/* Native-dependent code for Motorola 68000 BSD's.
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004-2013 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 "gdbcore.h"
#include "inferior.h"
#include "regcache.h"
#include <machine/reg.h>
#include "m68k-tdep.h"
+#include "inf-ptrace.h"
static int
m68kbsd_gregset_supplies_p (int regnum)
static void
m68kbsd_supply_fpregset (struct regcache *regcache, const void *fpregs)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
const char *regs = fpregs;
int regnum;
for (regnum = M68K_FP0_REGNUM; regnum <= M68K_FPI_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum,
- regs + m68kbsd_fpreg_offset (regnum));
+ regs + m68kbsd_fpreg_offset (gdbarch, regnum));
}
/* Collect the general-purpose registers from REGCACHE and store them
for (i = M68K_D0_REGNUM; i <= M68K_PC_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
- regcache_raw_collect (regcache, regnum, regs + i * 4);
+ regcache_raw_collect (regcache, i, regs + i * 4);
}
}
m68kbsd_collect_fpregset (struct regcache *regcache,
void *fpregs, int regnum)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
char *regs = fpregs;
int i;
for (i = M68K_FP0_REGNUM; i <= M68K_FPI_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
- regcache_raw_collect (regcache, regnum,
- regs + m68kbsd_fpreg_offset (i));
+ regcache_raw_collect (regcache, i,
+ regs + m68kbsd_fpreg_offset (gdbarch, i));
}
}
\f
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers (including the floating-point registers). */
-void
-fetch_inferior_registers (int regnum)
+static void
+m68kbsd_fetch_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
if (regnum == -1 || m68kbsd_gregset_supplies_p (regnum))
{
struct reg regs;
- if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) ®s, 0) == -1)
- perror_with_name ("Couldn't get registers");
+ if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
+ (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ perror_with_name (_("Couldn't get registers"));
- m68kbsd_supply_gregset (current_regcache, ®s);
+ m68kbsd_supply_gregset (regcache, ®s);
}
if (regnum == -1 || m68kbsd_fpregset_supplies_p (regnum))
{
struct fpreg fpregs;
- if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't get floating point status");
+ if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
+ (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ perror_with_name (_("Couldn't get floating point status"));
- m68kbsd_supply_fpregset (current_regcache, &fpregs);
+ m68kbsd_supply_fpregset (regcache, &fpregs);
}
}
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers (including the floating-point registers). */
-void
-store_inferior_registers (int regnum)
+static void
+m68kbsd_store_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
if (regnum == -1 || m68kbsd_gregset_supplies_p (regnum))
{
struct reg regs;
- if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) ®s, 0) == -1)
- perror_with_name ("Couldn't get registers");
+ if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
+ (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ perror_with_name (_("Couldn't get registers"));
- m68kbsd_collect_gregset (current_regcache, ®s, regnum);
+ m68kbsd_collect_gregset (regcache, ®s, regnum);
- if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) ®s, 0) == -1)
- perror_with_name ("Couldn't write registers");
+ if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
+ (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ perror_with_name (_("Couldn't write registers"));
}
if (regnum == -1 || m68kbsd_fpregset_supplies_p (regnum))
{
struct fpreg fpregs;
- if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't get floating point status");
+ if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
+ (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ perror_with_name (_("Couldn't get floating point status"));
- m68kbsd_collect_fpregset (current_regcache, &fpregs, regnum);
+ m68kbsd_collect_fpregset (regcache, &fpregs, regnum);
- if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't write floating point status");
+ if (ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid),
+ (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ perror_with_name (_("Couldn't write floating point status"));
}
}
+\f
+
+/* Support for debugging kernel virtual memory images. */
+
+#include <sys/types.h>
+#include <machine/pcb.h>
+
+#include "bsd-kvm.h"
+
+/* OpenBSD doesn't have these. */
+#ifndef PCB_REGS_FP
+#define PCB_REGS_FP 10
+#endif
+#ifndef PCB_REGS_SP
+#define PCB_REGS_SP 11
+#endif
+
+static int
+m68kbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+ int regnum, tmp;
+ int i = 0;
+
+ /* The following is true for NetBSD 1.6.2:
+
+ The pcb contains %d2...%d7, %a2...%a7 and %ps. This accounts for
+ all callee-saved registers. 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_regs[PCB_REGS_SP] == 0)
+ return 0;
+
+ for (regnum = M68K_D2_REGNUM; regnum <= M68K_D7_REGNUM; regnum++)
+ regcache_raw_supply (regcache, regnum, &pcb->pcb_regs[i++]);
+ for (regnum = M68K_A2_REGNUM; regnum <= M68K_SP_REGNUM; regnum++)
+ regcache_raw_supply (regcache, regnum, &pcb->pcb_regs[i++]);
+
+ tmp = pcb->pcb_ps & 0xffff;
+ regcache_raw_supply (regcache, M68K_PS_REGNUM, &tmp);
+
+ read_memory (pcb->pcb_regs[PCB_REGS_FP] + 4, (char *) &tmp, sizeof tmp);
+ regcache_raw_supply (regcache, M68K_PC_REGNUM, &tmp);
+
+ return 1;
+}
+\f
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_m68kbsd_nat (void);
+
+void
+_initialize_m68kbsd_nat (void)
+{
+ struct target_ops *t;
+
+ t = inf_ptrace_target ();
+ t->to_fetch_registers = m68kbsd_fetch_inferior_registers;
+ t->to_store_registers = m68kbsd_store_inferior_registers;
+ add_target (t);
+
+ /* Support debugging kernel virtual memory images. */
+ bsd_kvm_add_target (m68kbsd_supply_pcb);
+}
projects / deliverable / binutils-gdb.git / blobdiff