From b7235b8412a7511c94b31c0391eaf5c1b35ed3a8 Mon Sep 17 00:00:00 2001 From: Fabian Vogt Date: Wed, 3 Sep 2014 16:59:33 +0200 Subject: Add cache flush in py/asmarm.c and add new MP_PLAT_ALLOC_EXEC and MP_PLAT_FREE_EXEC macros Fixes issue #840 --- unix/alloc.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 unix/alloc.c (limited to 'unix/alloc.c') 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 +#include +#include + +#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); +} -- cgit v1.2.3