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1 | /* |
2 | * linux/arch/arm/mm/tlbv3.S |
3 | * |
4 | * Copyright (C) 1997-2002 Russell King |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License version 2 as |
8 | * published by the Free Software Foundation. |
9 | * |
10 | * ARM architecture version 3 TLB handling functions. |
11 | * |
12 | * Processors: ARM610, ARM710. |
13 | */ |
14 | #include <linux/linkage.h> |
15 | #include <linux/init.h> |
16 | #include <asm/asm-offsets.h> |
17 | #include <asm/tlbflush.h> |
18 | #include "proc-macros.S" |
19 | |
20 | .align 5 |
21 | /* |
22 | * v3_flush_user_tlb_range(start, end, mm) |
23 | * |
24 | * Invalidate a range of TLB entries in the specified address space. |
25 | * |
26 | * - start - range start address |
27 | * - end - range end address |
28 | * - mm - mm_struct describing address space |
29 | */ |
30 | .align 5 |
31 | ENTRY(v3_flush_user_tlb_range) |
32 | vma_vm_mm r2, r2 |
33 | act_mm r3 @ get current->active_mm |
34 | teq r2, r3 @ == mm ? |
35 | movne pc, lr @ no, we dont do anything |
36 | ENTRY(v3_flush_kern_tlb_range) |
37 | bic r0, r0, #0x0ff |
38 | bic r0, r0, #0xf00 |
39 | 1: mcr p15, 0, r0, c6, c0, 0 @ invalidate TLB entry |
40 | add r0, r0, #PAGE_SZ |
41 | cmp r0, r1 |
42 | blo 1b |
43 | mov pc, lr |
44 | |
45 | __INITDATA |
46 | |
47 | .type v3_tlb_fns, #object |
48 | ENTRY(v3_tlb_fns) |
49 | .long v3_flush_user_tlb_range |
50 | .long v3_flush_kern_tlb_range |
51 | .long v3_tlb_flags |
52 | .size v3_tlb_fns, . - v3_tlb_fns |
53 |
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v2.6.34-rc5
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