/* Lay out the register cache.
- NOTE: cagney/2002-05-22: Only register_type() is used when
+ NOTE: cagney/2002-05-22: Only register_type () is used when
constructing the register cache. It is assumed that the
register's raw size, virtual size and type length are all the
same. */
}
}
-regcache::regcache (gdbarch *gdbarch, const address_space *aspace_)
+regcache::regcache (process_stratum_target *target, gdbarch *gdbarch,
+ const address_space *aspace_)
/* The register buffers. A read/write register cache can only hold
[0 .. gdbarch_num_regs). */
- : detached_regcache (gdbarch, false), m_aspace (aspace_)
+ : detached_regcache (gdbarch, false), m_aspace (aspace_), m_target (target)
{
m_ptid = minus_one_ptid;
}
std::forward_list<regcache *> regcache::current_regcache;
struct regcache *
-get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch,
+get_thread_arch_aspace_regcache (process_stratum_target *target,
+ ptid_t ptid, struct gdbarch *gdbarch,
struct address_space *aspace)
{
+ gdb_assert (target != nullptr);
+
for (const auto ®cache : regcache::current_regcache)
- if (regcache->ptid () == ptid && regcache->arch () == gdbarch)
+ if (regcache->target () == target
+ && regcache->ptid () == ptid
+ && regcache->arch () == gdbarch)
return regcache;
- regcache *new_regcache = new regcache (gdbarch, aspace);
+ regcache *new_regcache = new regcache (target, gdbarch, aspace);
regcache::current_regcache.push_front (new_regcache);
new_regcache->set_ptid (ptid);
}
struct regcache *
-get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch)
+get_thread_arch_regcache (process_stratum_target *target, ptid_t ptid,
+ struct gdbarch *gdbarch)
{
+ scoped_restore_current_inferior restore_current_inferior;
+ set_current_inferior (find_inferior_ptid (target, ptid));
address_space *aspace = target_thread_address_space (ptid);
- return get_thread_arch_aspace_regcache (ptid, gdbarch, aspace);
+ return get_thread_arch_aspace_regcache (target, ptid, gdbarch, aspace);
}
+static process_stratum_target *current_thread_target;
static ptid_t current_thread_ptid;
static struct gdbarch *current_thread_arch;
struct regcache *
-get_thread_regcache (ptid_t ptid)
+get_thread_regcache (process_stratum_target *target, ptid_t ptid)
{
- if (!current_thread_arch || current_thread_ptid != ptid)
+ if (!current_thread_arch
+ || target != current_thread_target
+ || current_thread_ptid != ptid)
{
+ gdb_assert (ptid != null_ptid);
+
current_thread_ptid = ptid;
+ current_thread_target = target;
+
+ scoped_restore_current_inferior restore_current_inferior;
+ set_current_inferior (find_inferior_ptid (target, ptid));
current_thread_arch = target_thread_architecture (ptid);
}
- return get_thread_arch_regcache (ptid, current_thread_arch);
+ return get_thread_arch_regcache (target, ptid, current_thread_arch);
}
/* See regcache.h. */
struct regcache *
get_thread_regcache (thread_info *thread)
{
- return get_thread_regcache (thread->ptid);
+ return get_thread_regcache (thread->inf->process_target (),
+ thread->ptid);
}
struct regcache *
struct regcache *
get_thread_regcache_for_ptid (ptid_t ptid)
{
- return get_thread_regcache (ptid);
+ /* This function doesn't take a process_stratum_target parameter
+ because it's a gdbsupport/ routine implemented by both gdb and
+ gdbserver. It always refers to a ptid of the current target. */
+ process_stratum_target *proc_target = current_inferior ()->process_target ();
+ return get_thread_regcache (proc_target, ptid);
}
/* Observer for the target_changed event. */
Indicate that registers may have changed, so invalidate the cache. */
void
-registers_changed_ptid (ptid_t ptid)
+registers_changed_ptid (process_stratum_target *target, ptid_t ptid)
{
for (auto oit = regcache::current_regcache.before_begin (),
it = std::next (oit);
it != regcache::current_regcache.end ();
)
{
- if ((*it)->ptid ().matches (ptid))
+ struct regcache *regcache = *it;
+ if ((target == nullptr || regcache->target () == target)
+ && regcache->ptid ().matches (ptid))
{
- delete *it;
+ delete regcache;
it = regcache::current_regcache.erase_after (oit);
}
else
oit = it++;
}
- if (current_thread_ptid.matches (ptid))
+ if ((target == nullptr || current_thread_target == target)
+ && current_thread_ptid.matches (ptid))
{
+ current_thread_target = NULL;
current_thread_ptid = null_ptid;
current_thread_arch = NULL;
}
- if (inferior_ptid.matches (ptid))
+ if ((target == nullptr || current_inferior ()->process_target () == target)
+ && inferior_ptid.matches (ptid))
{
/* We just deleted the regcache of the current thread. Need to
forget about any frames we have cached, too. */
void
registers_changed_thread (thread_info *thread)
{
- registers_changed_ptid (thread->ptid);
+ registers_changed_ptid (thread->inf->process_target (), thread->ptid);
}
void
registers_changed (void)
{
- registers_changed_ptid (minus_one_ptid);
+ registers_changed_ptid (nullptr, minus_one_ptid);
}
void
return pc_val;
}
+/* See gdbsupport/common-regcache.h. */
+
+CORE_ADDR
+regcache_read_pc_protected (regcache *regcache)
+{
+ CORE_ADDR pc;
+ try
+ {
+ pc = regcache_read_pc (regcache);
+ }
+ catch (const gdb_exception_error &ex)
+ {
+ pc = 0;
+ }
+
+ return pc;
+}
+
void
regcache_write_pc (struct regcache *regcache, CORE_ADDR pc)
{
{
static const char blt[] = "builtin_type";
- t = TYPE_NAME (register_type (m_gdbarch, regnum));
+ t = register_type (m_gdbarch, regnum)->name ();
if (t == NULL)
{
if (!footnote_register_type_name_null)
}
};
+/* Wrapper around get_thread_arch_aspace_regcache that does some self checks. */
+
+static void
+test_get_thread_arch_aspace_regcache (process_stratum_target *target,
+ ptid_t ptid, struct gdbarch *gdbarch,
+ address_space *aspace)
+{
+ struct regcache *regcache
+ = get_thread_arch_aspace_regcache (target, ptid, gdbarch, aspace);
+ SELF_CHECK (regcache != NULL);
+ SELF_CHECK (regcache->target () == target);
+ SELF_CHECK (regcache->ptid () == ptid);
+ SELF_CHECK (regcache->aspace () == aspace);
+}
+
static void
current_regcache_test (void)
{
ptid_t ptid1 (1), ptid2 (2), ptid3 (3);
- /* Get regcache from ptid1, a new regcache is added to
- current_regcache. */
- regcache *regcache = get_thread_arch_aspace_regcache (ptid1,
- target_gdbarch (),
- NULL);
+ test_target_ops test_target1;
+ test_target_ops test_target2;
- SELF_CHECK (regcache != NULL);
- SELF_CHECK (regcache->ptid () == ptid1);
+ /* Get regcache from (target1,ptid1), a new regcache is added to
+ current_regcache. */
+ test_get_thread_arch_aspace_regcache (&test_target1, ptid1,
+ target_gdbarch (),
+ NULL);
SELF_CHECK (regcache_access::current_regcache_size () == 1);
- /* Get regcache from ptid2, a new regcache is added to
+ /* Get regcache from (target1,ptid2), a new regcache is added to
current_regcache. */
- regcache = get_thread_arch_aspace_regcache (ptid2,
- target_gdbarch (),
- NULL);
- SELF_CHECK (regcache != NULL);
- SELF_CHECK (regcache->ptid () == ptid2);
+ test_get_thread_arch_aspace_regcache (&test_target1, ptid2,
+ target_gdbarch (),
+ NULL);
SELF_CHECK (regcache_access::current_regcache_size () == 2);
- /* Get regcache from ptid3, a new regcache is added to
+ /* Get regcache from (target1,ptid3), a new regcache is added to
current_regcache. */
- regcache = get_thread_arch_aspace_regcache (ptid3,
- target_gdbarch (),
- NULL);
- SELF_CHECK (regcache != NULL);
- SELF_CHECK (regcache->ptid () == ptid3);
+ test_get_thread_arch_aspace_regcache (&test_target1, ptid3,
+ target_gdbarch (),
+ NULL);
SELF_CHECK (regcache_access::current_regcache_size () == 3);
- /* Get regcache from ptid2 again, nothing is added to
+ /* Get regcache from (target1,ptid2) again, nothing is added to
current_regcache. */
- regcache = get_thread_arch_aspace_regcache (ptid2,
- target_gdbarch (),
- NULL);
- SELF_CHECK (regcache != NULL);
- SELF_CHECK (regcache->ptid () == ptid2);
+ test_get_thread_arch_aspace_regcache (&test_target1, ptid2,
+ target_gdbarch (),
+ NULL);
SELF_CHECK (regcache_access::current_regcache_size () == 3);
- /* Mark ptid2 is changed, so regcache of ptid2 should be removed from
- current_regcache. */
- registers_changed_ptid (ptid2);
- SELF_CHECK (regcache_access::current_regcache_size () == 2);
+ /* Get regcache from (target2,ptid2), a new regcache is added to
+ current_regcache, since this time we're using a differen
+ target. */
+ test_get_thread_arch_aspace_regcache (&test_target2, ptid2,
+ target_gdbarch (),
+ NULL);
+ SELF_CHECK (regcache_access::current_regcache_size () == 4);
+
+ /* Mark that (target1,ptid2) changed. The regcache of (target1,
+ ptid2) should be removed from current_regcache. */
+ registers_changed_ptid (&test_target1, ptid2);
+ SELF_CHECK (regcache_access::current_regcache_size () == 3);
+
+ /* Get the regcache from (target2,ptid2) again, confirming the
+ registers_changed_ptid call above did not delete it. */
+ test_get_thread_arch_aspace_regcache (&test_target2, ptid2,
+ target_gdbarch (),
+ NULL);
+ SELF_CHECK (regcache_access::current_regcache_size () == 3);
+
+ /* Confirm that marking all regcaches of all targets as changed
+ clears current_regcache. */
+ registers_changed_ptid (nullptr, minus_one_ptid);
+ SELF_CHECK (regcache_access::current_regcache_size () == 0);
}
class target_ops_no_register : public test_target_ops
class readwrite_regcache : public regcache
{
public:
- readwrite_regcache (struct gdbarch *gdbarch)
- : regcache (gdbarch, nullptr)
+ readwrite_regcache (process_stratum_target *target,
+ struct gdbarch *gdbarch)
+ : regcache (target, gdbarch, nullptr)
{}
};
break;
}
- readwrite_regcache readwrite (gdbarch);
+ readwrite_regcache readwrite (&mock_target, gdbarch);
gdb::def_vector<gdb_byte> buf (register_size (gdbarch, nonzero_regnum));
readwrite.raw_read (nonzero_regnum, buf.data ());
}
} pop_targets;
- readwrite_regcache readwrite (gdbarch);
+ readwrite_regcache readwrite (&mock_target, gdbarch);
const int num_regs = gdbarch_num_cooked_regs (gdbarch);
std::vector<gdb_byte> buf (register_size (gdbarch, regnum), 0);
const auto type = register_type (gdbarch, regnum);
- if (TYPE_CODE (type) == TYPE_CODE_FLT
- || TYPE_CODE (type) == TYPE_CODE_DECFLOAT)
+ if (type->code () == TYPE_CODE_FLT
+ || type->code () == TYPE_CODE_DECFLOAT)
{
/* Generate valid float format. */
target_float_from_string (expected.data (), type, "1.25");
}
- else if (TYPE_CODE (type) == TYPE_CODE_INT
- || TYPE_CODE (type) == TYPE_CODE_ARRAY
- || TYPE_CODE (type) == TYPE_CODE_PTR
- || TYPE_CODE (type) == TYPE_CODE_UNION
- || TYPE_CODE (type) == TYPE_CODE_STRUCT)
+ else if (type->code () == TYPE_CODE_INT
+ || type->code () == TYPE_CODE_ARRAY
+ || type->code () == TYPE_CODE_PTR
+ || type->code () == TYPE_CODE_UNION
+ || type->code () == TYPE_CODE_STRUCT)
{
if (bfd_arch == bfd_arch_ia64
|| (regnum >= gdbarch_num_regs (gdbarch)
expected[j] = j;
}
}
- else if (TYPE_CODE (type) == TYPE_CODE_FLAGS)
+ else if (type->code () == TYPE_CODE_FLAGS)
{
/* No idea how to test flags. */
continue;
} // namespace selftests
#endif /* GDB_SELF_TEST */
+void _initialize_regcache ();
void
-_initialize_regcache (void)
+_initialize_regcache ()
{
regcache_descr_handle
= gdbarch_data_register_post_init (init_regcache_descr);