Merge pull request #845 from Vogtinator/master

Add allocation macros (per platform) and ARM cache flush

1 files changed, 46 insertions, 0 deletions

diff --git a/unix/alloc.c b/unix/alloc.c
new file mode 100644
index 0000000000..2c09f18461
--- /dev/null
+++ b/unix/alloc.c
@@ -0,0 +1,46 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Fabian Vogt
+ *
+ * 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.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+
+#include "mpconfigport.h"
+
+void mp_unix_alloc_exec(mp_uint_t min_size, void** ptr, mp_uint_t *size)
+{
+    // size needs to be a multiple of the page size
+    *size = (min_size + 0xfff) & (~0xfff);
+    *ptr = mmap(NULL, *size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+    if (*ptr == MAP_FAILED) {
+        *ptr = NULL;
+    }
+}
+
+void mp_unix_free_exec(void *ptr, mp_uint_t size)
+{
+    munmap(ptr, size);
+}