Message ID | 20220425181652.2627618-1-maskray@google.com |
---|---|
State | New |
Headers | show |
Series | [v2] elf: Replace PI_STATIC_AND_HIDDEN with opposite HIDDEN_VAR_NEEDS_DYNAMIC_RELOC | expand |
* Fangrui Song via Libc-alpha: > PI_STATIC_AND_HIDDEN indicates whether accesses to internal linkage > variables and hidden visibility variables in a shared object (ld.so) > need dynamic relocations (usually R_*_RELATIVE). PI (position > independent) in the macro name is a misnomer: a code sequence using GOT > is typically position-independent as well, but using dynamic relocations > does not meet the requirement. > > Not defining PI_STATIC_AND_HIDDEN is legacy and we expect that all new > ports will define PI_STATIC_AND_HIDDEN. Current ports defining > PI_STATIC_AND_HIDDEN are more than the opposite. Change the configure > default. > > No functional change. > > Note: HIDDEN_VAR_NEEDS_DYNAMIC_RELOC will be removed when Alan Modra's > powerpc64 static-pie work > (https://sourceware.org/pipermail/libc-alpha/2022-April/137987.html) > lands. > > Changes from v1: > * Correctly regenerate sysdeps/m68k/configure I can confirm that this still builds all targets. Thanks, Florian
On 25/04/2022 15:16, Fangrui Song wrote: > PI_STATIC_AND_HIDDEN indicates whether accesses to internal linkage > variables and hidden visibility variables in a shared object (ld.so) > need dynamic relocations (usually R_*_RELATIVE). PI (position > independent) in the macro name is a misnomer: a code sequence using GOT > is typically position-independent as well, but using dynamic relocations > does not meet the requirement. > > Not defining PI_STATIC_AND_HIDDEN is legacy and we expect that all new > ports will define PI_STATIC_AND_HIDDEN. Current ports defining > PI_STATIC_AND_HIDDEN are more than the opposite. Change the configure > default. > > No functional change. > > Note: HIDDEN_VAR_NEEDS_DYNAMIC_RELOC will be removed when Alan Modra's > powerpc64 static-pie work > (https://sourceware.org/pipermail/libc-alpha/2022-April/137987.html) > lands. > > Changes from v1: > * Correctly regenerate sysdeps/m68k/configure LGTM, thanks. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> > --- > config.h.in | 6 +++--- > elf/rtld.c | 2 +- > sysdeps/aarch64/configure | 5 ----- > sysdeps/aarch64/configure.ac | 4 ---- > sysdeps/alpha/configure | 5 ----- > sysdeps/alpha/configure.ac | 4 ---- > sysdeps/arc/configure | 2 -- > sysdeps/arc/configure.ac | 1 - > sysdeps/arm/configure | 3 --- > sysdeps/arm/configure.ac | 5 ----- > sysdeps/csky/configure | 3 --- > sysdeps/csky/configure.ac | 2 -- > sysdeps/hppa/configure | 3 +++ > sysdeps/hppa/configure.ac | 2 ++ > sysdeps/ia64/configure | 3 --- > sysdeps/ia64/configure.ac | 4 ---- > sysdeps/m68k/configure | 7 +++++++ > sysdeps/m68k/configure.ac | 6 ++++++ > sysdeps/microblaze/configure | 3 +++ > sysdeps/microblaze/configure.ac | 2 ++ > sysdeps/mips/configure | 2 ++ > sysdeps/mips/configure.ac | 2 +- > sysdeps/nios2/configure | 3 +++ > sysdeps/nios2/configure.ac | 2 ++ > sysdeps/or1k/configure | 3 --- > sysdeps/or1k/configure.ac | 2 -- > sysdeps/powerpc/powerpc32/configure | 3 +++ > sysdeps/powerpc/powerpc32/configure.ac | 2 ++ > sysdeps/powerpc/powerpc64/configure | 3 +++ > sysdeps/powerpc/powerpc64/configure.ac | 2 ++ > sysdeps/powerpc/tst-tlsifunc.c | 2 +- > sysdeps/riscv/configure | 3 --- > sysdeps/riscv/configure.ac | 2 -- > sysdeps/s390/configure | 3 --- > sysdeps/s390/configure.ac | 4 ---- > sysdeps/sh/configure | 3 --- > sysdeps/sh/configure.ac | 4 ---- > sysdeps/sparc/configure | 2 -- > sysdeps/sparc/configure.ac | 2 -- > sysdeps/x86/configure | 3 --- > sysdeps/x86/configure.ac | 4 ---- > 41 files changed, 46 insertions(+), 82 deletions(-) > create mode 100644 sysdeps/m68k/configure > create mode 100644 sysdeps/m68k/configure.ac > > diff --git a/config.h.in b/config.h.in > index a94f756859..916465fce8 100644 > --- a/config.h.in > +++ b/config.h.in > @@ -84,9 +84,9 @@ > /* Define if the compiler\'s exception support is based on libunwind. */ > #undef HAVE_CC_WITH_LIBUNWIND > > -/* Define if the access to static and hidden variables is position independent > - and does not need relocations. */ > -#undef PI_STATIC_AND_HIDDEN > +/* Define if the accesses to static and hidden variables in a shared object > + need dynamic relocations. */ > +#undef HIDDEN_VAR_NEEDS_DYNAMIC_RELOC > > /* Define this to disable the 'hidden_proto' et al macros in > include/libc-symbols.h that avoid PLT slots in PIE. */ > diff --git a/elf/rtld.c b/elf/rtld.c > index 93180466d6..be6daa1c44 100644 > --- a/elf/rtld.c > +++ b/elf/rtld.c > @@ -424,7 +424,7 @@ DL_SYSINFO_IMPLEMENTATION > is fine, too. The latter is important here. We can avoid setting > up a temporary link map for ld.so if we can mark _rtld_global as > hidden. */ > -#ifdef PI_STATIC_AND_HIDDEN > +#ifndef HIDDEN_VAR_NEEDS_DYNAMIC_RELOC > # define DONT_USE_BOOTSTRAP_MAP 1 > #endif > > diff --git a/sysdeps/aarch64/configure b/sysdeps/aarch64/configure > index 4c1fac49f3..bf972122b1 100644 > --- a/sysdeps/aarch64/configure > +++ b/sysdeps/aarch64/configure > @@ -1,11 +1,6 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/aarch64. > > -# Static and hidden objects are accessed without dynamic relocations. > -# The exception is -mcmodel=large which is unsupported with PIC/PIE. > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > - > # Static PIE is supported. > $as_echo "#define SUPPORT_STATIC_PIE 1" >>confdefs.h > > diff --git a/sysdeps/aarch64/configure.ac b/sysdeps/aarch64/configure.ac > index 3347c13fa1..51253d9802 100644 > --- a/sysdeps/aarch64/configure.ac > +++ b/sysdeps/aarch64/configure.ac > @@ -1,10 +1,6 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/aarch64. > > -# Static and hidden objects are accessed without dynamic relocations. > -# The exception is -mcmodel=large which is unsupported with PIC/PIE. > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > - > # Static PIE is supported. > AC_DEFINE(SUPPORT_STATIC_PIE) > > diff --git a/sysdeps/alpha/configure b/sysdeps/alpha/configure > index 3d665d96f2..f67a0e20a9 100644 > --- a/sysdeps/alpha/configure > +++ b/sysdeps/alpha/configure > @@ -1,11 +1,6 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/alpha. > > -# With required gcc+binutils, we can always access static and hidden > -# symbols in a position independent way. > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > - > # PIE builds fail on binutils 2.37 and earlier, see: > # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 > $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h > diff --git a/sysdeps/alpha/configure.ac b/sysdeps/alpha/configure.ac > index 8f9a39ed2e..465665def0 100644 > --- a/sysdeps/alpha/configure.ac > +++ b/sysdeps/alpha/configure.ac > @@ -1,10 +1,6 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/alpha. > > -# With required gcc+binutils, we can always access static and hidden > -# symbols in a position independent way. > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > - > # PIE builds fail on binutils 2.37 and earlier, see: > # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 > AC_DEFINE(PIE_UNSUPPORTED) > diff --git a/sysdeps/arc/configure b/sysdeps/arc/configure > index bce7d3c377..92050f44e3 100644 > --- a/sysdeps/arc/configure > +++ b/sysdeps/arc/configure > @@ -1,8 +1,6 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/arc. > > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > libc_cv_have_sdata_section=no > > # For ARC, historically ; was used for comments and not newline > diff --git a/sysdeps/arc/configure.ac b/sysdeps/arc/configure.ac > index cb490e47b3..619da4e088 100644 > --- a/sysdeps/arc/configure.ac > +++ b/sysdeps/arc/configure.ac > @@ -1,7 +1,6 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/arc. > > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > libc_cv_have_sdata_section=no > > # For ARC, historically ; was used for comments and not newline > diff --git a/sysdeps/arm/configure b/sysdeps/arm/configure > index 431e843b2b..b40ce60461 100644 > --- a/sysdeps/arm/configure > +++ b/sysdeps/arm/configure > @@ -1,9 +1,6 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/arm. > > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > - > # We check to see if the compiler and flags are > # selecting the hard-float ABI and if they are then > # we set libc_cv_arm_pcs_vfp to yes which causes > diff --git a/sysdeps/arm/configure.ac b/sysdeps/arm/configure.ac > index 90cdd69c75..da078ce012 100644 > --- a/sysdeps/arm/configure.ac > +++ b/sysdeps/arm/configure.ac > @@ -1,11 +1,6 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/arm. > > -dnl It is always possible to access static and hidden symbols in an > -dnl position independent way. This has been true since GCC 4.1, > -dnl which is older than the minimum version required to build libc. > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > - > # We check to see if the compiler and flags are > # selecting the hard-float ABI and if they are then > # we set libc_cv_arm_pcs_vfp to yes which causes > diff --git a/sysdeps/csky/configure b/sysdeps/csky/configure > index 27464eb707..bcbcea089a 100644 > --- a/sysdeps/csky/configure > +++ b/sysdeps/csky/configure > @@ -1,9 +1,6 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/csky. > > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > - > # PIE builds fail on binutils 2.37 and earlier, see: > # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 > $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h > diff --git a/sysdeps/csky/configure.ac b/sysdeps/csky/configure.ac > index 8e00824909..ffd8c1ca9c 100644 > --- a/sysdeps/csky/configure.ac > +++ b/sysdeps/csky/configure.ac > @@ -1,8 +1,6 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/csky. > > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > - > # PIE builds fail on binutils 2.37 and earlier, see: > # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 > AC_DEFINE(PIE_UNSUPPORTED) > diff --git a/sysdeps/hppa/configure b/sysdeps/hppa/configure > index cf5acf966d..ebb42c592c 100644 > --- a/sysdeps/hppa/configure > +++ b/sysdeps/hppa/configure > @@ -32,6 +32,9 @@ cat >>confdefs.h <<_ACEOF > _ACEOF > > > +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h > + > + > # PIE builds fail on binutils 2.37 and earlier, see: > # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 > $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h > diff --git a/sysdeps/hppa/configure.ac b/sysdeps/hppa/configure.ac > index 3e1c35bbd9..5e59a63f9a 100644 > --- a/sysdeps/hppa/configure.ac > +++ b/sysdeps/hppa/configure.ac > @@ -20,6 +20,8 @@ fi > rm -f conftest*]) > AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep) > > +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) > + > # PIE builds fail on binutils 2.37 and earlier, see: > # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 > AC_DEFINE(PIE_UNSUPPORTED) > diff --git a/sysdeps/ia64/configure b/sysdeps/ia64/configure > index 748cb52601..90be9c0266 100644 > --- a/sysdeps/ia64/configure > +++ b/sysdeps/ia64/configure > @@ -1,9 +1,6 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/ia64. > > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > - > # PIE builds fail on binutils 2.37 and earlier, see: > # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 > $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h > diff --git a/sysdeps/ia64/configure.ac b/sysdeps/ia64/configure.ac > index 8e5fba32c3..6958c26415 100644 > --- a/sysdeps/ia64/configure.ac > +++ b/sysdeps/ia64/configure.ac > @@ -1,10 +1,6 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/ia64. > > -dnl It is always possible to access static and hidden symbols in an > -dnl position independent way. > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > - > # PIE builds fail on binutils 2.37 and earlier, see: > # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 > AC_DEFINE(PIE_UNSUPPORTED) > diff --git a/sysdeps/m68k/configure b/sysdeps/m68k/configure > new file mode 100644 > index 0000000000..983836a08b > --- /dev/null > +++ b/sysdeps/m68k/configure > @@ -0,0 +1,7 @@ > +# This file is generated from configure.ac by Autoconf. DO NOT EDIT! > + # Local configure fragment for sysdeps/m68k. > + > +# Accessing static and hidden variables in a shared object needs relative > +# relocation. > +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h > + > diff --git a/sysdeps/m68k/configure.ac b/sysdeps/m68k/configure.ac > new file mode 100644 > index 0000000000..1c373b1ba3 > --- /dev/null > +++ b/sysdeps/m68k/configure.ac > @@ -0,0 +1,6 @@ > +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > +# Local configure fragment for sysdeps/m68k. > + > +# Accessing static and hidden variables in a shared object needs relative > +# relocation. > +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) > diff --git a/sysdeps/microblaze/configure b/sysdeps/microblaze/configure > index e6652562d2..b5306339df 100755 > --- a/sysdeps/microblaze/configure > +++ b/sysdeps/microblaze/configure > @@ -1,6 +1,9 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/microblaze. > > +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h > + > + > # gcc 11.2.1 and earlier crash with an internal compiler error, see: > # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103613 > $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h > diff --git a/sysdeps/microblaze/configure.ac b/sysdeps/microblaze/configure.ac > index 1c58f70a7b..0b451df111 100644 > --- a/sysdeps/microblaze/configure.ac > +++ b/sysdeps/microblaze/configure.ac > @@ -1,6 +1,8 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/microblaze. > > +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) > + > # gcc 11.2.1 and earlier crash with an internal compiler error, see: > # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103613 > AC_DEFINE(PIE_UNSUPPORTED) > diff --git a/sysdeps/mips/configure b/sysdeps/mips/configure > index 4e13248c03..3f4d9e9759 100644 > --- a/sysdeps/mips/configure > +++ b/sysdeps/mips/configure > @@ -1,6 +1,8 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/mips. > > +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h > + > > > > diff --git a/sysdeps/mips/configure.ac b/sysdeps/mips/configure.ac > index bcbdaffd9f..d3cd780d78 100644 > --- a/sysdeps/mips/configure.ac > +++ b/sysdeps/mips/configure.ac > @@ -3,7 +3,7 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > > dnl No MIPS GCC supports accessing static and hidden symbols in an > dnl position independent way. > -dnl AC_DEFINE(PI_STATIC_AND_HIDDEN) > +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) > > AC_CACHE_CHECK([whether the compiler is using the 2008 NaN encoding], > libc_cv_mips_nan2008, [AC_EGREP_CPP(yes, [dnl > diff --git a/sysdeps/nios2/configure b/sysdeps/nios2/configure > index 14c8a3a014..b3cd28349e 100644 > --- a/sysdeps/nios2/configure > +++ b/sysdeps/nios2/configure > @@ -160,3 +160,6 @@ $as_echo "$libc_cv_nios2_be" >&6; } > if test $libc_cv_nios2_be = yes; then > as_fn_error $? "Big endian not supported for Nios II" "$LINENO" 5 > fi > + > +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h > + > diff --git a/sysdeps/nios2/configure.ac b/sysdeps/nios2/configure.ac > index f05f43802b..f738e9a7ed 100644 > --- a/sysdeps/nios2/configure.ac > +++ b/sysdeps/nios2/configure.ac > @@ -11,3 +11,5 @@ AC_CACHE_CHECK([for big endian], > if test $libc_cv_nios2_be = yes; then > AC_MSG_ERROR([Big endian not supported for Nios II]) > fi > + > +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) > diff --git a/sysdeps/or1k/configure b/sysdeps/or1k/configure > index 1fe508c447..16146a8403 100644 > --- a/sysdeps/or1k/configure > +++ b/sysdeps/or1k/configure > @@ -1,5 +1,2 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/or1k. > - > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > diff --git a/sysdeps/or1k/configure.ac b/sysdeps/or1k/configure.ac > index 76ff97dc9a..b0214c6d84 100644 > --- a/sysdeps/or1k/configure.ac > +++ b/sysdeps/or1k/configure.ac > @@ -1,4 +1,2 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/or1k. > - > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > diff --git a/sysdeps/powerpc/powerpc32/configure b/sysdeps/powerpc/powerpc32/configure > index 29cfd53e8b..551505327a 100644 > --- a/sysdeps/powerpc/powerpc32/configure > +++ b/sysdeps/powerpc/powerpc32/configure > @@ -1,6 +1,9 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/powerpc/powerpc32. > > +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h > + > + > # See whether GCC uses -msecure-plt. > { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -msecure-plt by default" >&5 > $as_echo_n "checking for -msecure-plt by default... " >&6; } > diff --git a/sysdeps/powerpc/powerpc32/configure.ac b/sysdeps/powerpc/powerpc32/configure.ac > index 5d3a9b509d..2f0ea63e0d 100644 > --- a/sysdeps/powerpc/powerpc32/configure.ac > +++ b/sysdeps/powerpc/powerpc32/configure.ac > @@ -1,6 +1,8 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/powerpc/powerpc32. > > +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) > + > # See whether GCC uses -msecure-plt. > AC_CACHE_CHECK(for -msecure-plt by default, libc_cv_ppc_secure_plt, [dnl > echo 'int foo (void) { extern int bar; return bar; }' > conftest.c > diff --git a/sysdeps/powerpc/powerpc64/configure b/sysdeps/powerpc/powerpc64/configure > index fddea0355a..f57c58ac11 100644 > --- a/sysdeps/powerpc/powerpc64/configure > +++ b/sysdeps/powerpc/powerpc64/configure > @@ -1,6 +1,9 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/powerpc/powerpc64. > > +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h > + > + > { $as_echo "$as_me:${as_lineno-$LINENO}: checking for support for overlapping .opd entries" >&5 > $as_echo_n "checking for support for overlapping .opd entries... " >&6; } > if ${libc_cv_overlapping_opd+:} false; then : > diff --git a/sysdeps/powerpc/powerpc64/configure.ac b/sysdeps/powerpc/powerpc64/configure.ac > index 1f3d54414c..111a0ae4b3 100644 > --- a/sysdeps/powerpc/powerpc64/configure.ac > +++ b/sysdeps/powerpc/powerpc64/configure.ac > @@ -1,6 +1,8 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/powerpc/powerpc64. > > +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) > + > AC_CACHE_CHECK(for support for overlapping .opd entries, > libc_cv_overlapping_opd, [dnl > libc_cv_overlapping_opd=no > diff --git a/sysdeps/powerpc/tst-tlsifunc.c b/sysdeps/powerpc/tst-tlsifunc.c > index 6b256c6229..8e559b575d 100644 > --- a/sysdeps/powerpc/tst-tlsifunc.c > +++ b/sysdeps/powerpc/tst-tlsifunc.c > @@ -102,7 +102,7 @@ do_test (void) > if (&bar == bar_ptr) > printf ("PASS: bar address read from IFUNC resolver is correct.\n"); > #if !defined TST_TLSIFUNC_STATIC || !defined PIC \ > - || !defined PI_STATIC_AND_HIDDEN > + || defined HIDDEN_VAR_NEEDS_DYNAMIC_RELOC > else > { > printf ("FAIL: bar address read from IFUNC resolver is incorrect.\n"); > diff --git a/sysdeps/riscv/configure b/sysdeps/riscv/configure > index 4a56fca94b..2372225a26 100644 > --- a/sysdeps/riscv/configure > +++ b/sysdeps/riscv/configure > @@ -1,9 +1,6 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/riscv/elf. > > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > - > # Check if static linker supports R_RISCV_ALIGN > { $as_echo "$as_me:${as_lineno-$LINENO}: checking for R_RISCV_ALIGN linker relaxation support" >&5 > $as_echo_n "checking for R_RISCV_ALIGN linker relaxation support... " >&6; } > diff --git a/sysdeps/riscv/configure.ac b/sysdeps/riscv/configure.ac > index 44a5279903..dbcc216689 100644 > --- a/sysdeps/riscv/configure.ac > +++ b/sysdeps/riscv/configure.ac > @@ -1,8 +1,6 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/riscv/elf. > > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > - > # Check if static linker supports R_RISCV_ALIGN > AC_CACHE_CHECK([for R_RISCV_ALIGN linker relaxation support], [libc_cv_riscv_r_align],[dnl > cat > conftest.S <<EOF > diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure > index 431088acad..cc68cbbb03 100644 > --- a/sysdeps/s390/configure > +++ b/sysdeps/s390/configure > @@ -1,9 +1,6 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/s390. > > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > - > { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_tbegin" >&5 > $as_echo_n "checking for __builtin_tbegin... " >&6; } > if ${libc_cv_gcc_builtin_tbegin+:} false; then : > diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac > index 14948c81ed..daf1bc6823 100644 > --- a/sysdeps/s390/configure.ac > +++ b/sysdeps/s390/configure.ac > @@ -1,10 +1,6 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/s390. > > -dnl It is always possible to access static and hidden symbols in an > -dnl position independent way. > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > - > AC_CACHE_CHECK(for __builtin_tbegin, libc_cv_gcc_builtin_tbegin, [dnl > cat > conftest.c <<\EOF > #include <htmintrin.h> > diff --git a/sysdeps/sh/configure b/sysdeps/sh/configure > index 110eb65b06..3c05bb6b5e 100644 > --- a/sysdeps/sh/configure > +++ b/sysdeps/sh/configure > @@ -1,5 +1,2 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/sh. > - > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > diff --git a/sysdeps/sh/configure.ac b/sysdeps/sh/configure.ac > index 21400c447d..28d9e9a438 100644 > --- a/sysdeps/sh/configure.ac > +++ b/sysdeps/sh/configure.ac > @@ -1,6 +1,2 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/sh. > - > -dnl It is always possible to access static and hidden symbols in an > -dnl position independent way. > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > diff --git a/sysdeps/sparc/configure b/sysdeps/sparc/configure > index 491b00f0dc..70c084db5c 100644 > --- a/sysdeps/sparc/configure > +++ b/sysdeps/sparc/configure > @@ -1,4 +1,2 @@ > # This file is generated from configure.ac by Autoconf. DO NOT EDIT! > # Local configure fragment for sysdeps/sparc. > - > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > diff --git a/sysdeps/sparc/configure.ac b/sysdeps/sparc/configure.ac > index 5cdc0a984c..4fc6d6d7d1 100644 > --- a/sysdeps/sparc/configure.ac > +++ b/sysdeps/sparc/configure.ac > @@ -1,4 +1,2 @@ > GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. > # Local configure fragment for sysdeps/sparc. > - > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > diff --git a/sysdeps/x86/configure b/sysdeps/x86/configure > index 46d436fddf..a9c8c2ef67 100644 > --- a/sysdeps/x86/configure > +++ b/sysdeps/x86/configure > @@ -190,8 +190,5 @@ fi > config_vars="$config_vars > enable-x86-isa-level = $libc_cv_include_x86_isa_level" > > -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h > - > - > $as_echo "#define SUPPORT_STATIC_PIE 1" >>confdefs.h > > diff --git a/sysdeps/x86/configure.ac b/sysdeps/x86/configure.ac > index 918b636891..edd43a2551 100644 > --- a/sysdeps/x86/configure.ac > +++ b/sysdeps/x86/configure.ac > @@ -128,9 +128,5 @@ if test $libc_cv_include_x86_isa_level = yes; then > fi > LIBC_CONFIG_VAR([enable-x86-isa-level], [$libc_cv_include_x86_isa_level]) > > -dnl It is always possible to access static and hidden symbols in an > -dnl position independent way. > -AC_DEFINE(PI_STATIC_AND_HIDDEN) > - > dnl Static PIE is supported. > AC_DEFINE(SUPPORT_STATIC_PIE)
diff --git a/config.h.in b/config.h.in index a94f756859..916465fce8 100644 --- a/config.h.in +++ b/config.h.in @@ -84,9 +84,9 @@ /* Define if the compiler\'s exception support is based on libunwind. */ #undef HAVE_CC_WITH_LIBUNWIND -/* Define if the access to static and hidden variables is position independent - and does not need relocations. */ -#undef PI_STATIC_AND_HIDDEN +/* Define if the accesses to static and hidden variables in a shared object + need dynamic relocations. */ +#undef HIDDEN_VAR_NEEDS_DYNAMIC_RELOC /* Define this to disable the 'hidden_proto' et al macros in include/libc-symbols.h that avoid PLT slots in PIE. */ diff --git a/elf/rtld.c b/elf/rtld.c index 93180466d6..be6daa1c44 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -424,7 +424,7 @@ DL_SYSINFO_IMPLEMENTATION is fine, too. The latter is important here. We can avoid setting up a temporary link map for ld.so if we can mark _rtld_global as hidden. */ -#ifdef PI_STATIC_AND_HIDDEN +#ifndef HIDDEN_VAR_NEEDS_DYNAMIC_RELOC # define DONT_USE_BOOTSTRAP_MAP 1 #endif diff --git a/sysdeps/aarch64/configure b/sysdeps/aarch64/configure index 4c1fac49f3..bf972122b1 100644 --- a/sysdeps/aarch64/configure +++ b/sysdeps/aarch64/configure @@ -1,11 +1,6 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/aarch64. -# Static and hidden objects are accessed without dynamic relocations. -# The exception is -mcmodel=large which is unsupported with PIC/PIE. -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - - # Static PIE is supported. $as_echo "#define SUPPORT_STATIC_PIE 1" >>confdefs.h diff --git a/sysdeps/aarch64/configure.ac b/sysdeps/aarch64/configure.ac index 3347c13fa1..51253d9802 100644 --- a/sysdeps/aarch64/configure.ac +++ b/sysdeps/aarch64/configure.ac @@ -1,10 +1,6 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/aarch64. -# Static and hidden objects are accessed without dynamic relocations. -# The exception is -mcmodel=large which is unsupported with PIC/PIE. -AC_DEFINE(PI_STATIC_AND_HIDDEN) - # Static PIE is supported. AC_DEFINE(SUPPORT_STATIC_PIE) diff --git a/sysdeps/alpha/configure b/sysdeps/alpha/configure index 3d665d96f2..f67a0e20a9 100644 --- a/sysdeps/alpha/configure +++ b/sysdeps/alpha/configure @@ -1,11 +1,6 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/alpha. -# With required gcc+binutils, we can always access static and hidden -# symbols in a position independent way. -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - - # PIE builds fail on binutils 2.37 and earlier, see: # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h diff --git a/sysdeps/alpha/configure.ac b/sysdeps/alpha/configure.ac index 8f9a39ed2e..465665def0 100644 --- a/sysdeps/alpha/configure.ac +++ b/sysdeps/alpha/configure.ac @@ -1,10 +1,6 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/alpha. -# With required gcc+binutils, we can always access static and hidden -# symbols in a position independent way. -AC_DEFINE(PI_STATIC_AND_HIDDEN) - # PIE builds fail on binutils 2.37 and earlier, see: # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 AC_DEFINE(PIE_UNSUPPORTED) diff --git a/sysdeps/arc/configure b/sysdeps/arc/configure index bce7d3c377..92050f44e3 100644 --- a/sysdeps/arc/configure +++ b/sysdeps/arc/configure @@ -1,8 +1,6 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/arc. -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - libc_cv_have_sdata_section=no # For ARC, historically ; was used for comments and not newline diff --git a/sysdeps/arc/configure.ac b/sysdeps/arc/configure.ac index cb490e47b3..619da4e088 100644 --- a/sysdeps/arc/configure.ac +++ b/sysdeps/arc/configure.ac @@ -1,7 +1,6 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/arc. -AC_DEFINE(PI_STATIC_AND_HIDDEN) libc_cv_have_sdata_section=no # For ARC, historically ; was used for comments and not newline diff --git a/sysdeps/arm/configure b/sysdeps/arm/configure index 431e843b2b..b40ce60461 100644 --- a/sysdeps/arm/configure +++ b/sysdeps/arm/configure @@ -1,9 +1,6 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/arm. -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - - # We check to see if the compiler and flags are # selecting the hard-float ABI and if they are then # we set libc_cv_arm_pcs_vfp to yes which causes diff --git a/sysdeps/arm/configure.ac b/sysdeps/arm/configure.ac index 90cdd69c75..da078ce012 100644 --- a/sysdeps/arm/configure.ac +++ b/sysdeps/arm/configure.ac @@ -1,11 +1,6 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/arm. -dnl It is always possible to access static and hidden symbols in an -dnl position independent way. This has been true since GCC 4.1, -dnl which is older than the minimum version required to build libc. -AC_DEFINE(PI_STATIC_AND_HIDDEN) - # We check to see if the compiler and flags are # selecting the hard-float ABI and if they are then # we set libc_cv_arm_pcs_vfp to yes which causes diff --git a/sysdeps/csky/configure b/sysdeps/csky/configure index 27464eb707..bcbcea089a 100644 --- a/sysdeps/csky/configure +++ b/sysdeps/csky/configure @@ -1,9 +1,6 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/csky. -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - - # PIE builds fail on binutils 2.37 and earlier, see: # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h diff --git a/sysdeps/csky/configure.ac b/sysdeps/csky/configure.ac index 8e00824909..ffd8c1ca9c 100644 --- a/sysdeps/csky/configure.ac +++ b/sysdeps/csky/configure.ac @@ -1,8 +1,6 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/csky. -AC_DEFINE(PI_STATIC_AND_HIDDEN) - # PIE builds fail on binutils 2.37 and earlier, see: # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 AC_DEFINE(PIE_UNSUPPORTED) diff --git a/sysdeps/hppa/configure b/sysdeps/hppa/configure index cf5acf966d..ebb42c592c 100644 --- a/sysdeps/hppa/configure +++ b/sysdeps/hppa/configure @@ -32,6 +32,9 @@ cat >>confdefs.h <<_ACEOF _ACEOF +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h + + # PIE builds fail on binutils 2.37 and earlier, see: # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h diff --git a/sysdeps/hppa/configure.ac b/sysdeps/hppa/configure.ac index 3e1c35bbd9..5e59a63f9a 100644 --- a/sysdeps/hppa/configure.ac +++ b/sysdeps/hppa/configure.ac @@ -20,6 +20,8 @@ fi rm -f conftest*]) AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep) +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) + # PIE builds fail on binutils 2.37 and earlier, see: # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 AC_DEFINE(PIE_UNSUPPORTED) diff --git a/sysdeps/ia64/configure b/sysdeps/ia64/configure index 748cb52601..90be9c0266 100644 --- a/sysdeps/ia64/configure +++ b/sysdeps/ia64/configure @@ -1,9 +1,6 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/ia64. -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - - # PIE builds fail on binutils 2.37 and earlier, see: # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h diff --git a/sysdeps/ia64/configure.ac b/sysdeps/ia64/configure.ac index 8e5fba32c3..6958c26415 100644 --- a/sysdeps/ia64/configure.ac +++ b/sysdeps/ia64/configure.ac @@ -1,10 +1,6 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/ia64. -dnl It is always possible to access static and hidden symbols in an -dnl position independent way. -AC_DEFINE(PI_STATIC_AND_HIDDEN) - # PIE builds fail on binutils 2.37 and earlier, see: # https://sourceware.org/bugzilla/show_bug.cgi?id=28672 AC_DEFINE(PIE_UNSUPPORTED) diff --git a/sysdeps/m68k/configure b/sysdeps/m68k/configure new file mode 100644 index 0000000000..983836a08b --- /dev/null +++ b/sysdeps/m68k/configure @@ -0,0 +1,7 @@ +# This file is generated from configure.ac by Autoconf. DO NOT EDIT! + # Local configure fragment for sysdeps/m68k. + +# Accessing static and hidden variables in a shared object needs relative +# relocation. +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h + diff --git a/sysdeps/m68k/configure.ac b/sysdeps/m68k/configure.ac new file mode 100644 index 0000000000..1c373b1ba3 --- /dev/null +++ b/sysdeps/m68k/configure.ac @@ -0,0 +1,6 @@ +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local configure fragment for sysdeps/m68k. + +# Accessing static and hidden variables in a shared object needs relative +# relocation. +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) diff --git a/sysdeps/microblaze/configure b/sysdeps/microblaze/configure index e6652562d2..b5306339df 100755 --- a/sysdeps/microblaze/configure +++ b/sysdeps/microblaze/configure @@ -1,6 +1,9 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/microblaze. +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h + + # gcc 11.2.1 and earlier crash with an internal compiler error, see: # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103613 $as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h diff --git a/sysdeps/microblaze/configure.ac b/sysdeps/microblaze/configure.ac index 1c58f70a7b..0b451df111 100644 --- a/sysdeps/microblaze/configure.ac +++ b/sysdeps/microblaze/configure.ac @@ -1,6 +1,8 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/microblaze. +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) + # gcc 11.2.1 and earlier crash with an internal compiler error, see: # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103613 AC_DEFINE(PIE_UNSUPPORTED) diff --git a/sysdeps/mips/configure b/sysdeps/mips/configure index 4e13248c03..3f4d9e9759 100644 --- a/sysdeps/mips/configure +++ b/sysdeps/mips/configure @@ -1,6 +1,8 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/mips. +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h + diff --git a/sysdeps/mips/configure.ac b/sysdeps/mips/configure.ac index bcbdaffd9f..d3cd780d78 100644 --- a/sysdeps/mips/configure.ac +++ b/sysdeps/mips/configure.ac @@ -3,7 +3,7 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. dnl No MIPS GCC supports accessing static and hidden symbols in an dnl position independent way. -dnl AC_DEFINE(PI_STATIC_AND_HIDDEN) +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) AC_CACHE_CHECK([whether the compiler is using the 2008 NaN encoding], libc_cv_mips_nan2008, [AC_EGREP_CPP(yes, [dnl diff --git a/sysdeps/nios2/configure b/sysdeps/nios2/configure index 14c8a3a014..b3cd28349e 100644 --- a/sysdeps/nios2/configure +++ b/sysdeps/nios2/configure @@ -160,3 +160,6 @@ $as_echo "$libc_cv_nios2_be" >&6; } if test $libc_cv_nios2_be = yes; then as_fn_error $? "Big endian not supported for Nios II" "$LINENO" 5 fi + +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h + diff --git a/sysdeps/nios2/configure.ac b/sysdeps/nios2/configure.ac index f05f43802b..f738e9a7ed 100644 --- a/sysdeps/nios2/configure.ac +++ b/sysdeps/nios2/configure.ac @@ -11,3 +11,5 @@ AC_CACHE_CHECK([for big endian], if test $libc_cv_nios2_be = yes; then AC_MSG_ERROR([Big endian not supported for Nios II]) fi + +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) diff --git a/sysdeps/or1k/configure b/sysdeps/or1k/configure index 1fe508c447..16146a8403 100644 --- a/sysdeps/or1k/configure +++ b/sysdeps/or1k/configure @@ -1,5 +1,2 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/or1k. - -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - diff --git a/sysdeps/or1k/configure.ac b/sysdeps/or1k/configure.ac index 76ff97dc9a..b0214c6d84 100644 --- a/sysdeps/or1k/configure.ac +++ b/sysdeps/or1k/configure.ac @@ -1,4 +1,2 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/or1k. - -AC_DEFINE(PI_STATIC_AND_HIDDEN) diff --git a/sysdeps/powerpc/powerpc32/configure b/sysdeps/powerpc/powerpc32/configure index 29cfd53e8b..551505327a 100644 --- a/sysdeps/powerpc/powerpc32/configure +++ b/sysdeps/powerpc/powerpc32/configure @@ -1,6 +1,9 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/powerpc/powerpc32. +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h + + # See whether GCC uses -msecure-plt. { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -msecure-plt by default" >&5 $as_echo_n "checking for -msecure-plt by default... " >&6; } diff --git a/sysdeps/powerpc/powerpc32/configure.ac b/sysdeps/powerpc/powerpc32/configure.ac index 5d3a9b509d..2f0ea63e0d 100644 --- a/sysdeps/powerpc/powerpc32/configure.ac +++ b/sysdeps/powerpc/powerpc32/configure.ac @@ -1,6 +1,8 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/powerpc/powerpc32. +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) + # See whether GCC uses -msecure-plt. AC_CACHE_CHECK(for -msecure-plt by default, libc_cv_ppc_secure_plt, [dnl echo 'int foo (void) { extern int bar; return bar; }' > conftest.c diff --git a/sysdeps/powerpc/powerpc64/configure b/sysdeps/powerpc/powerpc64/configure index fddea0355a..f57c58ac11 100644 --- a/sysdeps/powerpc/powerpc64/configure +++ b/sysdeps/powerpc/powerpc64/configure @@ -1,6 +1,9 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/powerpc/powerpc64. +$as_echo "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for support for overlapping .opd entries" >&5 $as_echo_n "checking for support for overlapping .opd entries... " >&6; } if ${libc_cv_overlapping_opd+:} false; then : diff --git a/sysdeps/powerpc/powerpc64/configure.ac b/sysdeps/powerpc/powerpc64/configure.ac index 1f3d54414c..111a0ae4b3 100644 --- a/sysdeps/powerpc/powerpc64/configure.ac +++ b/sysdeps/powerpc/powerpc64/configure.ac @@ -1,6 +1,8 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/powerpc/powerpc64. +AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC) + AC_CACHE_CHECK(for support for overlapping .opd entries, libc_cv_overlapping_opd, [dnl libc_cv_overlapping_opd=no diff --git a/sysdeps/powerpc/tst-tlsifunc.c b/sysdeps/powerpc/tst-tlsifunc.c index 6b256c6229..8e559b575d 100644 --- a/sysdeps/powerpc/tst-tlsifunc.c +++ b/sysdeps/powerpc/tst-tlsifunc.c @@ -102,7 +102,7 @@ do_test (void) if (&bar == bar_ptr) printf ("PASS: bar address read from IFUNC resolver is correct.\n"); #if !defined TST_TLSIFUNC_STATIC || !defined PIC \ - || !defined PI_STATIC_AND_HIDDEN + || defined HIDDEN_VAR_NEEDS_DYNAMIC_RELOC else { printf ("FAIL: bar address read from IFUNC resolver is incorrect.\n"); diff --git a/sysdeps/riscv/configure b/sysdeps/riscv/configure index 4a56fca94b..2372225a26 100644 --- a/sysdeps/riscv/configure +++ b/sysdeps/riscv/configure @@ -1,9 +1,6 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/riscv/elf. -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - - # Check if static linker supports R_RISCV_ALIGN { $as_echo "$as_me:${as_lineno-$LINENO}: checking for R_RISCV_ALIGN linker relaxation support" >&5 $as_echo_n "checking for R_RISCV_ALIGN linker relaxation support... " >&6; } diff --git a/sysdeps/riscv/configure.ac b/sysdeps/riscv/configure.ac index 44a5279903..dbcc216689 100644 --- a/sysdeps/riscv/configure.ac +++ b/sysdeps/riscv/configure.ac @@ -1,8 +1,6 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/riscv/elf. -AC_DEFINE(PI_STATIC_AND_HIDDEN) - # Check if static linker supports R_RISCV_ALIGN AC_CACHE_CHECK([for R_RISCV_ALIGN linker relaxation support], [libc_cv_riscv_r_align],[dnl cat > conftest.S <<EOF diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure index 431088acad..cc68cbbb03 100644 --- a/sysdeps/s390/configure +++ b/sysdeps/s390/configure @@ -1,9 +1,6 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/s390. -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - - { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_tbegin" >&5 $as_echo_n "checking for __builtin_tbegin... " >&6; } if ${libc_cv_gcc_builtin_tbegin+:} false; then : diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac index 14948c81ed..daf1bc6823 100644 --- a/sysdeps/s390/configure.ac +++ b/sysdeps/s390/configure.ac @@ -1,10 +1,6 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/s390. -dnl It is always possible to access static and hidden symbols in an -dnl position independent way. -AC_DEFINE(PI_STATIC_AND_HIDDEN) - AC_CACHE_CHECK(for __builtin_tbegin, libc_cv_gcc_builtin_tbegin, [dnl cat > conftest.c <<\EOF #include <htmintrin.h> diff --git a/sysdeps/sh/configure b/sysdeps/sh/configure index 110eb65b06..3c05bb6b5e 100644 --- a/sysdeps/sh/configure +++ b/sysdeps/sh/configure @@ -1,5 +1,2 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/sh. - -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - diff --git a/sysdeps/sh/configure.ac b/sysdeps/sh/configure.ac index 21400c447d..28d9e9a438 100644 --- a/sysdeps/sh/configure.ac +++ b/sysdeps/sh/configure.ac @@ -1,6 +1,2 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/sh. - -dnl It is always possible to access static and hidden symbols in an -dnl position independent way. -AC_DEFINE(PI_STATIC_AND_HIDDEN) diff --git a/sysdeps/sparc/configure b/sysdeps/sparc/configure index 491b00f0dc..70c084db5c 100644 --- a/sysdeps/sparc/configure +++ b/sysdeps/sparc/configure @@ -1,4 +1,2 @@ # This file is generated from configure.ac by Autoconf. DO NOT EDIT! # Local configure fragment for sysdeps/sparc. - -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h diff --git a/sysdeps/sparc/configure.ac b/sysdeps/sparc/configure.ac index 5cdc0a984c..4fc6d6d7d1 100644 --- a/sysdeps/sparc/configure.ac +++ b/sysdeps/sparc/configure.ac @@ -1,4 +1,2 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/sparc. - -AC_DEFINE(PI_STATIC_AND_HIDDEN) diff --git a/sysdeps/x86/configure b/sysdeps/x86/configure index 46d436fddf..a9c8c2ef67 100644 --- a/sysdeps/x86/configure +++ b/sysdeps/x86/configure @@ -190,8 +190,5 @@ fi config_vars="$config_vars enable-x86-isa-level = $libc_cv_include_x86_isa_level" -$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h - - $as_echo "#define SUPPORT_STATIC_PIE 1" >>confdefs.h diff --git a/sysdeps/x86/configure.ac b/sysdeps/x86/configure.ac index 918b636891..edd43a2551 100644 --- a/sysdeps/x86/configure.ac +++ b/sysdeps/x86/configure.ac @@ -128,9 +128,5 @@ if test $libc_cv_include_x86_isa_level = yes; then fi LIBC_CONFIG_VAR([enable-x86-isa-level], [$libc_cv_include_x86_isa_level]) -dnl It is always possible to access static and hidden symbols in an -dnl position independent way. -AC_DEFINE(PI_STATIC_AND_HIDDEN) - dnl Static PIE is supported. AC_DEFINE(SUPPORT_STATIC_PIE)