CODEWITHSUNDEEP
cassemblyx86
user2004149
user2004149

Reputation: 97

how to use tables in .asm file that are already declared and initialised in .h file

i declared a table(array) in .h file.

Now i want to use that file in .asm but i am unable to include .h into .asm

Help me out

Upvotes: 0

Views: 83

Answers (1)

Carl Norum
Carl Norum

Reputation: 225232

Assuming a C declaration something like:

char array[] = { 1, 2, 3, 4, 5 };

You can use it in your assembly file like this:

    .globl _array

lea  _array(%rip), %rbx
movb (%rbx), %al

The lea instruction puts the base address of array into rbx, and then the movb instruction grabs the first byte out. You could use 1(%rbx) to get array[1], and so forth.

NB - my example is from a Mac OS X test app I just made. If you're on a different system, you might have to do something different.

Upvotes: 0

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