File:  [gforth] / gforth / vmgen-ex / mini.h
Revision 1.6: download - view: text, annotated - select for diffs
Wed Aug 7 10:11:18 2002 UTC (19 years, 5 months ago) by anton
Branches: MAIN
CVS tags: HEAD
VM disassembler now prints immediate arguments nicely

    1: /* support functions for vmgen example
    2: 
    3:   Copyright (C) 2001 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 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: #ifdef __GNUC__
   25: typedef void *Label;
   26: typedef void *Inst; /* for direct threading, the same as Label */
   27: #else
   28: typedef long Label;
   29: typedef long Inst;
   30: #endif
   31: typedef long Cell;
   32: 
   33: extern Inst *vm_prim;
   34: extern int locals;
   35: extern Cell peeptable;
   36: extern int vm_debug;
   37: extern FILE *yyin;
   38: extern int yylineno;
   39: extern char *program_name;
   40: extern FILE *vm_out;
   41: extern Inst *vmcodep;
   42: extern Inst *last_compiled;
   43: extern Inst *vmcode_end;
   44: extern int use_super;
   45: 
   46: /* generic vmgen support functions (e.g., wrappers) */
   47: void gen_inst(Inst **vmcodepp, Inst i);
   48: void init_peeptable(void);
   49: void vm_disassemble(Inst *ip, Inst *endp, Inst prim[]);
   50: void vm_count_block(Inst *ip);
   51: struct block_count *block_insert(Inst *ip);
   52: void vm_print_profile(FILE *file);
   53: 
   54: /* type change macros; these are specific to the types you use, so you
   55:    have to change this part */
   56: #define vm_Cell2i(_cell,x)	((x)=(long)(_cell))
   57: #define vm_Cell2target(_cell,x)	((x)=(Inst *)(_cell))
   58: #define vm_Cell2a(_cell,x)	((x)=(char *)(_cell))
   59: #define vm_i2Cell(x,_cell)	((_cell)=(Cell)(x))
   60: #define vm_target2Cell(x,_cell)	((_cell)=(Cell)(x))
   61: #define vm_a2Cell(x,_cell)	((_cell)=(Cell)(x))
   62: #define vm_Cell2Cell(_x,_y) ((_y)=(Cell)(_x))
   63: 
   64: #define VM_IS_INST(inst, n) ((inst) == vm_prim[n])
   65: 
   66: /* mini type-specific support functions */
   67: void genarg_i(Inst **vmcodepp, Cell i);
   68: void printarg_i(Cell i);
   69: void genarg_target(Inst **vmcodepp, Inst *target);
   70: void printarg_target(Inst *target);
   71: void printarg_a(char *a);
   72: void printarg_Cell(Cell i);
   73: 
   74: /* engine functions (type not fixed) */
   75: Cell engine(Inst *ip0, Cell *sp, char *fp);
   76: Cell engine_debug(Inst *ip0, Cell *sp, char *fp);
   77: 
   78: /* other generic functions */
   79: int yyparse(void);
   80: 
   81: /* mini-specific functions */
   82: void insert_func(char *name, Inst *start, int locals, int nonparams);
   83: Inst *func_addr(char *name);
   84: Cell func_calladjust(char *name);
   85: void insert_local(char *name);
   86: Cell var_offset(char *name);
   87: void gen_main_end(void);
   88: 
   89: /* stack pointer change for a function with n nonparams */
   90: #define adjust(n)  ((n) * -sizeof(Cell))

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