code hierarchy refactoring

2020-02-05 09:41:22 +04:00
parent c21c623be4
commit 3c7105eb97
35 changed files with 145 additions and 113 deletions
@@ -0,0 +1,49 @@
+/*
+ * dwarf_function.h
+ *
+ *  Created on: Feb 1, 2020
+ *      Author: nnosov
+ */
+
+#ifndef SRC_DWARF_DWARF_FUNCTION_H_
+#define SRC_DWARF_DWARF_FUNCTION_H_
+
+#include "../src/dwarf/dwarf_call_site.h"
+#include "../src/dwarf/dwarf_expression.h"
+#include "../src/dwarf/dwarf_parameter.h"
+#include "../utils/list_head.h"
+#include "context.h"
+
+// -----------------------------------------------------------------------------------
+// pst_function
+// -----------------------------------------------------------------------------------
+typedef struct __pst_function {
+    list_node               node;
+
+    Dwarf_Addr              lowpc;      // offset to start of the function against base address
+    Dwarf_Addr              highpc;     // offset to the next address after the end of the function against base address
+    unw_word_t              pc;         // address between LowPC & HighPC (plus base address offset). actually, currently executed command
+    Dwarf_Die*              die;        // DWARF DIE containing definition of the function
+    char*                   name;       // function's name
+    list_head               params;     // function's parameters
+    pst_call_site_storage   call_sites;
+
+    unw_word_t              sp;         // SP register in function's frame
+    unw_word_t              cfa;        // CFA (Canonical Frame Address) of the function
+    unw_cursor_t            cursor;     // copy of stack state of the function
+    int                     line;       // line in code where function is defined
+    char*                   file;       // file name (DWARF Compilation Unit) where function is defined
+    __pst_function*         parent;     // parent function in call trace (caller)
+    Dwarf_Frame*            frame;      // function's stack frame
+    pst_context*            ctx;        // context of unwinding
+    bool                    allocated;  // whether this object was allocated or not
+} pst_function;
+void pst_function_init(pst_function* fn, pst_context* _ctx, __pst_function* _parent);
+pst_function* pst_function_new(pst_context* _ctx, __pst_function* _parent);
+void pst_function_fini(pst_function* fn);
+
+bool pst_function_unwind(pst_function* fn, Dwarf_Addr addr);
+bool pst_function_handle_dwarf(pst_function * fn, Dwarf_Die* d);
+bool pst_function_print_dwarf(pst_function* fn);
+
+#endif /* SRC_DWARF_DWARF_FUNCTION_H_ */