+; sped - the stupidly pointless editor
+; written by pinosaur
+
+%include "fileutils.S"
global main
extern printf
-; macros
-%macro write_str 2
- mov eax, 4
- mov ebx, 1
- mov ecx, %1
- mov edx, %2
- int 0x80
-%endmacro
-
section .data
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
main:
+ %define _ARGC 8
+ %define _ARGV 12
+
push ebp
mov ebp, esp
; read command line args
- mov ecx, [ebp+8]
-
+ mov ecx, [ebp+_ARGC]
cmp ecx, 1
- jg .readFile
+ jg _main_existing
; display error msg if no file
push nofile_str
call printf
mov eax, 1
- jmp .exit
+ jmp _main_exit
-.readFile:
-
- mov ebx, DWORD [ebp+12]
- add ebx, 4
+ _main_existing:
+ mov ebx, DWORD [ebp+_ARGV]
+ add ebx, 4 ; first user arg is filename
push DWORD [ebx]
- push readfile_str
- call printf
+ call readFile
mov eax, 0
- jmp .exit
+ jmp _main_exit
+
+ _main_exit:
+ %undef _ARGC
+ %undef _ARGV
-.exit:
mov esp, ebp
pop ebp
ret
