X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fenv%2F__libc_start_main.c;h=2a8698bb19439809a7acc469caa6e2656c90a58c;hb=HEAD;hp=a38569d5d6aa03bad7e8085f5d19455957d69ade;hpb=8431d7972fd9be0fdcaff8516316d748e81724bb;p=musl

diff --git a/src/env/__libc_start_main.c b/src/env/__libc_start_main.c
index a38569d5..2a8698bb 100644
--- a/src/env/__libc_start_main.c
+++ b/src/env/__libc_start_main.c
@@ -1,26 +1,52 @@
+#include <elf.h>
 #include "libc.h"
 
 void __init_tls(size_t *);
 void __init_security(size_t *);
+void __init_ldso_ctors(void);
 
-int __libc_start_main(
-	int (*main)(int, char **, char **), int argc, char **argv,
-	int (*init)(int, char **, char **), void (*fini)(void),
-	void (*ldso_fini)(void))
-{
-	char **envp = argv+argc+1, **auxv = envp;
+#ifndef SHARED
+static void dummy() {}
+weak_alias(dummy, _init);
+extern void (*const __init_array_start)() __attribute__((weak));
+extern void (*const __init_array_end)() __attribute__((weak));
+#endif
+
+#define AUX_CNT 38
 
+extern size_t __hwcap, __sysinfo;
+extern char *__progname, *__progname_full;
+
+void __init_libc(char **envp, char *pn)
+{
+	size_t i, *auxv, aux[AUX_CNT] = { 0 };
 	__environ = envp;
-	do auxv++; while (*auxv);
-	libc.auxv = (void *)++auxv;
-	libc.ldso_fini = ldso_fini;
-	libc.fini = fini;
+	for (i=0; envp[i]; i++);
+	libc.auxv = auxv = (void *)(envp+i+1);
+	for (i=0; auxv[i]; i+=2) if (auxv[i]<AUX_CNT) aux[auxv[i]] = auxv[i+1];
+	__hwcap = aux[AT_HWCAP];
+	__sysinfo = aux[AT_SYSINFO];
 
-	__init_tls((void *)auxv);
-	__init_security((void *)auxv);
+	if (pn) {
+		__progname = __progname_full = pn;
+		for (i=0; pn[i]; i++) if (pn[i]=='/') __progname = pn+i+1;
+	}
+
+	__init_tls(aux);
+	__init_security(aux);
+}
+
+int __libc_start_main(int (*main)(int,char **,char **), int argc, char **argv)
+{
+	char **envp = argv+argc+1;
 
-	/* Execute constructors (static) linked into the application */
-	if (init) init(argc, argv, envp);
+#ifndef SHARED
+	__init_libc(envp, argv[0]);
+	_init();
+	uintptr_t a = (uintptr_t)&__init_array_start;
+	for (; a<(uintptr_t)&__init_array_end; a+=sizeof(void(*)()))
+		(*(void (**)())a)();
+#endif
 
 	/* Pass control to to application */
 	exit(main(argc, argv, envp));