diff options
Diffstat (limited to 'src/VBox/Runtime/r0drv/os2/timerA-r0drv-os2.asm')
| -rw-r--r-- | src/VBox/Runtime/r0drv/os2/timerA-r0drv-os2.asm | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/os2/timerA-r0drv-os2.asm b/src/VBox/Runtime/r0drv/os2/timerA-r0drv-os2.asm new file mode 100644 index 00000000..474f8576 --- /dev/null +++ b/src/VBox/Runtime/r0drv/os2/timerA-r0drv-os2.asm @@ -0,0 +1,218 @@ +; $Id: timerA-r0drv-os2.asm $ +;; @file +; IPRT - DevHelp_VMGlobalToProcess, Ring-0 Driver, OS/2. +; + +; +; Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net> +; +; Permission is hereby granted, free of charge, to any person +; obtaining a copy of this software and associated documentation +; files (the "Software"), to deal in the Software without +; restriction, including without limitation the rights to use, +; copy, modify, merge, publish, distribute, sublicense, and/or sell +; copies of the Software, and to permit persons to whom the +; Software is furnished to do so, subject to the following +; conditions: +; +; The above copyright notice and this permission notice shall be +; included in all copies or substantial portions of the Software. +; +; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES +; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT +; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +; OTHER DEALINGS IN THE SOFTWARE. +; + + +;******************************************************************************* +;* Header Files * +;******************************************************************************* +%define RT_INCL_16BIT_SEGMENTS +%include "iprt/asmdefs.mac" +%include "iprt/err.mac" + + +;******************************************************************************* +;* External Symbols * +;******************************************************************************* +extern KernThunkStackTo32 +extern KernThunkStackTo16 +extern NAME(rtTimerOs2Tick) +extern NAME(RTErrConvertFromOS2) +BEGINDATA16 +extern NAME(g_fpfnDevHlp) + + +;******************************************************************************* +;* Defined Constants And Macros * +;******************************************************************************* +%define DevHlp_SetTimer 01dh +%define DevHlp_ResetTimer 01eh + + +BEGINCODE + +;; +; Arms the our OS/2 timer. +; +; @returns IPRT status code. +; +BEGINPROC_EXPORTED rtTimerOs2Arm + call KernThunkStackTo16 + push ebp + mov ebp, esp + + ; jump to the 16-bit code. + ;jmp far dword NAME(rtTimerOs2Arm_16) wrt CODE16 + db 066h + db 0eah + dw NAME(rtTimerOs2Arm_16) wrt CODE16 + dw CODE16 +BEGINCODE16 +GLOBALNAME rtTimerOs2Arm_16 + + ; setup and do the call + push ds + push es + mov dx, DATA16 + mov ds, dx + mov es, dx + + mov ax, NAME(rtTimerOs2TickAsm) wrt CODE16 + mov dl, DevHlp_SetTimer + call far [NAME(g_fpfnDevHlp)] + + pop es + pop ds + + ;jmp far dword NAME(rtTimerOs2Arm_32) wrt FLAT + db 066h + db 0eah + dd NAME(rtTimerOs2Arm_32) ;wrt FLAT + dw TEXT32 wrt FLAT +BEGINCODE +GLOBALNAME rtTimerOs2Arm_32 + jc .error + xor eax, eax +.done: + + leave + push eax + call KernThunkStackTo32 + pop eax + ret + + ; convert the error code. +.error: + and eax, 0ffffh + call NAME(RTErrConvertFromOS2) + jmp .done +ENDPROC rtTimerOs2Arm + + +;; +; Dearms the our OS/2 timer. +; +; @returns IPRT status code. +; +BEGINPROC_EXPORTED rtTimerOs2Dearm + call KernThunkStackTo16 + push ebp + mov ebp, esp + + ; jump to the 16-bit code. + ;jmp far dword NAME(rtTimerOs2Dearm_16) wrt CODE16 + db 066h + db 0eah + dw NAME(rtTimerOs2Dearm_16) wrt CODE16 + dw CODE16 +BEGINCODE16 +GLOBALNAME rtTimerOs2Dearm_16 + + ; setup and do the call + push ds + push es + mov dx, DATA16 + mov ds, dx + mov es, dx + + mov ax, NAME(rtTimerOs2TickAsm) wrt CODE16 + mov dl, DevHlp_ResetTimer + call far [NAME(g_fpfnDevHlp)] + + pop es + pop ds + + ;jmp far dword NAME(rtTimerOs2Dearm_32) wrt FLAT + db 066h + db 0eah + dd NAME(rtTimerOs2Dearm_32) ;wrt FLAT + dw TEXT32 wrt FLAT +BEGINCODE +GLOBALNAME rtTimerOs2Dearm_32 + jc .error + xor eax, eax +.done: + + ; epilogue + leave + push eax + call KernThunkStackTo32 + pop eax + ret + + ; convert the error code. +.error: + and eax, 0ffffh + call NAME(RTErrConvertFromOS2) + jmp .done +ENDPROC rtTimerOs2Dearm + + +BEGINCODE16 + +;; +; OS/2 timer tick callback. +; +BEGINPROC rtTimerOs2TickAsm + push ds + push es + push ecx + push edx + push eax + + mov ax, DATA32 wrt FLAT + mov ds, ax + mov es, ax + + ;jmp far dword NAME(rtTimerOs2TickAsm_32) wrt FLAT + db 066h + db 0eah + dd NAME(rtTimerOs2TickAsm_32) ;wrt FLAT + dw TEXT32 wrt FLAT +BEGINCODE +GLOBALNAME rtTimerOs2TickAsm_32 + call KernThunkStackTo32 + call NAME(rtTimerOs2Tick) + call KernThunkStackTo16 + + ;jmp far dword NAME(rtTimerOs2TickAsm_16) wrt CODE16 + db 066h + db 0eah + dw NAME(rtTimerOs2TickAsm_16) wrt CODE16 + dw CODE16 +BEGINCODE16 +GLOBALNAME rtTimerOs2TickAsm_16 + + pop eax + pop edx + pop ecx + pop es + pop ds + retf +ENDPROC rtTimerOs2TickAsm |