https://github.com/abseil/abseil-cpp/commit/808bc202fc13e85a7948db0d7fb58f0f051200b1

From 808bc202fc13e85a7948db0d7fb58f0f051200b1 Mon Sep 17 00:00:00 2001
From: imaiguo <maaiguo@uniontech.com>
Date: Wed, 23 Feb 2022 22:56:32 +0800
Subject: [PATCH] Add support of loongarch64 (#1110)

--- a/absl/debugging/internal/examine_stack.cc
+++ b/absl/debugging/internal/examine_stack.cc
@@ -82,6 +82,8 @@ void* GetProgramCounter(void* vuc) {
       return reinterpret_cast<void*>(context->uc_mcontext.gregs[16]);
 #elif defined(__e2k__)
     return reinterpret_cast<void*>(context->uc_mcontext.cr0_hi);
+#elif defined(__loongarch__)
+    return reinterpret_cast<void*>(context->uc_mcontext.__pc);
 #else
 #error "Undefined Architecture."
 #endif