From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) by sourceware.org (Postfix) with ESMTPS id 860563858032 for ; Sun, 7 Aug 2022 14:43:46 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 860563858032 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 277Ehhci086962; Sun, 7 Aug 2022 09:43:43 -0500 Received: from DFLE105.ent.ti.com (dfle105.ent.ti.com [10.64.6.26]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 277EhhCg012797 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Sun, 7 Aug 2022 09:43:43 -0500 Received: from DFLE104.ent.ti.com (10.64.6.25) by DFLE105.ent.ti.com (10.64.6.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Sun, 7 Aug 2022 09:43:43 -0500 Received: from DFLE104.ent.ti.com ([fe80::44c:e883:6f6f:384d]) by DFLE104.ent.ti.com ([fe80::44c:e883:6f6f:384d%17]) with mapi id 15.01.2308.014; Sun, 7 Aug 2022 09:43:42 -0500 From: "Denio, Mike" To: Andreas Schwab , "Denio, Mike via Gdb" Subject: RE: [EXTERNAL] Re: Confused by watchpoints on remote protocol Thread-Topic: [EXTERNAL] Re: Confused by watchpoints on remote protocol Thread-Index: Adip1GWVQGgzoEbbTR20UHUTp2psZAAUaSQQAAIliXkAAAkoAAAPQCtg Date: Sun, 7 Aug 2022 14:43:42 +0000 Message-ID: <1015b1085fd34dd4bd313e30785beabe@ti.com> References: <87pmhcjz45.fsf@linux-m68k.org> <1c446d6e52484cc8a3ac284726046913@ti.com> In-Reply-To: <1c446d6e52484cc8a3ac284726046913@ti.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.250.59.181] x-exclaimer-md-config: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 07 Aug 2022 14:43:48 -0000 I verified with a compiled C program, the watch always uses a hardware watc= h. Not sure what it doesn't like about my assembly, but it obviously has nothi= ng to do with my GDB server, so pressing on ... Thanks for the suggestion. Mike -----Original Message----- From: Denio, Mike <>=20 Sent: Sunday, August 07, 2022 2:34 AM To: 'Andreas Schwab' ; Denio, Mike via Gdb Subject: RE: [EXTERNAL] Re: Confused by watchpoints on remote protocol ram_table was just a symbol I created in assembly. Its really odd, and its not the symbol itself. For example: (gdb) watch (uint32_t)ram_table Watchpoint 1: (uint32_t)ram_table (gdb) watch *(uint32_t *)&ram_table Hardware watchpoint 2: *(uint32_t *)&ram_table (gdb) i b Num Type Disp Enb Address What 1 watchpoint keep y (uint32_t)ram_table 2 hw watchpoint keep y *(uint32_t *)&ram_table I can see both of these variants "watching" the exact same address. Maybe you are onto something however. I'll try it with a compiled C program= and see if the behavior is any different. Thanks, Mike -----Original Message----- From: Andreas Schwab =20 Sent: Sunday, August 07, 2022 2:24 AM To: Denio, Mike via Gdb Cc: Denio, Mike Subject: [EXTERNAL] Re: Confused by watchpoints on remote protocol On Aug 07 2022, Denio, Mike via Gdb wrote: > The only question I have is that when I type: > "watch *(uint32_t *)(0x80000018)" > I get a hardware watch point. > > And when I type: > "watch (uint32_t)ram_table" > I get a software watch point. What is ram_table? > Anyone know why? And how to change it to be always hardware? Try looking at breakpoint.c:can_use_hardware_watchpoint. --=20 Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint =3D 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."