[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / powerpc / 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)
 *
 *  Derived from "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
 *
 * Modified by Cort Dougan (cort@hq.fsmlabs.com)
 * and Paul Mackerras (paulus@samba.org).
 *
 * 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/regset.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <linux/compat.h>

#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/system.h>

/*
 * does not yet catch signals sent when the child dies.
 * in exit.c or in signal.c.
 */

/*
 * Here are the old "legacy" powerpc specific getregs/setregs ptrace calls,
 * we mark them as obsolete now, they will be removed in a future version
 */
static long compat_ptrace_old(struct task_struct *child, long request,
			      long addr, long data)
{
	switch (request) {
	case PPC_PTRACE_GETREGS:	/* Get GPRs 0 - 31. */
		return copy_regset_to_user(child,
					   task_user_regset_view(current), 0,
					   0, 32 * sizeof(compat_long_t),
					   compat_ptr(data));

	case PPC_PTRACE_SETREGS:	/* Set GPRs 0 - 31. */
		return copy_regset_from_user(child,
					     task_user_regset_view(current), 0,
					     0, 32 * sizeof(compat_long_t),
					     compat_ptr(data));
	}

	return -EPERM;
}

/* Macros to workout the correct index for the FPR in the thread struct */
#define FPRNUMBER(i) (((i) - PT_FPR0) >> 1)
#define FPRHALF(i) (((i) - PT_FPR0) & 1)
#define FPRINDEX(i) TS_FPRWIDTH * FPRNUMBER(i) * 2 + FPRHALF(i)
#define FPRINDEX_3264(i) (TS_FPRWIDTH * ((i) - PT_FPR0))

long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
			compat_ulong_t caddr, compat_ulong_t cdata)
{
	unsigned long addr = caddr;
	unsigned long data = cdata;
	int ret;

	switch (request) {
	/*
	 * Read 4 bytes of the other process' storage
	 *  data is a pointer specifying where the user wants the
	 *	4 bytes copied into
	 *  addr is a pointer in the user's storage that contains an 8 byte
	 *	address in the other process of the 4 bytes that is to be read
	 * (this is run in a 32-bit process looking at a 64-bit process)
	 * when I and D space are separate, these will need to be fixed.
	 */
	case PPC_PTRACE_PEEKTEXT_3264:
	case PPC_PTRACE_PEEKDATA_3264: {
		u32 tmp;
		int copied;
		u32 __user * addrOthers;

		ret = -EIO;

		/* Get the addr in the other process that we want to read */
		if (get_user(addrOthers, (u32 __user * __user *)addr) != 0)
			break;

		copied = access_process_vm(child, (u64)addrOthers, &tmp,
				sizeof(tmp), 0);
		if (copied != sizeof(tmp))
			break;
		ret = put_user(tmp, (u32 __user *)data);
		break;
	}

	/* Read a register (specified by ADDR) out of the "user area" */
	case PTRACE_PEEKUSR: {
		int index;
		unsigned long tmp;

		ret = -EIO;
		/* convert to index and check */
		index = (unsigned long) addr >> 2;
		if ((addr & 3) || (index > PT_FPSCR32))
			break;

		CHECK_FULL_REGS(child->thread.regs);
		if (index < PT_FPR0) {
			tmp = ptrace_get_reg(child, index);
		} else {
			flush_fp_to_thread(child);
			/*
			 * the user space code considers the floating point
			 * to be an array of unsigned int (32 bits) - the
			 * index passed in is based on this assumption.
			 */
			tmp = ((unsigned int *)child->thread.fpr)
				[FPRINDEX(index)];
		}
		ret = put_user((unsigned int)tmp, (u32 __user *)data);
		break;
	}
  
	/*
	 * Read 4 bytes out of the other process' pt_regs area
	 *  data is a pointer specifying where the user wants the
	 *	4 bytes copied into
	 *  addr is the offset into the other process' pt_regs structure
	 *	that is to be read
	 * (this is run in a 32-bit process looking at a 64-bit process)
	 */
	case PPC_PTRACE_PEEKUSR_3264: {
		u32 index;
		u32 reg32bits;
		u64 tmp;
		u32 numReg;
		u32 part;

		ret = -EIO;
		/* Determine which register the user wants */
		index = (u64)addr >> 2;
		numReg = index / 2;
		/* Determine which part of the register the user wants */
		if (index % 2)
			part = 1;  /* want the 2nd half of the register (right-most). */
		else
			part = 0;  /* want the 1st half of the register (left-most). */

		/* Validate the input - check to see if address is on the wrong boundary
		 * or beyond the end of the user area
		 */
		if ((addr & 3) || numReg > PT_FPSCR)
			break;

		CHECK_FULL_REGS(child->thread.regs);
		if (numReg >= PT_FPR0) {
			flush_fp_to_thread(child);
			/* get 64 bit FPR */
			tmp = ((u64 *)child->thread.fpr)
				[FPRINDEX_3264(numReg)];
		} else { /* register within PT_REGS struct */
			tmp = ptrace_get_reg(child, numReg);
		} 
		reg32bits = ((u32*)&tmp)[part];
		ret = put_user(reg32bits, (u32 __user *)data);
		break;
	}

	/*
	 * Write 4 bytes into the other process' storage
	 *  data is the 4 bytes that the user wants written
	 *  addr is a pointer in the user's storage that contains an
	 *	8 byte address in the other process where the 4 bytes
	 *	that is to be written
	 * (this is run in a 32-bit process looking at a 64-bit process)
	 * when I and D space are separate, these will need to be fixed.
	 */
	case PPC_PTRACE_POKETEXT_3264:
	case PPC_PTRACE_POKEDATA_3264: {
		u32 tmp = data;
		u32 __user * addrOthers;

		/* Get the addr in the other process that we want to write into */
		ret = -EIO;
		if (get_user(addrOthers, (u32 __user * __user *)addr) != 0)
			break;
		ret = 0;
		if (access_process_vm(child, (u64)addrOthers, &tmp,
					sizeof(tmp), 1) == sizeof(tmp))
			break;
		ret = -EIO;
		break;
	}

	/* write the word at location addr in the USER area */
	case PTRACE_POKEUSR: {
		unsigned long index;

		ret = -EIO;
		/* convert to index and check */
		index = (unsigned long) addr >> 2;
		if ((addr & 3) || (index > PT_FPSCR32))
			break;

		CHECK_FULL_REGS(child->thread.regs);
		if (index < PT_FPR0) {
			ret = ptrace_put_reg(child, index, data);
		} else {
			flush_fp_to_thread(child);
			/*
			 * the user space code considers the floating point
			 * to be an array of unsigned int (32 bits) - the
			 * index passed in is based on this assumption.
			 */
			((unsigned int *)child->thread.fpr)
				[FPRINDEX(index)] = data;
			ret = 0;
		}
		break;
	}

	/*
	 * Write 4 bytes into the other process' pt_regs area
	 *  data is the 4 bytes that the user wants written
	 *  addr is the offset into the other process' pt_regs structure
	 *	that is to be written into
	 * (this is run in a 32-bit process looking at a 64-bit process)
	 */
	case PPC_PTRACE_POKEUSR_3264: {
		u32 index;
		u32 numReg;

		ret = -EIO;
		/* Determine which register the user wants */
		index = (u64)addr >> 2;
		numReg = index / 2;

		/*
		 * Validate the input - check to see if address is on the
		 * wrong boundary or beyond the end of the user area
		 */
		if ((addr & 3) || (numReg > PT_FPSCR))
			break;
		CHECK_FULL_REGS(child->thread.regs);
		if (numReg < PT_FPR0) {
			unsigned long freg = ptrace_get_reg(child, numReg);
			if (index % 2)
				freg = (freg & ~0xfffffffful) | (data & 0xfffffffful);
			else
				freg = (freg & 0xfffffffful) | (data << 32);
			ret = ptrace_put_reg(child, numReg, freg);
		} else {
			u64 *tmp;
			flush_fp_to_thread(child);
			/* get 64 bit FPR ... */
			tmp = &(((u64 *)child->thread.fpr)
				[FPRINDEX_3264(numReg)]);
			/* ... write the 32 bit part we want */
			((u32 *)tmp)[index % 2] = data;
			ret = 0;
		}
		break;
	}

	case PTRACE_GET_DEBUGREG: {
		ret = -EINVAL;
		/* We only support one DABR and no IABRS at the moment */
		if (addr > 0)
			break;
#ifdef CONFIG_PPC_ADV_DEBUG_REGS
		ret = put_user(child->thread.dac1, (u32 __user *)data);
#else
		ret = put_user(child->thread.dabr, (u32 __user *)data);
#endif
		break;
	}

	case PTRACE_GETREGS:	/* Get all pt_regs from the child. */
		return copy_regset_to_user(
			child, task_user_regset_view(current), 0,
			0, PT_REGS_COUNT * sizeof(compat_long_t),
			compat_ptr(data));

	case PTRACE_SETREGS:	/* Set all gp regs in the child. */
		return copy_regset_from_user(
			child, task_user_regset_view(current), 0,
			0, PT_REGS_COUNT * sizeof(compat_long_t),
			compat_ptr(data));

	case PTRACE_GETFPREGS:
	case PTRACE_SETFPREGS:
	case PTRACE_GETVRREGS:
	case PTRACE_SETVRREGS:
	case PTRACE_GETVSRREGS:
	case PTRACE_SETVSRREGS:
	case PTRACE_GETREGS64:
	case PTRACE_SETREGS64:
	case PPC_PTRACE_GETFPREGS:
	case PPC_PTRACE_SETFPREGS:
	case PTRACE_KILL:
	case PTRACE_SINGLESTEP:
	case PTRACE_DETACH:
	case PTRACE_SET_DEBUGREG:
	case PTRACE_SYSCALL:
	case PTRACE_CONT:
	case PPC_PTRACE_GETHWDBGINFO:
	case PPC_PTRACE_SETHWDEBUG:
	case PPC_PTRACE_DELHWDEBUG:
		ret = arch_ptrace(child, request, addr, data);
		break;

	/* Old reverse args ptrace callss */
	case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */
	case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */
		ret = compat_ptrace_old(child, request, addr, data);
		break;

	default:
		ret = compat_ptrace_request(child, request, addr, data);
		break;
	}

	return ret;
}
Commit	Line	Data
1da177e4	1	/*
b123923d	2	* ptrace for 32-bit processes running on a 64-bit kernel.
1da177e4 LT	3	*
	4	* PowerPC version
	5	* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
	6	*
	7	* Derived from "arch/m68k/kernel/ptrace.c"
	8	* Copyright (C) 1994 by Hamish Macdonald
	9	* Taken from linux/kernel/ptrace.c and modified for M680x0.
	10	* linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
	11	*
	12	* Modified by Cort Dougan (cort@hq.fsmlabs.com)
b123923d	13	* and Paul Mackerras (paulus@samba.org).
1da177e4 LT	14	*
1da177e4 LT	15	* This file is subject to the terms and conditions of the GNU General
b123923d	16	* Public License. See the file COPYING in the main directory of
1da177e4 LT	17	* this archive for more details.
	18	*/
	19
	20	#include <linux/kernel.h>
	21	#include <linux/sched.h>
	22	#include <linux/mm.h>
	23	#include <linux/smp.h>
1da177e4 LT	24	#include <linux/errno.h>
1da177e4 LT	25	#include <linux/ptrace.h>
0deef2c7	26	#include <linux/regset.h>
1da177e4 LT	27	#include <linux/user.h>
1da177e4 LT	28	#include <linux/security.h>
7ed20e1a	29	#include <linux/signal.h>
1d48d71c	30	#include <linux/compat.h>
1da177e4 LT	31
	32	#include <asm/uaccess.h>
	33	#include <asm/page.h>
	34	#include <asm/pgtable.h>
	35	#include <asm/system.h>
21a62902	36
1da177e4 LT	37	/*
	38	* does not yet catch signals sent when the child dies.
	39	* in exit.c or in signal.c.
	40	*/
	41
e17666ba BH	42	/*
	43	* Here are the old "legacy" powerpc specific getregs/setregs ptrace calls,
	44	* we mark them as obsolete now, they will be removed in a future version
	45	*/
	46	static long compat_ptrace_old(struct task_struct *child, long request,
	47	long addr, long data)
	48	{
0deef2c7 RM	49	switch (request) {
	50	case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */
	51	return copy_regset_to_user(child,
	52	task_user_regset_view(current), 0,
	53	0, 32 * sizeof(compat_long_t),
	54	compat_ptr(data));
	55
	56	case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */
	57	return copy_regset_from_user(child,
	58	task_user_regset_view(current), 0,
	59	0, 32 * sizeof(compat_long_t),
	60	compat_ptr(data));
e17666ba BH	61	}
e17666ba BH	62
0deef2c7	63	return -EPERM;
e17666ba BH	64	}
e17666ba BH	65
9c75a31c MN	66	/* Macros to workout the correct index for the FPR in the thread struct */
	67	#define FPRNUMBER(i) (((i) - PT_FPR0) >> 1)
	68	#define FPRHALF(i) (((i) - PT_FPR0) & 1)
bc826666 MN	69	#define FPRINDEX(i) TS_FPRWIDTH * FPRNUMBER(i) * 2 + FPRHALF(i)
bc826666 MN	70	#define FPRINDEX_3264(i) (TS_FPRWIDTH * ((i) - PT_FPR0))
9c75a31c	71
81e695c0 RM	72	long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
81e695c0 RM	73	compat_ulong_t caddr, compat_ulong_t cdata)
1da177e4	74	{
81e695c0 RM	75	unsigned long addr = caddr;
81e695c0 RM	76	unsigned long data = cdata;
6b9c7ed8	77	int ret;
1da177e4	78
1da177e4	79	switch (request) {
1da177e4 LT	80	/*
	81	* Read 4 bytes of the other process' storage
	82	* data is a pointer specifying where the user wants the
	83	* 4 bytes copied into
	84	* addr is a pointer in the user's storage that contains an 8 byte
	85	* address in the other process of the 4 bytes that is to be read
	86	* (this is run in a 32-bit process looking at a 64-bit process)
	87	* when I and D space are separate, these will need to be fixed.
	88	*/
	89	case PPC_PTRACE_PEEKTEXT_3264:
	90	case PPC_PTRACE_PEEKDATA_3264: {
	91	u32 tmp;
	92	int copied;
	93	u32 __user * addrOthers;
	94
	95	ret = -EIO;
	96
	97	/* Get the addr in the other process that we want to read */
	98	if (get_user(addrOthers, (u32 __user * __user *)addr) != 0)
	99	break;
	100
	101	copied = access_process_vm(child, (u64)addrOthers, &tmp,
	102	sizeof(tmp), 0);
	103	if (copied != sizeof(tmp))
	104	break;
	105	ret = put_user(tmp, (u32 __user *)data);
	106	break;
	107	}
	108
	109	/* Read a register (specified by ADDR) out of the "user area" */
	110	case PTRACE_PEEKUSR: {
	111	int index;
	112	unsigned long tmp;
	113
	114	ret = -EIO;
	115	/* convert to index and check */
	116	index = (unsigned long) addr >> 2;
	117	if ((addr & 3) \|\| (index > PT_FPSCR32))
	118	break;
	119
fabca2c0	120	CHECK_FULL_REGS(child->thread.regs);
1da177e4	121	if (index < PT_FPR0) {
865418d8	122	tmp = ptrace_get_reg(child, index);
1da177e4 LT	123	} else {
	124	flush_fp_to_thread(child);
	125	/*
	126	* the user space code considers the floating point
	127	* to be an array of unsigned int (32 bits) - the
	128	* index passed in is based on this assumption.
	129	*/
9c75a31c MN	130	tmp = ((unsigned int *)child->thread.fpr)
9c75a31c MN	131	[FPRINDEX(index)];
1da177e4 LT	132	}
	133	ret = put_user((unsigned int)tmp, (u32 __user *)data);
	134	break;
	135	}
	136
	137	/*
	138	* Read 4 bytes out of the other process' pt_regs area
	139	* data is a pointer specifying where the user wants the
	140	* 4 bytes copied into
	141	* addr is the offset into the other process' pt_regs structure
	142	* that is to be read
	143	* (this is run in a 32-bit process looking at a 64-bit process)
	144	*/
	145	case PPC_PTRACE_PEEKUSR_3264: {
	146	u32 index;
	147	u32 reg32bits;
	148	u64 tmp;
	149	u32 numReg;
	150	u32 part;
	151
	152	ret = -EIO;
	153	/* Determine which register the user wants */
	154	index = (u64)addr >> 2;
	155	numReg = index / 2;
	156	/* Determine which part of the register the user wants */
	157	if (index % 2)
	158	part = 1; /* want the 2nd half of the register (right-most). */
	159	else
	160	part = 0; /* want the 1st half of the register (left-most). */
	161
912000e7 BH	162	/* Validate the input - check to see if address is on the wrong boundary
	163	* or beyond the end of the user area
	164	*/
1da177e4 LT	165	if ((addr & 3) \|\| numReg > PT_FPSCR)
	166	break;
	167
fabca2c0	168	CHECK_FULL_REGS(child->thread.regs);
1da177e4 LT	169	if (numReg >= PT_FPR0) {
1da177e4 LT	170	flush_fp_to_thread(child);
bc826666 MN	171	/* get 64 bit FPR */
	172	tmp = ((u64 *)child->thread.fpr)
	173	[FPRINDEX_3264(numReg)];
1da177e4	174	} else { /* register within PT_REGS struct */
865418d8	175	tmp = ptrace_get_reg(child, numReg);
1da177e4 LT	176	}
	177	reg32bits = ((u32*)&tmp)[part];
	178	ret = put_user(reg32bits, (u32 __user *)data);
	179	break;
	180	}
	181
1da177e4 LT	182	/*
	183	* Write 4 bytes into the other process' storage
	184	* data is the 4 bytes that the user wants written
	185	* addr is a pointer in the user's storage that contains an
	186	* 8 byte address in the other process where the 4 bytes
	187	* that is to be written
	188	* (this is run in a 32-bit process looking at a 64-bit process)
	189	* when I and D space are separate, these will need to be fixed.
	190	*/
	191	case PPC_PTRACE_POKETEXT_3264:
	192	case PPC_PTRACE_POKEDATA_3264: {
	193	u32 tmp = data;
	194	u32 __user * addrOthers;
	195
	196	/* Get the addr in the other process that we want to write into */
	197	ret = -EIO;
	198	if (get_user(addrOthers, (u32 __user * __user *)addr) != 0)
	199	break;
	200	ret = 0;
	201	if (access_process_vm(child, (u64)addrOthers, &tmp,
	202	sizeof(tmp), 1) == sizeof(tmp))
	203	break;
	204	ret = -EIO;
	205	break;
	206	}
	207
	208	/* write the word at location addr in the USER area */
	209	case PTRACE_POKEUSR: {
	210	unsigned long index;
	211
	212	ret = -EIO;
	213	/* convert to index and check */
	214	index = (unsigned long) addr >> 2;
	215	if ((addr & 3) \|\| (index > PT_FPSCR32))
	216	break;
	217
fabca2c0	218	CHECK_FULL_REGS(child->thread.regs);
1da177e4	219	if (index < PT_FPR0) {
865418d8	220	ret = ptrace_put_reg(child, index, data);
1da177e4 LT	221	} else {
	222	flush_fp_to_thread(child);
	223	/*
	224	* the user space code considers the floating point
	225	* to be an array of unsigned int (32 bits) - the
	226	* index passed in is based on this assumption.
	227	*/
9c75a31c MN	228	((unsigned int *)child->thread.fpr)
9c75a31c MN	229	[FPRINDEX(index)] = data;
1da177e4 LT	230	ret = 0;
	231	}
	232	break;
	233	}
	234
	235	/*
	236	* Write 4 bytes into the other process' pt_regs area
	237	* data is the 4 bytes that the user wants written
	238	* addr is the offset into the other process' pt_regs structure
	239	* that is to be written into
	240	* (this is run in a 32-bit process looking at a 64-bit process)
	241	*/
	242	case PPC_PTRACE_POKEUSR_3264: {
	243	u32 index;
	244	u32 numReg;
	245
	246	ret = -EIO;
	247	/* Determine which register the user wants */
	248	index = (u64)addr >> 2;
	249	numReg = index / 2;
912000e7	250
1da177e4 LT	251	/*
	252	* Validate the input - check to see if address is on the
	253	* wrong boundary or beyond the end of the user area
	254	*/
	255	if ((addr & 3) \|\| (numReg > PT_FPSCR))
	256	break;
fabca2c0	257	CHECK_FULL_REGS(child->thread.regs);
912000e7 BH	258	if (numReg < PT_FPR0) {
	259	unsigned long freg = ptrace_get_reg(child, numReg);
	260	if (index % 2)
	261	freg = (freg & ~0xfffffffful) \| (data & 0xfffffffful);
	262	else
	263	freg = (freg & 0xfffffffful) \| (data << 32);
	264	ret = ptrace_put_reg(child, numReg, freg);
	265	} else {
bc826666	266	u64 *tmp;
1da177e4	267	flush_fp_to_thread(child);
bc826666 MN	268	/* get 64 bit FPR ... */
	269	tmp = &(((u64 *)child->thread.fpr)
	270	[FPRINDEX_3264(numReg)]);
	271	/* ... write the 32 bit part we want */
	272	((u32 *)tmp)[index % 2] = data;
912000e7	273	ret = 0;
1da177e4	274	}
1da177e4 LT	275	break;
	276	}
	277
fd9648df AB	278	case PTRACE_GET_DEBUGREG: {
	279	ret = -EINVAL;
	280	/* We only support one DABR and no IABRS at the moment */
	281	if (addr > 0)
	282	break;
bb2c458b AS	283	#ifdef CONFIG_PPC_ADV_DEBUG_REGS
	284	ret = put_user(child->thread.dac1, (u32 __user *)data);
	285	#else
fd9648df	286	ret = put_user(child->thread.dabr, (u32 __user *)data);
bb2c458b	287	#endif
fd9648df AB	288	break;
	289	}
	290
0deef2c7 RM	291	case PTRACE_GETREGS: /* Get all pt_regs from the child. */
	292	return copy_regset_to_user(
	293	child, task_user_regset_view(current), 0,
	294	0, PT_REGS_COUNT * sizeof(compat_long_t),
	295	compat_ptr(data));
	296
	297	case PTRACE_SETREGS: /* Set all gp regs in the child. */
	298	return copy_regset_from_user(
	299	child, task_user_regset_view(current), 0,
	300	0, PT_REGS_COUNT * sizeof(compat_long_t),
	301	compat_ptr(data));
1da177e4	302
e17666ba BH	303	case PTRACE_GETFPREGS:
e17666ba BH	304	case PTRACE_SETFPREGS:
962bca7f	305	case PTRACE_GETVRREGS:
e17666ba	306	case PTRACE_SETVRREGS:
33b3f03d MN	307	case PTRACE_GETVSRREGS:
33b3f03d MN	308	case PTRACE_SETVSRREGS:
e17666ba BH	309	case PTRACE_GETREGS64:
	310	case PTRACE_SETREGS64:
	311	case PPC_PTRACE_GETFPREGS:
	312	case PPC_PTRACE_SETFPREGS:
	313	case PTRACE_KILL:
	314	case PTRACE_SINGLESTEP:
	315	case PTRACE_DETACH:
	316	case PTRACE_SET_DEBUGREG:
	317	case PTRACE_SYSCALL:
	318	case PTRACE_CONT:
bb2c458b AS	319	case PPC_PTRACE_GETHWDBGINFO:
	320	case PPC_PTRACE_SETHWDEBUG:
	321	case PPC_PTRACE_DELHWDEBUG:
e17666ba	322	ret = arch_ptrace(child, request, addr, data);
962bca7f RJ	323	break;
962bca7f RJ	324
e17666ba BH	325	/* Old reverse args ptrace callss */
	326	case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */
	327	case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */
	328	ret = compat_ptrace_old(child, request, addr, data);
962bca7f	329	break;
962bca7f	330
1da177e4	331	default:
1d48d71c	332	ret = compat_ptrace_request(child, request, addr, data);
1da177e4 LT	333	break;
1da177e4 LT	334	}
81e695c0	335
1da177e4 LT	336	return ret;
1da177e4 LT	337	}