1 files changed, 0 insertions, 336 deletions
diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c
deleted file mode 100644
index ba4d8d6330f1..000000000000
--- a/arch/m32r/kernel/signal.c
+++ /dev/null
@@ -1,336 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/m32r/kernel/signal.c
- *
- *  Copyright (c) 2003  Hitoshi Yamamoto
- *
- *  Taken from i386 version.
- *  Copyright (C) 1991, 1992  Linus Torvalds
- *
- *  1997-11-28  Modified for POSIX.1b signals by Richard Henderson
- *  2000-06-20  Pentium III FXSR, SSE support by Gareth Hughes
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/unistd.h>
-#include <linux/stddef.h>
-#include <linux/personality.h>
-#include <linux/tracehook.h>
-#include <asm/cacheflush.h>
-#include <asm/ucontext.h>
-#include <linux/uaccess.h>
-
-#define DEBUG_SIG 0
-
-/*
- * Do a signal return; undo the signal stack.
- */
-
-struct rt_sigframe
-{
-	int sig;
-	struct siginfo __user *pinfo;
-	void __user *puc;
-	struct siginfo info;
-	struct ucontext uc;
-//	struct _fpstate fpstate;
-};
-
-static int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
-		   int *r0_p)
-{
-	unsigned int err = 0;
-
-	/* Always make any pending restarted system calls return -EINTR */
-	current->restart_block.fn = do_no_restart_syscall;
-
-#define COPY(x)		err |= __get_user(regs->x, &sc->sc_##x)
-	COPY(r4);
-	COPY(r5);
-	COPY(r6);
-	COPY(pt_regs);
-	/* COPY(r0); Skip r0 */
-	COPY(r1);
-	COPY(r2);
-	COPY(r3);
-	COPY(r7);
-	COPY(r8);
-	COPY(r9);
-	COPY(r10);
-	COPY(r11);
-	COPY(r12);
-	COPY(acc0h);
-	COPY(acc0l);
-	COPY(acc1h);		/* ISA_DSP_LEVEL2 only */
-	COPY(acc1l);		/* ISA_DSP_LEVEL2 only */
-	COPY(psw);
-	COPY(bpc);
-	COPY(bbpsw);
-	COPY(bbpc);
-	COPY(spu);
-	COPY(fp);
-	COPY(lr);
-	COPY(spi);
-#undef COPY
-
-	regs->syscall_nr = -1;	/* disable syscall checks */
-	err |= __get_user(*r0_p, &sc->sc_r0);
-
-	return err;
-}
-
-asmlinkage int
-sys_rt_sigreturn(unsigned long r0, unsigned long r1,
-		 unsigned long r2, unsigned long r3, unsigned long r4,
-		 unsigned long r5, unsigned long r6, struct pt_regs *regs)
-{
-	struct rt_sigframe __user *frame = (struct rt_sigframe __user *)regs->spu;
-	sigset_t set;
-	int result;
-
-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
-		goto badframe;
-	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
-		goto badframe;
-
-	set_current_blocked(&set);
-
-	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &result))
-		goto badframe;
-
-	if (restore_altstack(&frame->uc.uc_stack))
-		goto badframe;
-
-	return result;
-
-badframe:
-	force_sig(SIGSEGV, current);
-	return 0;
-}
-
-/*
- * Set up a signal frame.
- */
-
-static int
-setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
-	         unsigned long mask)
-{
-	int err = 0;
-
-#define COPY(x)	err |= __put_user(regs->x, &sc->sc_##x)
-	COPY(r4);
-	COPY(r5);
-	COPY(r6);
-	COPY(pt_regs);
-	COPY(r0);
-	COPY(r1);
-	COPY(r2);
-	COPY(r3);
-	COPY(r7);
-	COPY(r8);
-	COPY(r9);
-	COPY(r10);
-	COPY(r11);
-	COPY(r12);
-	COPY(acc0h);
-	COPY(acc0l);
-	COPY(acc1h);		/* ISA_DSP_LEVEL2 only */
-	COPY(acc1l);		/* ISA_DSP_LEVEL2 only */
-	COPY(psw);
-	COPY(bpc);
-	COPY(bbpsw);
-	COPY(bbpc);
-	COPY(spu);
-	COPY(fp);
-	COPY(lr);
-	COPY(spi);
-#undef COPY
-
-	err |= __put_user(mask, &sc->oldmask);
-
-	return err;
-}
-
-/*
- * Determine which stack to use..
- */
-static inline void __user *
-get_sigframe(struct ksignal *ksig, unsigned long sp, size_t frame_size)
-{
-	return (void __user *)((sigsp(sp, ksig) - frame_size) & -8ul);
-}
-
-static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
-			  struct pt_regs *regs)
-{
-	struct rt_sigframe __user *frame;
-	int err = 0;
-	int sig = ksig->sig;
-
-	frame = get_sigframe(ksig, regs->spu, sizeof(*frame));
-
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-		return -EFAULT;
-
-	err |= __put_user(sig, &frame->sig);
-	if (err)
-		return -EFAULT;
-
-	err |= __put_user(&frame->info, &frame->pinfo);
-	err |= __put_user(&frame->uc, &frame->puc);
-	err |= copy_siginfo_to_user(&frame->info, &ksig->info);
-	if (err)
-		return -EFAULT;
-
-	/* Create the ucontext.  */
-	err |= __put_user(0, &frame->uc.uc_flags);
-	err |= __put_user(0, &frame->uc.uc_link);
-	err |= __save_altstack(&frame->uc.uc_stack, regs->spu);
-	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
-	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
-	if (err)
-		return -EFAULT;
-
-	/* Set up to return from userspace.  */
-	regs->lr = (unsigned long)ksig->ka.sa.sa_restorer;
-
-	/* Set up registers for signal handler */
-	regs->spu = (unsigned long)frame;
-	regs->r0 = sig;	/* Arg for signal handler */
-	regs->r1 = (unsigned long)&frame->info;
-	regs->r2 = (unsigned long)&frame->uc;
-	regs->bpc = (unsigned long)ksig->ka.sa.sa_handler;
-
-#if DEBUG_SIG
-	printk("SIG deliver (%s:%d): sp=%p pc=%p\n",
-		current->comm, current->pid, frame, regs->pc);
-#endif
-
-	return 0;
-}
-
-static int prev_insn(struct pt_regs *regs)
-{
-	u16 inst;
-	if (get_user(inst, (u16 __user *)(regs->bpc - 2)))
-		return -EFAULT;
-	if ((inst & 0xfff0) == 0x10f0)	/* trap ? */
-		regs->bpc -= 2;
-	else
-		regs->bpc -= 4;
-	regs->syscall_nr = -1;
-	return 0;
-}
-
-/*
- * OK, we're invoking a handler
- */
-
-static void
-handle_signal(struct ksignal *ksig, struct pt_regs *regs)
-{
-	int ret;
-
-	/* Are we from a system call? */
-	if (regs->syscall_nr >= 0) {
-		/* If so, check system call restarting.. */
-		switch (regs->r0) {
-		        case -ERESTART_RESTARTBLOCK:
-			case -ERESTARTNOHAND:
-				regs->r0 = -EINTR;
-				break;
-
-			case -ERESTARTSYS:
-				if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
-					regs->r0 = -EINTR;
-					break;
-				}
-			/* fallthrough */
-			case -ERESTARTNOINTR:
-				regs->r0 = regs->orig_r0;
-				if (prev_insn(regs) < 0)
-					return;
-		}
-	}
-
-	/* Set up the stack frame */
-	ret = setup_rt_frame(ksig, sigmask_to_save(), regs);
-
-	signal_setup_done(ret, ksig, 0);
-}
-
-/*
- * Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- */
-static void do_signal(struct pt_regs *regs)
-{
-	struct ksignal ksig;
-
-	/*
-	 * We want the common case to go fast, which
-	 * is why we may in certain cases get here from
-	 * kernel mode. Just return without doing anything
-	 * if so.
-	 */
-	if (!user_mode(regs))
-		return;
-
-	if (get_signal(&ksig)) {
-		/* Re-enable any watchpoints before delivering the
-		 * signal to user space. The processor register will
-		 * have been cleared if the watchpoint triggered
-		 * inside the kernel.
-		 */
-
-		/* Whee!  Actually deliver the signal.  */
-		handle_signal(&ksig, regs);
-
-		return;
-	}
-
-	/* Did we come from a system call? */
-	if (regs->syscall_nr >= 0) {
-		/* Restart the system call - no handlers present */
-		if (regs->r0 == -ERESTARTNOHAND ||
-		    regs->r0 == -ERESTARTSYS ||
-		    regs->r0 == -ERESTARTNOINTR) {
-			regs->r0 = regs->orig_r0;
-			prev_insn(regs);
-		} else if (regs->r0 == -ERESTART_RESTARTBLOCK){
-			regs->r0 = regs->orig_r0;
-			regs->r7 = __NR_restart_syscall;
-			prev_insn(regs);
-		}
-	}
-	restore_saved_sigmask();
-}
-
-/*
- * notification of userspace execution resumption
- * - triggered by current->work.notify_resume
- */
-void do_notify_resume(struct pt_regs *regs, __u32 thread_info_flags)
-{
-	/* Pending single-step? */
-	if (thread_info_flags & _TIF_SINGLESTEP)
-		clear_thread_flag(TIF_SINGLESTEP);
-
-	/* deal with pending signal delivery */
-	if (thread_info_flags & _TIF_SIGPENDING)
-		do_signal(regs);
-
-	if (thread_info_flags & _TIF_NOTIFY_RESUME) {
-		clear_thread_flag(TIF_NOTIFY_RESUME);
-		tracehook_notify_resume(regs);
-	}
-}