|
Last change
on this file since 126 was 106, checked in by Tomi Tilli, 14 years ago |
|
Changes to Assembly Library:
- Some utility functions are now included only when including menu dialogs.
|
|
File size:
1.7 KB
|
| Rev | Line | |
|---|
| [54] | 1 | ; Project name : Assembly Library
|
|---|
| 2 | ; Description : Functions for register operations.
|
|---|
| 3 |
|
|---|
| [66] | 4 |
|
|---|
| [54] | 5 | ; Section containing code
|
|---|
| 6 | SECTION .text
|
|---|
| 7 |
|
|---|
| 8 | ;--------------------------------------------------------------------
|
|---|
| 9 | ; Registers_ExchangeDSSIwithESDI
|
|---|
| 10 | ; Parameters
|
|---|
| 11 | ; Nothing
|
|---|
| 12 | ; Returns:
|
|---|
| 13 | ; DS:SI and ES:DI are exchanged.
|
|---|
| 14 | ; Corrupts registers:
|
|---|
| 15 | ; Nothing
|
|---|
| 16 | ;--------------------------------------------------------------------
|
|---|
| 17 | ALIGN JUMP_ALIGN
|
|---|
| 18 | Registers_ExchangeDSSIwithESDI:
|
|---|
| 19 | push ds
|
|---|
| 20 | push es
|
|---|
| 21 | pop ds
|
|---|
| 22 | pop es
|
|---|
| 23 | xchg si, di
|
|---|
| 24 | ret
|
|---|
| 25 |
|
|---|
| 26 |
|
|---|
| 27 | ;--------------------------------------------------------------------
|
|---|
| 28 | ; Registers_CopySSBPtoESDI
|
|---|
| [106] | 29 | ; Registers_CopySSBPtoDSSI
|
|---|
| 30 | ; Registers_CopyDSSItoESDI
|
|---|
| 31 | ; Registers_CopyESDItoDSSI
|
|---|
| [54] | 32 | ; Parameters
|
|---|
| 33 | ; Nothing
|
|---|
| 34 | ; Returns:
|
|---|
| 35 | ; Copies farm pointer to different segment/pointer register pair
|
|---|
| 36 | ; Corrupts registers:
|
|---|
| 37 | ; Nothing
|
|---|
| 38 | ;--------------------------------------------------------------------
|
|---|
| [105] | 39 | ALIGN JUMP_ALIGN
|
|---|
| 40 | Registers_CopySSBPtoESDI:
|
|---|
| 41 | COPY_SSBP_TO_ESDI
|
|---|
| 42 | ret
|
|---|
| [54] | 43 |
|
|---|
| [106] | 44 | %ifdef INCLUDE_MENU_DIALOGS
|
|---|
| [54] | 45 |
|
|---|
| [106] | 46 | ALIGN JUMP_ALIGN
|
|---|
| 47 | Registers_CopySSBPtoDSSI:
|
|---|
| 48 | COPY_SSBP_TO_DSSI
|
|---|
| 49 | ret
|
|---|
| [54] | 50 |
|
|---|
| [106] | 51 | ALIGN JUMP_ALIGN
|
|---|
| 52 | Registers_CopyDSSItoESDI:
|
|---|
| 53 | COPY_DSSI_TO_ESDI
|
|---|
| 54 | ret
|
|---|
| [54] | 55 |
|
|---|
| [106] | 56 | ALIGN JUMP_ALIGN
|
|---|
| 57 | Registers_CopyESDItoDSSI:
|
|---|
| 58 | COPY_ESDI_to_DSSI
|
|---|
| 59 | ret
|
|---|
| [54] | 60 |
|
|---|
| [106] | 61 | %endif
|
|---|
| 62 |
|
|---|
| 63 |
|
|---|
| [54] | 64 | ;--------------------------------------------------------------------
|
|---|
| [106] | 65 | ; Registers_SetZFifNullPointerInDSSI (commented to save bytes)
|
|---|
| [54] | 66 | ; Parameters
|
|---|
| 67 | ; DS:SI: Far pointer
|
|---|
| 68 | ; Returns:
|
|---|
| 69 | ; ZF: Set if NULL pointer in DS:SI
|
|---|
| 70 | ; Corrupts registers:
|
|---|
| 71 | ; Nothing
|
|---|
| 72 | ;--------------------------------------------------------------------
|
|---|
| [105] | 73 | ;ALIGN JUMP_ALIGN
|
|---|
| 74 | ;Registers_SetZFifNullPointerInDSSI:
|
|---|
| 75 | ; push ax
|
|---|
| 76 | ; mov ax, ds
|
|---|
| 77 | ; or ax, si
|
|---|
| 78 | ; pop ax
|
|---|
| 79 | ; ret
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
