-/* Native-dependent code for NetBSD/i386, for GDB.
- Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002
- Free Software Foundation, Inc.
+/* Native-dependent code for NetBSD/i386.
+
+ Copyright (C) 2004-2005, 2007-2012 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include <sys/types.h>
-#include <sys/ptrace.h>
-#include <machine/reg.h>
-#include <machine/frame.h>
-#include "inferior.h"
#include "gdbcore.h"
#include "regcache.h"
+#include "target.h"
-#ifndef HAVE_GREGSET_T
-typedef struct reg gregset_t;
-#endif
-
-#ifndef HAVE_FPREGSET_T
-typedef struct fpreg fpregset_t;
-#endif
-
-#include "gregset.h"
-
-/* Prototypes for i387_supply_fsave etc. */
-#include "i387-nat.h"
-
-struct md_core
-{
- struct reg intreg;
- char freg[108];
-};
-
-static void
-fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
- CORE_ADDR ignore)
-{
- struct md_core *core_reg = (struct md_core *) core_reg_sect;
+#include "i386-tdep.h"
+#include "i386bsd-nat.h"
- /* We get everything from one section. */
- if (which != 0)
- return;
+/* Support for debugging kernel virtual memory images. */
- /* Integer registers. */
- supply_gregset (&core_reg->intreg);
+#include <sys/types.h>
+#include <machine/frame.h>
+#include <machine/pcb.h>
- /* Floating point registers. */
- i387_supply_fsave (core_reg->freg);
-}
+#include "nbsd-nat.h"
+#include "bsd-kvm.h"
-static void
-fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
- CORE_ADDR ignore)
+static int
+i386nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
- gregset_t gregset;
-
- switch (which)
- {
- case 0: /* Integer registers. */
- if (core_reg_size != sizeof (struct reg))
- warning ("Wrong size register set in core file.");
- else
- {
- memcpy (&gregset, core_reg_sect, sizeof (gregset));
- supply_gregset (&gregset);
- }
- break;
-
- case 2: /* Floating point registers. */
- if (core_reg_size != 108)
- warning ("Wrong size FP register set in core file.");
- else
- i387_supply_fsave (core_reg_sect);
- break;
-
- case 3: /* "Extended" floating point registers. This is gdb-speak
- for SSE/SSE2. */
- if (core_reg_size != 512)
- warning ("Wrong size XMM register set in core file.");
- else
- i387_supply_fxsave (core_reg_sect);
- break;
-
- default:
- /* Don't know what kind of register request this is; just ignore it. */
- break;
- }
+ struct switchframe sf;
+
+ /* The following is true for NetBSD 1.6.2:
+
+ The pcb contains %esp and %ebp at the point of the context switch
+ in cpu_switch(). At that point we have a stack frame as
+ described by `struct switchframe', which for NetBSD 1.6.2 has the
+ following layout:
+
+ interrupt level
+ %edi
+ %esi
+ %ebx
+ %eip
+
+ 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_esp == 0)
+ return 0;
+
+ read_memory (pcb->pcb_esp, (gdb_byte *)&sf, sizeof sf);
+ pcb->pcb_esp += sizeof (struct switchframe);
+ regcache_raw_supply (regcache, I386_EDI_REGNUM, &sf.sf_edi);
+ regcache_raw_supply (regcache, I386_ESI_REGNUM, &sf.sf_esi);
+ regcache_raw_supply (regcache, I386_EBP_REGNUM, &pcb->pcb_ebp);
+ regcache_raw_supply (regcache, I386_ESP_REGNUM, &pcb->pcb_esp);
+ regcache_raw_supply (regcache, I386_EBX_REGNUM, &sf.sf_ebx);
+ regcache_raw_supply (regcache, I386_EIP_REGNUM, &sf.sf_eip);
+
+ return 1;
}
+\f
-/* Register that we are able to handle i386nbsd core file formats.
- FIXME: is this really bfd_target_unknown_flavour? */
-
-static struct core_fns i386nbsd_core_fns =
-{
- bfd_target_unknown_flavour, /* core_flavour */
- default_check_format, /* check_format */
- default_core_sniffer, /* core_sniffer */
- fetch_core_registers, /* core_read_registers */
- NULL /* next */
-};
-
-static struct core_fns i386nbsd_elfcore_fns =
-{
- bfd_target_elf_flavour, /* core_flavour */
- default_check_format, /* check_format */
- default_core_sniffer, /* core_sniffer */
- fetch_elfcore_registers, /* core_read_registers */
- NULL /* next */
-};
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_i386nbsd_nat (void);
void
_initialize_i386nbsd_nat (void)
{
- add_core_fns (&i386nbsd_core_fns);
- add_core_fns (&i386nbsd_elfcore_fns);
+ struct target_ops *t;
+
+ /* Add some extra features to the common *BSD/i386 target. */
+ t = i386bsd_target ();
+ t->to_pid_to_exec_file = nbsd_pid_to_exec_file;
+ add_target (t);
+
+ /* Support debugging kernel virtual memory images. */
+ bsd_kvm_add_target (i386nbsd_supply_pcb);
}
projects / deliverable / binutils-gdb.git / blobdiff