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Android is one of the many distributions that currently work on the Openmoko phones. You can compare a distribution with an Operating System on normal computers. It gives the phone all the software needed for operating. For more information about the different flavors, see distributions.

Updates

20081202 Koolu.com 在Koolu GIT Koolu GIT (Press Release已释出给FreeRunner使用的 Android 源码。

20081120 Koolu.com 推动销售搭载 Android的Openmoko Freerunner 。如提供现有的FreeRunner 下载可搭载的Android。直到 December 2008。

20081104 第一个可以在FreeRunner上执行的 Android-image已经成功的被 Sean McNeil编译出来! - sms 及通话可以使用,wifi 及蓝芽则否。news-source

20081029 User:Cfriedt Benno 修改了Android's build system,因此可以放置JFFS2 image,而不是YAFFS。不像是JFFS2,只可以mount 到只读的情况下,要挂载 YAFFS映像档在它被写入 flash 后才有可能使用。(it complains about the block device being of type '1' and not 'NAND'). JFFS2 仍然有标准的 Openmoko image 格式的优点 (请参考烧制映像档到FreeRunner 或烧制映像档到Neo 1973)。

20081023 User:Bricode 追踪包含ARMv5规格的 Android source tree状态,我建立了一个表格表示它会包含什么内容,及patche档的状态。它可以在 http://spreadsheets.google.com/pub?key=pzDEXnU19gkeTjpD28t-7fw 这个网址找到。

20081022 User:Cfriedt 可以在移除了v5TE指令下 ,没有错误的'trivially' 为ARMv4T编译 Android source code。虽然它不预期它可以被执行,至少我针对 build/core/combo/arm-linux.mk做了一些小小的取代。关于此点,我可以继续像执行v4T指令顺序般的,重新执行 v5TE 指令。(或者,重新执行整个 hand-optimized v4T 指令组合)。

20081021 User:Cfriedt Android -> FreeRunner ,在我的部落格上有讨论。

20081021 Google 释出Apache free 及 open-source手机下,大部份的source code 、 license, 部份被涵盖在现有的授权(licenses)下,如 Linux kernel 是属于 GPLv2授权。

200810?? Koolu.com 宣布他们将会 销售搭载Android的Openmoko Freerunner ,这个计划会在2008年11月开始,并且提供现有的FreeRunner用户 免费下载可搭载在Freerunner上的Android 。知名的 open-source 爱好者Jon "maddog" Hall 是Koolu的CTO及代表。

简介

本网页撰写的目地在于将Android OS 移植到 Neo 1973 及 Neo FreeRunner 手机上。Android OS 于2008年10月21日公开的发布。下列的信息,可以提供您暸解在 Neo 1973及 FreeRunner 移植工作目前的运作情形及现状。

目标

有系统化的在Android codebase下使用提供给 ARMv4T 的patch檔。
提供在Android codebase在下Neo1973 与 Neo FreeRunner hardware-dependent patches 文件, 这项任务已经被 Openmoko 工程师完成,在不强迫变更 Android-specific upstream下。
在Distributions网页中,提供有用的Android 档案系统及kernel。

使用现有的二进制文件安装

详尽的在FreeRunner上安装Android (使用 Sean McNeil的kernel及rootfs 套件,及 Qi bootloader) ,何以在http://www.copiesofcopies.org/webl/?p=34此网址找到。

早期目标

就如同 Ben Leslie 在 blog 中所提到的,在 source code释出之前,Android 被设计为使用ARMv5TE 架构instruction set architecture (ISA),允许 DSP 扩充的指令。相较于 ARMv5TE ISA, the Neo1973 及 FreeRunner 电话听筒都着重在arm920t core,并可以应用到 ARMv4T ISA。

在源码开放之前,kernel trap handlers 被用来 '模拟' ARMv5TE ISA。虽然这个结果在不同的案例下运作,trapping 是较花成本及效能的一种结果。甚至于,在没有明确的暸解哪个状况是被不同的指令所设定的情兄下,如Thumb Mode execution,这个结果成为没有定论。

目前的状态

随着 Android释出 source code,Open Source社群不再受限于使用binary-only 产品。The Open Handset Alliance (OHA)已经让他们的source code 成为能让大家致富及受益的产品。

目前,porting 以不同的循环模式运做。Patches需要透过 official Android channels提交。

Koolu,Freerunner 的经销商, 在http://git.koolu.com释出了他们搭载FreeRunner的源码。参考 #Building the Koolu Android Source下的说明可以暸解到如何制作供给Freerunner使用的Android image。

为了要追踪Android source tree的哪个部份包含了特定的 ARMv5 程序,我制作了包含patches状态的表格。这个表格可以在 http://spreadsheets.google.com/pub?key=pzDEXnU19gkeTjpD28t-7fw 找到。User:Bricode

Sean McNeil 指出他可以在FreeRunner上执行包含通话功能的 Android。

Ben Leslie 也在android-porting list上指出他可以在Neo 1973 show出他的Android logo。

建立Koolu Android Source

参考Setting up your machine 中的Google build 说明,进行设定。
安装 repo 并下载源码,你可以在 http://trac.koolu.org/找到它的文件。
在完成build后,你可以藉由的讯息编辑及执行McNeil的 scripts,将root file system 放在一起。第一个 script (cp_android_OS) 用来复制最新的built files到 staging area。第二个(mkjffs2) 则从staging area会制作一个jffs2 image。请确定在二个档案中编辑你的路径。或者,你可以使用以下的script
上面执行的结果是androidfs.jffs2的档案,它可以被烧进你的Freerunner。

制作jffs2 image

你可以使用以下的script:

#!/bin/sh
currentdir=`pwd`
ANDROID_OUT=out
ANDROID_DEVICE=freerunner
EXPORT_ROOT=$currentdir/build_jffs2_tmp
Usage()
{
	echo "Usage: 0ドル release|debug jffs2filename"
}
BuildImage()
{
	if [ -d 1ドル ]
	then
		echo "[INFO] Copying from... 1ドル"
		sudo rm -rf $EXPORT_ROOT
		mkdir $EXPORT_ROOT
		mkdir $EXPORT_ROOT/root
		# Copy the image...
		cd 1ドル
		tar cf - root | (cd $EXPORT_ROOT; sudo tar xf -)
		tar cf - system | (cd $EXPORT_ROOT/root; sudo tar xf -)
		# Change owner and permissions...
		cd $EXPORT_ROOT
		sudo chown -R root:root root
		sudo chmod -R 777 root
		
		cd $currentdir
		# Make the JFFS2 file
		mkfs.jffs2 --pad=0x700000 -o 2ドル -e 0x20000 -n -d$EXPORT_ROOT/root/
		echo "[INFO] Image written to 2ドル"
		
		sudo rm -rf $EXPORT_ROOT
	else
		echo "1ドル does not exist!"
	fi
}
if [ $# != 2 ]
then
	Usage
else
	case 1ドル in
	 release)
		BuildImage $ANDROID_OUT/target/product/$ANDROID_DEVICE 2ドル
		;;
	 debug)
		BuildImage $ANDROID_OUT/debug/target/product/$ANDROID_DEVICE 2ドル
		;;
	 *)
		Usage
	esac
fi

目前并没有与建置 Freerunner/Android kernel相关的说明文件。Sean McNeil 目前已经在 http://people.openmoko.org/sean_mcneil/ 这个位置释出Kernel。大部份的patche 需要与andy-tracking kernel branch 配合执行,而此Kernel终将成为最稳定的kernel版本。一旦所有的 patche都放到 kernel后,即可在stock kernel上执行 Android 。

与 Windows 连结性

让 Windows 能组织 Android "网络零件(Ethernet Gadget)" ,并且使用Android USB Windows driver (http://dl.google.com/android/android_usb_windows.zip) 充电,在你安装驱动程序前,你可以透过修改套件中的android_usb.inf 档案,来完成这项工作。你必须做出下面的修改动作:

将下面[Google.NTx86] 的内容加到android_usb.inf 档案中:

; Neo FreeRunner
%USB\VID_1457&PID_5117.DeviceDescRelease%=androidusb.Dev, USB\VID_1457&PID_5117
%USB\VID_1457&PID_5117&MI_01.DeviceDescRelease%=androidusb.Dev, USB\VID_1457&PID_5117&MI_01

并且在android_usb.inf档案的 [Strings] 区块下加入以下的内容:

USB\VID_1457&PID_5117.DeviceDescRelease="Neo FreeRunner"
USB\VID_1457&PID_5117&MI_01.DeviceDescRelease="Neo FreeRunner Composite ADB Interface"

adb的Windows版本并不会出现,并且连接到装置上,但至少FreeRunner会开始充电,装置驱动程序会出现"This device is working properly(此装置的功能运作正常)"的讯息。

取得帮助

Getting Started

你可以藉由下面的操作指引下载及建立Android source,请参考 http://source.android.com/download并且依照你的架构参考操作指引。

发布你的作品

最好的方法是透过 wiki systems、公开的 mailing list、讨论群组及公开的系统来发表你的作品。

对于你的工作,永远加入自己的credit,但请不要使用批注的方式,因为有些程序在没有批注的情况下已经不易阅读困难,这个方式将增加困难度。最好的情况是,建立patch,并且在表头放入你的个人连络信息。但协同运作的系统,如git可能已经帮你完成这个工作了。

若你建立了新的东西,并且能够指定它的授权,请考虑授权兼容性上的问题。

Porting 策略

分析它对现有的build system的影响力
- buid/core/combo/arm-linux.mk
  - -D__ARCH_ARM_4__ -D__ARCH_ARM_4T__
  - -march=armv4t -mcpu=arm920t
- 修补不同的静态参考数据到 'armv5'
隔离 ARMv5TE ISA 相依的程序代码
- e.g. grep -n -R -i "${armv5te_isa_pattern}" ~/android
摘要
- ( C/C++ )
  - 使用 inlined functions / #ifdef 状态式来完成移植性的功能
  - 针对 inlined assembler calls,目前使用一般的 C 程序也是可以被接受的,之后,我们再用手动的方式来进行最佳化的工作。
- ( ASM )
  - 处理器的状态是根据 ISA / architecture,如 #ifdef __ARCH_ARM_5__ ... #endif #ifdef __ARCH_ARM_4__ ... #endif
  - 强烈的建议处理器状态应该不要套迭在一起(如让他们彼此独占)
  - Some people have suggested that we should not do #ifdef's based on ARCH or ISA, but rather based on an AndroidConfig.h which would define macros like PLD(...) #ifdef HAVE_ARM_PLD pld #else ... #endif .

针对ARMv5TE 指令(instruction),可能潜藏着:

使用一般的registers(登录子),而不是使用 DSP 呼叫 (如 eabi / softfloat)
若它是 a) 无法判别的或者 b) 速度缓慢,则这个区段的程序则必须要分析,针对ARMv4T isa,必须使用hand-optimized 的方法

不支持的指令

以下是opcodes列表,它是自Android Source解压缩出来的,它不支持ARMv4T 兼容的处理器 (尤其是 arm920t)。 opcodes 代表ARMv5、ARMv5T及ARMv5TE 架构下可以使用的指令。它无法在 ARMv4T ISA下执行。这个列表耗费了许多时间编辑,直到编译无误的状态下,才会列出。

请牢记一件事,在一些状况下,将这些指令顺序的传送到ARMv4T 指令下是不可能的,或者是会出现无预期的结果:

必须要有额外的context。
opcodes变更登录子的状态,可能无法表现在 arm920t 核心上

Opcodes

Opcode	Desription	[PDF] Page Number	C	ASM
BLX(1)	Branch, Link, and Exchange	166	N/A (Unused in Android)	N/A (Unused in Android)
BLX(2)	Branch, Link, and Exchange	168	User:Cfriedt 20081028 Remove from inline assembly with something like #ifdef HAVE_BLX ... (inline asm) ... #else ... (inline asm with equivalent blx code, as shown to the right) ... #endif	User:Cfriedt 20081028 Substitute with a macro reference such as #ifdef HAVE_BLX #define BLX(a) \ blx a #else #define BLX(a) \ mov pc,lr \ bx a #endif
CLZ	Count Leading Zeros	175	User:Cfriedt 20081028 Remove from inline assembly with something like #ifdef HAVE_CLZ ... (inline asm) ... #else ... (inline asm with equivalent clz code, as shown to the right) ... #endif	User:Cfriedt 20081029 #ifdef HAVE_CLZ #define CLZ(Rd,Rm) \ clz Rd,Rm #else #define CLZ(Rd,Rm) \ ... #endif ... CLZ(Rd,Rm)
LDRD	Load Registers Doubleword	200	User:Cfriedt 20081028 Substitute different inline assembly code with something like #ifdef HAVE_LDRD ... (inline asm) ... #else ... (inline asm with ldrd substituted) ... #endif	User:Cfriedt 20081028 Substitute with a macro reference such as #ifdef HAVE_LDRD #define LDRD(a,b) \ ldrd a,b #else #define LDRD(a,b) \ ... #endif
PLD	Preload Data	240	User:Cfriedt 20081028 Remove from inline assembly with something like #ifdef HAVE_PLD ... (inline asm) ... #else ... (inline asm with pld removed) ... #endif	User:Cfriedt 20081028 Remove or substitute with a macro reference such as #ifdef HAVE_PLD #define PLD(a,b) \ pld a,b #else #define PLD(a,b) #endif ... PLD(r0,#0)
SMLA<x><y>	Signed Multiply-Accumulate	291
SMLAL<x><y>	Signed Multiply Accumulate Long	298
SMLAW<y>	Signed Multiply-Accumulate Word	302
SMUL<x><y>	Signed Multiply	316
SMULW<y>	Signed Multiply Word	320
QADD	Saturating Add	242
QDADD	Saturating Double and Add	249
QDSUB	Saturating Double and Subtract	251
QSUB	Saturating Subtract	253
STRD	Store Registers Doubleword	349	User:Cfriedt 20081028 Substitute different inline assembly code with something like #ifdef HAVE_STRD ... (inline asm) ... #else ... (inline asm without strd) ... #endif	User:Cfriedt 20081028 Substitute with a macro reference such as #ifdef HAVE_STRD #define STRD(a,b) \ strd a,b #else #define STRD(a,b) \ ... #endif

扫瞄使用ARMv5TE ISA的档案

使用下列的opcodes,可以扫瞄到与ARMv4T与不兼容的 Android source code指令顺序。

Code:

#!/bin/sh
# 1ドル is the android directory
if [ $# -ne 1 ]; then
exit -1
fi
cd "${1}"
opcodes="blx clz ldrd pld smlabb smlabt smlatt
smlal smlawb smlawt smulbb smulbt smultt smulwb
smulwt qadd qdadd qdsub qsub strd"
for op in ${opcodes}; do
echo "* ${op} ====================================="
if [ ! -e .files.${op} ]; then
files="$(grep -R -i "${op} " * 2>/dev/null)"
files="$(echo $files | grep -v "^Binary file" | sed -e 's/:.*//')"
files="$(echo $files| grep -v "CREDIT\|README\|^\(kernel/\|.git/\)\|\(\.txt\)$" | sort -u)"
echo "${files}" > .files.${op}
else
files="$(cat .files.${op})"
fi
for fil in ${files}; do
lines="$(grep -n -i "${op} " ${fil} | sed -e 's/:.*//g' )"
lines="$(echo $lines | sed -e 's/ /,/g')"
echo "** ${fil}: lines {${lines}}"
done
done

在Android下使用 ARMv5TE ISA 的源文件

以下的档案可能是完整的,也可能是不完整的。也可能有些程序内容是透过 python script产生的.

blx =====================================
- bionic/libc/tools/gensyscalls.py: lines {168,186}
- bootloader/legacy/nandwrite/init.S: lines {77}
- bootloader/legacy/usbloader/init.S: lines {95}
- dalvik/vm/arch/arm/CallEABI.S: lines {239}
- dalvik/vm/arch/arm/CallOldABI.S: lines {145}
- development/emulator/qtools/thumbdis.cpp: lines {187,265}
- external/qemu/target-arm/translate.c: lines {1151,1971,2444}
- external/qemu/trace.c: lines {774,1353,1358}
- system/core/libpixelflinger/codeflinger/disassem.c: lines {416}
clz =====================================
- development/emulator/qtools/armdis.cpp: lines {654}
- external/opencore/codecs_v2/audio/aac/dec/src/pv_normalize.h: lines {67,84}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/norm_l.h: lines {137}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/normalize_amr_wb.h: lines {78,95}
- external/opencore/codecs_v2/audio/mp3/dec/src/pvmp3_normalize.h: lines {67,84}
- external/opencore/codecs_v2/video/avc_h264/dec/src/vlc.cpp: lines {23}
- external/opencore/codecs_v2/video/m4v_h263/enc/src/vlc_encode_inline.h: lines {125,162,168,204,218}
- external/qemu/target-arm/translate.c: lines {1247}
- external/skia/libcorecg/Sk64.cpp: lines {340,341,343}
- external/skia/libcorecg/SkMatrix.cpp: lines {500,501}
- external/skia/libsgl/effects/SkColorMatrixFilter.cpp: lines {135}
- external/skia/libsgl/sgl/SkBitmap.cpp: lines {945,946,947}
- external/skia/libsgl/sgl/SkBitmapShader.cpp: lines {32,33,34}
- external/skia/libsgl/sgl/SkGraphics.cpp: lines {429,437}
ldrd =====================================
- dalvik/vm/mterp/armv5/OP_AGET_WIDE.S: lines {28}
- dalvik/vm/mterp/armv5/OP_IGET_WIDE.S: lines {37}
- dalvik/vm/mterp/armv5/OP_IGET_WIDE_QUICK.S: lines {10}
- dalvik/vm/mterp/armv5/OP_SGET_WIDE.S: lines {17}
- dalvik/vm/mterp/out/InterpAsm-armv5.S: lines {2653,7464,8318,8390}
- system/core/libpixelflinger/rotate90CW_4x4_16v6.S: lines {40,41,42,43}
pld =====================================
- bionic/libc/arch-arm/bionic/memcmp.S: lines {37,44,45,56,57,107,108,195,196}
- bionic/libc/arch-arm/bionic/memcmp16.S: lines {37,44,45,67,68,116,117,198,199}
- bionic/libc/arch-arm/bionic/memcpy.S: lines {55,56,57,145,266,293,320}
- bionic/libc/arch-arm/bionic/strlen.c: lines {59,65}
- bionic/libc/kernel/arch-arm/asm/arch/irqs.h: lines {162}
- external/elfutils/src/Makefile: lines {243}
- external/elfutils/src/Makefile.am: lines {32}
- external/elfutils/src/Makefile.in: lines {243}
- external/jpeg/jidctfst.S: lines {69,235,247}
- external/qemu/target-arm/translate.c: lines {1149}
- system/core/libpixelflinger/codeflinger/ARMAssembler.cpp: lines {368}
- system/core/libpixelflinger/codeflinger/ARMAssemblerInterface.cpp: lines {104,108,117}
- system/core/libpixelflinger/t32cb16blend.S: lines {111,112,134,143}
smlabb =====================================
- external/jpeg/jidctfst.S: lines {110,115,155,156}
- external/neven/Embedded/common/src/b_BasicEm/Math.c: lines {584,589}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_gcc.h: lines {147,166}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {120,129}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_gcc_v5.h: lines {514,533}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_v5.h: lines {418,429}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_armv5.h: lines {202}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_gcc_armv5.h: lines {250}
- external/opencore/codecs_v2/video/m4v_h263/enc/src/dct_inline.h: lines {119,155,167,278,326,341}
- external/opencore/codecs_v2/video/m4v_h263/enc/src/fastquant_inline.h: lines {178,225,437,517}
- frameworks/base/libs/audioflinger/AudioMixer.cpp: lines {405,436}
smlabt =====================================
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_gcc.h: lines {184}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {138}
- external/opencore/codecs_v2/video/m4v_h263/enc/src/dct_inline.h: lines {131,143,294,310}
smlatt =====================================
- external/neven/Embedded/common/src/b_BasicEm/Math.c: lines {585,590}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {157}
- frameworks/base/libs/audioflinger/AudioMixer.cpp: lines {441}
smlal =====================================
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v4.h: lines {179,223,236,257,267}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v4_gcc.h: lines {264,341}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {178,188,198}
- external/opencore/codecs_v2/audio/mp3/dec/src/asm/pvmp3_dct_9.s: lines {84,90,96,101,109,114,116,118,121,132,138,150,163,165,167,174,176,178}
- external/opencore/codecs_v2/audio/mp3/dec/src/asm/pvmp3_dct_9_gcc.s: lines {73,79,86,90,98,103,105,107,110,121,127,139,152,154,156,163,165,167}
- external/opencore/codecs_v2/audio/mp3/dec/src/asm/pvmp3_mdct_18.asm: lines {143,162,178,188,192,199,207,217,225,231,237,241,244}
- external/opencore/codecs_v2/audio/mp3/dec/src/asm/pvmp3_mdct_18.s: lines {145,164,180,190,194,201,209,219,227,233,239,243,246}
- external/opencore/codecs_v2/audio/mp3/dec/src/asm/pvmp3_mdct_18_gcc.s: lines {143,162,178,188,192,199,207,217,225,231,237,241,244}
- external/opencore/codecs_v2/audio/mp3/dec/src/asm/pvmp3_polyphase_filter_window.asm: lines {62,63,66,72,76,77,81,82,85,90,94,97,99,100,103,108,113,114,118,119,122,129,136,137,176,179,183,187,190,193}
- external/opencore/codecs_v2/audio/mp3/dec/src/asm/pvmp3_polyphase_filter_window.s: lines {67,68,71,77,81,82,86,87,90,95,99,102,104,105,108,113,118,119,123,124,127,134,141,142,181,184,188,192,195,198}
- external/opencore/codecs_v2/audio/mp3/dec/src/asm/pvmp3_polyphase_filter_window_gcc.s: lines {65,66,69,75,79,80,84,85,88,93,97,100,102,103,106,111,116,117,121,122,125,132,139,140,179,182,186,190,193,196}
- external/opencore/codecs_v2/audio/mp3/dec/src/pv_mp3dec_fxd_op_arm.h: lines {148}
- external/qemu/trace.c: lines {813}
- frameworks/base/opengl/libagl/iterators.S: lines {66,67}
- frameworks/base/opengl/libagl/matrix.h: lines {67,68,96,126,127,282,283,314,315,316}
smlawb =====================================
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_gcc.h: lines {203,259}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {166,416}
- frameworks/base/libs/audioflinger/AudioResamplerSinc.cpp: lines {93,109}
- frameworks/base/opengl/libagl/matrix.h: lines {163,203}
smlawt =====================================
- frameworks/base/libs/audioflinger/AudioResamplerSinc.cpp: lines {114}
- frameworks/base/opengl/libagl/matrix.h: lines {162,202,243,244}
smulbb =====================================
- external/jpeg/jidctfst.S: lines {109,114,151,153}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_gcc.h: lines {79}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {71,81}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_gcc_v5.h: lines {207,251,297,348,361,375,427,440,487}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_v5.h: lines {199,234,274,314,316,326,367,369,404}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_mac.h: lines {121,137}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_msu.h: lines {123,142}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_mult.h: lines {122,140}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/mpy_32.h: lines {132,134,138,164,177,191}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/mpy_32_16.h: lines {127,129,150,163}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/mult.h: lines {121,141}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_armv5.h: lines {115,139,151,163,189,190,212}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_gcc_armv5.h: lines {112,113,164,183,201,218,265}
- external/opencore/codecs_v2/video/m4v_h263/enc/src/fastquant_inline.h: lines {250,457,531}
- external/skia/include/corecg/SkMath.h: lines {170}
- frameworks/base/libs/audioflinger/AudioMixer.cpp: lines {420,462}
- system/core/libpixelflinger/t32cb16blend.S: lines {39,66,74,82}
smulbt =====================================
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_gcc.h: lines {115}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {109}
- system/core/libpixelflinger/codeflinger/texturing.cpp: lines {1091}
- system/core/libpixelflinger/t32cb16blend.S: lines {47,55}
smultt =====================================
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_gcc.h: lines {131}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {100}
- frameworks/base/libs/audioflinger/AudioMixer.cpp: lines {467}
- frameworks/base/libs/audioflinger/AudioResamplerSinc.cpp: lines {73}
smulwb =====================================
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_gcc.h: lines {221}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {373}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_armv5.h: lines {222}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_gcc_armv5.h: lines {283}
- external/opencore/codecs_v2/audio/sbc/enc/src/sbcenc_filter.h: lines {33}
- frameworks/base/opengl/libagl/matrix.h: lines {161,201,242}
smulwt =====================================
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_gcc.h: lines {202,240}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {385,415}
qadd =====================================
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_gcc.h: lines {64}
- external/opencore/codecs_v2/audio/aac/dec/src/fxp_mul32_arm_v5.h: lines {60}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_gcc_v5.h: lines {130,256}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_v5.h: lines {128,235}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_add.h: lines {122,137}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_mult.h: lines {123,145}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_armv5.h: lines {71,102,152,176,192}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_gcc_armv5.h: lines {91,115,148,202,234}
- external/openssl/crypto/bn/bn_prime.c: lines {454,455}
qdadd =====================================
- external/opencore/codecs_v2/audio/aac/dec/src/calc_sbr_synfilterbank.cpp: lines {116,162}
- external/opencore/codecs_v2/audio/aac/dec/src/trans4m_freq_2_time_fxp.cpp: lines {472,494}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_gcc_v5.h: lines {212,356,370,385,435,449}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_v5.h: lines {200,315,321,331,368,371}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_mac.h: lines {122,142}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/mpy_32.h: lines {133,136,140,172,186,201}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/mpy_32_16.h: lines {128,131,158,172}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_armv5.h: lines {116}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_gcc_armv5.h: lines {184}
qdsub =====================================
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_gcc_v5.h: lines {302}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_v5.h: lines {275}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_msu.h: lines {124,147}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_armv5.h: lines {140}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_gcc_armv5.h: lines {165}
qsub =====================================
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_gcc_v5.h: lines {167}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/basic_op_arm_v5.h: lines {162}
- external/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/l_sub.h: lines {121,138}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_armv5.h: lines {88,127}
- external/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op_gcc_armv5.h: lines {70,133}
strd =====================================
- dalvik/vm/mterp/armv5/OP_APUT_WIDE.S: lines {31}
- dalvik/vm/mterp/armv5/OP_IPUT_WIDE.S: lines {39}
- dalvik/vm/mterp/armv5/OP_IPUT_WIDE_QUICK.S: lines {14}
- dalvik/vm/mterp/armv5/OP_SPUT_WIDE.S: lines {21}
- dalvik/vm/mterp/out/InterpAsm-armv5.S: lines {2834,7530,8331,8542}
- dalvik/vm/oo/Object.h: lines {589}
- external/opencore/fileformats/avi/parser/include/pv_avifile_streamlist.h: lines {179}
- external/opencore/fileformats/avi/parser/src/pv_avifile_streamlist.cpp: lines {153}
- system/core/libpixelflinger/rotate90CW_4x4_16v6.S: lines {47,52,56,60}

讨论

附注

档案

system/core/libpixelflinger/codeflinger/ARMAssembler.cpp

必须要特别的注意。它负责动态产生DSP程序。

建议

User:Cfriedt 20081024 我不确定它的可行性多高,因为SMedia 3362 被NDA保护。然而,arm920t 缺乏浮点单元 / DSP core,它可能使用 SMedia chip 产生特定目地的方法?这对Android 平台来讲很有用,至少像是audio及 video codecs。撇开OpenGL ES 驱动程序,欢迎提供针对SMedia 的 Openmoko文件。

重要连结

(欢迎大家在这里加入重要连结)

文件

Android Documentation
ARM Documentation, (keywords: armv4t, armv5t, armv5te, arm920t, arm926ej-s)
ARM Assembly Language Programming
An Introduction to the GNU Assembler
ARM Procedure Call Standard, ARM Calling Conventions

指令设定参考

ARM Architecture Reference Manual,最后的ISA文件

硬件参考

社群讨论

Android Public Mailing Lists
- Specifically, android-porting
OpenMoko Mailing Lists
- Specifically, openmoko-kernel
Android on FreeRunner at KoolU.com
Openmoko Local Groups
Openmoko:Community_Portal

请参考

Debug_Board

其它连结

Youtube video /Android on FreeRunner

Video 1

Video 2

Retrieved from "http://wiki.openmoko.org/index.php?title=Android/zh_cn&oldid=71800"

Category:

Android