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powerpc: modules: comment about de-dotifying symbols when using the ELFv2 ABI. 

ELFv2 doesn't use function descriptors, so we don't expect symbols to
start with ".".  But because depmod and modpost strip ".", and we have
the special symbol ".TOC.", we still need to do it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2014-03-18 20:11:28 +10:30 committed by Anton Blanchard
parent 0906584a0a
commit 5b12c5c694
1 changed files with 2 additions and 1 deletions
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3
arch/powerpc/kernel/module_64.c
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@ -172,6 +172,7 @@ static unsigned long get_stubs_size(const Elf64_Ehdr *hdr,
return relocs * sizeof(struct ppc64_stub_entry);
}
/* Still needed for ELFv2, for .TOC. */
static void dedotify_versions(struct modversion_info *vers,
unsigned long size)
{
@ -182,7 +183,7 @@ static void dedotify_versions(struct modversion_info *vers,
memmove(vers->name, vers->name+1, strlen(vers->name));
}
/* Undefined symbols which refer to .funcname, hack to funcname */
/* Undefined symbols which refer to .funcname, hack to funcname (or .TOC.) */
static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
{
unsigned int i;