| /* |
| * Copyright (c) 2020 Carlo Caione <ccaione@baylibre.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef ZEPHYR_INCLUDE_ARCH_ARM64_THREAD_STACK_H_ |
| #define ZEPHYR_INCLUDE_ARCH_ARM64_THREAD_STACK_H_ |
| |
| |
| #define ARCH_STACK_PTR_ALIGN 16 |
| |
| #if CONFIG_USERSPACE |
| #include <zephyr/arch/arm64/mm.h> |
| #define Z_ARM64_STACK_BASE_ALIGN MEM_DOMAIN_ALIGN_AND_SIZE |
| #define Z_ARM64_STACK_SIZE_ALIGN MEM_DOMAIN_ALIGN_AND_SIZE |
| #else |
| #define Z_ARM64_STACK_BASE_ALIGN ARCH_STACK_PTR_ALIGN |
| #define Z_ARM64_STACK_SIZE_ALIGN ARCH_STACK_PTR_ALIGN |
| #endif |
| |
| /* |
| * [ see also comments in arch/arm64/core/thread.c ] |
| * |
| * High memory addresses |
| * |
| * +-------------------+ <- thread.stack_info.start + thread.stack_info.size |
| * | TLS | |
| * +-------------------+ <- initial sp (computable with thread.stack_info.delta) |
| * | | |
| * | Used stack | |
| * | | |
| * +...................+ <- thread's current stack pointer |
| * | | |
| * | Unused stack | |
| * | | |
| * +-------------------+ <- thread.stack_info.start |
| * | Privileged stack | } K_(THREAD|KERNEL)_STACK_RESERVED |
| * +-------------------+ <- thread.stack_obj |
| * |
| * Low Memory addresses |
| */ |
| |
| /* thread stack */ |
| #define ARCH_THREAD_STACK_OBJ_ALIGN(size) Z_ARM64_STACK_BASE_ALIGN |
| #define ARCH_THREAD_STACK_SIZE_ADJUST(size) \ |
| ROUND_UP((size), Z_ARM64_STACK_SIZE_ALIGN) |
| #define ARCH_THREAD_STACK_RESERVED CONFIG_PRIVILEGED_STACK_SIZE |
| |
| /* kernel stack */ |
| #define ARCH_KERNEL_STACK_RESERVED 0 |
| #define ARCH_KERNEL_STACK_OBJ_ALIGN ARCH_STACK_PTR_ALIGN |
| |
| #ifndef _ASMLANGUAGE |
| |
| struct z_arm64_thread_stack_header { |
| char privilege_stack[CONFIG_PRIVILEGED_STACK_SIZE]; |
| } __packed __aligned(Z_ARM64_STACK_BASE_ALIGN); |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #endif /* ZEPHYR_INCLUDE_ARCH_ARM64_THREAD_STACK_H_ */ |
