https://sourceware.org/bugzilla/show_bug.cgi?id=26087
Bug ID: 26087
Summary: objdump --reloc does not work
Product: binutils
Version: 2.34
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: martin at dev2day dot de
Target Milestone: ---
Created attachment 12594
--> https://sourceware.org/bugzilla/attachment.cgi?id=12594&action=edit
file that I used to run objdump and readelf as described in the Description
field
Hello!
When running obdjump on the attached file I get the following (empty) output:
$ objdump --reloc relocoverwrite
relocoverwrite: file format elf64-x86-64
When I run readelf I get the following output:
$ readelf --relocs relocoverwrite
Relocation section '.rela.dyn' at offset 0x5c0 contains 11 entries:
Offset Info Type Sym. Value Sym. Name +
Addend
000000003de0 000000000008 R_X86_64_RELATIVE 1240
000000003de8 000000000008 R_X86_64_RELATIVE 11f0
000000004048 000000000008 R_X86_64_RELATIVE 4048
000000003fd0 000100000006 R_X86_64_GLOB_DAT 0000000000000000
_ITM_deregisterTMClone + 0
000000003fd8 000d00000006 R_X86_64_GLOB_DAT 0000000000000000
printf@GLIBC_2.2.5 + 0
000000003fe0 000500000006 R_X86_64_GLOB_DAT 0000000000000000
__libc_start_main@GLIBC_2.2.5 + 0
000000003fe8 000600000006 R_X86_64_GLOB_DAT 0000000000000000 __gmon_start__ +
0
000000003ff0 000900000006 R_X86_64_GLOB_DAT 0000000000000000
_ITM_registerTMCloneTa + 0
000000003ff8 000a00000006 R_X86_64_GLOB_DAT 0000000000000000
__cxa_finalize@GLIBC_2.2.5 + 0
000000004050 000b00000005 R_X86_64_COPY 0000000000004050
stdout@GLIBC_2.2.5 + 0
000000004060 000c00000005 R_X86_64_COPY 0000000000004060 stdin@GLIBC_2.2.5
+ 0
Relocation section '.rela.plt' at offset 0x6c8 contains 5 entries:
Offset Info Type Sym. Value Sym. Name +
Addend
000000004018 000200000007 R_X86_64_JUMP_SLO 0000000000000000 puts@GLIBC_2.2.5
+ 0
000000004020 000300000007 R_X86_64_JUMP_SLO 0000000000000000
__stack_chk_fail@GLIBC_2.4 + 0
000000004028 000400000007 R_X86_64_JUMP_SLO 0000000000000000 read@GLIBC_2.2.5
+ 0
000000004030 000700000007 R_X86_64_JUMP_SLO 0000000000000000
setvbuf@GLIBC_2.2.5 + 0
000000004038 000800000007 R_X86_64_JUMP_SLO 0000000000000000
__isoc99_scanf@GLIBC_2.7 + 0
It seems that objdump is not able to read the relocation entries.
I tested this on Ubuntu 20.04 and Fedora 32. Same behavior.
Best
Martin
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