24 files changed, 129 insertions, 269 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index eb1224c..0648640 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -112,7 +112,7 @@ CFLAGS += $(cpu-as-y)
 # Default to the common case.
 KBUILD_DEFCONFIG := common_defconfig
 
-head-y				:= arch/powerpc/kernel/head.o
+head-y				:= arch/powerpc/kernel/head_32.o
 head-$(CONFIG_PPC64)		:= arch/powerpc/kernel/head_64.o
 head-$(CONFIG_8xx)		:= arch/powerpc/kernel/head_8xx.o
 head-$(CONFIG_4xx)		:= arch/powerpc/kernel/head_4xx.o
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 06d618e..344cab6 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -10,7 +10,7 @@ CFLAGS_prom_init.o      += -fPIC
 CFLAGS_btext.o		+= -fPIC
 endif
 
-extra-$(CONFIG_PPC_STD_MMU)	:= head.o
+extra-$(CONFIG_PPC_STD_MMU)	:= head_32.o
 extra-$(CONFIG_PPC64)		:= head_64.o
 extra-$(CONFIG_40x)		:= head_4xx.o
 extra-$(CONFIG_44x)		:= head_44x.o
@@ -21,7 +21,7 @@ extra-$(CONFIG_PPC_FPU)		+= fpu.o
 extra-y				+= vmlinux.lds
 
 obj-y				:= traps.o prom.o semaphore.o
-obj-$(CONFIG_PPC32)		+= setup.o process.o
+obj-$(CONFIG_PPC32)		+= setup_32.o process.o
 obj-$(CONFIG_PPC64)		+= idle_power4.o
 ifeq ($(CONFIG_PPC32),y)
 obj-$(CONFIG_PPC_OF)		+= prom_init.o of_device.o
diff --git a/arch/powerpc/kernel/head.S b/arch/powerpc/kernel/head_32.S
index d9dbbd4..d9dbbd4 100644
--- a/arch/powerpc/kernel/head.S
+++ b/arch/powerpc/kernel/head_32.S
diff --git a/arch/powerpc/kernel/setup.c b/arch/powerpc/kernel/setup_32.c
index 27d7f82..27d7f82 100644
--- a/arch/powerpc/kernel/setup.c
+++ b/arch/powerpc/kernel/setup_32.c
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index 347f979..a8cedb9 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -3,7 +3,7 @@
 #
 
 obj-y			:= strcase.o string.o
-obj-$(CONFIG_PPC32)	+= div64.o copy32.o checksum.o
-obj-$(CONFIG_PPC64)	+= copypage.o copyuser.o memcpy.o usercopy.o \
-			   sstep.o checksum64.o
+obj-$(CONFIG_PPC32)	+= div64.o copy_32.o checksum_32.o
+obj-$(CONFIG_PPC64)	+= copypage_64.o copyuser_64.o memcpy_64.o \
+			   usercopy_64.o sstep.o checksum_64.o mem_64.o
 obj-$(CONFIG_PPC_ISERIES) += e2a.o
diff --git a/arch/powerpc/lib/checksum.S b/arch/powerpc/lib/checksum_32.S
index 7874e8a..7874e8a 100644
--- a/arch/powerpc/lib/checksum.S
+++ b/arch/powerpc/lib/checksum_32.S
diff --git a/arch/powerpc/lib/checksum64.S b/arch/powerpc/lib/checksum_64.S
index ef96c6c..ef96c6c 100644
--- a/arch/powerpc/lib/checksum64.S
+++ b/arch/powerpc/lib/checksum_64.S
diff --git a/arch/powerpc/lib/copy32.S b/arch/powerpc/lib/copy_32.S
index 420a912..420a912 100644
--- a/arch/powerpc/lib/copy32.S
+++ b/arch/powerpc/lib/copy_32.S
diff --git a/arch/powerpc/lib/copypage.S b/arch/powerpc/lib/copypage_64.S
index 733d616..733d616 100644
--- a/arch/powerpc/lib/copypage.S
+++ b/arch/powerpc/lib/copypage_64.S
diff --git a/arch/powerpc/lib/copyuser.S b/arch/powerpc/lib/copyuser_64.S
index a0b3fbb..a0b3fbb 100644
--- a/arch/powerpc/lib/copyuser.S
+++ b/arch/powerpc/lib/copyuser_64.S
diff --git a/arch/powerpc/lib/mem_64.S b/arch/powerpc/lib/mem_64.S
new file mode 100644
index 0000000..68df202
--- /dev/null
+++ b/arch/powerpc/lib/mem_64.S
@@ -0,0 +1,119 @@
+/*
+ * String handling functions for PowerPC.
+ *
+ * Copyright (C) 1996 Paul Mackerras.
+ *
+ * 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/errno.h>
+#include <asm/ppc_asm.h>
+
+_GLOBAL(memset)
+	neg	r0,r3
+	rlwimi	r4,r4,8,16,23
+	andi.	r0,r0,7			/* # bytes to be 8-byte aligned */
+	rlwimi	r4,r4,16,0,15
+	cmplw	cr1,r5,r0		/* do we get that far? */
+	rldimi	r4,r4,32,0
+	mtcrf	1,r0
+	mr	r6,r3
+	blt	cr1,8f
+	beq+	3f			/* if already 8-byte aligned */
+	subf	r5,r0,r5
+	bf	31,1f
+	stb	r4,0(r6)
+	addi	r6,r6,1
+1:	bf	30,2f
+	sth	r4,0(r6)
+	addi	r6,r6,2
+2:	bf	29,3f
+	stw	r4,0(r6)
+	addi	r6,r6,4
+3:	srdi.	r0,r5,6
+	clrldi	r5,r5,58
+	mtctr	r0
+	beq	5f
+4:	std	r4,0(r6)
+	std	r4,8(r6)
+	std	r4,16(r6)
+	std	r4,24(r6)
+	std	r4,32(r6)
+	std	r4,40(r6)
+	std	r4,48(r6)
+	std	r4,56(r6)
+	addi	r6,r6,64
+	bdnz	4b
+5:	srwi.	r0,r5,3
+	clrlwi	r5,r5,29
+	mtcrf	1,r0
+	beq	8f
+	bf	29,6f
+	std	r4,0(r6)
+	std	r4,8(r6)
+	std	r4,16(r6)
+	std	r4,24(r6)
+	addi	r6,r6,32
+6:	bf	30,7f
+	std	r4,0(r6)
+	std	r4,8(r6)
+	addi	r6,r6,16
+7:	bf	31,8f
+	std	r4,0(r6)
+	addi	r6,r6,8
+8:	cmpwi	r5,0
+	mtcrf	1,r5
+	beqlr+
+	bf	29,9f
+	stw	r4,0(r6)
+	addi	r6,r6,4
+9:	bf	30,10f
+	sth	r4,0(r6)
+	addi	r6,r6,2
+10:	bflr	31
+	stb	r4,0(r6)
+	blr
+
+_GLOBAL(memmove)
+	cmplw	0,r3,r4
+	bgt	.backwards_memcpy
+	b	.memcpy
+
+_GLOBAL(backwards_memcpy)
+	rlwinm.	r7,r5,32-3,3,31		/* r0 = r5 >> 3 */
+	add	r6,r3,r5
+	add	r4,r4,r5
+	beq	2f
+	andi.	r0,r6,3
+	mtctr	r7
+	bne	5f
+1:	lwz	r7,-4(r4)
+	lwzu	r8,-8(r4)
+	stw	r7,-4(r6)
+	stwu	r8,-8(r6)
+	bdnz	1b
+	andi.	r5,r5,7
+2:	cmplwi	0,r5,4
+	blt	3f
+	lwzu	r0,-4(r4)
+	subi	r5,r5,4
+	stwu	r0,-4(r6)
+3:	cmpwi	0,r5,0
+	beqlr
+	mtctr	r5
+4:	lbzu	r0,-1(r4)
+	stbu	r0,-1(r6)
+	bdnz	4b
+	blr
+5:	mtctr	r0
+6:	lbzu	r7,-1(r4)
+	stbu	r7,-1(r6)
+	bdnz	6b
+	subf	r5,r0,r5
+	rlwinm.	r7,r5,32-3,3,31
+	beq	2b
+	mtctr	r7
+	b	1b
diff --git a/arch/powerpc/lib/memcpy.S b/arch/powerpc/lib/memcpy_64.S
index 9ccacdf..9ccacdf 100644
--- a/arch/powerpc/lib/memcpy.S
+++ b/arch/powerpc/lib/memcpy_64.S
diff --git a/arch/powerpc/lib/usercopy.c b/arch/powerpc/lib/usercopy_64.c
index 5eea6f3..5eea6f3 100644
--- a/arch/powerpc/lib/usercopy.c
+++ b/arch/powerpc/lib/usercopy_64.c
diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile
index afd3be1..35497de 100644
--- a/arch/powerpc/mm/Makefile
+++ b/arch/powerpc/mm/Makefile
@@ -3,10 +3,10 @@
 #
 
 obj-y				:= fault.o mem.o lmb.o
-obj-$(CONFIG_PPC32)		+= init.o pgtable.o mmu_context.o \
-				   tlb.o
-obj-$(CONFIG_PPC64)		+= init64.o pgtable64.o mmu_context64.o
-obj-$(CONFIG_PPC_STD_MMU_32)	+= ppc_mmu.o hash_32.o
+obj-$(CONFIG_PPC32)		+= init_32.o pgtable_32.o mmu_context_32.o \
+				   tlb_32.o
+obj-$(CONFIG_PPC64)		+= init_64.o pgtable_64.o mmu_context_64.o
+obj-$(CONFIG_PPC_STD_MMU_32)	+= ppc_mmu_32.o hash_low_32.o
 obj-$(CONFIG_40x)		+= 4xx_mmu.o
 obj-$(CONFIG_44x)		+= 44x_mmu.o
 obj-$(CONFIG_FSL_BOOKE)		+= fsl_booke_mmu.o
diff --git a/arch/powerpc/mm/hash_32.S b/arch/powerpc/mm/hash_low_32.S
index 57278a8..57278a8 100644
--- a/arch/powerpc/mm/hash_32.S
+++ b/arch/powerpc/mm/hash_low_32.S
diff --git a/arch/powerpc/mm/init.c b/arch/powerpc/mm/init_32.c
index bf13c14..bf13c14 100644
--- a/arch/powerpc/mm/init.c
+++ b/arch/powerpc/mm/init_32.c
diff --git a/arch/powerpc/mm/init64.c b/arch/powerpc/mm/init_64.c
index c0ce6a7..c0ce6a7 100644
--- a/arch/powerpc/mm/init64.c
+++ b/arch/powerpc/mm/init_64.c
diff --git a/arch/powerpc/mm/mem64.c b/arch/powerpc/mm/mem64.c
deleted file mode 100644
index ef765a8..0000000
--- a/arch/powerpc/mm/mem64.c
+++ /dev/null
@@ -1,259 +0,0 @@
-/*
- *  PowerPC version 
- *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- *  Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
- *  and Cort Dougan (PReP) (cort@cs.nmt.edu)
- *    Copyright (C) 1996 Paul Mackerras
- *  Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
- *
- *  Derived from "arch/i386/mm/init.c"
- *    Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
- *
- *  Dave Engebretsen <engebret@us.ibm.com>
- *      Rework for PPC64 port.
- *
- *  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/config.h>
-#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/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/stddef.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/bootmem.h>
-#include <linux/highmem.h>
-#include <linux/idr.h>
-#include <linux/nodemask.h>
-#include <linux/module.h>
-
-#include <asm/pgalloc.h>
-#include <asm/page.h>
-#include <asm/prom.h>
-#include <asm/lmb.h>
-#include <asm/rtas.h>
-#include <asm/io.h>
-#include <asm/mmu_context.h>
-#include <asm/pgtable.h>
-#include <asm/mmu.h>
-#include <asm/uaccess.h>
-#include <asm/smp.h>
-#include <asm/machdep.h>
-#include <asm/tlb.h>
-#include <asm/eeh.h>
-#include <asm/processor.h>
-#include <asm/mmzone.h>
-#include <asm/cputable.h>
-#include <asm/ppcdebug.h>
-#include <asm/sections.h>
-#include <asm/system.h>
-#include <asm/iommu.h>
-#include <asm/abs_addr.h>
-#include <asm/vdso.h>
-#include <asm/imalloc.h>
-
-/*
- * This is called by /dev/mem to know if a given address has to
- * be mapped non-cacheable or not
- */
-int page_is_ram(unsigned long pfn)
-{
-	int i;
-	unsigned long paddr = (pfn << PAGE_SHIFT);
-
-	for (i=0; i < lmb.memory.cnt; i++) {
-		unsigned long base;
-
-		base = lmb.memory.region[i].base;
-
-		if ((paddr >= base) &&
-			(paddr < (base + lmb.memory.region[i].size))) {
-			return 1;
-		}
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(page_is_ram);
-
-pgprot_t phys_mem_access_prot(struct file *file, unsigned long addr,
-			      unsigned long size, pgprot_t vma_prot)
-{
-	if (ppc_md.phys_mem_access_prot)
-		return ppc_md.phys_mem_access_prot(file, addr, size, vma_prot);
-
-	if (!page_is_ram(addr >> PAGE_SHIFT))
-		vma_prot = __pgprot(pgprot_val(vma_prot)
-				    | _PAGE_GUARDED | _PAGE_NO_CACHE);
-	return vma_prot;
-}
-EXPORT_SYMBOL(phys_mem_access_prot);
-
-void show_mem(void)
-{
-	unsigned long total = 0, reserved = 0;
-	unsigned long shared = 0, cached = 0;
-	struct page *page;
-	pg_data_t *pgdat;
-	unsigned long i;
-
-	printk("Mem-info:\n");
-	show_free_areas();
-	printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
-	for_each_pgdat(pgdat) {
-		for (i = 0; i < pgdat->node_spanned_pages; i++) {
-			page = pgdat_page_nr(pgdat, i);
-			total++;
-			if (PageReserved(page))
-				reserved++;
-			else if (PageSwapCache(page))
-				cached++;
-			else if (page_count(page))
-				shared += page_count(page) - 1;
-		}
-	}
-	printk("%ld pages of RAM\n", total);
-	printk("%ld reserved pages\n", reserved);
-	printk("%ld pages shared\n", shared);
-	printk("%ld pages swap cached\n", cached);
-}
-
-/*
- * This is called when a page has been modified by the kernel.
- * It just marks the page as not i-cache clean.  We do the i-cache
- * flush later when the page is given to a user process, if necessary.
- */
-void flush_dcache_page(struct page *page)
-{
-	if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
-		return;
-	/* avoid an atomic op if possible */
-	if (test_bit(PG_arch_1, &page->flags))
-		clear_bit(PG_arch_1, &page->flags);
-}
-EXPORT_SYMBOL(flush_dcache_page);
-
-void clear_user_page(void *page, unsigned long vaddr, struct page *pg)
-{
-	clear_page(page);
-
-	if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
-		return;
-	/*
-	 * We shouldnt have to do this, but some versions of glibc
-	 * require it (ld.so assumes zero filled pages are icache clean)
-	 * - Anton
-	 */
-
-	/* avoid an atomic op if possible */
-	if (test_bit(PG_arch_1, &pg->flags))
-		clear_bit(PG_arch_1, &pg->flags);
-}
-EXPORT_SYMBOL(clear_user_page);
-
-void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
-		    struct page *pg)
-{
-	copy_page(vto, vfrom);
-
-	/*
-	 * We should be able to use the following optimisation, however
-	 * there are two problems.
-	 * Firstly a bug in some versions of binutils meant PLT sections
-	 * were not marked executable.
-	 * Secondly the first word in the GOT section is blrl, used
-	 * to establish the GOT address. Until recently the GOT was
-	 * not marked executable.
-	 * - Anton
-	 */
-#if 0
-	if (!vma->vm_file && ((vma->vm_flags & VM_EXEC) == 0))
-		return;
-#endif
-
-	if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
-		return;
-
-	/* avoid an atomic op if possible */
-	if (test_bit(PG_arch_1, &pg->flags))
-		clear_bit(PG_arch_1, &pg->flags);
-}
-
-void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
-			     unsigned long addr, int len)
-{
-	unsigned long maddr;
-
-	maddr = (unsigned long)page_address(page) + (addr & ~PAGE_MASK);
-	flush_icache_range(maddr, maddr + len);
-}
-EXPORT_SYMBOL(flush_icache_user_range);
-
-/*
- * This is called at the end of handling a user page fault, when the
- * fault has been handled by updating a PTE in the linux page tables.
- * We use it to preload an HPTE into the hash table corresponding to
- * the updated linux PTE.
- * 
- * This must always be called with the mm->page_table_lock held
- */
-void update_mmu_cache(struct vm_area_struct *vma, unsigned long ea,
-		      pte_t pte)
-{
-	unsigned long vsid;
-	void *pgdir;
-	pte_t *ptep;
-	int local = 0;
-	cpumask_t tmp;
-	unsigned long flags;
-
-	/* handle i-cache coherency */
-	if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE) &&
-	    !cpu_has_feature(CPU_FTR_NOEXECUTE)) {
-		unsigned long pfn = pte_pfn(pte);
-		if (pfn_valid(pfn)) {
-			struct page *page = pfn_to_page(pfn);
-			if (!PageReserved(page)
-			    && !test_bit(PG_arch_1, &page->flags)) {
-				__flush_dcache_icache(page_address(page));
-				set_bit(PG_arch_1, &page->flags);
-			}
-		}
-	}
-
-	/* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */
-	if (!pte_young(pte))
-		return;
-
-	pgdir = vma->vm_mm->pgd;
-	if (pgdir == NULL)
-		return;
-
-	ptep = find_linux_pte(pgdir, ea);
-	if (!ptep)
-		return;
-
-	vsid = get_vsid(vma->vm_mm->context.id, ea);
-
-	local_irq_save(flags);
-	tmp = cpumask_of_cpu(smp_processor_id());
-	if (cpus_equal(vma->vm_mm->cpu_vm_mask, tmp))
-		local = 1;
-
-	__hash_page(ea, pte_val(pte) & (_PAGE_USER|_PAGE_RW), vsid, ptep,
-		    0x300, local);
-	local_irq_restore(flags);
-}
diff --git a/arch/powerpc/mm/mmu_context.c b/arch/powerpc/mm/mmu_context_32.c
index a8816e0..a8816e0 100644
--- a/arch/powerpc/mm/mmu_context.c
+++ b/arch/powerpc/mm/mmu_context_32.c
diff --git a/arch/powerpc/mm/mmu_context64.c b/arch/powerpc/mm/mmu_context_64.c
index 714a84d..714a84d 100644
--- a/arch/powerpc/mm/mmu_context64.c
+++ b/arch/powerpc/mm/mmu_context_64.c
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable_32.c
index 5792e53..5792e53 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable_32.c
diff --git a/arch/powerpc/mm/pgtable64.c b/arch/powerpc/mm/pgtable_64.c
index 724f97e..724f97e 100644
--- a/arch/powerpc/mm/pgtable64.c
+++ b/arch/powerpc/mm/pgtable_64.c
diff --git a/arch/powerpc/mm/ppc_mmu.c b/arch/powerpc/mm/ppc_mmu_32.c
index cef9e83..cef9e83 100644
--- a/arch/powerpc/mm/ppc_mmu.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
diff --git a/arch/powerpc/mm/tlb.c b/arch/powerpc/mm/tlb_32.c
index 6c3dc3c..6c3dc3c 100644
--- a/arch/powerpc/mm/tlb.c
+++ b/arch/powerpc/mm/tlb_32.c