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authorRoland McGrath <roland@gnu.org>1995-05-09 07:03:38 +0000
committerRoland McGrath <roland@gnu.org>1995-05-09 07:03:38 +0000
commit273d56ce89f26233cb7a703c542d2732adbea87d (patch)
treee489d7e9e6cd644a5d0d85d4b39a8c75692e3633 /hurd/hurdstartup.h
parent421f82e5cc8f81ab003247d771bcecbad799be85 (diff)
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(__data_start): Define this symbol as the first thing in .data.
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diff --git a/hurd/hurdstartup.h b/hurd/hurdstartup.h
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+/* 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 */