powerpc: Move ptrace32.c from arch/ppc64 to arch/powerpc

Also corrected my email address in ptrace.c and updated the comments
at the top of ptrace32.c.
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/kernel/Makefile

@@ -12,7 +12,7 @@ endif
 
 obj-y				:= semaphore.o cputable.o ptrace.o syscalls.o \
 				   signal_32.o
-obj-$(CONFIG_PPC64)		+= binfmt_elf32.o sys_ppc32.o
+obj-$(CONFIG_PPC64)		+= binfmt_elf32.o sys_ppc32.o ptrace32.o
 obj-$(CONFIG_ALTIVEC)		+= vecemu.o vector.o
 obj-$(CONFIG_POWER4)		+= idle_power4.o
 obj-$(CONFIG_PPC_OF)		+= of_device.o

arch/powerpc/kernel/ptrace.c

@@ -8,7 +8,7 @@
  *  linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
  *
  * Modified by Cort Dougan (cort@hq.fsmlabs.com)
- * and Paul Mackerras (paulus@linuxcare.com.au).
+ * and Paul Mackerras (paulus@samba.org).
  *
  * This file is subject to the terms and conditions of the GNU General
  * Public License.  See the file README.legal in the main directory of

arch/ppc64/kernel/ptrace32.c → arch/powerpc/kernel/ptrace32.c

 /*
- *  linux/arch/ppc64/kernel/ptrace32.c
+ * ptrace for 32-bit processes running on a 64-bit kernel.
  *
  *  PowerPC version
  *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
@@ -10,10 +10,10 @@
  *  linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
  *
  * Modified by Cort Dougan (cort@hq.fsmlabs.com)
- * and Paul Mackerras (paulus@linuxcare.com.au).
+ * and Paul Mackerras (paulus@samba.org).
  *
  * This file is subject to the terms and conditions of the GNU General
- * Public License.  See the file README.legal in the main directory of
+ * Public License.  See the file COPYING in the main directory of
  * this archive for more details.
  */
 
@@ -40,7 +40,8 @@
  * in exit.c or in signal.c.
  */
 
-int compat_sys_ptrace(long request, long pid, unsigned long addr, unsigned long data)
+int compat_sys_ptrace(int request, int pid, unsigned long addr,
+		      unsigned long data)
 {
 	struct task_struct *child;
 	int ret = -EPERM;

arch/ppc64/kernel/Makefile

@@ -15,7 +15,7 @@ obj-y               +=	irq.o idle.o dma.o \
 			time.o signal.o \
 			align.o bitops.o pacaData.o \
 			udbg.o ioctl32.o \
-			ptrace32.o rtc.o \
+			rtc.o \
 			cpu_setup_power4.o \
 			iommu.o sysfs.o vdso.o pmc.o firmware.o
 obj-y += vdso32/ vdso64/