c - Variable in NASM -

i trying convert lines:

struct node * head; struct node * tail;

into nasm (x86-64). code partially in c , partially in assembly.

should write in section .bss this:

head resb 8 tail resb 8

also making global in section .text:

global head:data 8 global tail:data 8

? doesn't want work :/ know pointer in fact address, unsigned long.

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here the struct:

struct node {     unsigned long length;     char * buf;     struct node * previous;     struct node * next; };

you might want define global variables in data section can initialize values. pointers can defined quad words using dq:

section .data  global head head dq 0  global tail tail dq 0

hj