From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Andrew Kaster <andrewdkaster@gmail.com>
Date: Sat, 11 Mar 2023 15:17:34 -0700
Subject: [PATCH] backward: Pretend to be Linux, with some modifications

---
 backward.hpp | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/backward.hpp b/backward.hpp
index ac7ad51738f8d13f07a6162d421b191696c9f84a..03f4f7546c4e59f3b17529c61a0f387e09e3731c 100644
--- a/backward.hpp
+++ b/backward.hpp
@@ -63,7 +63,7 @@
 #elif defined(BACKWARD_SYSTEM_UNKNOWN)
 #elif defined(BACKWARD_SYSTEM_WINDOWS)
 #else
-#if defined(__linux) || defined(__linux__)
+#if defined(__linux) || defined(__linux__) || defined(__serenity__)
 #define BACKWARD_SYSTEM_LINUX
 #elif defined(__APPLE__)
 #define BACKWARD_SYSTEM_DARWIN
@@ -213,7 +213,9 @@
 #endif
 #include <signal.h>
 #include <sys/stat.h>
+#ifndef __serenity__
 #include <syscall.h>
+#endif
 #include <unistd.h>
 
 #if BACKWARD_HAS_BFD == 1
@@ -737,7 +739,7 @@ public:
 protected:
   void load_thread_info() {
 #ifdef BACKWARD_SYSTEM_LINUX
-#ifndef __ANDROID__
+#if !defined(__ANDROID__) && !defined(__serenity__)
     _thread_id = static_cast<size_t>(syscall(SYS_gettid));
 #else
     _thread_id = static_cast<size_t>(gettid());
@@ -4140,7 +4142,9 @@ public:
       SIGBUS,  // Bus error (bad memory access)
       SIGFPE,  // Floating point exception
       SIGILL,  // Illegal Instruction
+#if !defined(__serenity__)
       SIGIOT,  // IOT trap. A synonym for SIGABRT
+#endif
       SIGQUIT, // Quit from keyboard
       SIGSEGV, // Invalid memory reference
       SIGSYS,  // Bad argument to routine (SVr4)
@@ -4231,6 +4235,8 @@ public:
     error_addr = reinterpret_cast<void *>(uctx->uc_mcontext->__ss.__rip);
 #elif defined(__APPLE__)
     error_addr = reinterpret_cast<void *>(uctx->uc_mcontext->__ss.__eip);
+#elif defined(__serenity__) && defined(__x86_64__)
+    error_addr = reinterpret_cast<void*>(uctx->uc_mcontext.rip);
 #else
 #warning ":/ sorry, ain't know no nothing none not of your architecture!"
 #endif
@@ -4245,7 +4251,7 @@ public:
     printer.address = true;
     printer.print(st, stderr);
 
-#if _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
+#if (_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L) && !defined(__serenity__)
     psiginfo(info, nullptr);
 #else
     (void)info;