zephyr/arch/posix/include/kernel_arch_data.h
Andrew Boie 618426d6e7 kernel: add Z_STACK_PTR_ALIGN ARCH_STACK_PTR_ALIGN
This operation is formally defined as rounding down a potential
stack pointer value to meet CPU and ABI requirments.

This was previously defined ad-hoc as STACK_ROUND_DOWN().

A new architecture constant ARCH_STACK_PTR_ALIGN is added.
Z_STACK_PTR_ALIGN() is defined in terms of it. This used to
be inconsistently specified as STACK_ALIGN or STACK_PTR_ALIGN;
in the latter case, STACK_ALIGN meant something else, typically
a required alignment for the base of a stack buffer.

STACK_ROUND_UP() only used in practice by Risc-V, delete
elsewhere.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2020-04-21 18:45:45 -04:00

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C

/*
* Copyright (c) 2013-2016 Wind River Systems, Inc.
* Copyright (c) 2017 Oticon A/S
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Private kernel definitions (POSIX)
*
*/
#ifndef ZEPHYR_ARCH_POSIX_INCLUDE_KERNEL_ARCH_DATA_H_
#define ZEPHYR_ARCH_POSIX_INCLUDE_KERNEL_ARCH_DATA_H_
#endif /* ZEPHYR_ARCH_POSIX_INCLUDE_KERNEL_ARCH_DATA_H_ */