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strcmp is obsoleted by rep cmpsb

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This commit is contained in:
Xnoe 2021-08-29 07:00:41 +01:00
parent 378c199eab
commit 5fbe8c6886
Signed by: xnoe
GPG Key ID: 45AC398F44F0DAFE
1 changed files with 8 additions and 42 deletions
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50
kernel.asm
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@ -16,20 +16,16 @@ cmd_loop:
push newline push newline
call print call print
push user_cmd mov si, user_cmd
push cmd_help_text mov di, cmd_help_text
push 4 mov cx, 4
call strcmp rep cmpsb
cmp ax, 1
je cmd_help je cmd_help
push user_cmd mov si, user_cmd
push cmd_clear_text mov di, cmd_clear_text
push 5 mov cx, 5
call strcmp rep cmpsb
cmp ax, 1
je cmd_clear je cmd_clear
push cmd_err push cmd_err
@ -98,36 +94,6 @@ print_exit:
pop bp pop bp
ret ret
; strcmp(length, str1, str2)
strcmp:
push bp
mov bp, sp
mov si, [bp + 6]
mov di, [bp + 8]
mov word [bp - 2], 0
strcmp_loop:
mov ax, [bp + 4]
cmp [bp - 2], ax
je strcmp_equal
lodsb
cmp [di], al
jne strcmp_notequal
inc di
inc word [bp - 2]
jmp strcmp_loop
strcmp_equal:
mov ax, 1
jmp strcmp_exit
strcmp_notequal:
mov ax, 0
strcmp_exit:
pop bp
ret
; readline(max length, buffer) ; readline(max length, buffer)
readline: readline:
push bp push bp