From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:51009) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gm18q-0008Hz-TB for qemu-devel@nongnu.org; Tue, 22 Jan 2019 13:51:21 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gm18h-00088t-Sf for qemu-devel@nongnu.org; Tue, 22 Jan 2019 13:51:18 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:40406 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gm18h-00088I-IJ for qemu-devel@nongnu.org; Tue, 22 Jan 2019 13:51:11 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x0MGx3xw119048 for ; Tue, 22 Jan 2019 12:01:19 -0500 Received: from e15.ny.us.ibm.com (e15.ny.us.ibm.com [129.33.205.205]) by mx0b-001b2d01.pphosted.com with ESMTP id 2q66p59jxw-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 22 Jan 2019 12:01:19 -0500 Received: from localhost by e15.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 22 Jan 2019 17:01:18 -0000 From: Fabiano Rosas Date: Tue, 22 Jan 2019 15:01:09 -0200 Message-Id: <20190122170112.8706-1-farosas@linux.ibm.com> Subject: [Qemu-devel] [PATCH v4 0/3] ppc/gdbstub: Expose SPRs to GDB List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au, groug@kaod.org This series implements the reading and writing of Special Purpose Registers in PPC's gdbstub. How it works generally [1]: GDB asks for the target.xml file which contains the target description along with the list of available feature XMLs. GDB then asks for each of the XML files in sequence. The XML files contain a list of registers descriptions: When the user tries to access a register, GDB reads the XML file in sequence and sends QEMU the number of the register. This number is sequential across all feature files. The index provided by GDB must be converted by QEMU to match QEMU's internal representation. A set of callbacks are implemented to read/write the register. In this series: The first patch implements the dynamic generation of the power-spr.xml file. Making it dynamically facilitates converting the GDB index to an index useful for addressing the env->spr array. The second patch implements the gdb_{get,set}_spr_reg callbacks along with the convertion from GDB index to QEMU index. The third patch enables the functionality. https://sourceware.org/gdb/current/onlinedocs/gdb/Target-Descriptions.html v1 -> v2: - patch 1: explicitly store the gdb_id and add comment explaining why we need it - patch 2: use gdb_id to find the correct env->spr array's index https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg00648.html v2 -> v3: - patch 2: move gdb_register_coprocessor call from patch 3 so that all patches build independently https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg02939.html v3 -> v4: - patch 1: move gdb_spr_xml into PowerPCCPUClass so that it is generated only once for all CPUs http://lists.nongnu.org/archive/html/qemu-ppc/2019-01/msg00357.html Fabiano Rosas (3): target/ppc: Add SPRs XML generation code for gdbstub target/ppc: Add GDB callbacks for SPRs target/ppc: Enable reporting of SPRs to GDB target/ppc/cpu-qom.h | 4 +++ target/ppc/cpu.h | 5 +++ target/ppc/gdbstub.c | 60 +++++++++++++++++++++++++++++++ target/ppc/translate_init.inc.c | 62 +++++++++++++++++++++++++++++++-- 4 files changed, 129 insertions(+), 2 deletions(-) -- 2.17.1