From: John Baldwin <jhb@FreeBSD.org>
To: gdb-patches@sourceware.org, binutils@sourceware.org
Subject: [PATCH 3/3] Add native target for FreeBSD/mips.
Date: Wed, 23 Nov 2016 20:59:00 -0000 [thread overview]
Message-ID: <20161123205902.90995-4-jhb@FreeBSD.org> (raw)
In-Reply-To: <20161123205902.90995-1-jhb@FreeBSD.org>
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 092ca9e..83fc91b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,12 @@
2016-11-23 John Baldwin <jhb@FreeBSD.org>
+ * 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.
+
+2016-11-23 John Baldwin <jhb@FreeBSD.org>
+
* 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 d89a17f..e0ca5e7 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..67ce683
--- /dev/null
+++ b/gdb/mips-fbsd-nat.c
@@ -0,0 +1,141 @@
+/* Target-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 <http://www.gnu.org/licenses/>. */
+
+#include "defs.h"
+#include "inferior.h"
+#include "regcache.h"
+#include "target.h"
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+
+#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 int
+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
+mipsfbsd_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"));
+
+ mipsfbsd_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"));
+
+ mipsfbsd_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
+mipsfbsd_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"));
+
+ mipsfbsd_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"));
+
+ mipsfbsd_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"));
+ }
+}
+\f
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_mipsfbsd_nat (void);
+
+void
+_initialize_mipsfbsd_nat (void)
+{
+ struct target_ops *t;
+
+ t = inf_ptrace_target ();
+ t->to_fetch_registers = mipsfbsd_fetch_inferior_registers;
+ t->to_store_registers = mipsfbsd_store_inferior_registers;
+ fbsd_nat_add_target (t);
+}
--
2.9.2
next prev parent reply other threads:[~2016-11-23 20:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-23 20:59 [PATCH 0/3] Add FreeBSD/mips targets to GDB John Baldwin
2016-11-23 20:59 ` [PATCH 2/3] Add FreeBSD/mips architecture John Baldwin
2016-11-25 22:52 ` Luis Machado
2016-11-28 22:54 ` John Baldwin
2016-11-23 20:59 ` John Baldwin [this message]
2016-11-26 4:26 ` [PATCH 3/3] Add native target for FreeBSD/mips Luis Machado
2016-11-28 22:54 ` John Baldwin
2016-11-23 20:59 ` [PATCH 1/3] Use the ELF class to determine the word size for FreeBSD core notes John Baldwin
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