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2020-02-10arm: Fix up arm installed unwind.h for use in pedantic modes [PR93615]Christophe Lyon1-1/+1
Commit r10-6500-g811a475ea3fcc55ee4aea7c81171891ef19dfc25 broke the GCC build for arm-none-uclinuxfdpiceabi, as it forgot to update some uses of gnu_Unwind_Find_got. 2020-02-10 Christophe Lyon <christophe.lyon@linaro.org> libgcc/ PR target/93615 * unwind-arm-common.inc: Replace uses of gnu_Unwind_Find_got with _Unwind_gnu_Find_got. * unwind-pe.h: Likewise.
2020-01-01Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r279813
2019-09-10[ARM/FDPIC v6 06/24] [ARM] FDPIC: Add support for c++ exceptionsChristophe Lyon1-0/+17
The main difference with existing support is that function addresses are function descriptor addresses instead. This means that all code dealing with function pointers now has to cope with function descriptors instead. For the same reason, Linux kernel helpers can no longer be called by dereferencing their address, so we implement wrappers that directly call the kernel helpers. When restoring a function address, we also have to restore the FDPIC register value (r9). 2019-09-10 Christophe Lyon <christophe.lyon@st.com> Mickaël Guêné <mickael.guene@st.com> gcc/ * ginclude/unwind-arm-common.h (unwinder_cache): Add reserved5 field. libgcc/ * config/arm/linux-atomic.c (__kernel_cmpxchg): Add FDPIC support. (__kernel_dmb): Likewise. (__fdpic_cmpxchg): New function. (__fdpic_dmb): New function. * config/arm/unwind-arm.h (FDPIC_REGNUM): New define. (gnu_Unwind_Find_got): New function. (_Unwind_decode_typeinfo_ptr): Add FDPIC support. * unwind-arm-common.inc (UCB_PR_GOT): New. (funcdesc_t): New struct. (get_eit_entry): Add FDPIC support. (unwind_phase2): Likewise. (unwind_phase2_forced): Likewise. (__gnu_Unwind_RaiseException): Likewise. (__gnu_Unwind_Resume): Likewise. (__gnu_Unwind_Backtrace): Likewise. * unwind-pe.h (read_encoded_value_with_base): Likewise. libstdc++/ * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC support. Co-Authored-By: Mickaël Guêné <mickael.guene@st.com> From-SVN: r275568
2019-01-01Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r267494
2018-12-20C/C++: Add -Waddress-of-packed-memberH.J. Lu1-0/+5
When address of packed member of struct or union is taken, it may result in an unaligned pointer value. This patch adds -Waddress-of-packed-member to check alignment at pointer assignment and warn unaligned address as well as unaligned pointer: $ cat x.i struct pair_t { char c; int i; } __attribute__ ((packed)); extern struct pair_t p; int *addr = &p.i; $ gcc -O2 -S x.i x.i:8:13: warning: taking address of packed member of ‘struct pair_t’ may result in an unaligned pointer value [-Waddress-of-packed-member] 8 | int *addr = &p.i; | ^ $ cat c.i struct B { int i; }; struct C { struct B b; } __attribute__ ((packed)); long* g8 (struct C *p) { return p; } $ gcc -O2 -S c.i -Wno-incompatible-pointer-types c.i: In function ‘g8’: c.i:4:18: warning: converting a packed ‘struct C *’ pointer (alignment 1) to ‘long int *’ (alignment 8) may may result in an unaligned pointer value [-Waddress-of-packed-member] 4 | long* g8 (struct C *p) { return p; } | ^ c.i:2:8: note: defined here 2 | struct C { struct B b; } __attribute__ ((packed)); | ^ $ This warning is enabled by default. Since read_encoded_value_with_base in unwind-pe.h has union unaligned { void *ptr; unsigned u2 __attribute__ ((mode (HI))); unsigned u4 __attribute__ ((mode (SI))); unsigned u8 __attribute__ ((mode (DI))); signed s2 __attribute__ ((mode (HI))); signed s4 __attribute__ ((mode (SI))); signed s8 __attribute__ ((mode (DI))); } __attribute__((__packed__)); _Unwind_Internal_Ptr result; and GCC warns: gcc/libgcc/unwind-pe.h:210:37: warning: taking address of packed member of 'union unaligned' may result in an unaligned pointer value [-Waddress-of-packed-member] result = (_Unwind_Internal_Ptr) u->ptr; ^ we need to add GCC pragma to ignore -Waddress-of-packed-member. gcc/ PR c/51628 * doc/invoke.texi: Document -Wno-address-of-packed-member. gcc/c-family/ PR c/51628 * c-common.h (warn_for_address_or_pointer_of_packed_member): New. * c-warn.c (check_alignment_of_packed_member): New function. (check_address_of_packed_member): Likewise. (check_and_warn_address_of_packed_member): Likewise. (warn_for_address_or_pointer_of_packed_member): Likewise. * c.opt: Add -Wno-address-of-packed-member. gcc/c/ PR c/51628 * c-typeck.c (convert_for_assignment): Call warn_for_address_or_pointer_of_packed_member. gcc/cp/ PR c/51628 * call.c (convert_for_arg_passing): Call warn_for_address_or_pointer_of_packed_member. * typeck.c (convert_for_assignment): Likewise. gcc/testsuite/ PR c/51628 * c-c++-common/pr51628-1.c: New test. * c-c++-common/pr51628-2.c: Likewise. * c-c++-common/pr51628-3.c: Likewise. * c-c++-common/pr51628-4.c: Likewise. * c-c++-common/pr51628-5.c: Likewise. * c-c++-common/pr51628-6.c: Likewise. * c-c++-common/pr51628-7.c: Likewise. * c-c++-common/pr51628-8.c: Likewise. * c-c++-common/pr51628-9.c: Likewise. * c-c++-common/pr51628-10.c: Likewise. * c-c++-common/pr51628-11.c: Likewise. * c-c++-common/pr51628-12.c: Likewise. * c-c++-common/pr51628-13.c: Likewise. * c-c++-common/pr51628-14.c: Likewise. * c-c++-common/pr51628-15.c: Likewise. * c-c++-common/pr51628-26.c: Likewise. * c-c++-common/pr51628-27.c: Likewise. * c-c++-common/pr51628-28.c: Likewise. * c-c++-common/pr51628-29.c: Likewise. * c-c++-common/pr51628-30.c: Likewise. * c-c++-common/pr51628-31.c: Likewise. * c-c++-common/pr51628-32.c: Likewise. * gcc.dg/pr51628-17.c: Likewise. * gcc.dg/pr51628-18.c: Likewise. * gcc.dg/pr51628-19.c: Likewise. * gcc.dg/pr51628-20.c: Likewise. * gcc.dg/pr51628-21.c: Likewise. * gcc.dg/pr51628-22.c: Likewise. * gcc.dg/pr51628-23.c: Likewise. * gcc.dg/pr51628-24.c: Likewise. * gcc.dg/pr51628-25.c: Likewise. * c-c++-common/asan/misalign-1.c: Add -Wno-address-of-packed-member. * c-c++-common/asan/misalign-2.c: Likewise. * c-c++-common/ubsan/align-2.c: Likewise. * c-c++-common/ubsan/align-4.c: Likewise. * c-c++-common/ubsan/align-6.c: Likewise. * c-c++-common/ubsan/align-7.c: Likewise. * c-c++-common/ubsan/align-8.c: Likewise. * c-c++-common/ubsan/align-10.c: Likewise. * g++.dg/ubsan/align-2.C: Likewise. * gcc.target/i386/avx512bw-vmovdqu16-2.c: Likewise. * gcc.target/i386/avx512f-vmovdqu32-2.c: Likewise. * gcc.target/i386/avx512f-vmovdqu64-2.c: Likewise. * gcc.target/i386/avx512vl-vmovdqu16-2.c: Likewise. * gcc.target/i386/avx512vl-vmovdqu32-2.c: Likewise. * gcc.target/i386/avx512vl-vmovdqu64-2.c: Likewise. libgcc/ * unwind-pe.h (read_encoded_value_with_base): Add GCC pragma to ignore -Waddress-of-packed-member. From-SVN: r267313
2018-01-03Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r256169
2017-01-01Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r243994
2016-01-04Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r232055
2015-01-05Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r219188
2014-01-02Update copyright years in libgcc/Richard Sandiford1-1/+1
From-SVN: r206295
2013-02-04Update copyright in libgcc.Richard Sandiford1-1/+1
From-SVN: r195731
2011-08-05Makefile.in (UNWIND_H): Remove.Rainer Orth1-0/+289
gcc: * Makefile.in (UNWIND_H): Remove. (LIB2ADDEH, LIB2ADDEHSTATIC, LIB2ADDEHSHARED): Move to ../libgcc/Makefile.in. (LIBUNWIND, SHLIBUNWIND_LINK, SHLIBUNWIND_INSTALL): Likewise. (LIBUNWINDDEP): Remove. (libgcc-support): Remove LIB2ADDEH, $(srcdir)/emutls.c dependencies. (libgcc.mvars): Remove LIB2ADDEH, LIB2ADDEHSTATIC, LIB2ADDEHSHARED, LIBUNWIND, SHLIBUNWIND_LINK, SHLIBUNWIND_INSTALL. (stmp-int-hdrs): Remove $(UNWIND_H) dependency. Don't copy $(UNWIND_H). * config.gcc (ia64*-*-linux*): Remove with_system_libunwind handling. * configure.ac (GCC_CHECK_UNWIND_GETIPINFO): Remove. * aclocal.m4: Regenerate. * configure: Regenerate. * emutls.c, unwind-c.c, unwind-compat.c, unwind-compat.h, unwind-dw2-fde-compat.c, unwind-dw2-fde-glibc.c, unwind-dw2-fde.c, unwind-dw2-fde.h, unwind-dw2.c, unwind-dw2.h, unwind-generic.h, unwind-pe.h, unwind-sjlj.c, unwind.inc: Move to ../libgcc. * unwind-dw2-fde-darwin.c: Move to ../libgcc/config. * config/arm/libunwind.S, config/arm/pr-support.c, config/arm/unwind-arm.c, config/arm/unwind-arm.h: Move to ../libgcc/config/arm. * config/arm/t-bpabi (UNWIND_H, LIB2ADDEH): Remove. * config/arm/t-symbian (UNWIND_H, LIB2ADDEH): Remove. * config/frv/t-frv ($(T)frvbegin$(objext)): Use $(srcdir)/../libgcc to refer to unwind-dw2-fde.h. ($(T)frvend$(objext)): Likewise. * config/ia64/t-glibc (LIB2ADDEH): Remove. * config/ia64/t-glibc-libunwind: Move to ../libgcc/config/ia64. * config/ia64/fde-glibc.c, config/ia64/fde-vms.c, config/ia64/unwind-ia64.c, config/ia64/unwind-ia64.h: Move to ../libgcc/config/ia64. * config/ia64/t-hpux (LIB2ADDEH): Remove. * config/ia64/t-ia64 (LIB2ADDEH): Remove. * config/ia64/t-vms (LIB2ADDEH): Remove. * config/ia64/vms.h (UNW_IVMS_MODE, MD_UNW_COMPATIBLE_PERSONALITY_P): Remove. * config/picochip/t-picochip (LIB2ADDEH): Remove. * config/rs6000/aix.h (R_LR, MD_FROB_UPDATE_CONTEXT): Remove. * config/rs6000/t-darwin (LIB2ADDEH): Remove. * config/rs6000/darwin-fallback.c: Move to ../libgcc/config/rs6000. * config/sh/t-sh ($(T)unwind-dw2-Os-4-200.o): Use $(srcdir)/../libgcc to refer to unwinder sources. * config/spu/t-spu-elf (LIB2ADDEH): Remove. * config/t-darwin (LIB2ADDEH): Remove. * config/t-freebsd (LIB2ADDEH): Remove. * config/t-libunwind (LIB2ADDEH, LIB2ADDEHSTATIC): Remove. * config/t-libunwind-elf: Move to ../libgcc/config. * config/t-linux (LIB2ADDEH): Remove. * config/t-sol2 (LIB2ADDEH): Remove. * config/xtensa/t-xtensa (LIB2ADDEH): Remove. * system.h (MD_FROB_UPDATE_CONTEXT): Poison. gcc/po: * EXCLUDES (unwind-c.c, unwind-dw2-fde-darwin.c) (unwind-dw2-fde-glibc.c, unwind-dw2-fde.c, unwind-dw2-fde.h) (unwind-dw2.c, unwind-pe.h, unwind-sjlj.c, unwind.h): Remove. libgcc: * Makefile.in (LIB2ADDEH, LIB2ADDEHSTATIC, LIB2ADDEHSHARED): New variables. (LIBUNWIND, SHLIBUNWIND_LINK, SHLIBUNWIND_INSTALL): New variables. (LIB2ADDEH, LIB2ADDEHSTATIC, LIB2ADDEHSHARED): Add $(srcdir)/emutls.c. (install-unwind_h): New target. (all): Depend on it. * config.host (unwind_header): New variable. (*-*-freebsd*): Set tmake_file to t-eh-dw2-dip. (*-*-linux*, frv-*-*linux*, *-*-kfreebsd*-gnu, *-*-knetbsd*-gnu, *-*-gnu*): Likewise, also for *-*-kopensolaris*-gnu. (*-*-solaris2*): Add t-eh-dw2-dip to tmake_file. (arm*-*-linux*): Add arm/t-bpabi for arm*-*-linux-*eabi. Set unwind_header. (arm*-*-uclinux*): Add arm/t-bpabi for arm*-*-uclinux*eabi. Set unwind_header. (arm*-*-eabi*, arm*-*-symbianelf*): Add arm/t-bpabi for arm*-*-eabi*. Add arm/t-symbian to tmake_file for arm*-*-symbianelf*. Set unwind_header. (ia64*-*-elf*): Add ia64/t-eh-ia64 to tmake_file. (ia64*-*-freebsd*): Likewise. (ia64*-*-linux*): Add ia64/t-glibc, ia64/t-eh-ia64, t-libunwind to tmake_file. Add t-libunwind-elf, ia64/t-glibc-libunwind unless $with_system_libunwind. (ia64*-*-hpux*): Set tmake_file. (ia64-hp-*vms*): Add ia64/t-eh-ia64 to tmake_file. (picochip-*-*): Set tmake_file. (rs6000-ibm-aix4.[3456789]*, powerpc-ibm-aix4.[3456789]*): Set md_unwind_header. (rs6000-ibm-aix5.1.*, powerpc-ibm-aix5.1.*): Likewise. (rs6000-ibm-aix[56789].*, powerpc-ibm-aix[56789].*): Likewise. (s390x-ibm-tpf*): Add t-eh-dw2-dip to tmake_file. (xtensa*-*-elf*): Set tmake_file. (xtensa*-*-linux*): Likewise. * configure.ac: Include ../config/unwind_ipinfo.m4. Call GCC_CHECK_UNWIND_GETIPINFO. Link unwind.h to $unwind_header. * configure: Regenerate. * emutls.c, unwind-c.c, unwind-compat.c, unwind-compat.h, unwind-dw2-fde-compat.c, unwind-dw2-fde-dip.c, unwind-dw2-fde.c, unwind-dw2-fde.h, unwind-dw2.c, unwind-dw2.h, unwind-generic.h, unwind-pe.h, unwind-sjlj.c, unwind.inc: New files. * config/unwind-dw2-fde-darwin.c: New file. * config/arm/libunwind.S, config/arm/pr-support.c, config/arm/t-bpabi, config/arm/t-symbian, config/arm/unwind-arm.c, config/arm/unwind-arm.h,: New files. * config/ia64/fde-glibc.c, config/ia64/fde-vms.c, config/ia64/t-eh-ia64, config/ia64/t-glibc, config/ia64/t-glibc-libunwind, config/ia64/t-hpux, config/ia64/t-vms, config/ia64/unwind-ia64.c, config/ia64/unwind-ia64.h: New files. * config/picochip/t-picochip: New file. * config/rs6000/aix-unwind.h, config/rs6000/darwin-fallback.c: New files. * config/rs6000/t-darwin (LIB2ADDEH): Set. * config/s390/t-tpf (LIB2ADDEH): Remove. * config/t-darwin (LIB2ADDEH): Set. * config/t-eh-dw2-dip: New file. * config/t-libunwind, config/t-libunwind-elf: New files. * config/t-sol2 (LIB2ADDEH): Remove. * config/xtensa/t-xtensa: New file. gcc/ada: * gcc-interface/Makefile.in (raise-gcc.o): Search $(srcdir)/../libgcc. libgo: * Makefile.am (AM_CFLAGS): Search $(srcdir)/../libgcc. * Makefile.in: Regenerate. libjava: * configure.ac (GCC_UNWIND_INCLUDE): Rename to LIBGCC_UNWIND_INCLUDE. Point to $(multi_basedir)/./libjava/../libgcc. * configure: Regenerate. * Makefile.am (GCC_UNWIND_INCLUDE): Reflect this. * Makefile.in: Regenerate. libobjc: * Makefile.in (INCLUDES): Search $(srcdir)/$(MULTISRCTOP)../libgcc. libstdc++-v3: * acinclude.m4 (GLIBCXX_EXPORT_INCLUDES): Point TOPLEVEL_INCLUDES to $(toplevel_srcdir)/libgcc. * configure: Regenerate. From-SVN: r177447
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