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[Bug libc/19574] glibc should support building static PIE binaries
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 02 Oct 2017 22:31:53 +0000
- Subject: [Bug libc/19574] glibc should support building static PIE binaries
- Auto-submitted: auto-generated
- References: <bug-19574-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=19574
--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, hjl/pie/static has been created
at 54a6ea8dca4a8007925509e5062dad58ad372503 (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=54a6ea8dca4a8007925509e5062dad58ad372503
commit 54a6ea8dca4a8007925509e5062dad58ad372503
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Sep 27 16:47:29 2017 -0700
Add --enable-static-pie to build-many-glibcs.py
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=06c90ff31c731f5e9c3d24e760781f18e087c3d6
commit 06c90ff31c731f5e9c3d24e760781f18e087c3d6
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Sep 29 01:07:53 2017 -0700
tile: Check SHARED instead PIC for SYSCALL_ERROR_NAME
For static PIE code, PIC is defined and SHARED is undefined. We
should check SHARED instead PIC for SYSCALL_ERROR_NAME.
* sysdeps/unix/sysv/linux/tile/sysdep.h (SYSCALL_ERROR_NAME):
Check SHARED instead PIC.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f53e358df7532a9f8e8537914f82ceae020e9c49
commit f53e358df7532a9f8e8537914f82ceae020e9c49
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 16:13:54 2017 -0700
sparc: Check PIC instead of SHARED in start.S
Since start.o may be compiled as PIC, we should check PIC instead of
SHARED.
* sysdeps/sparc/sparc32/start.S (_start): Check PIC instead of
SHARED.
* sysdeps/sparc/sparc64/start.S (_start): Likewise.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3242c259949f625970d4cb39260958386eae3a6b
commit 3242c259949f625970d4cb39260958386eae3a6b
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 16:13:22 2017 -0700
microblaze: Check PIC instead of SHARED in start.S
Since start.o may be compiled as PIC, we should check PIC instead of
SHARED.
* sysdeps/microblaze/start.S (_start): Check PIC instead of SHARED.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2596f9a1ef039f01093ab12e722a80ba82d49a34
commit 2596f9a1ef039f01093ab12e722a80ba82d49a34
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 16:12:52 2017 -0700
m68k: Check PIC instead of SHARED in start.S
Since start.o may be compiled as PIC, we should check PIC instead of
SHARED.
* sysdeps/m68k/start.S (_start): Check PIC instead of SHARED.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5f6f3d1b97329b69e7e791d5f9966f5a112aa1d3
commit 5f6f3d1b97329b69e7e791d5f9966f5a112aa1d3
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 16:12:28 2017 -0700
hppa: Check PIC instead of SHARED in start.S
Since start.o may be compiled as PIC, we should check PIC instead of
SHARED.
* sysdeps/hppa/start.S (_start): Check PIC instead of SHARED.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=53518afc4d43e3d99f7db5399d1588f757128857
commit 53518afc4d43e3d99f7db5399d1588f757128857
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 16:11:02 2017 -0700
aarch64: Check PIC instead of SHARED in start.S
Since start.o may be compiled as PIC, we should check PIC instead of
SHARED.
* sysdeps/aarch64/start.S (_start): Check PIC instead of SHARED.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2fcb20f193be0c02a71e52959059cb9df7dfc3a9
commit 2fcb20f193be0c02a71e52959059cb9df7dfc3a9
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:59:00 2017 -0700
tile: Update elf_machine_load_address for static PIE
tile uses _DYNAMIC to compute load address, which works with static PIE.
We just need to return 0 if _DYNAMIC is undefined for static executable.
* sysdeps/tile/dl-machine.h (elf_machine_load_address): Return 0
if _DYNAMIC is undefined for static executable.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d4febf8a4f48083bf5cd20ac46f636e24e5497d9
commit d4febf8a4f48083bf5cd20ac46f636e24e5497d9
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:57:09 2017 -0700
sparc: Update elf_machine_load_address for static PIE
sparc uses a local label to compute load address, which works with static
PIE. We just need to return 0 if _DYNAMIC is undefined for static
executable.
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_dynamic): Return
0 if _DYNAMIC is undefined for static executable.
* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_dynamic):
Likewise.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=33c40ab8b1bf1f47b53f8908163e3a2eaa577c35
commit 33c40ab8b1bf1f47b53f8908163e3a2eaa577c35
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:55:18 2017 -0700
sh: Update elf_machine_load_address for static PIE
When --enable-static-pie is used to configure glibc, we need to use
_dl_relocate_static_pie to compute load address in static PIE.
* sysdeps/sh/dl-machine.h (elf_machine_load_address): Use
_dl_relocate_static_pie instead of _dl_start to compute load
address in static PIE. Return 0 if _DYNAMIC is undefined for
static executable.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=adbdf586e7de0bfc248481249eaaa44e16445466
commit adbdf586e7de0bfc248481249eaaa44e16445466
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:53:06 2017 -0700
s390: Update elf_machine_load_address for static PIE
When --enable-static-pie is used to configure glibc, we need to use
_dl_relocate_static_pie to compute load address in static PIE.
* sysdeps/s390/s390-32/dl-machine.h (elf_machine_dynamic): Use
_dl_relocate_static_pie instead of _dl_start to compute load
address in static PIE. Return 0 if _DYNAMIC is undefined for
static executable.
* sysdeps/s390/s390-64/dl-machine.h (elf_machine_dynamic):
Likewise.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=97457b7992475cd80cef4d709cd10df205703562
commit 97457b7992475cd80cef4d709cd10df205703562
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:51:41 2017 -0700
powerpc32: Update elf_machine_load_address for static PIE
powerpc32 uses _DYNAMIC to compute load address, which works with static
PIE. We just need to return 0 if _DYNAMIC is undefined for static
executable.
* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_load_address):
Return 0 if _DYNAMIC is undefined for static executable.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=7538a7874c483fcf075779152cbca7d51ff1277c
commit 7538a7874c483fcf075779152cbca7d51ff1277c
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:50:10 2017 -0700
nios2: Update elf_machine_load_address for static PIE
nios2 uses a local label to compute load address, which works with static
PIE. We just need to return 0 if _DYNAMIC is undefined for static
executable.
* sysdeps/nios2/dl-machine.h (elf_machine_dynamic): Return 0 if
_DYNAMIC is undefined for static executable.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ba237e4b9c3456617dc0d9fd2f43b0ca2726f8c4
commit ba237e4b9c3456617dc0d9fd2f43b0ca2726f8c4
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:47:20 2017 -0700
microblaze: Update elf_machine_load_address for static PIE
microblaze uses _DYNAMIC to compute load address, which works with static
PIE. We just need to return 0 if _DYNAMIC is undefined for static
executable.
* sysdeps/microblaze/dl-machine.h (elf_machine_load_address):
Return 0 if _DYNAMIC is undefined for static executable.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b47111243c4581e1171474672a4c26e2e200b41c
commit b47111243c4581e1171474672a4c26e2e200b41c
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:46:26 2017 -0700
m68k: Update elf_machine_load_address for static PIE
When --enable-static-pie is used to configure glibc, we need to use
_dl_relocate_static_pie to compute load address in static PIE.
* sysdeps/m68k/dl-machine.h (elf_machine_load_address): Use
_dl_relocate_static_pie instead of _dl_start to compute load
address in static PIE. Return 0 if _DYNAMIC is undefined for
static executable.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0f44bbea33bae18ce17acee9f09538803c099fad
commit 0f44bbea33bae18ce17acee9f09538803c099fad
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:44:46 2017 -0700
ia64: Update elf_machine_load_address for static PIE
ia64 uses a local label to compute load address, which works with static
PIE. We just need to return 0 if _DYNAMIC is undefined for static
executable.
* sysdeps/ia64/dl-machine.h (elf_machine_dynamic): Return 0 if
_DYNAMIC is undefined for static executable.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3994c3090a0026ff9c430c6dc0284133df017b67
commit 3994c3090a0026ff9c430c6dc0284133df017b67
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:42:18 2017 -0700
hppa: Update elf_machine_load_address for static PIE
hppa uses _DYNAMIC to compute load address, which works with static PIE.
We just need to return 0 if _DYNAMIC is undefined for static executable.
* sysdeps/hppa/dl-machine.h (elf_machine_load_address): Return 0
if _DYNAMIC is undefined for static executable.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ec465b0fc04cf2e4020b8ee898b63ba8350b095c
commit ec465b0fc04cf2e4020b8ee898b63ba8350b095c
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Sep 28 14:36:33 2017 -0700
aarch64: Update elf_machine_load_address for static PIE
When --enable-static-pie is used to configure glibc, we need to use
_dl_relocate_static_pie to compute load address in static PIE.
* sysdeps/aarch64/dl-machine.h (elf_machine_load_address): Use
_dl_relocate_static_pie instead of _dl_start to compute load
address in static PIE. Return 0 if _DYNAMIC is undefined for
static executable.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9783b57f4852d8d7f79ff1f4b2d5240f5fa4d6e6
commit 9783b57f4852d8d7f79ff1f4b2d5240f5fa4d6e6
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Aug 22 15:37:10 2017 -0700
Don't use hidden visibility in libc.a with PIE on i386
On i386, when multi-arch is enabled, all external functions must be
called via PIC PLT in PIE, which requires setting up EBX register,
since they may be IFUNC functions.
* config.h.in (NO_HIDDEN_EXTERN_FUNC_IN_PIE): New.
* include/libc-symbols.h (__hidden_proto_hiddenattr): Add check
for PIC and NO_HIDDEN_EXTERN_FUNC_IN_PIE.
* sysdeps/i386/configure.ac (NO_HIDDEN_EXTERN_FUNC_IN_PIE): New
AC_DEFINE if multi-arch is enabled.
* sysdeps/i386/configure: Regenerated.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e4b0d965b31762dee691e663df6e4db339a150dd
commit e4b0d965b31762dee691e663df6e4db339a150dd
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Jul 17 08:17:32 2017 -0700
Add --enable-static-pie configure option to build static PIE [BZ #19574]
Dynamic linker, ld.so, is a standalone program which can be loaded at
any address. This patch adds a configure option, --enable-static-pie,
to embed the part of ld.so in static executable to create static position
independent executable (static PIE). A static PIE is similar to static
executable, but can be loaded at any address without help from a dynamic
linker. When --enable-static-pie is used to configure glibc, libc.a is
built as PIE and all static executables, including tests, are built as
static PIE. The resulting libc.a can be used together with GCC 8 or
above to build static PIE with the compiler option, -static-pie. But
GCC 8 isn't required to build glibc with --enable-static-pie. When an
older GCC is used to build glibc with --enable-static-pie, proper input
files are passed to linker to create static executables as static PIE,
together with "-z text" to prevent dynamic relocations in read-only
segments, which are allowed in static PIE.
Static PIE can work on all architectures which support PIE, provided
1. Target must support accessing of local functions without dynamic
relocations, which is needed in start.S to call __libc_start_main with
function addresses of __libc_csu_init, __libc_csu_fini and main. All
functions in statice PIE are local functions.
2. start.S is updated to check PIC instead SHARED for PIC code path and
avoid dynamic relocation, when PIC is defined and SHARED isn't defined,
to support static PIE. Patches are submitted for aarch64, arm, hppa,
m68k, microblaze and sparc.
3. All assembly codes are updated check PIC instead SHARED for PIC code
path to avoid dynamic relocations in read-only sections.
4. All assembly codes are updated check SHARED instead PIC for static
symbol name. A patch is submitted for tile.
5. elf_machine_load_address in dl-machine.h are updated to support static
PIE. Patches are submitted for aarch64, arm, hppa, ia64, m68k, microblaze,
mips, nios2, powerpc, s390, sh, sparc and tile.
NB: When glibc is built with GCC defaulted to PIE, libc.a is compiled
with -fPIE, regardless if --enable-static-pie is used to configure glibc.
When glibc is configured with --enable-static-pie, libc.a is compiled
with -fPIE, regardless wether GCC defaults to PIE or not. The same libc.a
can be used to build both static executable and static PIE. There is no
need for separate PIE copy of libc.a.
Linker requirements to build glibc with --enable-static-pie:
1. Linker supports --no-dynamic-linker to remove PT_INTERP segment from
static PIE.
2. Linker can create working static PIE. The x86-64 linker needs the
fix for
https://sourceware.org/bugzilla/show_bug.cgi?id=21782
Binutils 2.29 or above are OK for x86-64. But linker status for other
targets need to be verified.
Tested on i686 and x86-64.
Build results of build-many-glibcs.py with --enable-static-pie with all
patches for static PIE applied are
PASS: glibcs-aarch64_be-linux-gnu build
PASS: glibcs-aarch64-linux-gnu build
PASS: glibcs-armeb-linux-gnueabi build
PASS: glibcs-armeb-linux-gnueabi-be8 build
PASS: glibcs-armeb-linux-gnueabihf build
PASS: glibcs-armeb-linux-gnueabihf-be8 build
PASS: glibcs-arm-linux-gnueabi build
PASS: glibcs-arm-linux-gnueabihf build
PASS: glibcs-hppa-linux-gnu build
PASS: glibcs-i486-linux-gnu build
PASS: glibcs-i586-linux-gnu build
PASS: glibcs-i686-linux-gnu build
PASS: glibcs-i686-linux-gnu-disable-multi-arch build
PASS: glibcs-m68k-linux-gnu build
PASS: glibcs-microblazeel-linux-gnu build
PASS: glibcs-microblaze-linux-gnu build
PASS: glibcs-mips64el-linux-gnu-n64 build
PASS: glibcs-mips64el-linux-gnu-n64-nan2008 build
PASS: glibcs-mips64el-linux-gnu-n64-nan2008-soft build
PASS: glibcs-mips64el-linux-gnu-n64-soft build
PASS: glibcs-mips64-linux-gnu-n64 build
PASS: glibcs-mips64-linux-gnu-n64-nan2008 build
PASS: glibcs-mips64-linux-gnu-n64-nan2008-soft build
PASS: glibcs-mips64-linux-gnu-n64-soft build
PASS: glibcs-nios2-linux-gnu build
PASS: glibcs-powerpc64le-linux-gnu build
PASS: glibcs-powerpc64-linux-gnu build
PASS: glibcs-s390x-linux-gnu build
PASS: glibcs-x86_64-linux-gnu build
PASS: glibcs-x86_64-linux-gnu-disable-multi-arch build
PASS: glibcs-x86_64-linux-gnu-x32 build
FAIL: glibcs-alpha-linux-gnu build
elf/sln is failed to link due to:
assertion fail bfd/elf64-alpha.c:4125
This is caused by linker bug and/or non-PIC code in PIE libc.a.
FAIL: glibcs-ia64-linux-gnu build
elf/sln is failed to link due to:
libc.a(sched_yield.o): non-pic code with imm relocation against dynamic
symbol `_dl_sysinfo'
This is caused by non-PIC version of DO_CALL macro in ia64 sysdep.h. PIE
libc.a should use PIC version of DO_CALL, except during startup in static
PIE. An ia64 startup.h, similar to i386 startup.h, is needed to handle
this.
FAIL: glibcs-mips64el-linux-gnu-n32 build
FAIL: glibcs-mips64el-linux-gnu-n32-nan2008 build
FAIL: glibcs-mips64el-linux-gnu-n32-nan2008-soft build
FAIL: glibcs-mips64el-linux-gnu-n32-soft build
FAIL: glibcs-mips64-linux-gnu-n32 build
FAIL: glibcs-mips64-linux-gnu-n32-nan2008 build
FAIL: glibcs-mips64-linux-gnu-n32-nan2008-soft build
FAIL: glibcs-mips64-linux-gnu-n32-soft build
FAIL: glibcs-mipsel-linux-gnu build
FAIL: glibcs-mipsel-linux-gnu-nan2008 build
FAIL: glibcs-mipsel-linux-gnu-nan2008-soft build
FAIL: glibcs-mipsel-linux-gnu-soft build
FAIL: glibcs-mips-linux-gnu build
FAIL: glibcs-mips-linux-gnu-nan2008 build
FAIL: glibcs-mips-linux-gnu-nan2008-soft build
FAIL: glibcs-mips-linux-gnu-soft build
elf/sln is failed to link due to:
crt1.o: relocation R_MIPS_HI16 against `_gp' can not be used when making a
shared object; recompile with -fPIC
This is caused by linker bug and/or non-PIC code in crt1.o.
FAIL: glibcs-powerpc-linux-gnu build
FAIL: glibcs-powerpc-linux-gnu-soft build
FAIL: glibcs-powerpc-linux-gnuspe build
FAIL: glibcs-powerpc-linux-gnuspe-e500v1 build
elf/sln is failed to link due to:
ld: read-only segment has dynamic relocations.
This is caused by linker bug and/or non-PIC code in PIE libc.a.
FAIL: glibcs-powerpc-linux-gnu-power4 build
elf/sln is failed to link due to:
findlocale.c:96:(.text+0x22c): @local call to ifunc memchr
This is caused by linker bug and/or non-PIC code in PIE libc.a.
FAIL: glibcs-s390-linux-gnu build
elf/sln is failed to link due to:
collect2: fatal error: ld terminated with signal 11 [Segmentation fault],
core dumped
assertion fail bfd/elflink.c:14242
This is caused by linker bug and/or non-PIC code in PIE libc.a.
FAIL: glibcs-sh3eb-linux-gnu build
FAIL: glibcs-sh3-linux-gnu build
FAIL: glibcs-sh4eb-linux-gnu build
FAIL: glibcs-sh4eb-linux-gnu-soft build
FAIL: glibcs-sh4-linux-gnu build
FAIL: glibcs-sh4-linux-gnu-soft build
elf/sln is failed to link due to:
ld: read-only segment has dynamic relocations.
This is caused by linker bug and/or non-PIC code in PIE libc.a.
FAIL: glibcs-sparc64-linux-gnu build
FAIL: glibcs-sparcv9-linux-gnu build
elf/sln is failed to link due to:
ld: read-only segment has dynamic relocations.
This is caused by linker bug and/or non-PIC code in PIE libc.a.
FAIL: glibcs-tilegxbe-linux-gnu build
FAIL: glibcs-tilegxbe-linux-gnu-32 build
FAIL: glibcs-tilegx-linux-gnu build
FAIL: glibcs-tilegx-linux-gnu-32 build
FAIL: glibcs-tilepro-linux-gnu build
elf/sln is failed to link due to:
ld: read-only segment has dynamic relocations.
This is caused by linker bug and/or non-PIC code in PIE libc.a.
[BZ #19574]
* INSTALL: Regenerated.
* Makeconfig (pic-default): Updated for --enable-static-pie.
(pie-default): New for --enable-static-pie.
(default-pie-ldflag): Likewise.
(+link-static-before-libc): Add $(default-pie-ldflag).
(+prectorT): Updated for --enable-static-pie.
(+postctorT): Likewise.
(CFLAGS-.o): Add $(pie-default).
(CFLAGS-.op): Likewise.
* NEWS: Mention --enable-static-pie.
* config.h.in (ENABLE_STATIC_PIE): New.
* configure.ac (--enable-static-pie): New configure option.
(have-no-dynamic-linker): New LIBC_CONFIG_VAR.
(have-static-pie): Likewise.
Enable static PIE if linker supports --no-dynamic-linker.
(ENABLE_STATIC_PIE): New AC_DEFINE.
(enable-static-pie): New LIBC_CONFIG_VAR.
* configure: Regenerated.
* csu/libc-start.c (LIBC_START_MAIN): Call _dl_relocate_static_pie
in libc.a.
* csu/libc-tls.c (__libc_setup_tls): Add main_map->l_addr to
initimage.
* elf/dl-support.c: Include "dynamic-link.h" and don't include
"get-dynamic-info.h" for --enable-static-pie.
(_dl_relocate_static_pie): New function for --enable-static-pie.
(STATIC_PIE_BOOTSTRAP): New for --enable-static-pie.
(BOOTSTRAP_MAP): Likewise.
(RESOLVE_MAP): Likewise.
* elf/dynamic-link.h (ELF_DURING_STARTUP): Also check
STATIC_PIE_BOOTSTRAP.
* elf/get-dynamic-info.h (elf_get_dynamic_info): Likewise.
* manual/install.texi: Document --enable-static-pie.
* sysdeps/generic/ldsodefs.h (_dl_relocate_static_pie): New.
* sysdeps/x86_64/configure.ac: Check if linker supports static PIE.
* sysdeps/x86_64/configure: Regenerated.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=029e1197a4e0ace7a0ad18a00540d114926a524b
commit 029e1197a4e0ace7a0ad18a00540d114926a524b
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Sep 29 01:09:48 2017 -0700
ld.so: Replace (&bootstrap_map) with BOOTSTRAP_MAP
(&_dl_main_map) is used instead of (&bootstrap_map) to bootstrap static
PIE. Define BOOTSTRAP_MAP with (&_dl_main_map) to avoid hardcode to
(&bootstrap_map).
* elf/rtld.c (BOOTSTRAP_MAP): New.
(RESOLVE_MAP): Replace (&bootstrap_map) with BOOTSTRAP_MAP.
* sysdeps/hppa/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC):
Likewise.
* sysdeps/ia64/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC):
Likewise.
* sysdeps/mips/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC):
Likewise.
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