prelink --reloc-only versus ld -Ttext-segment
Tijl Coosemans
tijl at freebsd.org
Thu Feb 21 05:03:26 CST 2013
Hi,
I'm looking into supporting winegcc -Wl,--image-base on FreeBSD. On Linux
prelink --reloc-only is used for that but rather than porting prelink it
seems easier to pass -Wl,-Ttext-segment to the compiler instead. Is there
anything obviously wrong with that?
Winedbg shows kernel32 and ntdll are loaded at their respective addresses:
ELF 7b800000-7ba41000 Dwarf kernel32<elf>
\-PE 7b820000-7ba41000 \ kernel32
ELF 7bc00000-7bccd000 Dwarf ntdll<elf>
\-PE 7bc10000-7bccd000 \ ntdll
The output of readelf -l ntdll.dll.so looks good too:
Elf file type is DYN (Shared object file)
Entry point 0x7bc20200
There are 5 program headers, starting at offset 52
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
LOAD 0x000000 0x7bc00000 0x7bc00000 0xafce4 0xafce4 R E 0x1000
LOAD 0x0afce4 0x7bcb0ce4 0x7bcb0ce4 0x0941c 0x1c2b4 RW 0x1000
DYNAMIC 0x0b0000 0x7bcb1000 0x7bcb1000 0x000e8 0x000e8 RW 0x4
GNU_EH_FRAME 0x0960bc 0x7bc960bc 0x7bc960bc 0x04144 0x04144 R 0x4
GNU_STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RW 0x4
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