Compile assembler for Android using NDK

I'm trying to com开发者_如何学Gopile some given assembler files (.S) for Android using the NDK. Unfortunately I'm getting the same error for each line: Error: bad instruction

Extract of the code:

#define FLAG_C 70(%ebx)

lsr_carry:
    cmpb    $32, %cl
    jae lsr_carry_32
    testb   %cl, %cl
    je  lsr_carry_zero
    shrl    %cl, %eax
    setc    FLAG_C
lsr_carry_zero:
    ret
lsr_carry_32:
    jne ls_carry_33
    shll    $1, %eax
    setc    FLAG_C
    xorl    %eax, %eax
    ret
ls_carry_33:
    xorl    %eax, %eax
    movb    %al, FLAG_C
    ret

I think I havent understood the basics of assembler programming. Does anyone can help me?

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You're trying to compile x86 code. Most Android devices run on ARM and the public NDK compiles only for ARM.

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It appears like you're trying to plug x86 assembly into Android? Most current Android devices are using the ARM architecture, which is a completely different language with entirely different opcodes.

That aside, I would recommend against using Assembly in the first place (well, unless you have existing code that you're trying to port.)