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author | Shih-wei Liao <sliao@google.com> | 2012-02-06 00:43:06 -0800 |
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committer | Shih-wei Liao <sliao@google.com> | 2012-02-06 00:43:38 -0800 |
commit | 12945f8c461564f1a3b0120fb75b763a78b5ef82 (patch) | |
tree | a3719f9a24220df5ccbab52934cf16ba673f890f | |
parent | 77401247ea8c15ae4ac022936731b83b2def1e9e (diff) | |
download | gdk-12945f8c461564f1a3b0120fb75b763a78b5ef82.tar.gz |
Finish mmap implementation
Change-Id: Ie1705cfe76565ad206f6fbac410e99f90f61b5d7
Author: Chris Dearman <chris@mips.com>
-rw-r--r-- | libportable/arch-mips/mmap.c | 99 | ||||
-rw-r--r-- | libportable/arch-mips/open.c | 2 |
2 files changed, 86 insertions, 15 deletions
diff --git a/libportable/arch-mips/mmap.c b/libportable/arch-mips/mmap.c index e772a7c..0a304f0 100644 --- a/libportable/arch-mips/mmap.c +++ b/libportable/arch-mips/mmap.c @@ -3,17 +3,58 @@ #include <errno.h> #include <sys/mman.h> -/* May integate into one header file */ +/* Derived from development/ndk/platforms/android-3/include/asm-generic/mman.h */ +#define PROT_READ_PORTABLE 0x1 +#define PROT_WRITE_PORTABLE 0x2 +#define PROT_EXEC_PORTABLE 0x4 +#define PROT_SEM_PORTABLE 0x8 +#define PROT_NONE_PORTABLE 0x0 +#define PROT_GROWSDOWN_PORTABLE 0x01000000 +#define PROT_GROWSUP_PORTABLE 0x02000000 + +#define MAP_SHARED_PORTABLE 0x01 +#define MAP_PRIVATE_PORTABLE 0x02 +#define MAP_TYPE_PORTABLE 0x0f +#define MAP_FIXED_PORTABLE 0x10 #define MAP_ANONYMOUS_PORTABLE 0x20 -#define PROT_SEM_PORTABLE 0x8 -extern void* __mmap2(void*, size_t, int, int, int, size_t); +#define MS_ASYNC_PORTABLE 1 +#define MS_INVALIDATE_PORTABLE 2 +#define MS_SYNC_PORTABLE 4 + +#define MADV_NORMAL_PORTABLE 0 +#define MADV_RANDOM_PORTABLE 1 +#define MADV_SEQUENTIAL_PORTABLE 2 +#define MADV_WILLNEED_PORTABLE 3 +#define MADV_DONTNEED_PORTABLE 4 + +#define MADV_REMOVE_PORTABLE 9 +#define MADV_DONTFORK_PORTABLE 10 +#define MADV_DOFORK_PORTABLE 11 + +#define MAP_ANON_PORTABLE MAP_ANONYMOUS_PORTABLE +#define MAP_FILE_PORTABLE 0 + +/* Derived from development/ndk/platforms/android-3/include/asm-generic/mman.h */ +#define MAP_GROWSDOWN_PORTABLE 0x0100 +#define MAP_DENYWRITE_PORTABLE 0x0800 +#define MAP_EXECUTABLE_PORTABLE 0x1000 +#define MAP_LOCKED_PORTABLE 0x2000 +#define MAP_NORESERVE_PORTABLE 0x4000 +#define MAP_POPULATE_PORTABLE 0x8000 +#define MAP_NONBLOCK_PORTABLE 0x10000 + +#define MCL_CURRENT_PORTABLE 1 +#define MCL_FUTURE_PORTABLE 2 + #if MAP_ANONYMOUS_PORTABLE==MAP_ANONYMOUS #error Bad build environment #endif -static inline int mips_change_prot(int prot) { +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; @@ -22,23 +63,53 @@ static inline int mips_change_prot(int prot) { return prot; } -static inline int mips_change_flags(int flags) { - if (flags & MAP_ANONYMOUS_PORTABLE) { - flags &= ~MAP_ANONYMOUS_PORTABLE; - flags |= MAP_ANONYMOUS; - } +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 flags; + return mipsflags; } #define MMAP2_SHIFT 12 -void* mmap(void* addr, size_t size, int prot, int flags, int fd, long offset) { +extern void *__mmap2(void *, size_t, int, int, int, size_t); +void *mmap(void *addr, size_t size, int prot, int flags, int fd, long offset) +{ if ( offset & ((1UL << MMAP2_SHIFT)-1) ) { errno = EINVAL; return MAP_FAILED; } - prot = mips_change_prot(prot); - flags = mips_change_flags(flags); - return __mmap2(addr, size, prot, flags, fd, (size_t)offset >> MMAP2_SHIFT); + return __mmap2(addr, size, mips_change_prot(prot), mips_change_flags(flags), + fd, (size_t)offset >> MMAP2_SHIFT); } diff --git a/libportable/arch-mips/open.c b/libportable/arch-mips/open.c index aa3ac79..35a4bfa 100644 --- a/libportable/arch-mips/open.c +++ b/libportable/arch-mips/open.c @@ -102,7 +102,7 @@ static inline int mips_change_flags(int flags) } extern int __open(const char*, int, int); -int open_portable(const char *pathname, int flags, ...) +int open(const char *pathname, int flags, ...) { mode_t mode = 0; flags |= O_LARGEFILE; |