Lightemerald/windows-user-space-emulator
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Support exception hooks

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momo5502
2024-09-05 11:13:54 +02:00
parent 0c963439a9
commit 79607447e5
7 changed files with 299 additions and 59 deletions
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97
src/windows_emulator/main.cpp
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@@ -329,50 +329,25 @@ namespace
return context;
}
enum class gdb_registers
{
rax = 0,
rbx,
rcx,
rdx,
rsi,
rdi,
rbp,
rsp,
r8,
r9,
r10,
r11,
r12,
r13,
r14,
r15,
rip,
eflags,
end,
};
std::unordered_map<gdb_registers, x64_register> register_map{
{gdb_registers::rax, x64_register::rax},
{gdb_registers::rbx, x64_register::rbx},
{gdb_registers::rcx, x64_register::rcx},
{gdb_registers::rdx, x64_register::rdx},
{gdb_registers::rsi, x64_register::rsi},
{gdb_registers::rdi, x64_register::rdi},
{gdb_registers::rbp, x64_register::rbp},
{gdb_registers::rsp, x64_register::rsp},
{gdb_registers::r8, x64_register::r8},
{gdb_registers::r9, x64_register::r9},
{gdb_registers::r10, x64_register::r10},
{gdb_registers::r11, x64_register::r11},
{gdb_registers::r12, x64_register::r12},
{gdb_registers::r13, x64_register::r13},
{gdb_registers::r14, x64_register::r14},
{gdb_registers::r15, x64_register::r15},
{gdb_registers::rip, x64_register::rip},
{gdb_registers::eflags, x64_register::rflags},
std::vector gdb_registers{
x64_register::rax,
x64_register::rbx,
x64_register::rcx,
x64_register::rdx,
x64_register::rsi,
x64_register::rdi,
x64_register::rbp,
x64_register::rsp,
x64_register::r8,
x64_register::r9,
x64_register::r10,
x64_register::r11,
x64_register::r12,
x64_register::r13,
x64_register::r14,
x64_register::r15,
x64_register::rip,
x64_register::rflags,
};
memory_operation map_breakpoint_type(const breakpoint_type type)
@@ -488,13 +463,12 @@ namespace
try
{
const auto entry = register_map.find(static_cast<gdb_registers>(regno));
if (entry == register_map.end())
if (regno < 0 || regno >= gdb_registers.size())
{
return true;
}
this->emu_->read_register(entry->second, value, sizeof(*value));
this->emu_->read_register(gdb_registers[regno], value, sizeof(*value));
return true;
}
catch (...)
@@ -507,13 +481,12 @@ namespace
{
try
{
const auto entry = register_map.find(static_cast<gdb_registers>(regno));
if (entry == register_map.end())
if (regno < 0 || regno >= gdb_registers.size())
{
return false;
return true;
}
this->emu_->write_register(entry->second, &value, sizeof(value));
this->emu_->write_register(gdb_registers[regno], &value, sizeof(value));
return true;
}
catch (...)
@@ -634,6 +607,26 @@ namespace
return hook_continuation::skip_instruction;
});
emu->hook_instruction(x64_hookable_instructions::invalid, [&]
{
const auto ip = emu->read_instruction_pointer();
printf("Invalid instruction at: %llX\n", ip);
return hook_continuation::skip_instruction;
});
emu->hook_interrupt([&](int interrupt)
{
printf("Interrupt: %i\n", interrupt);
if (interrupt == 13)
{
const auto sp = emu->reg(x64_register::rsp);
const auto new_ip = emu->read_memory<uint64_t>(sp);
emu->reg(x64_register::rsp, sp + 8);
emu->reg(x64_register::rip, new_ip);
}
});
watch_object(*emu, context.teb);
watch_object(*emu, context.peb);
watch_object(*emu, context.process_params);
@@ -673,7 +666,7 @@ namespace
puts("Launching gdb stub...");
x64_gdb_stub_handler handler{*emu};
run_gdb_stub(handler, "i386:x86-64", static_cast<size_t>(gdb_registers::end), "0.0.0.0:28960");
run_gdb_stub(handler, "i386:x86-64", gdb_registers.size(), "0.0.0.0:28960");
}
else
{