132  * does not yet catch signals sent when the child dies.
355 static int putreg(struct task_struct *child,  in putreg()  argument
365 		return set_segment_reg(child, offset, value);  in putreg()
368 		return set_flags(child, value);  in putreg()
374 		x86_fsbase_write_task(child, value);  in putreg()
379 		x86_gsbase_write_task(child, value);  in putreg()
384 	*pt_regs_access(task_pt_regs(child), offset) = value;  in putreg()
699 void ptrace_disable(struct task_struct *child)  in ptrace_disable()  argument
701 	user_disable_single_step(child);  in ptrace_disable()
711 long arch_ptrace(struct task_struct *child, long request,  in arch_ptrace()  argument
736 			tmp = getreg(child, addr);  in arch_ptrace()
740 			tmp = ptrace_get_debugreg(child, addr / sizeof(data));  in arch_ptrace()
752 			ret = putreg(child, addr, data);  in arch_ptrace()
756 			ret = ptrace_set_debugreg(child,  in arch_ptrace()
761 	case PTRACE_GETREGS:	/* Get all gp regs from the child. */  in arch_ptrace()
762 		return copy_regset_to_user(child,  in arch_ptrace()
768 	case PTRACE_SETREGS:	/* Set all gp regs in the child. */  in arch_ptrace()
769 		return copy_regset_from_user(child,  in arch_ptrace()
775 	case PTRACE_GETFPREGS:	/* Get the child FPU state. */  in arch_ptrace()
776 		return copy_regset_to_user(child,  in arch_ptrace()
782 	case PTRACE_SETFPREGS:	/* Set the child FPU state. */  in arch_ptrace()
783 		return copy_regset_from_user(child,  in arch_ptrace()
790 	case PTRACE_GETFPXREGS:	/* Get the child extended FPU state. */  in arch_ptrace()
791 		return copy_regset_to_user(child, &user_x86_32_view,  in arch_ptrace()
796 	case PTRACE_SETFPXREGS:	/* Set the child extended FPU state. */  in arch_ptrace()
797 		return copy_regset_from_user(child, &user_x86_32_view,  in arch_ptrace()
807 		ret = do_get_thread_area(child, addr,  in arch_ptrace()
814 		ret = do_set_thread_area(child, addr,  in arch_ptrace()
824 		ret = do_arch_prctl_64(child, data, addr);  in arch_ptrace()
829 		ret = ptrace_request(child, request, addr, data);  in arch_ptrace()
849 		return set_segment_reg(child,				\
854 static int putreg32(struct task_struct *child, unsigned regno, u32 value)  in putreg32()  argument
856 	struct pt_regs *regs = task_pt_regs(child);  in putreg32()
873 		ret = set_segment_reg(child,  in putreg32()
877 			child->thread.fsbase =  in putreg32()
878 				x86_fsgsbase_read_task(child, value);  in putreg32()
882 		ret = set_segment_reg(child,  in putreg32()
886 			child->thread.gsbase =  in putreg32()
887 				x86_fsgsbase_read_task(child, value);  in putreg32()
914 		if (syscall_get_nr(child, regs) != -1)  in putreg32()
915 			child->thread_info.status |= TS_I386_REGS_POKED;  in putreg32()
919 		return set_flags(child, value);  in putreg32()
924 		return ptrace_set_debugreg(child, regno / 4, value);  in putreg32()
948 		*val = get_segment_reg(child,				\
952 static int getreg32(struct task_struct *child, unsigned regno, u32 *val)  in getreg32()  argument
954 	struct pt_regs *regs = task_pt_regs(child);  in getreg32()
977 		*val = get_flags(child);  in getreg32()
983 		*val = ptrace_get_debugreg(child, regno / 4);  in getreg32()
1045 static long ia32_arch_ptrace(struct task_struct *child, compat_long_t request,  in ia32_arch_ptrace()  argument
1056 		ret = getreg32(child, addr, &val);  in ia32_arch_ptrace()
1062 		ret = putreg32(child, addr, data);  in ia32_arch_ptrace()
1065 	case PTRACE_GETREGS:	/* Get all gp regs from the child. */  in ia32_arch_ptrace()
1066 		return copy_regset_to_user(child, &user_x86_32_view,  in ia32_arch_ptrace()
1071 	case PTRACE_SETREGS:	/* Set all gp regs in the child. */  in ia32_arch_ptrace()
1072 		return copy_regset_from_user(child, &user_x86_32_view,  in ia32_arch_ptrace()
1077 	case PTRACE_GETFPREGS:	/* Get the child FPU state. */  in ia32_arch_ptrace()
1078 		return copy_regset_to_user(child, &user_x86_32_view,  in ia32_arch_ptrace()
1083 	case PTRACE_SETFPREGS:	/* Set the child FPU state. */  in ia32_arch_ptrace()
1085 			child, &user_x86_32_view, REGSET_FP,  in ia32_arch_ptrace()
1088 	case PTRACE_GETFPXREGS:	/* Get the child extended FPU state. */  in ia32_arch_ptrace()
1089 		return copy_regset_to_user(child, &user_x86_32_view,  in ia32_arch_ptrace()
1094 	case PTRACE_SETFPXREGS:	/* Set the child extended FPU state. */  in ia32_arch_ptrace()
1095 		return copy_regset_from_user(child, &user_x86_32_view,  in ia32_arch_ptrace()
1102 		return arch_ptrace(child, request, addr, data);  in ia32_arch_ptrace()
1105 		return compat_ptrace_request(child, request, addr, data);  in ia32_arch_ptrace()
1113 static long x32_arch_ptrace(struct task_struct *child,  in x32_arch_ptrace()  argument
1135 			tmp = getreg(child, addr);  in x32_arch_ptrace()
1139 			tmp = ptrace_get_debugreg(child, addr / sizeof(data));  in x32_arch_ptrace()
1155 			ret = putreg(child, addr, data);  in x32_arch_ptrace()
1159 			ret = ptrace_set_debugreg(child,  in x32_arch_ptrace()
1164 	case PTRACE_GETREGS:	/* Get all gp regs from the child. */  in x32_arch_ptrace()
1165 		return copy_regset_to_user(child,  in x32_arch_ptrace()
1171 	case PTRACE_SETREGS:	/* Set all gp regs in the child. */  in x32_arch_ptrace()
1172 		return copy_regset_from_user(child,  in x32_arch_ptrace()
1178 	case PTRACE_GETFPREGS:	/* Get the child FPU state. */  in x32_arch_ptrace()
1179 		return copy_regset_to_user(child,  in x32_arch_ptrace()
1185 	case PTRACE_SETFPREGS:	/* Set the child FPU state. */  in x32_arch_ptrace()
1186 		return copy_regset_from_user(child,  in x32_arch_ptrace()
1193 		return compat_ptrace_request(child, request, addr, data);  in x32_arch_ptrace()
1201 long compat_arch_ptrace(struct task_struct *child, compat_long_t request,  in compat_arch_ptrace()  argument
1206 		return x32_arch_ptrace(child, request, caddr, cdata);  in compat_arch_ptrace()
1209 	return ia32_arch_ptrace(child, request, caddr, cdata);  in compat_arch_ptrace()