'Generic Commit'

Dockerfile.dropshell-build

@@ -22,12 +22,17 @@ RUN apk add --no-cache \
     libunwind \
     libunwind-dev \
     libunwind-static \
-    libunwind-dbg \
     zlib-dev \
     zlib-static \
+    xz \
     xz-dev \
     xz-static \
-    xz-libs
+    xz-libs \
+    libdwarf \
+    libdwarf-dev \
+    elfutils \
+    elfutils-dev \
+    elfutils-libelf
 
 #RUN apk add --no-cache --update --repository=https://dl-cdn.alpinelinux.org/alpine/v3.16/main/ libexecinfo-dev
 

ipdemo/CMakeLists.txt

@@ -84,14 +84,13 @@ FetchContent_MakeAvailable(nlohmann_json)
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(LIBUNWIND REQUIRED IMPORTED_TARGET libunwind)
 
-# Additional required libraries for static linking
+# Required libraries for basic stack tracing
 set(EXTRA_LIBS
     ${LIBUNWIND_LIBRARIES}
     -lunwind
     -lunwind-x86_64
-    -llzma
-    -lz
-    -ldl
+    -llzma  # Required by libunwind for debug info
+    -ldl    # For dladdr
 )
 
 # Link libraries

ipdemo/src/assert.hpp

@@ -6,6 +6,19 @@
 #include <cxxabi.h>
 #include <libunwind.h>
 #include <dlfcn.h>
+#include <cstring>
+#include <memory>
+
+// Simple RAII wrapper for file descriptor
+class FileDescriptor {
+    int fd_ = -1;
+public:
+    explicit FileDescriptor(int fd) : fd_(fd) {}
+    ~FileDescriptor() { if (fd_ != -1) close(fd_); }
+    operator int() const { return fd_; }
+    FileDescriptor(const FileDescriptor&) = delete;
+    FileDescriptor& operator=(const FileDescriptor&) = delete;
+};
 
 void print_stacktrace() {
     unw_cursor_t cursor;
@@ -14,6 +27,7 @@ void print_stacktrace() {
     char sym[256];
     char *name = sym;
     int status;
+    int frame_num = 0;
 
     // Initialize cursor to current frame
     unw_getcontext(&context);
@@ -28,21 +42,30 @@ void print_stacktrace() {
             break;
         }
 
+        std::cerr << "#" << frame_num++ << " ";
+
         // Get symbol name
         if (unw_get_proc_name(&cursor, sym, sizeof(sym), &offset) == 0) {
             // Demangle the C++ name
-            int status;
+            int status = 0;
             size_t length = sizeof(sym);
             name = abi::__cxa_demangle(sym, nullptr, &length, &status);
-            if (name == nullptr) {
-                name = sym;
+            
+            Dl_info info;
+            if (dladdr(reinterpret_cast<void*>(pc), &info) && info.dli_fname) {
+                std::cerr << "in " << info.dli_fname << ": ";
             }
-            std::cerr << "  0x" << std::hex << pc << ": " << name << " + 0x" << offset << "\n";
-            if (name != sym) {
+            
+            if (name) {
+                std::cerr << name << " + 0x" << std::hex << offset;
                 free(name);
+            } else {
+                std::cerr << sym << " + 0x" << std::hex << offset;
             }
+            
+            std::cerr << " [0x" << std::hex << pc << "]\n";
         } else {
-            std::cerr << "  0x" << std::hex << pc << ": [unknown]\n";
+            std::cerr << "[unknown] [0x" << std::hex << pc << "]\n";
         }
     }
 }