namespace factor {
-/* Allocates memory (allot) */
+// Allocates memory (allot)
callstack* factor_vm::allot_callstack(cell size) {
callstack* stack = allot<callstack>(callstack_object_size(size));
stack->length = tag_fixnum(size);
return stack;
}
-/* We ignore the two topmost frames, the 'callstack' primitive
-frame itself, and the frame calling the 'callstack' primitive,
-so that set-callstack doesn't get stuck in an infinite loop.
+// We ignore the two topmost frames, the 'callstack' primitive
+// frame itself, and the frame calling the 'callstack' primitive,
+// so that set-callstack doesn't get stuck in an infinite loop.
-This means that if 'callstack' is called in tail position, we
-will have popped a necessary frame... however this word is only
-called by continuation implementation, and user code shouldn't
-be calling it at all, so we leave it as it is for now. */
+// This means that if 'callstack' is called in tail position, we
+// will have popped a necessary frame... however this word is only
+// called by continuation implementation, and user code shouldn't
+// be calling it at all, so we leave it as it is for now.
cell factor_vm::second_from_top_stack_frame(context* ctx) {
cell frame_top = ctx->callstack_top;
for (cell i = 0; i < 2; ++i) {
return frame_top;
}
-/* Allocates memory (allot_callstack) */
+// Allocates memory (allot_callstack)
cell factor_vm::capture_callstack(context* ctx) {
cell top = second_from_top_stack_frame(ctx);
cell bottom = ctx->callstack_bottom;
return tag<callstack>(stack);
}
-/* Allocates memory (capture_callstack) */
-void factor_vm::primitive_callstack() { ctx->push(capture_callstack(ctx)); }
-
-/* Allocates memory (capture_callstack) */
+// Allocates memory (capture_callstack)
void factor_vm::primitive_callstack_for() {
context* other_ctx = (context*)pinned_alien_offset(ctx->peek());
ctx->replace(capture_callstack(other_ctx));
}
-struct stack_frame_in_array {
- cell cells[3];
-};
-
-/* Allocates memory (frames.trim()), iterate_callstack_object() */
+// Allocates memory (frames.trim()), iterate_callstack_object()
void factor_vm::primitive_callstack_to_array() {
data_root<callstack> callstack(ctx->peek(), this);
- /* Allocates memory here. */
+ // Allocates memory here.
growable_array frames(this);
auto stack_frame_accumulator = [&](cell frame_top,
cell size,
code_block* owner,
cell addr) {
+ (void)frame_top;
+ (void)size;
data_root<object> executing_quot(owner->owner_quot(), this);
data_root<object> executing(owner->owner, this);
data_root<object> scan(owner->scan(this, addr), this);
};
iterate_callstack_object(callstack.untagged(), stack_frame_accumulator);
- /* The callstack iterator visits frames in reverse order (top to bottom) */
- std::reverse((stack_frame_in_array*)frames.elements->data(),
- (stack_frame_in_array*)(frames.elements->data() +
- frames.count));
frames.trim();
ctx->replace(frames.elements.value());
}
-/* Some primitives implementing a limited form of callstack mutation.
-Used by the single stepper. */
+// Some primitives implementing a limited form of callstack mutation.
+// Used by the single stepper.
void factor_vm::primitive_innermost_stack_frame_executing() {
callstack* stack = untag_check<callstack>(ctx->peek());
void* frame = stack->top();
ctx->replace(code->code_block_for_address(addr)->scan(this, addr));
}
-/* Allocates memory (jit_compile_quotation) */
+// Allocates memory (jit_compile_quotation)
void factor_vm::primitive_set_innermost_stack_frame_quotation() {
data_root<callstack> stack(ctx->pop(), this);
data_root<quotation> quot(ctx->pop(), this);
- stack.untag_check(this);
- quot.untag_check(this);
+ check_tagged(stack);
+ check_tagged(quot);
jit_compile_quotation(quot.value(), true);
*(cell*)inner = quot->entry_point + offset;
}
-/* Allocates memory (allot_alien) */
+// Allocates memory (allot_alien)
void factor_vm::primitive_callstack_bounds() {
- ctx->push(allot_alien((void*)ctx->callstack_seg->start));
- ctx->push(allot_alien((void*)ctx->callstack_seg->end));
+ ctx->push(allot_alien(ctx->callstack_seg->start));
+ ctx->push(allot_alien(ctx->callstack_seg->end));
}
}