diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/os2/_pmos2.asm')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/os2/_pmos2.asm | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/os2/_pmos2.asm b/board/MAI/bios_emulator/scitech/src/pm/os2/_pmos2.asm deleted file mode 100644 index 761f0f42e1..0000000000 --- a/board/MAI/bios_emulator/scitech/src/pm/os2/_pmos2.asm +++ /dev/null @@ -1,180 +0,0 @@ -;**************************************************************************** -;* -;* SciTech OS Portability Manager Library -;* -;* ======================================================================== -;* -;* The contents of this file are subject to the SciTech MGL Public -;* License Version 1.0 (the "License"); you may not use this file -;* except in compliance with the License. You may obtain a copy of -;* the License at http://www.scitechsoft.com/mgl-license.txt -;* -;* Software distributed under the License is distributed on an -;* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or -;* implied. See the License for the specific language governing -;* rights and limitations under the License. -;* -;* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc. -;* -;* The Initial Developer of the Original Code is SciTech Software, Inc. -;* All Rights Reserved. -;* -;* ======================================================================== -;* -;* Language: 80386 Assembler, TASM 4.0 or NASM -;* Environment: OS/2 32 bit protected mode -;* -;* Description: Low level assembly support for the PM library specific -;* to OS/2 -;* -;**************************************************************************** - - IDEAL - -include "scitech.mac" ; Memory model macros - -header _pmos2 ; Set up memory model - -begdataseg _pmos2 - - cglobal _PM_ioentry - cglobal _PM_gdt -_PM_ioentry dd 0 ; Offset to call gate -_PM_gdt dw 0 ; Selector to call gate - -enddataseg _pmos2 - -begcodeseg _pmos2 ; Start of code segment - -;---------------------------------------------------------------------------- -; int PM_setIOPL(int iopl) -;---------------------------------------------------------------------------- -; Change the IOPL level for the 32-bit task. Returns the previous level -; so it can be restored for the task correctly. -;---------------------------------------------------------------------------- -cprocstart PM_setIOPL - - ARG iopl:UINT - - enter_c - pushfd ; Save the old EFLAGS for later - mov ecx,[iopl] ; ECX := IOPL level - xor ebx,ebx ; Change IOPL level function code (0) -ifdef USE_NASM - call far dword [_PM_ioentry] -else - call [FWORD _PM_ioentry] -endif - pop eax - and eax,0011000000000000b - shr eax,12 - leave_c - ret - -cprocend - -;---------------------------------------------------------------------------- -; void _PM_setGDTSelLimit(ushort selector, ulong limit); -;---------------------------------------------------------------------------- -; Change the GDT selector limit to given value. Used to change selector -; limits to address the entire system address space. -;---------------------------------------------------------------------------- -cprocstart _PM_setGDTSelLimit - - ARG selector:USHORT, limit:UINT - - enter_c - sub esp,20 ; Make room for selector data on stack - mov ecx,esp ; ECX := selector data structure - mov bx,[selector] ; Fill out the data structure - and bx,0FFF8h ; Kick out the LDT/GDT and DPL bits - mov [WORD ecx],bx - mov ebx,[limit] - mov [DWORD ecx+4],ebx - mov ebx,5 ; Set GDT selector limit function code -ifdef USE_NASM - call far dword [_PM_ioentry] -else - call [FWORD _PM_ioentry] -endif - add esp,20 - leave_c - ret - -cprocend - -;---------------------------------------------------------------------------- -; uchar _MTRR_getCx86(uchar reg); -;---------------------------------------------------------------------------- -; Read a Cyrix CPU indexed register -;---------------------------------------------------------------------------- -cprocstart _MTRR_getCx86 - - ARG reg:UCHAR - - enter_c - mov al,[reg] - out 22h,al - in al,23h - leave_c - ret - -cprocend - -;---------------------------------------------------------------------------- -; uchar _MTRR_setCx86(uchar reg,uchar val); -;---------------------------------------------------------------------------- -; Write a Cyrix CPU indexed register -;---------------------------------------------------------------------------- -cprocstart _MTRR_setCx86 - - ARG reg:UCHAR, val:UCHAR - - enter_c - mov al,[reg] - out 22h,al - mov al,[val] - out 23h,al - leave_c - ret - -cprocend - -;---------------------------------------------------------------------------- -; ulong _MTRR_disableInt(void); -;---------------------------------------------------------------------------- -; Return processor interrupt status and disable interrupts. -;---------------------------------------------------------------------------- -cprocstart _MTRR_disableInt - -; Do nothing! - ret - -cprocend - -;---------------------------------------------------------------------------- -; void _MTRR_restoreInt(ulong ps); -;---------------------------------------------------------------------------- -; Restore processor interrupt status. -;---------------------------------------------------------------------------- -cprocstart _MTRR_restoreInt - -; Do nothing! - ret - -cprocend - -;---------------------------------------------------------------------------- -; void DebugInt(void) -;---------------------------------------------------------------------------- -cprocstart DebugInt - - int 3 - ret - -cprocend - -endcodeseg _pmos2 - - END ; End of module - |
