diff options
| author | Jaroslav Hensl <emulator@emulace.cz> | 2023-04-10 14:53:37 +0200 |
|---|---|---|
| committer | Jaroslav Hensl <emulator@emulace.cz> | 2023-04-10 14:53:37 +0200 |
| commit | 503e91046f60a86823629d43e64e2d0fcc006549 (patch) | |
| tree | 7f4815da1ae1a94ede4d35aeb32b7ec2b32427e2 /control_vxd.c | |
| download | vmdisp9x-503e91046f60a86823629d43e64e2d0fcc006549.tar.gz | |
public release
Diffstat (limited to 'control_vxd.c')
| -rw-r--r-- | control_vxd.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/control_vxd.c b/control_vxd.c new file mode 100644 index 0000000..23630af --- /dev/null +++ b/control_vxd.c @@ -0,0 +1,212 @@ +/*****************************************************************************
+
+Copyright (c) 2023 Jaroslav Hensl <emulator@emulace.cz>
+
+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.
+
+*****************************************************************************/
+/* Communication from ring3 PM16 -> ring0 PM32 */
+
+#include <wchar.h> /* wchar_t */
+#include <string.h> /* _fmemset */
+#include <stdint.h>
+#include "winhack.h" /* BOOL */
+
+#include "vmwsvxd.h"
+#include "control_vxd.h"
+
+#ifdef DBGPRINT
+extern void dbg_printf( const char *s, ... );
+#else
+#define dbg_printf(...)
+#endif
+
+static uint32_t VXD_srv = 0;
+
+#pragma code_seg( _INIT )
+
+BOOL VXD_load()
+{
+ if(VXD_srv != 0)
+ {
+ return TRUE;
+ }
+
+ _asm{
+ push es
+ push ax
+ push dx
+ push bx
+ push di
+
+ xor di,di
+ mov es,di
+ mov ax, 1684H
+ mov bx, VMWSVXD_DEVICE_ID
+ int 2FH
+ mov word ptr [VXD_srv],di
+ mov word ptr [VXD_srv+2],es
+
+ pop di
+ pop bx
+ pop dx
+ pop ax
+ pop es
+ };
+
+ return VXD_srv != 0;
+}
+
+BOOL VXD_CreateRegion(uint32_t nPages, uint32_t __far *lpLAddr, uint32_t __far *lpPPN)
+{
+ static uint32_t snPages;
+ static uint32_t sLAddr;
+ static uint32_t sPPN;
+ static uint16_t state = 0;
+
+ snPages = nPages;
+
+ if(VXD_srv != 0)
+ {
+ _asm
+ {
+ .386
+ push eax
+ push edx
+ push ecx
+
+ mov edx, VMWSVXD_PM16_CREATE_REGION
+ mov ecx, [snPages]
+ call dword ptr [VXD_srv]
+ mov [state], ax
+ mov [sLAddr], edx
+ mov [sPPN], ecx
+
+ pop ecx
+ pop edx
+ pop eax
+ };
+
+ if(state == 1)
+ {
+ *lpLAddr = sLAddr;
+ *lpPPN = sPPN;
+
+ return TRUE;
+ }
+ else
+ {
+ dbg_printf("state: %X, LAddr: %lX, PPN: %lX\n", state, sLAddr, sPPN);
+ }
+ }
+
+ return FALSE;
+}
+
+BOOL VXD_FreeRegion(uint32_t LAddr)
+{
+ static uint32_t sLAddr;
+ static uint16_t state;
+
+ sLAddr = LAddr;
+
+ if(VXD_srv != 0)
+ {
+ _asm
+ {
+ .386
+ push eax
+ push edx
+ push ecx
+
+ mov edx, VMWSVXD_PM16_DESTROY_REGION
+ mov ecx, [LAddr]
+ call dword ptr [VXD_srv]
+ mov [state], ax
+
+ pop ecx
+ pop edx
+ pop eax
+ };
+
+ if(state == 1)
+ {
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+void VXD_zeromem(uint32_t LAddr, uint32_t size)
+{
+ static uint32_t sLAddr;
+ static uint32_t ssize;
+
+ sLAddr = LAddr;
+ ssize = size;
+
+ if(VXD_srv != 0)
+ {
+ _asm
+ {
+ .386
+ push eax
+ push edx
+ push ecx
+ push esi
+
+ mov edx, VMWSVXD_PM16_ZEROMEM
+ mov esi, [sLAddr]
+ mov ecx, [ssize]
+ call dword ptr [VXD_srv]
+
+ pop esi
+ pop ecx
+ pop edx
+ pop eax
+ }
+ }
+}
+
+uint32_t VXD_apiver()
+{
+ static uint32_t sver = 0;
+
+ if(VXD_srv != 0)
+ {
+ _asm
+ {
+ .386
+ push eax
+ push edx
+ push ecx
+
+ mov edx, VMWSVXD_PM16_APIVER
+ call dword ptr [VXD_srv]
+ mov [sver], ecx
+
+ pop ecx
+ pop edx
+ pop eax
+ }
+ }
+
+ return sver;
+}
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