wine/if1632/call.S
Alexandre Julliard e399fc3636 Release 0.4.10
Mon Nov 22 13:58:56 1993  David Metcalfe <david@prism.demon.co.uk>

        * [windows/scroll.c]
	Preliminary implementations of ScrollWindow, ScrollDC and
        ScrollWindowEx.

Nov 21, 93 martin2@trgcorp.solucorp.qc.ca (Martin Ayotte)

	* [controls/listbox.c]
	Optimization of redraw during 'Add' or 'Insert'.

	* [controls/scroll.c]
	Optimization of WM_PAINT during 'thumbtracking'.

	* [controls/button.c]
	Add of beta implement of 'BS_OWNERDRAW'

	* [controls/static.c]
	Style 'SS_ICON' new supported.

	* [misc/message.c]
	Begin of implemantation of MB_XXX styles.

	* [loader/resource.c]
	Function LoadIcon() : now prepare transparency Bitmap mask.
	Function LoadCursor() : now prepare a 'X pixmapcursor'.
	New function SetCursor() : not finished.
	New function ShowCursor() : not finished.
	New function AccessResource() : stub.

	* [obj/dib.c]
	Function DrawIcon(): deugging phase of icon transparency mask.

	* [loader/library.c]
	new file for news functions LoadLibrary() & FreeLibrary().

	* [sysres.dll]
	Resources only 16bits DLL for System Resources, icons, etc...

Sun Nov 14 14:39:06 1993  julliard@di.epfl.ch (Alexandre Julliard)

	* [include/dialog.h] [windows/dialog.c]
	Simplified dialog template parsing.
	Implemented DialogBoxIndirect().

	* [windows/win.c]
	Fixed bug in CreateWindow() when aborting window creation.
	Modified UpdateWindow() to only update visible windows.
	Implemented IsWindow().

Nov 14, 93 martin2@trgcorp.solucorp.qc.ca (Martin Ayotte)

	* [controls/listbox.c]
	Listbox control window : new messages.

	* [controls/combo.c]
	Combo box control window : new messages.

	* [misc/message.c]
	Moved stub MessageBox() to this new file.
	Implemented of a callback, now MessageBox show a window.

	* [loader/resource.c]
	New function DestroyIcon()
	New function DestroyCursor()
	Filled stub LoadIcon()
	Filled stub LoadCursor()
	Bug fixed in FindResourceByName() : missing lseek().

	* [obj/dib.c]
	New function DrawIcon()

	* [windows/win.c]
	New function CloseWindow()
	New function OpenIcon()
	New function IsIconic()
	New Function FindWindow()

Sun Nov 14 08:27:19 1993  Karl Guenter Wuensch (hz225wu@unidui.uni-duisburg.de)

	* [loader/selector.c]
	Wrote AllocCStoDSAlias() and AllocDStoCSAlias()

Sun Nov 14 08:27:19 1993  Bob Amstadt  (bob at amscons)

	* [loader/selector.c]
	Wrote AllocSelector() and PrestoChangoSelector().  YUK!

Sat Nov 13 13:56:42 1993  Bob Amstadt  (bob at amscons)

	* [loader/resource.c]
	Wrote FindResource(), LoadResource(), LockResource(),
	and FreeResource()

	* [include/segmem.h] [loader/selector.c] [loader/signal.h]
	Changed selector allocation method.

Sun Nov 10 08:27:19 1993  Karl Guenter Wuensch (hz225wu@unidui.uni-duisburg.de)

	* [if1632/callback.c if1632/call.S if1632/user.spec] 
	added Catch (KERNEL.55) and Throw (KERNEL.56)
	
Nov 7, 93 martin2@trgcorp.solucorp.qc.ca (Martin Ayotte)

	* [controls/scroll.c]
	Scroll bar control window
		Bug resolved : Painting message before scroll visible.

	* [controls/listbox.c]
	Listbox control window
		Destroy cleanup.

	* [controls/combo.c]
	Combo box control window
		Destroy cleanup.

	* [controls/button.c]
		GetCheck Message now return is state.

	* [windows/win.c]
	New function IsWindowVisible()
1993-11-24 17:08:56 +00:00

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/*
* Copyright Robert J. Amstadt, 1993
*/
#ifdef linux
#define UDATASEL 0x2b
#endif
#ifdef __NetBSD__
#define UDATASEL 0x27
#endif
.data
jump_target:
return_value:
.long 0
/**********************************************************************
* Places to keep info about the current 32-bit stack frame.
*/
.globl _IF1632_Saved32_esp,_IF1632_Saved32_ebp,_IF1632_Saved32_ss
_IF1632_Saved32_esp:
.long 0
_IF1632_Saved32_ebp:
.long 0
_IF1632_Saved32_ss:
.word 0
/**********************************************************************
* Places to keep info about the current 16-bit stack frame.
*/
.globl _IF1632_Saved16_esp,_IF1632_Saved16_ebp,_IF1632_Saved16_ss
_IF1632_Saved16_esp:
.long 0
_IF1632_Saved16_ebp:
.long 0
_IF1632_Saved16_ss:
.word 0
nbytes:
.word 0
selector:
.word 0
offset:
.word 0
.text
/**********************************************************************
* int CallToInit16(unsigned long csip, unsigned long sssp,
* unsigned short ds)
*
* Stack: 0 ebp
* 4 eip
* 8 target ip
* 10 target cs
* 12 target sp
* 14 target ss
* 16 target ds
*/
.align 4
.globl _CallToInit16
_CallToInit16:
pushl %ebp
movl %esp,%ebp
/*
* Save our registers
*/
pushal
pushl _IF1632_Saved32_esp
pushl _IF1632_Saved32_ebp
pushw _IF1632_Saved32_ss
/*
* Get target address.
*/
movl 8(%ebp),%eax
movl %eax,jump_target
lea jump_target,%edx
/*
* Put stack registers where we can get them after stack switch.
*/
movw %ss,_IF1632_Saved32_ss
movl %esp,_IF1632_Saved32_esp
movl %ebp,_IF1632_Saved32_ebp
/*
* Load initial registers
*/
movw _WIN_StackSize,%bx
movw _WIN_HeapSize,%cx
movl $0,%esi
xorl %eax,%eax
movw _PSPSelector,%ax
movw %ax,%es
movw 16(%ebp),%ax
movw %ax,%ds
movl %eax,%edi
xorl %eax,%eax
movw 12(%ebp),%ax
movl %eax,%esp
movw 14(%ebp),%ax
movw %ax,%ss
movl %esp,%eax
movl %eax,%ebp
#if 1
movw $UDATASEL,%ax
movw %ax,%fs
movw %ax,%gs
#endif
/*
* Call entry point
*/
.byte 0x66
lcall %fs:(%edx)
/*
* Restore old stack and segment registers.
*
* Two choices here:
* 1. Trust that fs or gs hasn't changed.
* 2. Rely on knowledge of Linux use of segments.
*
* I'll opt for choice 2 because who knows what programs we
* going to run. Linux should be fairly stable in terms of
* GDT usage.
*/
pushl %eax
movw $UDATASEL,%ax
movw %ax,%ds
movw %ax,%es
movw %ax,%fs
movw %ax,%gs
popl %eax
movw _IF1632_Saved32_ss,%ss
movl _IF1632_Saved32_esp,%esp
movl _IF1632_Saved32_ebp,%ebp
/*
* Restore registers, but do not destroy return value.
*/
popw _IF1632_Saved32_ss
popl _IF1632_Saved32_ebp
popl _IF1632_Saved32_esp
movl %eax,return_value
popal
movl return_value,%eax
.align 2,0x90
leave
ret
/**********************************************************************
* int CallTo16(unsigned long csip, unsigned short ds)
*
* Stack: 0 ebp
* 4 eip
* 8 target ip
* 10 target cs
* 12 target ds
*/
.align 4
.globl _CallTo16
_CallTo16:
pushl %ebp
movl %esp,%ebp
/*
* Get target address and new ds
*/
movl 8(%ebp),%eax
movl %eax,jump_target
lea jump_target,%edx
movw 12(%ebp),%ax
/*
* Switch to 16-bit stack
*/
pushl _IF1632_Saved32_esp
pushl _IF1632_Saved32_ebp
pushw _IF1632_Saved32_ss
movw %ss,_IF1632_Saved32_ss
movl %esp,_IF1632_Saved32_esp
movl %ebp,_IF1632_Saved32_ebp
movw _IF1632_Saved16_ss,%ss
movl _IF1632_Saved16_esp,%esp
movl _IF1632_Saved16_ebp,%ebp
/*
* Call entry point
*/
movw %ax,%ds
.byte 0x66
lcall %fs:(%edx)
/*
* Restore old stack and segment registers.
*
* Two choices here:
* 1. Trust that fs or gs hasn't changed.
* 2. Rely on knowledge of Linux use of segments.
*
* I'll opt for choice 2 because who knows what programs we
* going to run. Linux should be fairly stable in terms of
* GDT usage.
*/
pushl %eax
movw $UDATASEL,%ax
movw %ax,%ds
movw %ax,%es
movw %ax,%fs
movw %ax,%gs
popl %eax
movw %ss,_IF1632_Saved16_ss
movl %esp,_IF1632_Saved16_esp
movl %ebp,_IF1632_Saved16_ebp
movw _IF1632_Saved32_ss,%ss
movl _IF1632_Saved32_esp,%esp
movl _IF1632_Saved32_ebp,%ebp
popw _IF1632_Saved32_ss
popl _IF1632_Saved32_ebp
popl _IF1632_Saved32_esp
movl %eax,return_value
movw return_value+2,%dx
.align 2,0x90
leave
ret
/**********************************************************************
* CallTo32()
*
* This function is called as a relay point to the built function
* handler. KERNEL, USER and GDI calls are dealt with by this
* handler. Calls to these DLLs will be mapped to a call handler
* which will set EAX to a number indicating which DLL and which
* function within that DLL.
*
* This function will pass to the function handler two arguments.
* The first argument will be the contents of EAX, the second
* argument will be a segment:offset pair that points to the
* 16-bit stack.
*/
.align 4
.globl _CallTo32
_CallTo32:
pushl %ebp
movl %esp,%ebp
/*
* Save registers. 286 mode does not have fs or gs.
*/
pushw %ds
pushw %es
/*
* Restore segment registers.
*/
pushl %eax
movw $UDATASEL,%ax
movw %ax,%ds
movw %ax,%es
popl %eax
/*
* Save old stack save variables, save stack registers, reload
* stack registers.
*/
pushl _IF1632_Saved16_esp
pushl _IF1632_Saved16_ebp
pushw _IF1632_Saved16_ss
movw %ss,_IF1632_Saved16_ss
movl %esp,_IF1632_Saved16_esp
movl %ebp,_IF1632_Saved16_ebp
movw _IF1632_Saved32_ss,%ss
movl _IF1632_Saved32_esp,%esp
movl _IF1632_Saved32_ebp,%ebp
/*
* Call entry point
*/
pushw _IF1632_Saved16_ss
pushw _IF1632_Saved16_esp
pushl %eax
call _DLLRelay
/*
* Restore registers, but do not destroy return value.
*/
movw _IF1632_Saved16_ss,%ss
movl _IF1632_Saved16_esp,%esp
movl _IF1632_Saved16_ebp,%ebp
popw _IF1632_Saved16_ss
popl _IF1632_Saved16_ebp
popl _IF1632_Saved16_esp
popw %es
popw %ds
.align 2,0x90
leave
/*
* Now we need to ditch the parameter bytes that were left on the
* stack. We do this by effectively popping the number of bytes,
* and the return address, removing the parameters and then putting
* the return address back on the stack.
* Normally this field is filled in by the relevant function in
* the emulation library, since it should know how many bytes to
* expect.
*/
popw %gs:nbytes
cmpw $0,%gs:nbytes
je noargs
popw %gs:offset
popw %gs:selector
addw %gs:nbytes,%esp
pushw %gs:selector
pushw %gs:offset
noargs:
/*
* Last, but not least we need to move the high word from eax to dx
*/
pushl %eax
popw %dx
popw %dx
.byte 0x66
lret
/**********************************************************************
* ReturnFromRegisterFunc()
*/
.globl _ReturnFromRegisterFunc
_ReturnFromRegisterFunc:
/*
* Restore 16-bit stack
*/
movw _IF1632_Saved16_ss,%ss
movl _IF1632_Saved16_esp,%esp
movl _IF1632_Saved16_ebp,%ebp
popw _IF1632_Saved16_ss
popl _IF1632_Saved16_ebp
popl _IF1632_Saved16_esp
popw %es
popw %ds
.align 2,0x90
leave
/*
* This leaves us with a stack that has number of arguments,
* the return address, the saved registers, and the return
* address again.
*/
add $6,%esp /* argument count, return address */
popw %gs
add $2,%esp
popw %fs
add $2,%esp
popw %es
add $2,%esp
popw %ds
add $2,%esp
popal
add $16,%esp /* trapno, err, eip, cs */
popfl
add $20,%esp /* esp, ss, i387, oldmask, cr2 */
/*
* Return to original caller.
*/
.byte 0x66
lret