diff --git a/debuggerd/libdebuggerd/arm/machine.cpp b/debuggerd/libdebuggerd/arm/machine.cpp
index 78c2306..ac833ae 100644
--- a/debuggerd/libdebuggerd/arm/machine.cpp
+++ b/debuggerd/libdebuggerd/arm/machine.cpp
@@ -48,6 +48,21 @@
   }
 }
 
+#define DUMP_GP_REGISTERS(log, reg_prefix)                                             \
+  _LOG(log, logtype::REGISTERS, "    r0 %08x  r1 %08x  r2 %08x  r3 %08x\n",            \
+       static_cast<uint32_t>(reg_prefix##r0), static_cast<uint32_t>(reg_prefix##r1),   \
+       static_cast<uint32_t>(reg_prefix##r2), static_cast<uint32_t>(reg_prefix##r3));  \
+  _LOG(log, logtype::REGISTERS, "    r4 %08x  r5 %08x  r6 %08x  r7 %08x\n",            \
+       static_cast<uint32_t>(reg_prefix##r4), static_cast<uint32_t>(reg_prefix##r5),   \
+       static_cast<uint32_t>(reg_prefix##r6), static_cast<uint32_t>(reg_prefix##r7));  \
+  _LOG(log, logtype::REGISTERS, "    r8 %08x  r9 %08x  sl %08x  fp %08x\n",            \
+       static_cast<uint32_t>(reg_prefix##r8), static_cast<uint32_t>(reg_prefix##r9),   \
+       static_cast<uint32_t>(reg_prefix##r10), static_cast<uint32_t>(reg_prefix##fp)); \
+  _LOG(log, logtype::REGISTERS, "    ip %08x  sp %08x  lr %08x  pc %08x  cpsr %08x\n", \
+       static_cast<uint32_t>(reg_prefix##ip), static_cast<uint32_t>(reg_prefix##sp),   \
+       static_cast<uint32_t>(reg_prefix##lr), static_cast<uint32_t>(reg_prefix##pc),   \
+       static_cast<uint32_t>(reg_prefix##cpsr))
+
 void dump_registers(log_t* log, pid_t tid) {
   pt_regs r;
   if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
@@ -55,19 +70,7 @@
     return;
   }
 
-  _LOG(log, logtype::REGISTERS, "    r0 %08x  r1 %08x  r2 %08x  r3 %08x\n",
-       static_cast<uint32_t>(r.ARM_r0), static_cast<uint32_t>(r.ARM_r1),
-       static_cast<uint32_t>(r.ARM_r2), static_cast<uint32_t>(r.ARM_r3));
-  _LOG(log, logtype::REGISTERS, "    r4 %08x  r5 %08x  r6 %08x  r7 %08x\n",
-       static_cast<uint32_t>(r.ARM_r4), static_cast<uint32_t>(r.ARM_r5),
-       static_cast<uint32_t>(r.ARM_r6), static_cast<uint32_t>(r.ARM_r7));
-  _LOG(log, logtype::REGISTERS, "    r8 %08x  r9 %08x  sl %08x  fp %08x\n",
-       static_cast<uint32_t>(r.ARM_r8), static_cast<uint32_t>(r.ARM_r9),
-       static_cast<uint32_t>(r.ARM_r10), static_cast<uint32_t>(r.ARM_fp));
-  _LOG(log, logtype::REGISTERS, "    ip %08x  sp %08x  lr %08x  pc %08x  cpsr %08x\n",
-       static_cast<uint32_t>(r.ARM_ip), static_cast<uint32_t>(r.ARM_sp),
-       static_cast<uint32_t>(r.ARM_lr), static_cast<uint32_t>(r.ARM_pc),
-       static_cast<uint32_t>(r.ARM_cpsr));
+  DUMP_GP_REGISTERS(log, r.ARM_);
 
   user_vfp vfp_regs;
   if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
@@ -81,3 +84,7 @@
   }
   _LOG(log, logtype::FP_REGISTERS, "    scr %08lx\n", vfp_regs.fpscr);
 }
+
+void dump_registers(log_t* log, const ucontext_t* uc) {
+  DUMP_GP_REGISTERS(log, uc->uc_mcontext.arm_);
+}
diff --git a/debuggerd/libdebuggerd/arm64/machine.cpp b/debuggerd/libdebuggerd/arm64/machine.cpp
index e7bf79a..fa73c99 100644
--- a/debuggerd/libdebuggerd/arm64/machine.cpp
+++ b/debuggerd/libdebuggerd/arm64/machine.cpp
@@ -52,6 +52,17 @@
   }
 }
 
+#define DUMP_GP_REGISTERS(log)                                                                   \
+  for (int i = 0; i < 28; i += 4) {                                                              \
+    const char* fmt = "    x%-2d  %016llx  x%-2d  %016llx  x%-2d  %016llx  x%-2d  %016llx\n";    \
+    _LOG(log, logtype::REGISTERS, fmt, i, r.regs[i], i + 1, r.regs[i + 1], i + 2, r.regs[i + 2], \
+         i + 3, r.regs[i + 3]);                                                                  \
+  }                                                                                              \
+  _LOG(log, logtype::REGISTERS, "    x28  %016llx  x29  %016llx  x30  %016llx\n", r.regs[28],    \
+       r.regs[29], r.regs[30]);                                                                  \
+  _LOG(log, logtype::REGISTERS, "    sp   %016llx  pc   %016llx  pstate %016llx\n", r.sp, r.pc,  \
+       r.pstate)
+
 void dump_registers(log_t* log, pid_t tid) {
   struct user_pt_regs r;
   struct iovec io;
@@ -63,20 +74,7 @@
     return;
   }
 
-  for (int i = 0; i < 28; i += 4) {
-    _LOG(log, logtype::REGISTERS,
-         "    x%-2d  %016llx  x%-2d  %016llx  x%-2d  %016llx  x%-2d  %016llx\n",
-         i, r.regs[i],
-         i+1, r.regs[i+1],
-         i+2, r.regs[i+2],
-         i+3, r.regs[i+3]);
-  }
-
-  _LOG(log, logtype::REGISTERS, "    x28  %016llx  x29  %016llx  x30  %016llx\n",
-       r.regs[28], r.regs[29], r.regs[30]);
-
-  _LOG(log, logtype::REGISTERS, "    sp   %016llx  pc   %016llx  pstate %016llx\n",
-       r.sp, r.pc, r.pstate);
+  DUMP_GP_REGISTERS(log);
 
   struct user_fpsimd_state f;
   io.iov_base = &f;
@@ -99,3 +97,8 @@
   }
   _LOG(log, logtype::FP_REGISTERS, "    fpsr %08x  fpcr %08x\n", f.fpsr, f.fpcr);
 }
+
+void dump_registers(log_t* log, const ucontext_t* ucontext) {
+  const mcontext_t& r = ucontext->uc_mcontext;
+  DUMP_GP_REGISTERS(log);
+}
diff --git a/debuggerd/libdebuggerd/include/machine.h b/debuggerd/libdebuggerd/include/machine.h
index e65b147..5e56682 100644
--- a/debuggerd/libdebuggerd/include/machine.h
+++ b/debuggerd/libdebuggerd/include/machine.h
@@ -25,5 +25,6 @@
 
 void dump_memory_and_code(log_t* log, Backtrace* backtrace);
 void dump_registers(log_t* log, pid_t tid);
+void dump_registers(log_t* log, const ucontext_t* uc);
 
 #endif // _DEBUGGERD_MACHINE_H
diff --git a/debuggerd/libdebuggerd/tombstone.cpp b/debuggerd/libdebuggerd/tombstone.cpp
index 0c38449..06b2dac 100644
--- a/debuggerd/libdebuggerd/tombstone.cpp
+++ b/debuggerd/libdebuggerd/tombstone.cpp
@@ -470,6 +470,11 @@
   }
 }
 
+// Weak noop implementation, real implementations are in <arch>/machine.cpp.
+__attribute__((weak)) void dump_registers(log_t* log, const ucontext_t*) {
+  _LOG(log, logtype::REGISTERS, "    register dumping unimplemented on this architecture");
+}
+
 static void dump_thread(log_t* log, pid_t pid, pid_t tid, const std::string& process_name,
                         const std::string& thread_name, BacktraceMap* map,
                         uintptr_t abort_msg_address, bool primary_thread) {
@@ -754,6 +759,8 @@
 
   std::unique_ptr<Backtrace> backtrace(Backtrace::Create(pid, tid));
   dump_abort_message(backtrace.get(), &log, abort_msg_address);
+  dump_registers(&log, ucontext);
+
   // TODO: Dump registers from the ucontext.
   if (backtrace->Unwind(0, ucontext)) {
     dump_backtrace_and_stack(backtrace.get(), &log);