diff options
Diffstat (limited to 'arch/arm26/lib/memset.S')
| -rw-r--r-- | arch/arm26/lib/memset.S | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/arch/arm26/lib/memset.S b/arch/arm26/lib/memset.S deleted file mode 100644 index aedec10b58f5..000000000000 --- a/arch/arm26/lib/memset.S +++ /dev/null | |||
| @@ -1,80 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * linux/arch/arm26/lib/memset.S | ||
| 3 | * | ||
| 4 | * Copyright (C) 1995-2000 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 | * ASM optimised string functions | ||
| 11 | */ | ||
| 12 | #include <linux/linkage.h> | ||
| 13 | #include <asm/assembler.h> | ||
| 14 | |||
| 15 | .text | ||
| 16 | .align 5 | ||
| 17 | .word 0 | ||
| 18 | |||
| 19 | 1: subs r2, r2, #4 @ 1 do we have enough | ||
| 20 | blt 5f @ 1 bytes to align with? | ||
| 21 | cmp r3, #2 @ 1 | ||
| 22 | strltb r1, [r0], #1 @ 1 | ||
| 23 | strleb r1, [r0], #1 @ 1 | ||
| 24 | strb r1, [r0], #1 @ 1 | ||
| 25 | add r2, r2, r3 @ 1 (r2 = r2 - (4 - r3)) | ||
| 26 | /* | ||
| 27 | * The pointer is now aligned and the length is adjusted. Try doing the | ||
| 28 | * memzero again. | ||
| 29 | */ | ||
| 30 | |||
| 31 | ENTRY(memset) | ||
| 32 | ands r3, r0, #3 @ 1 unaligned? | ||
| 33 | bne 1b @ 1 | ||
| 34 | /* | ||
| 35 | * we know that the pointer in r0 is aligned to a word boundary. | ||
| 36 | */ | ||
| 37 | orr r1, r1, r1, lsl #8 | ||
| 38 | orr r1, r1, r1, lsl #16 | ||
| 39 | mov r3, r1 | ||
| 40 | cmp r2, #16 | ||
| 41 | blt 4f | ||
| 42 | /* | ||
| 43 | * We need an extra register for this loop - save the return address and | ||
| 44 | * use the LR | ||
| 45 | */ | ||
| 46 | str lr, [sp, #-4]! | ||
| 47 | mov ip, r1 | ||
| 48 | mov lr, r1 | ||
| 49 | |||
| 50 | 2: subs r2, r2, #64 | ||
| 51 | stmgeia r0!, {r1, r3, ip, lr} @ 64 bytes at a time. | ||
| 52 | stmgeia r0!, {r1, r3, ip, lr} | ||
| 53 | stmgeia r0!, {r1, r3, ip, lr} | ||
| 54 | stmgeia r0!, {r1, r3, ip, lr} | ||
| 55 | bgt 2b | ||
| 56 | LOADREGS(eqfd, sp!, {pc}) @ Now <64 bytes to go. | ||
| 57 | /* | ||
| 58 | * No need to correct the count; we're only testing bits from now on | ||
| 59 | */ | ||
| 60 | tst r2, #32 | ||
| 61 | stmneia r0!, {r1, r3, ip, lr} | ||
| 62 | stmneia r0!, {r1, r3, ip, lr} | ||
| 63 | tst r2, #16 | ||
| 64 | stmneia r0!, {r1, r3, ip, lr} | ||
| 65 | ldr lr, [sp], #4 | ||
| 66 | |||
| 67 | 4: tst r2, #8 | ||
| 68 | stmneia r0!, {r1, r3} | ||
| 69 | tst r2, #4 | ||
| 70 | strne r1, [r0], #4 | ||
| 71 | /* | ||
| 72 | * When we get here, we've got less than 4 bytes to zero. We | ||
| 73 | * may have an unaligned pointer as well. | ||
| 74 | */ | ||
| 75 | 5: tst r2, #2 | ||
| 76 | strneb r1, [r0], #1 | ||
| 77 | strneb r1, [r0], #1 | ||
| 78 | tst r2, #1 | ||
| 79 | strneb r1, [r0], #1 | ||
| 80 | RETINSTR(mov,pc,lr) | ||