static void
store_fpregs (const struct regcache *regcache)
{
int ret, regno, tid;
gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
{
warning (_("Unable to fetch the floating point registers."));
return;
}
/* Store fpsr. */
if (regcache_valid_p (regcache, ARM_FPS_REGNUM))
regcache_raw_collect (regcache, ARM_FPS_REGNUM, fp + NWFPE_FPSR_OFFSET);
/* Store the floating point registers. */
for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
if (regcache_valid_p (regcache, regno))
collect_nwfpe_register (regcache, regno, fp);
ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
if (ret < 0)
{
warning (_("Unable to store floating point registers."));
return;
}
}
static void
store_regs (const struct regcache *regcache)
{
int ret, regno, tid;
elf_gregset_t regs;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Fetch the general registers. */
ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
if (ret < 0)
{
warning (_("Unable to fetch general registers."));
return;
}
for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++)
{
if (regcache_valid_p (regcache, regno))
regcache_raw_collect (regcache, regno, (char *) ®s[regno]);
}
if (arm_apcs_32 && regcache_valid_p (regcache, ARM_PS_REGNUM))
regcache_raw_collect (regcache, ARM_PS_REGNUM,
(char *) ®s[ARM_CPSR_GREGNUM]);
ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
if (ret < 0)
{
warning (_("Unable to store general registers."));
return;
}
}
static int
register_changed_p (int regnum, struct regcache *prev_regs,
struct regcache *this_regs)
{
struct gdbarch *gdbarch = get_regcache_arch (this_regs);
gdb_byte prev_buffer[MAX_REGISTER_SIZE];
gdb_byte this_buffer[MAX_REGISTER_SIZE];
/* Registers not valid in this frame return count as unchanged. */
if (!regcache_valid_p (this_regs, regnum))
return 0;
/* First time through or after gdbarch change consider all registers as
changed. Same for registers not valid in the previous frame. */
if (!prev_regs || get_regcache_arch (prev_regs) != gdbarch
|| !regcache_valid_p (prev_regs, regnum))
return 1;
/* Get register contents and compare. */
regcache_cooked_read (prev_regs, regnum, prev_buffer);
regcache_cooked_read (this_regs, regnum, this_buffer);
return memcmp (prev_buffer, this_buffer,
register_size (gdbarch, regnum)) != 0;
}
static void
store_wmmx_regs (const struct regcache *regcache)
{
char regbuf[IWMMXT_REGS_SIZE];
int ret, regno, tid;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
ret = ptrace (PTRACE_GETWMMXREGS, tid, 0, regbuf);
if (ret < 0)
{
warning (_("Unable to fetch WMMX registers."));
return;
}
for (regno = 0; regno < 16; regno++)
if (regcache_valid_p (regcache, regno + ARM_WR0_REGNUM))
regcache_raw_collect (regcache, regno + ARM_WR0_REGNUM,
®buf[regno * 8]);
for (regno = 0; regno < 2; regno++)
if (regcache_valid_p (regcache, regno + ARM_WCSSF_REGNUM))
regcache_raw_collect (regcache, regno + ARM_WCSSF_REGNUM,
®buf[16 * 8 + regno * 4]);
for (regno = 0; regno < 4; regno++)
if (regcache_valid_p (regcache, regno + ARM_WCGR0_REGNUM))
regcache_raw_collect (regcache, regno + ARM_WCGR0_REGNUM,
®buf[16 * 8 + 2 * 4 + regno * 4]);
ret = ptrace (PTRACE_SETWMMXREGS, tid, 0, regbuf);
if (ret < 0)
{
warning (_("Unable to store WMMX registers."));
return;
}
}
/* Store at least register REGNO, or all regs if REGNO == -1. */
static void
gnu_store_registers (struct target_ops *ops,
struct regcache *regcache, int regno)
{
struct proc *thread;
struct gdbarch *gdbarch = get_regcache_arch (regcache);
/* Make sure we know about new threads. */
inf_update_procs (gnu_current_inf);
thread = inf_tid_to_thread (gnu_current_inf,
ptid_get_tid (inferior_ptid));
if (!thread)
error (_("Couldn't store registers into thread %s: No such thread"),
target_pid_to_str (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;
}
/* Save the T bit. We might try to restore the %eflags register
below, but changing the T bit would seriously confuse GDB. */
trace = ((struct i386_thread_state *)state)->efl & 0x100;
if (!was_aborted && was_valid)
/* See which registers have changed after aborting the thread. */
{
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),
register_size (gdbarch, check_regno)))
/* Register CHECK_REGNO has changed! Ack! */
{
warning (_("Register %s changed after the thread was aborted"),
gdbarch_register_name (gdbarch, check_regno));
if (regno >= 0 && regno != check_regno)
/* Update GDB's copy of the register. */
regcache_raw_supply (regcache, check_regno,
REG_ADDR (state, check_regno));
else
warning (_("... also writing this register! Suspicious..."));
}
}
if (regno == -1)
{
int i;
proc_debug (thread, "storing all registers");
for (i = 0; i < I386_NUM_GREGS; i++)
if (regcache_valid_p (regcache, i))
regcache_raw_collect (regcache, i, REG_ADDR (state, i));
}
else
{
proc_debug (thread, "storing register %s",
gdbarch_register_name (gdbarch, regno));
gdb_assert (regcache_valid_p (regcache, regno));
regcache_raw_collect (regcache, regno, REG_ADDR (state, regno));
}
/* Restore the T bit. */
((struct i386_thread_state *)state)->efl &= ~0x100;
((struct i386_thread_state *)state)->efl |= trace;
}
if (regno >= I386_NUM_GREGS || regno == -1)
{
proc_debug (thread, "storing floating-point registers");
store_fpregs (regcache, thread, regno);
}
}
