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linuxassemblyx86x86-64att

read data from file in assembly AT&T

I want to read data from a file in assembly AT&T but I don't really know where to start. I haven't found a useful resource on internet.

My working environment info:

OS: Ubuntu 14 - 64 bit
CPU: Intel
GAS compiler
Assembly Sintax: AT&T
I'll assemble with: as -o hello.o hello.s
I'll link with: ld -o test hello.o
Solution

  • Look up how to do systems programming on POSIX in C (open/read/write/etc.), then use the same system calls in your asm. There's nothing special about asm for this, compared to just doing it in C. (except that in C you'd be using the glibc wrappers instead of the syscall instruction directly.)

    See the tag wiki for links documenting how to make system calls from asm.