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-rw-r--r--lib/csu/alpha/crt1.c88
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) );
}
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