init android origin source code

1 files changed, 168 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/arch/h8300/kernel/ptrace.c b/ANDROID_3.4.5/arch/h8300/kernel/ptrace.c
new file mode 100644
index 00000000..748cf658
--- /dev/null
+++ b/ANDROID_3.4.5/arch/h8300/kernel/ptrace.c
@@ -0,0 +1,168 @@
+/*
+ *  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/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);
+
+
+void user_disable_single_step(struct task_struct *child)
+{
+}
+
+/*
+ * does not yet catch signals sent when the child dies.
+ * in exit.c or in signal.c.
+ */
+
+void ptrace_disable(struct task_struct *child)
+{
+	user_disable_single_step(child);
+}
+
+long arch_ptrace(struct task_struct *child, long request,
+		 unsigned long addr, unsigned long data)
+{
+	int ret;
+	int regno = addr >> 2;
+	unsigned long __user *datap = (unsigned long __user *) data;
+
+	switch (request) {
+	/* read the word at location addr in the USER area. */
+		case PTRACE_PEEKUSR: {
+			unsigned long tmp = 0;
+			
+			if ((addr & 3) || addr >= sizeof(struct user)) {
+				ret = -EIO;
+				break ;
+			}
+			
+		        ret = 0;  /* Default return condition */
+
+			if (regno < H8300_REGS_NO)
+				tmp = h8300_get_reg(child, regno);
+			else {
+				switch (regno) {
+				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, datap);
+			break ;
+		}
+
+      /* when I and D space are separate, this will have to be fixed. */
+		case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
+			if ((addr & 3) || addr >= sizeof(struct user)) {
+				ret = -EIO;
+				break ;
+			}
+			    
+			if (regno == PT_ORIG_ER0) {
+				ret = -EIO;
+				break ;
+			}
+			if (regno < H8300_REGS_NO) {
+				ret = h8300_put_reg(child, regno, data);
+				break ;
+			}
+			ret = -EIO;
+			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, datap)) {
+				ret = -EFAULT;
+				break;
+			    }
+			    datap++;
+			}
+			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, datap)) {
+				ret = -EFAULT;
+				break;
+			    }
+			    h8300_put_reg(child, i, tmp);
+			    datap++;
+			}
+			ret = 0;
+			break;
+		}
+
+		default:
+			ret = ptrace_request(child, request, addr, data);
+			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;
+	}
+}