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-rw-r--r--arch/arm26/lib/csumpartial.S130
1 files changed, 0 insertions, 130 deletions
diff --git a/arch/arm26/lib/csumpartial.S b/arch/arm26/lib/csumpartial.S
deleted file mode 100644
index e53e7109e623..000000000000
--- a/arch/arm26/lib/csumpartial.S
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * linux/arch/arm26/lib/csumpartial.S
- *
- * Copyright (C) 1995-1998 Russell King
- *
- * 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>
-#include <asm/assembler.h>
-
- .text
-
-/*
- * Function: __u32 csum_partial(const char *src, int len, __u32 sum)
- * Params : r0 = buffer, r1 = len, r2 = checksum
- * Returns : r0 = new checksum
- */
-
-buf .req r0
-len .req r1
-sum .req r2
-td0 .req r3
-td1 .req r4 @ save before use
-td2 .req r5 @ save before use
-td3 .req lr
-
-.zero: mov r0, sum
- add sp, sp, #4
- ldr pc, [sp], #4
-
- /*
- * Handle 0 to 7 bytes, with any alignment of source and
- * destination pointers. Note that when we get here, C = 0
- */
-.less8: teq len, #0 @ check for zero count
- beq .zero
-
- /* we must have at least one byte. */
- tst buf, #1 @ odd address?
- ldrneb td0, [buf], #1
- subne len, len, #1
- adcnes sum, sum, td0, lsl #byte(1)
-
-.less4: tst len, #6
- beq .less8_byte
-
- /* we are now half-word aligned */
-
-.less8_wordlp:
-#if __LINUX_ARM_ARCH__ >= 4
- ldrh td0, [buf], #2
- sub len, len, #2
-#else
- ldrb td0, [buf], #1
- ldrb td3, [buf], #1
- sub len, len, #2
- orr td0, td0, td3, lsl #8
-#endif
- adcs sum, sum, td0
- tst len, #6
- bne .less8_wordlp
-
-.less8_byte: tst len, #1 @ odd number of bytes
- ldrneb td0, [buf], #1 @ include last byte
- adcnes sum, sum, td0, lsl #byte(0) @ update checksum
-
-.done: adc r0, sum, #0 @ collect up the last carry
- ldr td0, [sp], #4
- tst td0, #1 @ check buffer alignment
- movne td0, r0, lsl #8 @ rotate checksum by 8 bits
- orrne r0, td0, r0, lsr #24
- ldr pc, [sp], #4 @ return
-
-.not_aligned: tst buf, #1 @ odd address
- ldrneb td0, [buf], #1 @ make even
- subne len, len, #1
- adcnes sum, sum, td0, lsl #byte(1) @ update checksum
-
- tst buf, #2 @ 32-bit aligned?
-#if __LINUX_ARM_ARCH__ >= 4
- ldrneh td0, [buf], #2 @ make 32-bit aligned
- subne len, len, #2
-#else
- ldrneb td0, [buf], #1
- ldrneb ip, [buf], #1
- subne len, len, #2
- orrne td0, td0, ip, lsl #8
-#endif
- adcnes sum, sum, td0 @ update checksum
- mov pc, lr
-
-ENTRY(csum_partial)
- stmfd sp!, {buf, lr}
- cmp len, #8 @ Ensure that we have at least
- blo .less8 @ 8 bytes to copy.
-
- adds sum, sum, #0 @ C = 0
- tst buf, #3 @ Test destination alignment
- blne .not_aligned @ aligh destination, return here
-
-1: bics ip, len, #31
- beq 3f
-
- stmfd sp!, {r4 - r5}
-2: ldmia buf!, {td0, td1, td2, td3}
- adcs sum, sum, td0
- adcs sum, sum, td1
- adcs sum, sum, td2
- adcs sum, sum, td3
- ldmia buf!, {td0, td1, td2, td3}
- adcs sum, sum, td0
- adcs sum, sum, td1
- adcs sum, sum, td2
- adcs sum, sum, td3
- sub ip, ip, #32
- teq ip, #0
- bne 2b
- ldmfd sp!, {r4 - r5}
-
-3: tst len, #0x1c @ should not change C
- beq .less4
-
-4: ldr td0, [buf], #4
- sub len, len, #4
- adcs sum, sum, td0
- tst len, #0x1c
- bne 4b
- b .less4
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