finally got argv working

asmsh.asm

@@ -19,18 +19,19 @@ extern environ
 
 section .data
  UNIX_PROMPT: db "%s@%s:%s$ ",0
- PROMPT_STR: times 4096 db 0
- HOSTNAME_STR: times 50 db 0
- EXEC_CMD: dd 0
-
- ZERO_STR: db 10,0 
- 
+ ZERO_STR: db 10,0
  STRTOK_SEP_STR: db " ",0
  
  QUIT_CMD_STR: db "quit",0
  EXIT_CMD_STR: db "exit",0
  CD_CMD_STR: db "cd ",0
- CHILD_PID: dw 0
+
+
+ PROMPT_STR: times 4096 db 0
+ HOSTNAME_STR: times 50 db 0
+ EXEC_CMD: times 2 dd 0
+
+ ARGS: times 64 dd 0
 
 section .text
  global _main
@@ -94,7 +95,7 @@ sh_loop:
  
  mov rdi,r14
  call split_line
- 
+aftersplit: 
  push rbp
  call _fork
  pop rbp
@@ -112,7 +113,7 @@ sh_loop:
 spawn_cmd:
  push rbp
  mov rdi,[EXEC_CMD]
- mov rsi,0
+ mov rsi,ARGS
  mov rdx,0
  call _execvp
  pop rbp
@@ -144,6 +145,7 @@ handle_cd:
  call _strtok ; cheap way to right trim whitespace
  pop rbp
  push rbp
+ mov rdi, rax
  call _chdir
  pop rbp
  jmp freecmdline
@@ -152,19 +154,28 @@ split_line:
  ;rdi register set by caller
  mov rsi, STRTOK_SEP_STR
  call _strtok
- mov [EXEC_CMD], rax ; store the command
+ mov [EXEC_CMD],rax
+
+ ;mov [ARGS],rax
+ mov r13,ARGS
+ add r13,0
+ mov [r13], rax
 
 split_line_loop:
  mov rdi, 0 ; invoke strtok() again to get command params
  mov rsi, STRTOK_SEP_STR
  call _strtok
-
  cmp rax, 0
+
  je split_line_done ; if strtok returns NULL, we're done
+ mov r13,ARGS
+ add r13,8
+ mov [r13], rax
  jne split_line_loop
 
 split_line_done:
  mov rax,0
+totally:
  ret
 
 unix_prompt: