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Revert "VM: removing the unused callstack-bounds primitive" 

This reverts commit c55a6ef873.

This primitive is useful for fixing the macOS pthread bug and the javascriptcore library.
paths
Doug Coleman 2018-06-03 21:38:53 -05:00
parent 2e65fabf30
commit aa87e69d25
5 changed files with 13 additions and 1 deletions
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4
basis/bootstrap/image/primitives/primitives.factor
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@ -313,6 +313,10 @@ CONSTANT: all-primitives {
{ object } { fixnum } f
}
{ "become" ( old new -- ) "become" { array array } { } f }
{
"callstack-bounds" ( -- start end ) "callstack_bounds"
{ } { alien alien } make-flushable
}
{
"check-datastack" ( array in# out# -- ? ) "check_datastack"
{ array integer integer } { object } make-flushable

1
core/kernel/kernel.factor
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@ -37,6 +37,7 @@ PRIMITIVE: (execute) ( word -- )
PRIMITIVE: (identity-hashcode) ( obj -- code )
PRIMITIVE: become ( old new -- )
PRIMITIVE: c-to-factor ( -- )
PRIMITIVE: callstack-bounds ( -- start end )
PRIMITIVE: check-datastack ( array in# out# -- ? )
PRIMITIVE: compute-identity-hashcode ( obj -- )
PRIMITIVE: context-object ( n -- obj )

6
vm/callstack.cpp
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@ -104,4 +104,10 @@ void factor_vm::primitive_set_innermost_stack_frame_quotation() {
*(cell*)inner = quot->entry_point + offset;
}
// Allocates memory (allot_alien)
void factor_vm::primitive_callstack_bounds() {
ctx->push(allot_alien(ctx->callstack_seg->start));
ctx->push(allot_alien(ctx->callstack_seg->end));
}
}

2
vm/primitives.hpp
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@ -11,7 +11,7 @@ namespace factor {
_(bignum_shift) _(bignum_subtract) _(bignum_to_fixnum) \
_(bignum_to_fixnum_strict) _(bignum_xor) _(bits_double) _(bits_float) \
_(byte_array) _(callback) _(callback_room) \
_(callstack_for) _(callstack_to_array) \
_(callstack_bounds) _(callstack_for) _(callstack_to_array) \
_(check_datastack) _(clone) _(code_blocks) _(code_room) \
_(compact_gc) _(compute_identity_hashcode) _(context_object) \
_(context_object_for) _(current_callback) _(data_room) \

1
vm/vm.hpp
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@ -605,6 +605,7 @@ struct factor_vm {
void primitive_innermost_stack_frame_executing();
void primitive_innermost_stack_frame_scan();
void primitive_set_innermost_stack_frame_quotation();
void primitive_callstack_bounds();
template <typename Iterator, typename Fixup>
void iterate_callstack(context* ctx, Iterator& iterator, Fixup& fixup);