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d4943ce939
This addresses a long-standing problem where a work-around for an unwinder issue (also a regression) regresses other functionality. The patch replaces several work-arounds with a fix for PR80556 and a work-around for PR88590. * The fix for PR80556 requires a bump to the SO name for libgcc_s, since we need to remove the unwinder symbols from it. This would trigger PR88590 hence the work-around for that. * We weaken the symbols for emulated TLS support so that it is possible for a DSO linked with static-libgcc to interoperate with a DSO linked with libgcc_s. Likewise main exes. * We remove all the gcc-4.2.1 era stubs machinery and workarounds. * libgcc is always now linked ahead of libc, which avoids fails where the libc (libSystem) builtins implementations are not up to date. * The unwinder now always comes from the system - for Darwin9 from /usr/lib/libgcc_s.1.dylib - for Darwin10 from /usr/lib/libSystem.dylib - for Darwin11+ from /usr/lib/system/libunwind.dylib. We still insert a shim on Darwin10 to fix an omitted unwind function, but the underlying unwinder remains the system one. * The work-around for PR88590 has two parts (1) we always link libgcc from its convenience lib on affected system versions (avoiding the need to find the DSO path); (2) we add and export the emutls functions from DSOs - this makes a relatively small (20k) addition to a DSO. These can be backed out when a proper fix for PR88590 is committed. For distributions that wish to install a libgcc_s.1.dylib to satisfy linkage from exes that linked against the stubs can use a reexported libgcc_s.1.1 (since that contains all the symbols that were previously exported via the stubs). Signed-off-by: Iain Sandoe <iain@sandoe.co.uk> gcc/ChangeLog: PR target/80556 * config/darwin-driver.c (darwin_driver_init): Handle exported symbols and symbol lists (suppress automatic export of the TLS symbols). * config/darwin.c (darwin_rename_builtins): Remove workaround. * config/darwin.h (LINK_GCC_C_SEQUENCE_SPEC): Likewise. (REAL_LIBGCC_SPEC): Handle revised library uses. * config/darwin.opt (nodefaultexport): New. * config/i386/darwin.h (PR80556_WORKAROUND): Remove. * config/i386/darwin32-biarch.h (PR80556_WORKAROUND): Likewise. * config/i386/darwin64-biarch.h (PR80556_WORKAROUND): Likewise. libgcc/ChangeLog: * config.host: Add weak emutls crt to the extra_parts. * config/i386/darwin-lib.h (DECLARE_LIBRARY_RENAMES): Remove workaround. * config/libgcc-libsystem.ver: Add exclude list for the system- provided unwinder. * config/t-slibgcc-darwin: Bump SO version, remove stubs code. * config/i386/libgcc-darwin.10.4.ver: Removed. * config/i386/libgcc-darwin.10.5.ver: Removed. * config/rs6000/libgcc-darwin.10.4.ver: Removed. * config/rs6000/libgcc-darwin.10.5.ver: Removed. * config/t-darwin-noeh: New file. gcc/testsuite/ChangeLog: * gcc.dg/torture/fp-int-convert-timode-3.c: Remove XFAIL. * gcc.dg/torture/fp-int-convert-timode-4.c: Likewise. |
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| aarch64 | ||
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| epiphany | ||
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| score | ||
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| vax | ||
| visium | ||
| vms | ||
| xtensa | ||
| darwin10-unwind-find-enc-func.c | ||
| darwin-64.c | ||
| darwin-crt3.c | ||
| darwin-crt-tm.c | ||
| gthr-lynx.h | ||
| gthr-rtems.h | ||
| gthr-vxworks-cond.c | ||
| gthr-vxworks-thread.c | ||
| gthr-vxworks-tls.c | ||
| gthr-vxworks.c | ||
| gthr-vxworks.h | ||
| hardfp.c | ||
| libgcc-glibc.ver | ||
| libgcc-libsystem.ver | ||
| no-sfp-machine.h | ||
| no-unwind.h | ||
| t-crtfm | ||
| t-crtstuff-pic | ||
| t-darwin | ||
| t-darwin-noeh | ||
| t-dfprules | ||
| t-eh-dw2-dip | ||
| t-fdpbit | ||
| t-fixedpoint-gnu-prefix | ||
| t-fpbit | ||
| t-freebsd-thread | ||
| t-gnu-prefix | ||
| t-gthr-noweak | ||
| t-gthr-vxworks | ||
| t-gthr-vxworksae | ||
| t-hardfp | ||
| t-hardfp-sfdf | ||
| t-libgcc-pic | ||
| t-libunwind | ||
| t-libunwind-elf | ||
| t-linux | ||
| t-openbsd-thread | ||
| t-rtems | ||
| t-slibgcc | ||
| t-slibgcc-darwin | ||
| t-slibgcc-elf-ver | ||
| t-slibgcc-fuchsia | ||
| t-slibgcc-gld | ||
| t-slibgcc-gld-nover | ||
| t-slibgcc-hpux | ||
| t-slibgcc-libgcc | ||
| t-slibgcc-nolc-override | ||
| t-slibgcc-sld | ||
| t-slibgcc-vms | ||
| t-softfp | ||
| t-softfp-compat | ||
| t-softfp-excl | ||
| t-softfp-sfdf | ||
| t-softfp-sfdftf | ||
| t-softfp-tf | ||
| t-stack | ||
| t-tls | ||
| t-vxcrtstuff | ||
| t-vxworks | ||
| t-vxworks7 | ||
| t-vxworksae | ||
| unwind-dw2-fde-darwin.c | ||
| vxcrtstuff.c | ||