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- #include <syscall.h>
- #include <signal.h>
- #include <errno.h>
-
- extern void ___sig_restore();
- extern void ___masksig_restore();
-
- int
- __sigaction(int sig,struct sigaction * new, struct sigaction * old)
- {
- if (new) {
- if (new->sa_flags & SA_NOMASK)
- new->sa_restorer=___sig_restore;
- else
- new->sa_restorer=___masksig_restore;
- }
-
- #if defined(__PIC__) || defined (__pic__)
- __asm__ volatile ("pushl %%ebx\n\t"
- "movl %%edi,%%ebx\n\t"
- "int $0x80\n\t"
- "popl %%ebx"
- :"=a" (sig)
- :"0" (SYS_sigaction),"D" (sig),"c" (new),"d" (old));
- #else
- __asm__("movel %1,d0\n\t"
- "movel %2,d1\n\t"
- "movel %3,d2\n\t"
- "movel %4,d3\n\t"
- "trap #0\n\t"
- "movel d0,%0"
- : "=g" (sig)
- :"i" (SYS_sigaction), "g" (sig), "g" (new), "g" (old)
- : "d0", "d1", "d2", "d3");
- #endif
- if (sig>=0)
- return 0;
- errno = -sig;
- return -1;
- }
-