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() {
34 std::cout << "Out of memory\n\n";
35 current_vm()->dump_generations();
39 /* Allocates memory */
40 void factor_vm::general_error(vm_error_type error, cell arg1_, cell arg2_) {
43 data_root<object> arg1(arg1_, this);
44 data_root<object> arg2(arg2_, this);
48 /* If we had an underflow or overflow, data or retain stack
49 pointers might be out of bounds, so fix them before allocating
53 /* If error was thrown during heap scan, we re-enable the GC */
56 /* If the error handler is set, we rewind any C stack frames and
57 pass the error to user-space. */
58 if (!current_gc && to_boolean(special_objects[ERROR_HANDLER_QUOT])) {
60 /* Doing a GC here triggers all kinds of funny errors */
61 primitive_compact_gc();
64 /* Now its safe to allocate and GC */
66 allot_array_4(special_objects[OBJ_ERROR], tag_fixnum(error),
67 arg1.value(), arg2.value());
68 ctx->push(error_object);
70 /* Clear the data roots since arg1 and arg2's destructors won't be
74 /* The unwind-native-frames subprimitive will clear faulting_p
75 if it was successfully reached. */
76 unwind_native_frames(special_objects[ERROR_HANDLER_QUOT],
78 } /* Error was thrown in early startup before error handler is set, so just
81 std::cout << "You have triggered a bug in Factor. Please report.\n";
82 std::cout << "error: " << error << std::endl;
83 std::cout << "arg 1: ";
84 print_obj(arg1.value());
85 std::cout << std::endl;
86 std::cout << "arg 2: ";
87 print_obj(arg2.value());
88 std::cout << std::endl;
94 void factor_vm::type_error(cell type, cell tagged) {
95 general_error(ERROR_TYPE, tag_fixnum(type), tagged);
98 void factor_vm::not_implemented_error() {
99 general_error(ERROR_NOT_IMPLEMENTED, false_object, false_object);
102 void factor_vm::verify_memory_protection_error(cell addr) {
103 /* Called from the OS-specific top halves of the signal handlers to
104 make sure it's safe to dispatch to memory_protection_error */
105 if (fatal_erroring_p)
106 fa_diddly_atal_error();
107 if (faulting_p && !code->safepoint_p(addr))
108 fatal_error("Double fault", addr);
110 fatal_error("Memory protection fault during low-level debugger", addr);
111 else if (atomic::load(¤t_gc_p))
112 fatal_error("Memory protection fault during gc", addr);
115 /* Allocates memory */
116 void factor_vm::memory_protection_error(cell pc, cell addr) {
117 if (code->safepoint_p(addr))
118 safepoint.handle_safepoint(this, pc);
119 else if (ctx->datastack_seg->underflow_p(addr))
120 general_error(ERROR_DATASTACK_UNDERFLOW, false_object, false_object);
121 else if (ctx->datastack_seg->overflow_p(addr))
122 general_error(ERROR_DATASTACK_OVERFLOW, false_object, false_object);
123 else if (ctx->retainstack_seg->underflow_p(addr))
124 general_error(ERROR_RETAINSTACK_UNDERFLOW, false_object, false_object);
125 else if (ctx->retainstack_seg->overflow_p(addr))
126 general_error(ERROR_RETAINSTACK_OVERFLOW, false_object, false_object);
127 else if (ctx->callstack_seg->underflow_p(addr))
128 general_error(ERROR_CALLSTACK_OVERFLOW, false_object, false_object);
129 else if (ctx->callstack_seg->overflow_p(addr))
130 general_error(ERROR_CALLSTACK_UNDERFLOW, false_object, false_object);
132 general_error(ERROR_MEMORY, from_unsigned_cell(addr), false_object);
135 /* Allocates memory */
136 void factor_vm::signal_error(cell signal) {
137 general_error(ERROR_SIGNAL, from_unsigned_cell(signal), false_object);
140 void factor_vm::divide_by_zero_error() {
141 general_error(ERROR_DIVIDE_BY_ZERO, false_object, false_object);
144 void factor_vm::fp_trap_error(unsigned int fpu_status) {
145 general_error(ERROR_FP_TRAP, tag_fixnum(fpu_status), false_object);
148 /* For testing purposes */
149 void factor_vm::primitive_unimplemented() { not_implemented_error(); }
151 void factor_vm::memory_signal_handler_impl() {
152 memory_protection_error(signal_fault_pc, signal_fault_addr);
153 if (!signal_resumable) {
154 /* In theory we should only get here if the callstack overflowed during a
156 general_error(ERROR_CALLSTACK_OVERFLOW, false_object, false_object);
160 void memory_signal_handler_impl() {
161 current_vm()->memory_signal_handler_impl();
164 void factor_vm::synchronous_signal_handler_impl() {
165 signal_error(signal_number);
168 void synchronous_signal_handler_impl() {
169 current_vm()->synchronous_signal_handler_impl();
172 void factor_vm::fp_signal_handler_impl() {
173 /* Clear pending exceptions to avoid getting stuck in a loop */
174 set_fpu_state(get_fpu_state());
176 fp_trap_error(signal_fpu_status);
179 void fp_signal_handler_impl() { current_vm()->fp_signal_handler_impl(); }