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Re: PATCH: Check invalid x32 relocations.
On Mon, Jan 17, 2011 at 1:49 AM, Jan Beulich <JBeulich@novell.com> wrote:
>>>> On 15.01.11 at 16:50, "H.J. Lu" <hongjiu.lu@intel.com> wrote:
>> --- a/bfd/elf64-x86-64.c
>> +++ b/bfd/elf64-x86-64.c
>> @@ -1179,6 +1179,39 @@ elf_x86_64_check_relocs (bfd *abfd, struct
>> bfd_link_info *info,
>> ? ? ? ? ? h = (struct elf_link_hash_entry *) h->root.u.i.link;
>> ? ? ? }
>>
>> + ? ? ?/* Check invalid x32 relocations. ?*/
>> + ? ? ?if (!ABI_64_P (abfd))
>> + ? ? switch (r_type)
>> + ? ? ? {
>> + ? ? ? default:
>> + ? ? ? ? break;
>> +
>> + ? ? ? case R_X86_64_64:
>
> While I buy that all the below ones are meaningless, excluding
> the one above seems questionable (and exposes one further
> reason why tying the ABI to object file format is bogus). An
> obvious use case is to initialize a 64-bit variable with a constant
> defined in another object.
>
Show me how to initialize a 64-bit variable with a constant
defined in another object in x32 format in assembly code.
I will check it as a testcase.
Thanks.
--
H.J.