4  * SPDX-License-Identifier: Apache-2.0
31 /*  initial stack frame */
52 	return (thread->base.user_options & K_USER) != 0;  in is_user()
56 /* Set all stack-related architecture variables for the provided thread */
62 		thread->arch.priv_stack_start =  in setup_stack_vars()
63 			(uint32_t)z_priv_stack_find(thread->stack_obj);  in setup_stack_vars()
65 		thread->arch.priv_stack_start =	(uint32_t)(thread->stack_obj);  in setup_stack_vars()
67 		thread->arch.priv_stack_start += Z_ARC_STACK_GUARD_SIZE;  in setup_stack_vars()
69 		thread->arch.priv_stack_start = 0;  in setup_stack_vars()
76 		thread->arch.k_stack_top = thread->arch.priv_stack_start;  in setup_stack_vars()
77 		thread->arch.k_stack_base = (thread->arch.priv_stack_start +  in setup_stack_vars()
79 		thread->arch.u_stack_top = thread->stack_info.start;  in setup_stack_vars()
80 		thread->arch.u_stack_base = (thread->stack_info.start +  in setup_stack_vars()
81 					     thread->stack_info.size);  in setup_stack_vars()
85 		thread->arch.k_stack_top = (uint32_t)thread->stack_info.start;  in setup_stack_vars()
86 		thread->arch.k_stack_base = (uint32_t)(thread->stack_info.start +  in setup_stack_vars()
87 						    thread->stack_info.size);  in setup_stack_vars()
89 		thread->arch.u_stack_top = 0;  in setup_stack_vars()
90 		thread->arch.u_stack_base = 0;  in setup_stack_vars()
96 /* Get the initial stack frame pointer from the thread's stack buffer. */
102 		/* Initial stack frame for a user thread is slightly larger;  in get_iframe()
110 					      thread->arch.priv_stack_start +  in get_iframe()
112 		uframe->user_sp = (uint32_t)stack_ptr;  in get_iframe()
113 		return &uframe->iframe;  in get_iframe()
120  * Pre-populate values in the registers inside _callee_saved_stack struct
121  * so these registers have pre-defined values when new thread begins
140 	regs->TLSREG = thread->tls;  in arch_setup_callee_saved_regs()
143 	regs->r30 = thread->tls;  in arch_setup_callee_saved_regs()
149  * The initial context is a basic stack frame that contains arguments for
161 	/* Set up initial stack frame */  in arch_new_thread()
166 	 * mode sleep instructions, and it enables a form of denial-of-service  in arch_new_thread()
171 	iframe->status32 = _ARC_V2_STATUS32_US | _ARC_V2_STATUS32_DZ;  in arch_new_thread()
173 		iframe->pc = (uint32_t)z_user_thread_entry_wrapper;  in arch_new_thread()
175 		iframe->pc = (uint32_t)z_thread_entry_wrapper;  in arch_new_thread()
178 	iframe->status32 = _ARC_V2_STATUS32_DZ;  in arch_new_thread()
179 	iframe->pc = ((uintptr_t)z_thread_entry_wrapper);  in arch_new_thread()
182 	iframe->sec_stat = z_arc_v2_aux_reg_read(_ARC_V2_SEC_STAT);  in arch_new_thread()
184 	iframe->r0 = (uintptr_t)entry;  in arch_new_thread()
185 	iframe->r1 = (uintptr_t)p1;  in arch_new_thread()
186 	iframe->r2 = (uintptr_t)p2;  in arch_new_thread()
187 	iframe->r3 = (uintptr_t)p3;  in arch_new_thread()
191 	iframe->sec_stat |= _ARC_V2_SEC_STAT_SSC;  in arch_new_thread()
193 	iframe->status32 |= _ARC_V2_STATUS32_SC;  in arch_new_thread()
197 	iframe->status32 |= _ARC_V2_STATUS32_AD;  in arch_new_thread()
200 	thread->switch_handle = thread;  in arch_new_thread()
201 	thread->arch.relinquish_cause = _CAUSE_COOP;  in arch_new_thread()
202 	thread->callee_saved.sp =  in arch_new_thread()
203 		(uintptr_t)iframe - ___callee_saved_stack_t_SIZEOF;  in arch_new_thread()
205 	arch_setup_callee_saved_regs(thread, thread->callee_saved.sp);  in arch_new_thread()
207 	/* initial values in all other regs/k_thread entries are irrelevant */  in arch_new_thread()
237 			      (uint32_t)arch_current_thread()->stack_info.start,  in arch_user_mode_enter()
238 			      (arch_current_thread()->stack_info.size -  in arch_user_mode_enter()
239 			       arch_current_thread()->stack_info.delta), arch_current_thread());  in arch_user_mode_enter()
247 	unsigned int key;  in arch_float_disable()  local
251 	key = irq_lock();  in arch_float_disable()
254 	thread->base.user_options &= ~K_FP_REGS;  in arch_float_disable()
256 	irq_unlock(key);  in arch_float_disable()
264 	unsigned int key;  in arch_float_enable()  local
268 	key = irq_lock();  in arch_float_enable()
271 	thread->base.user_options |= K_FP_REGS;  in arch_float_enable()
273 	irq_unlock(key);  in arch_float_enable()
309 	k_spinlock_key_t key = k_spin_lock(&lock);  in arc_dsp_disable()  local
312 	thread->base.user_options &= ~(uint8_t)options;  in arc_dsp_disable()
314 	k_spin_unlock(&lock, key);  in arc_dsp_disable()
320 	k_spinlock_key_t key = k_spin_lock(&lock);  in arc_dsp_enable()  local
323 	thread->base.user_options |= (uint8_t)options;  in arc_dsp_enable()
325 	k_spin_unlock(&lock, key);  in arc_dsp_enable()
332 	k_spinlock_key_t key;  in arc_vpx_lock()  local
335 	key = k_spin_lock(&lock);  in arc_vpx_lock()
337 	id = _current_cpu->id;  in arc_vpx_lock()
339 	__ASSERT(!arch_is_in_isr() && (arch_current_thread()->base.cpu_mask == BIT(id)), "");  in arc_vpx_lock()
341 	k_spin_unlock(&lock, key);  in arc_vpx_lock()
353 	k_spinlock_key_t key;  in arc_vpx_unlock()  local
356 	key = k_spin_lock(&lock);  in arc_vpx_unlock()
358 	__ASSERT(!arch_is_in_isr() && (arch_current_thread()->base.cpu_mask == BIT(id)), "");  in arc_vpx_unlock()
360 	id = _current_cpu->id;  in arc_vpx_unlock()
361 	k_spin_unlock(&lock, key);  in arc_vpx_unlock()