53 lines
1.2 KiB
ArmAsm
53 lines
1.2 KiB
ArmAsm
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/*
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* linux/arch/arm/mm/tlbv3.S
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*
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* Copyright (C) 1997-2002 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* ARM architecture version 3 TLB handling functions.
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*
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* Processors: ARM610, ARM710.
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*/
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#include <linux/linkage.h>
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#include <linux/init.h>
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#include <asm/asm-offsets.h>
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#include <asm/tlbflush.h>
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#include "proc-macros.S"
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.align 5
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/*
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* v3_flush_user_tlb_range(start, end, mm)
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*
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* Invalidate a range of TLB entries in the specified address space.
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*
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* - start - range start address
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* - end - range end address
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* - mm - mm_struct describing address space
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*/
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.align 5
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ENTRY(v3_flush_user_tlb_range)
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vma_vm_mm r2, r2
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act_mm r3 @ get current->active_mm
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teq r2, r3 @ == mm ?
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movne pc, lr @ no, we dont do anything
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ENTRY(v3_flush_kern_tlb_range)
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bic r0, r0, #0x0ff
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bic r0, r0, #0xf00
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1: mcr p15, 0, r0, c6, c0, 0 @ invalidate TLB entry
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add r0, r0, #PAGE_SZ
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cmp r0, r1
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blo 1b
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mov pc, lr
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__INITDATA
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.type v3_tlb_fns, #object
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ENTRY(v3_tlb_fns)
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.long v3_flush_user_tlb_range
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.long v3_flush_kern_tlb_range
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.long v3_tlb_flags
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.size v3_tlb_fns, . - v3_tlb_fns
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