fxos/fxos/disassembly.cpp
Lephenixnoir d5c5fa6aeb
implement the syscall pass, and symbol resolution
New features:
* The syscall pass now resolves syscalls for the input target, provided
  that an OS is mapped on the ROM region.
* Formalized the variations of print's arguments as a sequence (tree, to
  be precise) of /promotions/.
* Added a short notion of Symbol and SymbolTable, and a loader for them.
  Data files of type "symbol" are read as such and provide name to
  syscalls or arbitrary addresses.

Code changes:
* The disassembly operation of the command-line interface is now finally
  in its own file with more room.
* Encoded the tree structure of promotions as a sequence of (mainly
  tail-calling) inter-calling methods in the print pass.
2020-02-15 18:42:14 +01:00

63 lines
1.4 KiB
C++

#include "fxos-cli.h"
#include <fxos/disassembly.h>
#include <fxos/memory.h>
#include <fxos/target.h>
#include <fxos/util.h>
#include <fxos/log.h>
#include <fxos/os.h>
#include <fxos/disasm-passes/cfg.h>
#include <fxos/disasm-passes/pcrel.h>
#include <fxos/disasm-passes/syscall.h>
#include <fxos/disasm-passes/print.h>
using namespace FxOS;
using namespace FxOS::Log;
void disassembly(Library &library, Target &target, uint32_t ref,
std::vector<std::string> passes)
{
Disassembly disasm(target);
/* Observe the target only if it has an OS mapped */
std::unique_ptr<OS> os;
if(target.covers(MemoryRegion::ROM))
os = std::make_unique<OS>(target);
for(auto pass: passes)
{
auto start = timer_start();
log(LOG "Running pass %s...\\", pass);
if(pass == "cfg")
{
CfgPass p(disasm);
p.run(ref);
}
else if(pass == "pcrel")
{
PcrelPass p(disasm);
p.run(ref);
}
else if(pass == "syscall")
{
SyscallPass p(disasm, os.get());
p.run(ref);
}
else if(pass == "print")
{
PrintPass p(disasm, library.sym_tables());
p.promote_pcjump_loc = PrintPass::Promote;
p.promote_pcrel_loc = PrintPass::Promote;
p.promote_pcrel_value = PrintPass::Promote;
p.promote_syscall = PrintPass::Promote;
p.promote_syscallname = PrintPass::Append;
p.promote_symbol = PrintPass::Append;
p.run();
}
log(LOG "%s", timer_format(timer_end(start)));
}
}