64 lines
2.5 KiB
C
64 lines
2.5 KiB
C
/*
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* dwarf_call_site.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_CALL_SITE_H_
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#define FRAMEWORK_DWARF_CALL_SITE_H_
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#include <inttypes.h>
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#include <elfutils/libdw.h>
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#include "list_head.h"
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#include "context.h"
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#include "dwarf_expression.h"
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// -----------------------------------------------------------------------------------
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// DW_TAG_call_site_parameter
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// -----------------------------------------------------------------------------------
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typedef struct pst_call_site_param {
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list_node node; // uplink. !!! must be first !!!
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// methods
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void (*set_location) (pst_call_site_param* param, Dwarf_Op* expr, size_t exprlen);
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// fields
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Dwarf_Die* param; // reference to parameter DIE in callee (DW_AT_call_parameter)
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char* name; // name of parameter if present (DW_AT_name)
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pst_dwarf_expr location; // DWARF stack containing location expression
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uint64_t value; // parameter's value
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bool allocated; // whether this object was allocated or not
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} pst_call_site_param;
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void pst_call_site_param_init(pst_call_site_param* param);
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pst_call_site_param* pst_call_site_param_new();
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void pst_call_site_param_fini(pst_call_site_param* param);
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// -----------------------------------------------------------------------------------
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// DW_TAG_call_site
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// -----------------------------------------------------------------------------------
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typedef struct pst_call_site {
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list_node node; // uplink. !!! must be first !!!
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// methods
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pst_call_site_param* (*add_param) (pst_call_site* site);
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void (*del_param) (pst_call_site* site, pst_call_site_param* p);
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pst_call_site_param* (*next_param) (pst_call_site* site, pst_call_site_param* p);
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pst_call_site_param* (*find_param) (pst_call_site* site, pst_dwarf_expr& expr);
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bool (*handle_dwarf) (pst_call_site* site, Dwarf_Die* die);
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// fields
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uint64_t target; // pointer to callee function's (it's Low PC + base address)
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char* origin; // name of callee function
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Dwarf_Die* die; // DIE of function for which this call site has parameters
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list_head params; // list of parameters and their values
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pst_context* ctx; // execution context
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bool allocated; // whether this object was allocated or not
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} pst_call_site;
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#endif /* FRAMEWORK_DWARF_CALL_SITE_H_ */
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