diff options
| -rw-r--r-- | src/include/memrange.h | 3 | ||||
| -rw-r--r-- | src/lib/memrange.c | 16 |
2 files changed, 19 insertions, 0 deletions
diff --git a/src/include/memrange.h b/src/include/memrange.h index 46a992adb5..7f42aa2b0b 100644 --- a/src/include/memrange.h +++ b/src/include/memrange.h @@ -98,6 +98,9 @@ void memranges_init(struct memranges *ranges, unsigned long mask, unsigned long match, unsigned long tag); +/* Clone a memrange. The new memrange has the same entries as the old one. */ +void memranges_clone(struct memranges *newranges, struct memranges *oldranges); + /* Remove and free all entries within the memranges structure. */ void memranges_teardown(struct memranges *ranges); diff --git a/src/lib/memrange.c b/src/lib/memrange.c index d3cda121f1..96d7524218 100644 --- a/src/lib/memrange.c +++ b/src/lib/memrange.c @@ -310,6 +310,22 @@ void memranges_init(struct memranges *ranges, memranges_add_resources(ranges, mask, match, tag); } +/* Clone a memrange. The new memrange has the same entries as the old one. */ +void memranges_clone(struct memranges *newranges, struct memranges *oldranges) +{ + struct range_entry *r, *cur; + struct range_entry **prev_ptr; + + memranges_init_empty(newranges, NULL, 0); + + prev_ptr = &newranges->entries; + memranges_each_entry(r, oldranges) { + cur = range_list_add(newranges, prev_ptr, r->begin, r->end, + r->tag); + prev_ptr = &cur->next; + } +} + void memranges_teardown(struct memranges *ranges) { while (ranges->entries != NULL) { |