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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /sysdeps/powerpc/elf
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'sysdeps/powerpc/elf')
-rw-r--r--sysdeps/powerpc/elf/libc-start.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/sysdeps/powerpc/elf/libc-start.c b/sysdeps/powerpc/elf/libc-start.c
new file mode 100644
index 0000000000..eed3e06c8a
--- /dev/null
+++ b/sysdeps/powerpc/elf/libc-start.c
@@ -0,0 +1,100 @@
+/* Copyright (C) 1998,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <bp-start.h>
+#include <bp-sym.h>
+
+extern int __cache_line_size;
+weak_extern (__cache_line_size)
+
+/* The main work is done in the generic function. */
+#define LIBC_START_MAIN generic_start_main
+#define LIBC_START_DISABLE_INLINE
+#define LIBC_START_MAIN_AUXVEC_ARG
+#define MAIN_AUXVEC_ARG
+#define INIT_MAIN_ARGS
+#include <sysdeps/generic/libc-start.c>
+
+
+struct startup_info
+{
+ void *__unbounded sda_base;
+ int (*main) (int, char **, char **, void *);
+ int (*init) (int, char **, char **, void *);
+ void (*fini) (void);
+};
+
+
+int
+/* GKM FIXME: GCC: this should get __BP_ prefix by virtue of the
+ BPs in the arglist of startup_info.main and startup_info.init. */
+BP_SYM (__libc_start_main) (int argc, char *__unbounded *__unbounded ubp_av,
+ char *__unbounded *__unbounded ubp_ev,
+ ElfW(auxv_t) *__unbounded auxvec,
+ void (*rtld_fini) (void),
+ struct startup_info *__unbounded stinfo,
+ char *__unbounded *__unbounded stack_on_entry)
+{
+#if __BOUNDED_POINTERS__
+ char **argv;
+#else
+# define argv ubp_av
+#endif
+
+ /* the PPC SVR4 ABI says that the top thing on the stack will
+ be a NULL pointer, so if not we assume that we're being called
+ as a statically-linked program by Linux... */
+ if (*stack_on_entry != NULL)
+ {
+ char *__unbounded *__unbounded temp;
+ /* ...in which case, we have argc as the top thing on the
+ stack, followed by argv (NULL-terminated), envp (likewise),
+ and the auxilary vector. */
+ /* 32/64-bit agnostic load from stack */
+ argc = *(long int *__unbounded) stack_on_entry;
+ ubp_av = stack_on_entry + 1;
+ ubp_ev = ubp_av + argc + 1;
+#ifdef HAVE_AUX_VECTOR
+ temp = ubp_ev;
+ while (*temp != NULL)
+ ++temp;
+ auxvec = (ElfW(auxv_t) *)++temp;
+#endif
+ rtld_fini = NULL;
+ }
+
+ /* Initialize the __cache_line_size variable from the aux vector. */
+ for (ElfW(auxv_t) *av = auxvec; av->a_type != AT_NULL; ++av)
+ switch (av->a_type)
+ {
+ case AT_DCACHEBSIZE:
+ {
+ int *cls = & __cache_line_size;
+ if (cls != NULL)
+ *cls = av->a_un.a_val;
+ }
+ break;
+ }
+
+ return generic_start_main (stinfo->main, argc, ubp_av, auxvec,
+ stinfo->init, stinfo->fini, rtld_fini,
+ stack_on_entry);
+}