Annotation of gforth/vmgen-ex2/mini.h, revision 1.9
1.1 anton 1: /* support functions for vmgen example
2:
1.9 ! anton 3: Copyright (C) 2001,2002,2003,2007 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
1.8 anton 9: as published by the Free Software Foundation, either version 3
1.1 anton 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
1.8 anton 18: along with this program; if not, see http://www.gnu.org/licenses/.
1.1 anton 19: */
20:
21: #include <stdio.h>
22:
1.2 anton 23: #ifdef __GNUC__
1.1 anton 24: typedef void *Label;
1.2 anton 25: #else
26: typedef long Label;
27: #endif
1.1 anton 28:
29: typedef union Cell {
30: long i;
31: union Cell *target;
32: Label inst;
33: char *a;
34: } Cell, Inst;
35:
36: #define vm_Cell2i(_cell,_x) ((_x)=(_cell).i)
37: #define vm_i2Cell(_x,_cell) ((_cell).i=(_x))
38: #define vm_Cell2target(_cell,_x) ((_x)=(_cell).target)
39: #define vm_target2Cell(_x,_cell) ((_cell).target=(_x))
40: #define vm_Cell2a(_cell,_x) ((_x)=(_cell).a)
41: #define vm_a2Cell(_x,_cell) ((_cell).a=(_x))
1.4 anton 42: #define vm_Cell2Cell(_x,_y) ((_y)=(_x))
1.1 anton 43:
1.5 anton 44: /* for future extensions */
45: #define IMM_ARG(access,value) (access)
46:
1.1 anton 47: #define VM_IS_INST(_inst, n) ((_inst).inst == vm_prim[n])
48:
49: extern Label *vm_prim;
50: extern int locals;
51: extern struct Peeptable_entry **peeptable;
52: extern int vm_debug;
53: extern FILE *yyin;
54: extern int yylineno;
55: extern char *program_name;
56: extern FILE *vm_out;
57: extern Inst *vmcodep;
58: extern Inst *last_compiled;
59: extern Inst *vmcode_end;
1.3 anton 60: extern int use_super;
1.1 anton 61:
62: /* generic vmgen support functions (e.g., wrappers) */
63: void gen_inst(Inst **vmcodepp, Label i);
64: void init_peeptable(void);
65: void vm_disassemble(Inst *ip, Inst *endp, Label prim[]);
66: void vm_count_block(Inst *ip);
67: struct block_count *block_insert(Inst *ip);
68: void vm_print_profile(FILE *file);
69:
70: /* mini type-specific support functions */
71: void genarg_i(Inst **vmcodepp, long i);
72: void printarg_i(long i);
73: void genarg_target(Inst **vmcodepp, Inst *target);
74: void printarg_target(Inst *target);
75: void printarg_a(char *a);
76: void printarg_Cell(Cell i);
77:
78: /* engine functions (type not fixed) */
79: long engine(Inst *ip0, Cell *sp, char *fp);
80: long engine_debug(Inst *ip0, Cell *sp, char *fp);
81:
82: /* other generic functions */
83: int yyparse(void);
84:
85: /* mini-specific functions */
86: void insert_func(char *name, Inst *start, int locals, int nonparams);
87: Inst *func_addr(char *name);
88: long func_calladjust(char *name);
89: void insert_local(char *name);
90: long var_offset(char *name);
91: void gen_main_end(void);
92:
93: /* stack pointer change for a function with n nonparams */
94: #define adjust(n) ((n) * -sizeof(Cell))
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