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https://github.com/zephyrproject-rtos/zephyr
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618426d6e7
This operation is formally defined as rounding down a potential stack pointer value to meet CPU and ABI requirments. This was previously defined ad-hoc as STACK_ROUND_DOWN(). A new architecture constant ARCH_STACK_PTR_ALIGN is added. Z_STACK_PTR_ALIGN() is defined in terms of it. This used to be inconsistently specified as STACK_ALIGN or STACK_PTR_ALIGN; in the latter case, STACK_ALIGN meant something else, typically a required alignment for the base of a stack buffer. STACK_ROUND_UP() only used in practice by Risc-V, delete elsewhere. Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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* Copyright (c) 2010-2015 Wind River Systems, Inc.
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* Copyright (c) 2017 Oticon A/S
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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 support primitives
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*
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* This module provides core thread related primitives for the POSIX
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* architecture
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*/
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#include <toolchain.h>
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#include <kernel_structs.h>
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#include <ksched.h>
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#include <wait_q.h>
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#include "posix_core.h"
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#include <arch/posix/posix_soc_if.h>
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/* Note that in this arch we cheat quite a bit: we use as stack a normal
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* pthreads stack and therefore we ignore the stack size
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*/
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void arch_new_thread(struct k_thread *thread, k_thread_stack_t *stack,
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size_t stack_size, k_thread_entry_t thread_func,
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void *arg1, void *arg2, void *arg3,
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int priority, unsigned int options)
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{
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char *stack_memory = Z_THREAD_STACK_BUFFER(stack);
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posix_thread_status_t *thread_status;
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z_new_thread_init(thread, stack_memory, stack_size);
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/* We store it in the same place where normal archs store the
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* "initial stack frame"
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*/
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thread_status = (posix_thread_status_t *)
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Z_STACK_PTR_ALIGN(stack_memory + stack_size
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- sizeof(*thread_status));
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/* z_thread_entry() arguments */
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thread_status->entry_point = thread_func;
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thread_status->arg1 = arg1;
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thread_status->arg2 = arg2;
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thread_status->arg3 = arg3;
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#if defined(CONFIG_ARCH_HAS_THREAD_ABORT)
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thread_status->aborted = 0;
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#endif
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thread->callee_saved.thread_status = thread_status;
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posix_new_thread(thread_status);
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}
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void posix_new_thread_pre_start(void)
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{
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posix_irq_full_unlock();
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}
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