Annotation of gforth/vmgen-ex/mini.h, revision 1.12
1.1 anton 1: /* support functions for vmgen example
2:
1.12 ! 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
1.11 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
1.11 anton 18: along with this program; if not, see http://www.gnu.org/licenses/.
1.1 anton 19: */
20:
21: #include <stdio.h>
22:
1.7 anton 23: typedef long Cell;
1.4 anton 24: #ifdef __GNUC__
1.1 anton 25: typedef void *Label;
1.7 anton 26: typedef Label Inst; /* we could "typedef Cell Inst", removing the need
27: for casts in a few places, but requiring a few
28: casts etc. in other places */
1.4 anton 29: #else
30: typedef long Label;
31: typedef long Inst;
32: #endif
1.1 anton 33:
34: extern Inst *vm_prim;
35: extern int locals;
36: extern Cell peeptable;
37: extern int vm_debug;
38: extern FILE *yyin;
39: extern int yylineno;
40: extern char *program_name;
41: extern FILE *vm_out;
42: extern Inst *vmcodep;
43: extern Inst *last_compiled;
1.2 anton 44: extern Inst *vmcode_end;
1.5 anton 45: extern int use_super;
1.1 anton 46:
47: /* generic vmgen support functions (e.g., wrappers) */
48: void gen_inst(Inst **vmcodepp, Inst i);
49: void init_peeptable(void);
50: void vm_disassemble(Inst *ip, Inst *endp, Inst prim[]);
51: void vm_count_block(Inst *ip);
52: struct block_count *block_insert(Inst *ip);
1.2 anton 53: void vm_print_profile(FILE *file);
1.6 anton 54:
55: /* type change macros; these are specific to the types you use, so you
56: have to change this part */
57: #define vm_Cell2i(_cell,x) ((x)=(long)(_cell))
58: #define vm_Cell2target(_cell,x) ((x)=(Inst *)(_cell))
59: #define vm_Cell2a(_cell,x) ((x)=(char *)(_cell))
60: #define vm_i2Cell(x,_cell) ((_cell)=(Cell)(x))
61: #define vm_target2Cell(x,_cell) ((_cell)=(Cell)(x))
62: #define vm_a2Cell(x,_cell) ((_cell)=(Cell)(x))
63: #define vm_Cell2Cell(_x,_y) ((_y)=(Cell)(_x))
1.7 anton 64: /* the cast in vm_Cell2Cell is needed because the base type for
65: inst-stream is Cell, but *IP is an Inst */
1.6 anton 66:
1.8 anton 67: /* for future extensions */
68: #define IMM_ARG(access,value) (access)
69:
1.3 anton 70: #define VM_IS_INST(inst, n) ((inst) == vm_prim[n])
1.1 anton 71:
72: /* mini type-specific support functions */
73: void genarg_i(Inst **vmcodepp, Cell i);
74: void printarg_i(Cell i);
75: void genarg_target(Inst **vmcodepp, Inst *target);
76: void printarg_target(Inst *target);
77: void printarg_a(char *a);
1.2 anton 78: void printarg_Cell(Cell i);
1.1 anton 79:
80: /* engine functions (type not fixed) */
81: Cell engine(Inst *ip0, Cell *sp, char *fp);
82: Cell engine_debug(Inst *ip0, Cell *sp, char *fp);
83:
84: /* other generic functions */
85: int yyparse(void);
86:
87: /* mini-specific functions */
88: void insert_func(char *name, Inst *start, int locals, int nonparams);
89: Inst *func_addr(char *name);
90: Cell func_calladjust(char *name);
91: void insert_local(char *name);
92: Cell var_offset(char *name);
93: void gen_main_end(void);
94:
95: /* stack pointer change for a function with n nonparams */
96: #define adjust(n) ((n) * -sizeof(Cell))
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