1 static void 2 arch_sigreturn(struct tcb *tcp) 3 { 4 /* Skip dummy stack frame. */ 5 const unsigned long addr = ppc_regs.gpr[1] + 64; 6 7 #ifdef POWERPC64 8 /* The only sigreturn on ppc64 is compat_sys_sigreturn. */ 9 typedef struct { 10 unsigned int _unused[4]; 11 int signal; 12 unsigned int handler; 13 unsigned int oldmask; 14 /* all the rest is irrelevant */ 15 } sigreturn_context; 16 #else 17 typedef struct sigcontext sigreturn_context; 18 #endif 19 20 sigreturn_context sc; 21 22 if (umove(tcp, addr, &sc) < 0) { 23 tprintf("{mask=%#lx}", addr); 24 } else { 25 const unsigned int mask[NSIG_BYTES / sizeof(int)] = { 26 sc.oldmask, 27 sc._unused[3] 28 }; 29 30 tprintsigmask_addr("{mask=", mask); 31 tprints("}"); 32 } 33 } 34
