Examples with GregsPointer com.oracle.svm.core.posix.headers.Signal.GregsPointer used on opensource projects

Example 1 with GregsPointer

use of com.oracle.svm.core.posix.headers.Signal.GregsPointer in project graal by oracle.

the class SubstrateSegfaultHandler method dispatch.

@CEntryPoint
@CEntryPointOptions(prologue = NoPrologue.class, epilogue = NoEpilogue.class, publishAs = Publish.NotPublished, include = CEntryPointOptions.NotIncludedAutomatically.class)
@RestrictHeapAccess(access = RestrictHeapAccess.Access.NO_ALLOCATION, reason = "Must not allocate in segfault signal handler.")
@Uninterruptible(reason = "Must be uninterruptible until it gets immune to safepoints", calleeMustBe = false)
private static void dispatch(int signalNumber, @SuppressWarnings("unused") siginfo_t sigInfo, ucontext_t uContext) {
    if (dispatchInProgress) {
        Log.log().newline().string("[ [ SubstrateSegfaultHandler already handling signal ").signed(signalNumber).string(" ] ]").newline();
        return;
    }
    dispatchInProgress = true;
    VMThreads.StatusSupport.setStatusIgnoreSafepoints();
    Log log = Log.log();
    log.autoflush(true);
    log.string("[ [ SubstrateSegfaultHandler caught signal ").signed(signalNumber).string(" ] ]").newline();
    GregsPointer gregs = uContext.uc_mcontext_gregs();
    long spValue = gregs.read(Signal.GregEnum.REG_RSP.getCValue());
    long ipValue = gregs.read(Signal.GregEnum.REG_RIP.getCValue());
    log.newline().string("General Purpose Register Set Values: ").newline();
    log.indent(true);
    log.string("RAX ").zhex(gregs.read(Signal.GregEnum.REG_RAX.getCValue())).newline();
    log.string("RBX ").zhex(gregs.read(Signal.GregEnum.REG_RBX.getCValue())).newline();
    log.string("RCX ").zhex(gregs.read(Signal.GregEnum.REG_RCX.getCValue())).newline();
    log.string("RDX ").zhex(gregs.read(Signal.GregEnum.REG_RDX.getCValue())).newline();
    log.string("RBP ").zhex(gregs.read(Signal.GregEnum.REG_RBP.getCValue())).newline();
    log.string("RSI ").zhex(gregs.read(Signal.GregEnum.REG_RSI.getCValue())).newline();
    log.string("RDI ").zhex(gregs.read(Signal.GregEnum.REG_RDI.getCValue())).newline();
    log.string("RSP ").zhex(spValue).newline();
    log.string("R8  ").zhex(gregs.read(Signal.GregEnum.REG_R8.getCValue())).newline();
    log.string("R9  ").zhex(gregs.read(Signal.GregEnum.REG_R9.getCValue())).newline();
    log.string("R10 ").zhex(gregs.read(Signal.GregEnum.REG_R10.getCValue())).newline();
    log.string("R11 ").zhex(gregs.read(Signal.GregEnum.REG_R11.getCValue())).newline();
    log.string("R12 ").zhex(gregs.read(Signal.GregEnum.REG_R12.getCValue())).newline();
    log.string("R13 ").zhex(gregs.read(Signal.GregEnum.REG_R13.getCValue())).newline();
    log.string("R14 ").zhex(gregs.read(Signal.GregEnum.REG_R14.getCValue())).newline();
    log.string("R15 ").zhex(gregs.read(Signal.GregEnum.REG_R15.getCValue())).newline();
    log.string("EFL ").zhex(gregs.read(Signal.GregEnum.REG_EFL.getCValue())).newline();
    log.string("RIP ").zhex(ipValue).newline();
    log.indent(false);
    SubstrateUtil.printDiagnostics(log, WordFactory.pointer(spValue), WordFactory.pointer(ipValue));
    log.string("Use runtime option -R:-InstallSegfaultHandler if you don't want to use SubstrateSegfaultHandler.").newline();
    log.newline().string("Bye bye ...").newline().newline();
    LogHandler.get().fatalError();
}