| 1 | ; $Id: startup.inc,v 1.1.1.1 2003/07/02 13:56:56 eleph Exp $
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| 2 | ;*
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| 3 | ;* Assembly macro and constant definitions
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| 4 | ;*
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| 5 | ;* (C) 2000-2002 InnoTek Systemberatung GmbH
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| 6 | ;* (C) 2000-2001 Sander van Leeuwen (sandervl@xs4all.nl)
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| 7 | ;*
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| 8 | ;* This program is free software; you can redistribute it and/or
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| 9 | ;* modify it under the terms of the GNU General Public License as
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| 10 | ;* published by the Free Software Foundation; either version 2 of
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| 11 | ;* the License, or (at your option) any later version.
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| 12 | ;*
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| 13 | ;* This program is distributed in the hope that it will be useful,
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| 14 | ;* but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | ;* GNU General Public License for more details.
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| 17 | ;*
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| 18 | ;* You should have received a copy of the GNU General Public
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| 19 | ;* License along with this program; if not, write to the Free
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| 20 | ;* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
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| 21 | ;* USA.
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| 22 | ;*
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| 23 |
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| 24 |
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| 25 | ; MACRO'S
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| 26 | ;*******************************************************************************
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| 27 | ;enter a 16:32 far function
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| 28 | ;*******************************************************************************
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| 29 | enter32 MACRO
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| 30 | push bp
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| 31 | mov bp, sp
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| 32 | push ds
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| 33 | mov ax, DATA16
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| 34 | mov ds, ax
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| 35 | ENDM
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| 36 | ;*******************************************************************************
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| 37 | ;return to 16:32 far caller
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| 38 | ;*******************************************************************************
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| 39 | ret32 MACRO
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| 40 | pop ds
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| 41 | pop bp
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| 42 | db 66h ; Force next instruction 32-bit
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| 43 | ret
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| 44 | ENDM
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| 45 |
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| 46 | enter16 MACRO
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| 47 | push bp
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| 48 | mov bp, sp
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| 49 | ENDM
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| 50 | ret16 MACRO
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| 51 | pop bp
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| 52 | ret
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| 53 | ENDM
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| 54 |
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| 55 |
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| 56 | IFDEF KEE
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| 57 | ;pushfd/popfd trashed by fucking BUGY KernThunkStackTo32
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| 58 | ;fix idea by zuko
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| 59 |
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| 60 | ;;******************************************************************************
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| 61 | ;;Need to preserve fs:ebx!! (all other registers must be saved by the caller)
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| 62 | ;;******************************************************************************
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| 63 | DevThunkStackTo32 MACRO
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| 64 | push stacksel
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| 65 | push stackbase
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| 66 |
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| 67 | push edx
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| 68 | mov edx, ss
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| 69 | mov stacksel, edx
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| 70 | pushfd
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| 71 |
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| 72 | call KernThunkStackTo32
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| 73 | popfd
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| 74 | mov stackbase, edx
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| 75 | pop edx ;trashed by KernThunkStackTo32
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| 76 | xor eax, eax ; mark success
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| 77 | ENDM
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| 78 | ;;******************************************************************************
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| 79 | ;;******************************************************************************
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| 80 | DevThunkStackTo32_Int MACRO
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| 81 | push eax
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| 82 | push edx
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| 83 | pushfd
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| 84 | call KernThunkStackTo32
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| 85 | popfd
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| 86 | pop edx ;trashed by KernThunkStackTo32
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| 87 | pop eax ;trashed by KernThunkStackTo32
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| 88 | ENDM
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| 89 | ;;******************************************************************************
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| 90 | ;;******************************************************************************
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| 91 | DevThunkStackTo16 MACRO
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| 92 | push edx
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| 93 | push eax
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| 94 | pushfd
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| 95 | call KernThunkStackTo16
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| 96 | popfd
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| 97 | pop eax ;trashed by KernThunkStackTo16
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| 98 | pop edx ;trashed by KernThunkStackTo16 when called in interrupt context
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| 99 |
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| 100 | pop stackbase
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| 101 | pop stacksel
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| 102 | ENDM
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| 103 |
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| 104 | ;;******************************************************************************
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| 105 | ;;******************************************************************************
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| 106 | DevThunkStackTo16_Int MACRO
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| 107 | push edx
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| 108 | push eax
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| 109 | pushfd
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| 110 | call KernThunkStackTo16
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| 111 | popfd
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| 112 | pop eax ;trashed by KernThunkStackTo16
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| 113 | pop edx ;trashed by KernThunkStackTo16 when called in interrupt context
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| 114 | ENDM
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| 115 | ;;******************************************************************************
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| 116 | ;;******************************************************************************
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| 117 |
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| 118 | ELSE
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| 119 |
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| 120 | ;;******************************************************************************
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| 121 | ;;Need to preserve fs:ebx!! (all other registers must be saved by the caller)
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| 122 | ;;******************************************************************************
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| 123 | DevThunkStackTo32 MACRO
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| 124 | LOCAL @@stackok, @@stackchangeend
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| 125 |
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| 126 | ;;;; int 3
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| 127 |
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| 128 | pushfd
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| 129 | cli
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| 130 | pop dword ptr [cpuflags]
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| 131 |
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| 132 | ;check if kernel DS selector DPL == 3; if so, change to 0
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| 133 | call FixSelDPL
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| 134 |
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| 135 | ;allocate private stack
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| 136 | push fs
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| 137 | call StackAlloc
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| 138 | pop fs ;trashed by StackAlloc
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| 139 | mov dword ptr [fInitStack], 1
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| 140 |
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| 141 | cmp eax, 0
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| 142 | jne @@stackok
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| 143 |
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| 144 | IFDEF DEBUG
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| 145 | int 3 ;this is very fatal
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| 146 | ENDIF
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| 147 | call RestoreSelDPL
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| 148 | mov eax, -1 ;mark failure
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| 149 |
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| 150 | push dword ptr [cpuflags]
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| 151 | popfd
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| 152 | jmp short @@stackchangeend
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| 153 |
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| 154 | @@stackok:
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| 155 | ;stack ptr in eax
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| 156 | call dword ptr [intSwitchStack]
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| 157 |
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| 158 | push dword ptr [cpuflags]
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| 159 | popfd
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| 160 |
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| 161 | mov eax, 0 ;mark success
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| 162 | @@stackchangeend:
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| 163 | ENDM
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| 164 |
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| 165 | ;;******************************************************************************
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| 166 | ;;******************************************************************************
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| 167 | DevThunkStackTo32_Int MACRO
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| 168 | LOCAL @@cont32
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| 169 |
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| 170 | cmp dword ptr [fInitStack], 0
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| 171 | je @@cont32
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| 172 |
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| 173 | ;;;; int 3
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| 174 | pushfd
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| 175 | cli
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| 176 | pop dword ptr [cpuflags]
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| 177 |
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| 178 | mov dword ptr [tempeax], eax ;save eax
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| 179 |
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| 180 | pop eax ;pop saved flat stack pointer
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| 181 |
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| 182 | ;and switch back to our flat stack again
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| 183 | call dword ptr [intSwitchStack]
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| 184 |
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| 185 | mov eax, dword ptr [tempeax] ;restore eax
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| 186 | push dword ptr [cpuflags]
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| 187 | popfd
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| 188 |
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| 189 | @@cont32:
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| 190 | ENDM
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| 191 |
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| 192 | ;;******************************************************************************
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| 193 | ;;******************************************************************************
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| 194 | DevThunkStackTo16 MACRO
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| 195 | ;;;; int 3
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| 196 |
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| 197 | pushfd
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| 198 | cli
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| 199 | pop dword ptr [cpuflags]
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| 200 |
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| 201 | mov dword ptr [tempeax], eax ;save eax
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| 202 | mov dword ptr [tempesi], esi ;save esi
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| 203 |
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| 204 | mov esi, esp
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| 205 | xor eax, eax ;switch to 16 bits stack
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| 206 | call dword ptr [intSwitchStack]
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| 207 |
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| 208 | mov eax, esi
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| 209 | call StackFree
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| 210 |
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| 211 | call RestoreSelDPL
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| 212 |
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| 213 | mov eax, dword ptr [tempeax]
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| 214 | mov esi, dword ptr [tempesi]
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| 215 |
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| 216 | push dword ptr [cpuflags]
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| 217 | popfd
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| 218 |
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| 219 | ENDM
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| 220 |
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| 221 | ;;******************************************************************************
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| 222 | ;;******************************************************************************
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| 223 | DevThunkStackTo16_Int MACRO
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| 224 | LOCAL @@cont16
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| 225 |
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| 226 | cmp dword ptr [fInitStack], 0
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| 227 | je @@cont16
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| 228 |
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| 229 | ;;;; int 3
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| 230 | pushfd
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| 231 | cli
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| 232 | pop dword ptr [cpuflags]
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| 233 |
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| 234 | mov dword ptr [tempeax], eax ;save eax
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| 235 | mov dword ptr [tempesi], esi ;save esi
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| 236 | mov esi, esp
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| 237 | xor eax, eax ;switch to 16 bits stack
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| 238 | call dword ptr [intSwitchStack]
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| 239 | push esi ;flat stack ptr (popped before switching back to flat)
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| 240 |
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| 241 | mov eax, dword ptr [tempeax]
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| 242 | mov esi, dword ptr [tempesi]
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| 243 | push dword ptr [cpuflags]
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| 244 | popfd
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| 245 |
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| 246 | @@cont16:
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| 247 | ENDM
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| 248 |
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| 249 | ENDIF ;KEE
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| 250 |
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| 251 | IFDEF FLATSTACK
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| 252 | ;*******************************************************************************
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| 253 | ;enter a function that needs to switch to a 16 bits stack
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| 254 | ;*******************************************************************************
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| 255 | enterKEERM MACRO
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| 256 | push ebp
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| 257 | mov ebp, esp
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| 258 | push ds
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| 259 | push es
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| 260 | push ebx
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| 261 | push ecx
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| 262 | push edx
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| 263 | push esi
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| 264 | push edi
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| 265 |
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| 266 | ;to access the parameters on the 32 bits stack, once we've switched
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| 267 | mov edi, ebp
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| 268 |
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| 269 | DevThunkStackTo16_Int
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| 270 | ENDM
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| 271 | ;*******************************************************************************
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| 272 | ;switch stack from 16 bits to 32 bits and return
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| 273 | ;*******************************************************************************
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| 274 | retKEERM MACRO
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| 275 | DevThunkStackTo32_Int
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| 276 | pop edi
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| 277 | pop esi
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| 278 | pop edx
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| 279 | pop ecx
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| 280 | pop ebx
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| 281 | pop es
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| 282 | pop ds
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| 283 | pop ebp
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| 284 | ret
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| 285 | ENDM
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| 286 |
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| 287 | ;;******************************************************************************
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| 288 | ;;******************************************************************************
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| 289 |
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| 290 | ENDIF
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| 291 |
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| 292 | ;Constants and structure definitions
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| 293 |
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| 294 | DevHlp_VirtToLin EQU 5Bh
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| 295 | DevHlp_VMLock EQU 55h
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| 296 |
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| 297 | ; Status word masks
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| 298 | STERR EQU 8000H ; Bit 15 - Error
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| 299 | STINTER EQU 0400H ; Bit 10 - Interim character
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| 300 | STBUI EQU 0200H ; Bit 9 - Busy
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| 301 | STDON EQU 0100H ; Bit 8 - Done
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| 302 | STECODE EQU 00FFH ; Error code
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| 303 |
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| 304 | ; Definition of the request packet header.
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| 305 |
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| 306 | reqPacket struc
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| 307 | reqLenght db ?
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| 308 | reqUnit db ?
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| 309 | reqCommand db ?
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| 310 | reqStatus dw ?
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| 311 | reqFlags db ?
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| 312 | db 3 dup (?) ; Reserved field
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| 313 | reqLink dd ?
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| 314 | reqPacket ends
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| 315 |
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| 316 | rpInitIn struc
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| 317 | i_rph db size reqPacket dup (?)
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| 318 | i_unit db ?
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| 319 | i_devHelp dd ?
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| 320 | i_initArgs dd ?
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| 321 | i_driveNum db ?
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| 322 | rpInitIn ends
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| 323 |
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| 324 | rpInitOut struc
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| 325 | o_rph db size reqPacket dup (?)
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| 326 | o_unit db ?
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| 327 | o_codeend dw ?
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| 328 | o_dataend dw ?
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| 329 | o_bpbarray dd ?
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| 330 | o_status dw ?
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| 331 | rpInitOut ends
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| 332 |
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| 333 |
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| 334 | ; definitions for 16 bits resource manager buffers
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| 335 | ; (also in rm.hpp!!)
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| 336 | MAXSIZE_RMNodeData EQU 1024
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| 337 | MAXSIZE_RMResources EQU 128
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| 338 | MAXSIZE_RMHandleList EQU 128
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| 339 | MAXSIZE_RMResourceList EQU 256
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