RTL arm load failed

[Peng Fan]

Hi,

qemu-system-arm -no-reboot -net none -nographic -M realview-pbx-a9 -m 256M
-kernel `find . -name dl01.exe` -s -S

*** BEGIN OF TEST libdl (RTL) Loader 1 ***
load: /dl-o1.o
rtl: unsupported section: 15: type=1879048195 flags=00
handle: 0x212b10 has unresolved externals

dl-o1.o can not be correctly loaded, because of unresolved symbols.
I do some debug using remote gdb and found it is the reloc entry references
local symbols named "LCx" saying "LC0", "LC1", "LC2".

Freenix at linux-jyl1:~/per/new/build-arm> arm-rtems4.11-readelf -s `find .
-name dl-o1.o`

Symbol table '.symtab' contains 22 entries:
   Num:    Value  Size Type    Bind   Vis      Ndx Name
     0: 00000000     0 NOTYPE  LOCAL  DEFAULT  UND
     1: 00000000     0 FILE    LOCAL  DEFAULT  ABS dl-o1.c
     2: 00000000     0 SECTION LOCAL  DEFAULT    1
     3: 00000000     0 SECTION LOCAL  DEFAULT    3
     4: 00000000     0 SECTION LOCAL  DEFAULT    4
     5: 00000000     0 SECTION LOCAL  DEFAULT    5
     6: 00000000     0 NOTYPE  LOCAL  DEFAULT    5 $d
*     7: 00000000     0 NOTYPE  LOCAL  DEFAULT    5 .LC0*
*     8: 00000020     0 NOTYPE  LOCAL  DEFAULT    5 .LC1*
*     9: 00000068     0 NOTYPE  LOCAL  DEFAULT    5 .LC2*
    10: 00000000     0 NOTYPE  LOCAL  DEFAULT    1 $t
    11: 00000000     0 SECTION LOCAL  DEFAULT    6
    12: 00000000     0 SECTION LOCAL  DEFAULT    8
    13: 00000000     0 SECTION LOCAL  DEFAULT    9
    14: 00000000     0 SECTION LOCAL  DEFAULT   11
    15: 00000000     0 SECTION LOCAL  DEFAULT   13
    16: 00000010     0 NOTYPE  LOCAL  DEFAULT   16 $d
    17: 00000000     0 SECTION LOCAL  DEFAULT   16
    18: 00000000     0 SECTION LOCAL  DEFAULT   14
    19: 00000000     0 SECTION LOCAL  DEFAULT   15
    20: 00000001    88 FUNC    GLOBAL DEFAULT    1 rtems_main
    21: 00000000     0 NOTYPE  GLOBAL DEFAULT  UND printf

The LCx symbols's type is NOTYPE and not included in the rtl symbol
table(local symbol may should not be included). In rtl-elf.c, line 387 see
following, the LCx symbols are not included, so fails. I prefer that if
unresolved symbols detected in rtl, detailed info should be print out, but
i found no debug msg about this.

384     /*

385      * Only keep the functions and global or weak symbols.

386      */

387     if ((ELF_ST_TYPE (symbol.st_info) == STT_OBJECT) ||

388         (ELF_ST_TYPE (symbol.st_info) == STT_FUNC))

I think this cause arm load failed. FYI, rap file are not included in the
dl test?

Regards,
Peng.
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