28 lines
847 B
C
Executable file
28 lines
847 B
C
Executable file
#include <lib.h>
|
|
#define sigfillset _sigfillset
|
|
#define sigprocmask _sigprocmask
|
|
#define sigreturn _sigreturn
|
|
#include <sys/sigcontext.h>
|
|
#include <signal.h>
|
|
|
|
PUBLIC int sigreturn(scp)
|
|
register struct sigcontext *scp;
|
|
{
|
|
sigset_t set;
|
|
|
|
/* The message can't be on the stack, because the stack will vanish out
|
|
* from under us. The send part of sendrec will succeed, but when
|
|
* a message is sent to restart the current process, who knows what will
|
|
* be in the place formerly occupied by the message?
|
|
*/
|
|
static message m;
|
|
|
|
/* Protect against race conditions by blocking all interrupts. */
|
|
sigfillset(&set); /* splhi */
|
|
sigprocmask(SIG_SETMASK, &set, (sigset_t *) NULL);
|
|
|
|
m.m2_l1 = scp->sc_mask;
|
|
m.m2_i2 = scp->sc_flags;
|
|
m.m2_p1 = (char *) scp;
|
|
return(_syscall(MM, SIGRETURN, &m)); /* normally this doesn't return */
|
|
}
|