File:  [gforth] / gforth / vmgen-ex / mini.h
Revision 1.12: download - view: text, annotated - select for diffs
Mon Dec 31 19:02:25 2007 UTC (11 years, 10 months ago) by anton
Branches: MAIN
CVS tags: v0-7-0, HEAD
updated copyright year after changing license notice

    1: /* support functions for vmgen example
    2: 
    3:   Copyright (C) 2001,2002,2003,2007 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 3
   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, see http://www.gnu.org/licenses/.
   19: */
   20: 
   21: #include <stdio.h>
   22: 
   23: typedef long Cell;
   24: #ifdef __GNUC__
   25: typedef void *Label;
   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 */
   29: #else
   30: typedef long Label;
   31: typedef long Inst;
   32: #endif
   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;
   44: extern Inst *vmcode_end;
   45: extern int use_super;
   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);
   53: void vm_print_profile(FILE *file);
   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))
   64: /* the cast in vm_Cell2Cell is needed because the base type for
   65:    inst-stream is Cell, but *IP is an Inst */
   66: 
   67: /* for future extensions */
   68: #define IMM_ARG(access,value)		(access)
   69: 
   70: #define VM_IS_INST(inst, n) ((inst) == vm_prim[n])
   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);
   78: void printarg_Cell(Cell i);
   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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