X-Git-Url: https://git.danieliu.xyz/?p=sped.git;a=blobdiff_plain;f=sped.asm;h=eda67b319c0ed0c03fbe20f546e5b2bf76db4752;hp=6230c852604e4d959e9a909669573042e4b17b32;hb=17adbf435e9341831aa580404d18d8caa7448ce2;hpb=4c9d6b68e0b493e23969b79e96457b68cfed8895

diff --git a/sped.asm b/sped.asm
index 6230c85..eda67b3 100644
--- a/sped.asm
+++ b/sped.asm
@@ -1,4 +1,8 @@
 
+global main
+extern printf
+
+; macros
 %macro write_str 2
     mov eax, 4
     mov ebx, 1
@@ -8,14 +12,41 @@
 %endmacro
 
 section .data
-    msg db "SPED - the stupidly pointless editor", 0x0a
-    len equ $ - msg
+    banner_str db `SPED - the stupidly pointless editor\n`, 0x00
+    readfile_str db `reading file %s\n`, 0x00
+    nofile_str db `no file provided\n`, 0x00
+    argcount_str db `there are %d args\n`, 0x00
 
 section .text
-global _start
-_start:
-    write_str msg, len
+main:
+    push ebp
+    mov ebp, esp
+
+    ; read command line args
+    mov ecx, [ebp+8]
 
+    cmp ecx, 1
+    jg .readFile
+    
+    ; display error msg if no file
+    push nofile_str
+    call printf
     mov eax, 1
-    mov ebx, 42
-    int 0x80
+    jmp .exit
+
+.readFile:
+
+    mov ebx, DWORD [ebp+12]
+    add ebx, 4
+    push DWORD [ebx]
+    push readfile_str
+    call printf
+
+    mov eax, 0
+    jmp .exit
+
+.exit:
+    mov esp, ebp
+    pop ebp
+    ret
+