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[tsan] Adjust setjmp/longjmp handling on Darwin for macOS Mojave 

On macOS Mojave, the OS started using the XOR-by-a-secret-key scheme (same as glibc is alread doing) for storing the SP value in setjmp environment. We need to adjust for that to keep supporting setjmp/longjmp on latest Darwin. The patch is basically doing the same what we're already doing for glibc.

rdar://problem/43542596

Differential Revision: https://reviews.llvm.org/D51064

llvm-svn: 340350
This commit is contained in:
Kuba Mracek 2018-08-21 22:35:52 +00:00
parent 14a577bfd1
commit 986f03c2ea
6 changed files with 30 additions and 4 deletions
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4
compiler-rt/lib/sanitizer_common/sanitizer_mac.cc
View File

@ -511,6 +511,10 @@ MacosVersion GetMacosVersionInternal() {
case '2': return MACOS_VERSION_MOUNTAIN_LION;
case '3': return MACOS_VERSION_MAVERICKS;
case '4': return MACOS_VERSION_YOSEMITE;
case '5': return MACOS_VERSION_EL_CAPITAN;
case '6': return MACOS_VERSION_SIERRA;
case '7': return MACOS_VERSION_HIGH_SIERRA;
case '8': return MACOS_VERSION_MOJAVE;
default:
if (IsDigit(version[1]))
return MACOS_VERSION_UNKNOWN_NEWER;

4
compiler-rt/lib/sanitizer_common/sanitizer_mac.h
View File

@ -40,6 +40,10 @@ enum MacosVersion {
MACOS_VERSION_MOUNTAIN_LION,
MACOS_VERSION_MAVERICKS,
MACOS_VERSION_YOSEMITE,
MACOS_VERSION_EL_CAPITAN,
MACOS_VERSION_SIERRA,
MACOS_VERSION_HIGH_SIERRA,
MACOS_VERSION_MOJAVE,
MACOS_VERSION_UNKNOWN_NEWER
};

3
compiler-rt/lib/tsan/rtl/tsan_interceptors.cc
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@ -508,7 +508,8 @@ static void LongJmp(ThreadState *thr, uptr *env) {
uptr mangled_sp = env[6];
#elif SANITIZER_MAC
# ifdef __aarch64__
uptr mangled_sp = env[13];
uptr mangled_sp =
(GetMacosVersion() >= MACOS_VERSION_MOJAVE) ? env[12] : env[13];
# else
uptr mangled_sp = env[2];
# endif

8
compiler-rt/lib/tsan/rtl/tsan_platform_mac.cc
View File

@ -240,6 +240,9 @@ void InitializePlatformEarly() {
#endif
}
static const uptr kPthreadSetjmpXorKeySlot = 0x7;
extern "C" uptr __tsan_darwin_setjmp_xor_key = 0;
void InitializePlatform() {
DisableCoreDumperIfNecessary();
#if !SANITIZER_GO
@ -251,6 +254,11 @@ void InitializePlatform() {
prev_pthread_introspection_hook =
pthread_introspection_hook_install(&my_pthread_introspection_hook);
#endif
if (GetMacosVersion() >= MACOS_VERSION_MOJAVE) {
__tsan_darwin_setjmp_xor_key =
(uptr)pthread_getspecific(kPthreadSetjmpXorKeySlot);
}
}
#if !SANITIZER_GO

12
compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S
View File

@ -120,8 +120,10 @@ ASM_SYMBOL_INTERCEPTOR(setjmp):
add x0, x29, 32
eor x1, x2, x0
#else
adrp x2, ___tsan_darwin_setjmp_xor_key@page
ldr x2, [x2, ___tsan_darwin_setjmp_xor_key@pageoff]
add x0, x29, 32
mov x1, x0
eor x1, x2, x0
#endif
// call tsan interceptor
@ -178,8 +180,10 @@ ASM_SYMBOL_INTERCEPTOR(_setjmp):
add x0, x29, 32
eor x1, x2, x0
#else
adrp x2, ___tsan_darwin_setjmp_xor_key@page
ldr x2, [x2, ___tsan_darwin_setjmp_xor_key@pageoff]
add x0, x29, 32
mov x1, x0
eor x1, x2, x0
#endif
// call tsan interceptor
@ -238,8 +242,10 @@ ASM_SYMBOL_INTERCEPTOR(sigsetjmp):
add x0, x29, 32
eor x1, x2, x0
#else
adrp x2, ___tsan_darwin_setjmp_xor_key@page
ldr x2, [x2, ___tsan_darwin_setjmp_xor_key@pageoff]
add x0, x29, 32
mov x1, x0
eor x1, x2, x0
#endif
// call tsan interceptor

3
compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S
View File

@ -196,6 +196,7 @@ ASM_SYMBOL_INTERCEPTOR(setjmp):
#elif defined(__APPLE__)
lea 16(%rsp), %rdi
mov %rdi, %rsi
xorq ___tsan_darwin_setjmp_xor_key(%rip), %rsi
#elif defined(__linux__)
lea 16(%rsp), %rdi
mov %rdi, %rsi
@ -244,6 +245,7 @@ ASM_SYMBOL_INTERCEPTOR(_setjmp):
#elif defined(__APPLE__)
lea 16(%rsp), %rdi
mov %rdi, %rsi
xorq ___tsan_darwin_setjmp_xor_key(%rip), %rsi
#elif defined(__linux__)
lea 16(%rsp), %rdi
mov %rdi, %rsi
@ -299,6 +301,7 @@ ASM_SYMBOL_INTERCEPTOR(sigsetjmp):
#elif defined(__APPLE__)
lea 32(%rsp), %rdi
mov %rdi, %rsi
xorq ___tsan_darwin_setjmp_xor_key(%rip), %rsi
#elif defined(__linux__)
lea 32(%rsp), %rdi
mov %rdi, %rsi