Lightemerald/windows-user-space-emulator
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Small callback optimization and unification

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This commit is contained in:
momo5502
2025-02-14 08:58:27 +01:00
parent 6b4e86073e
commit 3218e26306
11 changed files with 62 additions and 69 deletions
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21
src/windows-emulator/syscall_dispatcher.cpp
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@@ -71,6 +71,8 @@ void syscall_dispatcher::dispatch(windows_emulator& win_emu)
try
{
const auto* mod = win_emu.mod_manager.find_by_address(address);
const auto entry = this->handlers_.find(syscall_id);
if (entry == this->handlers_.end())
{
@@ -80,6 +82,13 @@ void syscall_dispatcher::dispatch(windows_emulator& win_emu)
return;
}
const std::string_view mod_name = mod ? mod->name : std::string_view{};
const auto res = win_emu.callbacks.on_syscall(syscall_id, address, mod_name, entry->second.name);
if (res == instruction_hook_continuation::skip_instruction)
{
return;
}
if (!entry->second.handler)
{
win_emu.log.error("Unimplemented syscall: %s - 0x%X\n", entry->second.name.c_str(), syscall_id);
@@ -88,12 +97,8 @@ void syscall_dispatcher::dispatch(windows_emulator& win_emu)
return;
}
const auto* mod = win_emu.mod_manager.find_by_address(address);
if (mod != win_emu.mod_manager.ntdll && mod != win_emu.mod_manager.win32u)
{
win_emu.callbacks.inline_syscall(syscall_id, address, mod ? mod->name.c_str() : "<N/A>",
entry->second.name);
win_emu.log.print(color::blue, "Executing inline syscall: %s (0x%X) at 0x%" PRIx64 " (%s)\n",
entry->second.name.c_str(), syscall_id, address, mod ? mod->name.c_str() : "<N/A>");
}
@@ -106,20 +111,16 @@ void syscall_dispatcher::dispatch(windows_emulator& win_emu)
uint64_t return_address{};
c.emu.try_read_memory(rsp, &return_address, sizeof(return_address));
const auto* mod_name = win_emu.mod_manager.find_name(return_address);
const auto* caller_mod_name = win_emu.mod_manager.find_name(return_address);
win_emu.log.print(color::dark_gray,
"Executing syscall: %s (0x%X) at 0x%" PRIx64 " via 0x%" PRIx64 " (%s)\n",
entry->second.name.c_str(), syscall_id, address, return_address, mod_name);
entry->second.name.c_str(), syscall_id, address, return_address, caller_mod_name);
}
else
{
const auto* previous_mod = win_emu.mod_manager.find_by_address(context.previous_ip);
win_emu.callbacks.outofline_syscall(syscall_id, address, mod ? mod->name.c_str() : "<N/A>",
entry->second.name, context.previous_ip,
previous_mod ? previous_mod->name.c_str() : "<N/A>");
win_emu.log.print(color::blue,
"Crafted out-of-line syscall: %s (0x%X) at 0x%" PRIx64 " (%s) via 0x%" PRIx64
" (%s)\n",