Add stackdump source

.gitignore

@@ -0,0 +1 @@
+/stackdump

Makefile

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+stackdump: stackdump.c Makefile
+	clang -o $@ -Wall -g stackdump.c -lunwind

stackdump.c

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+#define UNW_LOCAL_ONLY
+#include <libunwind.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+// Function to print the current stack trace
+void show_backtrace(void)
+{
+    unw_cursor_t cursor;
+    unw_context_t context;
+    unw_word_t ip, sp;
+    char sym[256];
+    unw_word_t offset;
+
+    // Initialize cursor to current frame for local unwinding
+    unw_getcontext(&context);
+    unw_init_local(&cursor, &context);
+
+    printf("--- Stack Trace ---\n");
+    // Unwind frames one by one
+    while (unw_step(&cursor) > 0) {
+        unw_get_reg(&cursor, UNW_REG_IP, &ip);
+        unw_get_reg(&cursor, UNW_REG_SP, &sp);
+        
+        // Try to get the function name
+        if (unw_get_proc_name(&cursor, sym, sizeof(sym), &offset) == 0) {
+            printf("0x%lx: (%s+0x%lx)\n", (long)ip, sym, (long)offset);
+        } else {
+            printf("0x%lx: -- no symbol name found --\n", (long)ip);
+        }
+    }
+    printf("-------------------\n");
+}
+
+void function_c(void)
+{
+    show_backtrace();
+}
+
+void function_b(void)
+{
+    function_c();
+}
+
+void function_a(void)
+{
+    function_b();
+}
+
+int main(int argc, char **argv)
+{
+    function_a();
+    return 0;
+}