move pst_call_site & pst_parameter to C language and separate them

2020-02-01 17:09:12 +04:00
parent 8251ba526f
commit e27f0c5c18
11 changed files with 978 additions and 804 deletions
@@ -0,0 +1,84 @@
+/*
+ * dwarf_function.h
+ *
+ *  Created on: Feb 1, 2020
+ *      Author: nnosov
+ */
+
+#ifndef FRAMEWORK_DWARF_FUNCTION_H_
+#define FRAMEWORK_DWARF_FUNCTION_H_
+
+#include "context.h"
+#include "dwarf_expression.h"
+#include "list_head.h"
+#include "dwarf_call_site.h"
+#include "dwarf_parameter.h"
+
+// -----------------------------------------------------------------------------------
+// pst_function
+// -----------------------------------------------------------------------------------
+typedef struct __pst_function : public SC_ListNode {
+    __pst_function(pst_context* _ctx, __pst_function* _parent) : ctx(_ctx) {
+        pc = 0;
+        line = -1;
+        die = NULL;
+        lowpc = 0;
+        highpc = 0;
+        memcpy(&cursor, _ctx->curr_frame, sizeof(cursor));
+        parent = _parent;
+        sp = 0;
+        cfa = 0;
+        frame = NULL;
+    }
+
+    ~__pst_function() {
+        clear();
+        if(frame) {
+            free(frame);
+        }
+    }
+
+    void clear();
+    pst_parameter* add_param();
+    void del_param(pst_parameter* p);
+    pst_parameter* next_param(pst_parameter* p);
+
+    pst_call_site* add_call_site(uint64_t target, const char* origin);
+    void del_call_site(pst_call_site* st);
+    pst_call_site* next_call_site(pst_call_site* st);
+    pst_call_site* call_site_by_origin(const char* origin);
+    pst_call_site* call_site_by_target(uint64_t target);
+
+    bool unwind(Dwarf_Addr addr);
+    bool handle_dwarf(Dwarf_Die* d);
+    bool print_dwarf();
+    bool handle_lexical_block(Dwarf_Die* result);
+    bool handle_call_site(Dwarf_Die* result);
+    pst_call_site* find_call_site(__pst_function* callee);
+
+    bool get_frame();
+
+    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
+    Dwarf_Die*                  die;    // DWARF DIE containing definition of the function
+    std::string                 name;   // function's name
+    SC_ListHead                 params; // function's parameters
+
+    // call-site
+    SC_ListHead                 call_sites;     // Call-Site definitions
+    SC_Dict                     mCallStToTarget; // map pointer to caller to call-site
+    SC_Dict                     mCallStToOrigin; // map caller name to call-site
+
+    unw_word_t                  pc;     // address between lowpc & highpc (plus base address offset). actually, currently executed command
+    unw_word_t                  sp;     // SP register in function's frame
+    unw_word_t                  cfa;    // CFA (Canonical Frame Adress) of the function
+    unw_cursor_t                cursor; // copy of stack state of the function
+    int                         line;   // line in code where function is defined
+    std::string                 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
+} pst_function;
+
+
+#endif /* FRAMEWORK_DWARF_FUNCTION_H_ */