Hello. I've got a question about the purpose of R_386_RELATIVE relocation
Here's a part of disassemble of a library, built as follows:
g++ -fPIC -c test.cpp -o test.o
g++ -shared -Wl,-q -o libtest.so test.o
At 0x1bcc there is a R_386_RELATIVE relocation, and the data in this address
is 0x1c08, which is an address of __dso_handle. As far as I understand, it's
not the job of R_386_RELATIVE to fix the value, so there should have been a
linker relocation on 0x1bcc, pointing to 0x1c08. Am I right? (There is no
other relocation on 0x1bcc besides R_386_RELATIVE)
Thanks in advance
Disassembly of section .got:
00001bcc <.got>:
1bcc: 08 1c 00 or %bl,(%eax,%eax,1)
1bcc: R_386_RELATIVE *ABS*
...
1bd0: R_386_GLOB_DAT __cxa_finalize
1bd4: R_386_GLOB_DAT _Jv_RegisterClasses
1bd8: R_386_GLOB_DAT __gmon_start__
Disassembly of section .got.plt:
00001bdc <.got.plt>:
1bdc: f4 hlt
1bdd: 1a 00 sbb (%eax),%al
...
1be7: 00 42 06 add %al,0x6(%edx)
1be8: R_386_JUMP_SLOT _ZNSt8ios_base4InitC1Ev
1bea: 00 00 add %al,(%eax)
1bec: 52 push %edx
1bec: R_386_JUMP_SLOT __cxa_atexit
1bed: 06 push %es
1bee: 00 00 add %al,(%eax)
1bf0: 62 06 bound %eax,(%esi)
1bf0: R_386_JUMP_SLOT _ZNKSsixEj
1bf2: 00 00 add %al,(%eax)
1bf4: 72 06 jb 1bfc <.got.plt+0x20>
1bf4: R_386_JUMP_SLOT _ZNKSs4sizeEv
1bf6: 00 00 add %al,(%eax)
1bf8: 82 (bad)
1bf8: R_386_JUMP_SLOT printf
1bf9: 06 push %es
1bfa: 00 00 add %al,(%eax)
1bfc: 92 xchg %eax,%edx
1bfc: R_386_JUMP_SLOT _ZSt3minIjERKT_S2_S2_
1bfd: 06 push %es
1bfe: 00 00 add %al,(%eax)
1c00: a2 06 00 00 b2 mov %al,0xb2000006
1c00: R_386_JUMP_SLOT __cxa_finalize
1c04: R_386_JUMP_SLOT _ZNSt8ios_base4InitD1Ev
1c05: 06 push %es
...
Disassembly of section .data:
00001c08 <__dso_handle>:
1c08: 08 1c 00 or %bl,(%eax,%eax,1)
1c08: R_386_RELATIVE *ABS*
...
--
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