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arm: Generate privileged stacks

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This patch adds the generation and incorporation of privileged stack
regions that are used by ARM user mode threads.  This patch adds the
infrastructure for privileged stacks.  Later patches will utilize the
generated stacks and helper functions.

Signed-off-by: Chunlin Han <chunlin.han@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
This commit is contained in:
Chunlin Han 2018-02-01 01:19:49 -06:00 • committed by Andrew Boie
commit 18560a01a4
10 changed files with 835 additions and 6 deletions
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13
include/linker/priv_stacks-rom.ld Normal file
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/*
* Copyright (c) 2017 Linaro Limited.
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifdef CONFIG_USERSPACE
/* Kept in RAM on non-XIP */
#ifdef CONFIG_XIP
*(".priv_stacks.rodata*")
#endif
#endif /* CONFIG_USERSPACE */