sigcontext       2270 gc/os_dep.c        typedef void (* REAL_SIG_PF)(int, int, struct sigcontext *);
sigcontext       2288 gc/os_dep.c          typedef struct sigcontext s_c;
sigcontext       2292 gc/os_dep.c            typedef struct sigcontext s_c;
sigcontext       2382 gc/os_dep.c        struct sigcontext *scp;
sigcontext       2398 gc/os_dep.c        void GC_write_fault_handler(int sig, int code, struct sigcontext *scp)
sigcontext       2489 gc/os_dep.c    	  struct sigcontext *scp = (struct sigcontext *)(sc);