51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <ksched.h>
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/* forward declaration to asm function to adjust setup the arguments
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* to z_thread_entry() since this arch puts the first four arguments
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* in r4-r7 and not on the stack
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*/
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void z_thread_entry_wrapper(k_thread_entry_t, void *, void *, void *);
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struct init_stack_frame {
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/* top of the stack / most recently pushed */
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/* Used by z_thread_entry_wrapper. pulls these off the stack and
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* into argument registers before calling z_thread_entry()
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*/
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k_thread_entry_t entry_point;
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void *arg1;
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void *arg2;
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void *arg3;
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/* least recently pushed */
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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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char *stack_ptr, k_thread_entry_t entry,
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void *arg1, void *arg2, void *arg3)
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{
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struct init_stack_frame *iframe;
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/* Initial stack frame data, stored at the base of the stack */
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iframe = Z_STACK_PTR_TO_FRAME(struct init_stack_frame, stack_ptr);
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/* Setup the initial stack frame */
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iframe->entry_point = entry;
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iframe->arg1 = arg1;
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iframe->arg2 = arg2;
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iframe->arg3 = arg3;
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thread->callee_saved.sp = (uint32_t)iframe;
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thread->callee_saved.ra = (uint32_t)z_thread_entry_wrapper;
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thread->callee_saved.key = NIOS2_STATUS_PIE_MSK;
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/* Leave the rest of thread->callee_saved junk */
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}
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