From d98f46ce647846b0aa30b2e16a30fd4e152a1bf5 Mon Sep 17 00:00:00 2001 From: Carlos Maiolino Date: Thu, 10 Jul 2025 22:55:07 +0200 Subject: Add new code Signed-off-by: Carlos Maiolino --- PGU/CHAP8/helloworld-lib.s | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 PGU/CHAP8/helloworld-lib.s (limited to 'PGU/CHAP8/helloworld-lib.s') diff --git a/PGU/CHAP8/helloworld-lib.s b/PGU/CHAP8/helloworld-lib.s new file mode 100644 index 0000000..6e04968 --- /dev/null +++ b/PGU/CHAP8/helloworld-lib.s @@ -0,0 +1,20 @@ +# Hello world using DSOs + +.section .data + helloworld: + .ascii "hello world\n\0" + +.section .text + +.globl _start + +_start: + + # This differs from the book. In x86_64, arguments are passed through + # registers most of the time, in contrast with i386, where we can push + # them in the stack. + movq $helloworld, %rdi + call printf + + movq $50, %rdi + call exit -- cgit v1.2.3