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b19de59d62
glibc/sysdeps/i386
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Fangrui Song b19de59d62 elf: Avoid nested functions in the loader [BZ #27220] 
dynamic-link.h is included more than once in some elf/ files (rtld.c,
dl-conflict.c, dl-reloc.c, dl-reloc-static-pie.c) and uses GCC nested
functions. This harms readability and the nested functions usage
is the biggest obstacle prevents Clang build (Clang doesn't support GCC
nested functions).

The key idea for unnesting is to add extra parameters (struct link_map
*and struct r_scope_elm *[]) to RESOLVE_MAP,
ELF_MACHINE_BEFORE_RTLD_RELOC, ELF_DYNAMIC_RELOCATE, elf_machine_rel[a],
elf_machine_lazy_rel, and elf_machine_runtime_setup. (This is inspired
by Stan Shebs' ppc64/x86-64 implementation in the
google/grte/v5-2.27/master which uses mixed extra parameters and static
variables.)

Future simplification:
* If mips elf_machine_runtime_setup no longer needs RESOLVE_GOTSYM,
  elf_machine_runtime_setup can drop the `scope` parameter.
* If TLSDESC no longer need to be in elf_machine_lazy_rel,
  elf_machine_lazy_rel can drop the `scope` parameter.

Tested on aarch64, i386, x86-64, powerpc64le, powerpc64, powerpc32,
sparc64, sparcv9, s390x, s390, hppa, ia64, armhf, alpha, and mips64.
In addition, tested build-many-glibcs.py with {arc,csky,microblaze,nios2}-linux-gnu
and riscv64-linux-gnu-rv64imafdc-lp64d.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
(cherry picked from commit 490e6c62aa)
2022-04-08 14:18:11 -04:00
..
fpu i386: Regenerate ulps 2021-07-25 22:29:27 +02:00
htl Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
i586 Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
i686 i386: Regenerate ulps 2021-07-25 22:29:27 +02:00
i786
nptl nptl: Move pthread_spin_lock into libc 2021-04-23 17:06:46 +02:00
sys Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
____longjmp_chk.S
__longjmp.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
abort-instr.h
add_n.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
addmul_1.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
asm-syntax.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
backtrace.c i386: Implement backtrace on top of <unwind-link.h> 2021-03-01 15:58:58 +01:00
bcopy.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
bsd-_setjmp.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
bsd-setjmp.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
bzero.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
configure configure: Check for static PIE support 2021-01-21 15:54:50 +00:00
configure.ac configure: Check for static PIE support 2021-01-21 15:54:50 +00:00
crti.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
crtn.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-irel.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-machine.h elf: Avoid nested functions in the loader [BZ #27220] 2022-04-08 14:18:11 -04:00
dl-procinfo.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-tls.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-tlsdesc.h i386: Remove lazy tlsdesc relocation related code 2021-04-15 09:47:59 +01:00
dl-tlsdesc.S i386: Remove lazy tlsdesc relocation related code 2021-04-15 09:47:59 +01:00
dl-trampoline.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ffs.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
gccframe.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
htonl.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
htons.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
i386-mcount.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Implies Add float128 support for x86_64, x86. 2017-06-26 22:02:24 +00:00
isa.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
link-defines.sym
lshift.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
machine-gmon.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile mcheck: Align struct hdr to MALLOC_ALIGNMENT bytes [BZ #28068] 2021-07-12 18:13:32 -07:00
malloc-alignment.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memchr.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memcmp.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memcopy.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memcpy_chk.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memcpy.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memmove_chk.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memmove.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
mempcpy_chk.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
mempcpy.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
memset_chk.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memset.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memusage.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
mp_clz_tab.c
mul_1.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
preconfigure
pthread_spin_trylock.S nptl: Move pthread_spin_trylock into libc 2021-04-23 17:06:48 +02:00
rawmemchr.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
rshift.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setfpucw.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setjmp.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
stackguard-macros.h
stackinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
start.S Reduce the statically linked startup code [BZ #23323] 2021-02-25 12:13:02 +01:00
stpcpy.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
stpncpy.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
strcat.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
strchr.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
strchrnul.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
strcspn.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
string-inlines.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
strlen.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
strlen.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
strpbrk.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
strrchr.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
strspn.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sub_n.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
submul_1.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
symbol-hacks.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sysdep.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tls-macros.h i386: Remove build support for GCC older than GCC 6 2020-04-07 06:44:37 -07:00
tlsdesc.c elf: Remove lazy tlsdesc relocation related code 2021-04-21 14:35:53 +01:00
tlsdesc.sym
tst-audit3.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-audit3.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-audit.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-auditmod3a.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-auditmod3b.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-ld-sse-use.sh Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
unwind-arch.h Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder 2021-03-01 15:58:01 +01:00
Versions Move __fentry__ version definition to sysdeps/{i386,x86_64} 2018-08-10 09:07:44 +02:00