Index: compiler-rt/trunk/lib/interception/interception.h =================================================================== --- compiler-rt/trunk/lib/interception/interception.h +++ compiler-rt/trunk/lib/interception/interception.h @@ -15,8 +15,8 @@ #ifndef INTERCEPTION_H #define INTERCEPTION_H -#if !defined(__linux__) && !defined(__FreeBSD__) && \ - !defined(__APPLE__) && !defined(_WIN32) +#if !defined(__linux__) && !defined(__FreeBSD__) && !defined(__APPLE__) && \ + !defined(_WIN32) && !defined(__Fuchsia__) # error "Interception doesn't work on this operating system." #endif @@ -139,7 +139,7 @@ # define DECLARE_WRAPPER(ret_type, func, ...) \ extern "C" ret_type func(__VA_ARGS__) \ __attribute__((alias("__interceptor_" #func), visibility("default"))); -#else +#elif !defined(__Fuchsia__) # define WRAP(x) __interceptor_ ## x # define WRAPPER_NAME(x) "__interceptor_" #x # define INTERCEPTOR_ATTRIBUTE __attribute__((visibility("default"))) @@ -148,7 +148,15 @@ __attribute__((weak, alias("__interceptor_" #func), visibility("default"))); #endif -#if !defined(__APPLE__) +#if defined(__Fuchsia__) +// There is no general interception at all on Fuchsia. +// Sanitizer runtimes just define functions directly to preempt them, +// and have bespoke ways to access the underlying libc functions. +# include +# define INTERCEPTOR_ATTRIBUTE __attribute__((visibility("default"))) +# define REAL(x) __unsanitized_##x +# define DECLARE_REAL(ret_type, func, ...) +#elif !defined(__APPLE__) # define PTR_TO_REAL(x) real_##x # define REAL(x) __interception::PTR_TO_REAL(x) # define FUNC_TYPE(x) x##_f @@ -166,15 +174,19 @@ # define ASSIGN_REAL(x, y) #endif // __APPLE__ +#if !defined(__Fuchsia__) #define DECLARE_REAL_AND_INTERCEPTOR(ret_type, func, ...) \ DECLARE_REAL(ret_type, func, __VA_ARGS__) \ extern "C" ret_type WRAP(func)(__VA_ARGS__); +#else +#define DECLARE_REAL_AND_INTERCEPTOR(ret_type, func, ...) +#endif // Generally, you don't need to use DEFINE_REAL by itself, as INTERCEPTOR // macros does its job. In exceptional cases you may need to call REAL(foo) // without defining INTERCEPTOR(..., foo, ...). For example, if you override // foo with an interceptor for other function. -#if !defined(__APPLE__) +#if !defined(__APPLE__) && !defined(__Fuchsia__) # define DEFINE_REAL(ret_type, func, ...) \ typedef ret_type (*FUNC_TYPE(func))(__VA_ARGS__); \ namespace __interception { \ @@ -184,7 +196,18 @@ # define DEFINE_REAL(ret_type, func, ...) #endif -#if !defined(__APPLE__) +#if defined(__Fuchsia__) + +// We need to define the __interceptor_func name just to get +// sanitizer_common/scripts/gen_dynamic_list.py to export func. +// But we don't need to export __interceptor_func to get that. +#define INTERCEPTOR(ret_type, func, ...) \ + extern "C"[[ gnu::alias(#func), gnu::visibility("hidden") ]] ret_type \ + __interceptor_##func(__VA_ARGS__); \ + extern "C" INTERCEPTOR_ATTRIBUTE ret_type func(__VA_ARGS__) + +#elif !defined(__APPLE__) + #define INTERCEPTOR(ret_type, func, ...) \ DEFINE_REAL(ret_type, func, __VA_ARGS__) \ DECLARE_WRAPPER(ret_type, func, __VA_ARGS__) \ @@ -251,7 +274,7 @@ # define INTERCEPT_FUNCTION(func) INTERCEPT_FUNCTION_MAC(func) # define INTERCEPT_FUNCTION_VER(func, symver) \ INTERCEPT_FUNCTION_VER_MAC(func, symver) -#else // defined(_WIN32) +#elif defined(_WIN32) # include "interception_win.h" # define INTERCEPT_FUNCTION(func) INTERCEPT_FUNCTION_WIN(func) # define INTERCEPT_FUNCTION_VER(func, symver) \ Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_platform_interceptors.h =================================================================== --- compiler-rt/trunk/lib/sanitizer_common/sanitizer_platform_interceptors.h +++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_platform_interceptors.h @@ -28,7 +28,7 @@ # define SI_WINDOWS 1 #endif -#if (SI_POSIX != 0) == (SI_WINDOWS != 0) +#if (SI_POSIX != 0) == (SI_WINDOWS != 0) && !SANITIZER_FUCHSIA # error "Windows is not POSIX!" #endif @@ -80,6 +80,12 @@ # define SI_IOS 0 #endif +#if SANITIZER_FUCHSIA +# define SI_NOT_FUCHSIA 0 +#else +# define SI_NOT_FUCHSIA 1 +#endif + #if SANITIZER_POSIX && !SANITIZER_MAC # define SI_POSIX_NOT_MAC 1 #else @@ -92,23 +98,23 @@ # define SI_LINUX_NOT_FREEBSD 0 #endif -#define SANITIZER_INTERCEPT_STRLEN 1 -#define SANITIZER_INTERCEPT_STRNLEN SI_NOT_MAC -#define SANITIZER_INTERCEPT_STRCMP 1 -#define SANITIZER_INTERCEPT_STRSTR 1 +#define SANITIZER_INTERCEPT_STRLEN SI_NOT_FUCHSIA +#define SANITIZER_INTERCEPT_STRNLEN (SI_NOT_MAC && SI_NOT_FUCHSIA) +#define SANITIZER_INTERCEPT_STRCMP SI_NOT_FUCHSIA +#define SANITIZER_INTERCEPT_STRSTR SI_NOT_FUCHSIA #define SANITIZER_INTERCEPT_STRCASESTR SI_POSIX -#define SANITIZER_INTERCEPT_STRTOK 1 -#define SANITIZER_INTERCEPT_STRCHR 1 -#define SANITIZER_INTERCEPT_STRCHRNUL SI_UNIX_NOT_MAC -#define SANITIZER_INTERCEPT_STRRCHR 1 -#define SANITIZER_INTERCEPT_STRSPN 1 -#define SANITIZER_INTERCEPT_STRPBRK 1 +#define SANITIZER_INTERCEPT_STRTOK SI_NOT_FUCHSIA +#define SANITIZER_INTERCEPT_STRCHR SI_NOT_FUCHSIA +#define SANITIZER_INTERCEPT_STRCHRNUL SI_POSIX_NOT_MAC +#define SANITIZER_INTERCEPT_STRRCHR SI_NOT_FUCHSIA +#define SANITIZER_INTERCEPT_STRSPN SI_NOT_FUCHSIA +#define SANITIZER_INTERCEPT_STRPBRK SI_NOT_FUCHSIA #define SANITIZER_INTERCEPT_TEXTDOMAIN SI_LINUX_NOT_ANDROID #define SANITIZER_INTERCEPT_STRCASECMP SI_POSIX #define SANITIZER_INTERCEPT_MEMSET 1 #define SANITIZER_INTERCEPT_MEMMOVE 1 #define SANITIZER_INTERCEPT_MEMCPY 1 -#define SANITIZER_INTERCEPT_MEMCMP 1 +#define SANITIZER_INTERCEPT_MEMCMP SI_NOT_FUCHSIA #define SANITIZER_INTERCEPT_STRNDUP SI_POSIX #define SANITIZER_INTERCEPT___STRNDUP SI_LINUX_NOT_FREEBSD #if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ @@ -120,7 +126,7 @@ // memmem on Darwin doesn't exist on 10.6 // FIXME: enable memmem on Windows. #define SANITIZER_INTERCEPT_MEMMEM (SI_POSIX && !SI_MAC_DEPLOYMENT_BELOW_10_7) -#define SANITIZER_INTERCEPT_MEMCHR 1 +#define SANITIZER_INTERCEPT_MEMCHR SI_NOT_FUCHSIA #define SANITIZER_INTERCEPT_MEMRCHR (SI_FREEBSD || SI_LINUX || SI_NETBSD) #define SANITIZER_INTERCEPT_READ SI_POSIX @@ -157,7 +163,7 @@ # define SANITIZER_INTERCEPT_ISOC99_PRINTF SI_LINUX_NOT_ANDROID #endif -#define SANITIZER_INTERCEPT_FREXP 1 +#define SANITIZER_INTERCEPT_FREXP SI_NOT_FUCHSIA #define SANITIZER_INTERCEPT_FREXPF_FREXPL SI_POSIX #define SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS SI_POSIX @@ -372,10 +378,12 @@ (SI_LINUX_NOT_ANDROID || SI_MAC || SI_FREEBSD || SI_NETBSD) #define SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO \ - (!SI_FREEBSD && !SI_MAC && !SI_NETBSD) + (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA) #define SANITIZER_INTERCEPT_MEMALIGN (!SI_FREEBSD && !SI_MAC && !SI_NETBSD) -#define SANITIZER_INTERCEPT_PVALLOC (!SI_FREEBSD && !SI_MAC && !SI_NETBSD) -#define SANITIZER_INTERCEPT_CFREE (!SI_FREEBSD && !SI_MAC && !SI_NETBSD) +#define SANITIZER_INTERCEPT_PVALLOC \ + (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA) +#define SANITIZER_INTERCEPT_CFREE \ + (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA) #define SANITIZER_INTERCEPT_ALIGNED_ALLOC (!SI_MAC) #define SANITIZER_INTERCEPT_MALLOC_USABLE_SIZE (!SI_MAC) #define SANITIZER_INTERCEPT_MCHECK_MPROBE SI_LINUX_NOT_ANDROID