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xtensa: implements arch_thread_priv_stack_space_get

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This implements arch_thread_priv_stack_space_get() so this can
be used to figure out how much privileged stack space is used.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2024-07-31 12:17:40 -07:00 • committed by Anas Nashif
commit 55ee97c7d2
2 changed files with 18 additions and 0 deletions
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1
arch/Kconfig
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@ -136,6 +136,7 @@ config XTENSA
select ARCH_MEM_DOMAIN_DATA if USERSPACE select ARCH_MEM_DOMAIN_DATA if USERSPACE
select ARCH_HAS_DIRECTED_IPIS select ARCH_HAS_DIRECTED_IPIS
select THREAD_STACK_INFO select THREAD_STACK_INFO
select ARCH_HAS_THREAD_PRIV_STACK_SPACE_GET if USERSPACE
help help
Xtensa architecture Xtensa architecture

17
arch/xtensa/core/thread.c
View file

@ -4,6 +4,7 @@
* SPDX-License-Identifier: Apache-2.0 * SPDX-License-Identifier: Apache-2.0
*/ */
#include <errno.h>
#include <string.h> #include <string.h>
#include <zephyr/kernel.h> #include <zephyr/kernel.h>
@ -170,4 +171,20 @@ FUNC_NORETURN void arch_user_mode_enter(k_thread_entry_t user_entry,
CODE_UNREACHABLE; CODE_UNREACHABLE;
} }
int arch_thread_priv_stack_space_get(const struct k_thread *thread, size_t *stack_size,
size_t *unused_ptr)
{
struct xtensa_thread_stack_header *hdr_stack_obj;
if ((thread->base.user_options & K_USER) != K_USER) {
return -EINVAL;
}
hdr_stack_obj = (struct xtensa_thread_stack_header *)thread->stack_obj;
return z_stack_space_get(&hdr_stack_obj->privilege_stack[0],
sizeof(hdr_stack_obj->privilege_stack),
unused_ptr);
}
#endif /* CONFIG_USERSPACE */ #endif /* CONFIG_USERSPACE */