153 lines
3.5 KiB
C
153 lines
3.5 KiB
C
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
|
|
#include <syscall.h>
|
|
#include <signal.h>
|
|
#include <errno.h>
|
|
#ifdef linux
|
|
#include <linux/sched.h>
|
|
#include <asm/system.h>
|
|
#endif
|
|
#include <wine.h>
|
|
|
|
char * cstack[4096];
|
|
struct sigaction segv_act;
|
|
|
|
#ifdef linux
|
|
extern void ___sig_restore();
|
|
extern void ___masksig_restore();
|
|
#endif
|
|
|
|
/* Similar to the sigaction function in libc, except it leaves alone the
|
|
restorer field */
|
|
|
|
static int
|
|
wine_sigaction(int sig,struct sigaction * new, struct sigaction * old)
|
|
{
|
|
__asm__("int $0x80":"=a" (sig)
|
|
:"0" (SYS_sigaction),"b" (sig),"c" (new),"d" (old));
|
|
if (sig>=0)
|
|
return 0;
|
|
errno = -sig;
|
|
return -1;
|
|
}
|
|
|
|
#ifdef linux
|
|
static void win_fault(int signal, struct sigcontext_struct context){
|
|
struct sigcontext_struct *scp = &context;
|
|
#else
|
|
static void win_fault(int signal, int code, struct sigcontext *scp){
|
|
#endif
|
|
unsigned char * instr;
|
|
unsigned char intno;
|
|
unsigned int * dump;
|
|
int i;
|
|
|
|
/* First take care of a few preliminaries */
|
|
#ifdef linux
|
|
if(signal != SIGSEGV) exit(1);
|
|
if((scp->sc_cs & 7) != 7){
|
|
#endif
|
|
#ifdef __NetBSD__
|
|
/* set_es(0x27); set_ds(0x27); */
|
|
if(signal != SIGBUS) exit(1);
|
|
if(scp->sc_cs == 0x1f){
|
|
#endif
|
|
fprintf(stderr,
|
|
"Segmentation fault in Wine program (%x:%x)."
|
|
" Please debug\n",
|
|
scp->sc_cs, scp->sc_eip);
|
|
goto oops;
|
|
};
|
|
|
|
/* Now take a look at the actual instruction where the program
|
|
bombed */
|
|
instr = (char *) ((scp->sc_cs << 16) | (scp->sc_eip & 0xffff));
|
|
|
|
if(*instr != 0xcd) {
|
|
fprintf(stderr,
|
|
"Unexpected Windows program segfault"
|
|
" - opcode = %x\n", *instr);
|
|
#if 0
|
|
return;
|
|
#else
|
|
goto oops;
|
|
#endif
|
|
};
|
|
|
|
instr++;
|
|
intno = *instr;
|
|
switch(intno){
|
|
case 0x21:
|
|
if(!do_int21(scp)) goto oops;
|
|
break;
|
|
case 0x11:
|
|
scp->sc_eax = 0x00000000; /* get equipment list: we haven't */
|
|
break; /* got anything */
|
|
case 0x12:
|
|
scp->sc_eax = 640L; /* get base mem size */
|
|
break;
|
|
case 0x1A:
|
|
if(!do_int1A(scp)) goto oops;
|
|
break;
|
|
default:
|
|
fprintf(stderr,"Unexpected Windows interrupt %x\n", intno);
|
|
goto oops;
|
|
};
|
|
|
|
/* OK, done handling the interrupt */
|
|
|
|
scp->sc_eip += 2; /* Bypass the int instruction */
|
|
return;
|
|
oops:
|
|
fprintf(stderr,"In win_fault %x:%x\n", scp->sc_cs, scp->sc_eip);
|
|
#ifdef linux
|
|
wine_debug(scp); /* Enter our debugger */
|
|
#else
|
|
fprintf(stderr,"Stack: %x:%x\n", scp->sc_ss, scp->sc_esp);
|
|
dump = (int*) scp;
|
|
for(i=0; i<22; i++)
|
|
{
|
|
fprintf(stderr," %8.8x", *dump++);
|
|
if ((i % 8) == 7)
|
|
fprintf(stderr,"\n");
|
|
}
|
|
fprintf(stderr,"\n");
|
|
exit(1);
|
|
#endif
|
|
}
|
|
|
|
int
|
|
init_wine_signals(){
|
|
#ifdef linux
|
|
segv_act.sa_handler = (__sighandler_t) win_fault;
|
|
/* Point to the top of the stack, minus 4 just in case, and make
|
|
it aligned */
|
|
segv_act.sa_restorer =
|
|
(void (*)()) (((unsigned int)(cstack) + sizeof(cstack) - 4) & ~3);
|
|
wine_sigaction(SIGSEGV, &segv_act, NULL);
|
|
#endif
|
|
#ifdef __NetBSD__
|
|
struct sigstack ss;
|
|
sigset_t sig_mask;
|
|
|
|
ss.ss_sp = (char *) (((unsigned int)(cstack) + sizeof(cstack) - 4) & ~3);
|
|
ss.ss_onstack = 0;
|
|
if (sigstack(&ss, NULL) < 0) {
|
|
perror("sigstack");
|
|
exit(1);
|
|
}
|
|
sigemptyset(&sig_mask);
|
|
segv_act.sa_handler = (__sighandler_t) win_fault;
|
|
segv_act.sa_flags = SA_ONSTACK;
|
|
segv_act.sa_mask = sig_mask;
|
|
if (sigaction(SIGBUS, &segv_act, NULL) < 0) {
|
|
perror("sigaction");
|
|
exit(1);
|
|
}
|
|
#endif
|
|
}
|
|
|