#include "gdbthread.h"
#include "target.h"
#include "test-target.h"
+#include "scoped-mock-context.h"
#include "gdbarch.h"
#include "gdbcmd.h"
#include "regcache.h"
/* 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. */
recording if the register values have been changed (eg. by the
user). Therefore all registers must be written back to the
target when appropriate. */
-std::forward_list<regcache *> regcache::current_regcache;
+
+/* Key for the hash map keeping the regcaches. */
+
+struct target_ptid_arch
+{
+ target_ptid_arch (process_stratum_target *target, ptid_t ptid, gdbarch *arch)
+ : target (target), ptid (ptid), arch (arch)
+ {}
+
+ process_stratum_target *target;
+ ptid_t ptid;
+ gdbarch *arch;
+
+ bool operator== (const target_ptid_arch &other) const
+ {
+ return (this->target == other.target
+ && this->ptid == other.ptid
+ && this->arch == other.arch);
+ }
+};
+
+/* Hash function for target_ptid_arch. */
+
+struct hash_target_ptid_arch
+{
+ size_t operator() (const target_ptid_arch &val) const
+ {
+ hash_ptid h_ptid;
+ std::hash<long> h_long;
+ return h_ptid (val.ptid) + h_long ((long) val.arch);
+ }
+};
+
+using target_ptid_arch_regcache_map
+ = std::unordered_map<target_ptid_arch, regcache *, hash_target_ptid_arch>;
+
+/* Hash map containing the regcaches. */
+
+static target_ptid_arch_regcache_map the_regcaches;
struct regcache *
get_thread_arch_aspace_regcache (process_stratum_target *target,
- ptid_t ptid, struct gdbarch *gdbarch,
+ ptid_t ptid, gdbarch *arch,
struct address_space *aspace)
{
gdb_assert (target != nullptr);
- for (const auto ®cache : regcache::current_regcache)
- if (regcache->target () == target
- && regcache->ptid () == ptid
- && regcache->arch () == gdbarch)
- return regcache;
+ /* Look up a regcache for this (target, ptid, arch). */
+ target_ptid_arch key (target, ptid, arch);
+ auto it = the_regcaches.find (key);
+ if (it != the_regcaches.end ())
+ return it->second;
- regcache *new_regcache = new regcache (target, gdbarch, aspace);
-
- regcache::current_regcache.push_front (new_regcache);
+ /* It does not exist, create it. */
+ regcache *new_regcache = new regcache (target, arch, aspace);
new_regcache->set_ptid (ptid);
+ the_regcaches[key] = new_regcache;
+
return new_regcache;
}
/* Update global variables old ptids to hold NEW_PTID if they were
holding OLD_PTID. */
-void
-regcache::regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid)
+static void
+regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid)
{
- for (auto ®cache : regcache::current_regcache)
+ std::vector<target_ptid_arch> keys_to_update;
+
+ /* Find all the regcaches to updates. */
+ for (auto &pair : the_regcaches)
{
- if (regcache->ptid () == old_ptid)
- regcache->set_ptid (new_ptid);
+ regcache *rc = pair.second;
+ if (rc->ptid () == old_ptid)
+ keys_to_update.push_back (pair.first);
+ }
+
+ for (const target_ptid_arch &old_key : keys_to_update)
+ {
+ /* Get the regcache, delete the hash map entry. */
+ auto it = the_regcaches.find (old_key);
+ gdb_assert (it != the_regcaches.end ());
+ regcache *rc = it->second;
+
+ the_regcaches.erase (it);
+
+ /* Insert the regcache back, with an updated key. */
+ target_ptid_arch new_key (rc->target (), new_ptid, rc->arch ());
+ rc->set_ptid (new_ptid);
+ the_regcaches[new_key] = rc;
}
}
void
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 we have a non-minus_one_ptid, we must have a non-NULL target. */
+ if (ptid != minus_one_ptid)
+ gdb_assert (target != nullptr);
+
+ for (auto iter = the_regcaches.begin (); iter != the_regcaches.end (); )
{
- struct regcache *regcache = *it;
- if ((target == nullptr || regcache->target () == target)
- && regcache->ptid ().matches (ptid))
+ regcache *rc = iter->second;
+
+ if ((target == nullptr || rc->target () == target)
+ && rc->ptid ().matches (ptid))
{
- delete regcache;
- it = regcache::current_regcache.erase_after (oit);
+ delete iter->second;
+ iter = the_regcaches.erase (iter);
}
else
- oit = it++;
+ ++iter;
}
if ((target == nullptr || current_thread_target == target)
{
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)
static size_t
current_regcache_size ()
{
- return std::distance (regcache::current_regcache.begin (),
- regcache::current_regcache.end ());
+ return the_regcaches.size ();
}
};
static void
cooked_read_test (struct gdbarch *gdbarch)
{
- /* Error out if debugging something, because we're going to push the
- test target, which would pop any existing target. */
- if (current_top_target ()->stratum () >= process_stratum)
- error (_("target already pushed"));
-
- /* Create a mock environment. An inferior with a thread, with a
- process_stratum target pushed. */
-
- target_ops_no_register mock_target;
- ptid_t mock_ptid (1, 1);
- inferior mock_inferior (mock_ptid.pid ());
- address_space mock_aspace {};
- mock_inferior.gdbarch = gdbarch;
- mock_inferior.aspace = &mock_aspace;
- thread_info mock_thread (&mock_inferior, mock_ptid);
- mock_inferior.thread_list = &mock_thread;
-
- /* Add the mock inferior to the inferior list so that look ups by
- target+ptid can find it. */
- scoped_restore restore_inferior_list
- = make_scoped_restore (&inferior_list);
- inferior_list = &mock_inferior;
-
- /* Switch to the mock inferior. */
- scoped_restore_current_inferior restore_current_inferior;
- set_current_inferior (&mock_inferior);
-
- /* Push the process_stratum target so we can mock accessing
- registers. */
- push_target (&mock_target);
-
- /* Pop it again on exit (return/exception). */
- struct on_exit
- {
- ~on_exit ()
- {
- pop_all_targets_at_and_above (process_stratum);
- }
- } pop_targets;
-
- /* Switch to the mock thread. */
- scoped_restore restore_inferior_ptid
- = make_scoped_restore (&inferior_ptid, mock_ptid);
+ scoped_mock_context<target_ops_no_register> mockctx (gdbarch);
/* Test that read one raw register from regcache_no_target will go
to the target layer. */
break;
}
- readwrite_regcache readwrite (&mock_target, gdbarch);
+ readwrite_regcache readwrite (&mockctx.mock_target, gdbarch);
gdb::def_vector<gdb_byte> buf (register_size (gdbarch, nonzero_regnum));
readwrite.raw_read (nonzero_regnum, buf.data ());
/* raw_read calls target_fetch_registers. */
- SELF_CHECK (mock_target.fetch_registers_called > 0);
- mock_target.reset ();
+ SELF_CHECK (mockctx.mock_target.fetch_registers_called > 0);
+ mockctx.mock_target.reset ();
/* Mark all raw registers valid, so the following raw registers
accesses won't go to target. */
for (auto i = 0; i < gdbarch_num_regs (gdbarch); i++)
readwrite.raw_update (i);
- mock_target.reset ();
+ mockctx.mock_target.reset ();
/* Then, read all raw and pseudo registers, and don't expect calling
to_{fetch,store}_registers. */
for (int regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++)
SELF_CHECK (REG_VALID == readwrite.cooked_read (regnum,
inner_buf.data ()));
- SELF_CHECK (mock_target.fetch_registers_called == 0);
- SELF_CHECK (mock_target.store_registers_called == 0);
- SELF_CHECK (mock_target.xfer_partial_called == 0);
+ SELF_CHECK (mockctx.mock_target.fetch_registers_called == 0);
+ SELF_CHECK (mockctx.mock_target.store_registers_called == 0);
+ SELF_CHECK (mockctx.mock_target.xfer_partial_called == 0);
- mock_target.reset ();
+ mockctx.mock_target.reset ();
}
readonly_detached_regcache readonly (readwrite);
/* GDB may go to target layer to fetch all registers and memory for
readonly regcache. */
- mock_target.reset ();
+ mockctx.mock_target.reset ();
for (int regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++)
{
}
}
- SELF_CHECK (mock_target.fetch_registers_called == 0);
- SELF_CHECK (mock_target.store_registers_called == 0);
- SELF_CHECK (mock_target.xfer_partial_called == 0);
+ SELF_CHECK (mockctx.mock_target.fetch_registers_called == 0);
+ SELF_CHECK (mockctx.mock_target.store_registers_called == 0);
+ SELF_CHECK (mockctx.mock_target.xfer_partial_called == 0);
- mock_target.reset ();
+ mockctx.mock_target.reset ();
}
}
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;
= gdbarch_data_register_post_init (init_regcache_descr);
gdb::observers::target_changed.attach (regcache_observer_target_changed);
- gdb::observers::thread_ptid_changed.attach
- (regcache::regcache_thread_ptid_changed);
+ gdb::observers::thread_ptid_changed.attach (regcache_thread_ptid_changed);
add_com ("flushregs", class_maintenance, reg_flush_command,
_("Force gdb to flush its register cache (maintainer command)."));
projects / deliverable / binutils-gdb.git / blobdiff