Except helper_load_pcc(), all helpers from sys_helper.c
are system-emulation specific. In preparation of restricting
sys_helper.c to system emulation, extract helper_load_pcc()
to clk_helper.c.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/alpha/clk_helper.c | 32 ++++++++++++++++++++++++++++++++
 target/alpha/sys_helper.c | 15 ---------------
 target/alpha/meson.build  |  1 +
 3 files changed, 33 insertions(+), 15 deletions(-)
 create mode 100644 target/alpha/clk_helper.c

diff --git a/target/alpha/clk_helper.c b/target/alpha/clk_helper.c
new file mode 100644
index 0000000000..26ffc231cd
--- /dev/null
+++ b/target/alpha/clk_helper.c
@@ -0,0 +1,32 @@
+/*
+ *  QEMU Alpha clock helpers.
+ *
+ *  Copyright (c) 2007 Jocelyn Mayer
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/timer.h"
+#include "exec/helper-proto.h"
+#include "cpu.h"
+
+uint64_t helper_load_pcc(CPUAlphaState *env)
+{
+#ifndef CONFIG_USER_ONLY
+    /*
+     * In system mode we have access to a decent high-resolution clock.
+     * In order to make OS-level time accounting work with the RPCC,
+     * present it with a well-timed clock fixed at 250MHz.
+     */
+    return (((uint64_t)env->pcc_ofs << 32)
+            | (uint32_t)(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) >> 2));
+#else
+    /*
+     * In user-mode, QEMU_CLOCK_VIRTUAL doesn't exist.  Just pass through
+     * the host cpu clock ticks.  Also, don't bother taking PCC_OFS into
+     * account.
+     */
+    return (uint32_t)cpu_get_host_ticks();
+#endif
+}
diff --git a/target/alpha/sys_helper.c b/target/alpha/sys_helper.c
index c83c92dd4c..98d9a0fff7 100644
--- a/target/alpha/sys_helper.c
+++ b/target/alpha/sys_helper.c
@@ -27,21 +27,6 @@
 #include "qemu/timer.h"
 
 
-uint64_t helper_load_pcc(CPUAlphaState *env)
-{
-#ifndef CONFIG_USER_ONLY
-    /* In system mode we have access to a decent high-resolution clock.
-       In order to make OS-level time accounting work with the RPCC,
-       present it with a well-timed clock fixed at 250MHz.  */
-    return (((uint64_t)env->pcc_ofs << 32)
-            | (uint32_t)(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) >> 2));
-#else
-    /* In user-mode, QEMU_CLOCK_VIRTUAL doesn't exist.  Just pass through the host cpu
-       clock ticks.  Also, don't bother taking PCC_OFS into account.  */
-    return (uint32_t)cpu_get_host_ticks();
-#endif
-}
-
 /* PALcode support special instructions */
 #ifndef CONFIG_USER_ONLY
 void helper_tbia(CPUAlphaState *env)
diff --git a/target/alpha/meson.build b/target/alpha/meson.build
index d3502dd823..ea252c99a5 100644
--- a/target/alpha/meson.build
+++ b/target/alpha/meson.build
@@ -4,6 +4,7 @@ alpha_ss.add(files(
   'fpu_helper.c',
   'gdbstub.c',
   'helper.c',
+  'clk_helper.c',
   'int_helper.c',
   'mem_helper.c',
   'sys_helper.c',
-- 
2.41.0