s390/kernel/ptrace.c

813 static int s390_regs_get(struct task_struct *target,
818 	if (target == current)
819 		save_access_regs(target->thread.acrs);
822 		membuf_store(&to, __peek_user(target, pos));
826 static int s390_regs_set(struct task_struct *target,
833 	if (target == current)
834 		save_access_regs(target->thread.acrs);
839 			rc = __poke_user(target, pos, *k++);
850 			rc = __poke_user(target, pos, word);
856 	if (rc == 0 && target == current)
857 		restore_access_regs(target->thread.acrs);
862 static int s390_fpregs_get(struct task_struct *target,
868 	if (target == current)
871 	fp_regs.fpc = target->thread.ufpu.fpc;
872 	fpregs_store(&fp_regs, &target->thread.ufpu);
877 static int s390_fpregs_set(struct task_struct *target,
885 	if (target == current)
887 	convert_vx_to_fp(fprs, target->thread.ufpu.vxrs);
889 		u32 ufpc[2] = { target->thread.ufpu.fpc, 0 };
896 		target->thread.ufpu.fpc = ufpc[0];
904 	convert_fp_to_vx(target->thread.ufpu.vxrs, fprs);
908 static int s390_last_break_get(struct task_struct *target,
912 	return membuf_store(&to, target->thread.last_break);
915 static int s390_last_break_set(struct task_struct *target,
923 static int s390_tdb_get(struct task_struct *target,
927 	struct pt_regs *regs = task_pt_regs(target);
932 	size = sizeof(target->thread.trap_tdb.data);
933 	return membuf_write(&to, target->thread.trap_tdb.data, size);
936 static int s390_tdb_set(struct task_struct *target,
944 static int s390_vxrs_low_get(struct task_struct *target,
953 	if (target == current)
956 		vxrs[i] = target->thread.ufpu.vxrs[i].low;
960 static int s390_vxrs_low_set(struct task_struct *target,
970 	if (target == current)
974 		vxrs[i] = target->thread.ufpu.vxrs[i].low;
979 			target->thread.ufpu.vxrs[i].low = vxrs[i];
984 static int s390_vxrs_high_get(struct task_struct *target,
990 	if (target == current)
992 	return membuf_write(&to, target->thread.ufpu.vxrs + __NUM_VXRS_LOW,
996 static int s390_vxrs_high_set(struct task_struct *target,
1005 	if (target == current)
1009 				target->thread.ufpu.vxrs + __NUM_VXRS_LOW, 0, -1);
1013 static int s390_system_call_get(struct task_struct *target,
1017 	return membuf_store(&to, target->thread.system_call);
1020 static int s390_system_call_set(struct task_struct *target,
1025 	unsigned int *data = &target->thread.system_call;
1030 static int s390_gs_cb_get(struct task_struct *target,
1034 	struct gs_cb *data = target->thread.gs_cb;
1040 	if (target == current)
1045 static int s390_gs_cb_set(struct task_struct *target,
1055 	if (!target->thread.gs_cb) {
1060 	if (!target->thread.gs_cb)
1062 	else if (target == current)
1065 		gs_cb = *target->thread.gs_cb;
1073 	if (!target->thread.gs_cb)
1074 		target->thread.gs_cb = data;
1075 	*target->thread.gs_cb = gs_cb;
1076 	if (target == current) {
1078 		restore_gs_cb(target->thread.gs_cb);
1084 static int s390_gs_bc_get(struct task_struct *target,
1088 	struct gs_cb *data = target->thread.gs_bc_cb;
1097 static int s390_gs_bc_set(struct task_struct *target,
1102 	struct gs_cb *data = target->thread.gs_bc_cb;
1110 		target->thread.gs_bc_cb = data;
1142 static int s390_runtime_instr_get(struct task_struct *target,
1146 	struct runtime_instr_cb *data = target->thread.ri_cb;
1156 static int s390_runtime_instr_set(struct task_struct *target,
1167 	if (!target->thread.ri_cb) {
1173 	if (target->thread.ri_cb) {
1174 		if (target == current)
1177 			ri_cb = *target->thread.ri_cb;
1197 	if (!target->thread.ri_cb)
1198 		target->thread.ri_cb = data;
1199 	*target->thread.ri_cb = ri_cb;
1200 	if (target == current)
1201 		load_runtime_instr_cb(target->thread.ri_cb);
1298 static int s390_compat_regs_get(struct task_struct *target,
1304 	if (target == current)
1305 		save_access_regs(target->thread.acrs);
1308 		membuf_store(&to, __peek_user_compat(target, n));
1312 static int s390_compat_regs_set(struct task_struct *target,
1319 	if (target == current)
1320 		save_access_regs(target->thread.acrs);
1325 			rc = __poke_user_compat(target, pos, *k++);
1336 			rc = __poke_user_compat(target, pos, word);
1342 	if (rc == 0 && target == current)
1343 		restore_access_regs(target->thread.acrs);
1348 static int s390_compat_regs_high_get(struct task_struct *target,
1355 	gprs_high = (compat_ulong_t *)task_pt_regs(target)->gprs;
1361 static int s390_compat_regs_high_set(struct task_struct *target,
1370 		&task_pt_regs(target)->gprs[pos / sizeof(compat_ulong_t)];
1394 static int s390_compat_last_break_get(struct task_struct *target,
1398 	compat_ulong_t last_break = target->thread.last_break;
1403 static int s390_compat_last_break_set(struct task_struct *target,