+ ~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);
+
+ /* Test that read one raw register from regcache_no_target will go
+ to the target layer. */
+
+ /* Find a raw register which size isn't zero. */
+ int nonzero_regnum;
+ for (nonzero_regnum = 0;
+ nonzero_regnum < gdbarch_num_regs (gdbarch);
+ nonzero_regnum++)
+ {
+ if (register_size (gdbarch, nonzero_regnum) != 0)
+ break;
+ }
+
+ readwrite_regcache readwrite (&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 ();
+
+ /* 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 ();
+ /* 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++)
+ {
+ if (register_size (gdbarch, regnum) == 0)
+ continue;
+
+ gdb::def_vector<gdb_byte> inner_buf (register_size (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);
+
+ 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 ();
+
+ for (int regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++)
+ {
+ if (register_size (gdbarch, regnum) == 0)
+ continue;
+
+ gdb::def_vector<gdb_byte> inner_buf (register_size (gdbarch, regnum));
+ enum register_status status = readonly.cooked_read (regnum,
+ inner_buf.data ());
+
+ if (regnum < gdbarch_num_regs (gdbarch))
+ {
+ auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch;
+
+ if (bfd_arch == bfd_arch_frv || bfd_arch == bfd_arch_h8300
+ || bfd_arch == bfd_arch_m32c || bfd_arch == bfd_arch_sh
+ || bfd_arch == bfd_arch_alpha || bfd_arch == bfd_arch_v850
+ || bfd_arch == bfd_arch_msp430 || bfd_arch == bfd_arch_mep
+ || bfd_arch == bfd_arch_mips || bfd_arch == bfd_arch_v850_rh850
+ || bfd_arch == bfd_arch_tic6x || bfd_arch == bfd_arch_mn10300
+ || bfd_arch == bfd_arch_rl78 || bfd_arch == bfd_arch_score
+ || bfd_arch == bfd_arch_riscv || bfd_arch == bfd_arch_csky)
+ {
+ /* Raw registers. If raw registers are not in save_reggroup,
+ their status are unknown. */
+ if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup))
+ SELF_CHECK (status == REG_VALID);
+ else
+ SELF_CHECK (status == REG_UNKNOWN);
+ }
+ else
+ SELF_CHECK (status == REG_VALID);
+ }
+ else
+ {
+ if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup))
+ SELF_CHECK (status == REG_VALID);
+ else
+ {
+ /* If pseudo registers are not in save_reggroup, some of
+ them can be computed from saved raw registers, but some
+ of them are unknown. */
+ auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch;
+
+ if (bfd_arch == bfd_arch_frv
+ || bfd_arch == bfd_arch_m32c
+ || bfd_arch == bfd_arch_mep
+ || bfd_arch == bfd_arch_sh)
+ SELF_CHECK (status == REG_VALID || status == REG_UNKNOWN);
+ else if (bfd_arch == bfd_arch_mips
+ || bfd_arch == bfd_arch_h8300)
+ SELF_CHECK (status == REG_UNKNOWN);
+ else
+ SELF_CHECK (status == REG_VALID);
+ }
+ }
+
+ SELF_CHECK (mock_target.fetch_registers_called == 0);
+ SELF_CHECK (mock_target.store_registers_called == 0);
+ SELF_CHECK (mock_target.xfer_partial_called == 0);
+
+ mock_target.reset ();
+ }
+}
+
+/* Test regcache::cooked_write by writing some expected contents to
+ registers, and checking that contents read from registers and the
+ expected contents are the same. */