diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mm/tlb-v3.S |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/arm/mm/tlb-v3.S')
-rw-r--r-- | arch/arm/mm/tlb-v3.S | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/mm/tlb-v3.S b/arch/arm/mm/tlb-v3.S new file mode 100644 index 000000000000..44b0daeaff9b --- /dev/null +++ b/arch/arm/mm/tlb-v3.S | |||
@@ -0,0 +1,52 @@ | |||
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/constants.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 | ||