len0rd/dtc
1
0
Fork 0
mirror of https://github.com/dgibson/dtc.git synced 2025-10-13 16:27:39 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Disallow re-use of the same label within a dts file

Browse source 
Currently, nothing will stop you from re-using the same label string
multiple times in a dts, e.g.:
	/ {
		samelabel: prop1 = "foo";
		samelabel: prop2 = "bar";
	};

or
	/ {
		samelabel: prop1 = "foo";
		samelabel: subnode {
		};
	};

When using node references by label, this could lead to confusing
results (with no warning), and in -Oasm mode will result in output
which the assembler will complain about (since it too will have
duplicate labels).

This patch, therefore, adds code to checks.c to give errors if you
attempt to re-use the same label.  It treats all labels (node,
property, and value) as residing in the same namespace, since the
assembler will treat them so for -Oasm mode.

Testcases for the new code are also added.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson 2010-02-23 19:56:41 +11:00 • committed by Jon Loeliger
parent 15ad6d862e
commit 329055dbbc
11 changed files with 175 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

4
dtc.h
View file

@ -171,6 +171,10 @@ void add_child(struct node *parent, struct node *child);
const char *get_unitname(struct node *node);
struct property *get_property(struct node *node, const char *propname);
cell_t propval_cell(struct property *prop);
struct property *get_property_by_label(struct node *tree, const char *label,
struct node **node);
struct marker *get_marker_label(struct node *tree, const char *label,
struct node **node, struct property **prop);
struct node *get_subnode(struct node *node, const char *nodename);
struct node *get_node_by_path(struct node *tree, const char *path);
struct node *get_node_by_label(struct node *tree, const char *label);