diff options
Diffstat (limited to 'lib/csu')
| -rw-r--r-- | lib/csu/alpha/crt1.c | 88 |
1 files changed, 68 insertions, 20 deletions
diff --git a/lib/csu/alpha/crt1.c b/lib/csu/alpha/crt1.c index 3ef5d71..bbb55bb 100644 --- a/lib/csu/alpha/crt1.c +++ b/lib/csu/alpha/crt1.c @@ -1,6 +1,8 @@ /*- * Copyright 1996-1998 John D. Polstra. * All rights reserved. + * Copyright (c) 1995 Christopher G. Demetriou + * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -10,6 +12,12 @@ * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Christopher G. Demetriou + * for the NetBSD Project. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES @@ -31,33 +39,73 @@ #include <stdlib.h> -typedef void (*fptr)(void); +#ifdef HAVE_RTLD +#include <sys/exec.h> +#include <sys/syscall.h> +#include <rtld.h> -extern void _fini(void); -extern void _init(void); -extern int main(int, char **, char **); +const Obj_Entry *__mainprog_obj; + +extern int __syscall (int, ...); +#define _exit(v) __syscall(SYS_exit, (v)) +#define write(fd, s, n) __syscall(SYS_write, (fd), (s), (n)) + +#define _FATAL(str) \ + do { \ + write(2, str, sizeof(str)); \ + _exit(1); \ + } while (0) -extern int _DYNAMIC; #pragma weak _DYNAMIC +extern int _DYNAMIC; +#else +/* + * When doing a bootstrap build, the header files for runtime + * loader support are not available, so this source file is + * compiled to a static object. + */ +#define Obj_Entry void +struct ps_strings; +#endif + +extern void _init(void); +extern void _fini(void); +extern int main(int, char **, char **); char **environ; char *__progname = ""; +/* The entry function. */ void -_start(char *arguments, ...) +_start(char **ap, + void (*cleanup)(void), /* from shared loader */ + const Obj_Entry *obj, /* from shared loader */ + struct ps_strings *ps_strings) { - int argc; - char **argv; - char **env; - - argv = &arguments; - argc = * (int *) (argv - 1); - env = argv + argc + 1; - environ = env; - if(argc > 0) - __progname = argv[0]; - - atexit(_fini); - _init(); - exit( main(argc, argv, env) ); + int argc; + char **argv; + char **env; + + argc = * (long *) ap; + argv = ap + 1; + env = ap + 2 + argc; + environ = env; + if(argc > 0) + __progname = argv[0]; + +#ifdef HAVE_RTLD + if (&_DYNAMIC != NULL) { + if ((obj == NULL) || (obj->magic != RTLD_MAGIC)) + _FATAL("Corrupt Obj_Entry pointer in GOT"); + if (obj->version != RTLD_VERSION) + _FATAL("Dynamic linker version mismatch"); + + __mainprog_obj = obj; + atexit(cleanup); + } +#endif + + atexit(_fini); + _init(); + exit( main(argc, argv, env) ); } |
