------- Additional Comments From ro at TechFak dot Uni-Bielefeld dot DE
2008-11-14 15:09 -------
Subject: Re: 64-bit libstdc++.so fails to link on Solaris 11/SPARC: could not
read symbols: Bad value
Hi Nick,
> As a matter of interest if you change this to:
>
> if ((! ABI_64_P (abfd) && ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32)
> || (ABI_64_P (abfd) && ELF32_R_TYPE (rel->r_info) == R_SPARC_WPLT30))
>
> does the patch then work ? (I agree that the 32-bit case does seem
> rather mysterious).
unfortunately not: this time ld SEGVs:
/vol/gcc/obj/binutils-2.19.50-g/ld/ld-new: warning: section `.bss' type changed
to PROGBITS
/vol/gcc/obj/binutils-2.19.50-g/ld/ld-new: BFD (GNU Binutils) 2.19.50.20081111
assertion fail /vol/gnu/src/binutils/binutils-dist/bfd/elfxx-sparc.c:2765
Segmentation Fault
#0 0x00091024 in _bfd_sparc_elf_relocate_section (output_bfd=0x1c5f10,
info=0x19da08, input_bfd=0x1dc5a0, input_section=0x1f6ab0, contents=0x1082948
"[EMAIL PROTECTED]", relocs=0x1fdca0, local_syms=0x753920,
local_sections=0xfa3c98) at
/vol/gnu/src/binutils/binutils-dist/bfd/elfxx-sparc.c:2768
#1 0x000d4b9c in elf_link_input_bfd (finfo=0xffbfe880, input_bfd=0x1dc5a0) at
/vol/gnu/src/binutils/binutils-dist/bfd/elflink.c:9327
#2 0x000d7f84 in bfd_elf_final_link (abfd=0x1c5f10, info=0x19da08) at
/vol/gnu/src/binutils/binutils-dist/bfd/elflink.c:10452
#3 0x00040958 in ldwrite () at
/vol/gnu/src/binutils/binutils-dist/ld/ldwrite.c:567
#4 0x0003cec0 in main (argc=114, argv=0xffbfea7c) at
/vol/gnu/src/binutils/binutils-dist/ld/ldmain.c:462
At l. 2768 of elfxx-sparc.c (_bfd_sparc_elf_relocate_section), h is NULL,
so
if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
{
/* We didn't make a PLT entry for this symbol. This
happens when statically linking PIC code, or when
using -Bsymbolic. */
break;
}
crashes when dereferencing it.
If I adapt the check immediately before
@@ -2751,19 +2751,12 @@
/* Relocation is to the entry for this symbol in the
procedure linkage table. */
- if (! ABI_64_P (output_bfd))
- {
- /* The Solaris native assembler will generate a WPLT30 reloc
- for a local symbol if you assemble a call from one
- section to another when using -K pic. We treat it as
- WDISP30. */
- if (h == NULL)
- break;
- }
- else
- {
- BFD_ASSERT (h != NULL);
- }
+ /* The Solaris native assembler will generate a WPLT30 reloc
+ for a local symbol if you assemble a call from one
+ section to another when using -K pic. We treat it as
+ WDISP30. */
+ if (h == NULL)
+ break;
if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
{
I still get the "section `.bss' type changed to PROGBITS" warning, but at
least a libstdc++.so is produced.
I'm now continuting the GCC bootstrap and will run the testsuite see if
this seems to work.
Rainer
--
http://sourceware.org/bugzilla/show_bug.cgi?id=7027
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