746c59c82a
Up until now, the `__thread` keyword has been used for declaring variables as Thread local storage. However, `__thread` is a GNU specific keyword which thus limits compatibility with other toolchains (for instance IAR). This PR intoduces a new macro `Z_THREAD_LOCAL` which expands to the corresponding C11, C23 or C++11 standard keyword based on the standard that is specified during compilation, else it uses the old `__thread` keyword. Signed-off-by: Daniel Flodin <daniel.flodin@iar.com>
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/*
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* Copyright (c) 2018 Intel Corporation
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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 Thread entry
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*
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* This file provides the common thread entry function
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*/
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#include <zephyr/kernel.h>
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#ifdef CONFIG_CURRENT_THREAD_USE_TLS
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#include <zephyr/random/random.h>
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Z_THREAD_LOCAL k_tid_t z_tls_current;
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#endif
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#ifdef CONFIG_STACK_CANARIES_TLS
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extern Z_THREAD_LOCAL volatile uintptr_t __stack_chk_guard;
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#endif /* CONFIG_STACK_CANARIES_TLS */
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/*
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* Common thread entry point function (used by all threads)
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*
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* This routine invokes the actual thread entry point function and passes
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* it three arguments. It also handles graceful termination of the thread
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* if the entry point function ever returns.
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*
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* This routine does not return, and is marked as such so the compiler won't
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* generate preamble code that is only used by functions that actually return.
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*/
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FUNC_NORETURN void z_thread_entry(k_thread_entry_t entry,
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void *p1, void *p2, void *p3)
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{
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#ifdef CONFIG_CURRENT_THREAD_USE_TLS
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z_tls_current = k_sched_current_thread_query();
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#endif
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#ifdef CONFIG_STACK_CANARIES_TLS
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uintptr_t stack_guard;
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sys_rand_get((uint8_t *)&stack_guard, sizeof(stack_guard));
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__stack_chk_guard = stack_guard;
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__stack_chk_guard <<= 8;
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#endif /* CONFIG_STACK_CANARIES */
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entry(p1, p2, p3);
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k_thread_abort(k_current_get());
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/*
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* Compiler can't tell that k_thread_abort() won't return and issues a
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* warning unless we tell it that control never gets this far.
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*/
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CODE_UNREACHABLE; /* LCOV_EXCL_LINE */
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}
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