diff --git a/linux-user/xtensa/syscall.h b/linux-user/xtensa/syscall.h
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/target/xtensa/core-dc232b.c b/target/xtensa/core-dc232b.c
index fe80582df4..7331eeea2f 100644
--- a/target/xtensa/core-dc232b.c
+++ b/target/xtensa/core-dc232b.c
@@ -35,7 +35,7 @@
 #include "overlay_tool.h"
 
 #define xtensa_modules xtensa_modules_dc232b
-#include "core-dc232b/xtensa-modules.c"
+#include "core-dc232b/xtensa-modules.inc.c"
 
 static XtensaConfig dc232b __attribute__((unused)) = {
     .name = "dc232b",
@@ -43,11 +43,11 @@ static XtensaConfig dc232b __attribute__((unused)) = {
         .num_regs = 120,
         .num_core_regs = 52,
         .reg = {
-#include "core-dc232b/gdb-config.c"
+#include "core-dc232b/gdb-config.inc.c"
         }
     },
     .isa_internal = &xtensa_modules,
-    .clock_freq_khz = 10000,
+    .clock_freq_khz = (NANOSECONDS_PER_SECOND / 64) / 1000,
     DEFAULT_SECTIONS
 };
 
diff --git a/target/xtensa/core-dc232b/gdb-config.c b/target/xtensa/core-dc232b/gdb-config.inc.c
similarity index 100%
rename from target/xtensa/core-dc232b/gdb-config.c
rename to target/xtensa/core-dc232b/gdb-config.inc.c
diff --git a/target/xtensa/core-dc232b/xtensa-modules.c b/target/xtensa/core-dc232b/xtensa-modules.inc.c
similarity index 100%
rename from target/xtensa/core-dc232b/xtensa-modules.c
rename to target/xtensa/core-dc232b/xtensa-modules.inc.c
diff --git a/target/xtensa/core-dc233c.c b/target/xtensa/core-dc233c.c
index 00301c28a2..8296e6fa10 100644
--- a/target/xtensa/core-dc233c.c
+++ b/target/xtensa/core-dc233c.c
@@ -36,7 +36,7 @@
 #include "overlay_tool.h"
 
 #define xtensa_modules xtensa_modules_dc233c
-#include "core-dc233c/xtensa-modules.c"
+#include "core-dc233c/xtensa-modules.inc.c"
 
 static XtensaConfig dc233c __attribute__((unused)) = {
     .name = "dc233c",
@@ -44,7 +44,7 @@ static XtensaConfig dc233c __attribute__((unused)) = {
         .num_regs = 121,
         .num_core_regs = 52,
         .reg = {
-#include "core-dc233c/gdb-config.c"
+#include "core-dc233c/gdb-config.inc.c"
         }
     },
     .isa_internal = &xtensa_modules,
diff --git a/target/xtensa/core-dc233c/gdb-config.c b/target/xtensa/core-dc233c/gdb-config.inc.c
similarity index 100%
rename from target/xtensa/core-dc233c/gdb-config.c
rename to target/xtensa/core-dc233c/gdb-config.inc.c
diff --git a/target/xtensa/core-dc233c/xtensa-modules.c b/target/xtensa/core-dc233c/xtensa-modules.inc.c
similarity index 100%
rename from target/xtensa/core-dc233c/xtensa-modules.c
rename to target/xtensa/core-dc233c/xtensa-modules.inc.c
diff --git a/target/xtensa/core-de212.c b/target/xtensa/core-de212.c
index 466a467f7f..53775a97fa 100644
--- a/target/xtensa/core-de212.c
+++ b/target/xtensa/core-de212.c
@@ -36,13 +36,13 @@
 #include "overlay_tool.h"
 
 #define xtensa_modules xtensa_modules_de212
-#include "core-de212/xtensa-modules.c"
+#include "core-de212/xtensa-modules.inc.c"
 
 static XtensaConfig de212 __attribute__((unused)) = {
     .name = "de212",
     .gdb_regmap = {
         .reg = {
-#include "core-de212/gdb-config.c"
+#include "core-de212/gdb-config.inc.c"
         }
     },
     .isa_internal = &xtensa_modules,
diff --git a/target/xtensa/core-de212/gdb-config.c b/target/xtensa/core-de212/gdb-config.inc.c
similarity index 100%
rename from target/xtensa/core-de212/gdb-config.c
rename to target/xtensa/core-de212/gdb-config.inc.c
diff --git a/target/xtensa/core-de212/xtensa-modules.c b/target/xtensa/core-de212/xtensa-modules.inc.c
similarity index 100%
rename from target/xtensa/core-de212/xtensa-modules.c
rename to target/xtensa/core-de212/xtensa-modules.inc.c
diff --git a/target/xtensa/core-fsf.c b/target/xtensa/core-fsf.c
index f41de9a1aa..01932bdc8b 100644
--- a/target/xtensa/core-fsf.c
+++ b/target/xtensa/core-fsf.c
@@ -36,7 +36,7 @@
 #include "overlay_tool.h"
 
 #define xtensa_modules xtensa_modules_fsf
-#include "core-fsf/xtensa-modules.c"
+#include "core-fsf/xtensa-modules.inc.c"
 
 static XtensaConfig fsf __attribute__((unused)) = {
     .name = "fsf",
diff --git a/target/xtensa/core-fsf/xtensa-modules.c b/target/xtensa/core-fsf/xtensa-modules.inc.c
similarity index 100%
rename from target/xtensa/core-fsf/xtensa-modules.c
rename to target/xtensa/core-fsf/xtensa-modules.inc.c
diff --git a/target/xtensa/core-sample_controller.c b/target/xtensa/core-sample_controller.c
index 879e853a92..c622335ca5 100644
--- a/target/xtensa/core-sample_controller.c
+++ b/target/xtensa/core-sample_controller.c
@@ -36,13 +36,13 @@
 #include "overlay_tool.h"
 
 #define xtensa_modules xtensa_modules_sample_controller
-#include "core-sample_controller/xtensa-modules.c"
+#include "core-sample_controller/xtensa-modules.inc.c"
 
 static XtensaConfig sample_controller __attribute__((unused)) = {
     .name = "sample_controller",
     .gdb_regmap = {
         .reg = {
-#include "core-sample_controller/gdb-config.c"
+#include "core-sample_controller/gdb-config.inc.c"
         }
     },
     .isa_internal = &xtensa_modules,
diff --git a/target/xtensa/core-sample_controller/gdb-config.c b/target/xtensa/core-sample_controller/gdb-config.inc.c
similarity index 100%
rename from target/xtensa/core-sample_controller/gdb-config.c
rename to target/xtensa/core-sample_controller/gdb-config.inc.c
diff --git a/target/xtensa/core-sample_controller/xtensa-modules.c b/target/xtensa/core-sample_controller/xtensa-modules.inc.c
similarity index 100%
rename from target/xtensa/core-sample_controller/xtensa-modules.c
rename to target/xtensa/core-sample_controller/xtensa-modules.inc.c
diff --git a/target/xtensa/import_core.sh b/target/xtensa/import_core.sh
index 32255eea9b..af6c610479 100755
--- a/target/xtensa/import_core.sh
+++ b/target/xtensa/import_core.sh
@@ -22,7 +22,7 @@ mkdir -p "$TARGET"
 tar -xf "$OVERLAY" -C "$TARGET" --strip-components=1 \
     --xform='s/core/core-isa/' config/core.h
 tar -xf "$OVERLAY" -O gdb/xtensa-config.c | \
-    sed -n '1,/*\//p;/XTREG/,/XTREG_END/p' > "$TARGET"/gdb-config.c
+    sed -n '1,/*\//p;/XTREG/,/XTREG_END/p' > "$TARGET"/gdb-config.inc.c
 #
 # Fix up known issues in the xtensa-modules.c
 #
@@ -33,7 +33,8 @@ tar -xf "$OVERLAY" -O binutils/xtensa-modules.c | \
         -e '/^uint32 \*bypass_entry(int i)/,/}/d' \
         -e '/^#include "ansidecl.h"/d' \
         -e '/^Slot_[a-zA-Z0-9_]\+_decode (const xtensa_insnbuf insn)/,/^}/s/^  return 0;$/  return XTENSA_UNDEFINED;/' \
-    > "$TARGET"/xtensa-modules.c
+        -e 's/#include <xtensa-isa.h>/#include "xtensa-isa.h"/' \
+    > "$TARGET"/xtensa-modules.inc.c
 
 cat <<EOF > "${TARGET}.c"
 #include "qemu/osdep.h"
@@ -47,13 +48,13 @@ cat <<EOF > "${TARGET}.c"
 #include "overlay_tool.h"
 
 #define xtensa_modules xtensa_modules_$NAME
-#include "core-$NAME/xtensa-modules.c"
+#include "core-$NAME/xtensa-modules.inc.c"
 
 static XtensaConfig $NAME __attribute__((unused)) = {
     .name = "$NAME",
     .gdb_regmap = {
         .reg = {
-#include "core-$NAME/gdb-config.c"
+#include "core-$NAME/gdb-config.inc.c"
         }
     },
     .isa_internal = &xtensa_modules,
diff --git a/tests/tcg/xtensa/Makefile b/tests/tcg/xtensa/Makefile
index 2882c431e4..091518c055 100644
--- a/tests/tcg/xtensa/Makefile
+++ b/tests/tcg/xtensa/Makefile
@@ -5,7 +5,7 @@ CROSS=xtensa-$(CORE)-elf-
 
 ifndef XT
 SIM = ../../../xtensa-softmmu/qemu-system-xtensa
-SIMFLAGS = -M sim -cpu $(CORE) -nographic -semihosting -icount 7 $(EXTFLAGS) -kernel
+SIMFLAGS = -M sim -cpu $(CORE) -nographic -semihosting -icount 6 $(EXTFLAGS) -kernel
 SIMDEBUG = -s -S
 else
 SIM = xt-run