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[asan][sanitizer_common][AIX] Set allocator size and beginning #144784

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[asan][sanitizer_common][AIX] Set allocator size and beginning #144784

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4 changes: 4 additions & 0 deletions compiler-rt/lib/asan/asan_allocator.h
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Expand Up @@ -197,7 +197,11 @@ const uptr kAllocatorSpace = ~(uptr)0;
# endif // SANITIZER_APPLE

# if defined(__powerpc64__)
# if SANITIZER_AIX
const uptr kAllocatorSize = 1ULL << 38; // 256G.
# else
const uptr kAllocatorSize = 0x20000000000ULL; // 2T.
# endif
typedef DefaultSizeClassMap SizeClassMap;
# elif defined(__aarch64__) && SANITIZER_ANDROID
// Android needs to support 39, 42 and 48 bit VMA.
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5 changes: 5 additions & 0 deletions compiler-rt/lib/sanitizer_common/sanitizer_allocator_internal.h
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Expand Up @@ -23,7 +23,12 @@ namespace __sanitizer {
typedef CompactSizeClassMap InternalSizeClassMap;

struct AP32 {
// For AIX 64-bit, the mmap begin is at address 0x0a00000000000000ULL.
#if SANITIZER_AIX && SANITIZER_WORDSIZE == 64
static const uptr kSpaceBeg = 0x0a00000000000000ULL;
#else
static const uptr kSpaceBeg = 0;
#endif
static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE;
static const uptr kMetadataSize = 0;
typedef InternalSizeClassMap SizeClassMap;
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1 change: 1 addition & 0 deletions compiler-rt/lib/sanitizer_common/sanitizer_allocator_primary32.h
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Expand Up @@ -288,6 +288,7 @@ class SizeClassAllocator32 {
uptr ComputeRegionId(uptr mem) const {
if (SANITIZER_SIGN_EXTENDED_ADDRESSES)
mem &= (kSpaceSize - 1);
mem -= kSpaceBeg;
const uptr res = mem >> kRegionSizeLog;
CHECK_LT(res, kNumPossibleRegions);
return res;
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