OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	05/09/2024 07:14:12 AM	rwxr-xr-x
📄 Kbuild	599 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 MC68328.h	37.82 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 MC68EZ328.h	37.74 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 MC68VZ328.h	41.02 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 a.out-core.h	1.98 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 adb_iop.h	1.09 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 amigahw.h	10.49 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 amigaints.h	3.5 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 amigayle.h	3.19 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 amipcmcia.h	2.51 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 apollohw.h	2.35 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 asm-offsets.h	35 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 asm-prototypes.h	211 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 atafd.h	300 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 atafdreg.h	2.68 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 atari_joystick.h	457 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 atari_stdma.h	514 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 atari_stram.h	528 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 atarihw.h	20.3 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 atariints.h	5.56 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 atarikb.h	1.4 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 atomic.h	4.86 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 bitops.h	12.19 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 blinken.h	641 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 bootinfo.h	783 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 bootstd.h	4.64 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 bug.h	659 bytes	06/16/2023 05:32:39 PM	rw-r--r--
📄 bugs.h	369 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 bvme6000hw.h	3.45 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cache.h	296 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 cacheflush.h	133 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 cacheflush_mm.h	6.92 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cacheflush_no.h	2.61 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 checksum.h	3.4 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cmpxchg.h	3.34 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 coldfire.h	1.61 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 contregs.h	3.31 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 current.h	580 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 delay.h	3.43 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 div64.h	858 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 dma-mapping.h	291 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 dma.h	16.65 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 dsp56k.h	1.24 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 dvma.h	9.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 elf.h	3.07 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 entry.h	5.76 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 export.h	74 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 fb.h	921 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 fbio.h	9.87 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 flat.h	1.02 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 floppy.h	5.06 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 fpu.h	535 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 ftrace.h	12 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 gpio.h	2.64 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 hardirq.h	594 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 hash.h	2.07 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 hp300hw.h	186 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 hwtest.h	467 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 ide.h	1.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 idprom.h	725 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 intersil.h	1.11 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 io.h	383 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 io_mm.h	16.19 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 io_no.h	5.26 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 irq.h	2.57 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 irqflags.h	1.61 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kexec.h	732 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 linkage.h	1.55 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m5206sim.h	6.4 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m520xsim.h	7.15 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m523xsim.h	7.7 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m525xsim.h	10.57 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m5272sim.h	6.05 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m527xsim.h	13.51 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m528xsim.h	9.37 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m52xxacr.h	3.57 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m5307sim.h	7.52 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m53xxacr.h	3.6 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 m53xxsim.h	53.97 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m5407sim.h	6.14 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m5441xsim.h	8.5 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m54xxacr.h	4.82 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m54xxgpt.h	3.66 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m54xxpci.h	6.13 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 m54xxsim.h	3.8 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mac_asc.h	520 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 mac_baboon.h	999 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 mac_iop.h	5.37 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mac_oss.h	1.83 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mac_psc.h	7.25 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mac_via.h	11.44 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 machdep.h	1.34 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 machines.h	3.13 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 machw.h	588 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 macintosh.h	2.02 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 macints.h	3.28 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 math-emu.h	6.74 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mc146818rtc.h	598 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcf8390.h	3.75 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcf_pgalloc.h	2.37 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 mcf_pgtable.h	9.89 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfclk.h	1.01 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfdma.h	6.51 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfgpio.h	8.48 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfintc.h	3.09 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfmmu.h	3.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfpit.h	2.22 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfqspi.h	1.82 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfsim.h	1.5 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfslt.h	1.21 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcftimer.h	2.3 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfuart.h	6.91 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcfwdebug.h	4.99 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mmu.h	243 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 mmu_context.h	7.2 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mmzone.h	264 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 module.h	847 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 motorola_pgalloc.h	2.26 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 motorola_pgtable.h	9.2 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 movs.h	1.44 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mvme147hw.h	2.81 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mvme16xhw.h	2.16 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 natfeat.h	533 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 nettel.h	2.95 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 nubus.h	1.21 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 openprom.h	7.98 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 oplib.h	9.54 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 page.h	1.47 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 page_mm.h	4.06 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 page_no.h	1.28 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 page_offset.h	256 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 parport.h	837 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 pci.h	458 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgalloc.h	444 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgtable.h	127 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgtable_mm.h	4.84 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 pgtable_no.h	1.57 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 processor.h	3.59 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 ptrace.h	643 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 q40_master.h	2.28 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 q40ints.h	749 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 quicc_simple.h	1.79 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 raw_io.h	11.41 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 segment.h	1.42 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 serial.h	1.14 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 setup.h	9.25 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 signal.h	1.34 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 smp.h	32 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 string.h	1.68 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sun3-head.h	353 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 sun3_pgalloc.h	2.26 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sun3_pgtable.h	7.65 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sun3ints.h	989 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 sun3mmu.h	4.91 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sun3x.h	868 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 sun3xflop.h	5.62 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sun3xprom.h	1.31 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 switch_to.h	1.51 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 thread_info.h	2.02 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 timex.h	974 bytes	06/16/2023 05:32:39 PM	rw-r--r--
📄 tlb.h	486 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 tlbflush.h	5.95 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 traps.h	8.33 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 uaccess.h	152 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 uaccess_mm.h	10.31 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 uaccess_no.h	3.69 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 ucontext.h	570 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 unaligned.h	600 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 unistd.h	952 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 user.h	3.78 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 vga.h	651 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 virtconvert.h	947 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 zorro.h	1.17 KB	01/28/2018 09:20:33 PM	rw-r--r--

Editing: mmu_context.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __M68K_MMU_CONTEXT_H
#define __M68K_MMU_CONTEXT_H

#include <asm-generic/mm_hooks.h>
#include <linux/mm_types.h>

static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
}

#ifdef CONFIG_MMU

#if defined(CONFIG_COLDFIRE)

#include <asm/atomic.h>
#include <asm/bitops.h>
#include <asm/mcfmmu.h>
#include <asm/mmu.h>

#define NO_CONTEXT		256
#define LAST_CONTEXT		255
#define FIRST_CONTEXT		1

extern unsigned long context_map[];
extern mm_context_t next_mmu_context;

extern atomic_t nr_free_contexts;
extern struct mm_struct *context_mm[LAST_CONTEXT+1];
extern void steal_context(void);

static inline void get_mmu_context(struct mm_struct *mm)
{
	mm_context_t ctx;

if (mm->context != NO_CONTEXT)
		return;
	while (atomic_dec_and_test_lt(&nr_free_contexts)) {
		atomic_inc(&nr_free_contexts);
		steal_context();
	}
	ctx = next_mmu_context;
	while (test_and_set_bit(ctx, context_map)) {
		ctx = find_next_zero_bit(context_map, LAST_CONTEXT+1, ctx);
		if (ctx > LAST_CONTEXT)
			ctx = 0;
	}
	next_mmu_context = (ctx + 1) & LAST_CONTEXT;
	mm->context = ctx;
	context_mm[ctx] = mm;
}

/*
 * Set up the context for a new address space.
 */
#define init_new_context(tsk, mm)	(((mm)->context = NO_CONTEXT), 0)

/*
 * We're finished using the context for an address space.
 */
static inline void destroy_context(struct mm_struct *mm)
{
	if (mm->context != NO_CONTEXT) {
		clear_bit(mm->context, context_map);
		mm->context = NO_CONTEXT;
		atomic_inc(&nr_free_contexts);
	}
}

static inline void set_context(mm_context_t context, pgd_t *pgd)
{
	__asm__ __volatile__ ("movec %0,%%asid" : : "d" (context));
}

static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
	struct task_struct *tsk)
{
	get_mmu_context(tsk->mm);
	set_context(tsk->mm->context, next->pgd);
}

/*
 * After we have set current->mm to a new value, this activates
 * the context for the new mm so we see the new mappings.
 */
static inline void activate_mm(struct mm_struct *active_mm,
	struct mm_struct *mm)
{
	get_mmu_context(mm);
	set_context(mm->context, mm->pgd);
}

#define deactivate_mm(tsk, mm) do { } while (0)

#define prepare_arch_switch(next) load_ksp_mmu(next)

static inline void load_ksp_mmu(struct task_struct *task)
{
	unsigned long flags;
	struct mm_struct *mm;
	int asid;
	pgd_t *pgd;
	pmd_t *pmd;
	pte_t *pte;
	unsigned long mmuar;

local_irq_save(flags);
	mmuar = task->thread.ksp;

/* Search for a valid TLB entry, if one is found, don't remap */
	mmu_write(MMUAR, mmuar);
	mmu_write(MMUOR, MMUOR_STLB | MMUOR_ADR);
	if (mmu_read(MMUSR) & MMUSR_HIT)
		goto end;

if (mmuar >= PAGE_OFFSET) {
		mm = &init_mm;
	} else {
		pr_info("load_ksp_mmu: non-kernel mm found: 0x%p\n", task->mm);
		mm = task->mm;
	}

if (!mm)
		goto bug;

pgd = pgd_offset(mm, mmuar);
	if (pgd_none(*pgd))
		goto bug;

pmd = pmd_offset(pgd, mmuar);
	if (pmd_none(*pmd))
		goto bug;

pte = (mmuar >= PAGE_OFFSET) ? pte_offset_kernel(pmd, mmuar)
				     : pte_offset_map(pmd, mmuar);
	if (pte_none(*pte) || !pte_present(*pte))
		goto bug;

set_pte(pte, pte_mkyoung(*pte));
	asid = mm->context & 0xff;
	if (!pte_dirty(*pte) && mmuar <= PAGE_OFFSET)
		set_pte(pte, pte_wrprotect(*pte));

mmu_write(MMUTR, (mmuar & PAGE_MASK) | (asid << MMUTR_IDN) |
		(((int)(pte->pte) & (int)CF_PAGE_MMUTR_MASK)
		>> CF_PAGE_MMUTR_SHIFT) | MMUTR_V);

mmu_write(MMUDR, (pte_val(*pte) & PAGE_MASK) |
		((pte->pte) & CF_PAGE_MMUDR_MASK) | MMUDR_SZ_8KB | MMUDR_X);

mmu_write(MMUOR, MMUOR_ACC | MMUOR_UAA);

goto end;

bug:
	pr_info("ksp load failed: mm=0x%p ksp=0x08%lx\n", mm, mmuar);
end:
	local_irq_restore(flags);
}

#elif defined(CONFIG_SUN3)
#include <asm/sun3mmu.h>
#include <linux/sched.h>

extern unsigned long get_free_context(struct mm_struct *mm);
extern void clear_context(unsigned long context);

/* set the context for a new task to unmapped */
static inline int init_new_context(struct task_struct *tsk,
				   struct mm_struct *mm)
{
	mm->context = SUN3_INVALID_CONTEXT;
	return 0;
}

/* find the context given to this process, and if it hasn't already
   got one, go get one for it. */
static inline void get_mmu_context(struct mm_struct *mm)
{
	if (mm->context == SUN3_INVALID_CONTEXT)
		mm->context = get_free_context(mm);
}

/* flush context if allocated... */
static inline void destroy_context(struct mm_struct *mm)
{
	if (mm->context != SUN3_INVALID_CONTEXT)
		clear_context(mm->context);
}

static inline void activate_context(struct mm_struct *mm)
{
	get_mmu_context(mm);
	sun3_put_context(mm->context);
}

static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
			     struct task_struct *tsk)
{
	activate_context(tsk->mm);
}

#define deactivate_mm(tsk, mm)	do { } while (0)

static inline void activate_mm(struct mm_struct *prev_mm,
			       struct mm_struct *next_mm)
{
	activate_context(next_mm);
}

#else

#include <asm/setup.h>
#include <asm/page.h>
#include <asm/pgalloc.h>

static inline int init_new_context(struct task_struct *tsk,
				   struct mm_struct *mm)
{
	mm->context = virt_to_phys(mm->pgd);
	return 0;
}

#define destroy_context(mm)		do { } while(0)

static inline void switch_mm_0230(struct mm_struct *mm)
{
	unsigned long crp[2] = {
		0x80000000 | _PAGE_TABLE, mm->context
	};
	unsigned long tmp;

asm volatile (".chip 68030");

/* flush MC68030/MC68020 caches (they are virtually addressed) */
	asm volatile (
		"movec %%cacr,%0;"
		"orw %1,%0; "
		"movec %0,%%cacr"
		: "=d" (tmp) : "di" (FLUSH_I_AND_D));

/* Switch the root pointer. For a 030-only kernel,
	 * avoid flushing the whole ATC, we only need to
	 * flush the user entries. The 68851 does this by
	 * itself. Avoid a runtime check here.
	 */
	asm volatile (
#ifdef CPU_M68030_ONLY
		"pmovefd %0,%%crp; "
		"pflush #0,#4"
#else
		"pmove %0,%%crp"
#endif
		: : "m" (crp[0]));

asm volatile (".chip 68k");
}

static inline void switch_mm_0460(struct mm_struct *mm)
{
	asm volatile (".chip 68040");

/* flush address translation cache (user entries) */
	asm volatile ("pflushan");

/* switch the root pointer */
	asm volatile ("movec %0,%%urp" : : "r" (mm->context));

if (CPU_IS_060) {
		unsigned long tmp;

/* clear user entries in the branch cache */
		asm volatile (
			"movec %%cacr,%0; "
		        "orl %1,%0; "
		        "movec %0,%%cacr"
			: "=d" (tmp): "di" (0x00200000));
	}

asm volatile (".chip 68k");
}

static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
{
	if (prev != next) {
		if (CPU_IS_020_OR_030)
			switch_mm_0230(next);
		else
			switch_mm_0460(next);
	}
}

#define deactivate_mm(tsk,mm)	do { } while (0)

static inline void activate_mm(struct mm_struct *prev_mm,
			       struct mm_struct *next_mm)
{
	next_mm->context = virt_to_phys(next_mm->pgd);

if (CPU_IS_020_OR_030)
		switch_mm_0230(next_mm);
	else
		switch_mm_0460(next_mm);
}

#endif

#else /* !CONFIG_MMU */

static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
	return 0;
}

static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
{
}

#define destroy_context(mm)	do { } while (0)
#define deactivate_mm(tsk,mm)	do { } while (0)

static inline void activate_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm)
{
}

#endif /* CONFIG_MMU */
#endif /* __M68K_MMU_CONTEXT_H */