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Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/kernel/ptrace.c')
-rw-r--r--target/linux/ubicom32/files/arch/ubicom32/kernel/ptrace.c275
1 files changed, 0 insertions, 275 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/kernel/ptrace.c b/target/linux/ubicom32/files/arch/ubicom32/kernel/ptrace.c
deleted file mode 100644
index 18bb39e9d9..0000000000
--- a/target/linux/ubicom32/files/arch/ubicom32/kernel/ptrace.c
+++ /dev/null
@@ -1,275 +0,0 @@
-/*
- * arch/ubicom32/kernel/ptrace.c
- * Ubicom32 architecture ptrace implementation.
- *
- * (C) Copyright 2009, Ubicom, Inc.
- * (C) 1994 by Hamish Macdonald
- * Taken from linux/kernel/ptrace.c and modified for M680x0.
- * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
- *
- * This file is part of the Ubicom32 Linux Kernel Port.
- *
- * The Ubicom32 Linux Kernel Port is free software: you can redistribute
- * it and/or modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 2 of the
- * License, or (at your option) any later version.
- *
- * The Ubicom32 Linux Kernel Port is distributed in the hope that it
- * will be useful, but WITHOUT ANY WARRANTY; without even the implied
- * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with the Ubicom32 Linux Kernel Port. If not,
- * see <http://www.gnu.org/licenses/>.
- *
- * Ubicom32 implementation derived from (with many thanks):
- * arch/m68knommu
- * arch/blackfin
- * arch/parisc
- */
-
-#include <linux/module.h>
-#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/signal.h>
-#include <linux/uaccess.h>
-
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/cacheflush.h>
-#include <asm/processor.h>
-
-/*
- * ptrace_getregs()
- *
- * Get all user integer registers.
- */
-static inline int ptrace_getregs(struct task_struct *task, void __user *uregs)
-{
- struct pt_regs *regs = task_pt_regs(task);
- return copy_to_user(uregs, regs, sizeof(struct pt_regs)) ? -EFAULT : 0;
-}
-
-/*
- * ptrace_get_reg()
- *
- * Get contents of register REGNO in task TASK.
- */
-static unsigned long ptrace_get_reg(struct task_struct *task, int regno)
-{
- if (regno < sizeof(struct pt_regs)) {
- struct pt_regs *pt_regs = task_pt_regs(task);
- return *(unsigned long *)((long) pt_regs + regno);
- }
-
- return -EIO;
-}
-
-/*
- * ptrace_put_reg()
- * Write contents of register REGNO in task TASK.
- */
-static int ptrace_put_reg(struct task_struct *task, int regno,
- unsigned long data)
-{
- if (regno <= sizeof(struct pt_regs) && regno != PT_FRAME_TYPE) {
- struct pt_regs *pt_regs = task_pt_regs(task);
- *(unsigned long *)((long) pt_regs + regno) = data;
- return 0;
- }
- return -EIO;
-}
-
-/*
- * ptrace_disable_single_step()
- * Disable Single Step
- */
-static int ptrace_disable_single_step(struct task_struct *task)
-{
- /*
- * Single Step not yet implemented, so must always be disabled
- */
- return 0;
-}
-
-/*
- * ptrace_disable()
- * Make sure the single step bit is not set.
- * Called by kernel/ptrace.c when detaching..
- */
-void ptrace_disable(struct task_struct *child)
-{
- ptrace_disable_single_step(child);
-}
-
-/*
- * arch_ptrace()
- * architecture specific ptrace routine.
- */
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
-{
- 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 (((unsigned long) addr > PT_INTERP_FDPIC_LOADMAP)
- || (addr & 3))
- break;
-
- tmp = 0; /* Default return condition */
-
- ret = -EIO;
- if (addr < sizeof(struct pt_regs)) {
- tmp = ptrace_get_reg(child, addr);
- } else if (addr == PT_TEXT_ADDR) {
- tmp = child->mm->start_code;
- } else if (addr == PT_TEXT_END_ADDR) {
- tmp = child->mm->end_code;
- } else if (addr == PT_DATA_ADDR) {
- tmp = child->mm->start_data;
- } else if (addr == PT_EXEC_FDPIC_LOADMAP) {
-#ifdef CONFIG_BINFMT_ELF_FDPIC
- tmp = child->mm->context.exec_fdpic_loadmap;
-#endif
- } else if (addr == PT_INTERP_FDPIC_LOADMAP) {
-#ifdef CONFIG_BINFMT_ELF_FDPIC
- tmp = child->mm->context.interp_fdpic_loadmap;
-#endif
- } else {
- break;
- }
-
- ret = put_user(tmp, (unsigned long *)data);
- break;
- }
-
- case PTRACE_POKETEXT: /* write the word at location addr. */
- case PTRACE_POKEDATA:
- ret = generic_ptrace_pokedata(child, addr, data);
-
- /*
- * If we just changed some code so we need to
- * correct the caches
- */
- if (request == PTRACE_POKETEXT && ret == 0) {
- flush_icache_range(addr, addr + 4);
- }
- break;
-
- case PTRACE_POKEUSR: /* write the word at location addr
- * in the USER area */
- ret = -EIO;
-
- if (((unsigned long) addr > PT_DATA_ADDR) || (addr & 3))
- break;
-
- if (addr < sizeof(struct pt_regs)) {
- ret = ptrace_put_reg(child, addr, data);
- }
- 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);
- child->exit_code = data;
- /* make sure the single step bit is not set. */
- ptrace_disable_single_step(child);
- 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;
- child->exit_code = SIGKILL;
- /* make sure the single step bit is not set. */
- ptrace_disable_single_step(child);
- wake_up_process(child);
- break;
- }
-
- case PTRACE_DETACH: /* detach a process that was attached. */
- ret = ptrace_detach(child, data);
- break;
-
- case PTRACE_GETREGS: /* Get all gp regs from the child. */
- ptrace_getregs(child, (unsigned long *)data);
- ret = 0;
- break;
-
- case PTRACE_SETREGS: { /* Set all gp regs in the child. */
- int i;
- unsigned long tmp;
- int count = sizeof(struct pt_regs) / sizeof(unsigned long);
- for (i = 0; i < count; i++) {
- if (get_user(tmp, (unsigned long *) data)) {
- ret = -EFAULT;
- break;
- }
- ptrace_put_reg(child, sizeof(unsigned long) * i, tmp);
- data += sizeof(long);
- }
- ret = 0;
- break;
- }
-
- default:
- return ptrace_request(child, request, addr, data);
- break;
- }
- return ret;
-}
-/*
- * syscall_trace
- *
- * called by syscall enter/exit when the TIF_SYSCALL_TRACE bit is set.
- */
-asmlinkage void syscall_trace(void)
-{
- struct task_struct *cur = current;
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
- if (!(cur->ptrace & PT_PTRACED))
- return;
- ptrace_notify(SIGTRAP | ((cur->ptrace & PT_TRACESYSGOOD)
- ? 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 (cur->exit_code) {
- send_sig(cur->exit_code, current, 1);
- current->exit_code = 0;
- }
-}
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