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mase-fe.h
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/* mase-fe.h - sim-mase front-end */
/* MASE was created by Eric Larson, Saugata Chatterjee, Dan Ernst, and
* Todd M. Austin at the University of Michigan.
*/
/* SimpleScalar(TM) Tool Suite
* Copyright (C) 1994-2001 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
* All Rights Reserved.
*
* THIS IS A LEGAL DOCUMENT, BY USING SIMPLESCALAR,
* YOU ARE AGREEING TO THESE TERMS AND CONDITIONS.
*
* No portion of this work may be used by any commercial entity, or for any
* commercial purpose, without the prior, written permission of SimpleScalar,
* LLC ([email protected]). Nonprofit and noncommercial use is permitted
* as described below.
*
* 1. SimpleScalar is provided AS IS, with no warranty of any kind, express
* or implied. The user of the program accepts full responsibility for the
* application of the program and the use of any results.
*
* 2. Nonprofit and noncommercial use is encouraged. SimpleScalar may be
* downloaded, compiled, executed, copied, and modified solely for nonprofit,
* educational, noncommercial research, and noncommercial scholarship
* purposes provided that this notice in its entirety accompanies all copies.
* Copies of the modified software can be delivered to persons who use it
* solely for nonprofit, educational, noncommercial research, and
* noncommercial scholarship purposes provided that this notice in its
* entirety accompanies all copies.
*
* 3. ALL COMMERCIAL USE, AND ALL USE BY FOR PROFIT ENTITIES, IS EXPRESSLY
* PROHIBITED WITHOUT A LICENSE FROM SIMPLESCALAR, LLC ([email protected]).
*
* 4. No nonprofit user may place any restrictions on the use of this software,
* including as modified by the user, by any other authorized user.
*
* 5. Noncommercial and nonprofit users may distribute copies of SimpleScalar
* in compiled or executable form as set forth in Section 2, provided that
* either: (A) it is accompanied by the corresponding machine-readable source
* code, or (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.
*
* 6. SimpleScalar was developed by Todd M. Austin, Ph.D. The tool suite is
* currently maintained by SimpleScalar LLC ([email protected]). US Mail:
* 2395 Timbercrest Court, Ann Arbor, MI 48105.
*
* Copyright (C) 2000-2001 by The Regents of The University of Michigan.
* Copyright (C) 1994-2001 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
*/
/* IFQ (instruction fetch queue) */
extern struct fetch_rec *IFQ;
extern int IFQ_num;
extern int IFQ_tail, IFQ_head;
/* branch predictor */
extern struct bpred_t *pred;
/* rename table */
struct rename_entry *rename_table[MD_TOTAL_REGS];
#define IS_RENAME_HEAD(REN, NAME) (rename_table[NAME] == REN)
/* initialize the rename table */
void
rename_init(void);
/* get an entry from the rename_free_list */
struct rename_entry *
rename_get_entry(void);
/* dump the contents of the rename table */
void
rename_dump(FILE *stream);
/* removes the rename table entry */
void
rename_remove_entry(struct rename_entry *ent, int odep_name);
/* initialize the front end */
void
fe_init(void);
/* recovers the front end from a misprediction */
void
fe_recover(md_addr_t recover_PC);
/* dump contents of fetch queue */
void
ifq_dump(FILE *stream); /* output stream */
/* Dispatch instructions from the IFQ: instructions are allocated ROB and
LSQ (for load/stores) resources. Input and output dependence chains
are updated accordingly. */
void
mase_dispatch(void);
/* Initialize the values of PC at the beginning of the simulation. This
* is called after fastwording and before the main simulator loop. */
void
fetch_setup_PC(md_addr_t PC); /* initial PC value */
/* dump contents of fetch stage */
void
fetch_dump(FILE *stream); /* output stream */
/* fetches instructions */
void
mase_fetch(void);