9  * @brief New thread creation for ARCv2
11  * Core thread related primitives for the ARCv2 processor architecture.
45 static bool is_user(struct k_thread *thread)  in is_user()  argument
47 	return (thread->base.user_options & K_USER) != 0;  in is_user()
51 /* Set all stack-related architecture variables for the provided thread */
52 static void setup_stack_vars(struct k_thread *thread)  in setup_stack_vars()  argument
55 	if (is_user(thread)) {  in setup_stack_vars()
57 		thread->arch.priv_stack_start =  in setup_stack_vars()
58 			(uint32_t)z_priv_stack_find(thread->stack_obj);  in setup_stack_vars()
60 		thread->arch.priv_stack_start =	(uint32_t)(thread->stack_obj);  in setup_stack_vars()
62 		thread->arch.priv_stack_start += Z_ARC_STACK_GUARD_SIZE;  in setup_stack_vars()
64 		thread->arch.priv_stack_start = 0;  in setup_stack_vars()
70 	if (is_user(thread)) {  in setup_stack_vars()
71 		thread->arch.k_stack_top = thread->arch.priv_stack_start;  in setup_stack_vars()
72 		thread->arch.k_stack_base = (thread->arch.priv_stack_start +  in setup_stack_vars()
74 		thread->arch.u_stack_top = thread->stack_info.start;  in setup_stack_vars()
75 		thread->arch.u_stack_base = (thread->stack_info.start +  in setup_stack_vars()
76 					     thread->stack_info.size);  in setup_stack_vars()
80 		thread->arch.k_stack_top = (uint32_t)thread->stack_info.start;  in setup_stack_vars()
81 		thread->arch.k_stack_base = (uint32_t)(thread->stack_info.start +  in setup_stack_vars()
82 						    thread->stack_info.size);  in setup_stack_vars()
84 		thread->arch.u_stack_top = 0;  in setup_stack_vars()
85 		thread->arch.u_stack_base = 0;  in setup_stack_vars()
91 /* Get the initial stack frame pointer from the thread's stack buffer. */
92 static struct init_stack_frame *get_iframe(struct k_thread *thread,  in get_iframe()  argument
96 	if (is_user(thread)) {  in get_iframe()
97 		/* Initial stack frame for a user thread is slightly larger;  in get_iframe()
105 					      thread->arch.priv_stack_start +  in get_iframe()
116  * so these registers have pre-defined values when new thread begins
117  * execution. For example, setting up the thread pointer for thread local
118  * storage here so the thread starts with thread pointer already set up.
120 static inline void arch_setup_callee_saved_regs(struct k_thread *thread,  in arch_setup_callee_saved_regs()  argument
131 #error Compiler not configured for thread local storage  in arch_setup_callee_saved_regs()
134 	/* __ARC_TLS_REGNO__ is used for thread pointer for ARCv2 */  in arch_setup_callee_saved_regs()
135 	regs->TLSREG = thread->tls;  in arch_setup_callee_saved_regs()
137 	/* R30 is used for thread pointer for ARCv3 */  in arch_setup_callee_saved_regs()
138 	regs->r30 = thread->tls;  in arch_setup_callee_saved_regs()
148 void arch_new_thread(struct k_thread *thread, k_thread_stack_t *stack,  in arch_new_thread()  argument
154 	setup_stack_vars(thread);  in arch_new_thread()
157 	iframe = get_iframe(thread, stack_ptr);  in arch_new_thread()
167 	if (is_user(thread)) {  in arch_new_thread()
194 	/* Set required thread members */  in arch_new_thread()
195 	thread->switch_handle = thread;  in arch_new_thread()
196 	thread->arch.relinquish_cause = _CAUSE_COOP;  in arch_new_thread()
197 	thread->callee_saved.sp =  in arch_new_thread()
200 	arch_setup_callee_saved_regs(thread, thread->callee_saved.sp);  in arch_new_thread()
240 int arch_float_disable(struct k_thread *thread)  in arch_float_disable()  argument
248 	/* Disable all floating point capabilities for the thread */  in arch_float_disable()
249 	thread->base.user_options &= ~K_FP_REGS;  in arch_float_disable()
257 int arch_float_enable(struct k_thread *thread, unsigned int options)  in arch_float_enable()  argument
265 	/* Enable all floating point capabilities for the thread */  in arch_float_enable()
266 	thread->base.user_options |= K_FP_REGS;  in arch_float_enable()
301 void arc_dsp_disable(struct k_thread *thread, unsigned int options)  in arc_dsp_disable()  argument
306 	/* Disable DSP or AGU capabilities for the thread */  in arc_dsp_disable()
307 	thread->base.user_options &= ~(uint8_t)options;  in arc_dsp_disable()
312 void arc_dsp_enable(struct k_thread *thread, unsigned int options)  in arc_dsp_enable()  argument
317 	/* Enable dsp or agu capabilities for the thread */  in arc_dsp_enable()
318 	thread->base.user_options |= (uint8_t)options;  in arc_dsp_enable()