Make pbtombstone a host tool.

This is preparation for the next patch, which adds host-side
symbolization capabilities to pbtombstone.

Bug: 328531087
Change-Id: Id5813ae6b121af784643b1ed76084e49fdca118b

debuggerd/Android.bp

@@ -200,22 +200,18 @@ cc_library {
     ramdisk_available: true,
     recovery_available: true,
     vendor_ramdisk_available: true,
+    host_supported: true,
 
     local_include_dirs: ["libdebuggerd/include"],
     export_include_dirs: ["libdebuggerd/include"],
 
     srcs: [
         "libdebuggerd/tombstone_proto_to_text.cpp",
-    ],
-
-    header_libs: [
-        "bionic_libc_platform_headers",
+        "libdebuggerd/utility_host.cpp",
     ],
 
     static_libs: [
         "libbase",
-        "liblog_for_runtime_apex",
-        "libunwindstack",
     ],
 
     whole_static_libs: [
@@ -223,6 +219,10 @@ cc_library {
         "libprotobuf-cpp-lite",
     ],
 
+    shared_libs: [
+        "liblog",
+    ],
+
     apex_available: [
         "//apex_available:platform",
         "com.android.runtime",
@@ -331,15 +331,15 @@ cc_library_static {
 
 cc_binary {
     name: "pbtombstone",
+    host_supported: true,
     defaults: ["debuggerd_defaults"],
     srcs: ["pbtombstone.cpp"],
     static_libs: [
         "libbase",
-        "libdebuggerd",
+        "libdebuggerd_tombstone_proto_to_text",
         "liblog",
         "libprotobuf-cpp-lite",
         "libtombstone_proto",
-        "libunwindstack",
     ],
 }
 

debuggerd/debuggerd_test.cpp

@@ -70,6 +70,7 @@
 #include "crash_test.h"
 #include "debuggerd/handler.h"
 #include "gtest/gtest.h"
+#include "libdebuggerd/utility_host.h"
 #include "protocol.h"
 #include "tombstoned/tombstoned.h"
 #include "util.h"
@@ -741,8 +742,6 @@ TEST_F(CrasherTest, mte_multiple_causes) {
 }
 
 #if defined(__aarch64__)
-constexpr size_t kTagGranuleSize = 16;
-
 static uintptr_t CreateTagMapping() {
   // Some of the MTE tag dump tests assert that there is an inaccessible page to the left and right
   // of the PROT_MTE page, so map three pages and set the two guard pages to PROT_NONE.

debuggerd/libdebuggerd/include/libdebuggerd/tombstone.h

@@ -67,10 +67,6 @@ void engrave_tombstone_proto(Tombstone* tombstone, unwindstack::AndroidUnwinder*
                              const Architecture* guest_arch,
                              unwindstack::AndroidUnwinder* guest_unwinder);
 
-bool tombstone_proto_to_text(
-    const Tombstone& tombstone,
-    std::function<void(const std::string& line, bool should_log)> callback);
-
 void fill_in_backtrace_frame(BacktraceFrame* f, const unwindstack::FrameData& frame);
 void set_human_readable_cause(Cause* cause, uint64_t fault_addr);
 #if defined(__aarch64__)

debuggerd/libdebuggerd/include/libdebuggerd/tombstone_proto_to_text.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <functional>
+#include <string>
+
+class Tombstone;
+
+bool tombstone_proto_to_text(
+    const Tombstone& tombstone,
+    std::function<void(const std::string& line, bool should_log)> callback);

debuggerd/libdebuggerd/include/libdebuggerd/utility.h

@@ -91,10 +91,3 @@ bool signal_has_si_addr(const siginfo_t*);
 void get_signal_sender(char* buf, size_t n, const siginfo_t*);
 const char* get_signame(const siginfo_t*);
 const char* get_sigcode(const siginfo_t*);
-
-// Number of bytes per MTE granule.
-constexpr size_t kTagGranuleSize = 16;
-
-// Number of rows and columns to display in an MTE tag dump.
-constexpr size_t kNumTagColumns = 16;
-constexpr size_t kNumTagRows = 16;

debuggerd/libdebuggerd/include/libdebuggerd/utility_host.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2024, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+
+#include <stddef.h>
+
+std::string describe_tagged_addr_ctrl(long ctrl);
+std::string describe_pac_enabled_keys(long keys);
+
+// Number of bytes per MTE granule.
+constexpr size_t kTagGranuleSize = 16;
+
+// Number of rows and columns to display in an MTE tag dump.
+constexpr size_t kNumTagColumns = 16;
+constexpr size_t kNumTagRows = 16;

debuggerd/libdebuggerd/scudo.cpp

@@ -18,6 +18,7 @@
 
 #include "libdebuggerd/scudo.h"
 #include "libdebuggerd/tombstone.h"
+#include "libdebuggerd/utility_host.h"
 
 #include "unwindstack/AndroidUnwinder.h"
 #include "unwindstack/Memory.h"

debuggerd/libdebuggerd/test/tombstone_proto_to_text_test.cpp

@@ -22,6 +22,7 @@
 #include <android-base/test_utils.h>
 
 #include "libdebuggerd/tombstone.h"
+#include "libdebuggerd/tombstone_proto_to_text.h"
 #include "tombstone.pb.h"
 
 using CallbackType = std::function<void(const std::string& line, bool should_log)>;

debuggerd/libdebuggerd/tombstone.cpp

@@ -17,6 +17,7 @@
 #define LOG_TAG "DEBUG"
 
 #include "libdebuggerd/tombstone.h"
+#include "libdebuggerd/tombstone_proto_to_text.h"
 
 #include <errno.h>
 #include <signal.h>

debuggerd/libdebuggerd/tombstone_proto.cpp

@@ -69,6 +69,7 @@
 
 #include "libdebuggerd/open_files_list.h"
 #include "libdebuggerd/utility.h"
+#include "libdebuggerd/utility_host.h"
 #include "util.h"
 
 #include "tombstone.pb.h"

debuggerd/libdebuggerd/tombstone_proto_to_text.cpp

@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-#include <libdebuggerd/tombstone.h>
+#include <libdebuggerd/tombstone_proto_to_text.h>
+#include <libdebuggerd/utility_host.h>
 
 #include <inttypes.h>
 
@@ -30,8 +31,6 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
-#include <bionic/macros.h>
-#include <sys/prctl.h>
 
 #include "tombstone.pb.h"
 
@@ -57,28 +56,6 @@ static std::string describe_end(long value, std::string& desc) {
   return desc.empty() ? "" : " (" + desc.substr(2) + ")";
 }
 
-static std::string describe_tagged_addr_ctrl(long value) {
-  std::string desc;
-  DESCRIBE_FLAG(PR_TAGGED_ADDR_ENABLE);
-  DESCRIBE_FLAG(PR_MTE_TCF_SYNC);
-  DESCRIBE_FLAG(PR_MTE_TCF_ASYNC);
-  if (value & PR_MTE_TAG_MASK) {
-    desc += StringPrintf(", mask 0x%04lx", (value & PR_MTE_TAG_MASK) >> PR_MTE_TAG_SHIFT);
-    value &= ~PR_MTE_TAG_MASK;
-  }
-  return describe_end(value, desc);
-}
-
-static std::string describe_pac_enabled_keys(long value) {
-  std::string desc;
-  DESCRIBE_FLAG(PR_PAC_APIAKEY);
-  DESCRIBE_FLAG(PR_PAC_APIBKEY);
-  DESCRIBE_FLAG(PR_PAC_APDAKEY);
-  DESCRIBE_FLAG(PR_PAC_APDBKEY);
-  DESCRIBE_FLAG(PR_PAC_APGAKEY);
-  return describe_end(value, desc);
-}
-
 static const char* abi_string(const Architecture& arch) {
   switch (arch) {
     case Architecture::ARM32:
@@ -113,6 +90,13 @@ static int pointer_width(const Tombstone& tombstone) {
   }
 }
 
+static uint64_t untag_address(Architecture arch, uint64_t addr) {
+  if (arch == Architecture::ARM64) {
+    return addr & ((1ULL << 56) - 1);
+  }
+  return addr;
+}
+
 static void print_thread_header(CallbackType callback, const Tombstone& tombstone,
                                 const Thread& thread, bool should_log) {
   const char* process_name = "<unknown>";
@@ -321,7 +305,8 @@ static void print_tag_dump(CallbackType callback, const Tombstone& tombstone) {
 
   size_t tag_index = 0;
   size_t num_tags = tags.length();
-  uintptr_t fault_granule = untag_address(signal.fault_address()) & ~(kTagGranuleSize - 1);
+  uintptr_t fault_granule =
+      untag_address(tombstone.arch(), signal.fault_address()) & ~(kTagGranuleSize - 1);
   for (size_t row = 0; tag_index < num_tags; ++row) {
     uintptr_t row_addr =
         (memory_dump.begin_address() + row * kNumTagColumns * kTagGranuleSize) & kRowStartMask;
@@ -369,7 +354,7 @@ static void print_memory_maps(CallbackType callback, const Tombstone& tombstone)
 
   const Signal& signal_info = tombstone.signal_info();
   bool has_fault_address = signal_info.has_fault_address();
-  uint64_t fault_address = untag_address(signal_info.fault_address());
+  uint64_t fault_address = untag_address(tombstone.arch(), signal_info.fault_address());
   bool preamble_printed = false;
   bool printed_fault_address_marker = false;
   for (const auto& map : tombstone.memory_mappings()) {

debuggerd/libdebuggerd/utility.cpp

@@ -17,6 +17,7 @@
 #define LOG_TAG "DEBUG"
 
 #include "libdebuggerd/utility.h"
+#include "libdebuggerd/utility_host.h"
 
 #include <errno.h>
 #include <signal.h>

debuggerd/libdebuggerd/utility_host.cpp

@@ -0,0 +1,101 @@
+/*
+ * Copyright 2024, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "libdebuggerd/utility_host.h"
+
+#include <sys/prctl.h>
+
+#include <string>
+
+#include <android-base/stringprintf.h>
+
+using android::base::StringPrintf;
+
+#ifndef PR_MTE_TAG_SHIFT
+#define PR_MTE_TAG_SHIFT 3
+#endif
+
+#ifndef PR_MTE_TAG_MASK
+#define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT)
+#endif
+
+#ifndef PR_MTE_TCF_ASYNC
+#define PR_MTE_TCF_ASYNC (1UL << 2)
+#endif
+
+#ifndef PR_MTE_TCF_SYNC
+#define PR_MTE_TCF_SYNC (1UL << 1)
+#endif
+
+#ifndef PR_PAC_APIAKEY
+#define PR_PAC_APIAKEY (1UL << 0)
+#endif
+
+#ifndef PR_PAC_APIBKEY
+#define PR_PAC_APIBKEY (1UL << 1)
+#endif
+
+#ifndef PR_PAC_APDAKEY
+#define PR_PAC_APDAKEY (1UL << 2)
+#endif
+
+#ifndef PR_PAC_APDBKEY
+#define PR_PAC_APDBKEY (1UL << 3)
+#endif
+
+#ifndef PR_PAC_APGAKEY
+#define PR_PAC_APGAKEY (1UL << 4)
+#endif
+
+#ifndef PR_TAGGED_ADDR_ENABLE
+#define PR_TAGGED_ADDR_ENABLE (1UL << 0)
+#endif
+
+#define DESCRIBE_FLAG(flag) \
+  if (value & flag) {       \
+    desc += ", ";           \
+    desc += #flag;          \
+    value &= ~flag;         \
+  }
+
+static std::string describe_end(long value, std::string& desc) {
+  if (value) {
+    desc += StringPrintf(", unknown 0x%lx", value);
+  }
+  return desc.empty() ? "" : " (" + desc.substr(2) + ")";
+}
+
+std::string describe_tagged_addr_ctrl(long value) {
+  std::string desc;
+  DESCRIBE_FLAG(PR_TAGGED_ADDR_ENABLE);
+  DESCRIBE_FLAG(PR_MTE_TCF_SYNC);
+  DESCRIBE_FLAG(PR_MTE_TCF_ASYNC);
+  if (value & PR_MTE_TAG_MASK) {
+    desc += StringPrintf(", mask 0x%04lx", (value & PR_MTE_TAG_MASK) >> PR_MTE_TAG_SHIFT);
+    value &= ~PR_MTE_TAG_MASK;
+  }
+  return describe_end(value, desc);
+}
+
+std::string describe_pac_enabled_keys(long value) {
+  std::string desc;
+  DESCRIBE_FLAG(PR_PAC_APIAKEY);
+  DESCRIBE_FLAG(PR_PAC_APIBKEY);
+  DESCRIBE_FLAG(PR_PAC_APDAKEY);
+  DESCRIBE_FLAG(PR_PAC_APDBKEY);
+  DESCRIBE_FLAG(PR_PAC_APGAKEY);
+  return describe_end(value, desc);
+}

debuggerd/pbtombstone.cpp

@@ -20,7 +20,7 @@
 #include <unistd.h>
 
 #include <android-base/unique_fd.h>
-#include <libdebuggerd/tombstone.h>
+#include <libdebuggerd/tombstone_proto_to_text.h>
 
 #include "tombstone.pb.h"
 

debuggerd/proto/Android.bp

@@ -38,6 +38,7 @@ cc_library_static {
     ramdisk_available: true,
     recovery_available: true,
     vendor_ramdisk_available: true,
+    host_supported: true,
 }
 
 java_library_static {