1: /* support functions for vmgen example
2:
3: Copyright (C) 2001 Free Software Foundation, Inc.
4:
5: This file is part of Gforth.
6:
7: Gforth is free software; you can redistribute it and/or
8: modify it under the terms of the GNU General Public License
9: as published by the Free Software Foundation; either version 2
10: of the License, or (at your option) any later version.
11:
12: This program is distributed in the hope that it will be useful,
13: but WITHOUT ANY WARRANTY; without even the implied warranty of
14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: GNU General Public License for more details.
16:
17: You should have received a copy of the GNU General Public License
18: along with this program; if not, write to the Free Software
19: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20: */
21:
22: #include <stdio.h>
23:
24: typedef void *Label;
25: typedef void *Inst; /* for direct threading, the same as Label */
26: typedef long Cell;
27:
28: extern Inst *vm_prim;
29: extern int locals;
30: extern Cell peeptable;
31: extern int vm_debug;
32: extern FILE *yyin;
33: extern int yylineno;
34: extern char *program_name;
35: extern FILE *vm_out;
36: extern Inst *vmcodep;
37: extern Inst *last_compiled;
38: extern Inst *vmcode_end;
39:
40: /* generic vmgen support functions (e.g., wrappers) */
41: void gen_inst(Inst **vmcodepp, Inst i);
42: void init_peeptable(void);
43: void vm_disassemble(Inst *ip, Inst *endp, Inst prim[]);
44: void vm_count_block(Inst *ip);
45: struct block_count *block_insert(Inst *ip);
46: void vm_print_profile(FILE *file);
47:
48: /* mini type-specific support functions */
49: void genarg_i(Inst **vmcodepp, Cell i);
50: void printarg_i(Cell i);
51: void genarg_target(Inst **vmcodepp, Inst *target);
52: void printarg_target(Inst *target);
53: void printarg_a(char *a);
54: void printarg_Cell(Cell i);
55:
56: /* engine functions (type not fixed) */
57: Cell engine(Inst *ip0, Cell *sp, char *fp);
58: Cell engine_debug(Inst *ip0, Cell *sp, char *fp);
59:
60: /* other generic functions */
61: int yyparse(void);
62:
63: /* mini-specific functions */
64: void insert_func(char *name, Inst *start, int locals, int nonparams);
65: Inst *func_addr(char *name);
66: Cell func_calladjust(char *name);
67: void insert_local(char *name);
68: Cell var_offset(char *name);
69: void gen_main_end(void);
70:
71: /* stack pointer change for a function with n nonparams */
72: #define adjust(n) ((n) * -sizeof(Cell))
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