57 lines
2.7 KiB
C
57 lines
2.7 KiB
C
/*
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* dwarf_function.h
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*
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* Created on: Feb 1, 2020
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* Author: nnosov
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*/
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#ifndef FRAMEWORK_DWARF_FUNCTION_H_
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#define FRAMEWORK_DWARF_FUNCTION_H_
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#include "context.h"
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#include "dwarf_expression.h"
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#include "list_head.h"
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#include "dwarf_call_site.h"
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#include "dwarf_parameter.h"
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// -----------------------------------------------------------------------------------
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// pst_function
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// -----------------------------------------------------------------------------------
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typedef struct __pst_function {
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list_node node; // uplink. !!! must be first !!!
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void (*clear) (pst_function* fn);
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pst_parameter* (*add_param) (pst_function* fn);
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void (*del_param) (pst_parameter* p);
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pst_parameter* (*next_param) (pst_function* fn, pst_parameter* p);
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bool (*unwind) (pst_function* fn, Dwarf_Addr addr);
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bool (*handle_dwarf) (pst_function* fn, Dwarf_Die* d);
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bool (*print_dwarf) (pst_function* fn);
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bool (*handle_lexical_block) (pst_function* fn, Dwarf_Die* result);
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bool (*get_frame) (pst_function* fn);
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Dwarf_Addr lowpc; // offset to start of the function against base address
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Dwarf_Addr highpc; // offset to the next address after the end of the function against base address
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unw_word_t pc; // address between LowPC & HighPC (plus base address offset). actually, currently executed command
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Dwarf_Die* die; // DWARF DIE containing definition of the function
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char* name; // function's name
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list_head params; // function's parameters
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pst_call_site_storage call_sites;
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unw_word_t sp; // SP register in function's frame
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unw_word_t cfa; // CFA (Canonical Frame Address) of the function
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unw_cursor_t cursor; // copy of stack state of the function
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int line; // line in code where function is defined
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char* file; // file name (DWARF Compilation Unit) where function is defined
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__pst_function* parent; // parent function in call trace (caller)
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Dwarf_Frame* frame; // function's stack frame
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pst_context* ctx; // context of unwinding
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bool allocated; // whether this object was allocated or not
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} pst_function;
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void pst_function_init(pst_function* fn, pst_context* _ctx, __pst_function* _parent);
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void pst_function_fini(pst_function* fn);
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pst_function* pst_function_new(pst_context* _ctx, __pst_function* _parent);
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#endif /* FRAMEWORK_DWARF_FUNCTION_H_ */
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