Non-SFI mode: Remove old Non-SFI code.

components/nacl/loader/nonsfi/irt_icache_unittest.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#if defined(__arm__)  // nacl_irt_icache is supported only on ARM.
-
-#include <errno.h>
-#include <sys/mman.h>
-
-#include "components/nacl/loader/nonsfi/irt_interfaces.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-TEST(NaClIrtIcacheTest, ClearCache) {
-  int (*irt_clear_cache)(void*, size_t) =
-      nacl::nonsfi::kIrtIcache.clear_cache;
-  // Create code for a function to return 0x01.
-  static const uint32_t code_template[] = {
-    0xe3000001,  // movw r0, #0x1
-    0xe12fff1e,  // bx lr
-  };
-  void* start =
-      mmap(NULL, sizeof(code_template), PROT_READ | PROT_WRITE | PROT_EXEC,
-           MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-  EXPECT_NE(MAP_FAILED, start);
-  memcpy(start, code_template, sizeof(code_template));
-  size_t size = sizeof(code_template);
-  EXPECT_EQ(0, irt_clear_cache(start, size));
-  typedef int (*TestFunc)(void);
-  TestFunc func = reinterpret_cast<TestFunc>(start);
-  EXPECT_EQ(0x1, func());
-  // Modify the function to return 0x11.
-  *reinterpret_cast<uint32_t*>(start) = 0xe3000011;  // movw r0, #0x11
-  // In most cases 0x1 is still returned because the cached code is executed
-  // although the CPU is not obliged to do so.
-  // Uncomment the following line to see if the cached code is executed.
-  // EXPECT_EQ(0x1, func());
-  EXPECT_EQ(0, irt_clear_cache(start, size));
-  // Now it is ensured that 0x11 is returned because I-cache was invalidated
-  // and updated with the new code.
-  EXPECT_EQ(0x11, func());
-  EXPECT_EQ(0, munmap(start, sizeof(code_template)));
-}
-
-TEST(NaClIrtIcacheTest, ClearCacheInvalidArg) {
-  int (*irt_clear_cache)(void*, size_t) =
-      nacl::nonsfi::kIrtIcache.clear_cache;
-  const size_t mem_size = 256;
-  void* start =
-      mmap(NULL, mem_size, PROT_READ | PROT_WRITE | PROT_EXEC,
-           MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-  EXPECT_EQ(0, irt_clear_cache(start, mem_size));
-  EXPECT_EQ(EINVAL, irt_clear_cache(start, 0));
-  EXPECT_EQ(EINVAL, irt_clear_cache(NULL, mem_size));
-  EXPECT_EQ(0, munmap(start, mem_size));
-}
-
-#endif