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authorMark Kettenis <kettenis@gnu.org>2014-02-28 23:06:14 +0100
committerMark Kettenis <kettenis@gnu.org>2014-02-28 23:07:55 +0100
commit1ed586ce1dd53225383bdc7a09ff0939266994b6 (patch)
tree9e87e1f574082c141147ef284acabef5d40aabb3 /gdb/sparc64obsd-nat.c
parentab4756af55ddfeade06d9a14c0bd9e5c64145467 (diff)
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Enable rthreads supports on OpenBSD/sparc64.
gdb/ChangeLog: * configure.host (sparc64-*-openbsd*): Set gdb_host to obsd64. * config/sparc/obsd64.mh: New file. * sparc64obsd-nat.c: New file.
Diffstat (limited to 'gdb/sparc64obsd-nat.c')
-rw-r--r--gdb/sparc64obsd-nat.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/gdb/sparc64obsd-nat.c b/gdb/sparc64obsd-nat.c
new file mode 100644
index 0000000..a6cf8b3
--- /dev/null
+++ b/gdb/sparc64obsd-nat.c
@@ -0,0 +1,131 @@
+/* Native-dependent code for OpenBSD/sparc64.
+
+ Copyright (C) 2003-2014 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 "defs.h"
+#include "gdbcore.h"
+#include "regcache.h"
+#include "target.h"
+
+#include "sparc64-tdep.h"
+#include "sparc-nat.h"
+#include "obsd-nat.h"
+
+/* Determine whether `gregset_t' contains register REGNUM. */
+
+static int
+sparc64obsd_gregset_supplies_p (struct gdbarch *gdbarch, int regnum)
+{
+ /* Integer registers. */
+ if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
+ || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
+ || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
+ || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
+ return 1;
+
+ /* Control registers. */
+ if (regnum == SPARC64_PC_REGNUM
+ || regnum == SPARC64_NPC_REGNUM
+ || regnum == SPARC64_STATE_REGNUM
+ || regnum == SPARC64_Y_REGNUM)
+ return 1;
+
+ return 0;
+}
+
+/* Determine whether `fpregset_t' contains register REGNUM. */
+
+static int
+sparc64obsd_fpregset_supplies_p (struct gdbarch *gdbarch, int regnum)
+{
+ /* Floating-point registers. */
+ if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
+ || (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM))
+ return 1;
+
+ /* Control registers. */
+ if (regnum == SPARC64_FSR_REGNUM)
+ return 1;
+
+ return 0;
+}
+
+
+/* Support for debugging kernel virtual memory images. */
+
+#include <sys/types.h>
+#include <machine/pcb.h>
+
+#include "bsd-kvm.h"
+
+static int
+sparc64obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+ u_int64_t state;
+ int regnum;
+
+ /* The following is true for OpenBSD 3.0:
+
+ The pcb contains %sp and %pc, %pstate and %cwp. From this
+ information we reconstruct the register state as it would look
+ when we just returned from cpu_switch(). */
+
+ /* The stack pointer shouldn't be zero. */
+ if (pcb->pcb_sp == 0)
+ return 0;
+
+ /* If the program counter is zero, this is probably a core dump, and
+ we can get %pc from the stack. */
+ if (pcb->pcb_pc == 0)
+ read_memory(pcb->pcb_sp + BIAS - 176 + (11 * 8),
+ (gdb_byte *)&pcb->pcb_pc, sizeof pcb->pcb_pc);
+
+ regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
+ regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc);
+
+ state = pcb->pcb_pstate << 8 | pcb->pcb_cwp;
+ regcache_raw_supply (regcache, SPARC64_STATE_REGNUM, &state);
+
+ sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
+
+ return 1;
+}
+
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_sparc64obsd_nat (void);
+
+void
+_initialize_sparc64obsd_nat (void)
+{
+ sparc_supply_gregset = sparc64_supply_gregset;
+ sparc_collect_gregset = sparc64_collect_gregset;
+ sparc_supply_fpregset = sparc64_supply_fpregset;
+ sparc_collect_fpregset = sparc64_collect_fpregset;
+ sparc_gregset_supplies_p = sparc64obsd_gregset_supplies_p;
+ sparc_fpregset_supplies_p = sparc64obsd_fpregset_supplies_p;
+
+ sparc_gregset = &sparc64nbsd_gregset;
+ sparc_fpregset = &sparc64_bsd_fpregset;
+
+ /* Add some extra features to the generic SPARC target. */
+ obsd_add_target (sparc_target ());
+
+ /* Support debugging kernel virtual memory images. */
+ bsd_kvm_add_target (sparc64obsd_supply_pcb);
+}