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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| .. | ||
| _dd_to_kf.c | ||
| _divkc3.c | ||
| _kf_to_dd.c | ||
| _kf_to_sd.c | ||
| _kf_to_td.c | ||
| _mulkc3.c | ||
| _powikf2.c | ||
| _sd_to_kf.c | ||
| _td_to_kf.c | ||
| aix-unwind.h | ||
| aixinitfini.c | ||
| atexit.c | ||
| crtcxa.c | ||
| crtdbase.S | ||
| crtresfpr.S | ||
| crtresgpr.S | ||
| crtrestvr.S | ||
| crtresxfpr.S | ||
| crtresxgpr.S | ||
| crtsavevr.S | ||
| crtsavfpr.S | ||
| crtsavgpr.S | ||
| cxa_atexit.c | ||
| cxa_finalize.c | ||
| darwin-asm.h | ||
| darwin-crt2.c | ||
| darwin-fallback.c | ||
| darwin-fpsave.S | ||
| darwin-gpsave.S | ||
| darwin-tramp.S | ||
| darwin-unwind.h | ||
| darwin-vecsave.S | ||
| darwin-world.S | ||
| e500crtres32gpr.S | ||
| e500crtres64gpr.S | ||
| e500crtres64gprctr.S | ||
| e500crtrest32gpr.S | ||
| e500crtrest64gpr.S | ||
| e500crtresx32gpr.S | ||
| e500crtresx64gpr.S | ||
| e500crtsav32gpr.S | ||
| e500crtsav64gpr.S | ||
| e500crtsav64gprctr.S | ||
| e500crtsavg32gpr.S | ||
| e500crtsavg64gpr.S | ||
| e500crtsavg64gprctr.S | ||
| eabi-ci.S | ||
| eabi-cn.S | ||
| eabi.S | ||
| exit.h | ||
| extendkftf2-sw.c | ||
| fixkfti-sw.c | ||
| fixunskfti-sw.c | ||
| float128-hw.c | ||
| float128-ifunc.c | ||
| float128-p10.c | ||
| float128-sed | ||
| float128-sed-hw | ||
| floattikf-sw.c | ||
| floatuntikf-sw.c | ||
| freebsd-unwind.h | ||
| gthr-aix.h | ||
| ibm-ldouble-format | ||
| ibm-ldouble.c | ||
| libgcc-aix-cxa.ver | ||
| libgcc-glibc.ver | ||
| libgcc-ibm-ldouble.ver | ||
| linux-unwind.h | ||
| morestack.S | ||
| on_exit.c | ||
| quad-float128.h | ||
| sfp-exceptions.c | ||
| sfp-machine.h | ||
| sol-ci.S | ||
| sol-cn.S | ||
| t-aix-cxa | ||
| t-crtstuff | ||
| t-darwin | ||
| t-darwin64 | ||
| t-e500v1-fp | ||
| t-e500v2-fp | ||
| t-float128 | ||
| t-float128-hw | ||
| t-float128-p10-hw | ||
| t-freebsd | ||
| t-freebsd64 | ||
| t-ibm-ldouble | ||
| t-linux | ||
| t-lynx | ||
| t-netbsd | ||
| t-ppc64-fp | ||
| t-ppccomm | ||
| t-savresfgpr | ||
| t-slibgcc-aix | ||
| t-stack-rs6000 | ||
| tramp.S | ||
| trunctfkf2-sw.c | ||