scripts/sortextable: support objects with more than 64K sections.
Building with a large config and -ffunction-sections results in a large
number of sections and sortextable needs to be able to handle that.
Implement support for > 64K sections as modpost does.
Signed-off-by: Jamie Iles <jamie.iles@oracle.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/scripts/sortextable.c b/scripts/sortextable.c
index 7c2310c..5f7a8b6 100644
--- a/scripts/sortextable.c
+++ b/scripts/sortextable.c
@@ -152,6 +152,30 @@
typedef void (*table_sort_t)(char *, int);
+/*
+ * Move reserved section indices SHN_LORESERVE..SHN_HIRESERVE out of
+ * the way to -256..-1, to avoid conflicting with real section
+ * indices.
+ */
+#define SPECIAL(i) ((i) - (SHN_HIRESERVE + 1))
+
+static inline int is_shndx_special(unsigned int i)
+{
+ return i != SHN_XINDEX && i >= SHN_LORESERVE && i <= SHN_HIRESERVE;
+}
+
+/* Accessor for sym->st_shndx, hides ugliness of "64k sections" */
+static inline unsigned int get_secindex(unsigned int shndx,
+ unsigned int sym_offs,
+ const Elf32_Word *symtab_shndx_start)
+{
+ if (is_shndx_special(shndx))
+ return SPECIAL(shndx);
+ if (shndx != SHN_XINDEX)
+ return shndx;
+ return r(&symtab_shndx_start[sym_offs]);
+}
+
/* 32 bit and 64 bit are very similar */
#include "sortextable.h"
#define SORTEXTABLE_64