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Add partial NtContinueEx support

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momo5502
2025-04-13 10:04:42 +02:00
parent f58dec38a2
commit c0252a5f71
3 changed files with 47 additions and 8 deletions
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19
src/common/platform/threading.hpp
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@@ -90,4 +90,23 @@ typedef struct _THREAD_TEB_INFORMATION
ULONG BytesToRead; // Number of bytes to read.
} THREAD_TEB_INFORMATION, *PTHREAD_TEB_INFORMATION;
typedef enum _KCONTINUE_TYPE
{
KCONTINUE_UNWIND,
KCONTINUE_RESUME,
KCONTINUE_LONGJUMP,
KCONTINUE_SET,
KCONTINUE_LAST,
} KCONTINUE_TYPE;
typedef struct _KCONTINUE_ARGUMENT
{
KCONTINUE_TYPE ContinueType;
ULONG ContinueFlags;
ULONGLONG Reserved[2];
} KCONTINUE_ARGUMENT, *PKCONTINUE_ARGUMENT;
#define KCONTINUE_FLAG_TEST_ALERT 0x00000001
#define KCONTINUE_FLAG_DELIVER_APC 0x00000002
// NOLINTEND(modernize-use-using)

5
src/windows-emulator/syscalls.cpp
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@@ -270,7 +270,9 @@ namespace syscalls
NTSTATUS handle_NtResumeThread(const syscall_context& c, handle thread_handle,
emulator_object<ULONG> previous_suspend_count);
NTSTATUS handle_NtContinue(const syscall_context& c, emulator_object<CONTEXT64> thread_context,
BOOLEAN /*raise_alert*/);
BOOLEAN raise_alert);
NTSTATUS handle_NtContinueEx(const syscall_context& c, emulator_object<CONTEXT64> thread_context,
uint64_t continue_argument);
NTSTATUS handle_NtGetNextThread(const syscall_context& c, handle process_handle, handle thread_handle,
ACCESS_MASK /*desired_access*/, ULONG /*handle_attributes*/, ULONG flags,
emulator_object<handle> new_thread_handle);
@@ -664,6 +666,7 @@ void syscall_dispatcher::add_handlers(std::map<std::string, syscall_handler>& ha
add_handler(NtQueryLicenseValue);
add_handler(NtTestAlert);
add_handler(NtContinue);
add_handler(NtContinueEx);
add_handler(NtTerminateProcess);
add_handler(NtWriteFile);
add_handler(NtRaiseHardError);

31
src/windows-emulator/syscalls/thread.cpp
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@@ -361,22 +361,39 @@ namespace syscalls
return STATUS_SUCCESS;
}
NTSTATUS handle_NtContinue(const syscall_context& c, const emulator_object<CONTEXT64> thread_context,
const BOOLEAN raise_alert)
NTSTATUS handle_NtContinueEx(const syscall_context& c, const emulator_object<CONTEXT64> thread_context,
const uint64_t continue_argument)
{
c.write_status = false;
if (raise_alert)
{
c.win_emu.current_thread().apc_alertable = false;
}
const auto context = thread_context.read();
cpu_context::restore(c.emu, context);
KCONTINUE_ARGUMENT argument{};
if (continue_argument <= 0xFF)
{
argument.ContinueFlags = KCONTINUE_FLAG_TEST_ALERT;
}
else
{
argument = c.emu.read_memory<KCONTINUE_ARGUMENT>(continue_argument);
}
if (argument.ContinueFlags & KCONTINUE_FLAG_TEST_ALERT)
{
c.win_emu.yield_thread(true);
}
return STATUS_SUCCESS;
}
NTSTATUS handle_NtContinue(const syscall_context& c, const emulator_object<CONTEXT64> thread_context,
const BOOLEAN raise_alert)
{
return handle_NtContinueEx(c, thread_context, raise_alert ? 1 : 0);
}
NTSTATUS handle_NtGetNextThread(const syscall_context& c, const handle process_handle, const handle thread_handle,
const ACCESS_MASK /*desired_access*/, const ULONG /*handle_attributes*/,
const ULONG flags, const emulator_object<handle> new_thread_handle)