27 #include "user/signal.h"
30 #include "signal-common.h"
33 #include "host-signal.h"
57  * The BSD ABIs use the same signal numbers across all the CPU architectures, so
90 /* Adjust the signal context to rewind out of safe-syscall if we're in it */
103  * Note: The following take advantage of the BSD signal property that all
210          * more specific signal info will set).  in host_to_target_siginfo_noswap()
234          * We have to go based on the signal number now to figure out  in host_to_target_siginfo_noswap()
339      * this will only affect this thread's signal mask. We don't use  in block_signals()
349 /* Returns 1 if given signal should dump core if not handled. */
366 /* Abort execution with signal. */
396          (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) "  in dump_core_and_abort()
401      * The proper exit code for dying from an uncaught signal is  in dump_core_and_abort()
402      * -<signal>.  The kernel doesn't allow exit() or _exit() to pass  in dump_core_and_abort()
404      * actually die from an uncaught signal.  Here the default signal  in dump_core_and_abort()
405      * handler is installed, we send ourself a signal and we wait for  in dump_core_and_abort()
416      * Make sure the signal isn't masked (just reuse the mask inside  in dump_core_and_abort()
427  * Queue a signal so that it will be send to the virtual CPU as soon as
442     /* Signal that a new signal is pending. */  in queue_signal()
469  * Force a synchronously taken QEMU_SI_FAULT signal. For QEMU the
503      * handling wrt signal blocking and unwinding.  in host_signal_handler()
557     /* Get the target signal number. */  in host_signal_handler()
573      * insn and then exit back to the main loop so that the signal  in host_signal_handler()
584      * Block host signals until target signal handler entered. We  in host_signal_handler()
607         /* Save current signal stack params */  in do_sigaltstack()
698         /* Update the host signal state. */  in do_sigaction()
708              *  Note: It is important to update the host kernel signal mask to  in do_sigaction()
781          * if it's too large for this specific signal.  in setup_frame()
827     /* Set the register state back to before the signal. */  in do_sigreturn()
832     /* And reset the signal mask. */  in do_sigreturn()
855     /* Set the signal mask from the host mask. */  in signal_init()
919          * default handler : ignore some signal. The other are job  in handle_pending_signal()
940          * SA_NODEFER indicates that the current signal should not be  in handle_pending_signal()
948          * Save the previous blocked signal state to restore it at the  in handle_pending_signal()
949          * end of the signal execution (see do_sigreturn).  in handle_pending_signal()
1013                  * might have resulted in a new synchronous signal (eg SIGSEGV).  in process_pending_signals()
1021          * us to take another host signal, which will set signal_pending again.  in process_pending_signals()