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* Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout optioncygwin-2_5_2-releaseCorinna Vinschen2016-06-231-3/+0
| | | | | | | | | | | | | | Bump GPLv2+ to GPLv3+ for some files, clarify BSD 2-clause. Everything else stays under GPLv3+. New Linking Exception exempts resulting executables from LGPLv3 section 4. Add CONTRIBUTORS file to keep track of licensing. Remove 'Copyright Red Hat Inc' comments. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* x86_64: Handle myfault exceptions when running on alternate signal stackCorinna Vinschen2015-07-071-0/+2
| | | | | | | | | | | | | | | | | | x86_64 only: * cygtls.cc (san::leave): Restore _my_tls.andreas. * cygtls.h (class san): Add _clemente as in 32 bit case. Add ret and frame members. (san::san): Handle _my_tls.andreas as on 32 bit. Take parameter and write it to new member ret. Store current stack pointer in frame. (san::~san): New destructor to restore _my_tls.andreas. (__try): Use __l_except address as parameter to san::san. * dcrt0.cc (dll_crt0_0): Add myfault_altstack_handler as vectored continuation handler. * exception.h (myfault_altstack_handler): Declare. * exceptions.cc (myfault_altstack_handler): New function. Explain what it's good for. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Add cygwin_internal() operation to retrieve the EXCEPTION_RECORD from a ↵Jon TURNEY2015-04-231-0/+1
| | | | | | | | | | | siginfo_t * * external.cc (cygwin_internal): Add operation to retrieve a copy of the EXCEPTION_RECORD from a siginfo_t *. * include/sys/cygwin.h (cygwin_getinfo_types): Ditto. * exception.h (cygwin_exception): Add exception_record accessor. Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
* * exception.h (class exception): Remove unnecessary #ifdef.Corinna Vinschen2014-09-051-4/+2
| | | | | | | | * uinfo.cc (client_request_pwdgrp::client_request_pwdgrp): Fix length counter to include trailing NUL. * sec_auth.cc (get_user_groups): Add experimental exception handler. (get_user_local_groups): Ditto.
* * Throughout, use __try/__except/__endtry blocks, rather than myfaultCorinna Vinschen2014-08-221-50/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | handler. * cygtls.cc (_cygtls::remove): Accommodate the fact that pathbufs has been moved from _local_storage to _cygtls. * cygtls.h (class tls_pathbuf): Add comment to hint to gendef usage of counters. Change type of counters to uint32_t for clarity. Remove _cygtls as friend class. (struct _local_storage): Move pathbufs from here... (struct _cygtls): ...to here, allowing to access it from _sigbe. (class san): Only define on 32 bit. Remove errno, _c_cnt and _w_cnt members. (san::setup): Drop parameter. Don't initialize removed members. (san::leave): Don't set removed members. (class myfault): Only define on 32 bit. (myfault::faulted): Only keep implementation not taking any parameter. Drop argument in call to sebastian.setup. (__try/__leave/__except/__endtry): Implement to support real SEH. For now stick to SJLJ on 32 bit. * dcrt0.cc (dll_crt0_0): Drop 64 bit call to exception::install_myfault_handler. * exception.h (exception_handler): Define with EXCEPTION_DISPOSITION as return type. (PDISPATCHER_CONTEXT): Define as void * on 32 bit. Define as pointer to _DISPATCHER_CONTEXT on 64 bit. (class exception): Define separately for 32 and 64 bit. (exception::myfault): Add handler for myfault SEH handling on 64 bit. (exception::exception): Fix mangled method name to account for change in type of last parameter. (exception::install_myfault_handler): Remove. * exceptions.cc (exception::myfault_handle): Remove. (exception::myfault): New SEH handler for 64 bit. * gendef (_sigbe): Set tls_pathbuf counters to 0 explicitely when returning to the caller. * ntdll.h: Move a comment to a better place. (struct _SCOPE_TABLE): Define on 64 bit. * thread.cc (verifyable_object_isvalid): Remove gcc 4.7 workaround. * tls_pbuf.cc (tls_pbuf): Fix to accommodate new place of pathbufs. (tls_pathbuf::destroy): Change type of loop variables to uint32_t. * tls_pbuf.h (class tmp_pathbuf): Change type of buffer counters to uint32_t. Accommodate new place of pathbufs. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
* * dcrt0.cc (dll_crt0_0): Install myfault exception handler on x86_64.Corinna Vinschen2014-03-281-11/+52
| | | | | | | | | | | | | | | | | | | | | | * exception.h (exception_list): Typedef as void on x86_64. (exception::handler_installed): Remove. (exception::handle_while_being_debugged): Remove. (exception::myfault_handle): Declare for x86_64. (exception::handle): Declare as ordinary exception handler on x86_64 as well. (exception::exception): Drop previous code (again). Install exception::handle as SEH handler. (exception::install_myfault_handler): New x86_64-only method to install exception::myfault_handle as VEH handler. Explain why. (exception::~exception): For x86_64, define frame end label (again). * exceptions.cc (CYG_EXC_CONTINUE_EXECUTION): Drop definition. (CYG_EXC_CONTINUE_SEARCH): Ditto. (exception::myfault_handle): New x86_64-only method, VEH handler to handle myfault exceptions. (exception::handle): Define as ordinary exception handler on x86_64 as well. Use ExceptionContinueExecution and ExceptionContinueSearch throughout instead of deleted Cygwin macros. Don't handle myfault exceptions on x86_64.
* * exception.h (exception::handle_while_being_debugged): Declare.Corinna Vinschen2014-03-191-1/+3
| | | | | (exception::exception): Install unhandled exception filter. * exceptions.cc (exception::handle_while_being_debugged): New method.
* Partially revert patch from 2014-03-04.Corinna Vinschen2014-03-181-17/+7
| | | | | | | * exception.h (exception::handler_installed): Declare. (exception::exception): Install vectored exception handler on x86_64. (exception::~exception): Remove for x86_64. * exceptions.cc (exception::handler_installed): Define.
* * exception.h (exception::handler_installed): Remove.Corinna Vinschen2014-03-041-12/+17
| | | | | | | (exception::exception): Remove old code. Manually install SEH handler instead. (exception::~exception): For x86_64, define frame end label. * exceptions.cc (exception::handler_installed): Remove.
* * exception.h (exception::exception): Install vectored exceptionCorinna Vinschen2014-03-031-1/+1
| | | | handler rather than vectored continue handler.
* * exceptions.h (cygwin_exception::open_stackdumpfile): Move old function intoChristopher Faylor2014-01-081-2/+4
| | | | | | | | | class. (cygwin_exception::h): New member. (cygwin_exception::cygwin_exception): Initialize h to NULL. * exceptions.cc (cygwin_exception::open_stackdumpfile): Move into cygwin_exception class. Use 'h' class member. (cygwin_exception::dumpstack): Close stack dump file handle if opened.
* * exception.h: Fold in content of include/exceptions.h.Corinna Vinschen2013-10-271-7/+99
| | | | * include/exceptions.h: Remove.
* * exception.h (_exception_list): Drop redefinition for x86_64.Corinna Vinschen2013-10-261-4/+0
| | | | | * include/exceptions.h: Disable content for x86_64 since it's not using frame based exception handling anymore.
* * Merge in cygwin-64bit-branch.Corinna Vinschen2013-04-231-3/+29
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* * cygtls.h (_cygtls::signal_exit): Delete from class.Christopher Faylor2013-01-021-7/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * exception.h (cygwin_exception): New class. (cygwin_exception::dumpstack): Declare new function. (cygwin_exception::context): Ditto. (cygwin_exception::dump_exception): Ditto. * exceptions.cc (cygwin_exception::dump_exception): Move into cygwin_exception class. Accommodate new variable names. (cygwin_exception::dumpstack): Ditto stackdump -> dumpstack. (exception::handle): Move andreas processing earlier. Defer signal processing decisions to the signal thread where they belong. Pass exception information to sig_send via new siginfo_t si_cyg field. (ctrl_c_handler): Wait for SIGHUP signal to be processed since it could cause a process exit and we don't want races with thread exit lock. (signal_exit): Move back here from sigproc.cc. Modify arguments and remove from sigpacket class. Decide when to dump core based on signal type. (sigpacket::process): Handle exiting signals in context of threads rather than in the signal thread. Signal debugger on non-Windows signals. Remove setup_signal_exit call. * sigproc.cc (no_signals_available): Remove argument. (signal_exit_code): Delete. (close_my_readsig): Ditto. (_cygtls::signal_exit): Move to exceptions.cc. (sigproc_terminate): Don't attempt to terminate signal thread. (setup_signal_exit): Delete. (exit_thread): Use new si_cyg entry in siginfo_t. (sig_send): Just use empty initializer for si. Accommodate change in no_signals_available argument. (wait_sig): Remove attempt to "go asynchronous" on process exit. Delete __SIGEXIT handling. Don't ever exit. * sigproc.h: Remove __SIGEXIT from signal enum. Renumber. * include/cygwin/signal.h (siginfo_t): Add si_cyg entry.
* * exception.h (stackdump): Declare.Christopher Faylor2012-02-121-4/+8
| | | | | | | * exceptions.cc (stackdump): Rework to perform all operations needed for a stackdump and to avoid recursion. (exception::handle): Use simplified stackdump interface. * sigproc.cc (signal::exit): Ditto. Delete now, uneeded declaration.
* * exception.h: Remove DEBUG_EXCEPTION left over debugging ifdef.Christopher Faylor2011-02-091-6/+1
| | | | * dll_init.cc: Fix typo in comment.
* * exception.h: Fix copyright.Christopher Faylor2010-03-011-1/+1
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* Fix/delete inaccurate comments.Christopher Faylor2010-03-011-1/+1
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* Update some copyrights.Christopher Faylor2010-02-281-0/+38
* cygtls.cc (_cygtls::call): Invoke new exception protection here. (_cygtls::init_thread): Remove conditionalized exception handler setup. (exception_list): Delete declaration. (_cygtls::init_exception_handler): Delete obsolete function. * cygtls.h: Remove (now) unneeded include. (_cygtls): Make this a real C++ class. (_cygtls::handle_exceptions): Remove. (_cygtls::init_exception_handler): Remove. (_cygtls::call2): Make private. (myfault::faulted): Remove unneeded parentheses. * dcrt0.cc (dll_crt0_1): Remove exception handler setup. * dlfcn.cc (dlopen): Ditto. (dlclose): Ditto. * dll_init.cc (dll_dllcrt0_1): Ditto. (dll_list::detach): Use new exception handler protection. * exceptions.cc (dump_exception): Rename to prevent confusion with new class. (exception::handle): Rename from _cygtls::handle_exceptions. Accommodate new exception class. Accommodate rename to dump_exception. * tlsoffsets.h: Regenerate.