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sortix--sortix/kernel/symbol.cpp
2014-03-01 14:37:39 +01:00

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1.7 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of Sortix.
Sortix 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.
Sortix 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
Sortix. If not, see <http://www.gnu.org/licenses/>.
symbol.cpp
Symbol table access.
*******************************************************************************/
#include <stddef.h>
#include <stdint.h>
#include <sortix/kernel/symbol.h>
namespace Sortix {
Symbol* kernel_symbol_table;
size_t kernel_symbol_table_length;
void SetKernelSymbolTable(Symbol* table, size_t length)
{
kernel_symbol_table = table;
kernel_symbol_table_length = length;
}
const Symbol* GetKernelSymbolTable(size_t* length)
{
if ( length )
*length = kernel_symbol_table_length;
return kernel_symbol_table;
}
static bool MatchesSymbol(const Symbol* symbol, uintptr_t address)
{
return symbol->address <= address &&
address <= symbol->address + symbol->size;
}
const Symbol* GetKernelSymbol(uintptr_t address)
{
for ( size_t i = 0; i < kernel_symbol_table_length; i++ )
{
const Symbol* symbol = kernel_symbol_table + i;
if ( MatchesSymbol(symbol, address) )
return symbol;
}
return NULL;
}
} // namespace Sortix