Thursday, February 21, 2008

Check on "Allow old ABI binaries ..." got Illegal instruction

With the google android kernel source, after "make goldfish_defconfig", check on "Kernel Features" -> "Allow old ABI binaries to run with this kernel", I got following simple native program failed with "Illegal instruction". The test native program source is in the following:

void _sig_handler(int signo)
printf("Got it: %d, %x, \n", signo, &signo);

main(int argc, char * argv[])
struct sigaction sa;

memset(&sa, 0x0, sizeof(sa));
sa.sa_flags = SA_RESTART;
sa.sa_handler = _sig_handler;
if (sigaction(SIGALRM, &sa, NULL) < 0) {
return -1;

printf("Sleep ... done\n");
return 0;
Follow the article Initialize libc for Android to create a dynamic linked android native program, and upload it to emulator. This native program will end with "Illegal instruction".

ABI is abbreviated of Application Binary Interface, but I dont know why it will have such problems when check on Old ABI binaries. So dont use it before you know you have to and how to.

1. after create a new kernel file, e.g. zImage, use -kernel zImage to use it in android emulator.


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