modpost: support objects with more than 64k sections

This patch makes modpost able to process object files with more than
64k sections. Needed for huge kernel builds (allyesconfig, for example)
with -ffunction-sections. 64k sections handling is covered, for example,
by this document:

"IA-64 gABI Proposal 74: Section Indexes"
http://www.codesourcery.com/public/cxx-abi/abi/prop-74-sindex.html

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>

1 files changed, 3 insertions, 3 deletions

diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 220213e603db..33f436328f9a 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -839,16 +839,16 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
         char *zeros = NULL;
 
         /* We're looking for a section relative symbol */
-        if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
+        if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
                 return;
 
         /* Handle all-NULL symbols allocated into .bss */
-        if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) {
+        if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
                 zeros = calloc(1, sym->st_size);
                 symval = zeros;
         } else {
                 symval = (void *)info->hdr
-                        + info->sechdrs[sym->st_shndx].sh_offset
+                        + info->sechdrs[get_secindex(info, sym)].sh_offset
                         + sym->st_value;
         }