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Initial implement mmap/munmap functions
copy & modified from mucl https://github.com/DaveeFTW/musl/blob/vita/src/internal/vita/mmap.c
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| /* | ||
| Copyright (C) 2017, David "Davee" Morgan | ||
| Copyright (C) 2019, Sunguk Lee | ||
| 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 <sys/mman.h> | ||
| #include <string.h> | ||
| #include <sys/errno.h> | ||
| #include <sys/types.h> | ||
| #include <psp2/kernel/sysmem.h> | ||
|
|
||
| void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) { | ||
| // can't use file | ||
| if (fd != -1) { | ||
| errno = ENOSYS; | ||
| return MAP_FAILED; | ||
| } | ||
| // can't use WX perm | ||
| if ((prot & (PROT_EXEC | PROT_WRITE)) == (PROT_EXEC | PROT_WRITE)) { | ||
| errno = EPERM; | ||
| return MAP_FAILED; | ||
| } | ||
|
|
||
| if ((prot & (PROT_WRITE | PROT_READ)) != (PROT_WRITE | PROT_READ)) { | ||
| errno = EPERM; | ||
| return MAP_FAILED; | ||
| } | ||
| if ((flags & MAP_PRIVATE) != MAP_PRIVATE) { | ||
| errno = ENOSYS; | ||
| return MAP_FAILED; | ||
| } | ||
|
|
||
| // can't use shared mem | ||
| if (flags & MAP_SHARED) { | ||
| errno = ENOSYS; | ||
| return MAP_FAILED; | ||
| } | ||
|
|
||
| SceUID blkid = sceKernelAllocMemBlock("mmap", SCE_KERNEL_MEMBLOCK_TYPE_USER_RW, length, 0); | ||
| if (blkid < 0) { | ||
| errno = ENOMEM; | ||
| return MAP_FAILED; | ||
| } | ||
|
|
||
| void *block_addr = NULL; | ||
| sceKernelGetMemBlockBase(blkid, &block_addr); | ||
|
|
||
| if (flags & (MAP_ANON | MAP_ANONYMOUS)) | ||
| memset(block_addr, 0, length); | ||
|
|
||
| return block_addr; | ||
| } | ||
|
|
||
| int munmap(void *addr, size_t length) { | ||
| SceUID block = sceKernelFindMemBlockByAddr(addr, length); | ||
|
|
||
| if (block < 0) { | ||
| errno = EINVAL; | ||
| return -1; | ||
| } | ||
|
|
||
| sceKernelFreeMemBlock(block); | ||
| return 0; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| /* | ||
| * Copyright (c) 2016, 2017, 2018, 2019 vitasdk | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions | ||
| * are met: | ||
| * 1. Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * 2. Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in the | ||
| * documentation and/or other materials provided with the distribution. | ||
| * 3. Neither the name of the copyright holder nor the names of its | ||
| * contributors may be used to endorse or promote products derived from | ||
| * this software without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| * "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED | ||
| * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
| #ifndef _SYS_MMAN_H_ | ||
| #define _SYS_MMAN_H_ | ||
|
|
||
| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
|
|
||
| #include <sys/types.h> | ||
|
|
||
| #define PROT_NONE 0 | ||
| #define PROT_READ 1 | ||
| #define PROT_WRITE 2 | ||
| #define PROT_EXEC 4 | ||
|
|
||
| #define MAP_FAILED ((void *) -1) | ||
| #define MAP_SHARED 0x01 | ||
| #define MAP_PRIVATE 0x02 | ||
| #define MAP_FIXED 0x10 | ||
| #define MAP_ANON 0x20 | ||
| #define MAP_ANONYMOUS MAP_ANON | ||
|
|
||
| #define MS_ASYNC 1 | ||
| #define MS_INVALIDATE 2 | ||
| #define MS_SYNC 4 | ||
|
|
||
| #define MCL_CURRENT 1 | ||
| #define MCL_FUTURE 2 | ||
|
|
||
| #define POSIX_MADV_NORMAL 0 | ||
| #define POSIX_MADV_RANDOM 1 | ||
| #define POSIX_MADV_SEQUENTIAL 2 | ||
| #define POSIX_MADV_WILLNEED 3 | ||
| #define POSIX_MADV_DONTNEED 4 | ||
|
|
||
| void *mmap (void *, size_t, int, int, int, off_t); | ||
| int munmap (void *, size_t); | ||
|
|
||
| #ifdef __cplusplus | ||
| } | ||
| #endif | ||
|
|
||
| #endif |