Hi All,
I'm trying to port dalvik VM onto PPC.
I could able to build 'dalvikvm' binary and the respective 'jar' files
that are needed for the execution of 'dalvikvm'('core.jar' ,
'ext.jar','framework.jar',android.policy.jar' and 'services.jar')
To test dalvikvm i followed the following steps:-
1:
export LD_LIBRARY_PATH=/home/cupcake/out/debug/target/product/eee_701/
system/lib
2:
export ANDROID_ROOT=/home/cupcake/out/debug/target/product/eee_701/
system
3:
export BOOTCLASSPATH=/home/cupcake/out/debug/target/product/eee_701/
systemframework/core.jar:/home/cupcake/out/debug/target/product/
eee_701/system/framework/ext.jar:/home/cupcake/out/debug/target/
product/eee_701/system/framework/framework.jar
4:
export ANDROID_DATA=/tmp/dalvik_$USER
mkdir -p $ANDROID_DATA/dalvik-cache
5:
$cat Foo.java
public class Foo {
public static void main(String[] args) {
System.out.println("Hello, world");
}
}
$javac Foo.java
$dx --dex --output=foo.jar Foo.class
6:
$./dalvikvm -cp foo.jar Foo
For the first execution of 'dalvikvm' I got segmentation fault.
On debugging in gdb I found where it was crashing.
To fix it I made modification in the following file
'dalvik/vm/mterp/common/asm-constants.h'
Line No :186
ORIGINAL-> MTERP_OFFSET(offArrayObject_contents, ArrayObject,
contents, 12)
MODIFIED-> MTERP_OFFSET(offArrayObject_contents, ArrayObject,
contents, 16)
Reason:-
'contents' member in ArrayObject structure is a 64-bit entity and
there are three 32-bit entities above it.
For satisfying 64-bit alignment 'contents' member should start at 16
byte offset rather than 12 byte.
After making the above change, I followed the same steps to execute
dalvikvm,
but this time i didnt get the seg fault but one message came up saying
"Dalvik VM init failed (check log file)".
On debugging in gdb I found the error line to be at
system/core/libcutils/ashmem-dev.c:60 ret = ioctl(fd,
ASHMEM_SET_SIZE, size)
; -- with errno set to -ENOTTY.
I really need help on this to go ahead
Thanks in advance
Anand
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