1struct sigscratch { 2 unsigned long scratch_unat; /* ar.unat for the general registers saved in pt */ 3 unsigned long ar_pfs; /* for syscalls, the user-level function-state */ 4 struct pt_regs pt; 5}; 6 7struct sigframe { 8 /* 9 * Place signal handler args where user-level unwinder can find them easily. 10 * DO NOT MOVE THESE. They are part of the IA-64 Linux ABI and there is 11 * user-level code that depends on their presence! 12 */ 13 unsigned long arg0; /* signum */ 14 unsigned long arg1; /* siginfo pointer */ 15 unsigned long arg2; /* sigcontext pointer */ 16 /* 17 * End of architected state. 18 */ 19 20 void __user *handler; /* pointer to the plabel of the signal handler */ 21 struct siginfo info; 22 struct sigcontext sc; 23}; 24 25extern void ia64_do_signal (struct sigscratch *, long); 26