9a4d574b8d
* Makefile.in (DLL_OFILES): Add sigfe.o. Remove reliance on cygwin.def from cygwin0.dll dependency since dependence on sigfe.o implies that. Generate def file on the fly using 'gendef'. * configure.in: Don't auto-generate cygwin.def. * configure: Regenerate. * cygwin.din: Add SIGFE stuff where appropriate. * dcrt0.cc (dll_crt0_1): Initialize cygwin tls early in process startup. Set _main_tls to address of the main thread's cygwin tls. * debug.h: Remove now unneeded WFSO and WFMO declarations. * exceptions.cc (_last_thread): Define. (set_thread_state_for_signals): New function. (reset_thread_exception_for_signals): Ditto. (init_thread_for_signals): Ditto. (delete_thread_for_signals): Ditto. (capture_thread_for_signals): Ditto. (handle_exceptions): Set return address explicitly for exceptions prior to calling sig_send. (interrupt_on_return): Eliminate. (setup_handler): Add preliminary implementation for dealing with thread-specific signals by querying _main_tls. (signal_exit): Use cygthread::main_thread_id instead of mainthread.id. (call_signal_handler_now): For now, just handle the main thread. * fork.cc (vfork): Save and restore main _my_tls. * gendef: New file. Generates def file and sigfe.s file. * gentls_offsets: New file. Generates offsets for perl to use in sigfe.s. * how-signals-work.txt: Mention that info is obsolete. * init.cc (dll_entry): Initialize cygwin tls storage here. * miscfuncs.cc (low_priority_sleep): Make a C function for easier calling from asm. * perthread.h (vfork_save::tls): New element. * signal.cc (nanosleep): Replace previous use of sigframe.call_signal_handler_now with straight call to call_signal_handler_now. (abort): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * sigproc.cc (sig_dispatch_pending): Ditto. (sig_send): Ditto. * sigproc.h: Declare call_signal_handler_now. * thread.cc (pthread::thread_init_wrapper): Initialize cygwin tls. Remove obsolete and unworking signal stuff. * thread.h (verifyable_object::sigs): Eliminate. (verifyable_object::sigmask): Eliminate. (verifyable_object::sigtodo): Eliminate. (verifyable_object::exit): Make attribute noreturn. (verifyable_object::thread_init_wrapper): Ditto. (pthread_null::exit): Ditto. * winbase.h (__stackbase): Always define. * winsup.h (low_priority_sleep): Declare as a "C" function. * include/cygwin/version.h: Bump API version to reflect sigwait export. * include/sys/queue.h: Protect SLIST_ENTRY from previous declaration. * signal.cc (sigwait): Implement. * select.cc (fhandler_base::ready_for_read): Add debugging output. * devices.h: Define more device pointers via their storage. * devices.in: Don't parse things like /dev/inet/tcp, as they really have no meaning. * devices.cc: Regenerate. * gendevices: Set proper protection for output file. * cygtls.h: New file. * gendef: New file. * gentls_offsets: New file. * tlsoffsets.h: New file. Autogenerated. * config/i386/longjmp.c: Remove. File subsumed by gendef output. * config/i386/makefrag: Remove obsolete file. * fhandler.cc: Remove spurious access_worker declaration. * spawn.cc (spawnve): Make debugging output more accurate. * cygwin-gperf: Remove. * devices.cc: Remove.
105 lines
2.0 KiB
C
105 lines
2.0 KiB
C
#include_next "winbase.h"
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#ifndef _WINBASE2_H
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#define _WINBASE2_H
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extern __inline__ long
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ilockincr (long *m)
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{
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register int __res;
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__asm__ __volatile__ ("\n\
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movl $1,%0\n\
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lock xadd %0,(%1)\n\
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inc %0\n\
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": "=a" (__res), "=q" (m): "1" (m));
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return __res;
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}
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extern __inline__ long
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ilockdecr (long *m)
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{
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register int __res;
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__asm__ __volatile__ ("\n\
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movl $0xffffffff,%0\n\
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lock xadd %0,(%1)\n\
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dec %0\n\
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": "=a" (__res), "=q" (m): "1" (m));
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return __res;
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}
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extern __inline__ long
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ilockexch (long *t, long v)
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{
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register int __res;
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__asm__ __volatile__ ("\n\
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1: lock cmpxchgl %3,(%1)\n\
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jne 1b\n\
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": "=a" (__res), "=q" (t): "1" (t), "q" (v), "0" (*t));
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return __res;
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}
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extern __inline__ long
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ilockcmpexch (long *t, long v, long c)
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{
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register int __res;
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__asm__ __volatile__ ("\n\
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lock cmpxchgl %3,(%1)\n\
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": "=a" (__res), "=q" (t) : "1" (t), "q" (v), "0" (c));
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return __res;
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}
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#undef InterlockedIncrement
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#define InterlockedIncrement ilockincr
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#undef InterlockedDecrement
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#define InterlockedDecrement ilockdecr
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#undef InterlockedExchange
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#define InterlockedExchange ilockexch
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#undef InterlockedCompareExchange
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#define InterlockedCompareExchange ilockcmpexch
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// extern char * volatile *__stackbase __asm__ ("%fs:4");
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#ifndef EXPCGf
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#define DECLARE_TLS_STORAGE do {} while (0)
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#else
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#define DECLARE_TLS_STORAGE char **tls[4096] __attribute__ ((unused))
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extern long tls_ix;
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extern __inline__ DWORD
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my_tlsalloc ()
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{
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DWORD n = ilockdecr (&tls_ix);
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__stackbase[tls_ix] = NULL;
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return n;
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}
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extern __inline__ BOOL
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my_tlssetvalue (DWORD ix, void *val)
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{
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__stackbase[ix] = (char *) val;
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return 1;
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}
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extern __inline__ void *
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my_tlsgetvalue (DWORD ix)
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{
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return __stackbase[ix];
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}
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extern __inline__ BOOL
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my_tlsfree (DWORD ix)
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{
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/* nothing for now */
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return 1;
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}
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#undef TlsAlloc
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#define TlsAlloc my_tlsalloc
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#undef TlsGetValue
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#define TlsGetValue my_tlsgetvalue
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#undef TlsSetValue
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#define TlsSetValue my_tlssetvalue
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#undef TlsFree
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#define TlsFree my_tlsfree
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#endif /*EXPCGF*/
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#endif /*_WINBASE2_H*/
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