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Issue #1471 - Fix building on sparc64 Linux

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Correct various pre-processor defines for sparc64 and in mozjemalloc use the JS arm64 allocator on Linux/sparc64.
This corrects build problems opn Linux sparc64 and is in line with bugzilla bug #1275204.
This commit is contained in:
JMadgwick 2020-03-05 21:03:44 +00:00 • committed by Roy Tam
commit 1640ee7bc6
8 changed files with 39 additions and 15 deletions
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6
js/src/gc/Memory.cpp
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@ -423,7 +423,7 @@ MapMemoryAt(void* desired, size_t length, int prot = PROT_READ | PROT_WRITE,
// possibly be correct on AMD64, but for Solaris/illumos it is.
{
#if defined(__ia64__) || (defined(__sparc64__) && defined(__NetBSD__)) || defined(__aarch64__) || (defined(__sun) && defined(__x86_64__))
#if defined(__ia64__) || defined(__aarch64__) || (defined(__sun) && defined(__x86_64__)) || (defined(__sparc__) && defined(__arch64__) && (defined(__NetBSD__) || defined(__linux__)))
MOZ_ASSERT((0xffff800000000000ULL & (uintptr_t(desired) + length - 1)) == 0);
#endif
void* region = mmap(desired, length, prot, flags, fd, offset);
@ -446,7 +446,7 @@ static inline void*
MapMemory(size_t length, int prot = PROT_READ | PROT_WRITE,
int flags = MAP_PRIVATE | MAP_ANON, int fd = -1, off_t offset = 0)
{
#if defined(__ia64__) || (defined(__sparc64__) && defined(__NetBSD__))
#if defined(__ia64__) || (defined(__sparc__) && defined(__arch64__) && defined(__NetBSD__))
/*
* 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
@ -473,7 +473,7 @@ MapMemory(size_t length, int prot = PROT_READ | PROT_WRITE,
return nullptr;
}
return region;
#elif defined(__aarch64__) || (defined(__sun) && defined(__x86_64__))
#elif defined(__aarch64__) || (defined(__sun) && defined(__x86_64__)) || (defined(__sparc__) && defined(__arch64__) && defined(__linux__))
/*
* There might be similar virtual address issue on arm64 which depends on
* hardware and kernel configurations. But the work around is slightly