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authorKamil Rytarowski <n54@gmx.com>2020-10-06 18:10:26 +0200
committerKamil Rytarowski <n54@gmx.com>2020-10-07 14:39:59 +0200
commit8e1d09292902cff8325b08a64fa5a918c7f9aa4f (patch)
tree7b8fbc5a7dcd9609b729aeef5d60207192052c83 /gdbserver
parent64c03bdb6ed0b1b44ebe6f9f151fde3af83bdf38 (diff)
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Add NetBSD/aarch64 gdbserver support
The support is on par with NetBSD/amd64, thus GPR works, single step and software breakpoint are operational, and the SVR4 r_debug integration is functional. gdbserver/ChangeLog: * netbsd-aarch64-low.cc: Add. * Makefile.in (SFILES): Register "netbsd-aarch64-low.c". * configure.srv: Add aarch64*-*-netbsd*.
Diffstat (limited to 'gdbserver')
-rw-r--r--gdbserver/configure.srv6
-rw-r--r--gdbserver/netbsd-aarch64-low.cc113
2 files changed, 119 insertions, 0 deletions
diff --git a/gdbserver/configure.srv b/gdbserver/configure.srv
index c4fe4ca..cd25b15 100644
--- a/gdbserver/configure.srv
+++ b/gdbserver/configure.srv
@@ -61,6 +61,12 @@ case "${gdbserver_host}" in
ipa_obj="${ipa_obj} linux-aarch64-tdesc-ipa.o"
ipa_obj="${ipa_obj} arch/aarch64-ipa.o"
;;
+ aarch64*-*-netbsd*) srv_regobj=""
+ srv_tgtobj="netbsd-low.o netbsd-aarch64-low.o fork-child.o"
+ srv_tgtobj="${srv_tgtobj} nat/fork-inferior.o"
+ srv_tgtobj="${srv_tgtobj} nat/netbsd-nat.o"
+ srv_tgtobj="${srv_tgtobj} arch/aarch64-insn.o arch/aarch64.o"
+ ;;
arm*-*-linux*) srv_tgtobj="$srv_linux_obj linux-arm-low.o"
srv_tgtobj="$srv_tgtobj linux-arm-tdesc.o"
srv_tgtobj="$srv_tgtobj linux-aarch32-low.o"
diff --git a/gdbserver/netbsd-aarch64-low.cc b/gdbserver/netbsd-aarch64-low.cc
new file mode 100644
index 0000000..ca76119
--- /dev/null
+++ b/gdbserver/netbsd-aarch64-low.cc
@@ -0,0 +1,113 @@
+/* Copyright (C) 2020 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 <http://www.gnu.org/licenses/>. */
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <limits.h>
+
+#include "server.h"
+#include "netbsd-low.h"
+#include "arch/aarch64.h"
+#include "arch/aarch64-insn.h"
+#include "tdesc.h"
+
+/* The fill_function for the general-purpose register set. */
+
+static void
+netbsd_aarch64_fill_gregset (struct regcache *regcache, char *buf)
+{
+ struct reg *r = (struct reg *) buf;
+
+#define netbsd_aarch64_collect_gp(regnum, fld) do { \
+ collect_register (regcache, regnum, &r->fld); \
+ } while (0)
+
+ for (size_t i = 0; i < ARRAY_SIZE (r->r_reg); i++)
+ netbsd_aarch64_collect_gp (AARCH64_X0_REGNUM + i, r_reg[i]);
+
+ netbsd_aarch64_collect_gp (AARCH64_SP_REGNUM, r_sp);
+ netbsd_aarch64_collect_gp (AARCH64_PC_REGNUM, r_pc);
+}
+
+/* The store_function for the general-purpose register set. */
+
+static void
+netbsd_aarch64_store_gregset (struct regcache *regcache, const char *buf)
+{
+ struct reg *r = (struct reg *) buf;
+
+#define netbsd_aarch64_supply_gp(regnum, fld) do { \
+ supply_register (regcache, regnum, &r->fld); \
+ } while(0)
+
+ for (size_t i = 0; i < ARRAY_SIZE (r->r_reg); i++)
+ netbsd_aarch64_supply_gp (AARCH64_X0_REGNUM + i, r_reg[i]);
+
+ netbsd_aarch64_supply_gp (AARCH64_SP_REGNUM, r_sp);
+ netbsd_aarch64_supply_gp (AARCH64_PC_REGNUM, r_pc);
+}
+
+/* Description of all the aarch64-netbsd register sets. */
+
+static const struct netbsd_regset_info netbsd_target_regsets[] =
+{
+ /* General Purpose Registers. */
+ {PT_GETREGS, PT_SETREGS, sizeof (struct reg),
+ netbsd_aarch64_fill_gregset, netbsd_aarch64_store_gregset},
+ /* End of list marker. */
+ {0, 0, -1, NULL, NULL }
+};
+
+/* NetBSD target op definitions for the aarch64 architecture. */
+
+class netbsd_aarch64_target : public netbsd_process_target
+{
+protected:
+ const netbsd_regset_info *get_regs_info () override;
+
+ void low_arch_setup () override;
+};
+
+/* Return the information to access registers. */
+
+const netbsd_regset_info *
+netbsd_aarch64_target::get_regs_info ()
+{
+ return netbsd_target_regsets;
+}
+
+/* Architecture-specific setup for the current process. */
+
+void
+netbsd_aarch64_target::low_arch_setup ()
+{
+ target_desc *tdesc
+ = aarch64_create_target_description (0, false);
+
+ static const char *expedite_regs_aarch64[] = { "x29", "sp", "pc", NULL };
+ init_target_desc (tdesc, expedite_regs_aarch64);
+
+ current_process ()->tdesc = tdesc;
+}
+
+/* The singleton target ops object. */
+
+static netbsd_aarch64_target the_netbsd_aarch64_target;
+
+/* The NetBSD target ops object. */
+
+netbsd_process_target *the_netbsd_target = &the_netbsd_aarch64_target;