diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/qnx/_mtrrqnx.asm')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/qnx/_mtrrqnx.asm | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/qnx/_mtrrqnx.asm b/board/MAI/bios_emulator/scitech/src/pm/qnx/_mtrrqnx.asm deleted file mode 100644 index 5a3fe105ec..0000000000 --- a/board/MAI/bios_emulator/scitech/src/pm/qnx/_mtrrqnx.asm +++ /dev/null @@ -1,226 +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: NASM -;* Environment: QNX -;* -;* Description: Assembler support routines for the Memory Type Range Register -;* (MTRR) module for QNX. -;* -;**************************************************************************** - - IDEAL - -include "scitech.mac" ; Memory model macros - -header _mtrrqnx ; Set up memory model - -begdataseg _mtrrqnx ; Start of code segment - -ifdef USE_NASM -%define R0_FLUSH_TLB 0 -%define R0_SAVE_CR4 1 -%define R0_RESTORE_CR4 2 -%define R0_READ_MSR 3 -%define R0_WRITE_MSR 4 -else -R0_FLUSH_TLB EQU 0 -R0_SAVE_CR4 EQU 1 -R0_RESTORE_CR4 EQU 2 -R0_READ_MSR EQU 3 -R0_WRITE_MSR EQU 4 -endif - -cpublic _PM_R0 -_PM_R0_service dd 0 -_PM_R0_reg dd 0 -_PM_R0_eax dd 0 -_PM_R0_edx dd 0 - -enddataseg _mtrrqnx ; Start of code segment - -begcodeseg _mtrrqnx ; Start of code segment - -P586 - -;---------------------------------------------------------------------------- -; ulong _MTRR_disableInt(void); -;---------------------------------------------------------------------------- -; Return processor interrupt status and disable interrupts. -;---------------------------------------------------------------------------- -cprocstart _MTRR_disableInt - - pushfd ; Put flag word on stack -; cli ; Disable interrupts! - pop eax ; deposit flag word in return register - ret - -cprocend - -;---------------------------------------------------------------------------- -; void _MTRR_restoreInt(ulong ps); -;---------------------------------------------------------------------------- -; Restore processor interrupt status. -;---------------------------------------------------------------------------- -cprocstart _MTRR_restoreInt - - ARG ps:ULONG - - push ebp - mov ebp,esp ; Set up stack frame - push [ULONG ps] - popfd ; Restore processor status (and interrupts) - pop ebp - 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 _PM_ring0_isr(void); -;---------------------------------------------------------------------------- -; Ring 0 clock interrupt handler that we use to execute the MTRR support -; code. -;---------------------------------------------------------------------------- -cprocnear _PM_ring0_isr - -;-------------------------------------------------------- -; void PM_flushTLB(void); -;-------------------------------------------------------- - pushad - cmp [DWORD _PM_R0_service],R0_FLUSH_TLB - jne @@1 - wbinvd ; Flush the CPU cache - mov eax,cr3 - mov cr3,eax ; Flush the TLB - jmp @@Exit - -;-------------------------------------------------------- -; ulong _MTRR_saveCR4(void); -;-------------------------------------------------------- -@@1: cmp [DWORD _PM_R0_service],R0_SAVE_CR4 - jne @@2 - -; Save value of CR4 and clear Page Global Enable (bit 7) - - mov ebx,cr4 - mov eax,ebx - and al,7Fh - mov cr4,eax - -; Disable and flush caches - - mov eax,cr0 - or eax,40000000h - wbinvd - mov cr0,eax - wbinvd - -; Return value from CR4 - - mov [_PM_R0_reg],ebx - jmp @@Exit - -;-------------------------------------------------------- -; void _MTRR_restoreCR4(ulong cr4Val) -;-------------------------------------------------------- -@@2: cmp [DWORD _PM_R0_service],R0_RESTORE_CR4 - jne @@3 - - mov eax,cr0 - and eax,0BFFFFFFFh - mov cr0,eax - mov eax,[_PM_R0_reg] - mov cr4,eax - jmp @@Exit - -;-------------------------------------------------------- -; void _MTRR_readMSR(int reg, ulong FAR *eax, ulong FAR *edx); -;-------------------------------------------------------- -@@3: cmp [DWORD _PM_R0_service],R0_READ_MSR - jne @@4 - - mov ecx,[_PM_R0_reg] - rdmsr - mov [_PM_R0_eax],eax - mov [_PM_R0_edx],edx - jmp @@Exit - -;-------------------------------------------------------- -; void _MTRR_writeMSR(int reg, ulong eax, ulong edx); -;-------------------------------------------------------- -@@4: cmp [DWORD _PM_R0_service],R0_WRITE_MSR - jne @@Exit - - mov ecx,[_PM_R0_reg] - mov eax,[_PM_R0_eax] - mov edx,[_PM_R0_edx] - wrmsr - jmp @@Exit - -@@Exit: mov [DWORD _PM_R0_service],-1 - popad - mov eax,0 - retf - -cprocend - -endcodeseg _mtrrqnx - - END ; End of module |
