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- /*
- Copyright (C) 1994 M. Hagiya, W. Schelter, T. Yuasa
-
- This file is part of GNU Common Lisp, herein referred to as GCL
-
- GCL is free software; you can redistribute it and/or modify it under
- the terms of the GNU LIBRARY GENERAL PUBLIC LICENSE as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GCL is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
- License for more details.
-
- You should have received a copy of the GNU Library General Public License
- along with GCL; see the file COPYING. If not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- */
-
- /*
- vs.h
-
- value stack
- */
-
- /*
- #define VSSIZE 2048
- */
- /* value stack size */
- #define VSGETA 128 /* value stack geta */
-
-
- object value_stack[VSSIZE + 2*VSGETA];
-
-
- object *vs_org;
- object *vs_limit; /* value stack limit */
-
- object *vs_base; /* value stack base */
- object *vs_top; /* value stack top */
-
- #define vs_push(obje) (*vs_top++ = (obje))
-
- #define vs_pop (*--vs_top)
- #define vs_head vs_top[-1]
-
- #define vs_mark object *old_vs_top = vs_top
- #define vs_reset vs_top = old_vs_top
-
- #define vs_check if (vs_top >= vs_limit) \
- vs_overflow()
-
- #define vs_check_push(obje) \
- (vs_top >= vs_limit ? \
- (object)vs_overflow() : (*vs_top++ = (obje)))
-
- #define check_arg(n) \
- if (vs_top - vs_base != (n)) \
- check_arg_failed(n)
-
- #define MMcheck_arg(n) \
- if (vs_top - vs_base < (n)) \
- too_few_arguments(); \
- else if (vs_top - vs_base > (n)) \
- too_many_arguments()
-
- #define vs_reserve(x) if(vs_base+(x) >= vs_limit) \
- vs_overflow();
-