mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-21 09:00:10 +00:00
d78efd9f36
* elf/Makefile (tests): Add it. ($(objpfx)tst-tls-dlinfo): Depend on $(libdl). ($(objpfx)tst-tls-dlinfo.out): Depend on $(objpfx)tst-tlsmod2.so. * dlfcn/dlfcn.h (RTLD_DI_PROFILENAME, RTLD_DI_PROFILEOUT): New enum values, reserve unsupported requested names used on Solaris. (RTLD_DI_TLS_MODID, RTLD_DI_TLS_DATA): New enum values. (RTLD_DI_MAX): Likewise. * dlfcn/dlinfo.c (dlinfo_doit): Handle RTLD_DI_TLS_MODID and RTLD_DI_TLS_DATA. * elf/dl-tls.c (_dl_tls_get_addr_soft): New function. * sysdeps/generic/ldsodefs.h: Declare it. * elf/Versions (ld: GLIBC_PRIVATE): Add it. * elf/link.h (struct dl_phdr_info): New members dlpi_tls_modid, dlpi_tls_data. * elf/dl-iteratephdr.c (__dl_iterate_phdr): Fill them in. * include/link.h: Don't copy contents from elf/link.h. Instead, #include it while #define'ing around link_map. * elf/dl-debug.c (_dl_debug_initialize): Add a cast. Add bogus extern decl to verify link_map members. * elf/loadtest.c (MAPS): New macro, cast _r_debug._r_map. (OUT, main): Use it in place of _r_debug._r_map. * elf/unload.c: Likewise. * elf/unload2.c: Likewise. * elf/neededtest.c (check_loaded_objects): Likewise. * elf/neededtest2.c (check_loaded_objects): Likewise. * elf/neededtest3.c (check_loaded_objects): Likewise. * elf/neededtest4.c (check_loaded_objects): Likewise. * elf/circleload1.c (check_loaded_objects): Likewise.
79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/* Communicate dynamic linker state to the debugger at runtime.
|
|
Copyright (C) 1996, 1998,2000,2002,2004,2005,2006
|
|
Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <ldsodefs.h>
|
|
|
|
|
|
/* These are the members in the public `struct link_map' type.
|
|
Sanity check that the internal type and the public type match. */
|
|
#define VERIFY_MEMBER(name) \
|
|
(offsetof (struct link_map_public, name) == offsetof (struct link_map, name))
|
|
extern const int verify_link_map_members[(VERIFY_MEMBER (l_addr)
|
|
&& VERIFY_MEMBER (l_name)
|
|
&& VERIFY_MEMBER (l_ld)
|
|
&& VERIFY_MEMBER (l_next)
|
|
&& VERIFY_MEMBER (l_prev))
|
|
? 1 : -1];
|
|
|
|
/* This structure communicates dl state to the debugger. The debugger
|
|
normally finds it via the DT_DEBUG entry in the dynamic section, but in
|
|
a statically-linked program there is no dynamic section for the debugger
|
|
to examine and it looks for this particular symbol name. */
|
|
struct r_debug _r_debug;
|
|
|
|
|
|
/* Initialize _r_debug if it has not already been done. The argument is
|
|
the run-time load address of the dynamic linker, to be put in
|
|
_r_debug.r_ldbase. Returns the address of _r_debug. */
|
|
|
|
struct r_debug *
|
|
internal_function
|
|
_dl_debug_initialize (ElfW(Addr) ldbase, Lmid_t ns)
|
|
{
|
|
struct r_debug *r;
|
|
|
|
if (ns == LM_ID_BASE)
|
|
r = &_r_debug;
|
|
else
|
|
r = &GL(dl_ns)[ns]._ns_debug;
|
|
|
|
if (r->r_brk == 0 || ldbase != 0)
|
|
{
|
|
/* Tell the debugger where to find the map of loaded objects. */
|
|
r->r_version = 1 /* R_DEBUG_VERSION XXX */;
|
|
r->r_ldbase = ldbase ?: _r_debug.r_ldbase;
|
|
r->r_map = (void *) GL(dl_ns)[ns]._ns_loaded;
|
|
r->r_brk = (ElfW(Addr)) &_dl_debug_state;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
|
|
/* This function exists solely to have a breakpoint set on it by the
|
|
debugger. The debugger is supposed to find this function's address by
|
|
examining the r_brk member of struct r_debug, but GDB 4.15 in fact looks
|
|
for this particular symbol name in the PT_INTERP file. */
|
|
void
|
|
_dl_debug_state (void)
|
|
{
|
|
}
|
|
rtld_hidden_def (_dl_debug_state)
|