99a8155914
In the current implementation both SPSR and ELR registers are saved with the callee-saved registers and restored by the context-switch routine. To support nested IRQs we have to save those on the stack when entering and exiting from an ISR. Since the values are now carried on the stack we can now add those to the ESF and the initial stack and take care to restore them for new threads using the new thread wrapper routine. Signed-off-by: Carlo Caione <ccaione@baylibre.com>
52 lines
892 B
C
52 lines
892 B
C
/*
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* Copyright (c) 2019 Carlo Caione <ccaione@baylibre.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Per-arch thread definition
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*
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* This file contains definitions for
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*
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* struct _thread_arch
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* struct _callee_saved
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*
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* necessary to instantiate instances of struct k_thread.
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*/
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#ifndef ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_THREAD_H_
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#define ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_THREAD_H_
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#ifndef _ASMLANGUAGE
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#include <zephyr/types.h>
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struct _callee_saved {
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u64_t x19;
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u64_t x20;
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u64_t x21;
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u64_t x22;
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u64_t x23;
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u64_t x24;
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u64_t x25;
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u64_t x26;
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u64_t x27;
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u64_t x28;
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u64_t x29; /* FP */
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u64_t x30; /* LR */
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u64_t sp;
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};
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typedef struct _callee_saved _callee_saved_t;
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struct _thread_arch {
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u32_t swap_return_value;
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};
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typedef struct _thread_arch _thread_arch_t;
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#endif /* _ASMLANGUAGE */
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#endif /* ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_THREAD_H_ */
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