/* * regs.h - architected register state interfaces * * This file is a part of the SimpleScalar tool suite written by * Todd M. Austin as a part of the Multiscalar Research Project. *   * The tool suite is currently maintained by Doug Burger and Todd M. Austin. *  * Copyright (C) 1994, 1995, 1996, 1997 by Todd M. Austin * * This source file is distributed "as is" in the hope that it will be * useful.  The tool set comes with no warranty, and no author or * distributor accepts any responsibility for the consequences of its * use.  *  * Everyone is granted permission to copy, modify and redistribute * this tool set under the following conditions: *  *    This source code is distributed for non-commercial use only.  *    Please contact the maintainer for restrictions applying to  *    commercial use. * *    Permission is granted to anyone to make or distribute copies *    of this source code, either as received or modified, in any *    medium, provided that all copyright notices, permission and *    nonwarranty notices are preserved, and that the distributor *    grants the recipient permission for further redistribution as *    permitted by this document. * *    Permission is granted to distribute this file in compiled *    or executable form under the same conditions that apply for *    source code, provided that either: * *    A. it is accompanied by the corresponding machine-readable *       source code, *    B. it is accompanied by a written offer, with no time limit, *       to give anyone a machine-readable copy of the corresponding *       source code in return for reimbursement of the cost of *       distribution.  This written offer must permit verbatim *       duplication by anyone, or *    C. it is distributed by someone who received only the *       executable form, and is accompanied by a copy of the *       written offer of source code that they received concurrently. * * In other words, you are welcome to use, share and improve this * source file.  You are forbidden to forbid anyone else to use, share * and improve what you give them. * * INTERNET: dburger@cs.wisc.edu * US Mail:  1210 W. Dayton Street, Madison, WI 53706 * * $Id: regs.h,v 1.4 1997/03/11 01:19:41 taustin Exp taustin $ * * $Log: regs.h,v $ * Revision 1.4  1997/03/11  01:19:41  taustin * updated copyright * long/int tweaks made for ALPHA target support * * Revision 1.3  1997/01/06  16:02:48  taustin * \comments updated * * Revision 1.1  1996/12/05  18:50:23  taustin * Initial revision * * */#ifndef REGS_H#define REGS_H#include "ss.h"/* * This module implements the SimpleScalar architected register state, which * includes integer and floating point registers and miscellaneous registers. * The architected register state is as follows: * * Integer Register File:                  Miscellaneous Registers: * (aka general-purpose registers, GPR's) * *   +------------------+                  +------------------+ *   | $r0 (src/sink 0) |                  | PC               | Program Counter *   +------------------+                  +------------------+ *   | $r1              |                  | HI               | Mult/Div HI val *   +------------------+                  +------------------+ *   |  .               |                  | LO               | Mult/Div LO val *   |  .               |                  +------------------+ *   |  .               | *   +------------------+ *   | $r31             | *   +------------------+ * * Floating point Register File: *    single-precision:  double-precision: *   +------------------+------------------+  +------------------+ *   | $f0              | $f1 (for double) |  | FCC              | FP codes *   +------------------+------------------+  +------------------+ *   | $f1              | *   +------------------+ *   |  .               | *   |  .               | *   |  .               | *   +------------------+------------------+ *   | $f30             | $f31 (for double)| *   +------------------+------------------+ *   | $f31             | *   +------------------+ * * The floating point register file can be viewed as either 32 single-precision * (32-bit IEEE format) floating point values $f0 to $f31, or as 16 * double-precision (64-bit IEEE format) floating point values $f0 to $f30. *//* (signed) integer register file */extern SS_WORD_TYPE regs_R[SS_NUM_REGS];/* floating point register file format */union regs_FP {    SS_WORD_TYPE l[SS_NUM_REGS];		/* integer word view */    SS_FLOAT_TYPE f[SS_NUM_REGS];		/* single-precision FP view */    SS_DOUBLE_TYPE d[SS_NUM_REGS/2];		/* double-precision FP view */};/* floating point register file */extern union regs_FP regs_F;/* (signed) hi register, holds mult/div results */extern SS_WORD_TYPE regs_HI;/* (signed) lo register, holds mult/div results */extern SS_WORD_TYPE regs_LO;/* floating point condition codes */extern int regs_FCC;/* program counter */extern SS_ADDR_TYPE regs_PC;/* initialize architected register state */void regs_init(void);/* dump all architected register state values to output stream STREAM */voidregs_dump(FILE *stream);	/* output stream */#endif /* REGS_H */