| 1 | ; $Id: timerA-r0drv-os2.asm 77120 2019-02-01 15:08:46Z vboxsync $
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| 2 | ;; @file
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| 3 | ; IPRT - DevHelp_VMGlobalToProcess, Ring-0 Driver, OS/2.
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| 4 | ;
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| 5 |
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| 6 | ;
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| 7 | ; Contributed by knut st. osmundsen.
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| 8 | ;
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| 9 | ; Copyright (C) 2007-2019 Oracle Corporation
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| 10 | ;
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| 11 | ; This file is part of VirtualBox Open Source Edition (OSE), as
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| 12 | ; available from http://www.virtualbox.org. This file is free software;
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| 13 | ; you can redistribute it and/or modify it under the terms of the GNU
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| 14 | ; General Public License (GPL) as published by the Free Software
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| 15 | ; Foundation, in version 2 as it comes in the "COPYING" file of the
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| 16 | ; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 17 | ; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 18 | ;
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| 19 | ; The contents of this file may alternatively be used under the terms
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| 20 | ; of the Common Development and Distribution License Version 1.0
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| 21 | ; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 22 | ; VirtualBox OSE distribution, in which case the provisions of the
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| 23 | ; CDDL are applicable instead of those of the GPL.
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| 24 | ;
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| 25 | ; You may elect to license modified versions of this file under the
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| 26 | ; terms and conditions of either the GPL or the CDDL or both.
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| 27 | ;
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| 28 | ; --------------------------------------------------------------------
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| 29 | ;
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| 30 | ; This code is based on:
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| 31 | ;
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| 32 | ; Copyright (c) 2007 knut st. osmundsen <[email protected]>
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| 33 | ;
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| 34 | ; Permission is hereby granted, free of charge, to any person
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| 35 | ; obtaining a copy of this software and associated documentation
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| 36 | ; files (the "Software"), to deal in the Software without
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| 37 | ; restriction, including without limitation the rights to use,
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| 38 | ; copy, modify, merge, publish, distribute, sublicense, and/or sell
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| 39 | ; copies of the Software, and to permit persons to whom the
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| 40 | ; Software is furnished to do so, subject to the following
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| 41 | ; conditions:
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| 42 | ;
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| 43 | ; The above copyright notice and this permission notice shall be
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| 44 | ; included in all copies or substantial portions of the Software.
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| 45 | ;
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| 46 | ; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 47 | ; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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| 48 | ; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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| 49 | ; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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| 50 | ; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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| 51 | ; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 52 | ; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 53 | ; OTHER DEALINGS IN THE SOFTWARE.
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| 54 | ;
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| 55 |
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| 56 |
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| 57 | ;*******************************************************************************
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| 58 | ;* Header Files *
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| 59 | ;*******************************************************************************
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| 60 | %define RT_INCL_16BIT_SEGMENTS
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| 61 | %include "iprt/asmdefs.mac"
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| 62 | %include "iprt/err.mac"
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| 63 |
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| 64 |
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| 65 | ;*******************************************************************************
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| 66 | ;* External Symbols *
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| 67 | ;*******************************************************************************
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| 68 | extern KernThunkStackTo32
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| 69 | extern KernThunkStackTo16
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| 70 | extern NAME(rtTimerOs2Tick)
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| 71 | extern NAME(RTErrConvertFromOS2)
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| 72 | BEGINDATA16
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| 73 | extern NAME(g_fpfnDevHlp)
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| 74 |
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| 75 |
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| 76 | ;*******************************************************************************
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| 77 | ;* Defined Constants And Macros *
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| 78 | ;*******************************************************************************
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| 79 | %define DevHlp_SetTimer 01dh
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| 80 | %define DevHlp_ResetTimer 01eh
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| 81 |
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| 82 |
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| 83 | BEGINCODE
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| 84 |
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| 85 | ;;
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| 86 | ; Arms the our OS/2 timer.
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| 87 | ;
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| 88 | ; @returns IPRT status code.
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| 89 | ;
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| 90 | BEGINPROC_EXPORTED rtTimerOs2Arm
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| 91 | call KernThunkStackTo16
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| 92 | push ebp
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| 93 | mov ebp, esp
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| 94 |
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| 95 | ; jump to the 16-bit code.
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| 96 | ;jmp far dword NAME(rtTimerOs2Arm_16) wrt CODE16
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| 97 | db 066h
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| 98 | db 0eah
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| 99 | dw NAME(rtTimerOs2Arm_16) wrt CODE16
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| 100 | dw CODE16
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| 101 | BEGINCODE16
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| 102 | GLOBALNAME rtTimerOs2Arm_16
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| 103 |
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| 104 | ; setup and do the call
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| 105 | push ds
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| 106 | push es
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| 107 | mov dx, DATA16
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| 108 | mov ds, dx
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| 109 | mov es, dx
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| 110 |
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| 111 | mov ax, NAME(rtTimerOs2TickAsm) wrt CODE16
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| 112 | mov dl, DevHlp_SetTimer
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| 113 | call far [NAME(g_fpfnDevHlp)]
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| 114 |
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| 115 | pop es
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| 116 | pop ds
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| 117 |
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| 118 | ;jmp far dword NAME(rtTimerOs2Arm_32) wrt FLAT
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| 119 | db 066h
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| 120 | db 0eah
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| 121 | dd NAME(rtTimerOs2Arm_32) ;wrt FLAT
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| 122 | dw TEXT32 wrt FLAT
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| 123 | BEGINCODE
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| 124 | GLOBALNAME rtTimerOs2Arm_32
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| 125 | jc .error
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| 126 | xor eax, eax
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| 127 | .done:
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| 128 |
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| 129 | leave
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| 130 | push eax
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| 131 | call KernThunkStackTo32
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| 132 | pop eax
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| 133 | ret
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| 134 |
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| 135 | ; convert the error code.
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| 136 | .error:
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| 137 | and eax, 0ffffh
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| 138 | call NAME(RTErrConvertFromOS2)
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| 139 | jmp .done
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| 140 | ENDPROC rtTimerOs2Arm
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| 141 |
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| 142 |
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| 143 | ;;
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| 144 | ; Dearms the our OS/2 timer.
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| 145 | ;
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| 146 | ; @returns IPRT status code.
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| 147 | ;
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| 148 | BEGINPROC_EXPORTED rtTimerOs2Dearm
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| 149 | call KernThunkStackTo16
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| 150 | push ebp
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| 151 | mov ebp, esp
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| 152 |
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| 153 | ; jump to the 16-bit code.
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| 154 | ;jmp far dword NAME(rtTimerOs2Dearm_16) wrt CODE16
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| 155 | db 066h
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| 156 | db 0eah
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| 157 | dw NAME(rtTimerOs2Dearm_16) wrt CODE16
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| 158 | dw CODE16
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| 159 | BEGINCODE16
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| 160 | GLOBALNAME rtTimerOs2Dearm_16
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| 161 |
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| 162 | ; setup and do the call
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| 163 | push ds
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| 164 | push es
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| 165 | mov dx, DATA16
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| 166 | mov ds, dx
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| 167 | mov es, dx
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| 168 |
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| 169 | mov ax, NAME(rtTimerOs2TickAsm) wrt CODE16
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| 170 | mov dl, DevHlp_ResetTimer
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| 171 | call far [NAME(g_fpfnDevHlp)]
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| 172 |
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| 173 | pop es
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| 174 | pop ds
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| 175 |
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| 176 | ;jmp far dword NAME(rtTimerOs2Dearm_32) wrt FLAT
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| 177 | db 066h
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| 178 | db 0eah
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| 179 | dd NAME(rtTimerOs2Dearm_32) ;wrt FLAT
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| 180 | dw TEXT32 wrt FLAT
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| 181 | BEGINCODE
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| 182 | GLOBALNAME rtTimerOs2Dearm_32
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| 183 | jc .error
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| 184 | xor eax, eax
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| 185 | .done:
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| 186 |
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| 187 | ; epilogue
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| 188 | leave
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| 189 | push eax
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| 190 | call KernThunkStackTo32
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| 191 | pop eax
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| 192 | ret
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| 193 |
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| 194 | ; convert the error code.
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| 195 | .error:
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| 196 | and eax, 0ffffh
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| 197 | call NAME(RTErrConvertFromOS2)
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| 198 | jmp .done
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| 199 | ENDPROC rtTimerOs2Dearm
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| 200 |
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| 201 |
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| 202 | BEGINCODE16
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| 203 |
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| 204 | ;;
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| 205 | ; OS/2 timer tick callback.
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| 206 | ;
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| 207 | BEGINPROC rtTimerOs2TickAsm
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| 208 | push ds
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| 209 | push es
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| 210 | push ecx
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| 211 | push edx
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| 212 | push eax
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| 213 |
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| 214 | mov ax, DATA32 wrt FLAT
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| 215 | mov ds, ax
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| 216 | mov es, ax
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| 217 |
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| 218 | ;jmp far dword NAME(rtTimerOs2TickAsm_32) wrt FLAT
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| 219 | db 066h
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| 220 | db 0eah
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| 221 | dd NAME(rtTimerOs2TickAsm_32) ;wrt FLAT
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| 222 | dw TEXT32 wrt FLAT
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| 223 | BEGINCODE
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| 224 | GLOBALNAME rtTimerOs2TickAsm_32
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| 225 | call KernThunkStackTo32
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| 226 | call NAME(rtTimerOs2Tick)
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| 227 | call KernThunkStackTo16
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| 228 |
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| 229 | ;jmp far dword NAME(rtTimerOs2TickAsm_16) wrt CODE16
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| 230 | db 066h
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| 231 | db 0eah
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| 232 | dw NAME(rtTimerOs2TickAsm_16) wrt CODE16
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| 233 | dw CODE16
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| 234 | BEGINCODE16
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| 235 | GLOBALNAME rtTimerOs2TickAsm_16
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| 236 |
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| 237 | pop eax
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| 238 | pop edx
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| 239 | pop ecx
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| 240 | pop es
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| 241 | pop ds
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| 242 | retf
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| 243 | ENDPROC rtTimerOs2TickAsm
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