Last change
on this file since 341 was
341,
checked in by krille_n_@…, 12 years ago
|
Changes:
- Fixed a bug from r323 in DisplayPrint.asm.
- Removed some unused code from XTIDECFG (undoing the change to Math.asm in r336 as part of it).
|
File size:
1.5 KB
|
Line | |
---|
1 | ; Project name : Assembly Library |
---|
2 | ; Description : Functions for register operations. |
---|
3 | |
---|
4 | |
---|
5 | ; Section containing code |
---|
6 | SECTION .text |
---|
7 | |
---|
8 | ;-------------------------------------------------------------------- |
---|
9 | ; Math_DivQWatSSBPbyCX |
---|
10 | ; Parameters: |
---|
11 | ; [SS:BP]: 64-bit unsigned divident |
---|
12 | ; CX: 16-bit unsigned divisor |
---|
13 | ; Returns: |
---|
14 | ; [SS:BP]: 64-bit unsigned quotient |
---|
15 | ; DX: 16-bit unsigned remainder |
---|
16 | ; Corrupts registers: |
---|
17 | ; AX |
---|
18 | ;-------------------------------------------------------------------- |
---|
19 | %ifndef EXCLUDE_FROM_XTIDECFG ; Not used in XTIDECFG |
---|
20 | ALIGN JUMP_ALIGN |
---|
21 | Math_DivQWatSSBPbyCX: |
---|
22 | xor dx, dx |
---|
23 | mov ax, [bp+6] ; Load highest divident WORD to DX:AX |
---|
24 | div cx |
---|
25 | mov [bp+6], ax ; Store quotient |
---|
26 | |
---|
27 | mov ax, [bp+4] |
---|
28 | div cx |
---|
29 | mov [bp+4], ax |
---|
30 | |
---|
31 | mov ax, [bp+2] |
---|
32 | div cx |
---|
33 | mov [bp+2], ax |
---|
34 | |
---|
35 | mov ax, [bp] |
---|
36 | div cx |
---|
37 | mov [bp], ax |
---|
38 | ret |
---|
39 | %endif |
---|
40 | |
---|
41 | |
---|
42 | ;-------------------------------------------------------------------- |
---|
43 | ; Math_DivDXAXbyCX |
---|
44 | ; Parameters: |
---|
45 | ; DX:AX: 32-bit unsigned divident |
---|
46 | ; CX: 16-bit unsigned divisor |
---|
47 | ; Returns: |
---|
48 | ; DX:AX: 32-bit unsigned quotient |
---|
49 | ; BX: 16-bit unsigned remainder |
---|
50 | ; Corrupts registers: |
---|
51 | ; Nothing |
---|
52 | ;-------------------------------------------------------------------- |
---|
53 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS OR EXCLUDE_FROM_XTIDECFG |
---|
54 | ALIGN JUMP_ALIGN |
---|
55 | Math_DivDXAXbyCX: ; This is currently unused (dead code) |
---|
56 | xor bx, bx |
---|
57 | xchg bx, ax |
---|
58 | xchg dx, ax |
---|
59 | div cx |
---|
60 | xchg ax, bx |
---|
61 | div cx |
---|
62 | xchg dx, bx |
---|
63 | ret |
---|
64 | %endif |
---|
Note: See
TracBrowser
for help on using the repository browser.