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: #ifdef __GNUC__
25: typedef void *Label;
26: typedef void *Inst; /* for direct threading, the same as Label */
27: #else
28: typedef long Label;
29: typedef long Inst;
30: #endif
31: typedef long Cell;
32:
33: extern Inst *vm_prim;
34: extern int locals;
35: extern Cell peeptable;
36: extern int vm_debug;
37: extern FILE *yyin;
38: extern int yylineno;
39: extern char *program_name;
40: extern FILE *vm_out;
41: extern Inst *vmcodep;
42: extern Inst *last_compiled;
43: extern Inst *vmcode_end;
44: extern int use_super;
45:
46: /* generic vmgen support functions (e.g., wrappers) */
47: void gen_inst(Inst **vmcodepp, Inst i);
48: void init_peeptable(void);
49: void vm_disassemble(Inst *ip, Inst *endp, Inst prim[]);
50: void vm_count_block(Inst *ip);
51: struct block_count *block_insert(Inst *ip);
52: void vm_print_profile(FILE *file);
53: #define VM_IS_INST(inst, n) ((inst) == vm_prim[n])
54:
55: /* mini type-specific support functions */
56: void genarg_i(Inst **vmcodepp, Cell i);
57: void printarg_i(Cell i);
58: void genarg_target(Inst **vmcodepp, Inst *target);
59: void printarg_target(Inst *target);
60: void printarg_a(char *a);
61: void printarg_Cell(Cell i);
62:
63: /* engine functions (type not fixed) */
64: Cell engine(Inst *ip0, Cell *sp, char *fp);
65: Cell engine_debug(Inst *ip0, Cell *sp, char *fp);
66:
67: /* other generic functions */
68: int yyparse(void);
69:
70: /* mini-specific functions */
71: void insert_func(char *name, Inst *start, int locals, int nonparams);
72: Inst *func_addr(char *name);
73: Cell func_calladjust(char *name);
74: void insert_local(char *name);
75: Cell var_offset(char *name);
76: void gen_main_end(void);
77:
78: /* stack pointer change for a function with n nonparams */
79: #define adjust(n) ((n) * -sizeof(Cell))
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