scons: Move the bytesToCppArray helper to gem5_scons.util.

Change-Id: Ib8789dd33ebbfb8e10446de5d1079654a2200d2d
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/48377
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>

site_scons/gem5_scons/util.py

@@ -38,6 +38,8 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+import array
+import functools
 import itertools
 import re
 import sys
@@ -109,3 +111,17 @@ def compareVersions(v1, v2):
         if n1 > n2: return  1
 
     return 0
+
+def bytesToCppArray(code, symbol, data):
+    '''
+    Output an array of bytes to a code formatter as a c++ array declaration.
+    '''
+    code('const std::uint8_t ${symbol}[] = {')
+    code.indent()
+    step = 16
+    for i in range(0, len(data), step):
+        x = array.array('B', data[i:i+step])
+        strs = map(lambda i: f'{i},', x)
+        code(functools.reduce(lambda x, y: x + y, strs))
+    code.dedent()
+    code('};')

src/SConscript

@@ -37,10 +37,8 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-import array
 import bisect
 import distutils.spawn
-import functools
 import importlib
 import importlib.abc
 import importlib.machinery
@@ -55,6 +53,7 @@ import SCons
 
 from gem5_scons import Transform, warning, error, ToValue, FromValue
 from gem5_scons.sources import *
+from gem5_scons.util import bytesToCppArray
 
 Export(SourceFilter.factories)
 
@@ -70,20 +69,6 @@ build_env = [(opt, env[opt]) for opt in export_vars]
 
 from m5.util import code_formatter
 
-def bytesToCppArray(code, symbol, data):
-    '''
-    Output an array of bytes to a code formatter as a c++ array declaration.
-    '''
-    code('const std::uint8_t ${symbol}[] = {')
-    code.indent()
-    step = 16
-    for i in range(0, len(data), step):
-        x = array.array('B', data[i:i + step])
-        strs = map(lambda i: f'{i},', x)
-        code(functools.reduce(lambda x, y: x + y, strs))
-    code.dedent()
-    code('};')
-
 def build_blob(target, source, env):
     '''
     Embed an arbitrary blob into the gem5 executable,