PR preprocessor/63831
[official-gcc.git] / gcc / ada / vx_stack_info.c
bloba6258925082af9d4ccb5aa4200f42032275b9a8f
1 /****************************************************************************
2 * *
3 * GNAT COMPILER COMPONENTS *
4 * *
5 * V X _ S T A C K _ I N F O *
6 * *
7 * C Implementation File *
8 * *
9 * Copyright (C) 2007-2009 Free Software Foundation, Inc. *
10 * *
11 * GNAT is free software; you can redistribute it and/or modify it under *
12 * terms of the GNU General Public License as published by the Free Soft- *
13 * ware Foundation; either version 3, or (at your option) any later ver- *
14 * sion. GNAT is distributed in the hope that it will be useful, but WITH- *
15 * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
16 * or FITNESS FOR A PARTICULAR PURPOSE. *
17 * *
18 * As a special exception under Section 7 of GPL version 3, you are granted *
19 * additional permissions described in the GCC Runtime Library Exception, *
20 * version 3.1, as published by the Free Software Foundation. *
21 * *
22 * You should have received a copy of the GNU General Public License and *
23 * a copy of the GCC Runtime Library Exception along with this program; *
24 * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see *
25 * <http://www.gnu.org/licenses/>. *
26 * *
27 * GNAT was originally developed by the GNAT team at New York University. *
28 * Extensive contributions were provided by Ada Core Technologies Inc. *
29 * *
30 ****************************************************************************/
32 /* VxWorks-specific file to have access to task-specific data and be able
33 to extract the stack boundaries for stack checking. */
35 #include <taskLib.h>
37 typedef struct
39 int size;
40 char *base;
41 char *end;
42 } stack_info;
44 /* __gnat_get_stack_info is used by s-stchop.adb only for VxWorks. This
45 procedure fills the stack information associated to the currently
46 executing task. */
47 extern void __gnat_get_stack_info (stack_info *vxworks_stack_info);
49 void
50 __gnat_get_stack_info (stack_info *vxworks_stack_info)
52 TASK_DESC descriptor;
54 /* Ask the VxWorks kernel about stack values */
55 taskInfoGet (taskIdSelf (), &descriptor);
57 /* Fill the stack data with the information provided by the kernel */
58 vxworks_stack_info->size = descriptor.td_stackSize;
59 vxworks_stack_info->base = descriptor.td_pStackBase;
60 vxworks_stack_info->end = descriptor.td_pStackEnd;