-/* Native-dependent code for PowerPC's running NetBSD, for GDB.
- Copyright 2002 Free Software Foundation, Inc.
+/* Native-dependent code for NetBSD/powerpc.
+
+ Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
+
Contributed by Wasabi Systems, 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 <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
+#include <machine/frame.h>
+#include <machine/pcb.h>
#include "defs.h"
+#include "gdbcore.h"
#include "inferior.h"
+#include "regcache.h"
+
#include "gdb_assert.h"
#include "ppc-tdep.h"
#include "ppcnbsd-tdep.h"
+#include "bsd-kvm.h"
+#include "inf-ptrace.h"
/* Returns true if PT_GETREGS fetches this register. */
+
static int
-getregs_supplies (int regno)
+getregs_supplies (struct gdbarch *gdbarch, int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- return ((regno >= tdep->ppc_gp0_regnum
- && regno < tdep->ppc_gp0_regnum + ppc_num_gprs)
- || regno == tdep->ppc_lr_regnum
- || regno == tdep->ppc_cr_regnum
- || regno == tdep->ppc_xer_regnum
- || regno == tdep->ppc_ctr_regnum
- || regno == PC_REGNUM);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ return ((regnum >= tdep->ppc_gp0_regnum
+ && regnum < tdep->ppc_gp0_regnum + ppc_num_gprs)
+ || regnum == tdep->ppc_lr_regnum
+ || regnum == tdep->ppc_cr_regnum
+ || regnum == tdep->ppc_xer_regnum
+ || regnum == tdep->ppc_ctr_regnum
+ || regnum == gdbarch_pc_regnum (gdbarch));
}
/* Like above, but for PT_GETFPREGS. */
+
static int
-getfpregs_supplies (int regno)
+getfpregs_supplies (struct gdbarch *gdbarch, int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* FIXME: jimb/2004-05-05: Some PPC variants don't have floating
point registers. Traditionally, GDB's register set has still
It's not clear to me how best to update this code, so this assert
will alert the first person to encounter the NetBSD/E500
combination to the problem. */
- gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
+ gdb_assert (ppc_floating_point_unit_p (gdbarch));
- return ((regno >= tdep->ppc_fp0_regnum
- && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)
- || regno == tdep->ppc_fpscr_regnum);
+ return ((regnum >= tdep->ppc_fp0_regnum
+ && regnum < tdep->ppc_fp0_regnum + ppc_num_fprs)
+ || regnum == tdep->ppc_fpscr_regnum);
}
-void
-fetch_inferior_registers (int regno)
+static void
+ppcnbsd_fetch_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
- if (regno == -1 || getregs_supplies (regno))
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+
+ if (regnum == -1 || getregs_supplies (gdbarch, regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) ®s, 0) == -1)
- perror_with_name ("Couldn't get registers");
+ (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ perror_with_name (_("Couldn't get registers"));
- ppcnbsd_supply_reg ((char *) ®s, regno);
- if (regno != -1)
- return;
+ ppc_supply_gregset (&ppcnbsd_gregset, regcache,
+ regnum, ®s, sizeof regs);
}
- if (regno == -1 || getfpregs_supplies (regno))
+ if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't get FP registers");
+ (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ perror_with_name (_("Couldn't get FP registers"));
- ppcnbsd_supply_fpreg ((char *) &fpregs, regno);
- if (regno != -1)
- return;
+ ppc_supply_fpregset (&ppcnbsd_fpregset, regcache,
+ regnum, &fpregs, sizeof fpregs);
}
}
-void
-store_inferior_registers (int regno)
+static void
+ppcnbsd_store_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
- if (regno == -1 || getregs_supplies (regno))
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+
+ if (regnum == -1 || getregs_supplies (gdbarch, regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) ®s, 0) == -1)
- perror_with_name ("Couldn't get registers");
+ (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ perror_with_name (_("Couldn't get registers"));
- ppcnbsd_fill_reg ((char *) ®s, regno);
+ ppc_collect_gregset (&ppcnbsd_gregset, regcache,
+ regnum, ®s, sizeof regs);
if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) ®s, 0) == -1)
- perror_with_name ("Couldn't write registers");
-
- if (regno != -1)
- return;
+ (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ perror_with_name (_("Couldn't write registers"));
}
- if (regno == -1 || getfpregs_supplies (regno))
+ if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't get FP registers");
+ (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ perror_with_name (_("Couldn't get FP registers"));
+
+ ppc_collect_fpregset (&ppcnbsd_fpregset, regcache,
+ regnum, &fpregs, sizeof fpregs);
- ppcnbsd_fill_fpreg ((char *) &fpregs, regno);
-
if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't set FP registers");
+ (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ perror_with_name (_("Couldn't set FP registers"));
}
}
+
+static int
+ppcnbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+ struct switchframe sf;
+ struct callframe cf;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ int i;
+
+ /* The stack pointer shouldn't be zero. */
+ if (pcb->pcb_sp == 0)
+ return 0;
+
+ read_memory (pcb->pcb_sp, (gdb_byte *)&sf, sizeof sf);
+ regcache_raw_supply (regcache, tdep->ppc_cr_regnum, &sf.cr);
+ regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 2, &sf.fixreg2);
+ for (i = 0 ; i < 19 ; i++)
+ regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 13 + i,
+ &sf.fixreg[i]);
+
+ read_memory(sf.sp, (gdb_byte *)&cf, sizeof(cf));
+ regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 30, &cf.r30);
+ regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 31, &cf.r31);
+ regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 1, &cf.sp);
+
+ read_memory(cf.sp, (gdb_byte *)&cf, sizeof(cf));
+ regcache_raw_supply (regcache, tdep->ppc_lr_regnum, &cf.lr);
+ regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch), &cf.lr);
+
+ return 1;
+}
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_ppcnbsd_nat (void);
+
+void
+_initialize_ppcnbsd_nat (void)
+{
+ struct target_ops *t;
+
+ /* Support debugging kernel virtual memory images. */
+ bsd_kvm_add_target (ppcnbsd_supply_pcb);
+
+ /* Add in local overrides. */
+ t = inf_ptrace_target ();
+ t->to_fetch_registers = ppcnbsd_fetch_inferior_registers;
+ t->to_store_registers = ppcnbsd_store_inferior_registers;
+ add_target (t);
+}
projects / external / binutils.git / blobdiff