#include "master.hpp"
-namespace factor
-{
+namespace factor {
bool factor_vm::fatal_erroring_p;
-static inline void fa_diddly_atal_error()
-{
- printf("fatal_error in fatal_error!\n");
- breakpoint();
- exit(86);
+static inline void fa_diddly_atal_error() {
+ printf("fatal_error in fatal_error!\n");
+ breakpoint();
+ ::_exit(86);
}
-void fatal_error(const char *msg, cell tagged)
-{
- if (factor_vm::fatal_erroring_p)
- fa_diddly_atal_error();
+void fatal_error(const char* msg, cell tagged) {
+ if (factor_vm::fatal_erroring_p)
+ fa_diddly_atal_error();
- factor_vm::fatal_erroring_p = true;
+ factor_vm::fatal_erroring_p = true;
- std::cout << "fatal_error: " << msg;
- std::cout << ": " << (void*)tagged;
- std::cout << std::endl;
- abort();
+ std::cout << "fatal_error: " << msg;
+ std::cout << ": " << (void*)tagged;
+ std::cout << std::endl << std::endl;
+ factor_vm* vm = current_vm();
+ if (vm->data) {
+ vm->dump_memory_layout(std::cout);
+ }
+ abort();
}
-void critical_error(const char *msg, cell tagged)
-{
- std::cout << "You have triggered a bug in Factor. Please report.\n";
- std::cout << "critical_error: " << msg;
- std::cout << ": " << std::hex << tagged << std::dec;
- std::cout << std::endl;
- current_vm()->factorbug();
+void critical_error(const char* msg, cell tagged) {
+ std::cout << "You have triggered a bug in Factor. Please report.\n";
+ std::cout << "critical_error: " << msg;
+ std::cout << ": " << std::hex << tagged << std::dec;
+ std::cout << std::endl;
+ current_vm()->factorbug();
}
-void out_of_memory()
-{
- std::cout << "Out of memory\n\n";
- current_vm()->dump_generations();
- exit(1);
-}
+// Allocates memory
+void factor_vm::general_error(vm_error_type error, cell arg1_, cell arg2_) {
-void factor_vm::general_error(vm_error_type error, cell arg1, cell arg2)
-{
- faulting_p = true;
+ data_root<object> arg1(arg1_, this);
+ data_root<object> arg2(arg2_, this);
- /* Reset local roots before allocating anything */
- data_roots.clear();
- bignum_roots.clear();
- code_roots.clear();
+ faulting_p = true;
- /* If we had an underflow or overflow, data or retain stack
- pointers might be out of bounds, so fix them before allocating
- anything */
- ctx->fix_stacks();
+ // If we had an underflow or overflow, data or retain stack
+ // pointers might be out of bounds, so fix them before allocating
+ // anything
+ ctx->fix_stacks();
- /* If error was thrown during heap scan, we re-enable the GC */
- gc_off = false;
+ // If error was thrown during heap scan, we re-enable the GC
+ gc_off = false;
- /* If the error handler is set, we rewind any C stack frames and
- pass the error to user-space. */
- if(!current_gc && to_boolean(special_objects[ERROR_HANDLER_QUOT]))
- {
+ // If the error handler is set, we rewind any C stack frames and
+ // pass the error to user-space.
+ if (!current_gc && to_boolean(special_objects[ERROR_HANDLER_QUOT])) {
#ifdef FACTOR_DEBUG
- /* Doing a GC here triggers all kinds of funny errors */
- primitive_compact_gc();
+ // Doing a GC here triggers all kinds of funny errors
+ primitive_compact_gc();
#endif
- /* Now its safe to allocate and GC */
- cell error_object = allot_array_4(special_objects[OBJ_ERROR],
- tag_fixnum(error),arg1,arg2);
-
- ctx->push(error_object);
-
- /* The unwind-native-frames subprimitive will clear faulting_p
- if it was successfully reached. */
- unwind_native_frames(special_objects[ERROR_HANDLER_QUOT],
- ctx->callstack_top);
- }
- /* Error was thrown in early startup before error handler is set, just
- crash. */
- else
- {
- std::cout << "You have triggered a bug in Factor. Please report.\n";
- std::cout << "error: " << error << std::endl;
- std::cout << "arg 1: "; print_obj(arg1); std::cout << std::endl;
- std::cout << "arg 2: "; print_obj(arg2); std::cout << std::endl;
- factorbug();
- abort();
- }
-}
-
-void factor_vm::type_error(cell type, cell tagged)
-{
- general_error(ERROR_TYPE,tag_fixnum(type),tagged);
-}
-
-void factor_vm::not_implemented_error()
-{
- general_error(ERROR_NOT_IMPLEMENTED,false_object,false_object);
-}
-
-void factor_vm::verify_memory_protection_error(cell addr)
-{
- /* Called from the OS-specific top halves of the signal handlers to
- make sure it's safe to dispatch to memory_protection_error */
- if(fatal_erroring_p)
- fa_diddly_atal_error();
- if(faulting_p && !code->safepoint_p(addr))
- fatal_error("Double fault", addr);
- else if(fep_p)
- fatal_error("Memory protection fault during low-level debugger", addr);
- else if(atomic::load(¤t_gc_p))
- fatal_error("Memory protection fault during gc", addr);
-}
-
-void factor_vm::memory_protection_error(cell addr)
-{
- if(code->safepoint_p(addr))
- safepoint.handle_safepoint(this);
- else if(ctx->datastack_seg->underflow_p(addr))
- general_error(ERROR_DATASTACK_UNDERFLOW,false_object,false_object);
- else if(ctx->datastack_seg->overflow_p(addr))
- general_error(ERROR_DATASTACK_OVERFLOW,false_object,false_object);
- else if(ctx->retainstack_seg->underflow_p(addr))
- general_error(ERROR_RETAINSTACK_UNDERFLOW,false_object,false_object);
- else if(ctx->retainstack_seg->overflow_p(addr))
- general_error(ERROR_RETAINSTACK_OVERFLOW,false_object,false_object);
- else if(ctx->callstack_seg->underflow_p(addr))
- general_error(ERROR_CALLSTACK_OVERFLOW,false_object,false_object);
- else if(ctx->callstack_seg->overflow_p(addr))
- general_error(ERROR_CALLSTACK_UNDERFLOW,false_object,false_object);
- else
- general_error(ERROR_MEMORY,from_unsigned_cell(addr),false_object);
-}
-
-void factor_vm::signal_error(cell signal)
-{
- general_error(ERROR_SIGNAL,from_unsigned_cell(signal),false_object);
-}
-
-void factor_vm::divide_by_zero_error()
-{
- general_error(ERROR_DIVIDE_BY_ZERO,false_object,false_object);
-}
-
-void factor_vm::fp_trap_error(unsigned int fpu_status)
-{
- general_error(ERROR_FP_TRAP,tag_fixnum(fpu_status),false_object);
-}
-
-/* For testing purposes */
-void factor_vm::primitive_unimplemented()
-{
- not_implemented_error();
-}
-
-void factor_vm::memory_signal_handler_impl()
-{
- memory_protection_error(signal_fault_addr);
- if (!signal_resumable)
- {
- /* In theory we should only get here if the callstack overflowed during a
- safepoint */
- general_error(ERROR_CALLSTACK_OVERFLOW,false_object,false_object);
- }
-}
-
-void memory_signal_handler_impl()
-{
- current_vm()->memory_signal_handler_impl();
-}
-
-void factor_vm::synchronous_signal_handler_impl()
-{
- signal_error(signal_number);
-}
-
-void synchronous_signal_handler_impl()
-{
- current_vm()->synchronous_signal_handler_impl();
-}
-
-void factor_vm::fp_signal_handler_impl()
-{
- /* Clear pending exceptions to avoid getting stuck in a loop */
- set_fpu_state(get_fpu_state());
-
- fp_trap_error(signal_fpu_status);
-}
-
-void fp_signal_handler_impl()
-{
- current_vm()->fp_signal_handler_impl();
+ // Now its safe to allocate and GC
+ cell error_object =
+ allot_array_4(tag_fixnum(KERNEL_ERROR), tag_fixnum(error),
+ arg1.value(), arg2.value());
+ ctx->push(error_object);
+
+ // Clear the data roots since arg1 and arg2's destructors won't be
+ // called.
+ data_roots.clear();
+
+ // The unwind-native-frames subprimitive will clear faulting_p
+ // if it was successfully reached.
+ unwind_native_frames(special_objects[ERROR_HANDLER_QUOT],
+ ctx->callstack_top);
+ } // Error was thrown in early startup before error handler is set, so just
+ // crash.
+ else {
+ std::cout << "You have triggered a bug in Factor. Please report.\n";
+ std::cout << "error: " << error << std::endl;
+ std::cout << "arg 1: ";
+ print_obj(std::cout, arg1.value());
+ std::cout << std::endl;
+ std::cout << "arg 2: ";
+ print_obj(std::cout, arg2.value());
+ std::cout << std::endl;
+ factorbug();
+ abort();
+ }
+}
+
+// Allocates memory
+void factor_vm::type_error(cell type, cell tagged) {
+ general_error(ERROR_TYPE, tag_fixnum(type), tagged);
+}
+
+void factor_vm::set_memory_protection_error(cell fault_addr, cell fault_pc) {
+ // Called from the OS-specific top halves of the signal handlers to
+ // make sure it's safe to dispatch to memory_signal_handler_impl.
+ if (fatal_erroring_p)
+ fa_diddly_atal_error();
+ if (faulting_p && !code->safepoint_p(fault_addr))
+ fatal_error("Double fault", fault_addr);
+ else if (fep_p)
+ fatal_error("Memory protection fault during low-level debugger", fault_addr);
+ else if (atomic::load(¤t_gc_p))
+ fatal_error("Memory protection fault during gc", fault_addr);
+ signal_fault_addr = fault_addr;
+ signal_fault_pc = fault_pc;
+}
+
+// Allocates memory
+void factor_vm::divide_by_zero_error() {
+ general_error(ERROR_DIVIDE_BY_ZERO, false_object, false_object);
+}
+
+// Allocates memory
+void memory_signal_handler_impl() {
+ factor_vm* vm = current_vm();
+ if (vm->code->safepoint_p(vm->signal_fault_addr)) {
+ vm->handle_safepoint(vm->signal_fault_pc);
+ }
+ else {
+ vm_error_type type = vm->ctx->address_to_error(vm->signal_fault_addr);
+ cell number = vm->from_unsigned_cell(vm->signal_fault_addr);
+ vm->general_error(type, number, false_object);
+ }
+ if (!vm->signal_resumable) {
+ // In theory we should only get here if the callstack overflowed during a
+ // safepoint
+ vm->general_error(ERROR_CALLSTACK_OVERFLOW, false_object, false_object);
+ }
+}
+
+// Allocates memory
+void synchronous_signal_handler_impl() {
+ factor_vm* vm = current_vm();
+ vm->general_error(ERROR_SIGNAL,
+ vm->from_unsigned_cell(vm->signal_number),
+ false_object);
+}
+
+// Allocates memory
+void fp_signal_handler_impl() {
+ factor_vm* vm = current_vm();
+
+ // Clear pending exceptions to avoid getting stuck in a loop
+ vm->set_fpu_state(vm->get_fpu_state());
+
+ vm->general_error(ERROR_FP_TRAP,
+ tag_fixnum(vm->signal_fpu_status),
+ false_object);
}
}
projects / factor.git / blobdiff