diff options
Diffstat (limited to 'unix')
| -rw-r--r-- | unix/Makefile | 1 | ||||
| -rw-r--r-- | unix/alloc.c | 46 | ||||
| -rw-r--r-- | unix/mpconfigport.h | 5 |
3 files changed, 52 insertions, 0 deletions
diff --git a/unix/Makefile b/unix/Makefile index ed79121c6f..04a2dbda17 100644 --- a/unix/Makefile +++ b/unix/Makefile @@ -75,6 +75,7 @@ SRC_C = \ file.c \ modsocket.c \ modos.c \ + alloc.c \ $(SRC_MOD) ifeq ($(UNAME_S),Darwin) 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); +} diff --git a/unix/mpconfigport.h b/unix/mpconfigport.h index 900bca7a6d..7056f3a030 100644 --- a/unix/mpconfigport.h +++ b/unix/mpconfigport.h @@ -114,6 +114,11 @@ typedef unsigned int mp_uint_t; // must be pointer size typedef void *machine_ptr_t; // must be of pointer size typedef const void *machine_const_ptr_t; // must be of pointer size +void mp_unix_alloc_exec(mp_uint_t min_size, void** ptr, mp_uint_t *size); +void mp_unix_free_exec(void *ptr, mp_uint_t size); +#define MP_PLAT_ALLOC_EXEC(min_size, ptr, size) mp_unix_alloc_exec(min_size, ptr, size) +#define MP_PLAT_FREE_EXEC(ptr, size) mp_unix_free_exec(ptr, size) + extern const struct _mp_obj_fun_builtin_t mp_builtin_input_obj; extern const struct _mp_obj_fun_builtin_t mp_builtin_open_obj; #define MICROPY_PORT_BUILTINS \ |