/* Native-dependent code for Alpha BSD's.
- Copyright (C) 2000, 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
This file is part of GDB.
supply/fill routines. */
void
-supply_gregset (gregset_t *gregsetp)
+supply_gregset (struct regcache *regcache, const gregset_t *gregsetp)
{
- alphabsd_supply_reg ((char *) gregsetp, -1);
+ alphabsd_supply_reg (regcache, (const char *) gregsetp, -1);
}
void
-fill_gregset (gregset_t *gregsetp, int regno)
+fill_gregset (const struct regcache *regcache, gregset_t *gregsetp, int regno)
{
- alphabsd_fill_reg ((char *) gregsetp, regno);
+ alphabsd_fill_reg (regcache, (char *) gregsetp, regno);
}
void
-supply_fpregset (fpregset_t *fpregsetp)
+supply_fpregset (struct regcache *regcache, const fpregset_t *fpregsetp)
{
- alphabsd_supply_fpreg ((char *) fpregsetp, -1);
+ alphabsd_supply_fpreg (regcache, (const char *) fpregsetp, -1);
}
void
-fill_fpregset (fpregset_t *fpregsetp, int regno)
+fill_fpregset (const struct regcache *regcache, fpregset_t *fpregsetp, int regno)
{
- alphabsd_fill_fpreg ((char *) fpregsetp, regno);
+ alphabsd_fill_fpreg (regcache, (char *) fpregsetp, regno);
}
\f
/* Determine if PT_GETREGS fetches this register. */
for all registers (including the floating point registers). */
static void
-alphabsd_fetch_inferior_registers (int regno)
+alphabsd_fetch_inferior_registers (struct regcache *regcache, int regno)
{
if (regno == -1 || getregs_supplies (regno))
{
(PTRACE_TYPE_ARG3) &gregs, 0) == -1)
perror_with_name (_("Couldn't get registers"));
- alphabsd_supply_reg ((char *) &gregs, regno);
+ alphabsd_supply_reg (regcache, (char *) &gregs, regno);
if (regno != -1)
return;
}
- if (regno == -1 || regno >= FP0_REGNUM)
+ if (regno == -1 || regno >= gdbarch_fp0_regnum (current_gdbarch))
{
struct fpreg fpregs;
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
- alphabsd_supply_fpreg ((char *) &fpregs, regno);
+ alphabsd_supply_fpreg (regcache, (char *) &fpregs, regno);
}
}
this for all registers (including the floating point registers). */
static void
-alphabsd_store_inferior_registers (int regno)
+alphabsd_store_inferior_registers (struct regcache *regcache, int regno)
{
if (regno == -1 || getregs_supplies (regno))
{
(PTRACE_TYPE_ARG3) &gregs, 0) == -1)
perror_with_name (_("Couldn't get registers"));
- alphabsd_fill_reg ((char *) &gregs, regno);
+ alphabsd_fill_reg (regcache, (char *) &gregs, regno);
if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &gregs, 0) == -1)
return;
}
- if (regno == -1 || regno >= FP0_REGNUM)
+ if (regno == -1 || regno >= gdbarch_fp0_regnum (current_gdbarch))
{
struct fpreg fpregs;
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
- alphabsd_fill_fpreg ((char *) &fpregs, regno);
+ alphabsd_fill_fpreg (regcache, (char *) &fpregs, regno);
if (ptrace (PT_SETFPREGS, PIDGET (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 <sys/signal.h>
+#include <machine/pcb.h>
+
+#include "bsd-kvm.h"
+
+static int
+alphabsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+ int regnum;
+
+ /* The following is true for OpenBSD 3.9:
+
+ The pcb contains the register state at the context switch inside
+ cpu_switch(). */
+
+ /* The stack pointer shouldn't be zero. */
+ if (pcb->pcb_hw.apcb_ksp == 0)
+ return 0;
+
+ regcache_raw_supply (regcache, ALPHA_SP_REGNUM, &pcb->pcb_hw.apcb_ksp);
+
+ for (regnum = ALPHA_S0_REGNUM; regnum < ALPHA_A0_REGNUM; regnum++)
+ regcache_raw_supply (regcache, regnum,
+ &pcb->pcb_context[regnum - ALPHA_S0_REGNUM]);
+ regcache_raw_supply (regcache, ALPHA_RA_REGNUM, &pcb->pcb_context[7]);
+
+ return 1;
+}
+\f
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_alphabsd_nat (void);
t->to_fetch_registers = alphabsd_fetch_inferior_registers;
t->to_store_registers = alphabsd_store_inferior_registers;
add_target (t);
+
+ /* Support debugging kernel virtual memory images. */
+ bsd_kvm_add_target (alphabsd_supply_pcb);
}