https://bugs.winehq.org/show_bug.cgi?id=49139
--- Comment #12 from Alex S iwtcex@gmail.com --- (In reply to Damjan Jovanovic from comment #11)
So if I am reading that correctly, OpenIndiana returns the relocbase in link_map.l_addr like GNU and NetBSD.
This is probably worth bringing to the FreeBSD bug tracker or some mailing list.
(In reply to Damjan Jovanovic from comment #9)
Now what "l_addr + d_un.d_ptr" does on FreeBSD, is add 30000 + 20150 = 50150, which is always wrong.
I actually have some code doing exactly that.
Looking at https://github.com/freebsd/freebsd/blob/d4300f6714811c0a28c0a701ae28952e5758...:
Obj_Entry * map_object(int fd, const char *path, const struct stat *sb) { ... base_vaddr = trunc_page(segs[0]->p_vaddr); ... base_addr = (caddr_t) base_vaddr; ... mapbase = mmap(base_addr, mapsize, PROT_NONE, base_flags, -1, 0); ... if (base_addr != NULL && mapbase != base_addr) { _rtld_error("%s: mmap returned wrong address: wanted %p, got %p", path, base_addr, mapbase); goto error1; } ... obj->mapbase = mapbase; obj->mapsize = mapsize obj->vaddrbase = base_vaddr; obj->relocbase = mapbase - base_vaddr; ... }
Thus, if p_vaddr == 0 --> mapbase == relocbase otherwise if p_vaddr != 0 --> relocbase == 0. Default vaddr value seems to be 0 with gcc (and 0x40 with clang). Well, at least that explains why I didn't bump into this issue.