commit 44a81ebb7698dac41ffa7acd5e0cc1578e5ab1fd Author: H.J. Lu Date: Mon Apr 14 15:59:47 2014 -0700 [android] Always enable --eh-frame-hdr for static executable See 5e6cdf76af295c9a39b695ca228cff675e8ff4ae and 23e3137ee2897464b051599b85a09f130d3ad05d Change-Id: Ibda473188e5a10f2a0592f2494ad00ad1f91e04b Signed-off-by: Dmitry Moskalchuk --- gcc/config.in | 6 +++++ gcc/config/alpha/elf.h | 4 +++ gcc/config/freebsd.h | 4 +++ gcc/config/gnu-user.h | 4 +++ gcc/config/openbsd.h | 4 +++ gcc/config/sol2.h | 4 +++ gcc/configure | 36 +++++++++++++++++++++++++++++++++ gcc/configure.ac | 29 ++++++++++++++++++++++++++ gcc/testsuite/g++.dg/eh/spec3-static.C | 25 ++++++++++++++++++++++ libgcc/crtstuff.c | 11 ++++++---- 10 files changed, 123 insertions(+), 4 deletions(-) --- a/gcc/config.in +++ b/gcc/config.in @@ -2266,6 +2266,12 @@ #endif +/* Define if your system supports PT_GNU_EH_FRAME for static executable. */ +#ifndef USED_FOR_TARGET +#undef USE_EH_FRAME_HDR_FOR_STATIC +#endif + + /* Define to 1 if the 'long long' type is wider than 'long' but still efficiently supported by the host hardware. */ #ifndef USED_FOR_TARGET --- a/gcc/config/alpha/elf.h +++ b/gcc/config/alpha/elf.h @@ -142,5 +142,9 @@ I imagine that other systems will catch up. In the meantime, it doesn't harm to make sure that the data exists to be used later. */ #if defined(HAVE_LD_EH_FRAME_HDR) +#ifdef USE_EH_FRAME_HDR_FOR_STATIC +#define LINK_EH_SPEC "--eh-frame-hdr " +#else #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} " #endif +#endif --- a/gcc/config/freebsd.h +++ b/gcc/config/freebsd.h @@ -45,8 +45,12 @@ #define LIB_SPEC FBSD_LIB_SPEC #if defined(HAVE_LD_EH_FRAME_HDR) +#ifdef USE_EH_FRAME_HDR_FOR_STATIC +#define LINK_EH_SPEC "--eh-frame-hdr " +#else #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} " #endif +#endif #ifdef TARGET_LIBC_PROVIDES_SSP #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \ --- a/gcc/config/gnu-user.h +++ b/gcc/config/gnu-user.h @@ -106,8 +106,12 @@ #define LIB_SPEC GNU_USER_TARGET_LIB_SPEC #if defined(HAVE_LD_EH_FRAME_HDR) +#ifdef USE_EH_FRAME_HDR_FOR_STATIC +#define LINK_EH_SPEC "--eh-frame-hdr " +#else #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} " #endif +#endif #define GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC \ "%{static|static-pie:--start-group} %G %{!nolibc:%L} \ --- a/gcc/config/openbsd.h +++ b/gcc/config/openbsd.h @@ -136,8 +136,12 @@ #define LIB_SPEC OBSD_LIB_SPEC #if defined(HAVE_LD_EH_FRAME_HDR) +#ifdef USE_EH_FRAME_HDR_FOR_STATIC +#define LINK_EH_SPEC "--eh-frame-hdr " +#else #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} " #endif +#endif #undef LIB_SPEC #define LIB_SPEC OBSD_LIB_SPEC --- a/gcc/config/sol2.h +++ b/gcc/config/sol2.h @@ -434,7 +434,11 @@ /* Solaris 11 build 135+ implements dl_iterate_phdr. GNU ld needs --eh-frame-hdr to create the required .eh_frame_hdr sections. */ #if defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR) +#ifdef USE_EH_FRAME_HDR_FOR_STATIC +#define LINK_EH_SPEC "--eh-frame-hdr " +#else #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} " +#endif #endif /* HAVE_LD_EH_FRAME && TARGET_DL_ITERATE_PHDR */ #endif --- a/gcc/configure +++ b/gcc/configure @@ -1000,6 +1000,7 @@ enable_fix_cortex_a53_843419 with_glibc_version enable_gnu_unique_object +enable_eh_frame_hdr_for_static enable_linker_build_id enable_libssp enable_default_ssp @@ -1754,6 +1755,9 @@ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on glibc systems + --enable-eh-frame-hdr-for-static + enable linker PT_GNU_EH_FRAME support for static + executable --enable-linker-build-id compiler will always pass --build-id to linker --enable-libssp enable linking against libssp @@ -28843,6 +28847,38 @@ $as_echo "#define HAVE_LD_EH_FRAME_HDR 1" >>confdefs.h + # Check whether --enable-eh-frame-hdr-for-static was given. +if test "${enable_eh_frame_hdr_for_static+set}" = set; then : + enableval=$enable_eh_frame_hdr_for_static; case $enable_eh_frame_hdr_for_static in + yes | no) ;; + *) as_fn_error "'$enable_eh_frame_hdr_for_static' is an invalid +value for --enable-eh-frame-hdr-for-static. +Valid choices are 'yes' and 'no'." "$LINENO" 5 ;; + esac +else + # Only support for glibc 2.3.0 or higher with AT_PHDR/AT_PHNUM from +# Linux kernel. + if test x$host = x$build -a x$host = x$target && + ldd --version 2>&1 >/dev/null && + glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then + glibcmajor=`expr "$glibcver" : "\([0-9]*\)"` + glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"` + glibcnum=`expr $glibcmajor \* 1000 + $glibcminor` + if test "$glibcnum" -ge 2003 ; then + auvx=`LD_SHOW_AUXV=1 ldd 2>/dev/null` + if echo "$auvx" | grep AT_PHDR > /dev/null && + echo "$auvx" | grep AT_PHNUM > /dev/null; then + enable_eh_frame_hdr_for_static=yes + fi + fi + fi +fi + + if test x$enable_eh_frame_hdr_for_static = xyes; then + +$as_echo "#define USE_EH_FRAME_HDR_FOR_STATIC 1" >>confdefs.h + + fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld_eh_frame_hdr" >&5 $as_echo "$gcc_cv_ld_eh_frame_hdr" >&6; } --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -5376,6 +5376,35 @@ if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, [Define if your linker supports .eh_frame_hdr.]) + AC_ARG_ENABLE(eh-frame-hdr-for-static, + [AS_HELP_STRING([--enable-eh-frame-hdr-for-static], + [enable linker PT_GNU_EH_FRAME support for static executable])], + [case $enable_eh_frame_hdr_for_static in + yes | no) ;; + *) AC_MSG_ERROR(['$enable_eh_frame_hdr_for_static' is an invalid +value for --enable-eh-frame-hdr-for-static. +Valid choices are 'yes' and 'no'.]) ;; + esac], +# Only support for glibc 2.3.0 or higher with AT_PHDR/AT_PHNUM from +# Linux kernel. + [[if test x$host = x$build -a x$host = x$target && + ldd --version 2>&1 >/dev/null && + glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then + glibcmajor=`expr "$glibcver" : "\([0-9]*\)"` + glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"` + glibcnum=`expr $glibcmajor \* 1000 + $glibcminor` + if test "$glibcnum" -ge 2003 ; then + auvx=`LD_SHOW_AUXV=1 ldd 2>/dev/null` + if echo "$auvx" | grep AT_PHDR > /dev/null && + echo "$auvx" | grep AT_PHNUM > /dev/null; then + enable_eh_frame_hdr_for_static=yes + fi + fi + fi]]) + if test x$enable_eh_frame_hdr_for_static = xyes; then + AC_DEFINE(USE_EH_FRAME_HDR_FOR_STATIC, 1, +[Define if your system supports PT_GNU_EH_FRAME for static executable.]) + fi fi AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) --- /dev/null +++ b/gcc/testsuite/g++.dg/eh/spec3-static.C @@ -0,0 +1,25 @@ +// PR c++/4381 +// Test that exception-specs work properly for classes with virtual bases. + +// { dg-do run } +// { dg-options "-static" } + +class Base {}; + +struct A : virtual public Base +{ + A() {} +}; + +struct B {}; + +void func() throw (B,A) +{ + throw A(); +} + +int main(void) +{ + try { func(); } + catch (A& a) { } +} --- a/libgcc/crtstuff.c +++ b/libgcc/crtstuff.c @@ -88,7 +88,8 @@ #if defined(OBJECT_FORMAT_ELF) \ && !defined(OBJECT_FORMAT_FLAT) \ && defined(HAVE_LD_EH_FRAME_HDR) \ - && !defined(inhibit_libc) && !defined(CRTSTUFFT_O) \ + && !defined(inhibit_libc) \ + && (defined(USE_EH_FRAME_HDR_FOR_STATIC) || !defined(CRTSTUFFT_O)) \ && defined(BSD_DL_ITERATE_PHDR_AVAILABLE) #include # define USE_PT_GNU_EH_FRAME @@ -97,7 +98,8 @@ #if defined(OBJECT_FORMAT_ELF) \ && !defined(OBJECT_FORMAT_FLAT) \ && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR) \ - && !defined(inhibit_libc) && !defined(CRTSTUFFT_O) \ + && !defined(inhibit_libc) \ + && (defined(USE_EH_FRAME_HDR_FOR_STATIC) || !defined(CRTSTUFFT_O)) \ && defined(__sun__) && defined(__svr4__) #include # define USE_PT_GNU_EH_FRAME @@ -106,7 +108,8 @@ #if defined(OBJECT_FORMAT_ELF) \ && !defined(OBJECT_FORMAT_FLAT) \ && defined(HAVE_LD_EH_FRAME_HDR) \ - && !defined(inhibit_libc) && !defined(CRTSTUFFT_O) \ + && !defined(inhibit_libc) \ + && (defined(USE_EH_FRAME_HDR_FOR_STATIC) || !defined(CRTSTUFFT_O)) \ && defined(__GLIBC__) && __GLIBC__ >= 2 #include /* uClibc pretends to be glibc 2.2 and DT_CONFIG is defined in its link.h. @@ -121,7 +124,7 @@ #if defined(OBJECT_FORMAT_ELF) \ && !defined(OBJECT_FORMAT_FLAT) \ && defined(HAVE_LD_EH_FRAME_HDR) \ - && !defined(CRTSTUFFT_O) \ + && (defined(USE_EH_FRAME_HDR_FOR_STATIC) || !defined(CRTSTUFFT_O)) \ && defined(inhibit_libc) \ && (defined(__GLIBC__) || defined(__gnu_linux__) || defined(__GNU__)) /* On systems using glibc, an inhibit_libc build of libgcc is only