* x32 psABI draft version 0.3
@ 2011-02-21 18:08 H.J. Lu
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From: H.J. Lu @ 2011-02-21 18:08 UTC (permalink / raw)
To: Jan Beulich
Cc: GCC Development, x32-abi, Jakub Jelinek, Binutils, GNU C Library,
Jan Hubicka, H. Peter Anvin
On Mon, Feb 21, 2011 at 12:04 AM, Jan Beulich <JBeulich@novell.com> wrote:
>>>> On 18.02.11 at 18:53, "H.J. Lu" <hjl.tools@gmail.com> wrote:
>> How about only allowing REL relocations in executables and DSOes?
>
> That'd be at least part of it, but I'd still prefer not forbidding them
> altogether, but also not requiring an implementation to support
> them (just to repeat it - in a long abandoned new OS of ours we
> had ignored the forbidding, and allowed REL in relocatable objects
> [which were the only objects used there, the loadable ones
> distinguished from "normal" ones by the presence of some OS-
> specific data structures], with the static linker picking the type
> depending on the module's needs).
>
I updated x32 psABI draft to version 0.3 with
---
The AMD64 LP64 ABI architecture uses only Elf64_Rela relocation entries
with explicit addends. The r_addend member serves as the relocation
addend.
The AMD64 X32 ABI architecture uses only Elf32_Rela relocation entries
in relocatable files. Relocations contained within executable files or
shared objects
may use either Elf32_Rela relocation or Elf32_Rel relocation.
---
which is similar to ia64 psABI where rel relocations are only allowed within
executable files or shared objects.
H.J.
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