[Bug ld/6844] Segmentation Fault using cross architecture ld command

[jmorrison at printronix dot com]

------- Additional Comments From jmorrison at printronix dot com  2008-08-20 
18:33 -------
Reply to #10:

Item 1.  I'll play around so more with the linker script.

Item 2.  Here is the information you asked for (i hope):

I've edited out my mistakes...
For brevity I change "/home/morr_jo/work/ToolChain/cross"  to "***"
At point of fault, htab is 0x00.  
Going UP the call chain to the caller, I got the values below.  I stopped there.


Program received signal SIGSEGV, Segmentation fault.
0x0806fe40 in bfd_putb32 (data=1317011489, p=0xb66f694) at
***/src/binutils-2.18.50/bfd/libbfd.c:742
742       addr[0] = (data >> 24) & 0xff;

(gdb) bt
#0  0x0806fe40 in bfd_putb32 (data=1317011489, p=0xb66f694) at
***/src/binutils-2.18.50/bfd/libbfd.c:742
#1  0x08085cce in ppc_elf_finish_dynamic_sections (output_bfd=0x892fbe0,
info=0x8110e60) at ***/src/binutils-2.18.50/bfd/elf32-ppc.c:7739
#2  0x080a28f1 in bfd_elf_final_link (abfd=0x892fbe0, info=0x8110e60) at
***/src/binutils-2.18.50/bfd/elflink.c:10801
#3  0x0805ba4d in ldwrite () at ***/src/binutils-2.18.50/ld/ldwrite.c:567
#4  0x08059843 in main (argc=50, argv=0xbff83044) at
***/src/binutils-2.18.50/ld/ldmain.c:462

(gdb) print htab
$1 = 0

(gdb) print htab->got->contents
Attempt to extract a component of a value that is not a structure pointer.

(gdb) up
#1  0x08085cce in ppc_elf_finish_dynamic_sections (output_bfd=0x892fbe0,
info=0x8110e60) at ***/src/binutils-2.18.50/bfd/elf32-ppc.c:7739
7739            bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);

(gdb) print htab
$2 = (struct ppc_elf_link_hash_table *) 0x8931df0

(gdb) print htab->got
$3 = (asection *) 0x893a7e4

(gdb) x/50x htab->got
0x893a7e4:      0x08103048      0x00000018      0x00000008      0x0893a88c
0x893a7f4:      0x0893a73c      0x00104113      0x00000102      0x00000000
0x893a804:      0x00000000      0x00000010      0x00000000      0x000cb0b0
0x893a814:      0x08931730      0x00000002      0x00000000      0x00000000
0x893a824:      0x00000000      0x00000000      0x00000000      0x00000000
0x893a834:      0x00000000      0x00000000      0x00000000      0x00000000
0x893a844:      0x0aaba718      0x00000000      0x00000000      0x00000000
0x893a854:      0x00000000      0x00000000      0x00000000      0x00000000
0x893a864:      0x08939148      0x00000000      0x089380a0      0x089391f4
0x893a874:      0x0893a870      0x08943644      0x09ec8d5c      0x00000000
0x893a884:      0x08103043      0x056935ec      0x08103043      0x00000019
0x893a894:      0x00000009      0x0893a934      0x0893a7e4      0x0010c10b
0x893a8a4:      0x00000100      0x00000000

(gdb) print htab->got->contents
$4 = (unsigned char *) 0xaaba718 ""

(gdb) x/50x htab->got->contents
0xaaba718:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba728:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba738:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba748:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba758:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba768:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba778:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba788:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba798:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba7a8:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba7b8:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba7c8:      0x00000000      0x00000000      0x00000000      0x00000000
0xaaba7d8:      0x00000000      0x00000000

(gdb) print/x htab->elf.hgot->root.u.def.value
$7 = 0xbb4f80

(gdb) print/x  htab->got->size
$8 = 0x10


(gdb) up
#2  0x080a28f1 in bfd_elf_final_link (abfd=0x892fbe0, info=0x8110e60) at
***/src/binutils-2.18.50/bfd/elflink.c:10801

10801         if (! (*bed->elf_backend_finish_dynamic_sections) (abfd, info))

(gdb) x/30x htab->got->contents
Attempt to extract a component of a value that is not a structure pointer.

(gdb) print/x  htab->got->size
Attempt to extract a component of a value that is not a structure pointer.

(gdb) print/x htab->elf.hgot->root.u.def.value
Attempt to extract a component of a value that is not a structure pointer.

(gdb) bt
#0  0x0806fe40 in bfd_putb32 (data=1317011489, p=0xb66f694) at
***/src/binutils-2.18.50/bfd/libbfd.c:742
#1  0x08085cce in ppc_elf_finish_dynamic_sections (output_bfd=0x892fbe0,
info=0x8110e60) at ***/src/binutils-2.18.50/bfd/elf32-ppc.c:7739
#2  0x080a28f1 in bfd_elf_final_link (abfd=0x892fbe0, info=0x8110e60) at
***/src/binutils-2.18.50/bfd/elflink.c:10801
#3  0x0805ba4d in ldwrite () at ***/src/binutils-2.18.50/ld/ldwrite.c:567
#4  0x08059843 in main (argc=50, argv=0xbff83044) at
***/src/binutils-2.18.50/ld/ldmain.c:462
(gdb) 

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=6844

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