bf1b1e6c7f
libportable should be in development.git instead of ndk.git. Change-Id: Ic369ca6a0e4ffbd2741777c8d9ec578e8ce5abbd
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/*
|
|
* Copyright 2012, The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <sys/mman.h>
|
|
#include <mman_portable.h>
|
|
|
|
#if MAP_ANONYMOUS_PORTABLE==MAP_ANONYMOUS
|
|
#error Bad build environment
|
|
#endif
|
|
|
|
static inline int mips_change_prot(int prot)
|
|
{
|
|
/* Only PROT_SEM is different */
|
|
if (prot & PROT_SEM_PORTABLE) {
|
|
prot &= ~PROT_SEM_PORTABLE;
|
|
prot |= PROT_SEM;
|
|
}
|
|
|
|
return prot;
|
|
}
|
|
|
|
static inline int mips_change_flags(int flags)
|
|
{
|
|
int mipsflags = 0;
|
|
/* These are the documented flags for mmap */
|
|
if (flags & MAP_SHARED_PORTABLE)
|
|
mipsflags |= MAP_SHARED;
|
|
if (flags & MAP_PRIVATE_PORTABLE)
|
|
mipsflags |= MAP_PRIVATE;
|
|
#if defined(MAP_32BIT_PORTABLE) && defined(MAP_32BIT)
|
|
if (flags & MAP_32BIT_PORTABLE)
|
|
mipsflags |= MAP_32BIT;
|
|
#endif
|
|
if (flags & MAP_ANONYMOUS_PORTABLE)
|
|
mipsflags |= MAP_ANONYMOUS;
|
|
if (flags & MAP_FIXED_PORTABLE)
|
|
mipsflags |= MAP_FIXED;
|
|
if (flags & MAP_GROWSDOWN_PORTABLE)
|
|
mipsflags |= MAP_GROWSDOWN;
|
|
#if defined(MAP_HUGETLB_PORTABLE) && defined(MAP_HUGETLB)
|
|
if (flags & MAP_HUGETLB_PORTABLE)
|
|
mipsflags |= MAP_HUGETLB;
|
|
#endif
|
|
if (flags & MAP_LOCKED_PORTABLE)
|
|
mipsflags |= MAP_LOCKED;
|
|
if (flags & MAP_NONBLOCK_PORTABLE)
|
|
mipsflags |= MAP_NONBLOCK;
|
|
if (flags & MAP_NORESERVE_PORTABLE)
|
|
mipsflags |= MAP_NORESERVE;
|
|
if (flags & MAP_POPULATE_PORTABLE)
|
|
mipsflags |= MAP_POPULATE;
|
|
#if defined(MAP_STACK_PORTABLE) && defined(MAP_STACK)
|
|
if (flags & MAP_STACK_PORTABLE)
|
|
mipsflags |= MAP_STACK;
|
|
#endif
|
|
|
|
return mipsflags;
|
|
}
|
|
|
|
#define MMAP2_SHIFT 12
|
|
extern void *__mmap2(void *, size_t, int, int, int, size_t);
|
|
void *mmap_portable(void *addr, size_t size, int prot, int flags, int fd, long offset)
|
|
{
|
|
if ( offset & ((1UL << MMAP2_SHIFT)-1) ) {
|
|
errno = EINVAL;
|
|
return MAP_FAILED;
|
|
}
|
|
|
|
return __mmap2(addr, size, mips_change_prot(prot), mips_change_flags(flags),
|
|
fd, (size_t)offset >> MMAP2_SHIFT);
|
|
}
|