| /* |
| * Copyright (c) 2016 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <kernel.h> |
| #include <kernel_internal.h> |
| #include <kernel_structs.h> |
| #include <wait_q.h> |
| #include <string.h> |
| |
| /* forward declaration to asm function to adjust setup the arguments |
| * to z_thread_entry() since this arch puts the first four arguments |
| * in r4-r7 and not on the stack |
| */ |
| void z_thread_entry_wrapper(k_thread_entry_t, void *, void *, void *); |
| |
| struct init_stack_frame { |
| /* top of the stack / most recently pushed */ |
| |
| /* Used by z_thread_entry_wrapper. pulls these off the stack and |
| * into argument registers before calling z_thread_entry() |
| */ |
| k_thread_entry_t entry_point; |
| void *arg1; |
| void *arg2; |
| void *arg3; |
| |
| /* least recently pushed */ |
| }; |
| |
| |
| void z_arch_new_thread(struct k_thread *thread, k_thread_stack_t *stack, |
| size_t stack_size, k_thread_entry_t thread_func, |
| void *arg1, void *arg2, void *arg3, |
| int priority, unsigned int options) |
| { |
| char *stack_memory = Z_THREAD_STACK_BUFFER(stack); |
| Z_ASSERT_VALID_PRIO(priority, thread_func); |
| |
| struct init_stack_frame *iframe; |
| |
| z_new_thread_init(thread, stack_memory, stack_size, priority, options); |
| |
| /* Initial stack frame data, stored at the base of the stack */ |
| iframe = (struct init_stack_frame *) |
| STACK_ROUND_DOWN(stack_memory + stack_size - sizeof(*iframe)); |
| |
| /* Setup the initial stack frame */ |
| iframe->entry_point = thread_func; |
| iframe->arg1 = arg1; |
| iframe->arg2 = arg2; |
| iframe->arg3 = arg3; |
| |
| thread->callee_saved.sp = (u32_t)iframe; |
| thread->callee_saved.ra = (u32_t)z_thread_entry_wrapper; |
| thread->callee_saved.key = NIOS2_STATUS_PIE_MSK; |
| /* Leave the rest of thread->callee_saved junk */ |
| } |