From cc3eed896e039d3c7088454ed49e483b82fe9917 Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Wed, 22 May 2024 14:59:49 -0600
Subject: scripts/makehex: initial commit

---
 mk/makehex.mk      | 11 +++++++++++
 mk/tools.mk        |  1 +
 scripts/makehex.py | 22 ++++++++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 mk/makehex.mk
 create mode 100644 scripts/makehex.py

diff --git a/mk/makehex.mk b/mk/makehex.mk
new file mode 100644
index 0000000..9aa9ebb
--- /dev/null
+++ b/mk/makehex.mk
@@ -0,0 +1,11 @@
+makehex_src = $(call require_core_objs,$(1),makehex_src)
+makehex_obj = $(call require_core_objs,$(1),makehex_obj)
+
+define hooks/makehex
+  define obj_rules
+    $$(call makehex_obj,$(1)): $$(call makehex_src,$(1)) scripts/makehex.py $$(obj_deps)
+		$$(call run,MAKEHEX,$$@) $$(PYTHON3) scripts/makehex.py <$$< >$$@
+  endef
+
+  $$(eval $$(call add_obj_rules,$(1)))
+endef
diff --git a/mk/tools.mk b/mk/tools.mk
index d5ea853..5decb78 100644
--- a/mk/tools.mk
+++ b/mk/tools.mk
@@ -3,6 +3,7 @@ define find_tools_lazy
   $(call find_command_lazy,genhtml,GENHTML)
   $(call find_command_lazy,peakrdl,PEAKRDL)
   $(call find_command_lazy,pkg-config,PKG_CONFIG)
+  $(call find_command_lazy,python3,PYTHON3)
   $(call find_command_lazy,qsys-generate,QSYS_GENERATE)
   $(call find_command_lazy,quartus,QUARTUS)
   $(call find_command_lazy,verilator,VERILATOR)
diff --git a/scripts/makehex.py b/scripts/makehex.py
new file mode 100644
index 0000000..3304fb3
--- /dev/null
+++ b/scripts/makehex.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+#
+# This is free and unencumbered software released into the public domain.
+#
+# Anyone is free to copy, modify, publish, use, compile, sell, or
+# distribute this software, either in source code form or as a compiled
+# binary, for any purpose, commercial or non-commercial, and by any
+# means.
+
+import sys
+
+bindata = sys.stdin.buffer.read()
+assert len(bindata) % 4 == 0
+nwords = len(bindata) // 4
+
+for i in range(nwords):
+    if i < len(bindata) // 4:
+        w = bindata[4*i : 4*i+4]
+        print("%02x%02x%02x%02x" % (w[3], w[2], w[1], w[0]))
+    else:
+        print("0")
+
-- 
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