Source code of Windows XP (NT5)
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;Thunk Compiler Version 1.8 Dec 14 1994 14:53:05
;File Compiled Thu Aug 29 16:36:45 1996
;Command Line: ..\..\..\dev\tools\binr\thunk.exe -NC THUNK16B -o dlgthk ..\dlgthk.thk
TITLE $dlgthk.asm
.386
OPTION READONLY
OPTION OLDSTRUCTS
IFNDEF IS_16
IFNDEF IS_32
%out command line error: specify one of -DIS_16 -DIS_32
.err
ENDIF
ENDIF
IFDEF IS_32
IFDEF IS_16
%out command line error: you can't specify both -DIS_16 and -DIS_32
.err
ENDIF
.model FLAT,STDCALL
externDef STDCALL DlgThunkInit@4:near32
externDef STDCALL ThkPathQualify@4:near32
externDef STDCALL ThkParseFile@8:near32
externDef STDCALL GetFileTitleI@16:near32
externDef STDCALL ThkCommDlgExtendedError@0:near32
externDef STDCALL ThkChooseFont@4:near32
externDef STDCALL ThkChooseColor@4:near32
externDef STDCALL ThkGetSaveFileName@4:near32
externDef STDCALL ThkGetOpenFileName@4:near32
externDef C Common32ThkLS:near32
.data
pfndlgthkCommon equ <pfndlgthkTable>
public pfndlgthkTable
pfndlgthkTable dword 0 ; segmented common entry point
dlgthkConnectionNameLS db 'dlgthkConnectionDataLS',0
public dlgthkLSChecksum32
dlgthkLSChecksum32 equ 0b53eh
.code
;===========================================================================
; Worker routine to pass additional, internal params to the
; init routine in kernel32.
;
; Calling sequence:
;
; dlgthkConnectPeerLS proto near pszDll16:dword, pszDll32:dword
;
; pszDll16 db 'foo16.dll',0
; pszDll32 db 'foo32.dll',0
;
; invoke dlgthkConnectPeerLS, ADDR pszDll16, ADDR pszDll32
; or eax,eax
; jz failed
; ;success
;
public dlgthkConnectPeerLS@8
dlgthkConnectPeerLS@8:
externDef ThunkInitLS@20:near32
pop edx ;Shift return address
push dword ptr 0b53eh ;Checksum
push offset dlgthkConnectionNameLS ;Exported from peer
push offset pfndlgthkCommon ;Output param
push edx
jmp ThunkInitLS@20
;===========================================================================
; This is the table of 32-bit entry points.
DlgThunkInit@4 label near32
mov cl,0 ; offset in jump table
mov edx, (1 SHL 16) + 0
PreEntryCommon32_1:
mov ch,0
jmp EntryCommon32
ThkPathQualify@4 label near32
mov cl,2 ; offset in jump table
mov edx, (1 SHL 16) + 0
jmp PreEntryCommon32_1
ThkParseFile@8 label near32
mov cl,4 ; offset in jump table
mov edx, (2 SHL 16) + 0
jmp PreEntryCommon32_1
GetFileTitleI@16 label near32
mov cl,6 ; offset in jump table
mov edx, (4 SHL 16) + 65535
jmp PreEntryCommon32_1
ThkCommDlgExtendedError@0 label near32
mov cl,8 ; offset in jump table
mov edx, (0 SHL 16) + 0
jmp PreEntryCommon32_1
ThkChooseFont@4 label near32
mov cl,10 ; offset in jump table
mov edx, (1 SHL 16) + 0
jmp PreEntryCommon32_1
ThkChooseColor@4 label near32
mov cl,12 ; offset in jump table
mov edx, (1 SHL 16) + 0
jmp PreEntryCommon32_1
ThkGetSaveFileName@4 label near32
mov cl,14 ; offset in jump table
mov edx, (1 SHL 16) + 0
jmp PreEntryCommon32_1
ThkGetOpenFileName@4 label near32
mov cl,16 ; offset in jump table
mov edx, (1 SHL 16) + 0
jmp PreEntryCommon32_1
;===========================================================================
; This is the common setup code for 32=>16 thunks.
;
; Entry: cx = offset in thunk table
; dx = signed error return value
; edx.hi = # of parameters (4 bytes per parameter)
;
; Exit: eax = 16:16 address of target common entry point
;
align
EntryCommon32:
ifdef FSAVEALL
.err ;32->16 thunks require FSAVEALL, else don't use -r
endif
mov eax, pfndlgthkCommon
jmp Common32ThkLS
THK_CODE32_SIZE label byte
ELSE ; IS_16
OPTION SEGMENT:USE16
.model LARGE,PASCAL
include thk.inc
include winerror.inc
include win31err.inc
include dlgthk.inc
externDef DlgThunkInit:far16
externDef PathQualify:far16
externDef ParseFileFrom32:far16
externDef GetFileTitleI:far16
externDef CommDlgExtendedError:far16
externDef ChooseFont:far16
externDef ChooseColor:far16
externDef GetSaveFileName:far16
externDef GetOpenFileName:far16
externDef UnMapStackAndMakeFlat:far16
externDef LinearToSelectorOffset:far16
externDef MapLS:far16
externDef UnmapLS:far16
externDef StackLinearToSegmented:far16
externDef SelectorOffsetToLinear:far16
externDef MapSL:far16
externDef AllocCallback:far16
externDef GetCSAlias:far16
externDef FreeCSAlias:far16
externDef OutputDebugString:far16
externDef SetLastError:far16
externDef THUNK16BCodeData:word
externDef FlatData:word
externDef dlgthkTable:dword
externDef dlgthkCommon:far16
externDef LocalAlloc:far16
externDef LocalLock:far16
externDef LocalUnlock:far16
externDef LocalFree:far16
MYLOCALLOCK macro x
push ecx
push ebx
push x
call LocalLock
pop ebx
pop ecx
endm
externDef T_DlgThunkInit:near16
externDef T_ThkPathQualify:near16
externDef T_ThkParseFile:near16
externDef T_GetFileTitleI:near16
externDef T_ThkCommDlgExtendedError:near16
externDef T_ThkChooseFont:near16
externDef T_ThkChooseColor:near16
externDef T_ThkGetSaveFileName:near16
externDef T_ThkGetOpenFileName:near16
DATA16 SEGMENT WORD USE16 PUBLIC 'DATA'
DATA16 ENDS
.code THUNK16B
public dlgthkConnectionDataLS ; export in def file
dlgthkConnectionDataLS dd 0b53eh ;Checksum
dw offset dlgthkCommon
dw seg dlgthkCommon
;===========================================================================
; This is a jump table to API-specific 16-bit thunk code.
; Each entry is a word.
align
dlgthkTable16 label word
dw offset T_DlgThunkInit
dw offset T_ThkPathQualify
dw offset T_ThkParseFile
dw offset T_GetFileTitleI
dw offset T_ThkCommDlgExtendedError
dw offset T_ThkChooseFont
dw offset T_ThkChooseColor
dw offset T_ThkGetSaveFileName
dw offset T_ThkGetOpenFileName
;===========================================================================
; This is the common 16-bit entry point for 32=>16 thunks. It:
; 1. saves sp in bp
; 2. sets ds
; 3. jumps to API-specific thunk code
;
; Entry: di == jump table offset
; ss:sp == 16-bit stack pointer
align
dlgthkCommon label far16
mov bp,sp ; save sp in bp
mov ax,seg DATA16 ; set ds
mov ds,ax
jmp word ptr cs:dlgthkTable16[di] ; select specific thunk
;===========================================================================
; Macro sets extended error code if Win16 API returned an
; error value.
;
; Inputs:
; errret: 32-bit API return value that signals an error
; errle: 32-bit extended error code to pass to SetLastError()
; exitlbl: The Exit_n label to jump to.
; eax: The 32-bit API return value.
;
ERRCHK_EXIT macro errret,errle,exitlbl
cmp eax,&errret&
jne &exitlbl&
push eax ;Save return value.
pushd &errle& ;ARG: SetLastError(errorcode)
call SetLastError
pop eax ;Restore return value.
jmp &exitlbl&
endm ;ERRCHK_EXIT
;===========================================================================
; Common routines to restore the stack and registers
; and return to 32-bit code. There is one for each
; size of 32-bit parameter list in this script.
align
Exit_0:
;--- No error checking.
mov bl,0 ; parameter byte count
mov sp,bp ; point to ret addr
retd ; 16:32 ret to dispatcher
align
Exit_4:
;--- No error checking.
mov bl,4 ; parameter byte count
mov sp,bp ; point to ret addr
retd ; 16:32 ret to dispatcher
align
Exit_8:
;--- No error checking.
mov bl,8 ; parameter byte count
mov sp,bp ; point to ret addr
retd ; 16:32 ret to dispatcher
align
Exit_16:
;--- No error checking.
mov bl,16 ; parameter byte count
mov sp,bp ; point to ret addr
retd ; 16:32 ret to dispatcher
;===========================================================================
T_DlgThunkInit label near16
; bp+40 pCB32Tab
APILOGLS DlgThunkInit
;-------------------------------------
; create new call frame and make the call
; pCB32Tab from: unsigned long
push dword ptr [bp+40] ; to unsigned long
call DlgThunkInit ; call 16-bit version
; return code void --> void
; no conversion needed
;-------------------------------------
;--- No error checking.
jmp Exit_4
;===========================================================================
T_ThkPathQualify label near16
; bp+40 lpszFile
APILOGLS ThkPathQualify
;-------------------------------------
; Temp storage
xor eax,eax
push eax ; ptr param #1 lpszFile
;-------------------------------------
; *** BEGIN parameter packing
; lpszFile
; pointer char --> char
; same pointer types
mov eax,[bp+40] ; base address
push eax
call MapLS
mov [bp-4],eax
L0:
; *** END parameter packing
;-------------------------------------
; create new call frame and make the call
; lpszFile from: char
push dword ptr [bp-4] ; to: char
call PathQualify ; call 16-bit version
; return code unsigned long --> unsigned long
rol eax,16
xchg ax,dx
rol eax,16
push eax
push dword ptr [bp - 4]
call UnmapLS
pop eax
;-------------------------------------
;--- No error checking.
jmp Exit_4
;===========================================================================
T_ThkParseFile label near16
; bp+40 lpszFile
; bp+44 dwFlags
APILOGLS ThkParseFile
;-------------------------------------
; Temp storage
xor eax,eax
push eax ; ptr param #1 lpszFile
;-------------------------------------
; *** BEGIN parameter packing
; lpszFile
; pointer char --> char
; same pointer types
mov eax,[bp+40] ; base address
push eax
call MapLS
mov [bp-4],eax
L1:
; *** END parameter packing
;-------------------------------------
; create new call frame and make the call
; lpszFile from: char
push dword ptr [bp-4] ; to: char
; dwFlags from: unsigned long
push dword ptr [bp+44] ; to unsigned long
call ParseFileFrom32 ; call 16-bit version
; return code unsigned long --> unsigned long
rol eax,16
xchg ax,dx
rol eax,16
push eax
push dword ptr [bp - 4]
call UnmapLS
pop eax
;-------------------------------------
;--- No error checking.
jmp Exit_8
;===========================================================================
T_GetFileTitleI label near16
; bp+40 lpszFile
; bp+44 lpszTitle
; bp+48 wBufSize
; bp+52 dwFlags
APILOGLS GetFileTitleI
;-------------------------------------
; Temp storage
xor eax,eax
push eax ; ptr param #1 lpszFile
push eax ; ptr param #2 lpszTitle
;-------------------------------------
; *** BEGIN parameter packing
; lpszFile
; pointer char --> char
; same pointer types
mov eax,[bp+40] ; base address
push eax
call MapLS
mov [bp-4],eax
L2:
; lpszTitle
; pointer char --> char
; same pointer types
mov eax,[bp+44] ; base address
push eax
call MapLS
mov [bp-8],eax
L3:
; *** END parameter packing
;-------------------------------------
; create new call frame and make the call
; lpszFile from: char
push dword ptr [bp-4] ; to: char
; lpszTitle from: char
push dword ptr [bp-8] ; to: char
; wBufSize from: unsigned short
push word ptr [bp+48] ; to unsigned short
; dwFlags from: unsigned long
push dword ptr [bp+52] ; to unsigned long
call GetFileTitleI ; call 16-bit version
; return code short --> long
cwde
push eax
push dword ptr [bp - 4]
call UnmapLS
push dword ptr [bp - 8]
call UnmapLS
pop eax
;-------------------------------------
;--- No error checking.
jmp Exit_16
;===========================================================================
T_ThkCommDlgExtendedError label near16
APILOGLS ThkCommDlgExtendedError
;-------------------------------------
; create new call frame and make the call
call CommDlgExtendedError ; call 16-bit version
; return code unsigned long --> unsigned long
rol eax,16
xchg ax,dx
rol eax,16
;-------------------------------------
;--- No error checking.
jmp Exit_0
;===========================================================================
T_ThkChooseFont label near16
; bp+40 lpcf
APILOGLS ThkChooseFont
;-------------------------------------
; Temp storage
xor eax,eax
push eax ;Storage for lpszStyleTemp
LOCAL__THKCHOOSEFONT_lpszStyleTemp equ <[bp-4]>
push eax ;Storage for lpTemplateNameTemp
LOCAL__THKCHOOSEFONT_lpTemplateNameTemp equ <[bp-8]>
push eax ;Storage for Flags
LOCAL__THKCHOOSEFONT_Flags equ <[bp-12]>
push eax ; ptr param #1 lpcf
;-------------------------------------
; *** BEGIN parameter packing
; lpcf
; pointer struct --> struct
RAWPACK__THKCHOOSEFONT_lpcf 40, 16
L4:
; *** END parameter packing
;-------------------------------------
; create new call frame and make the call
; lpcf from: struct
push dword ptr [bp-16] ; to: struct
call ChooseFont ; call 16-bit version
; return code short --> long
cwde
;-------------------------------------
; *** BEGIN parameter unpacking
push eax ; save return code
; lpcf
RAWUNPACK__THKCHOOSEFONT_lpcf 40, 16
L5:
pop eax ; restore return code
; *** END parameter unpacking
;-------------------------------------
;--- No error checking.
jmp Exit_4
;===========================================================================
T_ThkChooseColor label near16
; bp+40 lpcc
APILOGLS ThkChooseColor
;-------------------------------------
; Temp storage
xor eax,eax
push eax ;Storage for lpTemplateNameSeg
LOCAL__THKCHOOSECOLOR_lpTemplateNameSeg equ <[bp-4]>
push eax ;Storage for lpCustColorsSeg
LOCAL__THKCHOOSECOLOR_lpCustColorsSeg equ <[bp-8]>
push eax ;Storage for Flags
LOCAL__THKCHOOSECOLOR_Flags equ <[bp-12]>
push eax ; ptr param #1 lpcc
;-------------------------------------
; *** BEGIN parameter packing
; lpcc
; pointer struct --> struct
RAWPACK__THKCHOOSECOLOR_lpcc 40, 16
L6:
; *** END parameter packing
;-------------------------------------
; create new call frame and make the call
; lpcc from: struct
push dword ptr [bp-16] ; to: struct
call ChooseColor ; call 16-bit version
; return code short --> long
cwde
;-------------------------------------
; *** BEGIN parameter unpacking
push eax ; save return code
; lpcc
RAWUNPACK__THKCHOOSECOLOR_lpcc 40, 16
L7:
pop eax ; restore return code
; *** END parameter unpacking
;-------------------------------------
;--- No error checking.
jmp Exit_4
;===========================================================================
T_ThkGetSaveFileName label near16
; bp+40 lpOfn
APILOGLS ThkGetSaveFileName
;-------------------------------------
; Temp storage
xor eax,eax
push eax ;Storage for Flags
LOCAL__THKGETSAVEFILENAME_Flags equ <[bp-4]>
push eax ; ptr param #1 lpOfn
;-------------------------------------
; *** BEGIN parameter packing
; lpOfn
; pointer struct --> struct
RAWPACK__THKGETSAVEFILENAME_lpOfn 40, 8
L8:
; *** END parameter packing
;-------------------------------------
; create new call frame and make the call
; lpOfn from: struct
push dword ptr [bp-8] ; to: struct
call GetSaveFileName ; call 16-bit version
; return code short --> long
cwde
;-------------------------------------
; *** BEGIN parameter unpacking
push eax ; save return code
; lpOfn
RAWUNPACK__THKGETSAVEFILENAME_lpOfn 40, 8
L9:
pop eax ; restore return code
; *** END parameter unpacking
;-------------------------------------
;--- No error checking.
jmp Exit_4
;===========================================================================
T_ThkGetOpenFileName label near16
; bp+40 lpOfn
APILOGLS ThkGetOpenFileName
;-------------------------------------
; Temp storage
xor eax,eax
push eax ;Storage for Flags
LOCAL__THKGETOPENFILENAME_Flags equ <[bp-4]>
push eax ; ptr param #1 lpOfn
;-------------------------------------
; *** BEGIN parameter packing
; lpOfn
; pointer struct --> struct
RAWPACK__THKGETOPENFILENAME_lpOfn 40, 8
L10:
; *** END parameter packing
;-------------------------------------
; create new call frame and make the call
; lpOfn from: struct
push dword ptr [bp-8] ; to: struct
call GetOpenFileName ; call 16-bit version
; return code short --> long
cwde
;-------------------------------------
; *** BEGIN parameter unpacking
push eax ; save return code
; lpOfn
RAWUNPACK__THKGETOPENFILENAME_lpOfn 40, 8
L11:
pop eax ; restore return code
; *** END parameter unpacking
;-------------------------------------
;--- No error checking.
jmp Exit_4
THK_CODE16_SIZE label byte
ENDIF
END