diff --git a/libc/bionic/android_set_abort_message.cpp b/libc/bionic/android_set_abort_message.cpp
index d5f8cb9..53d7576 100644
--- a/libc/bionic/android_set_abort_message.cpp
+++ b/libc/bionic/android_set_abort_message.cpp
@@ -28,9 +28,13 @@
 
 #include <android/set_abort_message.h>
 
+#include <async_safe/log.h>
+#include <bionic/set_abort_message_internal.h>
+
+#include <bits/stdatomic.h>
 #include <pthread.h>
-#include <stdint.h>
 #include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 #include <sys/mman.h>
 #include <sys/prctl.h>
@@ -56,6 +60,8 @@
               "The in-memory layout of magic_abort_msg_t is not consistent with what automated "
               "tools expect.");
 
+static _Atomic(crash_detail_t*) free_head = nullptr;
+
 [[clang::optnone]]
 static void fill_abort_message_magic(magic_abort_msg_t* new_magic_abort_message) {
   // 128-bit magic for the abort message. Chosen by fair dice roll.
@@ -97,3 +103,65 @@
   strcpy(new_magic_abort_message->msg.msg, msg);
   __libc_shared_globals()->abort_msg = &new_magic_abort_message->msg;
 }
+
+__BIONIC_WEAK_FOR_NATIVE_BRIDGE
+crash_detail_t* android_register_crash_detail(const void* name, size_t name_size, const void* data,
+                                              size_t data_size) {
+  auto populate_crash_detail = [&](crash_detail_t* result) {
+    result->name = reinterpret_cast<const char*>(name);
+    result->name_size = name_size;
+    result->data = reinterpret_cast<const char*>(data);
+    result->data_size = data_size;
+  };
+  // This is a atomic fast-path for RAII use-cases where the app keeps creating and deleting
+  // crash details for short periods of time to capture detailed scopes.
+  if (crash_detail_t* head = atomic_load(&free_head)) {
+    while (head != nullptr && !atomic_compare_exchange_strong(&free_head, &head, head->prev_free)) {
+      // intentionally left blank.
+    }
+    if (head) {
+      head->prev_free = nullptr;
+      populate_crash_detail(head);
+      return head;
+    }
+  }
+  ScopedPthreadMutexLocker locker(&__libc_shared_globals()->crash_detail_page_lock);
+  struct crash_detail_page_t* prev = nullptr;
+  struct crash_detail_page_t* page = __libc_shared_globals()->crash_detail_page;
+  if (page != nullptr && page->used == kNumCrashDetails) {
+    prev = page;
+    page = nullptr;
+  }
+  if (page == nullptr) {
+    size_t size = sizeof(crash_detail_page_t);
+    void* map = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
+    if (map == MAP_FAILED) {
+      async_safe_format_log(ANDROID_LOG_ERROR, "libc", "failed to allocate crash_detail_page: %m");
+      return nullptr;
+    }
+    prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, map, size, "crash details");
+    page = reinterpret_cast<struct crash_detail_page_t*>(map);
+    page->prev = prev;
+    __libc_shared_globals()->crash_detail_page = page;
+  }
+  crash_detail_t* result = &page->crash_details[page->used];
+  populate_crash_detail(result);
+  page->used++;
+  return result;
+}
+
+__BIONIC_WEAK_FOR_NATIVE_BRIDGE
+void android_unregister_crash_detail(crash_detail_t* crash_detail) {
+  if (crash_detail) {
+    if (crash_detail->prev_free) {
+      // removing already removed would mess up the free-list by creating a circle.
+      return;
+    }
+    crash_detail->data = nullptr;
+    crash_detail->name = nullptr;
+    crash_detail_t* prev = atomic_load(&free_head);
+    do {
+      crash_detail->prev_free = prev;
+    } while (!atomic_compare_exchange_strong(&free_head, &prev, crash_detail));
+  }
+}