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23c77f6018
rseq support will use a 32-byte aligned field in struct pthread, so the whole struct needs to have at least that alignment. nptl/tst-tls3mod.c uses TCB_ALIGNMENT, therefore include <descr.h> to obtain the fallback definition. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
42 lines
1.7 KiB
C
42 lines
1.7 KiB
C
/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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/* Default stack size. */
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#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
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/* Minimum guard size. */
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#define ARCH_MIN_GUARD_SIZE 0
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/* Required stack pointer alignment at beginning. SSE requires 16
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bytes. */
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#define STACK_ALIGN 16
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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/* Location of current stack frame.
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__builtin_frame_address (0) returns the value of the hard frame
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pointer, which will point at the location of the saved PC on the
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stack. Below this in memory is the remainder of the linkage info,
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occupying 12 bytes. Therefore in order to address from
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CURRENT_STACK_FRAME using "struct layout", we need to have the macro
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return the hard FP minus 12. Of course, this makes no sense
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without the obsolete APCS stack layout... */
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#define CURRENT_STACK_FRAME (__builtin_frame_address (0) - 12)
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