[Minios-devel] [UNIKRAFT/PLAT_RASPI PATCH 04/13] plats/raspi: Adding memzero assembly file

[Santiago Pagani <santiago.pagani@xxxxxxxxx>]

Adding the memzero assembly file used during page table creation.

Signed-off-by: Santiago Pagani <santiagopagani@xxxxxxxxx>
---
 mm.S | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 mm.S

diff --git a/mm.S b/mm.S
new file mode 100644
index 0000000..d8d5b62
--- /dev/null
+++ b/mm.S
@@ -0,0 +1,33 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2018, Sergey Matyukevich 
<https://github.com/s-matyukevich/raspberry-pi-os>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+.globl memzero
+memzero:
+       str xzr, [x0], #8
+       subs x1, x1, #8
+       b.gt memzero
+       ret
-- 
2.17.1


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