diff options
Diffstat (limited to 'stdio.asm')
| -rw-r--r-- | stdio.asm | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -29,9 +29,11 @@ puts: printi: push bp mov bp, sp + push ax mov ax, [bp + 4] call putint .return: + pop ax mov sp, bp pop bp ret @@ -55,8 +57,8 @@ printh: puthex: push ax push bx - push dx push cx + push dx ; ax is integer to print ror ah, 4 ; reverse hex value @@ -91,8 +93,8 @@ puthex: jne .divide .return: - pop cx pop dx + pop cx pop bx pop ax ret @@ -141,6 +143,8 @@ printf: mov bp, sp mov di, bp ; save base pointer address + push di + mov bx, [bp + 4] ; format string address add bp, 6 ; set base pointer to beginning of '...' args @@ -234,6 +238,7 @@ printf: ; a procedure modifies DI without restoring ; it, we're doomed; we'll roll right off the ; edge into oblivion. + pop di mov sp, bp pop bp ret |