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Diffstat (limited to 'sysdeps/generic/dl-sysdep.c')
-rw-r--r--sysdeps/generic/dl-sysdep.c37
1 files changed, 27 insertions, 10 deletions
diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c
index e18f0b8..4f97f85 100644
--- a/sysdeps/generic/dl-sysdep.c
+++ b/sysdeps/generic/dl-sysdep.c
@@ -26,11 +26,14 @@
#include <link.h>
#include <unistd.h>
+#include <dl-machine.h>
extern int _dl_argc;
extern char **_dl_argv;
extern char **_environ;
extern size_t _dl_pagesize;
+extern const char *_dl_platform;
+extern size_t _dl_platformlen;
extern void _end;
extern void ENTRY_POINT (void);
@@ -57,6 +60,7 @@ _dl_sysdep_start (void **start_argptr,
_dl_argc = *(long *) start_argptr;
_dl_argv = (char **) start_argptr + 1;
_environ = &_dl_argv[_dl_argc + 1];
+ _dl_platform = NULL; /* Default to nothing known about the platform. */
start_argptr = (void **) _environ;
while (*start_argptr)
++start_argptr;
@@ -93,6 +97,12 @@ _dl_sysdep_start (void **start_argptr,
case AT_EGID:
egid = av->a_un.a_val;
break;
+ case AT_PLATFORM:
+ _dl_platform = av->a_un.a_ptr;
+ break;
+ case AT_HWCAP:
+ /* Well, what shall we use? A string or an integer with bits? */
+ break;
}
/* Linux doesn't provide us with any of these values on the stack
@@ -107,21 +117,28 @@ _dl_sysdep_start (void **start_argptr,
__libc_enable_secure = uid != euid || gid != egid;
+ if (_dl_pagesize == 0)
+ _dl_pagesize = __getpagesize ();
+
#ifdef DL_SYSDEP_INIT
DL_SYSDEP_INIT;
#endif
+#ifdef DL_PLATFORM_INIT
+ DL_PLATFORM_INIT;
+#endif
+
+ /* Determine the length of the platform name. */
+ if (_dl_platform != NULL)
+ _dl_platformlen = strlen (_dl_platform);
+
if (__sbrk (0) == &_end)
- {
- /* The dynamic linker was run as a program, and so the initial break
- starts just after our bss, at &_end. The malloc in dl-minimal.c
- will consume the rest of this page, so tell the kernel to move the
- break up that far. When the user program examines its break, it
- will see this new value and not clobber our data. */
- size_t pg = __getpagesize ();
-
- __sbrk (pg - ((&_end - (void *) 0) & (pg - 1)));
- }
+ /* The dynamic linker was run as a program, and so the initial break
+ starts just after our bss, at &_end. The malloc in dl-minimal.c
+ will consume the rest of this page, so tell the kernel to move the
+ break up that far. When the user program examines its break, it
+ will see this new value and not clobber our data. */
+ __sbrk (_dl_pagesize - ((&_end - (void *) 0) & (_dl_pagesize - 1)));
(*dl_main) (phdr, phnum, &user_entry);
return user_entry;