------- Additional Comments From amodra at bigpond dot net dot au 2008-04-22 16:10 ------- I'll take a look at ppc. The obvious change doesn't help much as enabling ppc_elf_tls_optimize for pie results in us hitting the bfd_error_bad_value at elf32-ppc.c:6577 when we try to make a dynamic reloc for the edited LD->LE tls reloc. That is, if you use an old enough compiler.
gcc 4.2 and later reschedule the tls sequences and ppc_elf_tls_optimize gives up. We really need some way of tying together relocs on arg setup for __tls_get_addr and the call to __tls_get_addr itself. One way that occurred to me is to emit a call to the tls variable involved instead of __tls_get_addr, and of course restore the real call in the linker. eg. instead of addi 3,30,[EMAIL PROTECTED]@tlsld bl __tls_get_addr emit addi 3,30,[EMAIL PROTECTED]@tlsld bl foo This would allow the linker to edit the sequence as the tls symbol foo on both relocs ties things together. A real call to a tls symbol can't happen, so all bl some_tls_symbol means bl __tls_get_addr. Unfortunately this is an ABI change. Alternatively, disable scheduling of tls sequences involving __tls_get_addr in gcc. -- http://sourceware.org/bugzilla/show_bug.cgi?id=6443 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-binutils
