feat: adapt to Android 15 linker symbols

Author: sanfengAndroid

library/src/main/cpp/include/linker_macros.h

@@ -19,6 +19,8 @@
 #define ANDROID_LE_L1
 #define ANDROID_LE_O1
 #define ANDROID_LE_S
+#define ANDROID_LE_U
+#define ANDROID_LE_V
 
 #define MEMORY_FREE
 #define ONLY_READ

library/src/main/cpp/linker/linker_globals.cpp

@@ -545,6 +545,9 @@ bool ProxyLinker::SetLdDebugVerbosity(int level) {
   if (int *p = linker_symbol.g_ld_debug_verbosity.Get()) {
     *p = level;
     return true;
+  } else if (auto *config = linker_symbol.g_linker_debug_config.Get()) {
+    config->any = true;
+    return true;
   }
   return false;
 }

library/src/main/cpp/linker/linker_symbol.cpp

@@ -1,6 +1,8 @@
 #include "linker_symbol.h"
 
-#include "elf_reader.h"
+#include <android_level_compat.h>
+#include <elf_reader.h>
+
 #include "linker_globals.h"
 
 #if defined(__LP64__)
@@ -15,8 +17,13 @@ LinkerSymbol linker_symbol;
 void LinkerSymbol::InitSymbolName() {
   solist.name = "__dl__ZL6solist";
   g_ld_debug_verbosity.name = "__dl_g_ld_debug_verbosity";
+  g_linker_debug_config.name = "__dl_g_linker_debug_config";
   g_linker_logger.name = "__dl_g_linker_logger";
-  g_dl_mutex.name = "__dl__ZL10g_dl_mutex";
+  if (android_api >= __ANDROID_API_V__) {
+    g_dl_mutex.name = "__dl_g_dl_mutex";
+  } else {
+    g_dl_mutex.name = "__dl__ZL10g_dl_mutex";
+  }
   linker_dl_err_buf.name = "__dl__ZL19__linker_dl_err_buf";
 
   if (android_api >= __ANDROID_API_R__) {
@@ -127,6 +134,7 @@ bool LinkerSymbol::LoadSymbol() {
 
   APPEND_SYMBOL(solist);
   APPEND_SYMBOL(g_ld_debug_verbosity);
+  APPEND_SYMBOL(g_linker_debug_config);
   APPEND_SYMBOL(g_linker_logger);
   APPEND_SYMBOL(g_dl_mutex);
   APPEND_SYMBOL(linker_dl_err_buf);
@@ -165,12 +173,13 @@ bool LinkerSymbol::LoadSymbol() {
     if (!reader.LoadFromDisk(library)) {
       return false;
     }
-    internalAddresses = reader.FindInternalSymbols(internalSymbols);
+    internalAddresses = reader.FindInternalSymbols(internalSymbols, android_api >= __ANDROID_API_V__);
     if (internalAddresses.size() != internalSymbols.size()) {
       LOGE("find linker internal symbols failed.");
       return false;
     }
     if (!solist.Set(internalAddresses[0])) {
+      LOGE("find linker solist symbol failed.");
       return false;
     }
   }
@@ -190,6 +199,7 @@ bool LinkerSymbol::LoadSymbol() {
 
   ASSIGN_SYMBOL(solist);
   ASSIGN_SYMBOL(g_ld_debug_verbosity);
+  ASSIGN_SYMBOL(g_linker_debug_config);
   ASSIGN_SYMBOL(g_linker_logger);
   ASSIGN_SYMBOL(g_dl_mutex);
   ASSIGN_SYMBOL(linker_dl_err_buf);

library/src/main/cpp/linker/linker_symbol.h

@@ -70,9 +70,32 @@ struct LibrarySymbol : SymbolItem<soinfo, false> {
   static constexpr int type = 2;
 };
 
+ANDROID_GE_V struct LinkerDebugConfig {
+  // Set automatically if any of the more specific options are set.
+  bool any;
+
+  // Messages relating to calling ctors/dtors/ifuncs.
+  bool calls;
+  // Messages relating to CFI.
+  bool cfi;
+  // Messages relating to the dynamic section.
+  bool dynamic;
+  // Messages relating to symbol lookup.
+  bool lookup;
+  // Messages relating to relocation processing.
+  bool reloc;
+  // Messages relating to ELF properties.
+  bool props;
+  // TODO: "config" and "zip" seem likely to want to be separate?
+
+  bool timing;
+  bool statistics;
+};
+
 struct LinkerSymbol {
   InternalSymbol<soinfo, true> solist;
-  InternalSymbol<int> g_ld_debug_verbosity{{.force = false}};
+  ANDROID_LE_U InternalSymbol<int> g_ld_debug_verbosity{{.force = false}};
+  ANDROID_GE_V InternalSymbol<LinkerDebugConfig> g_linker_debug_config{{.force = false}};
   InternalSymbol<uint32_t> g_linker_logger{{.force = false}};
   InternalSymbol<pthread_mutex_t> g_dl_mutex;
   InternalSymbol<char> linker_dl_err_buf;