[Xen-devel] [livepatch-build-tools part2 v2 3/6] create-diff-object: Add is_special_section() helper function function

[Pawel Wieczorkiewicz <wipawel@xxxxxxxxx>]

This function determines, based on the given section name, if the
sections belongs to the special sections category.

Add more special sections to special_sections[] along with a new
undefined_group_size() helper function returning 0 (undefined).
New special sections are: .altinstr_replacement.

Signed-off-by: Pawel Wieczorkiewicz <wipawel@xxxxxxxxx>
Reviewed-by: Andra-Irina Paraschiv <andraprs@xxxxxxxxxx>
Reviewed-by: Bjoern Doebel <doebel@xxxxxxxxx>
Reviewed-by: Norbert Manthey <nmanthey@xxxxxxxxx>
---
v2:
* Applied suggestions from Ross:
  - const for the parameter
  - reusing special_sections array rather than duplicating it
    * moving the function from common.c to create-diff-object.c
    * strictly checking for full section names
---
 create-diff-object.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/create-diff-object.c b/create-diff-object.c
index 4699ba0..0df3fea 100644
--- a/create-diff-object.c
+++ b/create-diff-object.c
@@ -1045,6 +1045,18 @@ static struct special_section special_sections[] = {
        {},
 };
 
+static int is_special_section(const struct section *sec)
+{
+       struct special_section *special;
+
+       for (special = special_sections; special->name; special++) {
+               if (!strcmp(sec->name, special->name))
+                       return true;
+       }
+
+       return false;
+}
+
 static int should_keep_rela_group(struct section *sec, int start, int size)
 {
        struct rela *rela;
-- 
2.16.5




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