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/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
/* Default stack size. */
#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
/* Minimum guard size. */
#define ARCH_MIN_GUARD_SIZE 0
/* Required stack pointer alignment at beginning. SSE requires 16
bytes. */
#define STACK_ALIGN 16
/* Minimal stack size after allocating thread descriptor and guard size. */
#define MINIMAL_REST_STACK 2048
/* Alignment requirement for TCB. */
#define TCB_ALIGNMENT 16
/* Location of current stack frame.
__builtin_frame_address (0) returns the value of the hard frame
pointer, which will point at the location of the saved PC on the
stack. Below this in memory is the remainder of the linkage info,
occupying 12 bytes. Therefore in order to address from
CURRENT_STACK_FRAME using "struct layout", we need to have the macro
return the hard FP minus 12. Of course, this makes no sense
without the obsolete APCS stack layout... */
#define CURRENT_STACK_FRAME (__builtin_frame_address (0) - 12)
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