CHAPTER 53. WINDOWS 16-BIT CHAPTER 53. WINDOWS 16-BIT
};
func1 proc near
c = word ptr 4
b = word ptr 6
a = word ptr 8
push bp
mov bp, sp
mov ax, [bp+a]
imul [bp+b]
add ax, [bp+c]
pop bp
retn 6
func1 endp
func2 proc near
arg_0 = word ptr 4
arg_2 = word ptr 6
arg_4 = word ptr 8
arg_6 = word ptr 0Ah
arg_8 = word ptr 0Ch
arg_A = word ptr 0Eh
push bp
mov bp, sp
mov ax, [bp+arg_8]
mov dx, [bp+arg_A]
mov bx, [bp+arg_4]
mov cx, [bp+arg_6]
call sub_B2 ; long 32-bit multiplication
add ax, [bp+arg_0]
adc dx, [bp+arg_2]
pop bp
retn 12
func2 endp
func3 proc near
arg_0 = word ptr 4
arg_2 = word ptr 6
arg_4 = word ptr 8
arg_6 = word ptr 0Ah
arg_8 = word ptr 0Ch
arg_A = word ptr 0Eh
arg_C = word ptr 10h
push bp
mov bp, sp
mov ax, [bp+arg_A]
mov dx, [bp+arg_C]
mov bx, [bp+arg_6]
mov cx, [bp+arg_8]
call sub_B2 ; long 32-bit multiplication
mov cx, [bp+arg_2]
add cx, ax
mov bx, [bp+arg_4]
adc bx, dx ; BX=high part, CX=low part
mov ax, [bp+arg_0]
cwd ; AX=low part d, DX=high part d
sub cx, ax
mov ax, cx
sbb bx, dx
mov dx, bx
pop bp
retn 14
func3 endp