change statusbar text

src/drawing.asm

@@ -26,9 +26,9 @@ section .rodata
 
 	home_cursor:	db ESC_CHAR, "[H", 0
 
-	statusbar:	db ESC_CHAR, "[32;100m", "Use arrow keys to move cursor, enter to invert cell j/k to change simulation speed, p to       simulation. SPEED:", 0
+	statusbar:	db ESC_CHAR, "[32;100m", "Use arrow keys to move cursor, enter to invert cell j/k to change simulation speed, p to       simulation. Frame Delay multiplier:", 0
 	statusbarLen:	equ $-statusbar
-	START_STOP_pos: equ statusbarLen-25
+	START_STOP_pos: equ statusbarLen-42
 	
 	
 	start_str:	db "START", 0

src/main.asm

@@ -20,6 +20,8 @@ section .bss
 	extern cursor_rows
 	extern cursor_cols
 	
+	global running_in_tty
+	running_in_tty: RESB 1
 	
 section .rodata
 	extern resetLen
@@ -27,6 +29,8 @@ section .rodata
 	hide_cursor: db ESC_CHAR, "[?25l", 0
 	show_cursor: db ESC_CHAR, "[?25h", 0
 
+	help_text: db "asm-game-of-life [args]",0xA,"-h	display this help menu",0xA,"Controls:",0xA,"use arrow keys to move around",0xA,"ENTER to invert cell",0xA,"p     to START/STOP simulation",0xA,"k     to increase simulation speed",0xA,"j     to decrese simulation speed",0xA, 0
+
 section .text
 extern print_str
 extern unsigned_int_to_ascii
@@ -58,11 +62,50 @@ _start:
 
 	; handle args
 	pop rcx; get argc (number of arguments)
+	pop rax; get rid of program name arugument
 	cmp rcx, 1 
 	jle .no_arguments_provided
-	; TODO hanndle arguments
+	dec rcx
+	.handle_arg:
+	pop rax
+	mov word di, [rax]
+
+	cmp di, 0x682D; check if -h was passed
+	jne .next_arg
+	lea rdi, [help_text]
+	call print_str
+	jmp .exit_program
+
+	.next_arg:
+	dec rcx
+	test rcx, rcx
+	jnz .handle_arg
+	
 	.no_arguments_provided:
 
+	
+	pop rax; get rid of null termination of argv 
+	; handle enviroment vars
+
+	.handle_env:
+	pop rax
+	test rax, rax; test if we reached end of envs
+	jz .no_envs
+
+	mov dword edi, [rax]
+	cmp edi, 0x4D524554; check for "TERM" inverted becose endiannes
+	jne .handle_env
+	mov qword rdi, [rax+5]; remove the TERM= part this should never segfault since there sould allwas be other data behind enviroment vars and i dont mind garbage 
+	mov rsi, 0xffffffffff
+	and rdi, rsi
+	mov rsi, 0x78756e696c
+	cmp rdi, rsi; check for "linux"
+	jne .no_envs
+	mov byte [running_in_tty], 1
+
+	.no_envs:
+
+
 	call init_alloc
 
 	xor rax, rax
@@ -104,6 +147,7 @@ _start:
 	lea rdi, [show_cursor]
 	call print_str
 
+	.exit_program:
 	mov rax, SYS_EXIT
     	mov rdi, 0             ; return code
     	syscall