Googletest export

Add support to run gtest on Xtensa platform.

This add support to run GTest base test suits on Xtensa
(https://ip.cadence.com/ipportfolio/tensilica-ip) base simulator.
Xtensa only provides libc and some basic operations and does not run an
operating system by default.

PiperOrigin-RevId: 368162205

2 files changed, 12 insertions, 5 deletions

diff --git a/googletest/include/gtest/internal/gtest-port-arch.h b/googletest/include/gtest/internal/gtest-port-arch.h
index ffe63003..dd845915 100644
--- a/googletest/include/gtest/internal/gtest-port-arch.h
+++ b/googletest/include/gtest/internal/gtest-port-arch.h
@@ -107,6 +107,8 @@
 #define GTEST_OS_ESP8266 1
 #elif defined ESP32
 #define GTEST_OS_ESP32 1
+#elif defined(__XTENSA__)
+#define GTEST_OS_XTENSA 1
 #endif  // __CYGWIN__
 
 #endif  // GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_ARCH_H_
diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
index 1c0deddd..0953a781 100644
--- a/googletest/include/gtest/internal/gtest-port.h
+++ b/googletest/include/gtest/internal/gtest-port.h
@@ -359,6 +359,10 @@ typedef struct _CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 // WindowsTypesTest.CRITICAL_SECTIONIs_RTL_CRITICAL_SECTION.
 typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 #endif
+#elif GTEST_OS_XTENSA
+#include <unistd.h>
+// Xtensa toolchains define strcasecmp in the string.h header instead of
+// strings.h. string.h is already included.
 #else
 // This assumes that non-Windows OSes provide unistd.h. For OSes where this
 // is not the case, we need to include headers that provide the functions
@@ -379,7 +383,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 // On Android, <regex.h> is only available starting with Gingerbread.
 #  define GTEST_HAS_POSIX_RE (__ANDROID_API__ >= 9)
 # else
-#  define GTEST_HAS_POSIX_RE (!GTEST_OS_WINDOWS)
+#define GTEST_HAS_POSIX_RE (!GTEST_OS_WINDOWS && !GTEST_OS_XTENSA)
 # endif
 #endif
 
@@ -464,7 +468,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 // no support for it at least as recent as Froyo (2.2).
 #define GTEST_HAS_STD_WSTRING                                         \
   (!(GTEST_OS_LINUX_ANDROID || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS || \
-     GTEST_OS_HAIKU || GTEST_OS_ESP32 || GTEST_OS_ESP8266))
+     GTEST_OS_HAIKU || GTEST_OS_ESP32 || GTEST_OS_ESP8266 || GTEST_OS_XTENSA))
 
 #endif  // GTEST_HAS_STD_WSTRING
 
@@ -589,7 +593,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 // By default, we assume that stream redirection is supported on all
 // platforms except known mobile ones.
 #if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || \
-    GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266
+    GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266 || GTEST_OS_XTENSA
 #  define GTEST_HAS_STREAM_REDIRECTION 0
 # else
 #  define GTEST_HAS_STREAM_REDIRECTION 1
@@ -2064,7 +2068,8 @@ GTEST_DISABLE_MSC_DEPRECATED_PUSH_()
 // StrError() aren't needed on Windows CE at this time and thus not
 // defined there.
 
-#if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
+#if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && \
+    !GTEST_OS_WINDOWS_RT && !GTEST_OS_ESP8266 && !GTEST_OS_XTENSA
 inline int ChDir(const char* dir) { return chdir(dir); }
 #endif
 inline FILE* FOpen(const char* path, const char* mode) {
@@ -2097,7 +2102,7 @@ inline const char* StrError(int errnum) { return strerror(errnum); }
 #endif
 inline const char* GetEnv(const char* name) {
 #if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || \
-    GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266
+    GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266 || GTEST_OS_XTENSA
   // We are on an embedded platform, which has no environment variables.
   static_cast<void>(name);  // To prevent 'unused argument' warning.
   return nullptr;