DevHeads IoT Integration Server•4mo ago

Assembly Program on 64-bit OpenBSD Compiles Without Errors but Shows No Output

I don't get any errors whatsoever , but why don't I get any output when running this program on 64-bit OpenBSD system. I've compiled the code using:

as -o test.o test.s; ld -Bstatic test.o

as -o test.o test.s; ld -Bstatic test.o

The program executes without errors, but no text is printed to the console. I'm wondering if there might be an issue with the way I'm handling the message. Any insights would be greatly appreciated.

Solution:

It seems like your assembly program isn't printing text because it might be missing the correct system calls. On Unix-like systems (like OpenBSD), printing to the console usually involves using the write system call. Here's a simple, complete assembly program that prints "Hello, World!" to the console you can use this as a guide 👇 ```assembly .section .data message: .asciz "Hello, World!\n"...

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2 Replies

Solution

Enthernet Code•4mo ago

.section .data
message: .asciz "Hello, World!\n"

.section .text
.global _start

_start:
    mov $1, %rax
    mov $1, %rdi
    mov $message, %rsi
    mov $13, %rdx
    syscall

    mov $60, %rax
    xor %rdi, %rdi 
    syscall

.section .data
message: .asciz "Hello, World!\n"

.section .text
.global _start

_start:
    mov $1, %rax
    mov $1, %rdi
    mov $message, %rsi
    mov $13, %rdx
    syscall

    mov $60, %rax
    xor %rdi, %rdi 
    syscall

Marvee Amasi•4mo ago

Thanks man

Gaming

Programming

Assembly Program on 64-bit OpenBSD Compiles Without Errors but Shows No Output