129 read_tsk_long(struct task_struct *child,  in read_tsk_long()  argument
134 	copied = access_process_vm(child, addr, res, sizeof(*res), 0);  in read_tsk_long()
140 read_tsk_short(struct task_struct *child,  in read_tsk_short()  argument
145 	copied = access_process_vm(child, addr, res, sizeof(*res), 0);  in read_tsk_short()
151 write_tsk_short(struct task_struct *child,  in write_tsk_short()  argument
156 	copied = access_process_vm(child, addr, &val, sizeof(val), 1);  in write_tsk_short()
162 write_tsk_long(struct task_struct *child,  in write_tsk_long()  argument
167 	copied = access_process_vm(child, addr, &val, sizeof(val), 1);  in write_tsk_long()
172 void user_enable_single_step(struct task_struct *child)  in user_enable_single_step()  argument
179 	struct pt_regs *regs = task_pt_regs(child);  in user_enable_single_step()
180 	child->thread.single_step = 1;  in user_enable_single_step()
181 	child->thread.ss_nextcnt = 1;  in user_enable_single_step()
184 	read_tsk_long(child, epc, &epc_insn);  in user_enable_single_step()
191 			child->thread.ss_nextcnt = 2;  in user_enable_single_step()
198 			child->thread.ss_nextcnt = 2;  in user_enable_single_step()
211 			child->thread.ss_nextcnt = 2;  in user_enable_single_step()
220 			child->thread.ss_nextcnt = 2;  in user_enable_single_step()
228 	if (child->thread.ss_nextcnt == 1) {  in user_enable_single_step()
229 		read_tsk_long(child, epc, &epc_insn);  in user_enable_single_step()
232 			write_tsk_short(child, epc, SINGLESTEP16_INSN);  in user_enable_single_step()
235 			write_tsk_long(child, epc, SINGLESTEP32_INSN);  in user_enable_single_step()
240 			child->thread.insn1_type = 0;  in user_enable_single_step()
241 			child->thread.addr1 = epc;  in user_enable_single_step()
243 			child->thread.insn1 = (short)epc_insn;  in user_enable_single_step()
245 			child->thread.insn1_type = 1;  in user_enable_single_step()
246 			child->thread.addr1 = epc;  in user_enable_single_step()
247 			child->thread.insn1 = epc_insn;  in user_enable_single_step()
250 		/* branch! have two target child->thread.ss_nextcnt=2 */  in user_enable_single_step()
251 		read_tsk_long(child, epc, &epc_insn);  in user_enable_single_step()
252 		read_tsk_long(child, far_epc, &far_epc_insn);  in user_enable_single_step()
254 			write_tsk_short(child, epc, SINGLESTEP16_INSN);  in user_enable_single_step()
257 			write_tsk_long(child, epc, SINGLESTEP32_INSN);  in user_enable_single_step()
262 			child->thread.insn1_type = 0;  in user_enable_single_step()
263 			child->thread.addr1 = epc;  in user_enable_single_step()
265 			child->thread.insn1 = (short)epc_insn;  in user_enable_single_step()
267 			child->thread.insn1_type = 1;  in user_enable_single_step()
268 			child->thread.addr1 = epc;  in user_enable_single_step()
269 			child->thread.insn1 = epc_insn;  in user_enable_single_step()
273 			write_tsk_short(child, far_epc, SINGLESTEP16_INSN);  in user_enable_single_step()
276 			write_tsk_long(child, far_epc, SINGLESTEP32_INSN);  in user_enable_single_step()
281 			child->thread.insn2_type = 0;  in user_enable_single_step()
282 			child->thread.addr2 = far_epc;  in user_enable_single_step()
284 			child->thread.insn2 = (short)far_epc_insn;  in user_enable_single_step()
286 			child->thread.insn2_type = 1;  in user_enable_single_step()
287 			child->thread.addr2 = far_epc;  in user_enable_single_step()
288 			child->thread.insn2 = far_epc_insn;  in user_enable_single_step()
293 void user_disable_single_step(struct task_struct *child)  in user_disable_single_step()  argument
295 	if (child->thread.insn1_type == 0)  in user_disable_single_step()
296 		write_tsk_short(child, child->thread.addr1,  in user_disable_single_step()
297 				child->thread.insn1);  in user_disable_single_step()
299 	if (child->thread.insn1_type == 1)  in user_disable_single_step()
300 		write_tsk_long(child, child->thread.addr1,  in user_disable_single_step()
301 				child->thread.insn1);  in user_disable_single_step()
303 	if (child->thread.ss_nextcnt == 2) {	/* branch */  in user_disable_single_step()
304 		if (child->thread.insn1_type == 0)  in user_disable_single_step()
305 			write_tsk_short(child, child->thread.addr1,  in user_disable_single_step()
306 					child->thread.insn1);  in user_disable_single_step()
307 		if (child->thread.insn1_type == 1)  in user_disable_single_step()
308 			write_tsk_long(child, child->thread.addr1,  in user_disable_single_step()
309 					child->thread.insn1);  in user_disable_single_step()
310 		if (child->thread.insn2_type == 0)  in user_disable_single_step()
311 			write_tsk_short(child, child->thread.addr2,  in user_disable_single_step()
312 					child->thread.insn2);  in user_disable_single_step()
313 		if (child->thread.insn2_type == 1)  in user_disable_single_step()
314 			write_tsk_long(child, child->thread.addr2,  in user_disable_single_step()
315 					child->thread.insn2);  in user_disable_single_step()
318 	child->thread.single_step = 0;  in user_disable_single_step()
319 	child->thread.ss_nextcnt = 0;  in user_disable_single_step()
322 void ptrace_disable(struct task_struct *child)  in ptrace_disable()  argument
324 	user_disable_single_step(child);  in ptrace_disable()
328 arch_ptrace(struct task_struct *child, long request,  in arch_ptrace()  argument
336 		ret = copy_regset_to_user(child, &user_score_native_view,  in arch_ptrace()
343 		ret = copy_regset_from_user(child, &user_score_native_view,  in arch_ptrace()
350 		ret = ptrace_request(child, request, addr, data);  in arch_ptrace()