Import xPack OpenOCD 0.12.0-7 and GNU Make 4.4.1 from x86_64-w64-mingw32.

Tools/xpack-openocd-0.12.0-7/openocd/scripts/mem_helper.tcl

@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Helper for common memory read/modify/write procedures
+
+# mrw: "memory read word", returns value of $reg
+proc mrw {reg} {
+	return [read_memory $reg 32 1]
+}
+
+add_usage_text mrw "address"
+add_help_text mrw "Returns value of word in memory."
+
+# mrh: "memory read halfword", returns value of $reg
+proc mrh {reg} {
+	return [read_memory $reg 16 1]
+}
+
+add_usage_text mrh "address"
+add_help_text mrh "Returns value of halfword in memory."
+
+# mrb: "memory read byte", returns value of $reg
+proc mrb {reg} {
+	return [read_memory $reg 8 1]
+}
+
+add_usage_text mrb "address"
+add_help_text mrb "Returns value of byte in memory."
+
+# mmw: "memory modify word", updates value of $reg
+#       $reg <== ((value & ~$clearbits) | $setbits)
+proc mmw {reg setbits clearbits} {
+	set old [mrw $reg]
+	set new [expr {($old & ~$clearbits) | $setbits}]
+	mww $reg $new
+}
+
+add_usage_text mmw "address setbits clearbits"
+add_help_text mmw "Modify word in memory. new_val = (old_val & ~clearbits) | setbits;"