6978160427
The arch_is_user_context() function is relying on the content of the tpidrro_el0 register to determine whether we are in user context or not. This register is set to '1' when in EL1 and set back to '0' when user threads are running in userspace. Signed-off-by: Carlo Caione <ccaione@baylibre.com>
63 lines
1 KiB
C
63 lines
1 KiB
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 Cortex-A public exception handling
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*
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* ARM-specific kernel exception handling interface. Included by arm64/arch.h.
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*/
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#ifndef ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_EXC_H_
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#define ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_EXC_H_
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/* for assembler, only works with constants */
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#ifdef _ASMLANGUAGE
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#else
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#include <zephyr/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct __esf {
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uint64_t x0;
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uint64_t x1;
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uint64_t x2;
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uint64_t x3;
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uint64_t x4;
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uint64_t x5;
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uint64_t x6;
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uint64_t x7;
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uint64_t x8;
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uint64_t x9;
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uint64_t x10;
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uint64_t x11;
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uint64_t x12;
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uint64_t x13;
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uint64_t x14;
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uint64_t x15;
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uint64_t x16;
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uint64_t x17;
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uint64_t x18;
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uint64_t x30;
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uint64_t spsr;
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uint64_t elr;
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#ifdef CONFIG_USERSPACE
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uint64_t tpidrro_el0;
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#endif
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};
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typedef struct __esf z_arch_esf_t;
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ASMLANGUAGE */
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#endif /* ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_EXC_H_ */
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