All source files: Merge from upstream 285547.

libsanitizer/

	* All source files: Merge from upstream 285547.
	* configure.tgt (SANITIZER_COMMON_TARGET_DEPENDENT_OBJECTS): New
	variable.
	* configure.ac (SANITIZER_COMMON_TARGET_DEPENDENT_OBJECTS): Handle it.
	* asan/Makefile.am (asan_files): Add new files.
	* asan/Makefile.in: Regenerate.
	* ubsan/Makefile.in: Likewise.
	* lsan/Makefile.in: Likewise.
	* tsan/Makefile.am (tsan_files): Add new files.
	* tsan/Makefile.in: Regenerate.
	* sanitizer_common/Makefile.am (sanitizer_common_files): Add new files.
	(EXTRA_libsanitizer_common_la_SOURCES): Define.
	(libsanitizer_common_la_LIBADD): Likewise.
	(libsanitizer_common_la_DEPENDENCIES): Likewise.
	* sanitizer_common/Makefile.in: Regenerate.
	* interception/Makefile.in: Likewise.
	* libbacktace/Makefile.in: Likewise.
	* Makefile.in: Likewise.
	* configure: Likewise.
	* merge.sh: Handle builtins/assembly.h merging.
	* builtins/assembly.h: New file.
	* asan/libtool-version: Bump the libasan SONAME.

From-SVN: r241977

5 files changed, 140 insertions, 7 deletions

diff --git a/libsanitizer/include/sanitizer/allocator_interface.h b/libsanitizer/include/sanitizer/allocator_interface.h
index 97a72a2..d4801e9 100644
--- a/libsanitizer/include/sanitizer/allocator_interface.h
+++ b/libsanitizer/include/sanitizer/allocator_interface.h
@@ -57,6 +57,23 @@ extern "C" {
        deallocation of "ptr". */
   void __sanitizer_malloc_hook(const volatile void *ptr, size_t size);
   void __sanitizer_free_hook(const volatile void *ptr);
+
+  /* Installs a pair of hooks for malloc/free.
+     Several (currently, 5) hook pairs may be installed, they are executed
+     in the order they were installed and after calling
+     __sanitizer_malloc_hook/__sanitizer_free_hook.
+     Unlike __sanitizer_malloc_hook/__sanitizer_free_hook these hooks can be
+     chained and do not rely on weak symbols working on the platform, but
+     require __sanitizer_install_malloc_and_free_hooks to be called at startup
+     and thus will not be called on malloc/free very early in the process.
+     Returns the number of hooks currently installed or 0 on failure.
+     Not thread-safe, should be called in the main thread before starting
+     other threads.
+  */
+  int __sanitizer_install_malloc_and_free_hooks(
+      void (*malloc_hook)(const volatile void *, size_t),
+      void (*free_hook)(const volatile void *));
+
 #ifdef __cplusplus
 }  // extern "C"
 #endif
diff --git a/libsanitizer/include/sanitizer/common_interface_defs.h b/libsanitizer/include/sanitizer/common_interface_defs.h
index 35463e0..fd38c55 100644
--- a/libsanitizer/include/sanitizer/common_interface_defs.h
+++ b/libsanitizer/include/sanitizer/common_interface_defs.h
@@ -39,6 +39,9 @@ extern "C" {
 
   // Tell the tools to write their reports to "path.<pid>" instead of stderr.
   void __sanitizer_set_report_path(const char *path);
+  // Tell the tools to write their reports to the provided file descriptor
+  // (casted to void *).
+  void __sanitizer_set_report_fd(void *fd);
 
   // Notify the tools that the sandbox is going to be turned on. The reserved
   // parameter will be used in the future to hold a structure with functions
@@ -112,6 +115,16 @@ extern "C" {
   // Print the stack trace leading to this call. Useful for debugging user code.
   void __sanitizer_print_stack_trace();
 
+  // Symbolizes the supplied 'pc' using the format string 'fmt'.
+  // Outputs at most 'out_buf_size' bytes into 'out_buf'.
+  // The format syntax is described in
+  // lib/sanitizer_common/sanitizer_stacktrace_printer.h.
+  void __sanitizer_symbolize_pc(void *pc, const char *fmt, char *out_buf,
+                                size_t out_buf_size);
+  // Same as __sanitizer_symbolize_pc, but for data section (i.e. globals).
+  void __sanitizer_symbolize_global(void *data_ptr, const char *fmt,
+                                    char *out_buf, size_t out_buf_size);
+
   // Sets the callback to be called right before death on error.
   // Passing 0 will unset the callback.
   void __sanitizer_set_death_callback(void (*callback)(void));
@@ -123,9 +136,50 @@ extern "C" {
   // to know what is being passed to libc functions, e.g. memcmp.
   // FIXME: implement more hooks.
   void __sanitizer_weak_hook_memcmp(void *called_pc, const void *s1,
-                                    const void *s2, size_t n);
+                                    const void *s2, size_t n, int result);
   void __sanitizer_weak_hook_strncmp(void *called_pc, const char *s1,
-                                    const char *s2, size_t n);
+                                    const char *s2, size_t n, int result);
+  void __sanitizer_weak_hook_strncasecmp(void *called_pc, const char *s1,
+                                         const char *s2, size_t n, int result);
+  void __sanitizer_weak_hook_strcmp(void *called_pc, const char *s1,
+                                    const char *s2, int result);
+  void __sanitizer_weak_hook_strcasecmp(void *called_pc, const char *s1,
+                                        const char *s2, int result);
+  void __sanitizer_weak_hook_strstr(void *called_pc, const char *s1,
+                                    const char *s2, char *result);
+  void __sanitizer_weak_hook_strcasestr(void *called_pc, const char *s1,
+                                        const char *s2, char *result);
+  void __sanitizer_weak_hook_memmem(void *called_pc,
+                                    const void *s1, size_t len1,
+                                    const void *s2, size_t len2, void *result);
+
+  // Prints stack traces for all live heap allocations ordered by total
+  // allocation size until `top_percent` of total live heap is shown.
+  // `top_percent` should be between 1 and 100.
+  // Experimental feature currently available only with asan on Linux/x86_64.
+  void __sanitizer_print_memory_profile(size_t top_percent);
+
+  // Fiber annotation interface.
+  // Before switching to a different stack, one must call
+  // __sanitizer_start_switch_fiber with a pointer to the bottom of the
+  // destination stack and its size. When code starts running on the new stack,
+  // it must call __sanitizer_finish_switch_fiber to finalize the switch.
+  // The start_switch function takes a void** to store the current fake stack if
+  // there is one (it is needed when detect_stack_use_after_return is enabled).
+  // When restoring a stack, this pointer must be given to the finish_switch
+  // function. In most cases, this void* can be stored on the stack just before
+  // switching.  When leaving a fiber definitely, null must be passed as first
+  // argument to the start_switch function so that the fake stack is destroyed.
+  // If you do not want support for stack use-after-return detection, you can
+  // always pass null to these two functions.
+  // Note that the fake stack mechanism is disabled during fiber switch, so if a
+  // signal callback runs during the switch, it will not benefit from the stack
+  // use-after-return detection.
+  void __sanitizer_start_switch_fiber(void **fake_stack_save,
+                                      const void *bottom, size_t size);
+  void __sanitizer_finish_switch_fiber(void *fake_stack_save,
+                                       const void **bottom_old,
+                                       size_t *size_old);
 #ifdef __cplusplus
 }  // extern "C"
 #endif
diff --git a/libsanitizer/include/sanitizer/coverage_interface.h b/libsanitizer/include/sanitizer/coverage_interface.h
index 37c133a..ffb956c 100644
--- a/libsanitizer/include/sanitizer/coverage_interface.h
+++ b/libsanitizer/include/sanitizer/coverage_interface.h
@@ -56,6 +56,7 @@ extern "C" {
   // __sanitizer_get_number_of_counters bytes long and 8-aligned.
   uintptr_t
   __sanitizer_update_counter_bitset_and_clear_counters(uint8_t *bitset);
+
 #ifdef __cplusplus
 }  // extern "C"
 #endif
diff --git a/libsanitizer/include/sanitizer/esan_interface.h b/libsanitizer/include/sanitizer/esan_interface.h
new file mode 100644
index 0000000..cd18f34
--- /dev/null
+++ b/libsanitizer/include/sanitizer/esan_interface.h
@@ -0,0 +1,48 @@
+//===-- sanitizer/esan_interface.h ------------------------------*- C++ -*-===//
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of EfficiencySanitizer, a family of performance tuners.
+//
+// Public interface header.
+//===----------------------------------------------------------------------===//
+#ifndef SANITIZER_ESAN_INTERFACE_H
+#define SANITIZER_ESAN_INTERFACE_H
+
+#include <sanitizer/common_interface_defs.h>
+
+// We declare our interface routines as weak to allow the user to avoid
+// ifdefs and instead use this pattern to allow building the same sources
+// with and without our runtime library:
+//     if (__esan_report)
+//       __esan_report();
+#ifdef _MSC_VER
+/* selectany is as close to weak as we'll get. */
+#define COMPILER_RT_WEAK __declspec(selectany)
+#elif __GNUC__
+#define COMPILER_RT_WEAK __attribute__((weak))
+#else
+#define COMPILER_RT_WEAK
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// This function can be called mid-run (or at the end of a run for
+// a server process that doesn't shut down normally) to request that
+// data for that point in the run be reported from the tool.
+void COMPILER_RT_WEAK __esan_report();
+
+// This function returns the number of samples that the esan tool has collected
+// to this point.  This is useful for testing.
+unsigned int COMPILER_RT_WEAK __esan_get_sample_count();
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // SANITIZER_ESAN_INTERFACE_H
diff --git a/libsanitizer/include/sanitizer/linux_syscall_hooks.h b/libsanitizer/include/sanitizer/linux_syscall_hooks.h
index 17742b6..34bb291 100644
--- a/libsanitizer/include/sanitizer/linux_syscall_hooks.h
+++ b/libsanitizer/include/sanitizer/linux_syscall_hooks.h
@@ -1833,6 +1833,17 @@
   __sanitizer_syscall_pre_impl_vfork()
 #define __sanitizer_syscall_post_vfork(res) \
   __sanitizer_syscall_post_impl_vfork(res)
+#define __sanitizer_syscall_pre_sigaction(signum, act, oldact)                 \
+  __sanitizer_syscall_pre_impl_sigaction((long)signum, (long)act, (long)oldact)
+#define __sanitizer_syscall_post_sigaction(res, signum, act, oldact)           \
+  __sanitizer_syscall_post_impl_sigaction(res, (long)signum, (long)act,        \
+                                          (long)oldact)
+#define __sanitizer_syscall_pre_rt_sigaction(signum, act, oldact, sz)          \
+  __sanitizer_syscall_pre_impl_rt_sigaction((long)signum, (long)act,           \
+                                            (long)oldact, (long)sz)
+#define __sanitizer_syscall_post_rt_sigaction(res, signum, act, oldact, sz)    \
+  __sanitizer_syscall_post_impl_rt_sigaction(res, (long)signum, (long)act,     \
+                                             (long)oldact, (long)sz)
 
 // And now a few syscalls we don't handle yet.
 #define __sanitizer_syscall_pre_afs_syscall(...)
@@ -1887,7 +1898,6 @@
 #define __sanitizer_syscall_pre_query_module(...)
 #define __sanitizer_syscall_pre_readahead(...)
 #define __sanitizer_syscall_pre_readdir(...)
-#define __sanitizer_syscall_pre_rt_sigaction(...)
 #define __sanitizer_syscall_pre_rt_sigreturn(...)
 #define __sanitizer_syscall_pre_rt_sigsuspend(...)
 #define __sanitizer_syscall_pre_security(...)
@@ -1901,7 +1911,6 @@
 #define __sanitizer_syscall_pre_setreuid32(...)
 #define __sanitizer_syscall_pre_set_thread_area(...)
 #define __sanitizer_syscall_pre_setuid32(...)
-#define __sanitizer_syscall_pre_sigaction(...)
 #define __sanitizer_syscall_pre_sigaltstack(...)
 #define __sanitizer_syscall_pre_sigreturn(...)
 #define __sanitizer_syscall_pre_sigsuspend(...)
@@ -1969,7 +1978,6 @@
 #define __sanitizer_syscall_post_query_module(res, ...)
 #define __sanitizer_syscall_post_readahead(res, ...)
 #define __sanitizer_syscall_post_readdir(res, ...)
-#define __sanitizer_syscall_post_rt_sigaction(res, ...)
 #define __sanitizer_syscall_post_rt_sigreturn(res, ...)
 #define __sanitizer_syscall_post_rt_sigsuspend(res, ...)
 #define __sanitizer_syscall_post_security(res, ...)
@@ -1983,7 +1991,6 @@
 #define __sanitizer_syscall_post_setreuid32(res, ...)
 #define __sanitizer_syscall_post_set_thread_area(res, ...)
 #define __sanitizer_syscall_post_setuid32(res, ...)
-#define __sanitizer_syscall_post_sigaction(res, ...)
 #define __sanitizer_syscall_post_sigaltstack(res, ...)
 #define __sanitizer_syscall_post_sigreturn(res, ...)
 #define __sanitizer_syscall_post_sigsuspend(res, ...)
@@ -3060,7 +3067,13 @@ void __sanitizer_syscall_pre_impl_fork();
 void __sanitizer_syscall_post_impl_fork(long res);
 void __sanitizer_syscall_pre_impl_vfork();
 void __sanitizer_syscall_post_impl_vfork(long res);
-
+void __sanitizer_syscall_pre_impl_sigaction(long signum, long act, long oldact);
+void __sanitizer_syscall_post_impl_sigaction(long res, long signum, long act,
+                                             long oldact);
+void __sanitizer_syscall_pre_impl_rt_sigaction(long signum, long act,
+                                               long oldact, long sz);
+void __sanitizer_syscall_post_impl_rt_sigaction(long res, long signum, long act,
+                                                long oldact, long sz);
 #ifdef __cplusplus
 }  // extern "C"
 #endif