diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/vxd/_pm.asm')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/vxd/_pm.asm | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/vxd/_pm.asm b/board/MAI/bios_emulator/scitech/src/pm/vxd/_pm.asm deleted file mode 100644 index 64a7cecb2d..0000000000 --- a/board/MAI/bios_emulator/scitech/src/pm/vxd/_pm.asm +++ /dev/null @@ -1,299 +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: 32-bit Windows VxD -;* -;* Description: Low level assembly support for the PM library specific to -;* Windows VxDs. -;* -;**************************************************************************** - - IDEAL - -include "scitech.mac" ; Memory model macros - -header _pm ; Set up memory model - -begdataseg _pm - - cextern _PM_savedDS,USHORT - -enddataseg _pm - -P586 - -begcodeseg _pm ; Start of code segment - -;---------------------------------------------------------------------------- -; void PM_segread(PMSREGS *sregs) -;---------------------------------------------------------------------------- -; Read the current value of all segment registers -;---------------------------------------------------------------------------- -cprocstart PM_segread - - ARG sregs:DPTR - - enter_c - - mov ax,es - _les _si,[sregs] - mov [_ES _si],ax - mov [_ES _si+2],cs - mov [_ES _si+4],ss - mov [_ES _si+6],ds - mov [_ES _si+8],fs - mov [_ES _si+10],gs - - leave_c - ret - -cprocend - -;---------------------------------------------------------------------------- -; int PM_int386x(int intno, PMREGS *in, PMREGS *out,PMSREGS *sregs) -;---------------------------------------------------------------------------- -; Issues a software interrupt in protected mode. This routine has been -; written to allow user programs to load CS and DS with different values -; other than the default. -;---------------------------------------------------------------------------- -cprocstart PM_int386x - -; Not used for VxDs - - ret - -cprocend - -;---------------------------------------------------------------------------- -; void PM_saveDS(void) -;---------------------------------------------------------------------------- -; Save the value of DS into a section of the code segment, so that we can -; quickly load this value at a later date in the PM_loadDS() routine from -; inside interrupt handlers etc. The method to do this is different -; depending on the DOS extender being used. -;---------------------------------------------------------------------------- -cprocstart PM_saveDS - - mov [_PM_savedDS],ds ; Store away in data segment - ret - -cprocend - -;---------------------------------------------------------------------------- -; void PM_loadDS(void) -;---------------------------------------------------------------------------- -; Routine to load the DS register with the default value for the current -; DOS extender. Only the DS register is loaded, not the ES register, so -; if you wish to call C code, you will need to also load the ES register -; in 32 bit protected mode. -;---------------------------------------------------------------------------- -cprocstart PM_loadDS - - mov ds,[cs:_PM_savedDS] ; We can access the proper DS through CS - ret - -cprocend - -;---------------------------------------------------------------------------- -; void PM_setBankA(int bank) -;---------------------------------------------------------------------------- -cprocstart PM_setBankA - -; Not used for VxDs - - ret - -cprocend - -;---------------------------------------------------------------------------- -; void PM_setBankAB(int bank) -;---------------------------------------------------------------------------- -cprocstart PM_setBankAB - -; Not used for VxDs - - ret - -cprocend - -;---------------------------------------------------------------------------- -; void PM_setCRTStart(int x,int y,int waitVRT) -;---------------------------------------------------------------------------- -cprocstart PM_setCRTStart - -; Not used for VxDs - - ret - -cprocend - -; Macro to delay briefly to ensure that enough time has elapsed between -; successive I/O accesses so that the device being accessed can respond -; to both accesses even on a very fast PC. - -ifdef USE_NASM -%macro DELAY 0 - jmp short $+2 - jmp short $+2 - jmp short $+2 -%endmacro -%macro IODELAYN 1 -%rep %1 - DELAY -%endrep -%endmacro -else -macro DELAY - jmp short $+2 - jmp short $+2 - jmp short $+2 -endm -macro IODELAYN N - rept N - DELAY - endm -endm -endif - -;---------------------------------------------------------------------------- -; uchar _PM_readCMOS(int index) -;---------------------------------------------------------------------------- -; Read the value of a specific CMOS register. We do this with both -; normal interrupts and NMI disabled. -;---------------------------------------------------------------------------- -cprocstart _PM_readCMOS - - ARG index:UINT - - push _bp - mov _bp,_sp - pushfd - mov al,[BYTE index] - or al,80h ; Add disable NMI flag - cli - out 70h,al - IODELAYN 5 - in al,71h - mov ah,al - xor al,al - IODELAYN 5 - out 70h,al ; Re-enable NMI - mov al,ah ; Return value in AL - popfd - pop _bp - ret - -cprocend - -;---------------------------------------------------------------------------- -; void _PM_writeCMOS(int index,uchar value) -;---------------------------------------------------------------------------- -; Read the value of a specific CMOS register. We do this with both -; normal interrupts and NMI disabled. -;---------------------------------------------------------------------------- -cprocstart _PM_writeCMOS - - ARG index:UINT, value:UCHAR - - push _bp - mov _bp,_sp - pushfd - mov al,[BYTE index] - or al,80h ; Add disable NMI flag - cli - out 70h,al - IODELAYN 5 - mov al,[value] - out 71h,al - xor al,al - IODELAYN 5 - out 70h,al ; Re-enable NMI - popfd - pop _bp - ret - -cprocend - -;---------------------------------------------------------------------------- -; double _ftol(double f) -;---------------------------------------------------------------------------- -; Calls to __ftol are generated by the Borland C++ compiler for code -; that needs to convert a floating point type to an integral type. -; -; Input: floating point number on the top of the '87. -; -; Output: a (signed or unsigned) long in EAX -; All other registers preserved. -;----------------------------------------------------------------------- -cprocstart _ftol - - LOCAL temp1:WORD, temp2:QWORD = LocalSize - - push ebp - mov ebp,esp - sub esp,LocalSize - - fstcw [temp1] ; save the control word - fwait - mov al,[BYTE temp1+1] - or [BYTE temp1+1],0Ch ; set rounding control to chop - fldcw [temp1] - fistp [temp2] ; convert to 64-bit integer - mov [BYTE temp1+1],al - fldcw [temp1] ; restore the control word - mov eax,[DWORD temp2] ; return LS 32 bits - mov edx,[DWORD temp2+4] ; MS 32 bits - - mov esp,ebp - pop ebp - ret - -cprocend - -;---------------------------------------------------------------------------- -; _PM_getPDB - Return the Page Table Directory Base address -;---------------------------------------------------------------------------- -cprocstart _PM_getPDB - - mov eax,cr3 - and eax,0FFFFF000h - ret - -cprocend - -;---------------------------------------------------------------------------- -; Flush the Translation Lookaside buffer -;---------------------------------------------------------------------------- -cprocstart PM_flushTLB - - wbinvd ; Flush the CPU cache - mov eax,cr3 - mov cr3,eax ; Flush the TLB - ret - -cprocend - -endcodeseg _pm - - END ; End of module |
