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| 1 : | anton | 1.1 | /* support functions for vmgen example |
| 2 : | |||
| 3 : | anton | 1.9 | Copyright (C) 2001,2002 Free Software Foundation, Inc. |
| 4 : | anton | 1.1 | |
| 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 : | anton | 1.7 | typedef long Cell; |
| 25 : | anton | 1.4 | #ifdef __GNUC__ |
| 26 : | anton | 1.1 | typedef void *Label; |
| 27 : | anton | 1.7 | typedef Label Inst; /* we could "typedef Cell Inst", removing the need |
| 28 : | for casts in a few places, but requiring a few | ||
| 29 : | casts etc. in other places */ | ||
| 30 : | anton | 1.4 | #else |
| 31 : | typedef long Label; | ||
| 32 : | typedef long Inst; | ||
| 33 : | #endif | ||
| 34 : | anton | 1.1 | |
| 35 : | extern Inst *vm_prim; | ||
| 36 : | extern int locals; | ||
| 37 : | extern Cell peeptable; | ||
| 38 : | extern int vm_debug; | ||
| 39 : | extern FILE *yyin; | ||
| 40 : | extern int yylineno; | ||
| 41 : | extern char *program_name; | ||
| 42 : | extern FILE *vm_out; | ||
| 43 : | extern Inst *vmcodep; | ||
| 44 : | extern Inst *last_compiled; | ||
| 45 : | anton | 1.2 | extern Inst *vmcode_end; |
| 46 : | anton | 1.5 | extern int use_super; |
| 47 : | anton | 1.1 | |
| 48 : | /* generic vmgen support functions (e.g., wrappers) */ | ||
| 49 : | void gen_inst(Inst **vmcodepp, Inst i); | ||
| 50 : | void init_peeptable(void); | ||
| 51 : | void vm_disassemble(Inst *ip, Inst *endp, Inst prim[]); | ||
| 52 : | void vm_count_block(Inst *ip); | ||
| 53 : | struct block_count *block_insert(Inst *ip); | ||
| 54 : | anton | 1.2 | void vm_print_profile(FILE *file); |
| 55 : | anton | 1.6 | |
| 56 : | /* type change macros; these are specific to the types you use, so you | ||
| 57 : | have to change this part */ | ||
| 58 : | #define vm_Cell2i(_cell,x) ((x)=(long)(_cell)) | ||
| 59 : | #define vm_Cell2target(_cell,x) ((x)=(Inst *)(_cell)) | ||
| 60 : | #define vm_Cell2a(_cell,x) ((x)=(char *)(_cell)) | ||
| 61 : | #define vm_i2Cell(x,_cell) ((_cell)=(Cell)(x)) | ||
| 62 : | #define vm_target2Cell(x,_cell) ((_cell)=(Cell)(x)) | ||
| 63 : | #define vm_a2Cell(x,_cell) ((_cell)=(Cell)(x)) | ||
| 64 : | #define vm_Cell2Cell(_x,_y) ((_y)=(Cell)(_x)) | ||
| 65 : | anton | 1.7 | /* the cast in vm_Cell2Cell is needed because the base type for |
| 66 : | inst-stream is Cell, but *IP is an Inst */ | ||
| 67 : | anton | 1.6 | |
| 68 : | anton | 1.8 | /* for future extensions */ |
| 69 : | #define IMM_ARG(access,value) (access) | ||
| 70 : | |||
| 71 : | anton | 1.3 | #define VM_IS_INST(inst, n) ((inst) == vm_prim[n]) |
| 72 : | anton | 1.1 | |
| 73 : | /* mini type-specific support functions */ | ||
| 74 : | void genarg_i(Inst **vmcodepp, Cell i); | ||
| 75 : | void printarg_i(Cell i); | ||
| 76 : | void genarg_target(Inst **vmcodepp, Inst *target); | ||
| 77 : | void printarg_target(Inst *target); | ||
| 78 : | void printarg_a(char *a); | ||
| 79 : | anton | 1.2 | void printarg_Cell(Cell i); |
| 80 : | anton | 1.1 | |
| 81 : | /* engine functions (type not fixed) */ | ||
| 82 : | Cell engine(Inst *ip0, Cell *sp, char *fp); | ||
| 83 : | Cell engine_debug(Inst *ip0, Cell *sp, char *fp); | ||
| 84 : | |||
| 85 : | /* other generic functions */ | ||
| 86 : | int yyparse(void); | ||
| 87 : | |||
| 88 : | /* mini-specific functions */ | ||
| 89 : | void insert_func(char *name, Inst *start, int locals, int nonparams); | ||
| 90 : | Inst *func_addr(char *name); | ||
| 91 : | Cell func_calladjust(char *name); | ||
| 92 : | void insert_local(char *name); | ||
| 93 : | Cell var_offset(char *name); | ||
| 94 : | void gen_main_end(void); | ||
| 95 : | |||
| 96 : | /* stack pointer change for a function with n nonparams */ | ||
| 97 : | #define adjust(n) ((n) * -sizeof(Cell)) |
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