23 files changed, 0 insertions, 12297 deletions
diff --git a/arch/ppc/kernel/Makefile b/arch/ppc/kernel/Makefile
deleted file mode 100644
index 7b739054968..00000000000
--- a/arch/ppc/kernel/Makefile
+++ /dev/null
@@ -1,21 +0,0 @@
-#
-# Makefile for the linux kernel.
-#
-extra-$(CONFIG_PPC_STD_MMU)	:= head.o
-extra-$(CONFIG_40x)		:= head_4xx.o
-extra-$(CONFIG_44x)		:= head_44x.o
-extra-$(CONFIG_8xx)		:= head_8xx.o
-extra-y				+= vmlinux.lds
-
-obj-y				:= entry.o traps.o time.o misc.o \
-					setup.o \
-					ppc_htab.o
-obj-$(CONFIG_MODULES)		+= ppc_ksyms.o
-obj-$(CONFIG_PCI)		+= pci.o
-obj-$(CONFIG_KGDB)		+= ppc-stub.o
-obj-$(CONFIG_SMP)		+= smp.o smp-tbsync.o
-obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o
-
-ifndef CONFIG_MATH_EMULATION
-obj-$(CONFIG_8xx)		+= softemu8xx.o
-endif
diff --git a/arch/ppc/kernel/asm-offsets.c b/arch/ppc/kernel/asm-offsets.c
deleted file mode 100644
index 8dcbdd6c2d2..00000000000
--- a/arch/ppc/kernel/asm-offsets.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- * This program is used to generate definitions needed by
- * assembly language modules.
- *
- * We use the technique used in the OSF Mach kernel code:
- * generate asm statements containing #defines,
- * compile this file to assembler, and then extract the
- * #defines from the assembly-language output.
- */
-
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/suspend.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/kbuild.h>
-
-#include <asm/io.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-#include <asm/cputable.h>
-#include <asm/thread_info.h>
-#include <asm/vdso_datapage.h>
-
-int
-main(void)
-{
-	DEFINE(THREAD, offsetof(struct task_struct, thread));
-	DEFINE(THREAD_INFO, offsetof(struct task_struct, stack));
-	DEFINE(MM, offsetof(struct task_struct, mm));
-	DEFINE(PTRACE, offsetof(struct task_struct, ptrace));
-	DEFINE(KSP, offsetof(struct thread_struct, ksp));
-	DEFINE(PGDIR, offsetof(struct thread_struct, pgdir));
-	DEFINE(PT_REGS, offsetof(struct thread_struct, regs));
-	DEFINE(THREAD_FPEXC_MODE, offsetof(struct thread_struct, fpexc_mode));
-	DEFINE(THREAD_FPR0, offsetof(struct thread_struct, fpr[0]));
-	DEFINE(THREAD_FPSCR, offsetof(struct thread_struct, fpscr));
-#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
-	DEFINE(THREAD_DBCR0, offsetof(struct thread_struct, dbcr0));
-	DEFINE(PT_PTRACED, PT_PTRACED);
-#endif
-#ifdef CONFIG_ALTIVEC
-	DEFINE(THREAD_VR0, offsetof(struct thread_struct, vr[0]));
-	DEFINE(THREAD_VRSAVE, offsetof(struct thread_struct, vrsave));
-	DEFINE(THREAD_VSCR, offsetof(struct thread_struct, vscr));
-	DEFINE(THREAD_USED_VR, offsetof(struct thread_struct, used_vr));
-#endif /* CONFIG_ALTIVEC */
-	/* Interrupt register frame */
-	DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);
-	DEFINE(INT_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
-	/* in fact we only use gpr0 - gpr9 and gpr20 - gpr23 */
-	DEFINE(GPR0, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[0]));
-	DEFINE(GPR1, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[1]));
-	DEFINE(GPR2, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[2]));
-	DEFINE(GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[3]));
-	DEFINE(GPR4, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[4]));
-	DEFINE(GPR5, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[5]));
-	DEFINE(GPR6, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[6]));
-	DEFINE(GPR7, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[7]));
-	DEFINE(GPR8, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[8]));
-	DEFINE(GPR9, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[9]));
-	DEFINE(GPR10, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[10]));
-	DEFINE(GPR11, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[11]));
-	DEFINE(GPR12, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[12]));
-	DEFINE(GPR13, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[13]));
-	DEFINE(GPR14, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[14]));
-	DEFINE(GPR15, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[15]));
-	DEFINE(GPR16, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[16]));
-	DEFINE(GPR17, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[17]));
-	DEFINE(GPR18, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[18]));
-	DEFINE(GPR19, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[19]));
-	DEFINE(GPR20, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[20]));
-	DEFINE(GPR21, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[21]));
-	DEFINE(GPR22, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[22]));
-	DEFINE(GPR23, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[23]));
-	DEFINE(GPR24, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[24]));
-	DEFINE(GPR25, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[25]));
-	DEFINE(GPR26, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[26]));
-	DEFINE(GPR27, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[27]));
-	DEFINE(GPR28, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[28]));
-	DEFINE(GPR29, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[29]));
-	DEFINE(GPR30, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[30]));
-	DEFINE(GPR31, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[31]));
-	/* Note: these symbols include _ because they overlap with special
-	 * register names
-	 */
-	DEFINE(_NIP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, nip));
-	DEFINE(_MSR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, msr));
-	DEFINE(_CTR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ctr));
-	DEFINE(_LINK, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, link));
-	DEFINE(_CCR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ccr));
-	DEFINE(_MQ, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, mq));
-	DEFINE(_XER, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, xer));
-	DEFINE(_DAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
-	DEFINE(_DSISR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
-	/* The PowerPC 400-class & Book-E processors have neither the DAR nor the DSISR
-	 * SPRs. Hence, we overload them to hold the similar DEAR and ESR SPRs
-	 * for such processors.  For critical interrupts we use them to
-	 * hold SRR0 and SRR1.
-	 */
-	DEFINE(_DEAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
-	DEFINE(_ESR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
-	DEFINE(ORIG_GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, orig_gpr3));
-	DEFINE(RESULT, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, result));
-	DEFINE(TRAP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, trap));
-	DEFINE(CLONE_VM, CLONE_VM);
-	DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);
-	DEFINE(MM_PGD, offsetof(struct mm_struct, pgd));
-
-	/* About the CPU features table */
-	DEFINE(CPU_SPEC_ENTRY_SIZE, sizeof(struct cpu_spec));
-	DEFINE(CPU_SPEC_PVR_MASK, offsetof(struct cpu_spec, pvr_mask));
-	DEFINE(CPU_SPEC_PVR_VALUE, offsetof(struct cpu_spec, pvr_value));
-	DEFINE(CPU_SPEC_FEATURES, offsetof(struct cpu_spec, cpu_features));
-	DEFINE(CPU_SPEC_SETUP, offsetof(struct cpu_spec, cpu_setup));
-
-	DEFINE(TI_TASK, offsetof(struct thread_info, task));
-	DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain));
-	DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
-	DEFINE(TI_LOCAL_FLAGS, offsetof(struct thread_info, local_flags));
-	DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
-	DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
-
-	DEFINE(pbe_address, offsetof(struct pbe, address));
-	DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
-	DEFINE(pbe_next, offsetof(struct pbe, next));
-
-	DEFINE(TASK_SIZE, TASK_SIZE);
-	DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28);
-
-	/* datapage offsets for use by vdso */
-	DEFINE(CFG_TB_ORIG_STAMP, offsetof(struct vdso_data, tb_orig_stamp));
-	DEFINE(CFG_TB_TICKS_PER_SEC, offsetof(struct vdso_data, tb_ticks_per_sec));
-	DEFINE(CFG_TB_TO_XS, offsetof(struct vdso_data, tb_to_xs));
-	DEFINE(CFG_STAMP_XSEC, offsetof(struct vdso_data, stamp_xsec));
-	DEFINE(CFG_TB_UPDATE_COUNT, offsetof(struct vdso_data, tb_update_count));
-	DEFINE(CFG_TZ_MINUTEWEST, offsetof(struct vdso_data, tz_minuteswest));
-	DEFINE(CFG_TZ_DSTTIME, offsetof(struct vdso_data, tz_dsttime));
-	DEFINE(CFG_SYSCALL_MAP32, offsetof(struct vdso_data, syscall_map_32));
-	DEFINE(WTOM_CLOCK_SEC, offsetof(struct vdso_data, wtom_clock_sec));
-	DEFINE(WTOM_CLOCK_NSEC, offsetof(struct vdso_data, wtom_clock_nsec));
-	DEFINE(TVAL32_TV_SEC, offsetof(struct timeval, tv_sec));
-	DEFINE(TVAL32_TV_USEC, offsetof(struct timeval, tv_usec));
-	DEFINE(TSPEC32_TV_SEC, offsetof(struct timespec, tv_sec));
-	DEFINE(TSPEC32_TV_NSEC, offsetof(struct timespec, tv_nsec));
-
-	/* timeval/timezone offsets for use by vdso */
-	DEFINE(TZONE_TZ_MINWEST, offsetof(struct timezone, tz_minuteswest));
-	DEFINE(TZONE_TZ_DSTTIME, offsetof(struct timezone, tz_dsttime));
-
-	/* Other bits used by the vdso */
-	DEFINE(CLOCK_REALTIME, CLOCK_REALTIME);
-	DEFINE(CLOCK_MONOTONIC, CLOCK_MONOTONIC);
-	DEFINE(NSEC_PER_SEC, NSEC_PER_SEC);
-	DEFINE(CLOCK_REALTIME_RES, TICK_NSEC);
-
-	return 0;
-}
diff --git a/arch/ppc/kernel/cpu_setup_power4.S b/arch/ppc/kernel/cpu_setup_power4.S
deleted file mode 100644
index 6a674e834ee..00000000000
--- a/arch/ppc/kernel/cpu_setup_power4.S
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- * This file contains low level CPU setup functions.
- *    Copyright (C) 2003 Benjamin Herrenschmidt (benh@kernel.crashing.org)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/ppc_asm.h>
-#include <asm/cputable.h>
-#include <asm/asm-offsets.h>
-#include <asm/cache.h>
-
-_GLOBAL(__970_cpu_preinit)
-	/*
-	 * Deal only with PPC970 and PPC970FX.
-	 */
-	mfspr	r0,SPRN_PVR
-	srwi	r0,r0,16
-	cmpwi	cr0,r0,0x39
-	cmpwi	cr1,r0,0x3c
-	cror	4*cr0+eq,4*cr0+eq,4*cr1+eq
-	bnelr
-
-	/* Make sure HID4:rm_ci is off before MMU is turned off, that large
-	 * pages are enabled with HID4:61 and clear HID5:DCBZ_size and
-	 * HID5:DCBZ32_ill
-	 */
-	li	r0,0
-	mfspr	r11,SPRN_HID4
-	rldimi	r11,r0,40,23	/* clear bit 23 (rm_ci) */
-	rldimi	r11,r0,2,61	/* clear bit 61 (lg_pg_en) */
-	sync
-	mtspr	SPRN_HID4,r11
-	isync
-	sync
-	mfspr	r11,SPRN_HID5
-	rldimi	r11,r0,6,56	/* clear bits 56 & 57 (DCBZ*) */
-	sync
-	mtspr	SPRN_HID5,r11
-	isync
-	sync
-
-	/* Setup some basic HID1 features */
-	mfspr	r0,SPRN_HID1
-	li	r11,0x1200		/* enable i-fetch cacheability */
-	sldi	r11,r11,44		/* and prefetch */
-	or	r0,r0,r11
-	mtspr	SPRN_HID1,r0
-	mtspr	SPRN_HID1,r0
-	isync
-
-	/* Clear HIOR */
-	li	r0,0
-	sync
-	mtspr	SPRN_HIOR,0		/* Clear interrupt prefix */
-	isync
-	blr
-
-_GLOBAL(__setup_cpu_ppc970)
-	mfspr	r0,SPRN_HID0
-	li	r11,5			/* clear DOZE and SLEEP */
-	rldimi	r0,r11,52,8		/* set NAP and DPM */
-	mtspr	SPRN_HID0,r0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	mfspr	r0,SPRN_HID0
-	sync
-	isync
-	blr
-
-/* Definitions for the table use to save CPU states */
-#define CS_HID0		0
-#define CS_HID1		8
-#define	CS_HID4		16
-#define CS_HID5		24
-#define CS_SIZE		32
-
-	.data
-	.balign	L1_CACHE_BYTES
-cpu_state_storage:	
-	.space	CS_SIZE
-	.balign	L1_CACHE_BYTES,0
-	.text
-	
-/* Called in normal context to backup CPU 0 state. This
- * does not include cache settings. This function is also
- * called for machine sleep. This does not include the MMU
- * setup, BATs, etc... but rather the "special" registers
- * like HID0, HID1, HID4, etc...
- */
-_GLOBAL(__save_cpu_setup)
-	/* Some CR fields are volatile, we back it up all */
-	mfcr	r7
-
-	/* Get storage ptr */
-	lis	r5,cpu_state_storage@h
-	ori	r5,r5,cpu_state_storage@l
-
-	/* We only deal with 970 for now */
-	mfspr	r0,SPRN_PVR
-	srwi	r0,r0,16
-	cmpwi	cr0,r0,0x39
-	cmpwi	cr1,r0,0x3c
-	cror	4*cr0+eq,4*cr0+eq,4*cr1+eq
-	bne	1f
-
-	/* Save HID0,1,4 and 5 */
-	mfspr	r3,SPRN_HID0
-	std	r3,CS_HID0(r5)
-	mfspr	r3,SPRN_HID1
-	std	r3,CS_HID1(r5)
-	mfspr	r3,SPRN_HID4
-	std	r3,CS_HID4(r5)
-	mfspr	r3,SPRN_HID5
-	std	r3,CS_HID5(r5)
-	
-1:
-	mtcr	r7
-	blr
-
-/* Called with no MMU context (typically MSR:IR/DR off) to
- * restore CPU state as backed up by the previous
- * function. This does not include cache setting
- */
-_GLOBAL(__restore_cpu_setup)
-	/* Some CR fields are volatile, we back it up all */
-	mfcr	r7
-
-	/* Get storage ptr */
-	lis	r5,(cpu_state_storage-KERNELBASE)@h
-	ori	r5,r5,cpu_state_storage@l
-
-	/* We only deal with 970 for now */
-	mfspr	r0,SPRN_PVR
-	srwi	r0,r0,16
-	cmpwi	cr0,r0,0x39
-	cmpwi	cr1,r0,0x3c
-	cror	4*cr0+eq,4*cr0+eq,4*cr1+eq
-	bne	1f
-
-	/* Clear interrupt prefix */
-	li	r0,0
-	sync
-	mtspr	SPRN_HIOR,0
-	isync
-
-	/* Restore HID0 */
-	ld	r3,CS_HID0(r5)
-	sync
-	isync
-	mtspr	SPRN_HID0,r3
-	mfspr	r3,SPRN_HID0
-	mfspr	r3,SPRN_HID0
-	mfspr	r3,SPRN_HID0
-	mfspr	r3,SPRN_HID0
-	mfspr	r3,SPRN_HID0
-	mfspr	r3,SPRN_HID0
-	sync
-	isync
-
-	/* Restore HID1 */
-	ld	r3,CS_HID1(r5)
-	sync
-	isync
-	mtspr	SPRN_HID1,r3
-	mtspr	SPRN_HID1,r3
-	sync
-	isync
-	
-	/* Restore HID4 */
-	ld	r3,CS_HID4(r5)
-	sync
-	isync
-	mtspr	SPRN_HID4,r3
-	sync
-	isync
-
-	/* Restore HID5 */
-	ld	r3,CS_HID5(r5)
-	sync
-	isync
-	mtspr	SPRN_HID5,r3
-	sync
-	isync
-1:
-	mtcr	r7
-	blr
-
diff --git a/arch/ppc/kernel/entry.S b/arch/ppc/kernel/entry.S
deleted file mode 100644
index fcd830a292e..00000000000
--- a/arch/ppc/kernel/entry.S
+++ /dev/null
@@ -1,960 +0,0 @@
-/*
- *  PowerPC version
- *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *  Rewritten by Cort Dougan (cort@fsmlabs.com) for PReP
- *    Copyright (C) 1996 Cort Dougan <cort@fsmlabs.com>
- *  Adapted for Power Macintosh by Paul Mackerras.
- *  Low-level exception handlers and MMU support
- *  rewritten by Paul Mackerras.
- *    Copyright (C) 1996 Paul Mackerras.
- *  MPC8xx modifications Copyright (C) 1997 Dan Malek (dmalek@jlc.net).
- *
- *  This file contains the system call entry code, context switch
- *  code, and exception/interrupt return code for PowerPC.
- *
- *  This program is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU General Public License
- *  as published by the Free Software Foundation; either version
- *  2 of the License, or (at your option) any later version.
- *
- */
-
-#include <linux/errno.h>
-#include <linux/sys.h>
-#include <linux/threads.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/mmu.h>
-#include <asm/cputable.h>
-#include <asm/thread_info.h>
-#include <asm/ppc_asm.h>
-#include <asm/asm-offsets.h>
-#include <asm/unistd.h>
-
-#undef SHOW_SYSCALLS
-#undef SHOW_SYSCALLS_TASK
-
-/*
- * MSR_KERNEL is > 0x10000 on 4xx/Book-E since it include MSR_CE.
- */
-#if MSR_KERNEL >= 0x10000
-#define LOAD_MSR_KERNEL(r, x)	lis r,(x)@h; ori r,r,(x)@l
-#else
-#define LOAD_MSR_KERNEL(r, x)	li r,(x)
-#endif
-
-#ifdef CONFIG_BOOKE
-#include "head_booke.h"
-#define TRANSFER_TO_HANDLER_EXC_LEVEL(exc_level)	\
-	mtspr	exc_level##_SPRG,r8;			\
-	BOOKE_LOAD_EXC_LEVEL_STACK(exc_level);		\
-	lwz	r0,GPR10-INT_FRAME_SIZE(r8);		\
-	stw	r0,GPR10(r11);				\
-	lwz	r0,GPR11-INT_FRAME_SIZE(r8);		\
-	stw	r0,GPR11(r11);				\
-	mfspr	r8,exc_level##_SPRG
-
-	.globl	mcheck_transfer_to_handler
-mcheck_transfer_to_handler:
-	TRANSFER_TO_HANDLER_EXC_LEVEL(MCHECK)
-	b	transfer_to_handler_full
-
-	.globl	debug_transfer_to_handler
-debug_transfer_to_handler:
-	TRANSFER_TO_HANDLER_EXC_LEVEL(DEBUG)
-	b	transfer_to_handler_full
-
-	.globl	crit_transfer_to_handler
-crit_transfer_to_handler:
-	TRANSFER_TO_HANDLER_EXC_LEVEL(CRIT)
-	/* fall through */
-#endif
-
-#ifdef CONFIG_40x
-	.globl	crit_transfer_to_handler
-crit_transfer_to_handler:
-	lwz	r0,crit_r10@l(0)
-	stw	r0,GPR10(r11)
-	lwz	r0,crit_r11@l(0)
-	stw	r0,GPR11(r11)
-	/* fall through */
-#endif
-
-/*
- * This code finishes saving the registers to the exception frame
- * and jumps to the appropriate handler for the exception, turning
- * on address translation.
- * Note that we rely on the caller having set cr0.eq iff the exception
- * occurred in kernel mode (i.e. MSR:PR = 0).
- */
-	.globl	transfer_to_handler_full
-transfer_to_handler_full:
-	SAVE_NVGPRS(r11)
-	/* fall through */
-
-	.globl	transfer_to_handler
-transfer_to_handler:
-	stw	r2,GPR2(r11)
-	stw	r12,_NIP(r11)
-	stw	r9,_MSR(r11)
-	andi.	r2,r9,MSR_PR
-	mfctr	r12
-	mfspr	r2,SPRN_XER
-	stw	r12,_CTR(r11)
-	stw	r2,_XER(r11)
-	mfspr	r12,SPRN_SPRG3
-	addi	r2,r12,-THREAD
-	tovirt(r2,r2)			/* set r2 to current */
-	beq	2f			/* if from user, fix up THREAD.regs */
-	addi	r11,r1,STACK_FRAME_OVERHEAD
-	stw	r11,PT_REGS(r12)
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
-	/* Check to see if the dbcr0 register is set up to debug.  Use the
-	   single-step bit to do this. */
-	lwz	r12,THREAD_DBCR0(r12)
-	andis.	r12,r12,DBCR0_IC@h
-	beq+	3f
-	/* From user and task is ptraced - load up global dbcr0 */
-	li	r12,-1			/* clear all pending debug events */
-	mtspr	SPRN_DBSR,r12
-	lis	r11,global_dbcr0@ha
-	tophys(r11,r11)
-	addi	r11,r11,global_dbcr0@l
-	lwz	r12,0(r11)
-	mtspr	SPRN_DBCR0,r12
-	lwz	r12,4(r11)
-	addi	r12,r12,-1
-	stw	r12,4(r11)
-#endif
-	b	3f
-
-2:	/* if from kernel, check interrupted DOZE/NAP mode and
-         * check for stack overflow
-         */
-	lwz	r9,THREAD_INFO-THREAD(r12)
-	cmplw	r1,r9			/* if r1 <= current->thread_info */
-	ble-	stack_ovf		/* then the kernel stack overflowed */
-5:
-#ifdef CONFIG_6xx
-	tophys(r9,r9)			/* check local flags */
-	lwz	r12,TI_LOCAL_FLAGS(r9)
-	mtcrf	0x01,r12
-	bt-	31-TLF_NAPPING,4f
-#endif /* CONFIG_6xx */
-	.globl transfer_to_handler_cont
-transfer_to_handler_cont:
-3:
-	mflr	r9
-	lwz	r11,0(r9)		/* virtual address of handler */
-	lwz	r9,4(r9)		/* where to go when done */
-	mtspr	SPRN_SRR0,r11
-	mtspr	SPRN_SRR1,r10
-	mtlr	r9
-	SYNC
-	RFI				/* jump to handler, enable MMU */
-
-#ifdef CONFIG_6xx
-4:	rlwinm	r12,r12,0,~_TLF_NAPPING
-	stw	r12,TI_LOCAL_FLAGS(r9)
-	b	power_save_6xx_restore
-#endif
-
-/*
- * On kernel stack overflow, load up an initial stack pointer
- * and call StackOverflow(regs), which should not return.
- */
-stack_ovf:
-	/* sometimes we use a statically-allocated stack, which is OK. */
-	lis	r12,_end@h
-	ori	r12,r12,_end@l
-	cmplw	r1,r12
-	ble	5b			/* r1 <= &_end is OK */
-	SAVE_NVGPRS(r11)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	lis	r1,init_thread_union@ha
-	addi	r1,r1,init_thread_union@l
-	addi	r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD
-	lis	r9,StackOverflow@ha
-	addi	r9,r9,StackOverflow@l
-	LOAD_MSR_KERNEL(r10,MSR_KERNEL)
-	FIX_SRR1(r10,r12)
-	mtspr	SPRN_SRR0,r9
-	mtspr	SPRN_SRR1,r10
-	SYNC
-	RFI
-
-/*
- * Handle a system call.
- */
-	.stabs	"arch/ppc/kernel/",N_SO,0,0,0f
-	.stabs	"entry.S",N_SO,0,0,0f
-0:
-
-_GLOBAL(DoSyscall)
-	stw	r3,ORIG_GPR3(r1)
-	li	r12,0
-	stw	r12,RESULT(r1)
-	lwz	r11,_CCR(r1)	/* Clear SO bit in CR */
-	rlwinm	r11,r11,0,4,2
-	stw	r11,_CCR(r1)
-#ifdef SHOW_SYSCALLS
-	bl	do_show_syscall
-#endif /* SHOW_SYSCALLS */
-	rlwinm	r10,r1,0,0,18	/* current_thread_info() */
-	lwz	r11,TI_FLAGS(r10)
-	andi.	r11,r11,_TIF_SYSCALL_T_OR_A
-	bne-	syscall_dotrace
-syscall_dotrace_cont:
-	cmplwi	0,r0,NR_syscalls
-	lis	r10,sys_call_table@h
-	ori	r10,r10,sys_call_table@l
-	slwi	r0,r0,2
-	bge-	66f
-	lwzx	r10,r10,r0	/* Fetch system call handler [ptr] */
-	mtlr	r10
-	addi	r9,r1,STACK_FRAME_OVERHEAD
-	PPC440EP_ERR42
-	blrl			/* Call handler */
-	.globl	ret_from_syscall
-ret_from_syscall:
-#ifdef SHOW_SYSCALLS
-	bl	do_show_syscall_exit
-#endif
-	mr	r6,r3
-	rlwinm	r12,r1,0,0,18	/* current_thread_info() */
-	/* disable interrupts so current_thread_info()->flags can't change */
-	LOAD_MSR_KERNEL(r10,MSR_KERNEL)	/* doesn't include MSR_EE */
-	SYNC
-	MTMSRD(r10)
-	lwz	r9,TI_FLAGS(r12)
-	li	r8,-_LAST_ERRNO
-	andi.	r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK)
-	bne-	syscall_exit_work
-	cmplw	0,r3,r8
-	blt+	syscall_exit_cont
-	lwz	r11,_CCR(r1)			/* Load CR */
-	neg	r3,r3
-	oris	r11,r11,0x1000	/* Set SO bit in CR */
-	stw	r11,_CCR(r1)
-syscall_exit_cont:
-#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
-	/* If the process has its own DBCR0 value, load it up.  The single
-	   step bit tells us that dbcr0 should be loaded. */
-	lwz	r0,THREAD+THREAD_DBCR0(r2)
-	andis.	r10,r0,DBCR0_IC@h
-	bnel-	load_dbcr0
-#endif
-#ifdef CONFIG_44x
-	lis	r4,icache_44x_need_flush@ha
-	lwz	r5,icache_44x_need_flush@l(r4)
-	cmplwi	cr0,r5,0
-	bne-	2f
-1:
-#endif /* CONFIG_44x */
-BEGIN_FTR_SECTION
-	lwarx	r7,0,r1
-END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX)
-	stwcx.	r0,0,r1			/* to clear the reservation */
-	lwz	r4,_LINK(r1)
-	lwz	r5,_CCR(r1)
-	mtlr	r4
-	mtcr	r5
-	lwz	r7,_NIP(r1)
-	lwz	r8,_MSR(r1)
-	FIX_SRR1(r8, r0)
-	lwz	r2,GPR2(r1)
-	lwz	r1,GPR1(r1)
-	mtspr	SPRN_SRR0,r7
-	mtspr	SPRN_SRR1,r8
-	SYNC
-	RFI
-#ifdef CONFIG_44x
-2:	li	r7,0
-	iccci	r0,r0
-	stw	r7,icache_44x_need_flush@l(r4)
-	b	1b
-#endif  /* CONFIG_44x */
-
-66:	li	r3,-ENOSYS
-	b	ret_from_syscall
-
-	.globl	ret_from_fork
-ret_from_fork:
-	REST_NVGPRS(r1)
-	bl	schedule_tail
-	li	r3,0
-	b	ret_from_syscall
-
-/* Traced system call support */
-syscall_dotrace:
-	SAVE_NVGPRS(r1)
-	li	r0,0xc00
-	stw	r0,TRAP(r1)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	do_syscall_trace_enter
-	lwz	r0,GPR0(r1)	/* Restore original registers */
-	lwz	r3,GPR3(r1)
-	lwz	r4,GPR4(r1)
-	lwz	r5,GPR5(r1)
-	lwz	r6,GPR6(r1)
-	lwz	r7,GPR7(r1)
-	lwz	r8,GPR8(r1)
-	REST_NVGPRS(r1)
-	b	syscall_dotrace_cont
-
-syscall_exit_work:
-	andi.	r0,r9,_TIF_RESTOREALL
-	beq+	0f
-	REST_NVGPRS(r1)
-	b	2f
-0:	cmplw	0,r3,r8
-	blt+	1f
-	andi.	r0,r9,_TIF_NOERROR
-	bne-	1f
-	lwz	r11,_CCR(r1)			/* Load CR */
-	neg	r3,r3
-	oris	r11,r11,0x1000	/* Set SO bit in CR */
-	stw	r11,_CCR(r1)
-
-1:	stw	r6,RESULT(r1)	/* Save result */
-	stw	r3,GPR3(r1)	/* Update return value */
-2:	andi.	r0,r9,(_TIF_PERSYSCALL_MASK)
-	beq	4f
-
-	/* Clear per-syscall TIF flags if any are set.  */
-
-	li	r11,_TIF_PERSYSCALL_MASK
-	addi	r12,r12,TI_FLAGS
-3:	lwarx	r8,0,r12
-	andc	r8,r8,r11
-#ifdef CONFIG_IBM405_ERR77
-	dcbt	0,r12
-#endif
-	stwcx.	r8,0,r12
-	bne-	3b
-	subi	r12,r12,TI_FLAGS
-	
-4:	/* Anything which requires enabling interrupts? */
-	andi.	r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
-	beq	ret_from_except
-
-	/* Re-enable interrupts */
-	ori	r10,r10,MSR_EE
-	SYNC
-	MTMSRD(r10)
-
-	/* Save NVGPRS if they're not saved already */
-	lwz	r4,TRAP(r1)
-	andi.	r4,r4,1
-	beq	5f
-	SAVE_NVGPRS(r1)
-	li	r4,0xc00
-	stw	r4,TRAP(r1)
-5:
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	do_syscall_trace_leave
-	b	ret_from_except_full
-
-#ifdef SHOW_SYSCALLS
-do_show_syscall:
-#ifdef SHOW_SYSCALLS_TASK
-	lis	r11,show_syscalls_task@ha
-	lwz	r11,show_syscalls_task@l(r11)
-	cmp	0,r2,r11
-	bnelr
-#endif
-	stw	r31,GPR31(r1)
-	mflr	r31
-	lis	r3,7f@ha
-	addi	r3,r3,7f@l
-	lwz	r4,GPR0(r1)
-	lwz	r5,GPR3(r1)
-	lwz	r6,GPR4(r1)
-	lwz	r7,GPR5(r1)
-	lwz	r8,GPR6(r1)
-	lwz	r9,GPR7(r1)
-	bl	printk
-	lis	r3,77f@ha
-	addi	r3,r3,77f@l
-	lwz	r4,GPR8(r1)
-	mr	r5,r2
-	bl	printk
-	lwz	r0,GPR0(r1)
-	lwz	r3,GPR3(r1)
-	lwz	r4,GPR4(r1)
-	lwz	r5,GPR5(r1)
-	lwz	r6,GPR6(r1)
-	lwz	r7,GPR7(r1)
-	lwz	r8,GPR8(r1)
-	mtlr	r31
-	lwz	r31,GPR31(r1)
-	blr
-
-do_show_syscall_exit:
-#ifdef SHOW_SYSCALLS_TASK
-	lis	r11,show_syscalls_task@ha
-	lwz	r11,show_syscalls_task@l(r11)
-	cmp	0,r2,r11
-	bnelr
-#endif
-	stw	r31,GPR31(r1)
-	mflr	r31
-	stw	r3,RESULT(r1)	/* Save result */
-	mr	r4,r3
-	lis	r3,79f@ha
-	addi	r3,r3,79f@l
-	bl	printk
-	lwz	r3,RESULT(r1)
-	mtlr	r31
-	lwz	r31,GPR31(r1)
-	blr
-
-7:	.string	"syscall %d(%x, %x, %x, %x, %x, "
-77:	.string	"%x), current=%p\n"
-79:	.string	" -> %x\n"
-	.align	2,0
-
-#ifdef SHOW_SYSCALLS_TASK
-	.data
-	.globl	show_syscalls_task
-show_syscalls_task:
-	.long	-1
-	.text
-#endif
-#endif /* SHOW_SYSCALLS */
-
-/*
- * The fork/clone functions need to copy the full register set into
- * the child process. Therefore we need to save all the nonvolatile
- * registers (r13 - r31) before calling the C code.
- */
-	.globl	ppc_fork
-ppc_fork:
-	SAVE_NVGPRS(r1)
-	lwz	r0,TRAP(r1)
-	rlwinm	r0,r0,0,0,30		/* clear LSB to indicate full */
-	stw	r0,TRAP(r1)		/* register set saved */
-	b	sys_fork
-
-	.globl	ppc_vfork
-ppc_vfork:
-	SAVE_NVGPRS(r1)
-	lwz	r0,TRAP(r1)
-	rlwinm	r0,r0,0,0,30		/* clear LSB to indicate full */
-	stw	r0,TRAP(r1)		/* register set saved */
-	b	sys_vfork
-
-	.globl	ppc_clone
-ppc_clone:
-	SAVE_NVGPRS(r1)
-	lwz	r0,TRAP(r1)
-	rlwinm	r0,r0,0,0,30		/* clear LSB to indicate full */
-	stw	r0,TRAP(r1)		/* register set saved */
-	b	sys_clone
-
-	.globl	ppc_swapcontext
-ppc_swapcontext:
-	SAVE_NVGPRS(r1)
-	lwz	r0,TRAP(r1)
-	rlwinm	r0,r0,0,0,30		/* clear LSB to indicate full */
-	stw	r0,TRAP(r1)		/* register set saved */
-	b	sys_swapcontext
-
-/*
- * Top-level page fault handling.
- * This is in assembler because if do_page_fault tells us that
- * it is a bad kernel page fault, we want to save the non-volatile
- * registers before calling bad_page_fault.
- */
-	.globl	handle_page_fault
-handle_page_fault:
-	stw	r4,_DAR(r1)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	do_page_fault
-	cmpwi	r3,0
-	beq+	ret_from_except
-	SAVE_NVGPRS(r1)
-	lwz	r0,TRAP(r1)
-	clrrwi	r0,r0,1
-	stw	r0,TRAP(r1)
-	mr	r5,r3
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	lwz	r4,_DAR(r1)
-	bl	bad_page_fault
-	b	ret_from_except_full
-
-/*
- * This routine switches between two different tasks.  The process
- * state of one is saved on its kernel stack.  Then the state
- * of the other is restored from its kernel stack.  The memory
- * management hardware is updated to the second process's state.
- * Finally, we can return to the second process.
- * On entry, r3 points to the THREAD for the current task, r4
- * points to the THREAD for the new task.
- *
- * This routine is always called with interrupts disabled.
- *
- * Note: there are two ways to get to the "going out" portion
- * of this code; either by coming in via the entry (_switch)
- * or via "fork" which must set up an environment equivalent
- * to the "_switch" path.  If you change this , you'll have to
- * change the fork code also.
- *
- * The code which creates the new task context is in 'copy_thread'
- * in arch/ppc/kernel/process.c
- */
-_GLOBAL(_switch)
-	stwu	r1,-INT_FRAME_SIZE(r1)
-	mflr	r0
-	stw	r0,INT_FRAME_SIZE+4(r1)
-	/* r3-r12 are caller saved -- Cort */
-	SAVE_NVGPRS(r1)
-	stw	r0,_NIP(r1)	/* Return to switch caller */
-	mfmsr	r11
-	li	r0,MSR_FP	/* Disable floating-point */
-#ifdef CONFIG_ALTIVEC
-BEGIN_FTR_SECTION
-	oris	r0,r0,MSR_VEC@h	/* Disable altivec */
-	mfspr	r12,SPRN_VRSAVE	/* save vrsave register value */
-	stw	r12,THREAD+THREAD_VRSAVE(r2)
-END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
-#endif /* CONFIG_ALTIVEC */
-	and.	r0,r0,r11	/* FP or altivec enabled? */
-	beq+	1f
-	andc	r11,r11,r0
-	MTMSRD(r11)
-	isync
-1:	stw	r11,_MSR(r1)
-	mfcr	r10
-	stw	r10,_CCR(r1)
-	stw	r1,KSP(r3)	/* Set old stack pointer */
-
-#ifdef CONFIG_SMP
-	/* We need a sync somewhere here to make sure that if the
-	 * previous task gets rescheduled on another CPU, it sees all
-	 * stores it has performed on this one.
-	 */
-	sync
-#endif /* CONFIG_SMP */
-
-	tophys(r0,r4)
-	CLR_TOP32(r0)
-	mtspr	SPRN_SPRG3,r0	/* Update current THREAD phys addr */
-	lwz	r1,KSP(r4)	/* Load new stack pointer */
-
-	/* save the old current 'last' for return value */
-	mr	r3,r2
-	addi	r2,r4,-THREAD	/* Update current */
-
-#ifdef CONFIG_ALTIVEC
-BEGIN_FTR_SECTION
-	lwz	r0,THREAD+THREAD_VRSAVE(r2)
-	mtspr	SPRN_VRSAVE,r0		/* if G4, restore VRSAVE reg */
-END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
-#endif /* CONFIG_ALTIVEC */
-	lwz	r0,_CCR(r1)
-	mtcrf	0xFF,r0
-	/* r3-r12 are destroyed -- Cort */
-	REST_NVGPRS(r1)
-
-	lwz	r4,_NIP(r1)	/* Return to _switch caller in new task */
-	mtlr	r4
-	addi	r1,r1,INT_FRAME_SIZE
-	blr
-
-	.globl	fast_exception_return
-fast_exception_return:
-#if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
-	andi.	r10,r9,MSR_RI		/* check for recoverable interrupt */
-	beq	1f			/* if not, we've got problems */
-#endif
-
-2:	REST_4GPRS(3, r11)
-	lwz	r10,_CCR(r11)
-	REST_GPR(1, r11)
-	mtcr	r10
-	lwz	r10,_LINK(r11)
-	mtlr	r10
-	REST_GPR(10, r11)
-	mtspr	SPRN_SRR1,r9
-	mtspr	SPRN_SRR0,r12
-	REST_GPR(9, r11)
-	REST_GPR(12, r11)
-	lwz	r11,GPR11(r11)
-	SYNC
-	RFI
-
-#if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
-/* check if the exception happened in a restartable section */
-1:	lis	r3,exc_exit_restart_end@ha
-	addi	r3,r3,exc_exit_restart_end@l
-	cmplw	r12,r3
-	bge	3f
-	lis	r4,exc_exit_restart@ha
-	addi	r4,r4,exc_exit_restart@l
-	cmplw	r12,r4