Implemented a int 0x33 handler, with a minimal implementation of the
mouse routines, including callbacks.
diff --git a/msdos/int33.c b/msdos/int33.c
new file mode 100644
index 0000000..3401928
--- /dev/null
+++ b/msdos/int33.c
@@ -0,0 +1,122 @@
+/*
+ * DOS interrupt 33h handler
+ */
+
+#include <stdlib.h>
+#include "winuser.h"
+#include "miscemu.h"
+#include "dosexe.h"
+#include "debug.h"
+
+typedef struct {
+ DWORD x, y, but;
+ FARPROC16 callback;
+ WORD callmask;
+} MOUSESYSTEM;
+
+/**********************************************************************
+ * INT_Int33Handler
+ *
+ * Handler for int 33h (MS MOUSE).
+ */
+void WINAPI INT_Int33Handler( CONTEXT *context )
+{
+ MOUSESYSTEM *sys = (MOUSESYSTEM *)DOSVM_GetSystemData(0x33);
+
+ switch (AX_reg(context)) {
+ case 0x00:
+ TRACE(int,"Reset mouse driver and request status\n");
+ AX_reg(context) = 0xFFFF; /* installed */
+ BX_reg(context) = 3; /* # of buttons */
+ sys = calloc(1,sizeof(MOUSESYSTEM));
+ DOSVM_SetSystemData(0x33, sys);
+ break;
+ case 0x03:
+ TRACE(int,"Return mouse position and button status\n");
+ BX_reg(context) = sys->but;
+ CX_reg(context) = sys->x;
+ DX_reg(context) = sys->y;
+ break;
+ case 0x0C: /* Define interrupt subroutine */
+ TRACE(int,"Define mouse interrupt subroutine\n");
+ sys->callmask = CX_reg(context);
+ sys->callback = (FARPROC16)PTR_SEG_OFF_TO_SEGPTR(ES_reg(context), DX_reg(context));
+ break;
+ default:
+ INT_BARF(context,0x33);
+ }
+}
+
+typedef struct {
+ FARPROC16 proc;
+ WORD mask,but,x,y,mx,my;
+} MCALLDATA;
+
+static void MouseRelay(LPDOSTASK lpDosTask,PCONTEXT context,void *mdata)
+{
+ MCALLDATA *data = (MCALLDATA *)mdata;
+ CONTEXT ctx = *context;
+
+ AX_reg(&ctx) = data->mask;
+ BX_reg(&ctx) = data->but;
+ CX_reg(&ctx) = data->x;
+ DX_reg(&ctx) = data->y;
+ SI_reg(&ctx) = data->mx;
+ DI_reg(&ctx) = data->my;
+ CS_reg(&ctx) = SELECTOROF(data->proc);
+ IP_reg(&ctx) = OFFSETOF(data->proc);
+ free(data);
+ DPMI_CallRMProc(&ctx, NULL, 0, 0);
+}
+
+void WINAPI INT_Int33Message(UINT message,WPARAM wParam,LPARAM lParam)
+{
+ MOUSESYSTEM *sys = (MOUSESYSTEM *)DOSVM_GetSystemData(0x33);
+ WORD mask = 0;
+
+ if (!sys) return;
+ sys->x = LOWORD(lParam);
+ sys->y = HIWORD(lParam);
+ switch (message) {
+ case WM_MOUSEMOVE:
+ mask |= 0x01;
+ break;
+ case WM_LBUTTONDOWN:
+ case WM_LBUTTONDBLCLK:
+ sys->but |= 0x01;
+ mask |= 0x02;
+ break;
+ case WM_LBUTTONUP:
+ sys->but &= ~0x01;
+ mask |= 0x04;
+ break;
+ case WM_RBUTTONDOWN:
+ case WM_RBUTTONDBLCLK:
+ sys->but |= 0x02;
+ mask |= 0x08;
+ break;
+ case WM_RBUTTONUP:
+ sys->but &= ~0x02;
+ mask |= 0x10;
+ break;
+ case WM_MBUTTONDOWN:
+ case WM_MBUTTONDBLCLK:
+ sys->but |= 0x04;
+ mask |= 0x20;
+ break;
+ case WM_MBUTTONUP:
+ sys->but &= ~0x04;
+ mask |= 0x40;
+ break;
+ }
+
+ if ((mask & sys->callmask) && sys->callback) {
+ MCALLDATA *data = calloc(1,sizeof(MCALLDATA));
+ data->proc = sys->callback;
+ data->mask = mask & sys->callmask;
+ data->but = sys->but;
+ data->x = sys->x;
+ data->y = sys->y;
+ DOSVM_QueueEvent(-1, DOS_PRIORITY_MOUSE, MouseRelay, data);
+ }
+}
