27 100644 --- a/arch/um/sys-i386/signal.c +++ b/arch/um/sys-i386/signal.c @@ -13,9 +13,6 @@ #include "sigcontext.h" #include "registers.h" #include "mode.h" - -#ifdef CONFIG_MODE_SKAS - #include "skas.h" void copy_sc(union uml_pt_regs *regs, void *from) @@ -108,61 +105,6 @@ int copy_sc_to_user_skas(struct sigcontext __user *to, struct _fpstate __user *t return copy_to_user(to, &sc, sizeof(sc)) || copy_to_user(to_fp, fpregs, sizeof(fpregs)); } -#endif - -#ifdef CONFIG_MODE_TT - -/* These copy a sigcontext to/from userspace. They copy the fpstate pointer, - * blowing away the old, good one. So, that value is saved, and then restored - * after the sigcontext copy. In copy_from, the variable holding the saved - * fpstate pointer, and the sigcontext that it should be restored to are both - * in the kernel, so we can just restore using an assignment. In copy_to, the - * saved pointer is in the kernel, but the sigcontext is in userspace, so we - * copy_to_user it. - */ -int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext __user *from, - int fpsize) -{ - struct _fpstate *to_fp; - struct _fpstate __user *from_fp; - unsigned long sigs; - int err; - - to_fp = to->fpstate; - sigs = to->oldmask; - err = copy_from_user(to, from, sizeof(*to)); - from_fp = to->fpstate; - to->oldmask = sigs; - to->fpstate = to_fp; - if(to_fp != NULL) - err |= copy_from_user(to_fp, from_fp, fpsize); - return err; -} - -int copy_sc_to_user_tt(struct sigcontext __user *to, struct _fpstate __user *fp, - struct sigcontext *from, int fpsize, unsigned long sp) -{ - struct _fpstate __user *to_fp; - struct _fpstate *from_fp; - int err; - - to_fp = (fp ? fp : (struct _fpstate __user *) (to + 1)); - from_fp = from->fpstate; - err = copy_to_user(to, from, sizeof(*to)); - - /* The SP in the sigcontext is the updated one for the signal - * delivery. The sp passed in is the original, and this needs - * to be restored, so we stick it in separately. - */ - err |= copy_to_user(&SC_SP(to), &sp, sizeof(sp)); - - if(from_fp != NULL){ - err |= copy_to_user(&to->fpstate, &to_fp, sizeof(to->fpstate)); - err |= copy_to_user(to_fp, from_fp, fpsize); - } - return err; -} -#endif static int copy_sc_from_user(struct pt_regs *to, void __user *from) { |