43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
extern void *primitives[];
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/* Primitives are called with two parameters, the word itself and the current
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callstack pointer. The DEFINE_PRIMITIVE() macro takes care of boilerplate to
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save the current callstack pointer so that GC and other facilities can proceed
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to inspect Factor stack frames below the primitive's C stack frame.
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Usage:
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DEFINE_PRIMITIVE(name)
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{
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... CODE ...
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}
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Becomes
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F_FASTCALL void primitive_name(CELL word, F_STACK_FRAME *callstack_top)
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{
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save_callstack_top(callstack_top);
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... CODE ...
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}
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On x86, F_FASTCALL expands into a GCC declaration which forces the two
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parameters to be passed in registers. This simplifies the quotation compiler
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and support code in cpu-x86.S.
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We do the assignment of stack_chain->callstack_top in a ``noinline'' function
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to inhibit assignment re-ordering. */
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#define DEFINE_PRIMITIVE(name) \
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INLINE void primitive_##name##_impl(void); \
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\
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F_FASTCALL void primitive_##name(CELL word, F_STACK_FRAME *callstack_top) \
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{ \
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save_callstack_top(callstack_top); \
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primitive_##name##_impl(); \
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} \
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\
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INLINE void primitive_##name##_impl(void) \
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/* Prototype for header files */
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#define DECLARE_PRIMITIVE(name) \
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F_FASTCALL void primitive_##name(CELL word, F_STACK_FRAME *callstack_top)
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