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#include "ExecSpace.h"
#include "ELFLoader.h"
#include <AK/TemporaryFile.h>
#include <AK/Types.h>
ExecSpace::ExecSpace()
{
initializeBuiltins();
}
ExecSpace::~ExecSpace()
{
}
#ifdef SERENITY
int puts(const char* str)
{
kprintf("%s\n", str);
return 0;
}
#endif
void ExecSpace::initializeBuiltins()
{
m_symbols.set("puts", { (char*)puts, 0 });
}
#ifdef SERENITY
bool ExecSpace::loadELF(ByteBuffer&& file)
#else
bool ExecSpace::loadELF(MappedFile&& file)
#endif
{
ELFLoader loader(*this, move(file));
if (!loader.load())
return false;
kprintf("[ExecSpace] ELF loaded, symbol map now:\n");
for (auto& s : m_symbols) {
kprintf("> %p: %s (%u)\n",
s.value.ptr,
s.key.characters(),
s.value.size);
}
return true;
}
static void disassemble(const char* data, size_t length)
{
if (!length)
return;
#ifdef SERENITY
for (unsigned i = 0; i < length; ++i) {
kprintf("%b ", (unsigned char)data[i]);
}
kprintf("\n");
#else
TemporaryFile temp;
if (!temp.isValid()) {
fprintf(stderr, "Unable to create temp file for disassembly.\n");
return;
}
fprintf(temp.stream(), "db ");
for (unsigned i = 0; i < length; ++i) {
fprintf(temp.stream(), "0x%02x, ", (unsigned char)data[i]);
}
fprintf(temp.stream(), "\n");
temp.sync();
char cmdbuf[128];
ksprintf(cmdbuf, "nasm -f bin -o /dev/stdout %s | ndisasm -b32 -", temp.fileName().characters());
system(cmdbuf);
#endif
}
char* ExecSpace::symbolPtr(const char* name)
{
if (auto it = m_symbols.find(name); it != m_symbols.end()) {
kprintf("[ELFLoader] symbolPtr(%s) dump:\n", name);
auto& symbol = (*it).value;
disassemble(symbol.ptr, symbol.size);
return symbol.ptr;
}
return nullptr;
}
char* ExecSpace::allocateArea(String&& name, unsigned size)
{
char* ptr = static_cast<char*>(kmalloc(size));
ASSERT(ptr);
m_areas.append(make<Area>(move(name), ptr, size));
return ptr;
}
void ExecSpace::addSymbol(String&& name, char* ptr, unsigned size)
{
m_symbols.set(move(name), { ptr, size });
}
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