diff --git a/libc/platform/bionic/tls_defines.h b/libc/platform/bionic/tls_defines.h
index 3e2efa3..8fe8701 100644
--- a/libc/platform/bionic/tls_defines.h
+++ b/libc/platform/bionic/tls_defines.h
@@ -68,6 +68,11 @@
 //
 //  - TLS_SLOT_APP: Available for use by apps in Android Q and later. (This slot
 //    was used for errno in P and earlier.)
+//
+//  - TLS_SLOT_NATIVE_BRIDGE_GUEST_STATE: Pointer to the guest state for native
+//    bridge implementations. It is (to be) used by debuggerd to access this
+//    state for guest aware crash reporting of the binary translated code.
+//    (Introduced in V)
 
 #if defined(__arm__) || defined(__aarch64__)
 
@@ -80,7 +85,8 @@
 // [1] "Addenda to, and Errata in, the ABI for the ARM Architecture". Section 3.
 // http://infocenter.arm.com/help/topic/com.arm.doc.ihi0045e/IHI0045E_ABI_addenda.pdf
 
-#define MIN_TLS_SLOT            (-1) // update this value when reserving a slot
+#define MIN_TLS_SLOT (-2)  // update this value when reserving a slot
+#define TLS_SLOT_NATIVE_BRIDGE_GUEST_STATE (-2)
 #define TLS_SLOT_BIONIC_TLS     (-1)
 #define TLS_SLOT_DTV              0
 #define TLS_SLOT_THREAD_ID        1
@@ -112,7 +118,8 @@
 #define TLS_SLOT_ART_THREAD_SELF  7
 #define TLS_SLOT_DTV              8
 #define TLS_SLOT_BIONIC_TLS       9
-#define MAX_TLS_SLOT              9 // update this value when reserving a slot
+#define TLS_SLOT_NATIVE_BRIDGE_GUEST_STATE 10
+#define MAX_TLS_SLOT 10  // update this value when reserving a slot
 
 #elif defined(__riscv)
 
@@ -123,8 +130,9 @@
 // [1]: RISC-V ELF Specification. Section: Thread Local Storage
 // https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-elf.adoc#thread-local-storage
 
-#define MIN_TLS_SLOT             (-9) // update this value when reserving a slot
+#define MIN_TLS_SLOT (-10)  // update this value when reserving a slot
 
+#define TLS_SLOT_NATIVE_BRIDGE_GUEST_STATE (-10)
 #define TLS_SLOT_BIONIC_TLS      (-9)
 #define TLS_SLOT_DTV             (-8)
 #define TLS_SLOT_THREAD_ID       (-7)