sh: Move in the SH-5 ptrace impl.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 0 insertions, 274 deletions

diff --git a/arch/sh/kernel/ptrace.c b/arch/sh/kernel/ptrace.c
deleted file mode 100644
index ac725f0aeb72..000000000000
--- a/arch/sh/kernel/ptrace.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- * linux/arch/sh/kernel/ptrace.c
- *
- * Original x86 implementation:
- *	By Ross Biro 1/23/92
- *	edited by Linus Torvalds
- *
- * SuperH version:   Copyright (C) 1999, 2000  Kaz Kojima & Niibe Yutaka
- *
- */
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/slab.h>
-#include <linux/security.h>
-#include <linux/signal.h>
-#include <linux/io.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/processor.h>
-#include <asm/mmu_context.h>
-
-/*
- * does not yet catch signals sent when the child dies.
- * in exit.c or in signal.c.
- */
-
-/*
- * This routine will get a word off of the process kernel stack.
- */
-static inline int get_stack_long(struct task_struct *task, int offset)
-{
-	unsigned char *stack;
-
-	stack = (unsigned char *)task_pt_regs(task);
-	stack += offset;
-	return (*((int *)stack));
-}
-
-/*
- * This routine will put a word on the process kernel stack.
- */
-static inline int put_stack_long(struct task_struct *task, int offset,
-				 unsigned long data)
-{
-	unsigned char *stack;
-
-	stack = (unsigned char *)task_pt_regs(task);
-	stack += offset;
-	*(unsigned long *) stack = data;
-	return 0;
-}
-
-static void ptrace_disable_singlestep(struct task_struct *child)
-{
-	clear_tsk_thread_flag(child, TIF_SINGLESTEP);
-
-	/*
-	 * Ensure the UBC is not programmed at the next context switch.
-	 *
-	 * Normally this is not needed but there are sequences such as
-	 * singlestep, signal delivery, and continue that leave the
-	 * ubc_pc non-zero leading to spurious SIGTRAPs.
-	 */
-	if (child->thread.ubc_pc != 0) {
-		ubc_usercnt -= 1;
-		child->thread.ubc_pc = 0;
-	}
-}
-
-/*
- * Called by kernel/ptrace.c when detaching..
- *
- * Make sure single step bits etc are not set.
- */
-void ptrace_disable(struct task_struct *child)
-{
-	ptrace_disable_singlestep(child);
-}
-
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
-{
-	struct user * dummy = NULL;
-	int ret;
-
-	switch (request) {
-	/* when I and D space are separate, these will need to be fixed. */
-	case PTRACE_PEEKTEXT: /* read word at location addr. */
-	case PTRACE_PEEKDATA:
-		ret = generic_ptrace_peekdata(child, addr, data);
-		break;
-
-	/* read the word at location addr in the USER area. */
-	case PTRACE_PEEKUSR: {
-		unsigned long tmp;
-
-		ret = -EIO;
-		if ((addr & 3) || addr < 0 ||
-		    addr > sizeof(struct user) - 3)
-			break;
-
-		if (addr < sizeof(struct pt_regs))
-			tmp = get_stack_long(child, addr);
-		else if (addr >= (long) &dummy->fpu &&
-			 addr < (long) &dummy->u_fpvalid) {
-			if (!tsk_used_math(child)) {
-				if (addr == (long)&dummy->fpu.fpscr)
-					tmp = FPSCR_INIT;
-				else
-					tmp = 0;
-			} else
-				tmp = ((long *)&child->thread.fpu)
-					[(addr - (long)&dummy->fpu) >> 2];
-		} else if (addr == (long) &dummy->u_fpvalid)
-			tmp = !!tsk_used_math(child);
-		else
-			tmp = 0;
-		ret = put_user(tmp, (unsigned long __user *)data);
-		break;
-	}
-
-	/* when I and D space are separate, this will have to be fixed. */
-	case PTRACE_POKETEXT: /* write the word at location addr. */
-	case PTRACE_POKEDATA:
-		ret = generic_ptrace_pokedata(child, addr, data);
-		break;
-
-	case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
-		ret = -EIO;
-		if ((addr & 3) || addr < 0 ||
-		    addr > sizeof(struct user) - 3)
-			break;
-
-		if (addr < sizeof(struct pt_regs))
-			ret = put_stack_long(child, addr, data);
-		else if (addr >= (long) &dummy->fpu &&
-			 addr < (long) &dummy->u_fpvalid) {
-			set_stopped_child_used_math(child);
-			((long *)&child->thread.fpu)
-				[(addr - (long)&dummy->fpu) >> 2] = data;
-			ret = 0;
-		} else if (addr == (long) &dummy->u_fpvalid) {
-			conditional_stopped_child_used_math(data, child);
-			ret = 0;
-		}
-		break;
-
-	case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
-	case PTRACE_CONT: { /* restart after signal. */
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-		if (request == PTRACE_SYSCALL)
-			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		else
-			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-
-		ptrace_disable_singlestep(child);
-
-		child->exit_code = data;
-		wake_up_process(child);
-		ret = 0;
-		break;
-	}
-
-/*
- * make the child exit.  Best I can do is send it a sigkill.
- * perhaps it should be put in the status that it wants to
- * exit.
- */
-	case PTRACE_KILL: {
-		ret = 0;
-		if (child->exit_state == EXIT_ZOMBIE)	/* already dead */
-			break;
-		ptrace_disable_singlestep(child);
-		child->exit_code = SIGKILL;
-		wake_up_process(child);
-		break;
-	}
-
-	case PTRACE_SINGLESTEP: {  /* set the trap flag. */
-		long pc;
-		struct pt_regs *regs = NULL;
-
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		if ((child->ptrace & PT_DTRACE) == 0) {
-			/* Spurious delayed TF traps may occur */
-			child->ptrace |= PT_DTRACE;
-		}
-
-		pc = get_stack_long(child, (long)&regs->pc);
-
-		/* Next scheduling will set up UBC */
-		if (child->thread.ubc_pc == 0)
-			ubc_usercnt += 1;
-		child->thread.ubc_pc = pc;
-
-		set_tsk_thread_flag(child, TIF_SINGLESTEP);
-		child->exit_code = data;
-		/* give it a chance to run. */
-		wake_up_process(child);
-		ret = 0;
-		break;
-	}
-
-#ifdef CONFIG_SH_DSP
-	case PTRACE_GETDSPREGS: {
-		unsigned long dp;
-
-		ret = -EIO;
-		dp = ((unsigned long) child) + THREAD_SIZE -
-			 sizeof(struct pt_dspregs);
-		if (*((int *) (dp - 4)) == SR_FD) {
-			copy_to_user(addr, (void *) dp,
-				sizeof(struct pt_dspregs));
-			ret = 0;
-		}
-		break;
-	}
-
-	case PTRACE_SETDSPREGS: {
-		unsigned long dp;
-
-		ret = -EIO;
-		dp = ((unsigned long) child) + THREAD_SIZE -
-			 sizeof(struct pt_dspregs);
-		if (*((int *) (dp - 4)) == SR_FD) {
-			copy_from_user((void *) dp, addr,
-				sizeof(struct pt_dspregs));
-			ret = 0;
-		}
-		break;
-	}
-#endif
-	default:
-		ret = ptrace_request(child, request, addr, data);
-		break;
-	}
-
-	return ret;
-}
-
-asmlinkage void do_syscall_trace(void)
-{
-	struct task_struct *tsk = current;
-
-	if (!test_thread_flag(TIF_SYSCALL_TRACE) &&
-	    !test_thread_flag(TIF_SINGLESTEP))
-		return;
-	if (!(tsk->ptrace & PT_PTRACED))
-		return;
-	/* the 0x80 provides a way for the tracing parent to distinguish
-	   between a syscall stop and SIGTRAP delivery */
-	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) &&
-				 !test_thread_flag(TIF_SINGLESTEP) ? 0x80 : 0));
-
-	/*
-	 * this isn't the same as continuing with a signal, but it will do
-	 * for normal use.  strace only continues with a signal if the
-	 * stopping signal is not SIGTRAP.  -brl
-	 */
-	if (tsk->exit_code) {
-		send_sig(tsk->exit_code, tsk, 1);
-		tsk->exit_code = 0;
-	}
-}