subrs are now VM trampoline procedures
* libguile/_scm.h: Add foreign.h and programs.h to the private include
list, as snarfing subrs with static allocation now needs access to
some of their enums and macros.
* libguile/gsubr.c (create_gsubr): Instead of creating a tc7_gsubr
object, create a VM program with the call-subr opcode, so that the
representation of subrs is now gsubrs. CPP and elisp, together at
last.
(scm_subr_objcode_trampoline): New function, used by the SCM_DEFINE
snarf macro.
* libguile/gsubr.h (SCM_SUBR_META_INFO, SCM_SUBR_PROPS)
(SCM_SET_SUBR_GENERIC_LOC, SCM_SUBR_ARITY_TO_TYPE): Remove these
macros. They were never deprecated, but hopefully people aren't using
them.
(SCM_SUBRF, SCM_SUBR_NAME, SCM_SUBR_GENERIC, SCM_SET_SUBR_GENERIC):
Update to work on the new subr representation.
* libguile/objcodes.h (SCM_F_OBJCODE_IS_STATIC): New flag, indicates
that the "backing store" of the objcode is statically allocated.
* libguile/procprop.c (scm_sym_name): Define here instead of in gsubr.c.
* libguile/snarf.h (SCM_DEFINE): If we are doing static allocation,
statically allocate the foreign object, the object table, and the
program, and use some SCM_SNARF_INITtery to fix things up.
Unfortunately I have not been able to make this immutable. It might be
possible, though.
(SCM_IMMUTABLE_CELL, SCM_STATIC_DOUBLE_CELL, SCM_IMMUTABLE_FOREIGN):
(SCM_STATIC_SUBR_OBJVECT, SCM_STATIC_PROGRAM): New helper macros.