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50 lines
1.3 KiB
50 lines
1.3 KiB
/* |
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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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