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| 1 | /* Copyright (C) 2002-2024 Free Software Foundation, Inc. |
|---|---|
| 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 |
| 15 | License along with the GNU C Library. If not, see |
| 16 | <https://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | /* Default stack size. */ |
| 19 | #define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) |
| 20 | |
| 21 | /* Minimum guard size. */ |
| 22 | #define ARCH_MIN_GUARD_SIZE 0 |
| 23 | |
| 24 | /* Required stack pointer alignment at beginning. SSE requires 16 |
| 25 | bytes. */ |
| 26 | #define STACK_ALIGN 16 |
| 27 | |
| 28 | /* Minimal stack size after allocating thread descriptor and guard size. */ |
| 29 | #define MINIMAL_REST_STACK 2048 |
| 30 | |
| 31 | |
| 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) |
| 42 |
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