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/* support functions for vmgen example
Copyright (C) 2001,2002,2003,2007 Free Software Foundation, Inc.
This file is part of Gforth.
Gforth is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation, either version 3
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see http://www.gnu.org/licenses/.
*/
#include <stdio.h>
#ifdef __GNUC__
typedef void *Label;
#else
typedef long Label;
#endif
typedef union Cell {
long i;
union Cell *target;
Label inst;
char *a;
} Cell, Inst;
#define vm_Cell2i(_cell,_x) ((_x)=(_cell).i)
#define vm_i2Cell(_x,_cell) ((_cell).i=(_x))
#define vm_Cell2target(_cell,_x) ((_x)=(_cell).target)
#define vm_target2Cell(_x,_cell) ((_cell).target=(_x))
#define vm_Cell2a(_cell,_x) ((_x)=(_cell).a)
#define vm_a2Cell(_x,_cell) ((_cell).a=(_x))
#define vm_Cell2Cell(_x,_y) ((_y)=(_x))
/* for future extensions */
#define IMM_ARG(access,value) (access)
#define VM_IS_INST(_inst, n) ((_inst).inst == vm_prim[n])
extern Label *vm_prim;
extern int locals;
extern struct Peeptable_entry **peeptable;
extern int vm_debug;
extern FILE *yyin;
extern int yylineno;
extern char *program_name;
extern FILE *vm_out;
extern Inst *vmcodep;
extern Inst *last_compiled;
extern Inst *vmcode_end;
extern int use_super;
/* generic vmgen support functions (e.g., wrappers) */
void gen_inst(Inst **vmcodepp, Label i);
void init_peeptable(void);
void vm_disassemble(Inst *ip, Inst *endp, Label prim[]);
void vm_count_block(Inst *ip);
struct block_count *block_insert(Inst *ip);
void vm_print_profile(FILE *file);
/* mini type-specific support functions */
void genarg_i(Inst **vmcodepp, long i);
void printarg_i(long i);
void genarg_target(Inst **vmcodepp, Inst *target);
void printarg_target(Inst *target);
void printarg_a(char *a);
void printarg_Cell(Cell i);
/* engine functions (type not fixed) */
long engine(Inst *ip0, Cell *sp, char *fp);
long engine_debug(Inst *ip0, Cell *sp, char *fp);
/* other generic functions */
int yyparse(void);
/* mini-specific functions */
void insert_func(char *name, Inst *start, int locals, int nonparams);
Inst *func_addr(char *name);
long func_calladjust(char *name);
void insert_local(char *name);
long var_offset(char *name);
void gen_main_end(void);
/* stack pointer change for a function with n nonparams */
#define adjust(n) ((n) * -sizeof(Cell))
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