void OutNvramStack(void)
{
InitPushCRC();
uint i;
for (i=0; i<4000; i++) PushChar(0);
InitPushCRC();
PUSH_VALUE(NVRAM_BEGIN)
PUSH_VALUE(NVRAM_END)
PUSH_VALUE(dwNVRAM_BYTES)
PushChar(0x0D); PushChar(0x0A);
PushLongAsString((ulong)100*(NVRAM_END-NVRAM_BEGIN)/(dwNVRAM_BYTES-NVRAM_BEGIN));
PushString("%");
PushChar(0x0D); PushChar(0x0A);
PushChar(0x0D); PushChar(0x0A);
#include "../generated/out_nvram.txt"
Output(4000);
}
int
vm_run(struct vm *vm, int xmax)
{
vm_label_t label;
struct value l, r, v;
struct activation *ar;
struct builtin *ext_bi;
int varity;
int xcount = 0;
struct value zero, one, two;
/*int upcount, index; */
#ifdef DEBUG
if (trace_vm) {
printf("___ virtual machine started ___\n");
}
#endif
zero = value_new_integer(0);
value_deregister(zero);
one = value_new_integer(1);
value_deregister(one);
two = value_new_integer(2);
value_deregister(two);
while (*vm->pc != INSTR_HALT) {
#ifdef DEBUG
if (trace_vm) {
printf("#%d:\n", vm->pc - vm->program);
dump_stack(vm);
}
#endif
if (((++xcount) & 0xff) == 0) {
if (a_count + v_count > gc_target) {
#ifdef DEBUG
if (trace_gc > 0) {
printf("[ARC] GARBAGE COLLECTION STARTED on %d activation records + %d values\n",
a_count, v_count);
/*activation_dump(current_ar, 0);
printf("\n");*/
dump_activation_stack(vm);
}
#endif
gc();
#ifdef DEBUG
if (trace_gc > 0) {
printf("[ARC] GARBAGE COLLECTION FINISHED, now %d activation records + %d values\n",
a_count, v_count);
/*activation_dump(current_ar, 0);
printf("\n");*/
}
#endif
/*
* Slide the target to account for the fact that there
* are now 'a_count' activation records in existence.
* Only GC when there are gc_trigger *more* ar's.
*/
gc_target = a_count + v_count + gc_trigger;
}
/*
* Also, give up control if we've exceeded our timeslice.
*/
if (xcount >= xmax)
return(VM_TIME_EXPIRED);
}
switch (*vm->pc) {
#ifdef INLINE_BUILTINS
case INDEX_BUILTIN_NOT:
POP_VALUE(l);
if (l.type == VALUE_BOOLEAN) {
v = value_new_boolean(!l.v.b);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_AND:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_BOOLEAN && r.type == VALUE_BOOLEAN) {
v = value_new_boolean(l.v.b && r.v.b);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_OR:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_BOOLEAN && r.type == VALUE_BOOLEAN) {
v = value_new_boolean(l.v.b || r.v.b);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_EQU:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
v = value_new_boolean(l.v.i == r.v.i);
} else if (l.type == VALUE_OPAQUE && r.type == VALUE_OPAQUE) {
v = value_new_boolean(l.v.ptr == r.v.ptr);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_NEQ:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
v = value_new_boolean(l.v.i != r.v.i);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_GT:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
v = value_new_boolean(l.v.i > r.v.i);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_LT:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
v = value_new_boolean(l.v.i < r.v.i);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_GTE:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
v = value_new_boolean(l.v.i >= r.v.i);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_LTE:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
v = value_new_boolean(l.v.i <= r.v.i);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_ADD:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
v = value_new_integer(l.v.i + r.v.i);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_MUL:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
v = value_new_integer(l.v.i * r.v.i);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_SUB:
POP_VALUE(r);
POP_VALUE(l);
/* subs++; */
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
v = value_new_integer(l.v.i - r.v.i);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_DIV:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
if (r.v.i == 0)
v = value_new_error("division by zero");
else
v = value_new_integer(l.v.i / r.v.i);
} else {
v = value_new_error("type mismatch");
}
PUSH_VALUE(v);
break;
case INDEX_BUILTIN_MOD:
POP_VALUE(r);
POP_VALUE(l);
if (l.type == VALUE_INTEGER && r.type == VALUE_INTEGER) {
if (r.v.i == 0)
v = value_new_error("modulo by zero");
else
v = value_new_integer(l.v.i % r.v.i);
} else {
v = value_new_error("type mismatch"); }
PUSH_VALUE(v);
break;
#endif /* INLINE_BUILTINS */
/*
* This sort of needs to be here even when INLINE_BUILTINS
* isn't used (in practice INLINE_BUILTINS will always be
* used anyway...)
*/
case INDEX_BUILTIN_RECV:
POP_VALUE(l);
r = value_null();
if (l.type == VALUE_INTEGER) {
if (!process_recv(&r)) {
PUSH_VALUE(l);
return(VM_WAITING);
}
} else {
r = value_new_error("type mismatch");
}
PUSH_VALUE(r);
break;
case INSTR_PUSH_VALUE:
l = *(struct value *)(vm->pc + 1);
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_PUSH_VALUE:\n");
value_print(l);
printf("\n");
}
#endif
PUSH_VALUE(l);
vm->pc += sizeof(struct value);
break;
case INSTR_PUSH_ZERO:
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_PUSH_ZERO\n");
}
#endif
PUSH_VALUE(zero);
break;
case INSTR_PUSH_ONE:
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_PUSH_ONE\n");
}
#endif
PUSH_VALUE(one);
break;
case INSTR_PUSH_TWO:
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_PUSH_TWO\n");
}
#endif
PUSH_VALUE(two);
break;
case INSTR_PUSH_LOCAL:
l = activation_get_value(vm->current_ar,
*(vm->pc + 1), *(vm->pc + 2));
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_PUSH_LOCAL:\n");
value_print(l);
printf("\n");
}
#endif
PUSH_VALUE(l);
vm->pc += sizeof(unsigned char) * 2;
break;
case INSTR_POP_LOCAL:
POP_VALUE(l);
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_POP_LOCAL:\n");
value_print(l);
printf("\n");
}
#endif
activation_set_value(vm->current_ar,
*(vm->pc + 1), *(vm->pc + 2), l);
vm->pc += sizeof(unsigned char) * 2;
break;
case INSTR_INIT_LOCAL:
POP_VALUE(l);
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_INIT_LOCAL:\n");
value_print(l);
printf("\n");
}
#endif
activation_initialize_value(vm->current_ar,
*(vm->pc + 1), l);
vm->pc += sizeof(unsigned char) * 2;
break;
case INSTR_JMP:
label = *(vm_label_t *)(vm->pc + 1);
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_JMP -> #%d:\n", label - vm->program);
}
#endif
vm->pc = label - 1;
break;
case INSTR_JZ:
POP_VALUE(l);
label = *(vm_label_t *)(vm->pc + 1);
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_JZ -> ");
value_print(l);
printf(", #%d:\n", label - vm->program);
}
#endif
if (!l.v.b) {
vm->pc = label - 1;
} else {
vm->pc += sizeof(vm_label_t);
}
break;
case INSTR_CALL:
POP_VALUE(l);
label = l.v.s->v.k->label;
if (l.v.s->v.k->cc > 0) {
/*
* Create a new activation record
* on the heap for this call.
*/
ar = activation_new_on_heap(
l.v.s->v.k->arity +
l.v.s->v.k->locals,
vm->current_ar, l.v.s->v.k->ar);
} else {
/*
* Optimize by placing it on a stack.
*/
ar = activation_new_on_stack(
l.v.s->v.k->arity +
l.v.s->v.k->locals,
vm->current_ar, l.v.s->v.k->ar, vm);
}
/*
* Fill out the activation record.
*/
for (i = l.v.s->v.k->arity - 1; i >= 0; i--) {
POP_VALUE(r);
activation_initialize_value(ar, i, r);
}
vm->current_ar = ar;
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_CALL -> #%d:\n", label - vm->program);
}
#endif
/*
printf("%% process %d pushing pc = %d\n",
current_process->number, vm->pc - vm->program);
*/
PUSH_PC(vm->pc + 1); /* + sizeof(vm_label_t)); */
vm->pc = label - 1;
break;
case INSTR_GOTO:
POP_VALUE(l);
label = l.v.s->v.k->label;
/*
* DON'T create a new activation record for this leap
* UNLESS the current activation record isn't large enough.
*/
/*
printf("GOTOing a closure w/arity %d locals %d\n",
l.v.s->v.k->arity, l.v.s->v.k->locals);
printf("current ar size %d\n", current_ar->size);
*/
if (vm->current_ar->size < l.v.s->v.k->arity + l.v.s->v.k->locals) {
/*
* REMOVE the current activation record, if on the stack.
*/
if (vm->current_ar->admin & AR_ADMIN_ON_STACK) {
ar = vm->current_ar->caller;
activation_free_from_stack(vm->current_ar, vm);
vm->current_ar = ar;
} else {
vm->current_ar = vm->current_ar->caller;
}
/*
* Create a NEW activation record... wherever.
*/
if (l.v.s->v.k->cc > 0) {
/*
* Create a new activation record
* on the heap for this call.
*/
vm->current_ar = activation_new_on_heap(
l.v.s->v.k->arity +
l.v.s->v.k->locals,
vm->current_ar, l.v.s->v.k->ar);
} else {
/*
* Optimize by placing it on a stack.
*/
vm->current_ar = activation_new_on_stack(
l.v.s->v.k->arity +
l.v.s->v.k->locals,
vm->current_ar, l.v.s->v.k->ar, vm);
}
}
/*
printf("NOW GOTOing a closure w/arity %d locals %d\n",
l.v.s->v.k->arity, l.v.s->v.k->locals);
printf("NOW current ar size %d\n", current_ar->size);
*/
/*
* Fill out the current activation record.
*/
for (i = l.v.s->v.k->arity - 1; i >= 0; i--) {
POP_VALUE(r);
activation_set_value(vm->current_ar, i, 0, r);
}
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_GOTO -> #%d:\n", label - vm->program);
}
#endif
/*PUSH_PC(pc + 1);*/ /* + sizeof(vm_label_t)); */
vm->pc = label - 1;
break;
case INSTR_RET:
vm->pc = POP_PC() - 1;
/*
printf("%% process %d popped pc = %d\n",
current_process->number, vm->pc - vm->program);
*/
if (vm->current_ar->admin & AR_ADMIN_ON_STACK) {
ar = vm->current_ar->caller;
activation_free_from_stack(vm->current_ar, vm);
vm->current_ar = ar;
} else {
vm->current_ar = vm->current_ar->caller;
}
if (vm->current_ar == NULL)
return(VM_RETURNED);
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_RET -> #%d:\n", vm->pc - vm->program);
}
#endif
break;
case INSTR_SET_ACTIVATION:
POP_VALUE(l);
l.v.s->v.k->ar = vm->current_ar;
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_SET_ACTIVATION #%d\n",
l.v.s->v.k->label - vm->program);
}
#endif
PUSH_VALUE(l);
break;
case INSTR_COW_LOCAL:
l = activation_get_value(vm->current_ar, *(vm->pc + 1), *(vm->pc + 2));
if (l.v.s->refcount > 1) {
/*
printf("deep-copying ");
value_print(l);
printf("...\n");
*/
r = value_dup(l);
activation_set_value(vm->current_ar, *(vm->pc + 1), *(vm->pc + 2), r);
}
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_COW_LOCAL:\n");
value_print(l);
printf("\n");
}
#endif
vm->pc += sizeof(unsigned char) * 2;
break;
case INSTR_EXTERNAL:
ext_bi = *(struct builtin **)(vm->pc + 1);
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_EXTERNAL(");
fputsu8(stdout, ext_bi->name);
printf("):\n");
}
#endif
varity = ext_bi->arity;
if (varity == -1) {
POP_VALUE(l);
varity = l.v.i;
}
ar = activation_new_on_stack(varity, vm->current_ar, NULL, vm);
for (i = varity - 1; i >= 0; i--) {
POP_VALUE(l);
activation_initialize_value(ar, i, l);
}
v = ext_bi->fn(ar);
activation_free_from_stack(ar, vm);
#ifdef DEBUG
if (trace_vm) {
printf("result was:\n");
value_print(v);
printf("\n");
}
#endif
if (ext_bi->retval == 1)
PUSH_VALUE(v);
vm->pc += sizeof(struct builtin *);
break;
default:
/*
* We assume it was a non-inline builtin.
*/
#ifdef DEBUG
if (trace_vm) {
printf("INSTR_BUILTIN(#%d=", *vm->pc);
fputsu8(stdout, builtins[*vm->pc].name);
printf("):\n");
}
#endif
varity = builtins[*vm->pc].arity;
if (varity == -1) {
POP_VALUE(l);
varity = l.v.i;
}
ar = activation_new_on_stack(varity, vm->current_ar, NULL, vm);
for (i = varity - 1; i >= 0; i--) {
POP_VALUE(l);
activation_initialize_value(ar, i, l);
}
v = builtins[*vm->pc].fn(ar);
activation_free_from_stack(ar, vm);
#ifdef DEBUG
if (trace_vm) {
printf("result was:\n");
value_print(v);
printf("\n");
}
#endif
if (builtins[*vm->pc].retval == 1)
PUSH_VALUE(v);
}
vm->pc++;
}
#ifdef DEBUG
if (trace_vm) {
printf("___ virtual machine finished ___\n");
}
/*printf("subs = %d\n", subs);*/
#endif
return(VM_TERMINATED);
}
