(__data_start): Define this symbol as the first thing in .data.

1 files changed, 63 insertions, 0 deletions

diff --git a/hurd/hurdstartup.h b/hurd/hurdstartup.h
new file mode 100644
index 0000000000..fd6a36605d
--- /dev/null
+++ b/hurd/hurdstartup.h
@@ -0,0 +1,63 @@
+/* Data from initial program startup for running under the GNU Hurd.
+Copyright (C) 1995 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#ifndef _HURDSTARTUP_H
+#define _HURDSTARTUP_H 1
+
+
+/* Interesting data saved from the exec_startup reply.
+   The DATA argument to *MAIN (see below) points to:
+
+    int argc;
+    char *argv[argc];
+    char *argv_terminator = NULL;
+    char *envp[?];
+    char *envp_terminator = NULL;
+    struct hurd_startup_data data;
+
+*/   
+
+struct hurd_startup_data
+  {
+    int flags;
+    mach_port_t *dtable;
+    mach_msg_type_number_t dtablesize;
+    mach_port_t *portarray;
+    mach_msg_type_number_t portarraysize;
+    int *intarray;
+    mach_msg_type_number_t intarraysize;
+    vm_address_t stack_base;
+    vm_size_t stack_size;
+    vm_address_t phdr;
+    vm_size_t phdrsz;
+    vm_address_t user_entry;
+  };
+
+
+/* Initialize Mach RPCs; do initial handshake with the exec server (or
+   extract the arguments from the stack in the case of the bootstrap task);
+   finally, call *MAIN with the information gleaned.  That function is not
+   expected to return.  ARGPTR should be the address of the first argument
+   of the entry point function that is called with the stack exactly as the
+   exec server or kernel sets it.  */
+
+extern void _hurd_startup (void **argptr, void (*main) (int *data));
+
+
+#endif	/* hurdstartup.h */