From patchwork Fri Sep 22 22:57:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Baldwin X-Patchwork-Id: 23100 Received: (qmail 9921 invoked by alias); 22 Sep 2017 23:07:27 -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 9904 invoked by uid 89); 22 Sep 2017 23:07:27 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-24.4 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, SPF_HELO_PASS, SPF_SOFTFAIL autolearn=ham version=3.3.2 spammy= 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; Fri, 22 Sep 2017 23:07:25 +0000 Received: from ralph.baldwin.cx.com (c-73-231-226-104.hsd1.ca.comcast.net [73.231.226.104]) by mail.baldwin.cx (Postfix) with ESMTPSA id 0CAF110A8BE; Fri, 22 Sep 2017 18:58:15 -0400 (EDT) From: John Baldwin To: gdb-patches@sourceware.org, binutils@sourceware.org Subject: [PATCH v2 4/4] Add native target for FreeBSD/arm. Date: Fri, 22 Sep 2017 15:57:13 -0700 Message-Id: <20170922225713.26609-5-jhb@FreeBSD.org> In-Reply-To: <20170922225713.26609-1-jhb@FreeBSD.org> References: <20170922225713.26609-1-jhb@FreeBSD.org> X-IsSubscribed: yes gdb/ChangeLog: * Makefile.in (ALLDEPFILES): Add arm-fbsd-nat.c. * NEWS: Mention new FreeBSD/arm native configuration. * configure.host: Add arm*-*-freebsd*. * configure.nat: Likewise. * arm-fbsd-nat.c: New file. --- gdb/ChangeLog | 8 +++ gdb/Makefile.in | 1 + gdb/NEWS | 1 + gdb/arm-fbsd-nat.c | 151 +++++++++++++++++++++++++++++++++++++++++++++++++++++ gdb/configure.host | 1 + gdb/configure.nat | 5 ++ 6 files changed, 167 insertions(+) create mode 100644 gdb/arm-fbsd-nat.c diff --git a/gdb/ChangeLog b/gdb/ChangeLog index f09c24c81d..0c7627c2ed 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,13 @@ 2017-09-22 John Baldwin + * Makefile.in (ALLDEPFILES): Add arm-fbsd-nat.c. + * NEWS: Mention new FreeBSD/arm native configuration. + * configure.host: Add arm*-*-freebsd*. + * configure.nat: Likewise. + * arm-fbsd-nat.c: New file. + +2017-09-22 John Baldwin + * Makefile.in (ALL_TARGET_OBS): Add arm-fbsd-tdep.o. (ALLDEPFILES): Add arm-fbsd-tdep.c. * NEWS: Mention new FreeBSD/arm target. diff --git a/gdb/Makefile.in b/gdb/Makefile.in index 53514b0f49..bf416c6b66 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -2532,6 +2532,7 @@ ALLDEPFILES = \ arc-tdep.c \ arm.c \ arm-bsd-tdep.c \ + arm-fbsd-nat.c \ arm-fbsd-tdep.c \ arm-get-next-pcs.c \ arm-linux.c \ diff --git a/gdb/NEWS b/gdb/NEWS index 4e8ef17e0d..4f30c1d861 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -110,6 +110,7 @@ starti * New native configurations FreeBSD/aarch64 aarch64*-*-freebsd* +FreeBSD/arm arm*-*-freebsd* * New targets diff --git a/gdb/arm-fbsd-nat.c b/gdb/arm-fbsd-nat.c new file mode 100644 index 0000000000..b1c5c360f8 --- /dev/null +++ b/gdb/arm-fbsd-nat.c @@ -0,0 +1,151 @@ +/* Native-dependent code for FreeBSD/arm. + + Copyright (C) 2017 Free Software Foundation, Inc. + + 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 "target.h" + +#include +#include +#include + +#include "fbsd-nat.h" +#include "arm-tdep.h" +#include "arm-fbsd-tdep.h" +#include "inf-ptrace.h" + +/* Determine if PT_GETREGS fetches REGNUM. */ + +static bool +getregs_supplies (struct gdbarch *gdbarch, int regnum) +{ + return ((regnum >= ARM_A1_REGNUM && regnum <= ARM_PC_REGNUM) + || regnum == ARM_PS_REGNUM); +} + +#ifdef PT_GETVFPREGS +/* Determine if PT_GETVFPREGS fetches REGNUM. */ + +static bool +getvfpregs_supplies (struct gdbarch *gdbarch, int regnum) +{ + return ((regnum >= ARM_D0_REGNUM && regnum <= ARM_D31_REGNUM) + || regnum == ARM_FPSCR_REGNUM); +} +#endif + +/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this + for all registers. */ + +static void +arm_fbsd_fetch_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache)); + + struct gdbarch *gdbarch = get_regcache_arch (regcache); + if (regnum == -1 || getregs_supplies (gdbarch, regnum)) + { + struct reg regs; + + if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); + + regcache->supply_regset (&arm_fbsd_gregset, regnum, ®s, + sizeof (regs)); + } + +#ifdef PT_GETVFPREGS + if (regnum == -1 || getvfpregs_supplies (gdbarch, regnum)) + { + struct vfpreg vfpregs; + + if (ptrace (PT_GETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + regcache->supply_regset (&arm_fbsd_vfpregset, regnum, &vfpregs, + sizeof (vfpregs)); + } +#endif +} + +/* Store register REGNUM back into the inferior. If REGNUM is -1, do + this for all registers. */ + +static void +arm_fbsd_store_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache)); + + struct gdbarch *gdbarch = get_regcache_arch (regcache); + if (regnum == -1 || getregs_supplies (gdbarch, regnum)) + { + struct reg regs; + + if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); + + regcache->collect_regset (&arm_fbsd_gregset, regnum, ®s, + sizeof (regs)); + + if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't write registers")); + } + +#ifdef PT_GETVFPREGS + if (regnum == -1 || getvfpregs_supplies (gdbarch, regnum)) + { + struct vfpreg vfpregs; + + if (ptrace (PT_GETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1) + perror_with_name (_("Couldn't get floating point status")); + + regcache->collect_regset (&arm_fbsd_vfpregset, regnum, &vfpregs, + sizeof (vfpregs)); + + if (ptrace (PT_SETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1) + perror_with_name (_("Couldn't write floating point status")); + } +#endif +} + +/* Implement the to_read_description method. */ + +static const struct target_desc * +arm_fbsd_read_description (struct target_ops *ops) +{ + const struct target_desc *desc; + + desc = arm_fbsd_read_description_auxv (ops); + if (desc == NULL) + desc = ops->beneath->to_read_description (ops->beneath); + return desc; +} + +void +_initialize_arm_fbsd_nat (void) +{ + struct target_ops *t; + + t = inf_ptrace_target (); + t->to_fetch_registers = arm_fbsd_fetch_inferior_registers; + t->to_store_registers = arm_fbsd_store_inferior_registers; + t->to_read_description = arm_fbsd_read_description; + fbsd_nat_add_target (t); +} diff --git a/gdb/configure.host b/gdb/configure.host index 304675f137..ee53f25e9e 100644 --- a/gdb/configure.host +++ b/gdb/configure.host @@ -91,6 +91,7 @@ alpha*-*-netbsd* | alpha*-*-knetbsd*-gnu) gdb_host=nbsd ;; alpha*-*-openbsd*) gdb_host=nbsd ;; +arm*-*-freebsd*) gdb_host=fbsd ;; arm*-*-linux*) gdb_host=linux ;; arm*-*-netbsdelf* | arm*-*-knetbsd*-gnu) gdb_host=nbsdelf ;; diff --git a/gdb/configure.nat b/gdb/configure.nat index bf851f5ffc..4820936f5e 100644 --- a/gdb/configure.nat +++ b/gdb/configure.nat @@ -150,6 +150,11 @@ case ${gdb_host} in NATDEPFILES="${NATDEPFILES} aarch64-fbsd-nat.o" LOADLIBES= ;; + arm) + # Host: FreeBSD/arm + NATDEPFILES="${NATDEPFILES} arm-fbsd-nat.o" + LOADLIBES= + ;; i386) # Host: FreeBSD/i386 NATDEPFILES="${NATDEPFILES} x86-nat.o x86-dregs.o \