#include "defs.h"
#include "gdbcore.h"
#include "inferior.h"
#include "regcache.h"
#include "gdb_assert.h"
#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include "m68k-tdep.h"
#include "inf-ptrace.h"
static int
m68kbsd_gregset_supplies_p (int regnum)
{
return (regnum >= M68K_D0_REGNUM && regnum <= M68K_PC_REGNUM);
}
static int
m68kbsd_fpregset_supplies_p (int regnum)
{
return (regnum >= M68K_FP0_REGNUM && regnum <= M68K_FPI_REGNUM);
}
static void
m68kbsd_supply_gregset (struct regcache *regcache, const void *gregs)
{
const char *regs = gregs;
int regnum;
for (regnum = M68K_D0_REGNUM; regnum <= M68K_PC_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum, regs + regnum * 4);
}
static void
m68kbsd_supply_fpregset (struct regcache *regcache, const void *fpregs)
{
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));
}
static void
m68kbsd_collect_gregset (const struct regcache *regcache,
void *gregs, int regnum)
{
char *regs = gregs;
int i;
for (i = M68K_D0_REGNUM; i <= M68K_PC_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
regcache_raw_collect (regcache, i, regs + i * 4);
}
}
static void
m68kbsd_collect_fpregset (struct regcache *regcache,
void *fpregs, int regnum)
{
char *regs = fpregs;
int i;
for (i = M68K_FP0_REGNUM; i <= M68K_FPI_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
regcache_raw_collect (regcache, i, regs + m68kbsd_fpreg_offset (i));
}
}
static void
m68kbsd_fetch_inferior_registers (int regnum)
{
if (regnum == -1 || m68kbsd_gregset_supplies_p (regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
m68kbsd_supply_gregset (current_regcache, ®s);
}
if (regnum == -1 || m68kbsd_fpregset_supplies_p (regnum))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
m68kbsd_supply_fpregset (current_regcache, &fpregs);
}
}
static void
m68kbsd_store_inferior_registers (int regnum)
{
if (regnum == -1 || m68kbsd_gregset_supplies_p (regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
m68kbsd_collect_gregset (current_regcache, ®s, regnum);
if (ptrace (PT_SETREGS, PIDGET (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_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
m68kbsd_collect_fpregset (current_regcache, &fpregs, regnum);
if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't write floating point status"));
}
}
#include <sys/types.h>
#include <machine/pcb.h>
#include "bsd-kvm.h"
#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;
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;
}
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);
bsd_kvm_add_target (m68kbsd_supply_pcb);
}