I'm sorry for the late answer. Originally I was planning to completely port Android. However, I have run out of time. Currently I have taken all steps to port Bionic to PPC.
I used some of the following posts to attempt to port Bionic. http://groups.google.com/group/android-porting/msg/df0d81612dcac4c4 http://groups.google.com/group/android-porting/msg/4a233f2bdee12597 When moving to cupcake (and thus kernel 2.6.25 to 2.6.27) I encountered several difficulties. For instance, for cleaning bionic's kernel headers, kernel/include/asm- powerpc was removed in 2.6.27. Also, bionic/libc/tools/checksyscalls.py script is outdated as the unistd.h file moved in 2.6.27. After following all steps, I tried compiling bionic. I encountered several compilation errors. I managed to fix most, until I hit a linker dependency: libcutils (found at system/core/libcutils). The file atomic.c defines the atomic operations. In this file, ARM, x86 (and even x86_64) are supported. The following define is also supported: #if defined(HAVE_MACOSX_IPC). Currently I'm trying to keep my documentation up to date as I am nearly out of time. On 14 mei, 06:07, Dhananjay Joshi <dhananjayingr...@gmail.com> wrote: > On Wed, May 13, 2009 at 2:41 PM, David Turner <di...@android.com> wrote: > > You will need to modify the build system to work well with > > TARGET_ARCH=powerpc > > (and I think it would be more reasonable to use TARGET_ARCH=ppc, but still) > > > For example, you need at the minimum to write a file named > > build/core/combo/linux-ppc.mk > > which will contain PowerPC-specific definitions to be used during the > > build. This includes > > defining a set of default include paths for all compilations. > > > You will probably need to write an AndroidConfig.h file, which is forcibly > > included by all > > compilation commands and defines a host of macros specific to the target > > platform. I > > don't remember where these are located, but there are already examples for > > a variety > > of platforms somewhere, they should be easy to find. > > > Look at build/core/combo/linux-arm.mk for a valid example. > > > Hope this helps > > > On Wed, May 13, 2009 at 11:00 AM, ErikK <erikkout...@gmail.com> wrote: > > >> Hello, > > >> I've done alot of research and work on Android to port it to PowerPC. > >> I've also searched this group alot and I believe I have done all the > >> neccessary work to port Bionic to PPC. > > >> Some details on my modifications: > >> - System Calls - I have generated all system calls for PPC using the > >> python scripts. > > >> - Kernel headers - I have found all 'used' kernel headers using the > >> script, copied these to the original dir, and 'cleaned' them. > > >> - Linker - I have written the few assembly lines for the linker for > >> PPC. > > >> - Arch-specific includes - I copied several which were in bionic/libc/ > >> arch-arm/include/machine from openbsd/netbsd's PPC includes to bionic/ > >> libc/arch-powerpc/include/machine. > > >> If I'm correct, now all is left is compiling and testing. > >> However, I instantly hit some missing files while trying to compile > >> bionic. (TARGET_ARCH=powerpc mm) > >> While compiling for ARM, all goes well. I think I have to define any > >> include directories in the makefiles? > >> If yes, where? I have searched in the build directory but couldn't > >> find anything about include directories. > > >> I tried adding the include directories myself to the Android.mk file > >> located in the linker dir, but ended up getting a few errors. As this > >> isn't the correct way, I prefer to do it the correct way. > > >> Any help or pointers are appreciated. > >> Thanks. > > >> Kind regards, > >> Erik > > > > Hi ErikK > > i am also working on android porting on powerpc . but for > time being we have taken out bionic option replaced by glibc available on my > target paltform.i have cross compiled dalvikvm for ppc but couldnt run it > because of seg faults. are you working on porting of whole android or only > bionic libc on ppc.please let me know...... > > Regards, > DJ --~--~---------~--~----~------------~-------~--~----~ unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting -~----------~----~----~----~------~----~------~--~---
