assemblyexample1.asm

@@ -1,30 +0,0 @@
-
-.global _start
-    //exposes a symbol called start to the assembler
-.intel_syntax noprefix
-
-//See: https://www.youtube.com/watch?v=6S5KRJv-7RU
-//See: https://blog.rchapman.org/posts/Linux_System_Call_Table_for_x86_64/
-
-_start:
-    //write call (sys_write)
-    mov rax,1
-        //sys_write system call
-    mov rdi, 1
-        //unsigned int fd = 1 (stdout)
-    lea rsi,[hello_world]
-        //load effective address (lea) into rsi of hello_world data
-    mov rdx, 14
-        //size_t count excluding null terminator
-    syscall
-
-    //exit call
-    mov rax, 60
-    mov rdi, 33 
-    //return result (must be "rdi" not "rdx" - how are these registers named?)
-    syscall 
-    //apprently int 80h interrupt is also syscall?
-
-hello_world:
-    .asciz "Hello, World!\n"
-

assemblytutorial.txt

@@ -1,24 +0,0 @@
-https://www.youtube.com/watch?v=6S5KRJv-7RU
-
-rdi
-rsi
-r8
-r - 64 bit pointer
-
-mov rdi,8
-mov rdi,rsi
-
-memory operations
-
-mov rdi, qword ptr[rsi]  values from memory into register
-mov qword ptr[rsi], rdi  store into memory operation
-
-https://blog.rchapman.org/posts/Linux_System_Call_Table_for_x86_64/
-
-
-Compilation:
-    as -c assemblyexample1.asm -o assemblyexample1.o
-    gcc assemblyexample1.o -o assemblyexample1 -nostdlib -static
-
-Check error code:
-    echo $?

test.txt

@@ -1,11 +1,3 @@
 I've added this new thing
 
 a new addition
-
-Added a third line
-
-a third line
-
-A fourth line
-An alternate fourth line.
-