82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
/*
|
|
Copyright 2017 Wolfgang Thaller.
|
|
|
|
This file is part of Retro68.
|
|
|
|
Retro68 is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Retro68 is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Retro68. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "Symtab.h"
|
|
|
|
#include <assert.h>
|
|
#include <utility>
|
|
|
|
#include "Symbol.h"
|
|
|
|
using std::make_pair;
|
|
using std::string;
|
|
|
|
Symtab::Symtab(Object& theObject, Elf_Scn *elfsec)
|
|
: elfsec(elfsec)
|
|
{
|
|
data = elf_getdata(elfsec, NULL);
|
|
|
|
GElf_Shdr shdr;
|
|
gelf_getshdr(elfsec, &shdr);
|
|
|
|
int count = shdr.sh_size / shdr.sh_entsize;
|
|
symbols.reserve(count);
|
|
|
|
for(int i = 0; i < count; i++)
|
|
{
|
|
GElf_Sym sym;
|
|
auto res = gelf_getsym(data, i, &sym);
|
|
assert(res != 0);
|
|
symbols.emplace_back(theObject, sym);
|
|
|
|
if(sym.st_shndx != SHN_UNDEF && sym.st_shndx < SHN_LORESERVE)
|
|
symbolsByAddress[make_pair((int)sym.st_shndx,sym.st_value)] = i;
|
|
if(sym.st_name)
|
|
symbolsByName[symbols.back().name] = i;
|
|
}
|
|
}
|
|
|
|
Symtab::~Symtab()
|
|
{
|
|
|
|
}
|
|
|
|
Symbol &Symtab::GetSym(int idx)
|
|
{
|
|
return symbols[idx];
|
|
}
|
|
|
|
int Symtab::FindSym(int secidx, uint32_t addr)
|
|
{
|
|
auto p = symbolsByAddress.find(make_pair(secidx, addr));
|
|
if(p != symbolsByAddress.end())
|
|
return p->second;
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
int Symtab::FindSym(string name)
|
|
{
|
|
auto p = symbolsByName.find(name);
|
|
if(p != symbolsByName.end())
|
|
return p->second;
|
|
else
|
|
return -1;
|
|
}
|