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-rw-r--r--gdb/sparc-nbsd-nat.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/gdb/sparc-nbsd-nat.c b/gdb/sparc-nbsd-nat.c
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+++ b/gdb/sparc-nbsd-nat.c
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+/* Native-dependent code for NetBSD/sparc.
+
+ Copyright (C) 2002-2016 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 "regcache.h"
+#include "target.h"
+
+#include "sparc-tdep.h"
+#include "sparc-nat.h"
+
+/* Support for debugging kernel virtual memory images. */
+
+#include <sys/types.h>
+#include <machine/pcb.h>
+
+#include "bsd-kvm.h"
+
+static int
+sparc32nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+ /* The following is true for NetBSD 1.6.2:
+
+ The pcb contains %sp, %pc, %psr and %wim. 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;
+
+ regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
+ regcache_raw_supply (regcache, SPARC_O7_REGNUM, &pcb->pcb_pc);
+ regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, &pcb->pcb_psr);
+ regcache_raw_supply (regcache, SPARC32_WIM_REGNUM, &pcb->pcb_wim);
+ regcache_raw_supply (regcache, SPARC32_PC_REGNUM, &pcb->pcb_pc);
+
+ sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
+
+ return 1;
+}
+
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_sparcnbsd_nat (void);
+
+void
+_initialize_sparcnbsd_nat (void)
+{
+ sparc_gregmap = &sparc32nbsd_gregmap;
+ sparc_fpregmap = &sparc32_bsd_fpregmap;
+
+ /* We've got nothing to add to the generic SPARC target. */
+ add_target (sparc_target ());
+
+ /* Support debugging kernel virtual memory images. */
+ bsd_kvm_add_target (sparc32nbsd_supply_pcb);
+}