/* TrapFrame的定义在include/x86/memory.h
* 请仔细理解这段程序的含义，这些内容将在后续的实验中被反复使用。 */
void
irq_handle(struct TrapFrame *tf) {
if (tf->irq == 1000) {
do_timer();
} else if (tf->irq == 1001) {
uint32_t code = in_byte(0x60);
uint32_t val = in_byte(0x61);
out_byte(0x61, val | 0x80);
out_byte(0x61, val);
do_keyboard(code);
}
}
void GEM_PumpEvents(_THIS)
{
short mousex, mousey, mouseb, dummy;
short kstate, prevkc, prevks;
int i;
SDL_keysym keysym;
memset(gem_currentkeyboard,0,sizeof(gem_currentkeyboard));
prevkc = prevks = 0;
for (;;)
{
int quit, resultat;
short buffer[8], kc;
quit = 0;
resultat = evnt_multi(
MU_MESAG|MU_TIMER|MU_KEYBD,
0,0,0,
0,0,0,0,0,
0,0,0,0,0,
buffer,
10,
&dummy,&dummy,&dummy,&kstate,&kc,&dummy
);
/* Message event ? */
if (resultat & MU_MESAG)
quit = do_messages(this, buffer);
/* Keyboard event ? */
if (resultat & MU_KEYBD) {
if ((prevkc != kc) || (prevks != kstate)) {
do_keyboard(kc,kstate);
} else {
/* Avoid looping, if repeating same key */
break;
}
}
/* Timer event ? */
if ((resultat & MU_TIMER) || quit)
break;
}
/* Update mouse */
graf_mkstate(&mousex, &mousey, &mouseb, &kstate);
do_mouse(this, mousex, mousey, mouseb, kstate);
/* Now generate keyboard events */
for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
/* Key pressed ? */
if (gem_currentkeyboard[i] && !gem_previouskeyboard[i])
SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(i, gem_currentascii[i], &keysym));
/* Key unpressed ? */
if (gem_previouskeyboard[i] && !gem_currentkeyboard[i])
SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(i, gem_currentascii[i], &keysym));
}
memcpy(gem_previouskeyboard,gem_currentkeyboard,sizeof(gem_previouskeyboard));
}
