Annotation of gforth/vmgen-ex2/mini.h, revision 1.6
1.1 anton 1: /* support functions for vmgen example
2:
1.6 ! anton 3: Copyright (C) 2001,2002 Free Software Foundation, Inc.
1.1 anton 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:
1.2 anton 24: #ifdef __GNUC__
1.1 anton 25: typedef void *Label;
1.2 anton 26: #else
27: typedef long Label;
28: #endif
1.1 anton 29:
30: typedef union Cell {
31: long i;
32: union Cell *target;
33: Label inst;
34: char *a;
35: } Cell, Inst;
36:
37: #define vm_Cell2i(_cell,_x) ((_x)=(_cell).i)
38: #define vm_i2Cell(_x,_cell) ((_cell).i=(_x))
39: #define vm_Cell2target(_cell,_x) ((_x)=(_cell).target)
40: #define vm_target2Cell(_x,_cell) ((_cell).target=(_x))
41: #define vm_Cell2a(_cell,_x) ((_x)=(_cell).a)
42: #define vm_a2Cell(_x,_cell) ((_cell).a=(_x))
1.4 anton 43: #define vm_Cell2Cell(_x,_y) ((_y)=(_x))
1.1 anton 44:
1.5 anton 45: /* for future extensions */
46: #define IMM_ARG(access,value) (access)
47:
1.1 anton 48: #define VM_IS_INST(_inst, n) ((_inst).inst == vm_prim[n])
49:
50: extern Label *vm_prim;
51: extern int locals;
52: extern struct Peeptable_entry **peeptable;
53: extern int vm_debug;
54: extern FILE *yyin;
55: extern int yylineno;
56: extern char *program_name;
57: extern FILE *vm_out;
58: extern Inst *vmcodep;
59: extern Inst *last_compiled;
60: extern Inst *vmcode_end;
1.3 anton 61: extern int use_super;
1.1 anton 62:
63: /* generic vmgen support functions (e.g., wrappers) */
64: void gen_inst(Inst **vmcodepp, Label i);
65: void init_peeptable(void);
66: void vm_disassemble(Inst *ip, Inst *endp, Label prim[]);
67: void vm_count_block(Inst *ip);
68: struct block_count *block_insert(Inst *ip);
69: void vm_print_profile(FILE *file);
70:
71: /* mini type-specific support functions */
72: void genarg_i(Inst **vmcodepp, long i);
73: void printarg_i(long i);
74: void genarg_target(Inst **vmcodepp, Inst *target);
75: void printarg_target(Inst *target);
76: void printarg_a(char *a);
77: void printarg_Cell(Cell i);
78:
79: /* engine functions (type not fixed) */
80: long engine(Inst *ip0, Cell *sp, char *fp);
81: long engine_debug(Inst *ip0, Cell *sp, char *fp);
82:
83: /* other generic functions */
84: int yyparse(void);
85:
86: /* mini-specific functions */
87: void insert_func(char *name, Inst *start, int locals, int nonparams);
88: Inst *func_addr(char *name);
89: long func_calladjust(char *name);
90: void insert_local(char *name);
91: long var_offset(char *name);
92: void gen_main_end(void);
93:
94: /* stack pointer change for a function with n nonparams */
95: #define adjust(n) ((n) * -sizeof(Cell))
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