Add new code

Signed-off-by: Carlos Maiolino <[email protected]>

1 files changed, 20 insertions, 0 deletions

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