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-rw-r--r--arch/score/lib/checksum.S255
1 files changed, 0 insertions, 255 deletions
diff --git a/arch/score/lib/checksum.S b/arch/score/lib/checksum.S
deleted file mode 100644
index 1141f2b4a501..000000000000
--- a/arch/score/lib/checksum.S
+++ /dev/null
@@ -1,255 +0,0 @@
-/*
- * arch/score/lib/csum_partial.S
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include <linux/linkage.h>
-
-#define ADDC(sum,reg) \
- add sum, sum, reg; \
- cmp.c reg, sum; \
- bleu 9f; \
- addi sum, 0x1; \
-9:
-
-#define CSUM_BIGCHUNK(src, offset, sum) \
- lw r8, [src, offset + 0x00]; \
- lw r9, [src, offset + 0x04]; \
- lw r10, [src, offset + 0x08]; \
- lw r11, [src, offset + 0x0c]; \
- ADDC(sum, r8); \
- ADDC(sum, r9); \
- ADDC(sum, r10); \
- ADDC(sum, r11); \
- lw r8, [src, offset + 0x10]; \
- lw r9, [src, offset + 0x14]; \
- lw r10, [src, offset + 0x18]; \
- lw r11, [src, offset + 0x1c]; \
- ADDC(sum, r8); \
- ADDC(sum, r9); \
- ADDC(sum, r10); \
- ADDC(sum, r11); \
-
-#define src r4
-#define dest r5
-#define sum r27
-
- .text
-/* unknown src alignment and < 8 bytes to go */
-small_csumcpy:
- mv r5, r10
- ldi r9, 0x0
- cmpi.c r25, 0x1
- beq pass_small_set_t7 /*already set, jump to pass_small_set_t7*/
- andri.c r25,r4 , 0x1 /*Is src 2 bytes aligned?*/
-
-pass_small_set_t7:
- beq aligned
- cmpi.c r5, 0x0
- beq fold
- lbu r9, [src]
- slli r9,r9, 0x8 /*Little endian*/
- ADDC(sum, r9)
- addi src, 0x1
- subi.c r5, 0x1
-
- /*len still a full word */
-aligned:
- andri.c r8, r5, 0x4 /*Len >= 4?*/
- beq len_less_4bytes
-
- /* Still a full word (4byte) to go,and the src is word aligned.*/
- andri.c r8, src, 0x3 /*src is 4bytes aligned, so use LW!!*/
- beq four_byte_aligned
- lhu r9, [src]
- addi src, 2
- ADDC(sum, r9)
- lhu r9, [src]
- addi src, 2
- ADDC(sum, r9)
- b len_less_4bytes
-
-four_byte_aligned: /* Len >=4 and four byte aligned */
- lw r9, [src]
- addi src, 4
- ADDC(sum, r9)
-
-len_less_4bytes: /* 2 byte aligned aligned and length<4B */
- andri.c r8, r5, 0x2
- beq len_less_2bytes
- lhu r9, [src]
- addi src, 0x2 /* src+=2 */
- ADDC(sum, r9)
-
-len_less_2bytes: /* len = 1 */
- andri.c r8, r5, 0x1
- beq fold /* less than 2 and not equal 1--> len=0 -> fold */
- lbu r9, [src]
-
-fold_ADDC:
- ADDC(sum, r9)
-fold:
- /* fold checksum */
- slli r26, sum, 16
- add sum, sum, r26
- cmp.c r26, sum
- srli sum, sum, 16
- bleu 1f /* if r26<=sum */
- addi sum, 0x1 /* r26>sum */
-1:
- /* odd buffer alignment? r25 was set in csum_partial */
- cmpi.c r25, 0x0
- beq 1f
- slli r26, sum, 8
- srli sum, sum, 8
- or sum, sum, r26
- andi sum, 0xffff
-1:
- .set optimize
- /* Add the passed partial csum. */
- ADDC(sum, r6)
- mv r4, sum
- br r3
- .set volatile
-
- .align 5
-ENTRY(csum_partial)
- ldi sum, 0
- ldi r25, 0
- mv r10, r5
- cmpi.c r5, 0x8
- blt small_csumcpy /* < 8(signed) bytes to copy */
- cmpi.c r5, 0x0
- beq out
- andri.c r25, src, 0x1 /* odd buffer? */
-
- beq word_align
-hword_align: /* 1 byte */
- lbu r8, [src]
- subi r5, 0x1
- slli r8, r8, 8
- ADDC(sum, r8)
- addi src, 0x1
-
-word_align: /* 2 bytes */
- andri.c r8, src, 0x2 /* 4bytes(dword)_aligned? */
- beq dword_align /* not, maybe dword_align */
- lhu r8, [src]
- subi r5, 0x2
- ADDC(sum, r8)
- addi src, 0x2
-
-dword_align: /* 4bytes */
- mv r26, r5 /* maybe useless when len >=56 */
- ldi r8, 56
- cmp.c r8, r5
- bgtu do_end_words /* if a1(len)<t0(56) ,unsigned */
- andri.c r26, src, 0x4
- beq qword_align
- lw r8, [src]
- subi r5, 0x4
- ADDC(sum, r8)
- addi src, 0x4
-
-qword_align: /* 8 bytes */
- andri.c r26, src, 0x8
- beq oword_align
- lw r8, [src, 0x0]
- lw r9, [src, 0x4]
- subi r5, 0x8 /* len-=0x8 */
- ADDC(sum, r8)
- ADDC(sum, r9)
- addi src, 0x8
-
-oword_align: /* 16bytes */
- andri.c r26, src, 0x10
- beq begin_movement
- lw r10, [src, 0x08]
- lw r11, [src, 0x0c]
- lw r8, [src, 0x00]
- lw r9, [src, 0x04]
- ADDC(sum, r10)
- ADDC(sum, r11)
- ADDC(sum, r8)
- ADDC(sum, r9)
- subi r5, 0x10
- addi src, 0x10
-
-begin_movement:
- srli.c r26, r5, 0x7 /* len>=128? */
- beq 1f /* len<128 */
-
-/* r26 is the result that computed in oword_align */
-move_128bytes:
- CSUM_BIGCHUNK(src, 0x00, sum)
- CSUM_BIGCHUNK(src, 0x20, sum)
- CSUM_BIGCHUNK(src, 0x40, sum)
- CSUM_BIGCHUNK(src, 0x60, sum)
- subi.c r26, 0x01 /* r26 equals len/128 */
- addi src, 0x80
- bne move_128bytes
-
-1: /* len<128,we process 64byte here */
- andri.c r10, r5, 0x40
- beq 1f
-
-move_64bytes:
- CSUM_BIGCHUNK(src, 0x00, sum)
- CSUM_BIGCHUNK(src, 0x20, sum)
- addi src, 0x40
-
-1: /* len<64 */
- andri r26, r5, 0x1c /* 0x1c=28 */
- andri.c r10, r5, 0x20
- beq do_end_words /* decided by andri */
-
-move_32bytes:
- CSUM_BIGCHUNK(src, 0x00, sum)
- andri r26, r5, 0x1c
- addri src, src, 0x20
-
-do_end_words: /* len<32 */
- /* r26 was set already in dword_align */
- cmpi.c r26, 0x0
- beq maybe_end_cruft /* len<28 or len<56 */
- srli r26, r26, 0x2
-
-end_words:
- lw r8, [src]
- subi.c r26, 0x1 /* unit is 4 byte */
- ADDC(sum, r8)
- addi src, 0x4
- cmpi.c r26, 0x0
- bne end_words /* r26!=0 */
-
-maybe_end_cruft: /* len<4 */
- andri r10, r5, 0x3
-
-small_memcpy:
- mv r5, r10
- j small_csumcpy
-
-out:
- mv r4, sum
- br r3
-
-END(csum_partial)