#include "defs.h"
#include "inferior.h"
#include "floatformat.h"
#include "regcache.h"
#include "gdb_assert.h"
#include <errno.h>
#include <stdio.h>
#include <mach.h>
#include <mach_error.h>
#include <mach/message.h>
#include <mach/exception.h>
#include "i386-tdep.h"
#include "gnu-nat.h"
#include "i387-tdep.h"
#ifdef HAVE_SYS_PROCFS_H
# include <sys/procfs.h>
# include "gregset.h"
#endif
#define REG_OFFSET(reg) offsetof (struct i386_thread_state, reg)
static int reg_offset[] =
{
REG_OFFSET (eax), REG_OFFSET (ecx), REG_OFFSET (edx), REG_OFFSET (ebx),
REG_OFFSET (uesp), REG_OFFSET (ebp), REG_OFFSET (esi), REG_OFFSET (edi),
REG_OFFSET (eip), REG_OFFSET (efl), REG_OFFSET (cs), REG_OFFSET (ss),
REG_OFFSET (ds), REG_OFFSET (es), REG_OFFSET (fs), REG_OFFSET (gs)
};
#define REG_ADDR(state, regnum) ((char *)(state) + reg_offset[regnum])
static void
fetch_fpregs (struct proc *thread)
{
mach_msg_type_number_t count = i386_FLOAT_STATE_COUNT;
struct i386_float_state state;
error_t err;
err = thread_get_state (thread->port, i386_FLOAT_STATE,
(thread_state_t) &state, &count);
if (err)
{
warning ("Couldn't fetch floating-point state from %s",
proc_string (thread));
return;
}
if (!state.initialized)
{
int i;
for (i = FP0_REGNUM; i <= FOP_REGNUM; i++)
supply_register (i, NULL);
return;
}
i387_supply_fsave (current_regcache, -1, state.hw_state);
}
#ifdef HAVE_SYS_PROCFS_H
void
supply_gregset (gdb_gregset_t *gregs)
{
int i;
for (i = 0; i < I386_NUM_GREGS; i++)
supply_register (i, REG_ADDR (gregs, i));
}
void
supply_fpregset (gdb_fpregset_t *fpregs)
{
i387_supply_fsave (current_regcache, -1, fpregs);
}
#endif
void
gnu_fetch_registers (int regno)
{
struct proc *thread;
inf_update_procs (current_inferior);
thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
if (!thread)
error ("Can't fetch registers from thread %d: No such thread",
PIDGET (inferior_ptid));
if (regno < I386_NUM_GREGS || regno == -1)
{
thread_state_t state;
state = proc_get_state (thread, 0);
if (!state)
{
warning ("Couldn't fetch registers from %s",
proc_string (thread));
return;
}
if (regno == -1)
{
int i;
proc_debug (thread, "fetching all register");
for (i = 0; i < I386_NUM_GREGS; i++)
supply_register (i, REG_ADDR (state, i));
thread->fetched_regs = ~0;
}
else
{
proc_debug (thread, "fetching register %s", REGISTER_NAME (regno));
supply_register (regno, REG_ADDR (state, regno));
thread->fetched_regs |= (1 << regno);
}
}
if (regno >= I386_NUM_GREGS || regno == -1)
{
proc_debug (thread, "fetching floating-point registers");
fetch_fpregs (thread);
}
}
static void
store_fpregs (struct proc *thread, int regno)
{
mach_msg_type_number_t count = i386_FLOAT_STATE_COUNT;
struct i386_float_state state;
error_t err;
err = thread_get_state (thread->port, i386_FLOAT_STATE,
(thread_state_t) &state, &count);
if (err)
{
warning ("Couldn't fetch floating-point state from %s",
proc_string (thread));
return;
}
i387_fill_fsave (state.hw_state, regno);
err = thread_set_state (thread->port, i386_FLOAT_STATE,
(thread_state_t) &state, i386_FLOAT_STATE_COUNT);
if (err)
{
warning ("Couldn't store floating-point state into %s",
proc_string (thread));
return;
}
}
void
gnu_store_registers (int regno)
{
struct proc *thread;
inf_update_procs (current_inferior);
thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
if (!thread)
error ("Couldn't store registers into thread %d: No such thread",
PIDGET (inferior_ptid));
if (regno < I386_NUM_GREGS || regno == -1)
{
thread_state_t state;
thread_state_data_t old_state;
int was_aborted = thread->aborted;
int was_valid = thread->state_valid;
int trace;
if (!was_aborted && was_valid)
memcpy (&old_state, &thread->state, sizeof (old_state));
state = proc_get_state (thread, 1);
if (!state)
{
warning ("Couldn't store registers into %s", proc_string (thread));
return;
}
trace = ((struct i386_thread_state *)state)->efl & 0x100;
if (!was_aborted && was_valid)
{
int check_regno;
for (check_regno = 0; check_regno < I386_NUM_GREGS; check_regno++)
if ((thread->fetched_regs & (1 << check_regno))
&& memcpy (REG_ADDR (&old_state, check_regno),
REG_ADDR (state, check_regno),
DEPRECATED_REGISTER_RAW_SIZE (check_regno)))
{
warning ("Register %s changed after the thread was aborted",
REGISTER_NAME (check_regno));
if (regno >= 0 && regno != check_regno)
supply_register (check_regno, REG_ADDR (state, check_regno));
else
warning ("... also writing this register! Suspicious...");
}
}
#define fill(state, regno) \
memcpy (REG_ADDR(state, regno), &deprecated_registers[DEPRECATED_REGISTER_BYTE (regno)], \
DEPRECATED_REGISTER_RAW_SIZE (regno))
if (regno == -1)
{
int i;
proc_debug (thread, "storing all registers");
for (i = 0; i < I386_NUM_GREGS; i++)
if (deprecated_register_valid[i])
fill (state, i);
}
else
{
proc_debug (thread, "storing register %s", REGISTER_NAME (regno));
gdb_assert (deprecated_register_valid[regno]);
fill (state, regno);
}
((struct i386_thread_state *)state)->efl &= ~0x100;
((struct i386_thread_state *)state)->efl |= trace;
}
#undef fill
if (regno >= I386_NUM_GREGS || regno == -1)
{
proc_debug (thread, "storing floating-point registers");
store_fpregs (thread, regno);
}
}