yasm fails to generate position independent code. nasm on the same input works.
In particular, "wrt ..gotpc" produces different offsets.
# yasm -f elf pic.asm -o pic.o
# gcc pic.o -o pic
# objdump -d pic | perl -ne 'print if /<main>/ .. /ret/'
08048340 <main>:
8048340: 53 push ebx
8048341: e8 00 00 00 00 call 8048346 <main+0x6>
8048346: 5b pop ebx
8048347: 81 c3 a9 11 00 00 add ebx,0x11a9
804834d: 8b 83 18 ef ff ff mov eax,[ebx-0x10e8]
8048353: 8b 00 mov eax,[eax]
8048355: 5b pop ebx
8048356: c3 ret
# ./pic
Segmentation fault
# nasm -f elf pic.asm -o pic.o
# gcc pic.o -o pic
# objdump -d pic | perl -ne 'print if /<main>/ .. /ret/'
08048340 <main>:
8048340: 53 push ebx
8048341: e8 00 00 00 00 call 8048346 <main.getgot>
08048346 <main.getgot>:
8048346: 5b pop ebx
8048347: 81 c3 b2 11 00 00 add ebx,0x11b2
804834d: 8b 83 18 ef ff ff mov eax,[ebx-0x10e8]
8048353: 8b 00 mov eax,[eax]
8048355: 5b pop ebx
8048356: c3 ret
# ./pic
#
