summaryrefslogtreecommitdiff
path: root/arch/avr32/lib/findbit.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/avr32/lib/findbit.S')
-rw-r--r--arch/avr32/lib/findbit.S185
1 files changed, 0 insertions, 185 deletions
diff --git a/arch/avr32/lib/findbit.S b/arch/avr32/lib/findbit.S
deleted file mode 100644
index b93586460be6..000000000000
--- a/arch/avr32/lib/findbit.S
+++ /dev/null
@@ -1,185 +0,0 @@
-/*
- * Copyright (C) 2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/linkage.h>
-
- .text
- /*
- * unsigned long find_first_zero_bit(const unsigned long *addr,
- * unsigned long size)
- */
-ENTRY(find_first_zero_bit)
- cp.w r11, 0
- reteq r11
- mov r9, r11
-1: ld.w r8, r12[0]
- com r8
- brne .L_found
- sub r12, -4
- sub r9, 32
- brgt 1b
- retal r11
-
- /*
- * unsigned long find_next_zero_bit(const unsigned long *addr,
- * unsigned long size,
- * unsigned long offset)
- */
-ENTRY(find_next_zero_bit)
- lsr r8, r10, 5
- sub r9, r11, r10
- retle r11
-
- lsl r8, 2
- add r12, r8
- andl r10, 31, COH
- breq 1f
-
- /* offset is not word-aligned. Handle the first (32 - r10) bits */
- ld.w r8, r12[0]
- com r8
- sub r12, -4
- lsr r8, r8, r10
- brne .L_found
-
- /* r9 = r9 - (32 - r10) = r9 + r10 - 32 */
- add r9, r10
- sub r9, 32
- retle r11
-
- /* Main loop. offset must be word-aligned */
-1: ld.w r8, r12[0]
- com r8
- brne .L_found
- sub r12, -4
- sub r9, 32
- brgt 1b
- retal r11
-
- /* Common return path for when a bit is actually found. */
-.L_found:
- brev r8
- clz r10, r8
- rsub r9, r11
- add r10, r9
-
- /* XXX: If we don't have to return exactly "size" when the bit
- is not found, we may drop this "min" thing */
- min r12, r11, r10
- retal r12
-
- /*
- * unsigned long find_first_bit(const unsigned long *addr,
- * unsigned long size)
- */
-ENTRY(find_first_bit)
- cp.w r11, 0
- reteq r11
- mov r9, r11
-1: ld.w r8, r12[0]
- cp.w r8, 0
- brne .L_found
- sub r12, -4
- sub r9, 32
- brgt 1b
- retal r11
-
- /*
- * unsigned long find_next_bit(const unsigned long *addr,
- * unsigned long size,
- * unsigned long offset)
- */
-ENTRY(find_next_bit)
- lsr r8, r10, 5
- sub r9, r11, r10
- retle r11
-
- lsl r8, 2
- add r12, r8
- andl r10, 31, COH
- breq 1f
-
- /* offset is not word-aligned. Handle the first (32 - r10) bits */
- ld.w r8, r12[0]
- sub r12, -4
- lsr r8, r8, r10
- brne .L_found
-
- /* r9 = r9 - (32 - r10) = r9 + r10 - 32 */
- add r9, r10
- sub r9, 32
- retle r11
-
- /* Main loop. offset must be word-aligned */
-1: ld.w r8, r12[0]
- cp.w r8, 0
- brne .L_found
- sub r12, -4
- sub r9, 32
- brgt 1b
- retal r11
-
-ENTRY(find_next_bit_le)
- lsr r8, r10, 5
- sub r9, r11, r10
- retle r11
-
- lsl r8, 2
- add r12, r8
- andl r10, 31, COH
- breq 1f
-
- /* offset is not word-aligned. Handle the first (32 - r10) bits */
- ldswp.w r8, r12[0]
- sub r12, -4
- lsr r8, r8, r10
- brne .L_found
-
- /* r9 = r9 - (32 - r10) = r9 + r10 - 32 */
- add r9, r10
- sub r9, 32
- retle r11
-
- /* Main loop. offset must be word-aligned */
-1: ldswp.w r8, r12[0]
- cp.w r8, 0
- brne .L_found
- sub r12, -4
- sub r9, 32
- brgt 1b
- retal r11
-
-ENTRY(find_next_zero_bit_le)
- lsr r8, r10, 5
- sub r9, r11, r10
- retle r11
-
- lsl r8, 2
- add r12, r8
- andl r10, 31, COH
- breq 1f
-
- /* offset is not word-aligned. Handle the first (32 - r10) bits */
- ldswp.w r8, r12[0]
- sub r12, -4
- com r8
- lsr r8, r8, r10
- brne .L_found
-
- /* r9 = r9 - (32 - r10) = r9 + r10 - 32 */
- add r9, r10
- sub r9, 32
- retle r11
-
- /* Main loop. offset must be word-aligned */
-1: ldswp.w r8, r12[0]
- com r8
- brne .L_found
- sub r12, -4
- sub r9, 32
- brgt 1b
- retal r11