Revision as of 04:41, 24 April 2017

Simple Disassembly Example

Starting with a simple hello world program:

#include <stdio.h>

int main(void) 
{
    printf("Hello world! This is C.\n");
    return 0;
}

Now compile the program with debug flags:

$ gcc -g hello_world.c -o hello_from_c.x

and load it up into gdb:

$ gdb hello_from_c.x

Now you can run the program like normal:

(gdb) run

and to disassemble the binary into its assembly level instructions,

(gdb) disassemble main

@@ Line 1: / Line 1: @@
-{{Stub}}
+=Simple Disassembly Example=
+Starting with a simple hello world program:
+<pre>
+#include <stdio.h>
+int main(void)
+{
+    printf("Hello world! This is C.\n");
+    return 0;
+}
+</pre>
+Now compile the program with debug flags:
+<pre>
+$ gcc -g hello_world.c -o hello_from_c.x
+</pre>
+and load it up into gdb:
+<pre>
+$ gdb hello_from_c.x
+</pre>
+Now you can run the program like normal:
+<pre>
+(gdb) run
+</pre>
+and to disassemble the binary into its assembly level instructions,
+<pre>
+(gdb) disassemble main
+</pre>
 =References=