From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 39915 invoked by alias); 14 Oct 2015 06:33:14 -0000 Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org Received: (qmail 39892 invoked by uid 89); 14 Oct 2015 06:33:13 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.1 required=5.0 tests=AWL,BAYES_00,MIME_BASE64_BLANKS,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: eusmtp01.atmel.com Received: from eusmtp01.atmel.com (HELO eusmtp01.atmel.com) (212.144.249.242) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-SHA encrypted) ESMTPS; Wed, 14 Oct 2015 06:33:12 +0000 Received: from apsmtp01.atmel.com (10.168.254.31) by eusmtp01.atmel.com (10.161.101.30) with Microsoft SMTP Server id 14.3.235.1; Wed, 14 Oct 2015 08:33:04 +0200 Received: from PENCHT01.corp.atmel.com (10.168.5.161) by apsmtp01.atmel.com (10.168.254.31) with Microsoft SMTP Server (TLS) id 14.3.235.1; Wed, 14 Oct 2015 14:32:28 +0800 Received: from PENMBX01.corp.atmel.com ([10.168.5.210]) by PENCHT01.corp.atmel.com ([fe80::95df:d3d0:4452:28e3%12]) with mapi id 14.03.0235.001; Wed, 14 Oct 2015 14:32:44 +0800 From: "Sivanupandi, Pitchumani" To: Pierre-Marie de Rodat , "gdb@sourceware.org" CC: Andrew Burgess , "tom@tromey.com" , "uweigand@de.ibm.com" Subject: RE: dynamic array's upper bound evaluated as address for AVR target Date: Wed, 14 Oct 2015 06:33:00 -0000 Message-ID: References: <561D18AD.6080701@adacore.com> In-Reply-To: <561D18AD.6080701@adacore.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-SW-Source: 2015-10/txt/msg00063.txt.bz2 PiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiBGcm9tOiBQaWVycmUt TWFyaWUgZGUgUm9kYXQgW21haWx0bzpkZXJvZGF0QGFkYWNvcmUuY29tXQ0K PiBTZW50OiAxMyBPY3RvYmVyIDIwMTUgMjA6MTQNCj4gVG86IFNpdmFudXBh bmRpLCBQaXRjaHVtYW5pOyBnZGJAc291cmNld2FyZS5vcmcNCj4gQ2M6IEFu ZHJldyBCdXJnZXNzOyB0b21AdHJvbWV5LmNvbTsgdXdlaWdhbmRAZGUuaWJt LmNvbQ0KPiBTdWJqZWN0OiBSZTogZHluYW1pYyBhcnJheSdzIHVwcGVyIGJv dW5kIGV2YWx1YXRlZCBhcyBhZGRyZXNzIGZvciBBVlIgdGFyZ2V0DQo+IA0K PiBQaXRjaHVtYW5pLA0KPiANCj4gKGNoaW1pbmcgaW4gYmVjYXVzZSBJ4oCZ dmUgd29ya2VkIGEgYml0IG9uIERXQVJGIGV4cHJlc3Npb25zIGluIEdEQiwg YnV0DQo+IGRpc2NsYWltZXI6IEnigJltIG5vdCBhIG1haW50YWluZXIgOy0p KQ0KPiANCj4gT24gMTAvMTMvMjAxNSAxMTowNyBBTSwgU2l2YW51cGFuZGks IFBpdGNodW1hbmkgd3JvdGU6DQo+ID4gV2h5IGlzIHRoYXQgbG9jYXRpb24g ZXhwcmVzc2lvbiB0cmVhdGVkIGFzIERXQVJGX1ZBTFVFX01FTU9SWSBieSBk ZWZhdWx0Pw0KPiA+IENhbiBnZGIgZGV0ZWN0IGlmIGxvY2F0aW9uIGV4cHJl c3Npb24gZm9yIGxpdGVyYWwgdmFsdWUgKGUuZy4gYXJyYXkNCj4gPiBib3Vu ZHMpIG9yIG5vdD8NCj4gDQo+IHN0cnVjdCBkd2FyZl9leHByX2NvbnRleHQ6 OmxvY2F0aW9uIGlzIHJlbGV2YW50IG9ubHkgd2hlbiBldmFsdWF0aW5nIERX QVJGDQo+IGV4cHJlc3Npb25zIHdoaWNoIGFyZSBsb2NhdGlvbiBkZXNjcmlw dGlvbnMuIFRoZXNlIGRlc2NyaXB0aW9ucyBnZW5lcmFsbHkNCj4gY29tcHV0 ZSBhZGRyZXNzZXMgZm9yIG9iamVjdHMgYnV0IHRoaXMg4oCcbG9jYXRpb27i gJ0gZmllbGQgbWFrZXMgaXQgcG9zc2libGUgdG8NCj4gZGVzY3JpYmUgb2Jq ZWN0cyB0aGF0IGFyZSBub3QgaW4gbWVtb3J5IChmb3IgaW5zdGFuY2UgaW4g cmVnaXN0ZXJzIG9yDQo+IHNldmVyYWwgcGllY2VzIGluIGRpZmZlcmVudCBw bGFjZXMpLg0KPiANCj4gQW55d2F5IGluIHRoZSBjYXNlIHlvdSBleHBvc2Us IHRoZSBEV0FSRiBleHByZXNzaW9ucyBjb21wdXRlIGJvdW5kcyAoaS5lLg0K PiBzY2FsYXIgdmFsdWVzKSBhbmQgdGh1cyB0aGlzIGZpZWxkIGlzIG5vdCBy ZWxldmFudFsxXS4NCj4gDQo+IEkgd2FzIG5vdCBhd2FyZSBvZiB0aGlzIGhv b2sgKGludGVnZXJfdG9fYWRkcmVzcykgYW5kIEkgY291bGQgbm90IGZpbmQN Cj4gcmVsZXZhbnQgZG9jdW1lbnRhdGlvbiB0byBsZWFybiBhYm91dCB3aGF0 IGl0IG1lYW5zLCBpbiB3aGF0IHNwZWNpZmljIGNhc2VzDQo+IGl0IHNob3Vs ZCBiZSB1c2VkL2F2b2lkZWQgYW5kIHdoeSBpdCBleGlzdHMgaW4gdGhlIGZp cnN0IHBsYWNlIChub3QgYmVpbmcNCj4gZmFtaWxpYXIgd2l0aCBBVlIgbmVp dGhlciwgSSBkb24ndCB1bmRlcnN0YW5kIHdoYXQgdGhlIGNvcnJlc3BvbmRp bmcgY29kZSBpbg0KPiBhdnItdGRlcC5jIGRvZXMpLCBzbyB0aGUgZm9sbG93 aW5nIGlzIHNwZWN1bGF0aW9uLg0KDQpUYXJnZXQgaG9vayBmb3IgaW50ZWdl cl90b19hZGRyZXNzIGRvZXMgc29tZSBtYW5pcHVsYXRpb24gb24gdGhlIGdp dmVuIHZhbHVlLg0KSW4gQVZSIHRhcmdldCwgaXQgYWRkcyBTUkFNIG1lbW9y eSBtYXNrIHRvIHRoZSB2YWx1ZSB0byBtYWtlIHRoYXQgU1JBTSBhZGRyZXNz Lg0KDQo+IGR3YXJmMl9sb2NleHByX2JhdG9uX2V2YWwgZXZhbHVhdGVzIGEg RFdBUkYgZXhwcmVzc2lvbiBhc3N1bWluZyBpdCBjb21wdXRlcw0KPiB0aGUg YWRkcmVzcyBvZiBhbiBvYmplY3RbMV0gYW5kIHRodXMgZW5kcyB1cCBpbnZv a2luZyB0aGlzIGhvb2suIFNvIG15DQo+IHVuZGVyc3RhbmRpbmcgaXMgdGhh dCBlaXRoZXIgd2Ugc2hvdWxkIG5vdCBjYWxsIGR3YXJmMl9sb2NleHByX2Jh dG9uX2V2YWwNCj4gd2hlbiBldmFsdWF0aW5nIHRoaW5ncyB0aGF0IGFyZSBu b3QgbG9jYXRpb25zIChzdWNoIGFzIHN1YnJhbmdlIGJvdW5kcyksDQo+IGVp dGhlciB3ZSBzaG91bGQgYWRhcHQgZHdhcmYyX2xvY2V4cHJfYmF0b25fZXZh bCB0byBhY2NlcHQgYSBuZXcgcGFyYW1ldGVyDQo+IHRlbGxpbmcgd2V0aGVy IHRoZSBjYWxsZXIgd2FudHMgYW4gYWRkcmVzcyBvciBhIHNjYWxhci4NCj4g DQo+IFRob3VnaHRzPw0KPiANCj4gWzFdIFRoaXMgbWFrZXMgbWUgZmVlbCBs aWtlIHRoZSBoYW5kbGluZyBvZiBldmVyeXRoaW5nIHRoYXQgaXMgbm90DQo+ IERXQVJGX1ZBTFVFIE1FTU9SWSBpbiB0aGlzIGZ1bmN0aW9uIGlzIGRlYWQg KGFuZCBpbmNvcnJlY3QpIGNvZGU6IHdlIHNob3VsZA0KPiBub3QgZ2V0IGFu eXRoaW5nIGVsc2UgaW4gdGhpcyBjb250ZXh0LiBJIGNoZWNrZWQgd2hhdCBo YXBwZW5zIHdoZW4NCj4gZXZhbHVhdGluZyBleHByZXNzaW9ucyBpbiBhIEdE QiBzZXNzaW9uOg0KPiBkd2FyZjJfZXZhbHVhdGVfbG9jX2Rlc2NfZnVsbCBp cyBjYWxsZWQgdG8gZ2V0IHRoZSBsb2NhdGlvbiBvZiBvYmplY3RzLCBub3QN Cj4gZHdhcmYyX2xvY2V4cHJfYmF0b25fZXZhbC4gSSB0cmllZCB0byByZW1v dmUgc3RhY2svcmVnaXN0ZXIvbGl0ZXJhbCBoYW5kbGluZw0KPiBhbmQgaGFk IG5vIHRlc3RzdWl0ZSByZWdyZXNzaW9uLg0KDQpGdW5jdGlvbiBkd2FyZjJf bG9jZXhwcl9iYXRvbl9ldmFsIGlzIGNhbGxlZCBieSBkd2FyZjJfZXZhbHVh dGVfcHJvcGVydHkgZm9yDQpsb2NhdGlvbiBleHByZXNzaW9uIChmcm9tIHJl c29sdmVfZHluYW1pY19yYW5nZS4gaS5lLiB0byByZXNvbHZlIGJvdW5kcyBv ZiANCmR5bmFtaWMgYXJyYXkgZS5nLiBpbnQgaW50X3ZsYVtuXSB3aGVyZSBu IGlzIGZ1bmN0aW9uIHBhcmFtZXRlcikuDQoNClJlZ2FyZHMsDQpQaXRjaHVt YW5pDQo= >From gdb-return-44742-listarch-gdb=sources.redhat.com@sourceware.org Wed Oct 14 06:54:35 2015 Return-Path: Delivered-To: listarch-gdb@sources.redhat.com Received: (qmail 105473 invoked by alias); 14 Oct 2015 06:54:35 -0000 Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org Delivered-To: mailing list gdb@sourceware.org Received: (qmail 105463 invoked by uid 89); 14 Oct 2015 06:54:34 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.2 required=5.0 tests=AWL,BAYES_00,KAM_LAZY_DOMAIN_SECURITY,RCVD_IN_DNSWL_LOW autolearn=no version=3.3.2 X-HELO: smtp.eu.adacore.com Received: from mel.act-europe.fr (HELO smtp.eu.adacore.com) (194.98.77.210) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Wed, 14 Oct 2015 06:54:33 +0000 Received: from localhost (localhost [127.0.0.1]) by filtered-smtp.eu.adacore.com (Postfix) with ESMTP id 71D47279EA9F; Wed, 14 Oct 2015 08:54:30 +0200 (CEST) Received: from smtp.eu.adacore.com ([127.0.0.1]) by localhost (smtp.eu.adacore.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Y1YZa_EBAinz; Wed, 14 Oct 2015 08:54:30 +0200 (CEST) Received: from [192.168.0.6] (nat75-2-78-193-84-173.fbxo.proxad.net [78.193.84.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.eu.adacore.com (Postfix) with ESMTPSA id 2A990279EA55; Wed, 14 Oct 2015 08:54:29 +0200 (CEST) Subject: Re: dynamic array's upper bound evaluated as address for AVR target To: "Sivanupandi, Pitchumani" , "gdb@sourceware.org" References: <561D18AD.6080701@adacore.com> Cc: Andrew Burgess , "tom@tromey.com" , "uweigand@de.ibm.com" From: Pierre-Marie de Rodat Message-ID: <561DFC25.5020106@adacore.com> Date: Wed, 14 Oct 2015 06:54:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2015-10/txt/msg00064.txt.bz2 Content-length: 809 On 10/14/2015 08:32 AM, Sivanupandi, Pitchumani wrote: > Target hook for integer_to_address does some manipulation on the given value. > In AVR target, it adds SRAM memory mask to the value to make that SRAM address. This is what I observed, but I wonder: why do we need this in the first place? In what situation do we have an integer on which we need to apply a mask to get an address (i.e. from where does this integer come?). > Function dwarf2_locexpr_baton_eval is called by dwarf2_evaluate_property for > location expression (from resolve_dynamic_range. i.e. to resolve bounds of > dynamic array e.g. int int_vla[n] where n is function parameter). Then maybe we should add this expect_address parameter to both dwarf2_evaluate_property and dwarf2_locexpr_baton_eval… -- Pierre-Marie de Rodat