From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Morse Subject: Re: xen/arm: Software Step ARMv8 - PC stuck on instruction Date: Mon, 07 Aug 2017 18:05:36 +0100 Message-ID: <59889DE0.1090708@arm.com> References: <51641005-94fc-2b04-ae49-25e84f3cc56f@arm.com> <5982FEF9.7080007@arm.com> <59831EFC.1080207@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1delUQ-0006pS-5K for xen-devel@lists.xenproject.org; Mon, 07 Aug 2017 17:06:50 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Florian Jakobsmeier Cc: xen-devel , Julien Grall , Stefano Stabellini List-Id: xen-devel@lists.xenproject.org SGkgRmxvcmlhbiwKCk9uIDAzLzA4LzE3IDE3OjAwLCBGbG9yaWFuIEpha29ic21laWVyIHdyb3Rl Ogo+IHJlZ2FyZGluZyB5b3VyIHByZXZpb3VzIG1haWxzLiBJIHdhcyBhYmxlIHRvIHNpbmdsZSBz dGVwIGV2ZXJ5IGluc3RydWN0aW9uCj4gb2YgbXkgbW9kdWxlLiBUaGUgcHJvYmxlbSAob3IgcmF0 aGVyIHRoZSBzb2x1dGlvbikgd2FzIHRvIF9kaXNhYmxlXyB0aGUgSVJRCj4gaW50ZXJydXB0cyBm cm9tIHdpdGhpbiBteSBndWVzdCBtb2R1bGUuIFRoaXMgc29sdmVzIHRoZSBwcm9ibGVtIG9mCj4g c2luZ2xlc3RlcHBpbmcgYSBtb2R1bGUgd2hpY2ggcHJldmlvdXNseSBlbmRlZCBpbiBhIHNwaW5s b2NrLiBCdXQgaXQgZG9lcwo+IG5vdCBzb2x2ZSB0aGUgcHJvYmxlbSB3aXRoIHN5c3RlbSB0aGF0 IGlzIHNpbmdsZXN0ZXBwZWQgd2l0aCBlbmFibGVkIElSUSdzLAo+IGFzIGl0IHN0aWxsIHdpbGwg YmUgbG9ja2VkIHdpdGhpbiBhIHNwaW5sb2NrLgoKSWYgSSB1bmRlcnN0YW5kIGNvcnJlY3RseTog aWYgeW91IHRyeSB0byBzaW5nbGUtc3RlcCBhIHNwaW5sb2NrIHRoZW4geW91IGdldApzdHVjayBp biBhIGxvb3AuIFRoZSBjb2RlIHlvdSB3YW50IHRvIHNpbmdsZS1zdGVwIGRvZXNuJ3QgdGFrZSBh bnkgc3BpbmxvY2tzLApidXQgaWYgeW91IHRha2UgYW4gSVJRLCB0aGUgSVJRIGhhbmRsZXIgZG9l cy4KClsuLi5dCgo+IFRoaXMgaXMgbXkgbW9kdWxlIGNvZGUgd2hpY2ggaXMgZXhlY3V0ZWQgaW4g dGhlIERvbVU6Cj4gCj4gaW50IGluaXRfbW9kdWxlKCkKPj4gewo+PiAgICAgcHJpbnRrKEtFUk5f SU5GTyAiIyMjICAgICBJbml0IGFkZHJlc3MgMHglbHhcbiIsICZpbml0X21vZHVsZSk7Cj4+ICAg ICBwcmludGsoS0VSTl9JTkZPICIgICAgICAgIFNldCBmdW5jdGlvbiBob29rXG4iKTsKPj4gICAg IHBhdGNoX2Z1bmN0aW9uX2hvb2soKTsKPj4KPj4gICAgIHByaW50ayhLRVJOX0lORk8gIiAgICAg ICAgU3RhcnRpbmcgc2luZ2xlc3RlcFxuIik7Cj4gCj4+ICAgICBsb2NhbF9pcnFfZGlzYWJsZSgp Owo+PiAgICAgX19hc21fXyBfX3ZvbGF0aWxlX18gKCJTTUMgMSIpOwo+PiAgICAgX19hc21fXyBf X3ZvbGF0aWxlX18gKCJTTUMgMSIpOwoKKEJhY2stdG8tYmFjayBTTUNzLCB0aGlzIGV4cGxhaW5z IHdoeSBJIHRob3VnaHQgeW91IHdlcmUgbWlzc2luZyB0aGUgUEMtYWR2YW5jZQpsb2dpYykuCgoK Pj4gICAgIGlmKCFhbHJlYWR5X3RyYXBwZWQpCj4+ICAgICB7Cj4+ICAgICAgICAgX19hc21fXyBf X3ZvbGF0aWxlX18gKCJOT1AiKTsKPj4gICAgICAgICBfX2FzbV9fIF9fdm9sYXRpbGVfXyAoIk5P UCIpOwo+PiAgICAgICAgIF9fYXNtX18gX192b2xhdGlsZV9fICgiTk9QIik7Cj4+Cj4+ICAgICAg ICAgLy9KdXN0IGZvciBrZWVwaW5nIG1vZHVsZSBidXN5IHdoaWxlIHNpbmdsZXN0ZXAKPj4gICAg ICAgICBmb3IgKCBjID0gMCA7IGMgPCBuIDsgYysrICkKPj4KPiBXaGVuIGV4ZWN1dGluZyB0aGVz ZSBleGFjdCBzdGVwcywgaXQgaXMgcG9zc2libGUgdG8gc2luZ2xlc3RlcCB0aGUgd2hvbGUKPiBt b2R1bGUuIFdpdGhvdXQgdGhlIGxvY2FsX2lycV9kaXNhYmxlKCkgdGhlIHN5c3RlbSB3aWxsIHN0 b3AgdGhlIG1vZHVsZQo+IGV4ZWN1dGlvbiByaWdodCBhZnRlciB0aGUgZmlyc3QgU01DLgoKV2hh dCBkbyB5b3UgbWVhbiBieSAnc3RvcCc/IE9wdGlvbnMgYXJlOgpGYWlsIHRvIG1ha2UgcHJvZ3Jl c3MgYnkgdGFraW5nIElSUXMgYWxsIHRoZSB0aW1lIGluc3RlYWQ/CkZhaWwgdG8gbWFrZSBwcm9n cmVzcywgaW5zdGVhZCB0YWtpbmcgYSBzaW5nbGUgc3RlcCBleGNlcHRpb24gb24gdGhlIHNhbWUK aW5zdHJ1Y3Rpb24gZm9yZXZlci4KKG9yIHNvbWV0aGluZyBlbHNlKQoKWy4uLl0KCj4gQnV0OiBJ dCdzIG5vdCBwb3NzaWJsZSB0byBzaW5nbGVzdGVwIGEgc3lzdGVtIGFzIGxvbmcgYXMgdGhlIFZN IElSUSdzIGFyZQo+IGVuYWJsZWQuIElmIHdlIHdvdWxkIGFjdGl2YXRlIHNpbmdsZSBzdGVwcGlu ZyB3aXRoIGVuYWJsZWQgaW50ZXJydXB0cywgd2UKPiB3aWxsIGJlIGxvY2tlZCBpbiB0aGUgbWVu dGlvbmVkIHNwaW5sb2NrLgo+IEJlY2F1c2Ugb2YgdGhpcyBpdCBpcyBub3QgcG9zc2libGUgdG8g c2luZ2xlc3RlcCBvdGhlciBhcHBsaWNhdGlvbi4KPiBBZGRpdGlvbmFsbHkgaXQgaXMgbm90IHBv c3NpYmxlIHRvIHByaW50IGFueXRoaW5nIHdoaWxlIHNpbmdsZXN0ZXBwaW5nCj4gYmVjYXVzZSwg YXMgZmFyIGFzIEkgdW5kZXJzdG9vZCwgdGhlIHN5c3RlbSB3aWxsIHdhaXQgd2l0aGluIGEgc3Bp bmxvY2sKPiB1bnRpbCB0aGUgdGVybWluYWwgaXMgZnJlZSB0byBwcmludC4KPgo+IERvIHlvdSBo YXZlIGFueSBpZGVhIHdoeSBpdCdzIG5vdCBwb3NzaWJsZSB0byBlc2NhcGUgdGhlIGxvY2sgd2hp bGUKPiBzaW5nbGVzdGVwcGluZz8gTGlrZSBJIG1lbnRpb25lZCwgbXkgZ3Vlc3MgaXMgb24gdGlt ZXIgaW50ZXJydXB0cywgd2hpY2gKPiBzaG91bGQgdW5sb2NrIHRoZSBzcGlubG9jayBidXQgZ2Vu ZXJhdGUgcHJvYmxlbXMgd2l0aCBzaW5nbGVzdGVwIGVuYWJsZWQgYXQKPiB0aGUgc2FtZSB0aW1l LiBUaGlzIHdvdWxkIGFsc28gZXhwbGFpbiB3aHkgaSBjYW4gb2JzZXJ2ZSB0aGUgY29udHJvbCBm bG93Cj4gb2YgbXkgZ3Vlc3QgbW9kdWxlIHdpdGggSVJRJ3MgYmVpbmcgZGlzYWJsZWQuCgpJIHN1 c3BlY3QgeW91IGFyZSB0cnlpbmcgdG8gc2luZ2xlLXN0ZXAgTGludXgncyBzcGlubG9ja3Mgd2hp Y2ggdXNlCmxvYWQtZXhjbHVzaXZlL3N0b3JlLWV4Y2x1c2l2ZS4gKFRoZXJlIGlzIGFuIGFubm90 YXRlZCBleGFtcGxlIGluIHRoZSBBUk0tQVJNCidLOS4zLjEgQWNxdWlyaW5nIGEgbG9jaycpLgpM REFYUiBzZXRzIHRoZSAnZXhjbHVzaXZlIG1vbml0b3InIGFuZCBTVFhSIG9ubHkgc3VjY2VlZHMg aWYgdGhlIGV4Y2x1c2l2ZQptb25pdG9yIGlzIHN0aWxsIHNldC4gSWYgYW5vdGhlciBDUFUgYWNj ZXNzZXMgdGhlIG1lbW9yeSBwcm90ZWN0ZWQgYnkgdGhlCmV4Y2x1c2l2ZSBtb25pdG9yLCB0aGUg bW9uaXRvciBpcyBjbGVhcmVkLiBUaGlzIGlzIGhvdyB0aGUgc3BpbmxvY2sgY29kZSBrbm93cwpp dCBoYXMgdG8gcmUtcmVhZCBpdHMgdmFsdWUgYW5kIHRyeSB0byB0YWtlIHRoZSBsb2NrIGFnYWlu LgpDaGFuZ2luZyBleGNlcHRpb24gbGV2ZWwgYWxzbyBjbGVhcnMgdGhlIGV4Y2x1c2l2ZSBtb25p dG9yLCBzbyB0YWtpbmcKc2luZ2xlLXN0ZXAgZXhjZXB0aW9uIGJldHdlZW4gYSBMREFYUi9TVFhS IHBhaXIgbWVhbnMgdGhlIGxvb3AgaGFzIHRvIGJlIHJldHJpZWQuCgpJZGVhbGx5LCB5b3Ugc2hv dWxkIGF2b2lkIHNpbmdsZS1zdGVwcGluZyBhdG9taWMgaW5zdHJ1Y3Rpb24gc2VxdWVuY2VzLCBh cyB0aGUKc2luZ2xlLXN0ZXAgbWVjaGFuaXNtIGhhcyBtYWRlIHRoZW0gaW4tYXRvbWljLCB0aGUg Q1BVIGRldGVjdHMgdGhpcyBhbmQgdGhlIGNvZGUKdGhlbiByZXRyaWVzLgoKQXMgYSB3b3JrYXJv dW5kIChmb3IganVzdCB0aGUgY2FzZSB5b3UgYXJlIGxvb2tpbmcgYXQpLCB5b3UgY291bGQgYXNr IFhlbidzIHZnaWMKdG8gZW1wdHkgdGhlIExSIHJlZ2lzdGVycyBzbyB0aGF0IHRoZXJlIGFyZSBu byBwZW5kaW5nIGd1ZXN0IGludGVycnVwdHMsIGJ1dAp0aGlzIGRvZXNuJ3QgZ3VhcmFudGVlIHlv dSBkb24ndCB0cnkgYW5kIHNpbmdsZS1zdGVwIGF0b21pYyBjb2RlLgoKClRoZSBiZXN0IHdheSB0 byBmaXggdGhpcyBpcyBmb3IgWGVuIHRvIGVtdWxhdGUgdGhlIGxvYWQvc3RvcmUgZXhjbHVzaXZl cy4gWW91CndpbGwgbmVlZCB0byBlbnN1cmUgdGhhdCBubyBvdGhlciB2Y3B1IGZvciB0aGF0IGRv bWFpbiBpcyBydW5uaW5nIGJldHdlZW4gdGhlCmxvYWQgYW5kIHN0b3JlLiAoVGhpcyBzdG9wcyB0 aGVtIGZyb20gbW9kaWZ5aW5nIHRoZSBwcm90ZWN0ZWQgdmFsdWUsIGFuZCBtZWFucwp0aGV5IG11 c3QgcmV0cnkgdGhlaXIgb3duIGxvYWQvc3RvcmUgZXhjbHVzaXZlcyBpZiB0aGV5IHdlcmUgaW4g dGhlIHNhbWUgY29kZSkuCgpZb3UgYWxzbyBoYXZlIHRoZSBwcm9ibGVtIHRoYXQgYW5vdGhlciB2 Y3B1IG1heSBiZSBob2xkaW5nIHRoZSBsb2NrLCBzbyBpZiB0aGUKc2luZ2xlLXN0ZXBwZWQgdmNw dSBpcyBub3QgbWFraW5nIHByb2dyZXNzIHdpdGggdGhlIGVtdWxhdGVkLWFuZC1zaW5nbGUtc3Rl cHBlZApzZXF1ZW5jZSwgeW91IHNob3VsZCBydW4gZWFjaCBvdGhlciB2Y3B1IGluIHRoZSBkb21h aW4gdG8gc2VlIGlmIHRoZXkgcmVsZWFzZQp0aGUgbG9jay4KCkxpbnV4IGVudGVycyBhIGxvdy1w b3dlciBzdGF0ZSBieSBpc3N1aW5nIGEgJ3dmZScgZnJvbSB0aGUgd2FpdGluZyBDUFUgYW5kIGEK J3NldicgZnJvbSB0aGUgcmVsZWFzaW5nIENQVSwgeW91IG1heSBlbmQgdXAgdHJhcHBpbmcgdGhl c2UgYXMgeW91IHRyeSBhbmQgc3RlcAp0aGVtLgoKVGhpcyBpcyBnb2luZyB0byBiZSB0cmlja3kg dG8gZ2V0IHJpZ2h0LCBJJ20gbm90IGF3YXJlIG9mIGFueXRoaW5nIHRoYXQgYWxsb3dzCnNpbmds ZS1zdGVwcGluZyBvZiBhdG9taWMgcmVnaW9ucyBsaWtlIHRoaXMgdG9kYXkuCgoKVGhhbmtzLAoK SmFtZXMKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhl bi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cHM6Ly9saXN0 cy54ZW4ub3JnL3hlbi1kZXZlbAo=