From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1254 invoked by alias); 26 Jul 2013 20:13:45 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 1221 invoked by uid 89); 26 Jul 2013 20:13:45 -0000 X-Spam-SWARE-Status: No, score=-4.9 required=5.0 tests=AWL,BAYES_50,KHOP_THREADED,RCVD_IN_HOSTKARMA_W,RCVD_IN_HOSTKARMA_WL,RDNS_NONE,SPF_HELO_PASS,SPF_PASS autolearn=no version=3.3.1 Received: from Unknown (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Fri, 26 Jul 2013 20:13:44 +0000 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r6QKDbhN009172 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 26 Jul 2013 16:13:37 -0400 Received: from psique.redhat.com (ovpn-113-184.phx2.redhat.com [10.3.113.184]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id r6QKDPYu007550; Fri, 26 Jul 2013 16:13:36 -0400 From: Sergio Durigan Junior To: GDB Patches Cc: Sergio Durigan Junior , Tom Tromey Subject: [PATCH 6/7] Xtensa support Date: Fri, 26 Jul 2013 20:13:00 -0000 Message-Id: <1374869594-16965-7-git-send-email-sergiodj@redhat.com> In-Reply-To: <1374869594-16965-1-git-send-email-sergiodj@redhat.com> References: <1374869594-16965-1-git-send-email-sergiodj@redhat.com> X-SW-Source: 2013-07/txt/msg00656.txt.bz2 Xtensa target support. It uses a different value for SIGRTMAX, therefore we have to handle it here. 2013-07-26 Sergio Durigan Junior * xtensa-linux-tdep.c: Define enum with differences between Xtensa and Linux kernel generic signals. (xtensa_linux_gdb_signal_from_target): New function. (xtensa_linux_gdb_signal_to_target): Likewise. (xtensa_linux_init_abi): Set gdbarch_gdb_signal_to_target to the functions defined above. --- gdb/xtensa-linux-tdep.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) diff --git a/gdb/xtensa-linux-tdep.c b/gdb/xtensa-linux-tdep.c index b7f11b9..fb32826 100644 --- a/gdb/xtensa-linux-tdep.c +++ b/gdb/xtensa-linux-tdep.c @@ -23,6 +23,75 @@ #include "solib-svr4.h" #include "symtab.h" +/* This enum represents the signals' numbers on the Xtensa + architecture. It just contains the signal definitions which are + different from x86. + + It is derived from the file , + from the Linux kernel tree. */ + +enum + { + XTENSA_LINUX_SIGRTMIN = 32, + XTENSA_LINUX_SIGRTMAX = 63, + }; + +/* Implementation of `gdbarch_gdb_signal_from_target', as defined in + gdbarch.h. */ + +static enum gdb_signal +xtensa_linux_gdb_signal_from_target (struct gdbarch *gdbarch, + int signal) +{ + if (signal >= XTENSA_LINUX_SIGRTMIN && signal <= XTENSA_LINUX_SIGRTMAX) + { + int offset = signal - XTENSA_LINUX_SIGRTMIN; + + if (offset == 0) + return GDB_SIGNAL_REALTIME_32; + else + return (enum gdb_signal) (offset - 1 + + (int) GDB_SIGNAL_REALTIME_33); + } + else if (signal > XTENSA_LINUX_SIGRTMAX) + return GDB_SIGNAL_UNKNOWN; + + return linux_gdb_signal_from_target (gdbarch, signal); +} + +/* Implementation of `gdbarch_gdb_signal_to_target', as defined in + gdbarch.h. */ + +static int +xtensa_linux_gdb_signal_to_target (struct gdbarch *gdbarch, + enum gdb_signal signal) +{ + switch (signal) + { + /* GDB_SIGNAL_REALTIME_32 is not continuous in , + therefore we have to handle it here. */ + case GDB_SIGNAL_REALTIME_32: + return XTENSA_LINUX_SIGRTMIN; + + /* GDB_SIGNAL_REALTIME_64 is not valid on Xtensa. */ + case GDB_SIGNAL_REALTIME_64: + return -1; + } + + /* GDB_SIGNAL_REALTIME_33 to _63 are continuous. + + Xtensa does not have _64. */ + if (signal >= GDB_SIGNAL_REALTIME_33 + && signal <= GDB_SIGNAL_REALTIME_63) + { + int offset = signal - GDB_SIGNAL_REALTIME_33; + + return XTENSA_LINUX_SIGRTMIN + 1 + offset; + } + + return linux_gdb_signal_to_target (gdbarch, signal); +} + /* OS specific initialization of gdbarch. */ static void @@ -32,6 +101,11 @@ xtensa_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) set_solib_svr4_fetch_link_map_offsets (gdbarch, svr4_ilp32_fetch_link_map_offsets); + + set_gdbarch_gdb_signal_from_target (gdbarch, + xtensa_linux_gdb_signal_from_target); + set_gdbarch_gdb_signal_to_target (gdbarch, + xtensa_linux_gdb_signal_to_target); } /* Provide a prototype to silence -Wmissing-prototypes. */ -- 1.7.11.7