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b168057a | 1 | /* Copyright (C) 2002-2015 Free Software Foundation, Inc. |
02a9f771 DJ |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
ab84e3ff PE |
15 | License along with the GNU C Library. If not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
02a9f771 DJ |
17 | |
18 | /* Default stack size. */ | |
19 | #define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) | |
20 | ||
21 | /* Required stack pointer alignment at beginning. SSE requires 16 | |
22 | bytes. */ | |
23 | #define STACK_ALIGN 16 | |
24 | ||
25 | /* Minimal stack size after allocating thread descriptor and guard size. */ | |
26 | #define MINIMAL_REST_STACK 2048 | |
27 | ||
28 | /* Alignment requirement for TCB. */ | |
29 | #define TCB_ALIGNMENT 16 | |
30 | ||
31 | ||
f5b8dd54 DJ |
32 | /* Location of current stack frame. |
33 | ||
34 | __builtin_frame_address (0) returns the value of the hard frame | |
35 | pointer, which will point at the location of the saved PC on the | |
36 | stack. Below this in memory is the remainder of the linkage info, | |
37 | occupying 12 bytes. Therefore in order to address from | |
38 | CURRENT_STACK_FRAME using "struct layout", we need to have the macro | |
39 | return the hard FP minus 12. Of course, this makes no sense | |
40 | without the obsolete APCS stack layout... */ | |
41 | #define CURRENT_STACK_FRAME (__builtin_frame_address (0) - 12) |