/* Store register REGNO back into the child process. If REGNO is -1,
do this for all registers (including the floating point and SSE
registers). */
static void
i386_linux_store_inferior_registers (struct target_ops *ops,
struct regcache *regcache, int regno)
{
int tid;
/* Use the old method of poking around in `struct user' if the
SETREGS request isn't available. */
if (!have_ptrace_getregs)
{
int i;
for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
if (regno == -1 || regno == i)
store_register (regcache, i);
return;
}
/* GNU/Linux LWP ID's are process ID's. */
tid = TIDGET (inferior_ptid);
if (tid == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
/* Use the PTRACE_SETFPXREGS requests whenever possible, since it
transfers more registers in one system call. But remember that
store_fpxregs can fail, and return zero. */
if (regno == -1)
{
store_regs (regcache, tid, regno);
if (store_fpxregs (regcache, tid, regno))
return;
store_fpregs (regcache, tid, regno);
return;
}
if (GETREGS_SUPPLIES (regno))
{
store_regs (regcache, tid, regno);
return;
}
if (GETFPXREGS_SUPPLIES (regno))
{
if (store_fpxregs (regcache, tid, regno))
return;
/* Either our processor or our kernel doesn't support the SSE
registers, so just write the FP registers in the traditional
way. */
store_fpregs (regcache, tid, regno);
return;
}
internal_error (__FILE__, __LINE__,
_("Got request to store bad register number %d."), regno);
}
static void
i386_linux_fetch_inferior_registers (struct target_ops *ops,
struct regcache *regcache, int regno)
{
int tid;
/* Use the old method of peeking around in `struct user' if the
GETREGS request isn't available. */
if (!have_ptrace_getregs)
{
int i;
for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
if (regno == -1 || regno == i)
fetch_register (regcache, i);
return;
}
/* GNU/Linux LWP ID's are process ID's. */
tid = ptid_get_lwp (inferior_ptid);
if (tid == 0)
tid = ptid_get_pid (inferior_ptid); /* Not a threaded program. */
/* Use the PTRACE_GETFPXREGS request whenever possible, since it
transfers more registers in one system call, and we'll cache the
results. But remember that fetch_fpxregs can fail, and return
zero. */
if (regno == -1)
{
fetch_regs (regcache, tid);
/* The call above might reset `have_ptrace_getregs'. */
if (!have_ptrace_getregs)
{
i386_linux_fetch_inferior_registers (ops, regcache, regno);
return;
}
if (fetch_xstateregs (regcache, tid))
return;
if (fetch_fpxregs (regcache, tid))
return;
fetch_fpregs (regcache, tid);
return;
}
if (GETREGS_SUPPLIES (regno))
{
fetch_regs (regcache, tid);
return;
}
if (GETXSTATEREGS_SUPPLIES (regno))
{
if (fetch_xstateregs (regcache, tid))
return;
}
if (GETFPXREGS_SUPPLIES (regno))
{
if (fetch_fpxregs (regcache, tid))
return;
/* Either our processor or our kernel doesn't support the SSE
registers, so read the FP registers in the traditional way,
and fill the SSE registers with dummy values. It would be
more graceful to handle differences in the register set using
gdbarch. Until then, this will at least make things work
plausibly. */
fetch_fpregs (regcache, tid);
return;
}
internal_error (__FILE__, __LINE__,
_("Got request for bad register number %d."), regno);
}
