diff options
Diffstat (limited to 'memory')
| -rw-r--r-- | memory/mozjemalloc/jemalloc.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/memory/mozjemalloc/jemalloc.c b/memory/mozjemalloc/jemalloc.c index 50ba22889..47a5a9f5c 100644 --- a/memory/mozjemalloc/jemalloc.c +++ b/memory/mozjemalloc/jemalloc.c @@ -1966,7 +1966,7 @@ static void * pages_map(void *addr, size_t size) { void *ret; -#if defined(__ia64__) +#if defined(__ia64__) || (defined(__sparc__) && defined(__arch64__) && defined(__linux__)) /* * The JS engine assumes that all allocated pointers have their high 17 bits clear, * which ia64's mmap doesn't support directly. However, we can emulate it by passing @@ -1987,6 +1987,28 @@ pages_map(void *addr, size_t size) } #endif +#if defined(__sparc__) && defined(__arch64__) && defined(__linux__) + const uintptr_t start = 0x0000070000000000ULL; + const uintptr_t end = 0x0000800000000000ULL; + + /* Copied from js/src/gc/Memory.cpp and adapted for this source */ + + uintptr_t hint; + void* region = MAP_FAILED; + for (hint = start; region == MAP_FAILED && hint + size <= end; hint += chunksize) { + region = mmap((void*)hint, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0); + if (region != MAP_FAILED) { + if (((size_t) region + (size - 1)) & 0xffff800000000000) { + if (munmap(region, size)) { + MOZ_ASSERT(errno == ENOMEM); + } + region = MAP_FAILED; + } + } + } + ret = region; +#else + /* * We don't use MAP_FIXED here, because it can cause the *replacement* * of existing mappings, and we only want to create new mappings. @@ -1995,10 +2017,11 @@ pages_map(void *addr, size_t size) MAP_PRIVATE | MAP_ANON, -1, 0); assert(ret != NULL); +#endif if (ret == MAP_FAILED) { ret = NULL; } -#if defined(__ia64__) +#if defined(__ia64__) || (defined(__sparc__) && defined(__arch64__) && defined(__linux__)) /* * If the allocated memory doesn't have its upper 17 bits clear, consider it * as out of memory. @@ -2031,7 +2054,7 @@ pages_map(void *addr, size_t size) MozTagAnonymousMemory(ret, size, "jemalloc"); } -#if defined(__ia64__) +#if defined(__ia64__) || (defined(__sparc__) && defined(__arch64__) && defined(__linux__)) assert(ret == NULL || (!check_placement && ret != NULL) || (check_placement && ret == addr)); #else |