On Monday 08 August 2011, Mark Salter wrote:

+ * Perform ptrace request
+ */
+long arch_ptrace(struct task_struct *child, long request,
+		 unsigned long addr, unsigned long data)
+{
+	unsigned long __user *datap = (unsigned long __user *) data;
+	int ret = 0;
+
+	switch (request) {
+	case PTRACE_PEEKUSR:
+		ret = ptrace_read_user(child, addr,
+				       (unsigned long __user *) data);
+		break;
+
+		/*
+		 * write the word at location addr in the user registers.
+		 */
+	case PTRACE_POKEUSR:
+		ret = -EIO;
+		if (addr & 3 || addr < 0 || addr >= PT_REG_SIZE)
+			break;
+
+		ret = put_reg(child, (int)addr >> 2, data);
+		break;

I believe you no longer need to provide PTRACE_PEEKUSR/PTRACE_POKEUSR
when you have regset support for all your GPRs.

	Arnd