From patchwork Tue Dec 6 21:00:15 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Baldwin X-Patchwork-Id: 18246 Received: (qmail 54741 invoked by alias); 6 Dec 2016 21:01:55 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Delivered-To: mailing list gdb-patches@sourceware.org Received: (qmail 54613 invoked by uid 89); 6 Dec 2016 21:01:54 -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, SPF_HELO_PASS, SPF_SOFTFAIL autolearn=no version=3.3.2 spammy=baldwin, programme, Baldwin, Computer X-Spam-User: qpsmtpd, 2 recipients X-HELO: mail.baldwin.cx Received: from bigwig.baldwin.cx (HELO mail.baldwin.cx) (96.47.65.170) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 06 Dec 2016 21:01:45 +0000 Received: from ralph.com (c-73-231-226-104.hsd1.ca.comcast.net [73.231.226.104]) by mail.baldwin.cx (Postfix) with ESMTPSA id 2A78B10AA65; Tue, 6 Dec 2016 16:01:43 -0500 (EST) From: John Baldwin To: gdb-patches@sourceware.org, binutils@sourceware.org Subject: [PATCH v2 3/3] Add native target for FreeBSD/mips. Date: Tue, 6 Dec 2016 13:00:15 -0800 Message-Id: <20161206210015.40422-4-jhb@FreeBSD.org> In-Reply-To: <20161206210015.40422-1-jhb@FreeBSD.org> References: <20161206210015.40422-1-jhb@FreeBSD.org> X-IsSubscribed: yes This supports the o32 and n64 ABIs. gdb/ChangeLog: * Makefile.in (ALLDEPFILES): Add mips-fbsd-nat.c. * config/mips/fbsd.mh: New file. * configure.host: Add mips*-*-freebsd*. * mips-fbsd-nat.c: New file. --- gdb/ChangeLog | 7 +++ gdb/Makefile.in | 1 + gdb/config/mips/fbsd.mh | 3 ++ gdb/configure.host | 1 + gdb/mips-fbsd-nat.c | 141 ++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 153 insertions(+) create mode 100644 gdb/config/mips/fbsd.mh create mode 100644 gdb/mips-fbsd-nat.c diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 890702e..fc43f81 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,12 @@ 2016-12-06 John Baldwin + * Makefile.in (ALLDEPFILES): Add mips-fbsd-nat.c. + * config/mips/fbsd.mh: New file. + * configure.host: Add mips*-*-freebsd*. + * mips-fbsd-nat.c: New file. + +2016-12-06 John Baldwin + * Makefile.in (ALL_TARGET_OBS): Add mips-fbsd-tdep.o. (ALLDEPFILES): Add mips-fbsd-tdep.c. * configure.tgt: Add mips*-*-freebsd*. diff --git a/gdb/Makefile.in b/gdb/Makefile.in index e34fa4a..dee9d73 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -2542,6 +2542,7 @@ ALLDEPFILES = \ microblaze-linux-tdep.c \ microblaze-tdep.c \ mingw-hdep.c \ + mips-fbsd-nat.c \ mips-fbsd-tdep.c \ mips-linux-nat.c \ mips-linux-tdep.c \ diff --git a/gdb/config/mips/fbsd.mh b/gdb/config/mips/fbsd.mh new file mode 100644 index 0000000..f433347 --- /dev/null +++ b/gdb/config/mips/fbsd.mh @@ -0,0 +1,3 @@ +# Host: FreeBSD/mips +NATDEPFILES= fork-child.o inf-ptrace.o fbsd-nat.o mips-fbsd-nat.o +HAVE_NATIVE_GCORE_HOST = 1 diff --git a/gdb/configure.host b/gdb/configure.host index ef265eb..c45f61d 100644 --- a/gdb/configure.host +++ b/gdb/configure.host @@ -129,6 +129,7 @@ m88*-*-openbsd*) gdb_host=obsd ;; mips*-*-linux*) gdb_host=linux ;; mips*-*-netbsd* | mips*-*-knetbsd*-gnu) gdb_host=nbsd ;; +mips*-*-freebsd*) gdb_host=fbsd ;; mips64*-*-openbsd*) gdb_host=obsd64 ;; powerpc-*-aix* | rs6000-*-* | powerpc64-*-aix*) diff --git a/gdb/mips-fbsd-nat.c b/gdb/mips-fbsd-nat.c new file mode 100644 index 0000000..ec1dcd8 --- /dev/null +++ b/gdb/mips-fbsd-nat.c @@ -0,0 +1,141 @@ +/* Native-dependent code for FreeBSD/mips. + + Copyright (C) 2016 Free Software Foundation, Inc. + + This software was developed by SRI International and the University + of Cambridge Computer Laboratory under DARPA/AFRL contract + FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research + programme. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +#include "defs.h" +#include "inferior.h" +#include "regcache.h" +#include "target.h" + +#include +#include +#include + +#include "fbsd-nat.h" +#include "mips-tdep.h" +#include "mips-fbsd-tdep.h" +#include "inf-ptrace.h" + +/* Determine if PT_GETREGS fetches this register. */ + +static bool +getregs_supplies (struct gdbarch *gdbarch, int regnum) +{ + return ((regnum) >= MIPS_ZERO_REGNUM + && (regnum) <= gdbarch_pc_regnum (gdbarch)); +} + +/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this + for all registers. */ + +static void +mips_fbsd_fetch_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + if (regnum == -1 || getregs_supplies (gdbarch, regnum)) + { + struct reg regs; + + if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); + + mips_fbsd_supply_gregs (regcache, regnum, ®s, sizeof (register_t)); + if (regnum != -1) + return; + } + + if (regnum == -1 + || regnum >= gdbarch_fp0_regnum (get_regcache_arch (regcache))) + { + struct fpreg fpregs; + + if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + mips_fbsd_supply_fpregs (regcache, regnum, &fpregs, + sizeof (f_register_t)); + } +} + +/* Store register REGNUM back into the inferior. If REGNUM is -1, do + this for all registers. */ + +static void +mips_fbsd_store_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + if (regnum == -1 || getregs_supplies (gdbarch, regnum)) + { + struct reg regs; + + if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); + + mips_fbsd_collect_gregs (regcache, regnum, (char *) ®s, + sizeof (register_t)); + + if (ptrace (PT_SETREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't write registers")); + + if (regnum != -1) + return; + } + + if (regnum == -1 + || regnum >= gdbarch_fp0_regnum (get_regcache_arch (regcache))) + { + struct fpreg fpregs; + + if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + mips_fbsd_collect_fpregs (regcache, regnum, (char *) &fpregs, + sizeof (f_register_t)); + + if (ptrace (PT_SETFPREGS, get_ptrace_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) + perror_with_name (_("Couldn't write floating point status")); + } +} + + +/* Provide a prototype to silence -Wmissing-prototypes. */ +void _initialize_mips_fbsd_nat (void); + +void +_initialize_mips_fbsd_nat (void) +{ + struct target_ops *t; + + t = inf_ptrace_target (); + t->to_fetch_registers = mips_fbsd_fetch_inferior_registers; + t->to_store_registers = mips_fbsd_store_inferior_registers; + fbsd_nat_add_target (t); +}