arch/arm/arch_thread.cpp

47 arm_push_iframe(struct iframe_stack *stack, struct iframe *frame)
50 	stack->frames[stack->index++] = frame;
199 	iframe frame = {};
200 	frame.r0 = (uint32)args1;
201 	frame.r1 = (uint32)args2;
202 	frame.usr_sp = stackTop;
203 	frame.usr_lr = ((addr_t*)commPageAddress)[COMMPAGE_ENTRY_ARM_THREAD_EXIT]
205 	frame.pc = entry;
208 	arch_return_to_userland(&frame);
218 	struct iframe* frame = thread->arch_info.userFrame;
219 	if (frame == NULL) {
224 	return frame->usr_sp >= thread->signal_stack_base
225 		&& frame->usr_sp < thread->signal_stack_base
231 get_signal_stack(Thread* thread, struct iframe* frame,
236 			&& (frame->usr_sp < thread->signal_stack_base
237 			|| frame->usr_sp >= thread->signal_stack_base + thread->signal_stack_size)) {
242 	return (uint8*)ROUNDDOWN(frame->usr_sp - spaceNeeded, 16);
250 	iframe* frame = thread->arch_info.userFrame;
251 	if (frame == NULL) {
257 	signalFrameData->context.uc_mcontext.r0   = frame->r0;
258 	signalFrameData->context.uc_mcontext.r1   = frame->r1;
259 	signalFrameData->context.uc_mcontext.r2   = frame->r2;
260 	signalFrameData->context.uc_mcontext.r3   = frame->r3;
261 	signalFrameData->context.uc_mcontext.r4   = frame->r4;
262 	signalFrameData->context.uc_mcontext.r5   = frame->r5;
263 	signalFrameData->context.uc_mcontext.r6   = frame->r6;
264 	signalFrameData->context.uc_mcontext.r7   = frame->r7;
265 	signalFrameData->context.uc_mcontext.r8   = frame->r8;
266 	signalFrameData->context.uc_mcontext.r9   = frame->r9;
267 	signalFrameData->context.uc_mcontext.r10  = frame->r10;
268 	signalFrameData->context.uc_mcontext.r11  = frame->r11;
269 	signalFrameData->context.uc_mcontext.r12  = frame->r12;
270 	signalFrameData->context.uc_mcontext.r13  = frame->usr_sp;
271 	signalFrameData->context.uc_mcontext.r14  = frame->usr_lr;
272 	signalFrameData->context.uc_mcontext.r15  = frame->pc;
273 	signalFrameData->context.uc_mcontext.cpsr = frame->spsr;
278 	signal_get_user_stack(frame->usr_sp, &signalFrameData->context.uc_stack);
284 	uint8* userStack = get_signal_stack(thread, frame, sa,
287 	// copy the signal frame data onto the stack
293 	// prepare the user stack frame for a function call to the signal handler wrapper function
301 	frame->usr_lr = frame->pc;
302 	frame->usr_sp = (addr_t)userStack;
303 	frame->pc = signalHandlerAddr;
304 	frame->r0 = frame->usr_sp;
313 	iframe* frame = thread_get_current_thread()->arch_info.userFrame;
314 	if (frame == NULL) {
322 	frame->r0     = signalFrameData->context.uc_mcontext.r0;
323 	frame->r1     = signalFrameData->context.uc_mcontext.r1;
324 	frame->r2     = signalFrameData->context.uc_mcontext.r2;
325 	frame->r3     = signalFrameData->context.uc_mcontext.r3;
326 	frame->r4     = signalFrameData->context.uc_mcontext.r4;
327 	frame->r5     = signalFrameData->context.uc_mcontext.r5;
328 	frame->r6     = signalFrameData->context.uc_mcontext.r6;
329 	frame->r7     = signalFrameData->context.uc_mcontext.r7;
330 	frame->r8     = signalFrameData->context.uc_mcontext.r8;
331 	frame->r9     = signalFrameData->context.uc_mcontext.r9;
332 	frame->r10    = signalFrameData->context.uc_mcontext.r10;
333 	frame->r11    = signalFrameData->context.uc_mcontext.r11;
334 	frame->r12    = signalFrameData->context.uc_mcontext.r12;
335 	frame->usr_sp = signalFrameData->context.uc_mcontext.r13;
336 	frame->usr_lr = signalFrameData->context.uc_mcontext.r14;
337 	frame->pc     = signalFrameData->context.uc_mcontext.r15;
338 	frame->spsr   = signalFrameData->context.uc_mcontext.cpsr;
342 	return frame->r0;
346 /**	Saves everything needed to restore the frame in the child fork in the
353 	struct iframe* frame = thread_get_current_thread()->arch_info.userFrame;
354 	if (frame == NULL) {
358 	arg->frame = *frame;
359 	arg->frame.r0 = 0; // fork return value
363 /** Restores the frame from a forked team as specified by the provided
374 	arch_return_to_userland(&arg->frame);