#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include <machine/frame.h>
#include <machine/pcb.h>
#include "defs.h"
#include "inferior.h"
#include "gdb_assert.h"
#include "gdbcore.h"
#include "regcache.h"
#include "bsd-kvm.h"
#include "ppc-tdep.h"
#include "ppcnbsd-tdep.h"
#include "inf-ptrace.h"
static int
getregs_supplies (int regno)
{
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);
}
static int
getfpregs_supplies (int regno)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
return ((regno >= tdep->ppc_fp0_regnum
&& regno < tdep->ppc_fp0_regnum + ppc_num_fprs)
|| regno == tdep->ppc_fpscr_regnum);
}
static void
ppcnbsd_fetch_inferior_registers (int regno)
{
if (regno == -1 || getregs_supplies (regno))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
ppcnbsd_supply_reg ((char *) ®s, regno);
if (regno != -1)
return;
}
if (regno == -1 || getfpregs_supplies (regno))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get FP registers"));
ppcnbsd_supply_fpreg ((char *) &fpregs, regno);
if (regno != -1)
return;
}
}
static void
ppcnbsd_store_inferior_registers (int regno)
{
if (regno == -1 || getregs_supplies (regno))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
ppcnbsd_fill_reg ((char *) ®s, regno);
if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't write registers"));
if (regno != -1)
return;
}
if (regno == -1 || getfpregs_supplies (regno))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get FP registers"));
ppcnbsd_fill_fpreg ((char *) &fpregs, regno);
if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
(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_tdep *tdep = gdbarch_tdep (current_gdbarch);
int i;
if (pcb->pcb_sp == 0)
return 0;
read_memory (pcb->pcb_sp, (char *) &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, (char *)&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, (char *)&cf, sizeof(cf));
regcache_raw_supply (regcache, tdep->ppc_lr_regnum, &cf.lr);
regcache_raw_supply (regcache, PC_REGNUM, &cf.lr);
return 1;
}
void _initialize_ppcnbsd_nat (void);
void
_initialize_ppcnbsd_nat (void)
{
struct target_ops *t;
bsd_kvm_add_target (ppcnbsd_supply_pcb);
t = inf_ptrace_target ();
t->to_fetch_registers = ppcnbsd_fetch_inferior_registers;
t->to_store_registers = ppcnbsd_store_inferior_registers;
add_target (t);
}