/* * linux/arch/arm/lib/io-readsl.S * * Copyright (C) 1995-2000 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 #include ENTRY(__raw_readsl) teq r2, #0 @ do we have to check for the zero len? reteq lr ands ip, r1, #3 bne 3f subs r2, r2, #4 bmi 2f stmfd sp!, {r4, lr} 1: ldr r3, [r0, #0] ldr r4, [r0, #0] ldr ip, [r0, #0] ldr lr, [r0, #0] subs r2, r2, #4 stmia r1!, {r3, r4, ip, lr} bpl 1b ldmfd sp!, {r4, lr} 2: movs r2, r2, lsl #31 ldrcs r3, [r0, #0] ldrcs ip, [r0, #0] stmcsia r1!, {r3, ip} ldrne r3, [r0, #0] strne r3, [r1, #0] ret lr 3: ldr r3, [r0] cmp ip, #2 mov ip, r3, get_byte_0 strb ip, [r1], #1 bgt 6f mov ip, r3, get_byte_1 strb ip, [r1], #1 beq 5f mov ip, r3, get_byte_2 strb ip, [r1], #1 4: subs r2, r2, #1 mov ip, r3, lspull #24 ldrne r3, [r0] orrne ip, ip, r3, lspush #8 strne ip, [r1], #4 bne 4b b 8f 5: subs r2, r2, #1 mov ip, r3, lspull #16 ldrne r3, [r0] orrne ip, ip, r3, lspush #16 strne ip, [r1], #4 bne 5b b 7f 6: subs r2, r2, #1 mov ip, r3, lspull #8 ldrne r3, [r0] orrne ip, ip, r3, lspush #24 strne ip, [r1], #4 bne 6b mov r3, ip, get_byte_2 strb r3, [r1, #2] 7: mov r3, ip, get_byte_1 strb r3, [r1, #1] 8: mov r3, ip, get_byte_0 strb r3, [r1, #0] ret lr ENDPROC(__raw_readsl) a>logtreecommitdiff
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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
commite7aa8c2eb11ba69b1b69099c3c7bd6be3087b0ba (patch)
treef63906f41699c8e38af9d12b063e2ceab0286ef2 /kernel/memremap.c
parente34bac726d27056081d0250c0e173e4b155aa340 (diff)
parent868c97a846a73e937d835b09b8c885a69df50ec8 (diff)
Merge tag 'docs-4.10' of git://git.lwn.net/linuxHEADmaster
Pull documentation update from Jonathan Corbet: "These are the documentation changes for 4.10. It's another busy cycle for the docs tree, as the sphinx conversion continues. Highlights include: - Further work on PDF output, which remains a bit of a pain but should be more solid now. - Five more DocBook template files converted to Sphinx. Only 27 to go... Lots of plain-text files have also been converted and integrated. - Images in binary formats have been replaced with more source-friendly versions. - Various bits of organizational work, including the renaming of various files discussed at the kernel summit. - New documentation for the device_link mechanism. ... and, of course, lots of typo fixes and small updates" * tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits) dma-buf: Extract dma-buf.rst Update Documentation/00-INDEX docs: 00-INDEX: document directories/files with no docs docs: 00-INDEX: remove non-existing entries docs: 00-INDEX: add missing entries for documentation files/dirs docs: 00-INDEX: consolidate process/ and admin-guide/ description scripts: add a script to check if Documentation/00-INDEX is sane Docs: change sh -> awk in REPORTING-BUGS Documentation/core-api/device_link: Add initial documentation core-api: remove an unexpected unident ppc/idle: Add documentation for powersave=off Doc: Correct typo, "Introdution" => "Introduction" Documentation/atomic_ops.txt: convert to ReST markup Documentation/local_ops.txt: convert to ReST markup Documentation/assoc_array.txt: convert to ReST markup docs-rst: parse-headers.pl: cleanup the documentation docs-rst: fix media cleandocs target docs-rst: media/Makefile: reorganize the rules docs-rst: media: build SVG from graphviz files docs-rst: replace bayer.png by a SVG image ...
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