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fixed a bug in moo_unchatch_termreq for dos

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This commit is contained in:
hyunghwan.chung 2018-12-04 08:40:59 +00:00
parent cd5284e65f
commit 9b48cff37d
1 changed files with 58 additions and 6 deletions
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64
moo/lib/std.c
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@ -90,6 +90,7 @@
# include <signal.h>
# include <errno.h>
# include <fcntl.h>
# include <conio.h> /* inp, outp */
# if defined(_INTELC32_)
# define DOS_EXIT 0x4C
@ -3735,6 +3736,10 @@ void moo_uncatch_termreq (void)
#elif defined(__DOS__)
/*#define IRQ_TERM 0x23*/
/*#define IRQ_TERM 0x1B*/
#define IRQ_TERM 0x9
#if defined(_INTELC32_)
static void (*dos_prev_int23_handler) (void);
#pragma interrupt(dos_int23_handler)
@ -3744,29 +3749,76 @@ static void (__interrupt *dos_prev_int23_handler) (void);
static void __interrupt dos_int23_handler (void)
#endif
{
#if defined(_INTELC32_)
#if (IRQ_TERM == 0x23) && defined(_INTELC32_)
/* note this code for _INTELC32_ doesn't seem to work properly
* unless the program is waiting on getch() or something similar */
/* prevent the DOS interrupt handler from being called */
_XSTACK* stk = (_XSTACK*)_get_stk_frame();
stk->opts |= _STK_NOINT;
#endif
abort_all_moos (0);
/* if i call the previous handler, it's likely to kill the application.
* so i don't chain-call the previous handler. but another call could
* have changed the handler already to something else. then it would be
* better to chain-call it. TODO: find a way to chain-call it safely */
/*_chain_intr (dos_prev_int23_handler);*/
#else
#if 0
static int extended = 0;
static int keyboard[255] = { 0, };
moo_uint8_t sc, status;
/* TODO: determine if the key pressed is ctrl-C or ctrl-break ... */
sc = inp(0x60);
/*status = inp(0x61);*/
if (sc == 0xE0)
{
/* extended key prefix */
extended = 1;
}
else if (sc == 0xE1)
{
/* pause key */
}
else
{
if (sc & 0x80)
{
/* key release */
sc = sc & 0x7F;
keyboard[sc] = 0;
printf ("%key released ... %x\n", sc);
}
else
{
keyboard[sc] = 1;
printf ("%key pressed ... %x %c\n", sc, sc);
abort_all_moos (0);
}
extended = 0;
}
/*_chain_intr (dos_prev_int23_handler);*/
outp (0x20, 0x20);
#else
abort_all_moos (0);
_chain_intr (dos_prev_int23_handler);
#endif
#endif
}
void moo_catch_termreq (void)
{
dos_prev_int23_handler = _dos_getvect(0x23);
_dos_setvect (0x23, dos_int23_handler);
dos_prev_int23_handler = _dos_getvect(IRQ_TERM);
_dos_setvect (IRQ_TERM, dos_int23_handler);
}
void moo_uncatch_termreq (void)
{
_dos_setvect (0x23, dos_int23_handler);
_dos_setvect (IRQ_TERM, dos_prev_int23_handler);
dos_prev_int23_handler = MOO_NULL;
}
#else