diff options
Diffstat (limited to 'arch/h8300/kernel/ptrace.c')
| -rw-r--r-- | arch/h8300/kernel/ptrace.c | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c deleted file mode 100644 index d32bbf02fc4..00000000000 --- a/arch/h8300/kernel/ptrace.c +++ /dev/null @@ -1,236 +0,0 @@ -/* - * linux/arch/h8300/kernel/ptrace.c - * - * Yoshinori Sato <ysato@users.sourceforge.jp> - * - * Based on: - * linux/arch/m68k/kernel/ptrace.c - * - * Copyright (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 subject to the terms and conditions of the GNU General - * Public License. See the file COPYING in the main directory of - * this archive for more details. - */ - -#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 <asm/uaccess.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/system.h> -#include <asm/processor.h> -#include <asm/signal.h> - -/* cpu depend functions */ -extern long h8300_get_reg(struct task_struct *task, int regno); -extern int h8300_put_reg(struct task_struct *task, int regno, unsigned long data); -extern void h8300_disable_trace(struct task_struct *child); -extern void h8300_enable_trace(struct task_struct *child); - -/* - * does not yet catch signals sent when the child dies. - * in exit.c or in signal.c. - */ - -inline -static int read_long(struct task_struct * tsk, unsigned long addr, - unsigned long * result) -{ - *result = *(unsigned long *)addr; - return 0; -} - -void ptrace_disable(struct task_struct *child) -{ - h8300_disable_trace(child); -} - -long arch_ptrace(struct task_struct *child, long request, long addr, long data) -{ - int ret; - - switch (request) { - case PTRACE_PEEKTEXT: /* read word at location addr. */ - case PTRACE_PEEKDATA: { - unsigned long tmp; - - ret = read_long(child, addr, &tmp); - if (ret < 0) - break ; - ret = put_user(tmp, (unsigned long *) data); - break ; - } - - /* read the word at location addr in the USER area. */ - case PTRACE_PEEKUSR: { - unsigned long tmp = 0; - - if ((addr & 3) || addr < 0 || addr >= sizeof(struct user)) { - ret = -EIO; - break ; - } - - ret = 0; /* Default return condition */ - addr = addr >> 2; /* temporary hack. */ - - if (addr < H8300_REGS_NO) - tmp = h8300_get_reg(child, addr); - else { - switch(addr) { - case 49: - tmp = child->mm->start_code; - break ; - case 50: - tmp = child->mm->start_data; - break ; - case 51: - tmp = child->mm->end_code; - break ; - case 52: - tmp = child->mm->end_data; - break ; - default: - ret = -EIO; - } - } - if (!ret) - ret = put_user(tmp,(unsigned long *) 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 */ - if ((addr & 3) || addr < 0 || addr >= sizeof(struct user)) { - ret = -EIO; - break ; - } - addr = addr >> 2; /* temporary hack. */ - - if (addr == PT_ORIG_ER0) { - ret = -EIO; - break ; - } - if (addr < H8300_REGS_NO) { - ret = h8300_put_reg(child, addr, data); - break ; - } - ret = -EIO; - 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; - wake_up_process(child); - /* make sure the single step bit is not set. */ - h8300_disable_trace(child); - ret = 0; - } - -/* - * 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; - h8300_disable_trace(child); - wake_up_process(child); - break; - } - - case PTRACE_SINGLESTEP: { /* set the trap flag. */ - ret = -EIO; - if (!valid_signal(data)) - break; - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - h8300_enable_trace(child); - wake_up_process(child); - ret = 0; - 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. */ - int i; - unsigned long tmp; - for (i = 0; i < H8300_REGS_NO; i++) { - tmp = h8300_get_reg(child, i); - if (put_user(tmp, (unsigned long *) data)) { - ret = -EFAULT; - break; - } - data += sizeof(long); - } - ret = 0; - break; - } - - case PTRACE_SETREGS: { /* Set all gp regs in the child. */ - int i; - unsigned long tmp; - for (i = 0; i < H8300_REGS_NO; i++) { - if (get_user(tmp, (unsigned long *) data)) { - ret = -EFAULT; - break; - } - h8300_put_reg(child, i, tmp); - data += sizeof(long); - } - ret = 0; - break; - } - - default: - ret = -EIO; - break; - } - return ret; -} - -asmlinkage void do_syscall_trace(void) -{ - if (!test_thread_flag(TIF_SYSCALL_TRACE)) - return; - if (!(current->ptrace & PT_PTRACED)) - return; - 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. strace only continues with a signal if the - * stopping signal is not SIGTRAP. -brl - */ - if (current->exit_code) { - send_sig(current->exit_code, current, 1); - current->exit_code = 0; - } -} |