projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 04277e02 | 1 | /* Copyright (C) 2002-2019 Free Software Foundation, Inc. |
| 76a50749 UD |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 76a50749 | 18 | |
| f78deea6 UD |
19 | /* Default stack size. */ |
| 20 | #define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) | |
| 76a50749 | 21 | |
| f78deea6 UD |
22 | /* Required stack pointer alignment at beginning. SSE requires 16 |
| 23 | bytes. */ | |
| 24 | #define STACK_ALIGN 16 | |
| 76a50749 | 25 | |
| f78deea6 UD |
26 | /* Minimal stack size after allocating thread descriptor and guard size. */ |
| 27 | #define MINIMAL_REST_STACK 2048 | |
| 28 | ||
| 5744c68d RM |
29 | /* Alignment requirement for TCB. |
| 30 | ||
| 31 | We need to store post-AVX vector registers in the TCB and we want the | |
| 32 | storage to be aligned to at least 32 bytes. | |
| 33 | ||
| 34 | Some processors such as Intel Atom pay a big penalty on every | |
| 35 | access using a segment override if that segment's base is not | |
| 36 | aligned to the size of a cache line. (See Intel 64 and IA-32 | |
| 37 | Architectures Optimization Reference Manual, section 13.3.3.3, | |
| 38 | "Segment Base".) On such machines, a cache line is 64 bytes. */ | |
| 39 | #define TCB_ALIGNMENT 64 | |
| f78deea6 | 40 | |
| f78deea6 | 41 | |
| a87731e2 UD |
42 | /* Location of current stack frame. The frame pointer is not usable. */ |
| 43 | #define CURRENT_STACK_FRAME \ | |
| 24d8f4b7 | 44 | ({ register char *frame __asm__("rsp"); frame; }) |