linker throws error no .eh_frame_hdr will be created

kamlesh kumar kamleshbhalui@gmail.com
Thu Jun 3 08:32:46 GMT 2021


Hi Devs,

When I give executable as input in linker like below it throws error,
but resulted binary almost contain similar section.
$ ./build-binutils-2.36/ld/ld-new -r test.exe -o bar
./build-binutils-2.36/ld/ld-new: error in test.exe(.eh_frame); no
.eh_frame_hdr table will be created
$ readelfppcspe -S test.exe
There are 17 section headers, starting at offset 0x60d758:

Section Headers:
  [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf Al
  [ 0]                   NULL            00000000 000000 000000 00      0   0  0
  [ 1] .text             PROGBITS        00100000 002000 4f2e0b 00 WAX
 0   0 8192
  [ 2] .eh_frame_hdr     PROGBITS        005f2e10 4f4e10 001a0c 00   A  0   0  4
  [ 3] .eh_frame         PROGBITS        005f481c 4f681c 009a18 00   A  0   0  4
  [ 4] .gcc_except_table PROGBITS        005fe240 500240 003000 00   A  0   0  4
  [ 5] .wrs_build_vars   PROGBITS        00601240 503240 000178 00  Ax  0   0  1
  [ 6] .data             PROGBITS        00602000 504000 057bd0 00  WA
 0   0 4096
  [ 7] .tdata            PROGBITS        00659bd0 55bbd0 000005 00 WAT  0   0  4
  [ 8] .tbss             NOBITS          00659be0 55bbd5 000810 00 WAT  0   0  4
  [ 9] .sdata            PROGBITS        00659c00 55bc00 001f10 00  WA
 0   0 128
  [10] .sbss             NOBITS          0065c000 55db10 000ef8 00  WA  0   0 64
  [11] .bss              NOBITS          0065d000 55db10 058b8c 00  WA
 0   0 512
  [12] .PPC.EMB.apuinfo  NOTE            00000000 55db10 000024 00      0   0  1
  [13] .gnu.attributes   GNU_ATTRIBUTES  00000000 55db34 000012 00      0   0  1
  [14] .symtab           SYMTAB          00000000 55db48 057510 10
15 10256  4
  [15] .strtab           STRTAB          00000000 5b5058 05865c 00      0   0  1
  [16] .shstrtab         STRTAB          00000000 60d6b4 0000a1 00      0   0  1
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
  L (link order), O (extra OS processing required), G (group), T (TLS),
  C (compressed), x (unknown), o (OS specific), E (exclude),
  v (VLE), p (processor specific)
$ readelfppcspe -S bar
There are 17 section headers, starting at offset 0x60d848:

Section Headers:
  [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf Al
  [ 0]                   NULL            00000000 000000 000000 00      0   0  0
  [ 1] .text             PROGBITS        00000000 002000 4f2e0b 00 WAX
 0   0 8192
  [ 2] .wrs_build_vars   PROGBITS        00000000 4f4e0b 000178 00   A  0   0  1
  [ 3] .eh_frame_hdr     PROGBITS        00000000 4f4f84 001a0c 00   A  0   0  4
  [ 4] .eh_frame         PROGBITS        00000000 4f6990 009a18 00   A  0   0  4
  [ 5] .gcc_except_table PROGBITS        00000000 5003a8 003000 00   A  0   0  4
  [ 6] .tdata            PROGBITS        00000000 5033a8 000005 00 WAT  0   0  4
  [ 7] .tbss             NOBITS          00000000 5033b0 000810 00 WAT  0   0  4
  [ 8] .data             PROGBITS        00000000 504000 057bd0 00  WA
 0   0 4096
  [ 9] .sdata            PROGBITS        00000000 55bc00 001f10 00  WA
 0   0 128
  [10] .sbss             NOBITS          00000000 55db40 000ef8 00  WA  0   0 64
  [11] .bss              NOBITS          00000000 55dc00 058b8c 00  WA
 0   0 512
  [12] .PPC.EMB.apuinfo  NOTE            00000000 55dc00 000024 00      0   0  1
  [13] .gnu.attributes   GNU_ATTRIBUTES  00000000 55dc24 000012 00      0   0  1
  [14] .symtab           SYMTAB          00000000 55dc38 057510 10
15 10256  4
  [15] .strtab           STRTAB          00000000 5b5148 05865c 00      0   0  1
  [16] .shstrtab         STRTAB          00000000 60d7a4 0000a1 00      0   0  1
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
  L (link order), O (extra OS processing required), G (group), T (TLS),
  C (compressed), x (unknown), o (OS specific), E (exclude),
  v (VLE), p (processor specific)

we do not get any error in the 2.23 linker.
I would like to know  Is this bug in the linker? or  Is behaving correctly?

./kamlesh


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