error: PIC register '%ebx' clobbered in 'asm'

[Bharati]

I am getting this error on rhl5 -32 bit g++ 4.1.2

error: PIC register '%ebx' clobbered in 'asm'

for code:
asm
(
"xorl %%eax,%%eax\n\t"
"cpuid\n\t"
: "=a" (MaxInputValue)
:
: "%ebx", "%ecx", "%edx"
);

Same code is working on 64 bit machine with same compiler version.

Has anyone got this type of error?


Thanks,
Bharati

[gerard4143]

PIC is position independent code and in 32 bit it uses the ebx register thats why gcc is complaining...note 64 bit doesn't use ebx for PIC...also I'm not 100% sure I'm right on this....Gerard4143