Android%2Fzh_tw.mw

{{Languages|Android}}
{{Distributions|Android}}

= Updates =
* 20081202 [http://www.koolu.com Koolu.com] 在[http://git.koolu.org/ Koolu GIT] [http://git.koolu.org/ Koolu GIT] ([http://koolu.com/Press-Release/ Press Release]已釋出給FreeRunner使用的 Android 源碼。

* 20081120 [http://www.koolu.com Koolu.com] 推動銷售搭載 Android的Openmoko Freerunner 。如提供現有的FreeRunner 下載可搭載的Android。直到 December 2008。

* 20081104 第一個可以在FreeRunner上執行的 Android-image已經成功的被 Sean McNeil編譯出來!  - sms 及通話可以使用，wifi 及藍芽則否。[http://onlinedev.blogspot.com/2008/11/porting-android-phase-3-done.html ''news-source'']

* 20081029 [[User:Cfriedt]] [http://benno.id.au 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[http://wiki.openmoko.org/wiki/Userspace_root_image mount 到唯讀的情況下]，要掛載 YAFFS映像檔在它被寫入 flash 後才有可能使用。(it complains about the block device being of type '1' and not 'NAND'). JFFS2 仍然有標準的 Openmoko image 格式的優點 (請參考 [[Flashing the Neo FreeRunner|燒製映像檔到FreeRunner]] 或 [[Flashing the Neo 1973|燒製映像檔到Neo 1973]])。

* 20081023 [[User:Bricode]] 追蹤包含ARMv5規格的 Android source tree狀態，我建立了一個表格表示它會包含什麼內容，及patche檔的狀態。它可以在 http://spreadsheets.google.com/pub?key=pzDEXnU19gkeTjpD28t-7fw 這個網址找到。

* 20081022 [[User:Cfriedt]] 可以在移除了v5TE指令下 ，沒有錯誤的'trivially' 為ARMv4T編譯 Android source code。雖然它不預期它可以被執行，至少我針對 build/core/combo/arm-linux.mk做了一些小小的取代。關於此點，我可以繼續像執行v4T指令順序般的，重新執行 v5TE 指令。(或者，重新執行整個 hand-optimized v4T 指令組合)。

* 20081021 [[User:Cfriedt]] Android -> FreeRunner ，在我的[http://perpetual-notion.blogspot.com/search/label/android 部落格]上有討論。

* 20081021 Google 釋出Apache free 及 open-source手機下，大部份的[http://source.android.com/download source code] 、 [http://source.android.com/license license]， 部份被涵蓋在現有的授權(licenses)下，如 Linux kernel 是屬於 GPLv2授權。

* 200810?? [http://www.koolu.com Koolu.com] 宣佈他們將會 '''銷售搭載Android的Openmoko Freerunner '''，這個計劃會在2008年11月開始，並且提供現有的FreeRunner用戶 '''免費下載可搭載在Freerunner上的Android''' 。 知名的 open-source 愛好者[http://koolu.com/The-Koolu-Team/maddog.html Jon "maddog" Hall] 是Koolu的CTO及代表。

= 簡介 =
本網頁撰寫的目地在於將[http://www.android.com Android OS] 移植到 [[Neo 1973]] 及 [[Neo FreeRunner]] 手機上。Android OS 於2008年10月21日[http://source.android.com/posts/opensource  公開的發佈]  。
下列的資訊，可以提供您暸解在 [[Neo1973 Hardware|Neo 1973]]及 [[Neo_FreeRunner_GTA02_Hardware|FreeRunner]] [http://benno.id.au/blog/2007/11/21/android-neo1973 移植工作] [http://perpetual-notion.blogspot.com/search/label/android 目前的運作情形] 
[http://groups.google.com/group/android-porting 及現狀]。

== 目標 ==
# 有系統化的在Android codebase下使用提供給 ARMv4T 的patch檔。
# 提供在Android codebase在下Neo1973 與 Neo FreeRunner hardware-dependent patches 檔， 這項任務已經被 Openmoko 工程師完成，在不強迫變更 Android-specific upstream下。
# 在[[Distributions]]網頁中，提供有用的Android 檔案系統及kernel。

== 使用現有的二進位檔安裝 ==

詳盡的在FreeRunner上安裝Android (使用 Sean McNeil的kernel及rootfs 套件，及 Qi bootloader) ，何以在[http://www.copiesofcopies.org/webl/?p=34 http://www.copiesofcopies.org/webl/?p=34]此網址找到。

== 早期目標 ==
就如同 [http://benno.id.au Ben Leslie] 在 [http://benno.id.au/blog/2007/11/21/android-neo1973 blog] 中所提到的，在 source code釋出之前，[http://www.android.com Android] 被設計為使用ARMv5TE 架構[http://en.wikipedia.org/wiki/Instruction_set_architecture instruction set architecture] (ISA)，允許 [http://en.wikipedia.org/wiki/ARM_architecture#DSP_Enhancement_Instructions DSP 擴充的指令]。 相較於 ARMv5TE ISA， the Neo1973 及 FreeRunner 電話聽筒都著重在arm920t core，並可以應用到 ARMv4T ISA。

在源碼開放之前，kernel trap handlers 被用來 '模擬' ARMv5TE ISA。雖然這個結果在不同的案例下運作，trapping 是較花成本及效能的一種結果。甚至於，在沒有明確的暸解哪個狀況是被不同的指令所設定的情兄下，如Thumb Mode execution，這個結果成為沒有定論。

== 目前的狀態 ==

隨著 Android釋出 [http://source.android.com source code]，Open Source社群不再受限於使用binary-only 產品。The Open Handset Alliance (OHA)已經讓他們的source code 成為能讓大家致富及受益的產品。

目前，porting 以不同的循環模式運做。Patches需要透過  [http://source.android.com/submit-patches official Android channels]提交。

[http://www.koolu.com Koolu]，Freerunner 的經銷商， 在[http://git.koolu.com http://git.koolu.com]釋出了他們搭載FreeRunner的源碼。參考 [[#Building the Koolu Android Source]]下的說明可以暸解到如何製作供給Freerunner使用的Android image。

為了要追蹤Android source tree的哪個部份包含了特定的 ARMv5 程式，我製作了包含patches狀態的表格。這個表格可以在 http://spreadsheets.google.com/pub?key=pzDEXnU19gkeTjpD28t-7fw 找到。[[User:Bricode]]

[[User:Seanmcneil3|Sean McNeil]] [http://3v1n0.tuxfamily.org/tumblelog/post/368 指出]他可以在FreeRunner上執行包含通話功能的 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 ===

# 參考[http://source.android.com/download#TOC-Setting-up-your-machine Setting up your machine] 中的Google build 說明，進行設定。
# 安裝 <tt>repo</tt> 並下載源碼，你可以在 http://trac.koolu.org/找到它的文件。
# 在完成build後，你可以藉由[http://lists.openmoko.org/pipermail/community/2008-December/036982.html 的訊息]編輯及執行McNeil的 scripts，將root file system 放在一起。第一個 script (cp_android_OS) 用來複製最新的built files到 staging area。  第二個(mkjffs2) 則從staging area會製作一個jffs2 image。請確定在二個檔案中編輯你的路徑。或者，你可以使用[[#Building a jffs2 image|以下的]]script 
# 上面執行的結果是<tt>androidfs.jffs2</tt>的檔案，它可以被燒進你的Freerunner。

==== 製作jffs2 image ====
你可以使用以下的script：
<pre>
#!/bin/sh

currentdir=`pwd`

ANDROID_OUT=out
ANDROID_DEVICE=freerunner
EXPORT_ROOT=$currentdir/build_jffs2_tmp

Usage()
{
	echo "Usage: $0 release|debug jffs2filename"
}

BuildImage()
{

	if [ -d $1 ]
	then
		echo "[INFO] Copying from... $1"

		sudo rm -rf $EXPORT_ROOT
		mkdir $EXPORT_ROOT
		mkdir $EXPORT_ROOT/root

		# Copy the image...
		cd $1
		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 $2 -e 0x20000 -n -d$EXPORT_ROOT/root/
		echo "[INFO] Image written to $2"
		
		sudo rm -rf $EXPORT_ROOT
	else
		echo "$1 does not exist!"
	fi
}

if [ $# != 2 ]
then
	Usage
else

	case $1 in
	    release)
		BuildImage $ANDROID_OUT/target/product/$ANDROID_DEVICE $2
		;;
	    debug)
		BuildImage $ANDROID_OUT/debug/target/product/$ANDROID_DEVICE $2
		;;
	    *)
		Usage
	esac
fi

</pre>


目前並沒有與建置 Freerunner/Android kernel相關的說明文件。[[User:Seanmcneil3|Sean McNeil]] 目前已經在 http://people.openmoko.org/sean_mcneil/ 這個位置釋出Kernel。大部份的patche 需要與<tt>andy-tracking</tt> kernel branch 配合執行，而此Kernel終將成為最穩定的kernel版本。 一旦所有的 patche都放到 kernel後，即可在stock kernel上執行 Android 。

=== 與 Windows 連結性 ===

讓 Windows 能組織 Android "網路零件(Ethernet Gadget)" ，並且使用Android USB Windows driver (http://dl.google.com/android/android_usb_windows.zip) 充電，在你安裝驅動程式前，你可以透過修改套件中的android_usb.inf 檔案，來完成這項工作。你必須做出下面的修改動作：

將下面[Google.NTx86] 的內容加到android_usb.inf 檔案中：

<pre>
; 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
</pre>

並且在android_usb.inf檔案的 [Strings] 區塊下加入以下的內容：

<pre>
USB\VID_1457&PID_5117.DeviceDescRelease="Neo FreeRunner"
USB\VID_1457&PID_5117&MI_01.DeviceDescRelease="Neo FreeRunner Composite ADB Interface"
</pre>

adb的Windows版本並不會出現，並且連接到裝置上，但至少FreeRunner會開始充電，裝置驅動程式會出現"This device is working properly(此裝置的功能運作正常)"的訊息。

= 取得幫助 =

== Getting Started ==

你可以藉由下面的操作指引下載及建立Android source，請參考 [http://source.android.com/download http://source.android.com/download]並且依照你的架構參考操作指引。

== 發佈你的作品 ==

最好的方法是透過 wiki systems、公開的 mailing list、討論群組及公開的系統來發表你的作品。

對於你的工作，永遠加入自己的credit，但請不要使用註解的方式，因為有些程式在沒有註解的情況下已經不易閱讀困難，這個方式將增加困難度。最好的情況是，建立patch，並且在表頭放入你的個人連絡資訊。但協同運作的系統，如git可能已經幫你完成這個工作了。

若你建立了新的東西，並且能夠指定它的授權，請考慮授權相容性上的問題。

== Porting 策略 ==

* 分析它對現有的build system的影響力
** buid/core/combo/arm-linux.mk
*** -D__ARCH_ARM_4__ -D__ARCH_ARM_4T__
*** -march=armv4t -mcpu=arm920t
** 修補不同的靜態參考資料到 'armv5'
* 隔離 ARMv5TE ISA 相依的程式碼
** e.g. grep -n -R -i "${armv5te_isa_pattern}" ~/android
* 摘要
** ( C/C++ )
*** 使用 inlined functions / #ifdef 狀態式來完成移植性的功能
*** 針對 inlined assembler calls，目前使用一般的 C 程式也是可以被接受的，之後，我們再用手動的方式來進行最佳化的工作。
** ( ASM )
*** 處理器的狀態是根據 ISA / architecture，如 #ifdef __ARCH_ARM_5__ ... #endif #ifdef __ARCH_ARM_4__ ... #endif
*** 強烈的建議處理器狀態應該不要套疊在一起(如讓他們彼此獨佔)
*** 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 . 

針對ARMv5TE 指令(instruction)，可能潛藏著：
* 使用一般的registers(登錄子)，而不是使用 DSP 呼叫 (如 eabi / softfloat)
* 若它是 a) 無法判別的 或者 b) 速度緩慢，則這個區段的程式則必須要分析，針對ARMv4T isa，必須使用hand-optimized 的方法

== 不支援的指令 ==

以下是opcodes列表，它是自Android Source解壓縮出來的，它不支援ARMv4T 相容的處理器 (尤其是 arm920t)。 opcodes 代表ARMv5、ARMv5T及ARMv5TE 架構下可以使用的指令。它無法在 ARMv4T ISA下執行。這個列表耗費了許多時間編輯，直到編譯無誤的狀態下，才會列出。

請牢記一件事，在一些狀況下，將這些指令順序的傳送到ARMv4T 指令下是不可能的，或者是會出現無預期的結果：
* 必須要有額外的context。
* opcodes變更登錄子的狀態，可能無法表現在 arm920t 核心上

=== Opcodes ===

{{scroll box|height=480px|text=
<TABLE BORDER="1">
<TR>
<TH>Opcode</TH>
<TH>Desription</TH>
<TH>[[http://www.arm.com/miscPDFs/14128.pdf PDF]] Page Number</TH>
<TH>C</TH>
<TH>ASM</TH>
</TR>
<TR>
<TH VALIGN="TOP">BLX(1)</TH>
<TD>Branch, Link, and Exchange</TD>
<TD>166</TD>
<TD>N/A (Unused in Android)</TD>
<TD>N/A (Unused in Android)</TD>
</TR>
<TR>
<TH VALIGN="TOP">BLX(2)</TH>
<TD>Branch, Link, and Exchange</TD>
<TD>168</TD>
<TD>
[[User:Cfriedt]] 20081028
Remove from inline assembly with something like
<pre>
#ifdef HAVE_BLX
... (inline asm) ...
#else
... (inline asm with equivalent blx code, as shown to the right) ...
#endif
</pre>
</TD>
<TD>
[[User:Cfriedt]] 20081028
Substitute with a macro reference such as
<pre>
#ifdef HAVE_BLX
#define BLX(a) \
blx a
#else
#define BLX(a) \
mov pc,lr \
bx a
#endif
</pre>
</TD>
</TR>
<TR>
<TH VALIGN="TOP">CLZ</TH>
<TD>Count Leading Zeros</TD>
<TD>175</TD>
<TD>
[[User:Cfriedt]] 20081028
Remove from inline assembly with something like
<pre>
#ifdef HAVE_CLZ
... (inline asm) ...
#else
... (inline asm with equivalent clz code, as shown to the right) ...
#endif
</pre>
</TD>
<TD>
[[User:Cfriedt]] 20081029
<pre>
#ifdef HAVE_CLZ
#define CLZ(Rd,Rm) \
clz Rd,Rm
#else
#define CLZ(Rd,Rm) \
...
#endif
...
CLZ(Rd,Rm)
</pre>
</TD>
</TR>
<TR>
<TH VALIGN="TOP">LDRD</TH>
<TD>Load Registers Doubleword</TD>
<TD>200</TD>
<TD>
[[User:Cfriedt]] 20081028
Substitute different inline assembly code with something like
<pre>
#ifdef HAVE_LDRD
... (inline asm) ...
#else
... (inline asm with ldrd substituted) ...
#endif
</pre>
</TD>
<TD>
[[User:Cfriedt]] 20081028
Substitute with a macro reference such as
<pre>
#ifdef HAVE_LDRD
#define LDRD(a,b) \
ldrd a,b
#else
#define LDRD(a,b) \
...
#endif
</pre>
</TD>
</TR>
<TR>
<TH VALIGN="TOP">PLD</TH>
<TD>Preload Data</TD>
<TD>240</TD>
<TD>
[[User:Cfriedt]] 20081028
Remove from inline assembly with something like
<pre>
#ifdef HAVE_PLD
... (inline asm) ...
#else
... (inline asm with pld removed) ...
#endif
</pre>
</TD>
<TD>
[[User:Cfriedt]] 20081028
Remove or substitute with a macro reference such as
<pre>
#ifdef HAVE_PLD
#define PLD(a,b) \
pld a,b
#else
#define PLD(a,b)
#endif
...
PLD(r0,#0)
</pre>
</TD>
</TR>
<TR>
<TH VALIGN="TOP">SMLA&lt;x&gt;&lt;y&gt;</TH>
<TD>Signed Multiply-Accumulate</TD>
<TD>291</TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TH VALIGN="TOP">SMLAL&lt;x&gt;&lt;y&gt;</TH>
<TD>Signed Multiply Accumulate Long</TD>
<TD>298</TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TH VALIGN="TOP">SMLAW&lt;y&gt;</TH>
<TD>Signed Multiply-Accumulate Word</TD>
<TD>302</TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TH VALIGN="TOP">SMUL&lt;x&gt;&lt;y&gt;</TH>
<TD>Signed Multiply</TD>
<TD>316</TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TH VALIGN="TOP">SMULW&lt;y&gt;</TH>
<TD>Signed Multiply Word</TD>
<TD>320</TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TH VALIGN="TOP">QADD</TH>
<TD>Saturating Add</TD>
<TD>242</TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TH VALIGN="TOP">QDADD</TH>
<TD>Saturating Double and Add</TD>
<TD>249</TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TH VALIGN="TOP">QDSUB</TH>
<TD>Saturating Double and Subtract</TD>
<TD>251</TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TH VALIGN="TOP">QSUB</TH>
<TD>Saturating Subtract</TD>
<TD>253</TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TH VALIGN="TOP">STRD</TH>
<TD>Store Registers Doubleword</TD>
<TD>349</TD>
<TD>
[[User:Cfriedt]] 20081028
Substitute different inline assembly code with something like
<pre>
#ifdef HAVE_STRD
... (inline asm) ...
#else
... (inline asm without strd) ...
#endif
</pre>
</TD>
<TD>
[[User:Cfriedt]] 20081028
Substitute with a macro reference such as
<pre>
#ifdef HAVE_STRD
#define STRD(a,b) \
strd a,b
#else
#define STRD(a,b) \
...
#endif
</pre>

</TD>
</TR>
</TABLE>
}}

=== 掃瞄使用ARMv5TE ISA的檔案 ===

使用下列的opcodes，可以掃瞄到與ARMv4T與不相容的 Android source code指令順序。


'''Code:'''
{{scroll box|height=240px|text=
<pre>
#!/bin/sh

# $1 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
</pre>
}}

=== 在Android下使用 ARMv5TE ISA 的原始檔案  ===

以下的檔案可能是完整的，也可能是不完整的。也可能有些程式內容是透過 python script產生的.

{{scroll box|height=150px|text=
* 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}
}}

=== 討論 ===

=== 附註 ===
檔案
<pre>
system/core/libpixelflinger/codeflinger/ARMAssembler.cpp
</pre>

必須要特別的注意。它負責動態產生DSP程式。

== 建議 ==
* [[User:Cfriedt]] 20081024 我不確定它的可行性多高，因為[http://wiki.openmoko.org/wiki/Neo_FreeRunner_Hardware_Issues#SMedia_3362_Documentation_.26_OpenGL_ES_Drivers SMedia 3362 被NDA保護]。 然而，arm920t 缺乏浮點單元 / DSP core，它可能使用 SMedia chip 產生特定目地的方法？這對Android 平台來講很有用，至少像是audio及 video codecs。 撇開OpenGL ES 驅動程式，歡迎提供針對SMedia　的　Openmoko文件。

= 重要連結 =
(歡迎大家在這裡加入重要連結)

== 文件 ==
* [http://source.android.com/documentation Android Documentation]
* [http://www.arm.com/documentation/ ARM Documentation], (keywords: armv4t, armv5t, armv5te, arm920t, arm926ej-s)
* [http://www.arm.com/miscPDFs/9658.pdf ARM Assembly Language Programming]
* [http://www.cse.unsw.edu.au/~cs3221/labs/assembler-intro.pdf An Introduction to the GNU Assembler]
* [http://www.heyrick.co.uk/assembler/apcsintro.html ARM Procedure Call Standard], [http://en.wikipedia.org/wiki/Calling_convention#ARM ARM Calling Conventions]

== 指令設定參考 ==
* [http://www.arm.com/miscPDFs/14128.pdf ARM Architecture Reference Manual]，最後的ISA文件

* [http://www.simplemachines.it/doc/QRC0001H_rvct_v2.1_arm.pdf 設定Quick Reference Card的ARM 指令]
* [http://infocenter.arm.com/help/topic/com.arm.doc.qrc0001l/QRC0001_UAL.pdf 設定Quick Reference Card　的ARM及Thumb -2 指令]
* [http://infocenter.arm.com/help/topic/com.arm.doc.dvi0025b/DVI0025.pdf ARMv4T] (請參考1.4.13小節)
* [http://infocenter.arm.com/help/topic/com.arm.doc.dvi0014a/DVI0014A_ARM10T_PO.pdf ARMv5T] (請參考 4.16小節)
* [http://www.arm.com/pdfs/ARM-DSP.pdf ARM DSP 延伸指令集]
* [http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042c/IHI0042C_aapcs.pdf ARM架構下的Procedure Call Standard ]

== 硬體參考 ==

* [[Neo1973 Hardware]]
* [[Neo FreeRunner GTA02 Hardware]]

== 社群討論 ==
* [http://source.android.com/discuss Android Public Mailing Lists]
** Specifically, [http://groups.google.com/group/android-porting android-porting]
* [http://lists.openmoko.org/mailman/listinfo OpenMoko Mailing Lists]
** Specifically, [http://lists.openmoko.org/mailman/listinfo/openmoko-kernel openmoko-kernel]
* [http://forum.koolu.org/viewforum.php?f=10 Android on FreeRunner] at KoolU.com
* [[Openmoko Local Groups]]
* [[Openmoko:Community_Portal]]

= 請參考 =

* [[Debug_Board]]

= 其它連結 =
== Youtube video /Android on FreeRunner ==

[http://tw.youtube.com/watch?v=m4NbsLmF9j0 Video 1]

[http://tw.youtube.com/watch?v=r6Op-7tNTiw Video 2]

[[Category:Android]]