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-rw-r--r--arch/cris/arch-v10/kernel/ptrace.c204
1 files changed, 0 insertions, 204 deletions
diff --git a/arch/cris/arch-v10/kernel/ptrace.c b/arch/cris/arch-v10/kernel/ptrace.c
deleted file mode 100644
index b89f57ae096e..000000000000
--- a/arch/cris/arch-v10/kernel/ptrace.c
+++ /dev/null
@@ -1,204 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2000-2003, Axis Communications AB.
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/sched/task_stack.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/signal.h>
-#include <linux/security.h>
-
-#include <linux/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-
-/*
- * Determines which bits in DCCR the user has access to.
- * 1 = access, 0 = no access.
- */
-#define DCCR_MASK 0x0000001f /* XNZVC */
-
-/*
- * Get contents of register REGNO in task TASK.
- */
-inline long get_reg(struct task_struct *task, unsigned int regno)
-{
- /* USP is a special case, it's not in the pt_regs struct but
- * in the tasks thread struct
- */
-
- if (regno == PT_USP)
- return task->thread.usp;
- else if (regno < PT_MAX)
- return ((unsigned long *)task_pt_regs(task))[regno];
- else
- return 0;
-}
-
-/*
- * Write contents of register REGNO in task TASK.
- */
-inline int put_reg(struct task_struct *task, unsigned int regno,
- unsigned long data)
-{
- if (regno == PT_USP)
- task->thread.usp = data;
- else if (regno < PT_MAX)
- ((unsigned long *)task_pt_regs(task))[regno] = data;
- else
- return -1;
- return 0;
-}
-
-/*
- * Called by kernel/ptrace.c when detaching.
- *
- * Make sure the single step bit is not set.
- */
-void
-ptrace_disable(struct task_struct *child)
-{
- /* Todo - pending singlesteps? */
- clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-}
-
-/*
- * Note that this implementation of ptrace behaves differently from vanilla
- * ptrace. Contrary to what the man page says, in the PTRACE_PEEKTEXT,
- * PTRACE_PEEKDATA, and PTRACE_PEEKUSER requests the data variable is not
- * ignored. Instead, the data variable is expected to point at a location
- * (in user space) where the result of the ptrace call is written (instead of
- * being returned).
- */
-long arch_ptrace(struct task_struct *child, long request,
- unsigned long addr, unsigned long data)
-{
- int ret;
- unsigned int regno = addr >> 2;
- unsigned long __user *datap = (unsigned long __user *)data;
-
- switch (request) {
- /* Read word at location address. */
- case PTRACE_PEEKTEXT:
- case PTRACE_PEEKDATA:
- ret = generic_ptrace_peekdata(child, addr, data);
- break;
-
- /* Read the word at location address in the USER area. */
- case PTRACE_PEEKUSR: {
- unsigned long tmp;
-
- ret = -EIO;
- if ((addr & 3) || regno > PT_MAX)
- break;
-
- tmp = get_reg(child, regno);
- ret = put_user(tmp, datap);
- break;
- }
-
- /* Write the word at location address. */
- case PTRACE_POKETEXT:
- case PTRACE_POKEDATA:
- ret = generic_ptrace_pokedata(child, addr, data);
- break;
-
- /* Write the word at location address in the USER area. */
- case PTRACE_POKEUSR:
- ret = -EIO;
- if ((addr & 3) || regno > PT_MAX)
- break;
-
- if (regno == PT_DCCR) {
- /* don't allow the tracing process to change stuff like
- * interrupt enable, kernel/user bit, dma enables etc.
- */
- data &= DCCR_MASK;
- data |= get_reg(child, PT_DCCR) & ~DCCR_MASK;
- }
- if (put_reg(child, regno, data))
- break;
- ret = 0;
- break;
-
- /* Get all GP registers from the child. */
- case PTRACE_GETREGS: {
- int i;
- unsigned long tmp;
-
- ret = 0;
- for (i = 0; i <= PT_MAX; i++) {
- tmp = get_reg(child, i);
-
- if (put_user(tmp, datap)) {
- ret = -EFAULT;
- break;
- }
-
- datap++;
- }
-
- break;
- }
-
- /* Set all GP registers in the child. */
- case PTRACE_SETREGS: {
- int i;
- unsigned long tmp;
-
- ret = 0;
- for (i = 0; i <= PT_MAX; i++) {
- if (get_user(tmp, datap)) {
- ret = -EFAULT;
- break;
- }
-
- if (i == PT_DCCR) {
- tmp &= DCCR_MASK;
- tmp |= get_reg(child, PT_DCCR) & ~DCCR_MASK;
- }
-
- put_reg(child, i, tmp);
- datap++;
- }
-
- break;
- }
-
- default:
- ret = ptrace_request(child, request, addr, data);
- break;
- }
-
- return ret;
-}
-
-void do_syscall_trace(void)
-{
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
-
- if (!(current->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)
- ? 0x80 : 0));
-
- /*
- * This isn't the same as continuing with a signal, but it will do for
- * normal use.
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
-}