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[MIPS] Unify csum_partial.S
The 32-bit version and 64-bit version are almost equal. Unify them. This makes further improvements (for example, copying with parallel, supporting PREFETCH, etc.) easier. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Atsushi Nemoto
Ralf Baechle
parent
03dbd2e0b1
commit
0bcdda0f3a
@ -2,7 +2,7 @@
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# Makefile for MIPS-specific library files..
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#
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lib-y += csum_partial.o memset.o watch.o
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lib-y += memset.o watch.o
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obj-$(CONFIG_CPU_MIPS32) += dump_tlb.o
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obj-$(CONFIG_CPU_MIPS64) += dump_tlb.o
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@ -1,240 +0,0 @@
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1998 Ralf Baechle
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*/
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#include <asm/asm.h>
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#include <asm/regdef.h>
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#define ADDC(sum,reg) \
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addu sum, reg; \
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sltu v1, sum, reg; \
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addu sum, v1
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#define CSUM_BIGCHUNK(src, offset, sum, t0, t1, t2, t3) \
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lw t0, (offset + 0x00)(src); \
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lw t1, (offset + 0x04)(src); \
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lw t2, (offset + 0x08)(src); \
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lw t3, (offset + 0x0c)(src); \
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ADDC(sum, t0); \
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ADDC(sum, t1); \
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ADDC(sum, t2); \
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ADDC(sum, t3); \
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lw t0, (offset + 0x10)(src); \
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lw t1, (offset + 0x14)(src); \
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lw t2, (offset + 0x18)(src); \
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lw t3, (offset + 0x1c)(src); \
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ADDC(sum, t0); \
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ADDC(sum, t1); \
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ADDC(sum, t2); \
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ADDC(sum, t3); \
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/*
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* a0: source address
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* a1: length of the area to checksum
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* a2: partial checksum
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*/
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#define src a0
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#define dest a1
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#define sum v0
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.text
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.set noreorder
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/* unknown src alignment and < 8 bytes to go */
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small_csumcpy:
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move a1, t2
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andi t0, a1, 4
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beqz t0, 1f
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andi t0, a1, 2
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/* Still a full word to go */
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ulw t1, (src)
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addiu src, 4
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ADDC(sum, t1)
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1: move t1, zero
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beqz t0, 1f
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andi t0, a1, 1
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/* Still a halfword to go */
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ulhu t1, (src)
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addiu src, 2
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1: beqz t0, 1f
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sll t1, t1, 16
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lbu t2, (src)
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nop
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#ifdef __MIPSEB__
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sll t2, t2, 8
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#endif
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or t1, t2
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1: ADDC(sum, t1)
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/* fold checksum */
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sll v1, sum, 16
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addu sum, v1
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sltu v1, sum, v1
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srl sum, sum, 16
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addu sum, v1
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/* odd buffer alignment? */
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beqz t7, 1f
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nop
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sll v1, sum, 8
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srl sum, sum, 8
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or sum, v1
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andi sum, 0xffff
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1:
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.set reorder
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/* Add the passed partial csum. */
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ADDC(sum, a2)
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jr ra
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.set noreorder
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/* ------------------------------------------------------------------------- */
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.align 5
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LEAF(csum_partial)
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move sum, zero
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move t7, zero
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sltiu t8, a1, 0x8
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bnez t8, small_csumcpy /* < 8 bytes to copy */
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move t2, a1
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beqz a1, out
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andi t7, src, 0x1 /* odd buffer? */
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hword_align:
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beqz t7, word_align
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andi t8, src, 0x2
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lbu t0, (src)
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subu a1, a1, 0x1
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#ifdef __MIPSEL__
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sll t0, t0, 8
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#endif
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ADDC(sum, t0)
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addu src, src, 0x1
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andi t8, src, 0x2
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word_align:
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beqz t8, dword_align
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sltiu t8, a1, 56
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lhu t0, (src)
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subu a1, a1, 0x2
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ADDC(sum, t0)
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sltiu t8, a1, 56
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addu src, src, 0x2
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dword_align:
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bnez t8, do_end_words
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move t8, a1
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andi t8, src, 0x4
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beqz t8, qword_align
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andi t8, src, 0x8
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lw t0, 0x00(src)
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subu a1, a1, 0x4
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ADDC(sum, t0)
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addu src, src, 0x4
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andi t8, src, 0x8
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qword_align:
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beqz t8, oword_align
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andi t8, src, 0x10
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lw t0, 0x00(src)
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lw t1, 0x04(src)
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subu a1, a1, 0x8
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ADDC(sum, t0)
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ADDC(sum, t1)
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addu src, src, 0x8
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andi t8, src, 0x10
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oword_align:
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beqz t8, begin_movement
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srl t8, a1, 0x7
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lw t3, 0x08(src)
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lw t4, 0x0c(src)
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lw t0, 0x00(src)
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lw t1, 0x04(src)
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ADDC(sum, t3)
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ADDC(sum, t4)
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ADDC(sum, t0)
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ADDC(sum, t1)
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subu a1, a1, 0x10
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addu src, src, 0x10
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srl t8, a1, 0x7
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begin_movement:
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beqz t8, 1f
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andi t2, a1, 0x40
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move_128bytes:
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CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4)
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CSUM_BIGCHUNK(src, 0x20, sum, t0, t1, t3, t4)
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CSUM_BIGCHUNK(src, 0x40, sum, t0, t1, t3, t4)
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CSUM_BIGCHUNK(src, 0x60, sum, t0, t1, t3, t4)
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subu t8, t8, 0x01
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bnez t8, move_128bytes
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addu src, src, 0x80
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1:
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beqz t2, 1f
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andi t2, a1, 0x20
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move_64bytes:
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CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4)
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CSUM_BIGCHUNK(src, 0x20, sum, t0, t1, t3, t4)
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addu src, src, 0x40
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1:
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beqz t2, do_end_words
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andi t8, a1, 0x1c
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move_32bytes:
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CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4)
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andi t8, a1, 0x1c
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addu src, src, 0x20
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do_end_words:
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beqz t8, maybe_end_cruft
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srl t8, t8, 0x2
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end_words:
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lw t0, (src)
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subu t8, t8, 0x1
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ADDC(sum, t0)
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bnez t8, end_words
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addu src, src, 0x4
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maybe_end_cruft:
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andi t2, a1, 0x3
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small_memcpy:
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j small_csumcpy; move a1, t2
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beqz t2, out
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move a1, t2
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end_bytes:
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lb t0, (src)
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subu a1, a1, 0x1
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bnez a2, end_bytes
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addu src, src, 0x1
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out:
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jr ra
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move v0, sum
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END(csum_partial)
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@ -2,7 +2,7 @@
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# Makefile for MIPS-specific library files..
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#
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lib-y += csum_partial.o memset.o watch.o
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lib-y += memset.o watch.o
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obj-$(CONFIG_CPU_MIPS32) += dump_tlb.o
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obj-$(CONFIG_CPU_MIPS64) += dump_tlb.o
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@ -1,242 +0,0 @@
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Quick'n'dirty IP checksum ...
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*
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* Copyright (C) 1998, 1999 Ralf Baechle
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* Copyright (C) 1999 Silicon Graphics, Inc.
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*/
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#include <asm/asm.h>
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#include <asm/regdef.h>
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#define ADDC(sum,reg) \
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addu sum, reg; \
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sltu v1, sum, reg; \
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addu sum, v1
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#define CSUM_BIGCHUNK(src, offset, sum, t0, t1, t2, t3) \
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lw t0, (offset + 0x00)(src); \
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lw t1, (offset + 0x04)(src); \
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lw t2, (offset + 0x08)(src); \
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lw t3, (offset + 0x0c)(src); \
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ADDC(sum, t0); \
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ADDC(sum, t1); \
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ADDC(sum, t2); \
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ADDC(sum, t3); \
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lw t0, (offset + 0x10)(src); \
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lw t1, (offset + 0x14)(src); \
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lw t2, (offset + 0x18)(src); \
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lw t3, (offset + 0x1c)(src); \
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ADDC(sum, t0); \
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ADDC(sum, t1); \
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ADDC(sum, t2); \
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ADDC(sum, t3); \
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/*
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* a0: source address
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* a1: length of the area to checksum
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* a2: partial checksum
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*/
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#define src a0
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#define sum v0
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.text
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.set noreorder
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/* unknown src alignment and < 8 bytes to go */
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small_csumcpy:
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move a1, ta2
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andi ta0, a1, 4
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beqz ta0, 1f
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andi ta0, a1, 2
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/* Still a full word to go */
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ulw ta1, (src)
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daddiu src, 4
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ADDC(sum, ta1)
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1: move ta1, zero
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beqz ta0, 1f
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andi ta0, a1, 1
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/* Still a halfword to go */
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ulhu ta1, (src)
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daddiu src, 2
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1: beqz ta0, 1f
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sll ta1, ta1, 16
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lbu ta2, (src)
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nop
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#ifdef __MIPSEB__
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sll ta2, ta2, 8
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#endif
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or ta1, ta2
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1: ADDC(sum, ta1)
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/* fold checksum */
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sll v1, sum, 16
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addu sum, v1
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sltu v1, sum, v1
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srl sum, sum, 16
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addu sum, v1
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/* odd buffer alignment? */
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beqz t3, 1f
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nop
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sll v1, sum, 8
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srl sum, sum, 8
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or sum, v1
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andi sum, 0xffff
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1:
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.set reorder
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/* Add the passed partial csum. */
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ADDC(sum, a2)
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jr ra
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.set noreorder
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/* ------------------------------------------------------------------------- */
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.align 5
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LEAF(csum_partial)
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move sum, zero
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move t3, zero
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sltiu t8, a1, 0x8
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bnez t8, small_csumcpy /* < 8 bytes to copy */
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move ta2, a1
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beqz a1, out
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andi t3, src, 0x1 /* odd buffer? */
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hword_align:
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beqz t3, word_align
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andi t8, src, 0x2
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lbu ta0, (src)
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dsubu a1, a1, 0x1
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#ifdef __MIPSEL__
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sll ta0, ta0, 8
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#endif
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ADDC(sum, ta0)
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daddu src, src, 0x1
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andi t8, src, 0x2
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word_align:
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beqz t8, dword_align
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sltiu t8, a1, 56
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lhu ta0, (src)
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dsubu a1, a1, 0x2
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ADDC(sum, ta0)
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sltiu t8, a1, 56
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daddu src, src, 0x2
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dword_align:
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bnez t8, do_end_words
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move t8, a1
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andi t8, src, 0x4
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beqz t8, qword_align
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andi t8, src, 0x8
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lw ta0, 0x00(src)
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dsubu a1, a1, 0x4
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ADDC(sum, ta0)
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daddu src, src, 0x4
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andi t8, src, 0x8
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qword_align:
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beqz t8, oword_align
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andi t8, src, 0x10
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lw ta0, 0x00(src)
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lw ta1, 0x04(src)
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dsubu a1, a1, 0x8
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ADDC(sum, ta0)
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ADDC(sum, ta1)
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daddu src, src, 0x8
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andi t8, src, 0x10
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oword_align:
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beqz t8, begin_movement
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dsrl t8, a1, 0x7
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lw ta3, 0x08(src)
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lw t0, 0x0c(src)
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lw ta0, 0x00(src)
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lw ta1, 0x04(src)
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ADDC(sum, ta3)
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ADDC(sum, t0)
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ADDC(sum, ta0)
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ADDC(sum, ta1)
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dsubu a1, a1, 0x10
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daddu src, src, 0x10
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dsrl t8, a1, 0x7
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begin_movement:
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beqz t8, 1f
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andi ta2, a1, 0x40
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move_128bytes:
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CSUM_BIGCHUNK(src, 0x00, sum, ta0, ta1, ta3, t0)
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CSUM_BIGCHUNK(src, 0x20, sum, ta0, ta1, ta3, t0)
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CSUM_BIGCHUNK(src, 0x40, sum, ta0, ta1, ta3, t0)
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CSUM_BIGCHUNK(src, 0x60, sum, ta0, ta1, ta3, t0)
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dsubu t8, t8, 0x01
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bnez t8, move_128bytes
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daddu src, src, 0x80
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1:
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beqz ta2, 1f
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andi ta2, a1, 0x20
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move_64bytes:
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CSUM_BIGCHUNK(src, 0x00, sum, ta0, ta1, ta3, t0)
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CSUM_BIGCHUNK(src, 0x20, sum, ta0, ta1, ta3, t0)
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daddu src, src, 0x40
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1:
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beqz ta2, do_end_words
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andi t8, a1, 0x1c
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move_32bytes:
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CSUM_BIGCHUNK(src, 0x00, sum, ta0, ta1, ta3, t0)
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andi t8, a1, 0x1c
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daddu src, src, 0x20
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do_end_words:
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beqz t8, maybe_end_cruft
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dsrl t8, t8, 0x2
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end_words:
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lw ta0, (src)
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dsubu t8, t8, 0x1
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ADDC(sum, ta0)
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bnez t8, end_words
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daddu src, src, 0x4
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maybe_end_cruft:
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andi ta2, a1, 0x3
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small_memcpy:
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j small_csumcpy; move a1, ta2 /* XXX ??? */
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beqz t2, out
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move a1, ta2
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end_bytes:
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lb ta0, (src)
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dsubu a1, a1, 0x1
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||||
bnez a2, end_bytes
|
||||
daddu src, src, 0x1
|
||||
|
||||
out:
|
||||
jr ra
|
||||
move v0, sum
|
||||
END(csum_partial)
|
||||
@ -2,8 +2,8 @@
|
||||
# Makefile for MIPS-specific library files..
|
||||
#
|
||||
|
||||
lib-y += csum_partial_copy.o memcpy.o promlib.o strlen_user.o strncpy_user.o \
|
||||
strnlen_user.o uncached.o
|
||||
lib-y += csum_partial.o csum_partial_copy.o memcpy.o promlib.o \
|
||||
strlen_user.o strncpy_user.o strnlen_user.o uncached.o
|
||||
|
||||
obj-y += iomap.o
|
||||
|
||||
|
||||
258
arch/mips/lib/csum_partial.S
Normal file
258
arch/mips/lib/csum_partial.S
Normal file
@ -0,0 +1,258 @@
|
||||
/*
|
||||
* This file is subject to the terms and conditions of the GNU General Public
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Quick'n'dirty IP checksum ...
|
||||
*
|
||||
* Copyright (C) 1998, 1999 Ralf Baechle
|
||||
* Copyright (C) 1999 Silicon Graphics, Inc.
|
||||
*/
|
||||
#include <asm/asm.h>
|
||||
#include <asm/regdef.h>
|
||||
|
||||
#ifdef CONFIG_64BIT
|
||||
#define T0 ta0
|
||||
#define T1 ta1
|
||||
#define T2 ta2
|
||||
#define T3 ta3
|
||||
#define T4 t0
|
||||
#define T7 t3
|
||||
#else
|
||||
#define T0 t0
|
||||
#define T1 t1
|
||||
#define T2 t2
|
||||
#define T3 t3
|
||||
#define T4 t4
|
||||
#define T7 t7
|
||||
#endif
|
||||
|
||||
#define ADDC(sum,reg) \
|
||||
addu sum, reg; \
|
||||
sltu v1, sum, reg; \
|
||||
addu sum, v1
|
||||
|
||||
#define CSUM_BIGCHUNK(src, offset, sum, _t0, _t1, _t2, _t3) \
|
||||
lw _t0, (offset + 0x00)(src); \
|
||||
lw _t1, (offset + 0x04)(src); \
|
||||
lw _t2, (offset + 0x08)(src); \
|
||||
lw _t3, (offset + 0x0c)(src); \
|
||||
ADDC(sum, _t0); \
|
||||
ADDC(sum, _t1); \
|
||||
ADDC(sum, _t2); \
|
||||
ADDC(sum, _t3); \
|
||||
lw _t0, (offset + 0x10)(src); \
|
||||
lw _t1, (offset + 0x14)(src); \
|
||||
lw _t2, (offset + 0x18)(src); \
|
||||
lw _t3, (offset + 0x1c)(src); \
|
||||
ADDC(sum, _t0); \
|
||||
ADDC(sum, _t1); \
|
||||
ADDC(sum, _t2); \
|
||||
ADDC(sum, _t3); \
|
||||
|
||||
/*
|
||||
* a0: source address
|
||||
* a1: length of the area to checksum
|
||||
* a2: partial checksum
|
||||
*/
|
||||
|
||||
#define src a0
|
||||
#define sum v0
|
||||
|
||||
.text
|
||||
.set noreorder
|
||||
|
||||
/* unknown src alignment and < 8 bytes to go */
|
||||
small_csumcpy:
|
||||
move a1, T2
|
||||
|
||||
andi T0, a1, 4
|
||||
beqz T0, 1f
|
||||
andi T0, a1, 2
|
||||
|
||||
/* Still a full word to go */
|
||||
ulw T1, (src)
|
||||
PTR_ADDIU src, 4
|
||||
ADDC(sum, T1)
|
||||
|
||||
1: move T1, zero
|
||||
beqz T0, 1f
|
||||
andi T0, a1, 1
|
||||
|
||||
/* Still a halfword to go */
|
||||
ulhu T1, (src)
|
||||
PTR_ADDIU src, 2
|
||||
|
||||
1: beqz T0, 1f
|
||||
sll T1, T1, 16
|
||||
|
||||
lbu T2, (src)
|
||||
nop
|
||||
|
||||
#ifdef __MIPSEB__
|
||||
sll T2, T2, 8
|
||||
#endif
|
||||
or T1, T2
|
||||
|
||||
1: ADDC(sum, T1)
|
||||
|
||||
/* fold checksum */
|
||||
sll v1, sum, 16
|
||||
addu sum, v1
|
||||
sltu v1, sum, v1
|
||||
srl sum, sum, 16
|
||||
addu sum, v1
|
||||
|
||||
/* odd buffer alignment? */
|
||||
beqz T7, 1f
|
||||
nop
|
||||
sll v1, sum, 8
|
||||
srl sum, sum, 8
|
||||
or sum, v1
|
||||
andi sum, 0xffff
|
||||
1:
|
||||
.set reorder
|
||||
/* Add the passed partial csum. */
|
||||
ADDC(sum, a2)
|
||||
jr ra
|
||||
.set noreorder
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
.align 5
|
||||
LEAF(csum_partial)
|
||||
move sum, zero
|
||||
move T7, zero
|
||||
|
||||
sltiu t8, a1, 0x8
|
||||
bnez t8, small_csumcpy /* < 8 bytes to copy */
|
||||
move T2, a1
|
||||
|
||||
beqz a1, out
|
||||
andi T7, src, 0x1 /* odd buffer? */
|
||||
|
||||
hword_align:
|
||||
beqz T7, word_align
|
||||
andi t8, src, 0x2
|
||||
|
||||
lbu T0, (src)
|
||||
LONG_SUBU a1, a1, 0x1
|
||||
#ifdef __MIPSEL__
|
||||
sll T0, T0, 8
|
||||
#endif
|
||||
ADDC(sum, T0)
|
||||
PTR_ADDU src, src, 0x1
|
||||
andi t8, src, 0x2
|
||||
|
||||
word_align:
|
||||
beqz t8, dword_align
|
||||
sltiu t8, a1, 56
|
||||
|
||||
lhu T0, (src)
|
||||
LONG_SUBU a1, a1, 0x2
|
||||
ADDC(sum, T0)
|
||||
sltiu t8, a1, 56
|
||||
PTR_ADDU src, src, 0x2
|
||||
|
||||
dword_align:
|
||||
bnez t8, do_end_words
|
||||
move t8, a1
|
||||
|
||||
andi t8, src, 0x4
|
||||
beqz t8, qword_align
|
||||
andi t8, src, 0x8
|
||||
|
||||
lw T0, 0x00(src)
|
||||
LONG_SUBU a1, a1, 0x4
|
||||
ADDC(sum, T0)
|
||||
PTR_ADDU src, src, 0x4
|
||||
andi t8, src, 0x8
|
||||
|
||||
qword_align:
|
||||
beqz t8, oword_align
|
||||
andi t8, src, 0x10
|
||||
|
||||
lw T0, 0x00(src)
|
||||
lw T1, 0x04(src)
|
||||
LONG_SUBU a1, a1, 0x8
|
||||
ADDC(sum, T0)
|
||||
ADDC(sum, T1)
|
||||
PTR_ADDU src, src, 0x8
|
||||
andi t8, src, 0x10
|
||||
|
||||
oword_align:
|
||||
beqz t8, begin_movement
|
||||
LONG_SRL t8, a1, 0x7
|
||||
|
||||
lw T3, 0x08(src)
|
||||
lw T4, 0x0c(src)
|
||||
lw T0, 0x00(src)
|
||||
lw T1, 0x04(src)
|
||||
ADDC(sum, T3)
|
||||
ADDC(sum, T4)
|
||||
ADDC(sum, T0)
|
||||
ADDC(sum, T1)
|
||||
LONG_SUBU a1, a1, 0x10
|
||||
PTR_ADDU src, src, 0x10
|
||||
LONG_SRL t8, a1, 0x7
|
||||
|
||||
begin_movement:
|
||||
beqz t8, 1f
|
||||
andi T2, a1, 0x40
|
||||
|
||||
move_128bytes:
|
||||
CSUM_BIGCHUNK(src, 0x00, sum, T0, T1, T3, T4)
|
||||
CSUM_BIGCHUNK(src, 0x20, sum, T0, T1, T3, T4)
|
||||
CSUM_BIGCHUNK(src, 0x40, sum, T0, T1, T3, T4)
|
||||
CSUM_BIGCHUNK(src, 0x60, sum, T0, T1, T3, T4)
|
||||
LONG_SUBU t8, t8, 0x01
|
||||
bnez t8, move_128bytes
|
||||
PTR_ADDU src, src, 0x80
|
||||
|
||||
1:
|
||||
beqz T2, 1f
|
||||
andi T2, a1, 0x20
|
||||
|
||||
move_64bytes:
|
||||
CSUM_BIGCHUNK(src, 0x00, sum, T0, T1, T3, T4)
|
||||
CSUM_BIGCHUNK(src, 0x20, sum, T0, T1, T3, T4)
|
||||
PTR_ADDU src, src, 0x40
|
||||
|
||||
1:
|
||||
beqz T2, do_end_words
|
||||
andi t8, a1, 0x1c
|
||||
|
||||
move_32bytes:
|
||||
CSUM_BIGCHUNK(src, 0x00, sum, T0, T1, T3, T4)
|
||||
andi t8, a1, 0x1c
|
||||
PTR_ADDU src, src, 0x20
|
||||
|
||||
do_end_words:
|
||||
beqz t8, maybe_end_cruft
|
||||
LONG_SRL t8, t8, 0x2
|
||||
|
||||
end_words:
|
||||
lw T0, (src)
|
||||
LONG_SUBU t8, t8, 0x1
|
||||
ADDC(sum, T0)
|
||||
bnez t8, end_words
|
||||
PTR_ADDU src, src, 0x4
|
||||
|
||||
maybe_end_cruft:
|
||||
andi T2, a1, 0x3
|
||||
|
||||
small_memcpy:
|
||||
j small_csumcpy; move a1, T2 /* XXX ??? */
|
||||
beqz t2, out
|
||||
move a1, T2
|
||||
|
||||
end_bytes:
|
||||
lb T0, (src)
|
||||
LONG_SUBU a1, a1, 0x1
|
||||
bnez a2, end_bytes
|
||||
PTR_ADDU src, src, 0x1
|
||||
|
||||
out:
|
||||
jr ra
|
||||
move v0, sum
|
||||
END(csum_partial)
|
||||
Loading…
x
Reference in New Issue
Block a user