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[AddressSanitizer] Add PS4 offset 

llvm-svn: 295994
This commit is contained in:
Filipe Cabecinhas 2017-02-23 17:10:28 +00:00
parent 774ea7d0a9
commit 33dd486f1d
2 changed files with 21 additions and 3 deletions
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10
llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
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@ -80,6 +80,7 @@ static const uint64_t kMIPS64_ShadowOffset64 = 1ULL << 37;
static const uint64_t kAArch64_ShadowOffset64 = 1ULL << 36;
static const uint64_t kFreeBSD_ShadowOffset32 = 1ULL << 30;
static const uint64_t kFreeBSD_ShadowOffset64 = 1ULL << 46;
static const uint64_t kPS4CPU_ShadowOffset64 = 1ULL << 40;
static const uint64_t kWindowsShadowOffset32 = 3ULL << 28;
// The shadow memory space is dynamically allocated.
static const uint64_t kWindowsShadowOffset64 = kDynamicShadowSentinel;
@ -380,6 +381,7 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize,
bool IsAndroid = TargetTriple.isAndroid();
bool IsIOS = TargetTriple.isiOS() || TargetTriple.isWatchOS();
bool IsFreeBSD = TargetTriple.isOSFreeBSD();
bool IsPS4CPU = TargetTriple.isPS4CPU();
bool IsLinux = TargetTriple.isOSLinux();
bool IsPPC64 = TargetTriple.getArch() == llvm::Triple::ppc64 ||
TargetTriple.getArch() == llvm::Triple::ppc64le;
@ -418,6 +420,8 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize,
Mapping.Offset = kSystemZ_ShadowOffset64;
else if (IsFreeBSD)
Mapping.Offset = kFreeBSD_ShadowOffset64;
else if (IsPS4CPU)
Mapping.Offset = kPS4CPU_ShadowOffset64;
else if (IsLinux && IsX86_64) {
if (IsKasan)
Mapping.Offset = kLinuxKasan_ShadowOffset64;
@ -456,9 +460,9 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize,
// offset is not necessary 1/8-th of the address space. On SystemZ,
// we could OR the constant in a single instruction, but it's more
// efficient to load it once and use indexed addressing.
Mapping.OrShadowOffset = !IsAArch64 && !IsPPC64 && !IsSystemZ
&& !(Mapping.Offset & (Mapping.Offset - 1))
&& Mapping.Offset != kDynamicShadowSentinel;
Mapping.OrShadowOffset = !IsAArch64 && !IsPPC64 && !IsSystemZ && !IsPS4CPU &&
!(Mapping.Offset & (Mapping.Offset - 1)) &&
Mapping.Offset != kDynamicShadowSentinel;
return Mapping;
}

14
llvm/test/Instrumentation/AddressSanitizer/ps4.ll Normal file
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@ -0,0 +1,14 @@
; RUN: opt < %s -asan -asan-module -S -mtriple=x86_64-scei-ps4 | FileCheck %s
define i32 @read_4_bytes(i32* %a) sanitize_address {
entry:
%tmp1 = load i32, i32* %a, align 4
ret i32 %tmp1
}
; CHECK: @read_4_bytes
; CHECK-NOT: ret
; Check for ASAN's Offset on the PS4 (2^40 or 0x10000000000)
; CHECK: lshr {{.*}} 3
; CHECK-NEXT: {{1099511627776}}
; CHECK: ret