2bit_local.hh (6226:f1076450ab2b) 2bit_local.hh (8842:a02932e2e73d)
1/*
1/*
2 * Copyright (c) 2011 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
2 * Copyright (c) 2004-2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright

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60 * a true/false value as to whether it is taken.
61 * @param branch_addr The address of the branch to look up.
62 * @param bp_history Pointer to any bp history state.
63 * @return Whether or not the branch is taken.
64 */
65 bool lookup(Addr &branch_addr, void * &bp_history);
66
67 /**
14 * Copyright (c) 2004-2006 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright

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72 * a true/false value as to whether it is taken.
73 * @param branch_addr The address of the branch to look up.
74 * @param bp_history Pointer to any bp history state.
75 * @return Whether or not the branch is taken.
76 */
77 bool lookup(Addr &branch_addr, void * &bp_history);
78
79 /**
80 * Updates the branch predictor to Not Taken if a BTB entry is
81 * invalid or not found.
82 * @param branch_addr The address of the branch to look up.
83 * @param bp_history Pointer to any bp history state.
84 * @return Whether or not the branch is taken.
85 */
86 void BTBUpdate(Addr &branch_addr, void * &bp_history);
87
88 /**
68 * Updates the branch predictor with the actual result of a branch.
69 * @param branch_addr The address of the branch to update.
70 * @param taken Whether or not the branch was taken.
71 */
72 void update(Addr &branch_addr, bool taken, void *bp_history);
73
74 void squash(void *bp_history)
75 { assert(bp_history == NULL); }

--- 35 unchanged lines hidden --- 		89 * Updates the branch predictor with the actual result of a branch.
90 * @param branch_addr The address of the branch to update.
91 * @param taken Whether or not the branch was taken.
92 */
93 void update(Addr &branch_addr, bool taken, void *bp_history);
94
95 void squash(void *bp_history)
96 { assert(bp_history == NULL); }

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