8 void factor_vm::init_ffi()
10 hFactorDll = GetModuleHandle(FACTOR_DLL);
12 fatal_error("GetModuleHandle() failed", 0);
15 void factor_vm::ffi_dlopen(dll *dll)
17 dll->handle = LoadLibraryEx((WCHAR *)alien_offset(dll->path), NULL, 0);
20 void *factor_vm::ffi_dlsym(dll *dll, symbol_char *symbol)
22 return (void *)GetProcAddress(dll ? (HMODULE)dll->handle : hFactorDll, symbol);
25 void factor_vm::ffi_dlclose(dll *dll)
27 FreeLibrary((HMODULE)dll->handle);
31 BOOL factor_vm::windows_stat(vm_char *path)
33 BY_HANDLE_FILE_INFORMATION bhfi;
34 HANDLE h = CreateFileW(path,
39 FILE_FLAG_BACKUP_SEMANTICS,
42 if(h == INVALID_HANDLE_VALUE)
44 // FindFirstFile is the only call that can stat c:\pagefile.sys
48 if(INVALID_HANDLE_VALUE == (h = FindFirstFile(path, &st)))
53 BOOL ret = GetFileInformationByHandle(h, &bhfi);
58 void factor_vm::windows_image_path(vm_char *full_path, vm_char *temp_path, unsigned int length)
60 wcsncpy(temp_path, full_path, length - 1);
61 size_t full_path_len = wcslen(full_path);
62 if (full_path_len < length - 1)
63 wcsncat(temp_path, L".image", length - full_path_len - 1);
64 temp_path[length - 1] = 0;
67 /* You must free() this yourself. */
68 const vm_char *factor_vm::default_image_path()
70 vm_char full_path[MAX_UNICODE_PATH];
72 vm_char temp_path[MAX_UNICODE_PATH];
74 if(!GetModuleFileName(NULL, full_path, MAX_UNICODE_PATH))
75 fatal_error("GetModuleFileName() failed", 0);
77 if((ptr = wcsrchr(full_path, '.')))
80 wcsncpy(temp_path, full_path, MAX_UNICODE_PATH - 1);
81 size_t full_path_len = wcslen(full_path);
82 if (full_path_len < MAX_UNICODE_PATH - 1)
83 wcsncat(temp_path, L".image", MAX_UNICODE_PATH - full_path_len - 1);
84 temp_path[MAX_UNICODE_PATH - 1] = 0;
86 return safe_strdup(temp_path);
89 /* You must free() this yourself. */
90 const vm_char *factor_vm::vm_executable_path()
92 vm_char full_path[MAX_UNICODE_PATH];
93 if(!GetModuleFileName(NULL, full_path, MAX_UNICODE_PATH))
94 fatal_error("GetModuleFileName() failed", 0);
95 return safe_strdup(full_path);
98 void factor_vm::primitive_existsp()
100 vm_char *path = untag_check<byte_array>(ctx->pop())->data<vm_char>();
101 ctx->push(tag_boolean(windows_stat(path)));
104 segment::segment(cell size_, bool executable_p)
111 if((mem = (char *)VirtualAlloc(NULL, getpagesize() * 2 + size,
112 MEM_COMMIT, executable_p ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE)) == 0)
115 if (!VirtualProtect(mem, getpagesize(), PAGE_NOACCESS, &ignore))
116 fatal_error("Cannot allocate low guard page", (cell)mem);
118 if (!VirtualProtect(mem + size + getpagesize(),
119 getpagesize(), PAGE_NOACCESS, &ignore))
120 fatal_error("Cannot allocate high guard page", (cell)mem);
122 start = (cell)mem + getpagesize();
130 if(!VirtualFree((void*)(start - si.dwPageSize), 0, MEM_RELEASE))
131 fatal_error("Segment deallocation failed",0);
136 static long g_pagesize = 0;
139 SYSTEM_INFO system_info;
140 GetSystemInfo (&system_info);
141 g_pagesize = system_info.dwPageSize;
146 void factor_vm::move_file(const vm_char *path1, const vm_char *path2)
148 if(MoveFileEx((path1),(path2),MOVEFILE_REPLACE_EXISTING) == false)
149 general_error(ERROR_IO,tag_fixnum(GetLastError()),false_object);
152 void factor_vm::init_signals() {}
154 THREADHANDLE start_thread(void *(*start_routine)(void *), void *args)
156 return (void *)CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)start_routine, args, 0, 0);
161 static double scale_factor;
167 BOOL ret = QueryPerformanceCounter(&count);
169 fatal_error("QueryPerformanceCounter", 0);
171 if(scale_factor == 0.0)
173 LARGE_INTEGER frequency;
174 BOOL ret = QueryPerformanceFrequency(&frequency);
176 fatal_error("QueryPerformanceFrequency", 0);
177 scale_factor = (1000000000.0 / frequency.QuadPart);
183 /* On VirtualBox, QueryPerformanceCounter does not increment
184 the high part every time the low part overflows. Workaround. */
185 if(lo > count.LowPart)
190 return (u64)((((u64)hi << 32) | (u64)lo) * scale_factor);
193 void sleep_nanos(u64 nsec)
195 Sleep((DWORD)(nsec/1000000));
198 LONG factor_vm::exception_handler(PEXCEPTION_RECORD e, void *frame, PCONTEXT c, void *dispatch)
200 c->ESP = (cell)fix_callstack_top((stack_frame *)c->ESP);
201 ctx->callstack_top = (stack_frame *)c->ESP;
203 switch (e->ExceptionCode)
205 case EXCEPTION_ACCESS_VIOLATION:
206 signal_fault_addr = e->ExceptionInformation[1];
207 c->EIP = (cell)factor::memory_signal_handler_impl;
210 case STATUS_FLOAT_DENORMAL_OPERAND:
211 case STATUS_FLOAT_DIVIDE_BY_ZERO:
212 case STATUS_FLOAT_INEXACT_RESULT:
213 case STATUS_FLOAT_INVALID_OPERATION:
214 case STATUS_FLOAT_OVERFLOW:
215 case STATUS_FLOAT_STACK_CHECK:
216 case STATUS_FLOAT_UNDERFLOW:
217 case STATUS_FLOAT_MULTIPLE_FAULTS:
218 case STATUS_FLOAT_MULTIPLE_TRAPS:
220 signal_fpu_status = fpu_status(MXCSR(c));
222 signal_fpu_status = fpu_status(X87SW(c) | MXCSR(c));
224 /* This seems to have no effect */
227 MXCSR(c) &= 0xffffffc0;
228 c->EIP = (cell)factor::fp_signal_handler_impl;
231 signal_number = e->ExceptionCode;
232 c->EIP = (cell)factor::misc_signal_handler_impl;
239 VM_C_API LONG exception_handler(PEXCEPTION_RECORD e, void *frame, PCONTEXT c, void *dispatch)
241 return current_vm()->exception_handler(e,frame,c,dispatch);
244 void factor_vm::open_console() {}