From 55dab91ad924acbee863e293f79e0aeee210b301 Mon Sep 17 00:00:00 2001
From: Johannes Findeisen <you@hanez.org>
Date: Wed, 10 Jan 2018 18:47:10 +0100
Subject: [PATCH] add asm versiob of helloworld. still needs correct yasm
 params

---
 Makefile       |  3 +++
 helloworld.asm | 26 ++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 helloworld.asm

diff --git a/Makefile b/Makefile
index acd1c9d..4725edb 100644
--- a/Makefile
+++ b/Makefile
@@ -5,5 +5,8 @@ debug:clean
 	$(CC) $(CFLAGS) -g -o helloworld helloworld.c
 stable:clean
 	$(CC) $(CFLAGS) -o helloworld helloworld.c
+asm:clean
+	yasm -f elf -o helloworld helloworld.asm
+	chmod +x helloworld
 clean:
 	rm -vfr *~ helloworld
diff --git a/helloworld.asm b/helloworld.asm
new file mode 100644
index 0000000..2723381
--- /dev/null
+++ b/helloworld.asm
@@ -0,0 +1,26 @@
+section .text				;section declaration
+
+;we must export the entry point to the ELF linker or
+global _start	;loader. They conventionally recognize _start as their
+;entry point. Use ld -e foo to override the default.
+
+_start:
+
+;write our string to stdout
+
+mov     edx,len ;third argument: message length
+mov     ecx,msg ;second argument: pointer to message to write
+mov     ebx,1   ;first argument: file handle (stdout)
+mov     eax,4   ;system call number (sys_write)
+int     0x80	;call kernel
+
+;and exit
+
+mov	    ebx,0	;first syscall argument: exit code
+mov     eax,1   ;system call number (sys_exit)
+int     0x80	;call kernel
+
+section .data				;section declaration
+
+msg db  "Hello, world!",0xa	;our dear string
+len equ $ - msg