arch/riscv64/arch_thread.cpp

124 	iframe frame;
125 	memset(&frame, 0, sizeof(frame));
131 	frame.status = status.val;
132 	frame.epc = entry;
133 	frame.a0 = (addr_t)arg1;
134 	frame.a1 = (addr_t)arg2;
135 	frame.ra = threadExitAddr;
136 	frame.sp = thread->user_stack_base + thread->user_stack_size;
137 	frame.tp = thread->user_local_storage;
139 	arch_load_user_iframe(stackHeader, &frame);
149 	struct iframe* frame = thread->arch_info.userFrame;
150 	if (frame == NULL) {
155 	return frame->sp >= thread->signal_stack_base
156 		&& frame->sp < thread->signal_stack_base
162 get_signal_stack(Thread* thread, struct iframe* frame,
169 			frame->sp < thread->signal_stack_base ||
170 			frame->sp >= thread->signal_stack_base + thread->signal_stack_size
177 	return (uint8*)ROUNDDOWN(frame->sp - spaceNeeded, 16);
186 	iframe* frame = thread->arch_info.userFrame;
189 	signalFrameData->context.uc_mcontext.x[ 0] = frame->ra;
190 	signalFrameData->context.uc_mcontext.x[ 1] = frame->sp;
191 	signalFrameData->context.uc_mcontext.x[ 2] = frame->gp;
192 	signalFrameData->context.uc_mcontext.x[ 3] = frame->tp;
193 	signalFrameData->context.uc_mcontext.x[ 4] = frame->t0;
194 	signalFrameData->context.uc_mcontext.x[ 5] = frame->t1;
195 	signalFrameData->context.uc_mcontext.x[ 6] = frame->t2;
196 	signalFrameData->context.uc_mcontext.x[ 7] = frame->fp;
197 	signalFrameData->context.uc_mcontext.x[ 8] = frame->s1;
198 	signalFrameData->context.uc_mcontext.x[ 9] = frame->a0;
199 	signalFrameData->context.uc_mcontext.x[10] = frame->a1;
200 	signalFrameData->context.uc_mcontext.x[11] = frame->a2;
201 	signalFrameData->context.uc_mcontext.x[12] = frame->a3;
202 	signalFrameData->context.uc_mcontext.x[13] = frame->a4;
203 	signalFrameData->context.uc_mcontext.x[14] = frame->a5;
204 	signalFrameData->context.uc_mcontext.x[15] = frame->a6;
205 	signalFrameData->context.uc_mcontext.x[16] = frame->a7;
206 	signalFrameData->context.uc_mcontext.x[17] = frame->s2;
207 	signalFrameData->context.uc_mcontext.x[18] = frame->s3;
208 	signalFrameData->context.uc_mcontext.x[19] = frame->s4;
209 	signalFrameData->context.uc_mcontext.x[20] = frame->s5;
210 	signalFrameData->context.uc_mcontext.x[21] = frame->s6;
211 	signalFrameData->context.uc_mcontext.x[22] = frame->s7;
212 	signalFrameData->context.uc_mcontext.x[23] = frame->s8;
213 	signalFrameData->context.uc_mcontext.x[24] = frame->s9;
214 	signalFrameData->context.uc_mcontext.x[25] = frame->s10;
215 	signalFrameData->context.uc_mcontext.x[26] = frame->s11;
216 	signalFrameData->context.uc_mcontext.x[27] = frame->t3;
217 	signalFrameData->context.uc_mcontext.x[28] = frame->t4;
218 	signalFrameData->context.uc_mcontext.x[29] = frame->t5;
219 	signalFrameData->context.uc_mcontext.x[30] = frame->t6;
220 	signalFrameData->context.uc_mcontext.pc = frame->epc;
225 	signal_get_user_stack(frame->sp, &signalFrameData->context.uc_stack);
238 	uint8* userStack = get_signal_stack(thread, frame, sa,
254 	frame->ra = frame->epc;
255 	frame->sp = (addr_t)userStack;
256 	frame->epc = signalHandlerAddr;
257 	frame->a0 = frame->sp;
269 	iframe* frame = thread_get_current_thread()->arch_info.userFrame;
274 	frame->ra  = signalFrameData->context.uc_mcontext.x[ 0];
275 	frame->sp  = signalFrameData->context.uc_mcontext.x[ 1];
276 	frame->gp  = signalFrameData->context.uc_mcontext.x[ 2];
277 	frame->tp  = signalFrameData->context.uc_mcontext.x[ 3];
278 	frame->t0  = signalFrameData->context.uc_mcontext.x[ 4];
279 	frame->t1  = signalFrameData->context.uc_mcontext.x[ 5];
280 	frame->t2  = signalFrameData->context.uc_mcontext.x[ 6];
281 	frame->fp  = signalFrameData->context.uc_mcontext.x[ 7];
282 	frame->s1  = signalFrameData->context.uc_mcontext.x[ 8];
283 	frame->a0  = signalFrameData->context.uc_mcontext.x[ 9];
284 	frame->a1  = signalFrameData->context.uc_mcontext.x[10];
285 	frame->a2  = signalFrameData->context.uc_mcontext.x[11];
286 	frame->a3  = signalFrameData->context.uc_mcontext.x[12];
287 	frame->a4  = signalFrameData->context.uc_mcontext.x[13];
288 	frame->a5  = signalFrameData->context.uc_mcontext.x[14];
289 	frame->a6  = signalFrameData->context.uc_mcontext.x[15];
290 	frame->a7  = signalFrameData->context.uc_mcontext.x[16];
291 	frame->s2  = signalFrameData->context.uc_mcontext.x[17];
292 	frame->s3  = signalFrameData->context.uc_mcontext.x[18];
293 	frame->s4  = signalFrameData->context.uc_mcontext.x[19];
294 	frame->s5  = signalFrameData->context.uc_mcontext.x[20];
295 	frame->s6  = signalFrameData->context.uc_mcontext.x[21];
296 	frame->s7  = signalFrameData->context.uc_mcontext.x[22];
297 	frame->s8  = signalFrameData->context.uc_mcontext.x[23];
298 	frame->s9  = signalFrameData->context.uc_mcontext.x[24];
299 	frame->s10 = signalFrameData->context.uc_mcontext.x[25];
300 	frame->s11 = signalFrameData->context.uc_mcontext.x[26];
301 	frame->t3  = signalFrameData->context.uc_mcontext.x[27];
302 	frame->t4  = signalFrameData->context.uc_mcontext.x[28];
303 	frame->t5  = signalFrameData->context.uc_mcontext.x[29];
304 	frame->t6  = signalFrameData->context.uc_mcontext.x[30];
305 	frame->epc = signalFrameData->context.uc_mcontext.pc;
308 	return frame->a0;
312 /**	Saves everything needed to restore the frame in the child fork in the
326 	memcpy(&arg->frame, thread_get_current_thread()->arch_info.userFrame,
328 	arg->frame.a0 = 0; // fork return value
332 /** Restores the frame from a forked team as specified by the provided
347 	//dprintf("  user PC: "); WritePC(arg->frame.epc); dprintf("\n");
356 	arg->frame.status = status.val;
357 	arch_load_user_iframe(stackHeader, &arg->frame);