CPPUtil.cpp File Reference

#include "SVF-FE/CPPUtil.h"
#include "Util/SVFUtil.h"
#include "SVF-FE/LLVMUtil.h"
#include <cxxabi.h>

Go to the source code of this file.

Functions
static bool	isOperOverload (const string name)
static string	getBeforeParenthesis (const string &name)
static void	handleThunkFunction (cppUtil::DemangledName &dname)

Variables
const string	vtblLabelBeforeDemangle = "_ZTV"
const string	vtblLabelAfterDemangle = "vtable for "
const string	vfunPreLabel = "_Z"
const string	NVThunkFunLabel = "non-virtual thunk to "
const string	VThunkFuncLabel = "virtual thunk to "
const string	clsName = "class."
const string	structName = "struct."

Function Documentation

getBeforeParenthesis()

static string getBeforeParenthesis ( const string &  name )

static

Definition at line 86 of file CPPUtil.cpp.

{
    size_t lastRightParen = name.rfind(")");
    assert(lastRightParen > 0);

    s32_t paren_num = 1, pos;
    for (pos = lastRightParen - 1; pos >= 0; pos--)
    {
        if (name[pos] == ')')
            paren_num++;
        if (name[pos] == '(')
            paren_num--;
        if (paren_num == 0)
            break;
    }
    return name.substr(0, pos);
}

handleThunkFunction()

static void handleThunkFunction ( cppUtil::DemangledName &  dname )

static

Definition at line 135 of file CPPUtil.cpp.

                                                             {
    // when handling multi-inheritance,
    // the compiler may generate thunk functions
    // to perform `this` pointer adjustment
    // they are indicated with `virtual thunk to `
    // and `nun-virtual thunk to`.
    // if the classname starts with part of a
    // demangled name starts with
    // these prefixes, we need to remove the prefix
    // to get the real class name

    static vector<string> thunkPrefixes = {VThunkFuncLabel, NVThunkFunLabel};
    for (unsigned i = 0; i < thunkPrefixes.size(); i++) {
        auto prefix = thunkPrefixes[i];
        if (dname.className.size() > prefix.size() &&
            dname.className.compare(0, prefix.size(), prefix) == 0)
        {
            dname.className = dname.className.substr(prefix.size());
            dname.isThunkFunc = true;
            return;

        }
    }
}

isOperOverload()

static bool isOperOverload ( const string  name )

static

Definition at line 56 of file CPPUtil.cpp.

{
    s32_t leftnum = 0, rightnum = 0;
    string subname = name;
    size_t leftpos, rightpos;
    leftpos = subname.find("<");
    while (leftpos != string::npos)
    {
        subname = subname.substr(leftpos+1);
        leftpos = subname.find("<");
        leftnum++;
    }
    subname = name;
    rightpos = subname.find(">");
    while (rightpos != string::npos)
    {
        subname = subname.substr(rightpos+1);
        rightpos = subname.find(">");
        rightnum++;
    }
    if (leftnum != rightnum)
    {
        return true;
    }
    else
    {
        return false;
    }
}

Variable Documentation

clsName

const string clsName = "class."

Definition at line 53 of file CPPUtil.cpp.

NVThunkFunLabel

const string NVThunkFunLabel = "non-virtual thunk to "

Definition at line 50 of file CPPUtil.cpp.

structName

const string structName = "struct."

Definition at line 54 of file CPPUtil.cpp.

vfunPreLabel

const string vfunPreLabel = "_Z"

Definition at line 47 of file CPPUtil.cpp.

vtblLabelAfterDemangle

const string vtblLabelAfterDemangle = "vtable for "

Definition at line 44 of file CPPUtil.cpp.

vtblLabelBeforeDemangle

const string vtblLabelBeforeDemangle = "_ZTV"

Definition at line 41 of file CPPUtil.cpp.

VThunkFuncLabel

const string VThunkFuncLabel = "virtual thunk to "

Definition at line 51 of file CPPUtil.cpp.