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-rw-r--r--arch/unicore32/lib/findbit.S97
1 files changed, 0 insertions, 97 deletions
diff --git a/arch/unicore32/lib/findbit.S b/arch/unicore32/lib/findbit.S
deleted file mode 100644
index 42f1282670d2..000000000000
--- a/arch/unicore32/lib/findbit.S
+++ /dev/null
@@ -1,97 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * linux/arch/unicore32/lib/findbit.S
- *
- * Code specific to PKUnity SoC and UniCore ISA
- *
- * Copyright (C) 2001-2010 GUAN Xue-tao
- */
-#include <linux/linkage.h>
-#include <asm/assembler.h>
- .text
-
-/*
- * Purpose : Find a 'zero' bit
- * Prototype: int find_first_zero_bit(void *addr, unsigned int maxbit);
- */
-ENTRY(find_first_zero_bit)
- cxor.a r1, #0
- beq 3f
- mov r2, #0
-1: ldb r3, [r0+], r2 >> #3
- xor.a r3, r3, #0xff @ invert bits
- bne .L_found @ any now set - found zero bit
- add r2, r2, #8 @ next bit pointer
-2: csub.a r2, r1 @ any more?
- bub 1b
-3: mov r0, r1 @ no free bits
- mov pc, lr
-ENDPROC(find_first_zero_bit)
-
-/*
- * Purpose : Find next 'zero' bit
- * Prototype: int find_next_zero_bit
- * (void *addr, unsigned int maxbit, int offset)
- */
-ENTRY(find_next_zero_bit)
- cxor.a r1, #0
- beq 3b
- and.a ip, r2, #7
- beq 1b @ If new byte, goto old routine
- ldb r3, [r0+], r2 >> #3
- xor r3, r3, #0xff @ now looking for a 1 bit
- mov.a r3, r3 >> ip @ shift off unused bits
- bne .L_found
- or r2, r2, #7 @ if zero, then no bits here
- add r2, r2, #1 @ align bit pointer
- b 2b @ loop for next bit
-ENDPROC(find_next_zero_bit)
-
-/*
- * Purpose : Find a 'one' bit
- * Prototype: int find_first_bit
- * (const unsigned long *addr, unsigned int maxbit);
- */
-ENTRY(find_first_bit)
- cxor.a r1, #0
- beq 3f
- mov r2, #0
-1: ldb r3, [r0+], r2 >> #3
- mov.a r3, r3
- bne .L_found @ any now set - found zero bit
- add r2, r2, #8 @ next bit pointer
-2: csub.a r2, r1 @ any more?
- bub 1b
-3: mov r0, r1 @ no free bits
- mov pc, lr
-ENDPROC(find_first_bit)
-
-/*
- * Purpose : Find next 'one' bit
- * Prototype: int find_next_zero_bit
- * (void *addr, unsigned int maxbit, int offset)
- */
-ENTRY(find_next_bit)
- cxor.a r1, #0
- beq 3b
- and.a ip, r2, #7
- beq 1b @ If new byte, goto old routine
- ldb r3, [r0+], r2 >> #3
- mov.a r3, r3 >> ip @ shift off unused bits
- bne .L_found
- or r2, r2, #7 @ if zero, then no bits here
- add r2, r2, #1 @ align bit pointer
- b 2b @ loop for next bit
-ENDPROC(find_next_bit)
-
-/*
- * One or more bits in the LSB of r3 are assumed to be set.
- */
-.L_found:
- rsub r1, r3, #0
- and r3, r3, r1
- cntlz r3, r3
- rsub r3, r3, #31
- add r0, r2, r3
- mov pc, lr
-