CODEWITHSUNDEEP
androidassemblyandroid-ndk
3mx
3mx

Reputation: 23

Compile assembler for Android using NDK

I'm trying to compile 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?

Upvotes: 2

Views: 1471

Answers (2)

EboMike
EboMike

Reputation: 77742

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.)

Upvotes: 2

Igor Skochinsky
Igor Skochinsky

Reputation: 25278

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

Upvotes: 6

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