5 bool factor_vm::fatal_erroring_p;
7 static inline void fa_diddly_atal_error() {
8 printf("fatal_error in fatal_error!\n");
13 void fatal_error(const char* msg, cell tagged) {
14 if (factor_vm::fatal_erroring_p)
15 fa_diddly_atal_error();
17 factor_vm::fatal_erroring_p = true;
19 std::cout << "fatal_error: " << msg;
20 std::cout << ": " << (void*)tagged;
21 std::cout << std::endl;
25 void critical_error(const char* msg, cell tagged) {
26 std::cout << "You have triggered a bug in Factor. Please report.\n";
27 std::cout << "critical_error: " << msg;
28 std::cout << ": " << std::hex << tagged << std::dec;
29 std::cout << std::endl;
30 current_vm()->factorbug();
33 void out_of_memory(const char *msg) {
34 std::cout << "Out of memory: " << msg << "\n\n";
35 current_vm()->dump_generations(std::cout);
39 /* Allocates memory */
40 void factor_vm::general_error(vm_error_type error, cell arg1_, cell arg2_) {
42 data_root<object> arg1(arg1_, this);
43 data_root<object> arg2(arg2_, this);
47 /* If we had an underflow or overflow, data or retain stack
48 pointers might be out of bounds, so fix them before allocating
52 /* If error was thrown during heap scan, we re-enable the GC */
55 /* If the error handler is set, we rewind any C stack frames and
56 pass the error to user-space. */
57 if (!current_gc && to_boolean(special_objects[ERROR_HANDLER_QUOT])) {
59 /* Doing a GC here triggers all kinds of funny errors */
60 primitive_compact_gc();
63 /* Now its safe to allocate and GC */
65 allot_array_4(special_objects[OBJ_ERROR], tag_fixnum(error),
66 arg1.value(), arg2.value());
67 ctx->push(error_object);
69 /* Clear the data roots since arg1 and arg2's destructors won't be
73 /* The unwind-native-frames subprimitive will clear faulting_p
74 if it was successfully reached. */
75 unwind_native_frames(special_objects[ERROR_HANDLER_QUOT],
77 } /* Error was thrown in early startup before error handler is set, so just
80 std::cout << "You have triggered a bug in Factor. Please report.\n";
81 std::cout << "error: " << error << std::endl;
82 std::cout << "arg 1: ";
83 print_obj(std::cout, arg1.value());
84 std::cout << std::endl;
85 std::cout << "arg 2: ";
86 print_obj(std::cout, arg2.value());
87 std::cout << std::endl;
93 /* Allocates memory */
94 void factor_vm::type_error(cell type, cell tagged) {
95 general_error(ERROR_TYPE, tag_fixnum(type), tagged);
98 /* Allocates memory */
99 void factor_vm::not_implemented_error() {
100 general_error(ERROR_NOT_IMPLEMENTED, false_object, false_object);
103 void factor_vm::verify_memory_protection_error(cell addr) {
104 /* Called from the OS-specific top halves of the signal handlers to
105 make sure it's safe to dispatch to memory_protection_error */
106 if (fatal_erroring_p)
107 fa_diddly_atal_error();
108 if (faulting_p && !code->safepoint_p(addr))
109 fatal_error("Double fault", addr);
111 fatal_error("Memory protection fault during low-level debugger", addr);
112 else if (atomic::load(¤t_gc_p))
113 fatal_error("Memory protection fault during gc", addr);
116 /* Allocates memory */
117 void factor_vm::memory_protection_error(cell pc, cell addr) {
118 if (code->safepoint_p(addr))
119 safepoint.handle_safepoint(this, pc);
120 else if (ctx->datastack_seg->underflow_p(addr))
121 general_error(ERROR_DATASTACK_UNDERFLOW, false_object, false_object);
122 else if (ctx->datastack_seg->overflow_p(addr))
123 general_error(ERROR_DATASTACK_OVERFLOW, false_object, false_object);
124 else if (ctx->retainstack_seg->underflow_p(addr))
125 general_error(ERROR_RETAINSTACK_UNDERFLOW, false_object, false_object);
126 else if (ctx->retainstack_seg->overflow_p(addr))
127 general_error(ERROR_RETAINSTACK_OVERFLOW, false_object, false_object);
128 else if (ctx->callstack_seg->underflow_p(addr))
129 general_error(ERROR_CALLSTACK_OVERFLOW, false_object, false_object);
130 else if (ctx->callstack_seg->overflow_p(addr))
131 general_error(ERROR_CALLSTACK_UNDERFLOW, false_object, false_object);
133 general_error(ERROR_MEMORY, from_unsigned_cell(addr), false_object);
136 /* Allocates memory */
137 void factor_vm::divide_by_zero_error() {
138 general_error(ERROR_DIVIDE_BY_ZERO, false_object, false_object);
141 /* For testing purposes */
142 /* Allocates memory */
143 void factor_vm::primitive_unimplemented() { not_implemented_error(); }
145 /* Allocates memory */
146 void factor_vm::memory_signal_handler_impl() {
147 memory_protection_error(signal_fault_pc, signal_fault_addr);
148 if (!signal_resumable) {
149 /* In theory we should only get here if the callstack overflowed during a
151 general_error(ERROR_CALLSTACK_OVERFLOW, false_object, false_object);
155 /* Allocates memory */
156 void memory_signal_handler_impl() {
157 current_vm()->memory_signal_handler_impl();
160 /* Allocates memory */
161 void factor_vm::synchronous_signal_handler_impl() {
162 general_error(ERROR_SIGNAL, from_unsigned_cell(signal_number), false_object);
165 /* Allocates memory */
166 void synchronous_signal_handler_impl() {
167 current_vm()->synchronous_signal_handler_impl();
170 /* Allocates memory (fp_trap_error())*/
171 void factor_vm::fp_signal_handler_impl() {
172 /* Clear pending exceptions to avoid getting stuck in a loop */
173 set_fpu_state(get_fpu_state());
175 general_error(ERROR_FP_TRAP, tag_fixnum(signal_fpu_status), false_object);
178 /* Allocates memory */
179 void fp_signal_handler_impl() { current_vm()->fp_signal_handler_impl(); }