91 int handle_kernel_fault(struct pt_regs *regs)  in handle_kernel_fault()  argument
97 	fixup = search_exception_tables(regs->pc);  in handle_kernel_fault()
102 	regs->stkadj = frame_extra_sizes(regs->format);  in handle_kernel_fault()
103 	tregs =	(struct pt_regs *)((long)regs + regs->stkadj);  in handle_kernel_fault()
104 	tregs->vector = regs->vector;  in handle_kernel_fault()
107 	tregs->sr = regs->sr;  in handle_kernel_fault()
114 	struct pt_regs *regs = signal_pt_regs();  in ptrace_signal_deliver()  local
115 	if (regs->orig_d0 < 0)  in ptrace_signal_deliver()
117 	switch (regs->d0) {  in ptrace_signal_deliver()
121 		regs->d0 = regs->orig_d0;  in ptrace_signal_deliver()
122 		regs->orig_d0 = -1;  in ptrace_signal_deliver()
123 		regs->pc -= 2;  in ptrace_signal_deliver()
195 static inline void adjustformat(struct pt_regs *regs)  in adjustformat()  argument
199 static inline void save_a5_state(struct sigcontext *sc, struct pt_regs *regs)  in save_a5_state()  argument
214 static inline void adjustformat(struct pt_regs *regs)  in adjustformat()  argument
216 	((struct switch_stack *)regs - 1)->a5 = current->mm->start_data;  in adjustformat()
221 	regs->format = 0x4;  in adjustformat()
224 static inline void save_a5_state(struct sigcontext *sc, struct pt_regs *regs)  in save_a5_state()  argument
226 	sc->sc_a5 = ((struct switch_stack *)regs - 1)->a5;  in save_a5_state()
447 static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)  in save_fpu_state()  argument
469 		    regs->vector >= (VEC_FPBRUC * 4) &&  in save_fpu_state()
470 		    regs->vector <= (VEC_FPNAN * 4)) {  in save_fpu_state()
500 static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs)  in rt_save_fpu_state()  argument
532 		    regs->vector >= (VEC_FPBRUC * 4) &&  in rt_save_fpu_state()
533 		    regs->vector <= (VEC_FPNAN * 4)) {  in rt_save_fpu_state()
583 static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)  in save_fpu_state()  argument
587 static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs)  in rt_save_fpu_state()  argument
594 static int mangle_kernel_stack(struct pt_regs *regs, int formatvec,  in mangle_kernel_stack()  argument
608 		regs->format = formatvec >> 12;  in mangle_kernel_stack()
609 		regs->vector = formatvec & 0xfff;  in mangle_kernel_stack()
611 		struct switch_stack *sw = (struct switch_stack *)regs - 1;  in mangle_kernel_stack()
619 		regs->format = formatvec >> 12;  in mangle_kernel_stack()
620 		regs->vector = formatvec & 0xfff;  in mangle_kernel_stack()
651 restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp)  in restore_sigcontext()  argument
665 	regs->d0 = context.sc_d0;  in restore_sigcontext()
666 	regs->d1 = context.sc_d1;  in restore_sigcontext()
667 	regs->a0 = context.sc_a0;  in restore_sigcontext()
668 	regs->a1 = context.sc_a1;  in restore_sigcontext()
669 	regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff);  in restore_sigcontext()
670 	regs->pc = context.sc_pc;  in restore_sigcontext()
671 	regs->orig_d0 = -1;		/* disable syscall checks */  in restore_sigcontext()
677 	if (err || mangle_kernel_stack(regs, formatvec, fp))  in restore_sigcontext()
687 rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw,  in rt_restore_ucontext()  argument
702 	err |= __get_user(regs->d0, &gregs[0]);  in rt_restore_ucontext()
703 	err |= __get_user(regs->d1, &gregs[1]);  in rt_restore_ucontext()
704 	err |= __get_user(regs->d2, &gregs[2]);  in rt_restore_ucontext()
705 	err |= __get_user(regs->d3, &gregs[3]);  in rt_restore_ucontext()
706 	err |= __get_user(regs->d4, &gregs[4]);  in rt_restore_ucontext()
707 	err |= __get_user(regs->d5, &gregs[5]);  in rt_restore_ucontext()
710 	err |= __get_user(regs->a0, &gregs[8]);  in rt_restore_ucontext()
711 	err |= __get_user(regs->a1, &gregs[9]);  in rt_restore_ucontext()
712 	err |= __get_user(regs->a2, &gregs[10]);  in rt_restore_ucontext()
719 	err |= __get_user(regs->pc, &gregs[16]);  in rt_restore_ucontext()
721 	regs->sr = (regs->sr & 0xff00) | (temp & 0xff);  in rt_restore_ucontext()
722 	regs->orig_d0 = -1;		/* disable syscall checks */  in rt_restore_ucontext()
731 	if (mangle_kernel_stack(regs, temp, &uc->uc_extra))  in rt_restore_ucontext()
743 	struct pt_regs *regs = (struct pt_regs *) (sw + 1);  in do_sigreturn()  local
758 	if (restore_sigcontext(regs, &frame->sc, frame + 1))  in do_sigreturn()
760 	return regs->d0;  in do_sigreturn()
770 	struct pt_regs *regs = (struct pt_regs *) (sw + 1);  in do_rt_sigreturn()  local
782 	if (rt_restore_ucontext(regs, sw, &frame->uc))  in do_rt_sigreturn()
784 	return regs->d0;  in do_rt_sigreturn()
791 static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,  in setup_sigcontext()  argument
796 	sc->sc_d0 = regs->d0;  in setup_sigcontext()
797 	sc->sc_d1 = regs->d1;  in setup_sigcontext()
798 	sc->sc_a0 = regs->a0;  in setup_sigcontext()
799 	sc->sc_a1 = regs->a1;  in setup_sigcontext()
800 	sc->sc_sr = regs->sr;  in setup_sigcontext()
801 	sc->sc_pc = regs->pc;  in setup_sigcontext()
802 	sc->sc_formatvec = regs->format << 12 | regs->vector;  in setup_sigcontext()
803 	save_a5_state(sc, regs);  in setup_sigcontext()
804 	save_fpu_state(sc, regs);  in setup_sigcontext()
807 static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs)  in rt_setup_ucontext()  argument
809 	struct switch_stack *sw = (struct switch_stack *)regs - 1;  in rt_setup_ucontext()
814 	err |= __put_user(regs->d0, &gregs[0]);  in rt_setup_ucontext()
815 	err |= __put_user(regs->d1, &gregs[1]);  in rt_setup_ucontext()
816 	err |= __put_user(regs->d2, &gregs[2]);  in rt_setup_ucontext()
817 	err |= __put_user(regs->d3, &gregs[3]);  in rt_setup_ucontext()
818 	err |= __put_user(regs->d4, &gregs[4]);  in rt_setup_ucontext()
819 	err |= __put_user(regs->d5, &gregs[5]);  in rt_setup_ucontext()
822 	err |= __put_user(regs->a0, &gregs[8]);  in rt_setup_ucontext()
823 	err |= __put_user(regs->a1, &gregs[9]);  in rt_setup_ucontext()
824 	err |= __put_user(regs->a2, &gregs[10]);  in rt_setup_ucontext()
830 	err |= __put_user(regs->pc, &gregs[16]);  in rt_setup_ucontext()
831 	err |= __put_user(regs->sr, &gregs[17]);  in rt_setup_ucontext()
832 	err |= __put_user((regs->format << 12) | regs->vector, &uc->uc_formatvec);  in rt_setup_ucontext()
833 	err |= rt_save_fpu_state(uc, regs);  in rt_setup_ucontext()
846 			struct pt_regs *regs)  in setup_frame()  argument
849 	int fsize = frame_extra_sizes(regs->format);  in setup_frame()
856 			regs->format);  in setup_frame()
864 		err |= copy_to_user (frame + 1, regs + 1, fsize);  in setup_frame()
868 	err |= __put_user(regs->vector, &frame->code);  in setup_frame()
875 	setup_sigcontext(&context, regs, set->sig[0]);  in setup_frame()
898 	regs->pc = (unsigned long) ksig->ka.sa.sa_handler;  in setup_frame()
899 	adjustformat(regs);  in setup_frame()
907 		regs->stkadj = fsize;  in setup_frame()
910 	if (regs->stkadj) {  in setup_frame()
912 			(struct pt_regs *)((ulong)regs + regs->stkadj);  in setup_frame()
914 		printk("Performing stackadjust=%04x\n", regs->stkadj);  in setup_frame()
920 		tregs->pc = regs->pc;  in setup_frame()
921 		tregs->sr = regs->sr;  in setup_frame()
927 			   struct pt_regs *regs)  in setup_rt_frame()  argument
930 	int fsize = frame_extra_sizes(regs->format);  in setup_rt_frame()
936 			regs->format);  in setup_rt_frame()
944 		err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize);  in setup_rt_frame()
955 	err |= rt_setup_ucontext(&frame->uc, regs);  in setup_rt_frame()
986 	regs->pc = (unsigned long) ksig->ka.sa.sa_handler;  in setup_rt_frame()
987 	adjustformat(regs);  in setup_rt_frame()
995 		regs->stkadj = fsize;  in setup_rt_frame()
998 	if (regs->stkadj) {  in setup_rt_frame()
1000 			(struct pt_regs *)((ulong)regs + regs->stkadj);  in setup_rt_frame()
1002 		printk("Performing stackadjust=%04x\n", regs->stkadj);  in setup_rt_frame()
1008 		tregs->pc = regs->pc;  in setup_rt_frame()
1009 		tregs->sr = regs->sr;  in setup_rt_frame()
1015 handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)  in handle_restart()  argument
1017 	switch (regs->d0) {  in handle_restart()
1021 		regs->d0 = -EINTR;  in handle_restart()
1026 			regs->d0 = __NR_restart_syscall;  in handle_restart()
1027 			regs->pc -= 2;  in handle_restart()
1030 		regs->d0 = -EINTR;  in handle_restart()
1035 			regs->d0 = -EINTR;  in handle_restart()
1041 		regs->d0 = regs->orig_d0;  in handle_restart()
1042 		regs->pc -= 2;  in handle_restart()
1051 handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
1056 	if (regs->orig_d0 >= 0)  in handle_signal()
1058 		handle_restart(regs, &ksig->ka, 1);  in handle_signal()
1062 		err = setup_rt_frame(ksig, oldset, regs);  in handle_signal()
1064 		err = setup_frame(ksig, oldset, regs);  in handle_signal()
1069 		regs->sr &= ~0x8000;  in handle_signal()
1079 static void do_signal(struct pt_regs *regs)  in do_signal()  argument
1083 	current->thread.esp0 = (unsigned long) regs;  in do_signal()
1087 		handle_signal(&ksig, regs);  in do_signal()
1092 	if (regs->orig_d0 >= 0)  in do_signal()
1094 		handle_restart(regs, NULL, 0);  in do_signal()
1100 void do_notify_resume(struct pt_regs *regs)  in do_notify_resume()  argument
1103 		do_signal(regs);  in do_notify_resume()
1106 		tracehook_notify_resume(regs);  in do_notify_resume()