projects / OpenSPARC-T2-SAM / blame
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1 | # ========== Copyright Header Begin ========================================== |
| 2 | # | |
| 3 | # OpenSPARC T2 Processor File: SamUtility.py | |
| 4 | # Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
| 5 | # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES. | |
| 6 | # | |
| 7 | # The above named program is free software; you can redistribute it and/or | |
| 8 | # modify it under the terms of the GNU General Public | |
| 9 | # License version 2 as published by the Free Software Foundation. | |
| 10 | # | |
| 11 | # The above named program is distributed in the hope that it will be | |
| 12 | # useful, but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | # General Public License for more details. | |
| 15 | # | |
| 16 | # You should have received a copy of the GNU General Public | |
| 17 | # License along with this work; if not, write to the Free Software | |
| 18 | # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. | |
| 19 | # | |
| 20 | # ========== Copyright Header End ============================================ | |
| 21 | # | |
| 22 | # collection of utility functions | |
| 23 | # | |
| 24 | ||
| 25 | pfeSim = None | |
| 26 | ||
| 27 | def initSamUtility(sim): | |
| 28 | """ | |
| 29 | this function must be called first before other functions in this file | |
| 30 | can be used. | |
| 31 | """ | |
| 32 | global pfeSim | |
| 33 | pfeSim = sim | |
| 34 | ||
| 35 | ||
| 36 | def lstmode(on=None): | |
| 37 | """ | |
| 38 | set display mode: | |
| 39 | 0 - silent mode | |
| 40 | 1 - display instr & register delta | |
| 41 | 2 - display instr | |
| 42 | """ | |
| 43 | global pfeSim | |
| 44 | for s in pfeSim.s: | |
| 45 | s.lstmode(on) | |
| 46 | ||
| 47 | ||
| 48 | def stepx(sid=[-1], n=1, d=1): | |
| 49 | """ | |
| 50 | execute instructions among strands in round-rabin order | |
| 51 | sid: the strands to be included in the execution, -1 means all strands | |
| 52 | n: number of instructions to be executed per strand | |
| 53 | d: number of instructions to be executed per iteration | |
| 54 | """ | |
| 55 | global pfeSim | |
| 56 | ss = [] | |
| 57 | if -1 in sid: | |
| 58 | # include all strands | |
| 59 | ss = pfeSim.s | |
| 60 | else: | |
| 61 | # otherwise only selected strand(s) | |
| 62 | for id in sid: | |
| 63 | ss.append(pfeSim.s[id]) | |
| 64 | while n > d: | |
| 65 | for s in ss: | |
| 66 | brk = s.step(d) | |
| 67 | if brk > 0: | |
| 68 | # this strand hits a breakpoint, stop execution, | |
| 69 | # return remaining instruction count | |
| 70 | return n-(d-brk) | |
| 71 | n -= d | |
| 72 | for s in ss: | |
| 73 | brk = s.step(n) | |
| 74 | if brk > 0: | |
| 75 | # this strand hits a breakpoint, stop execution, | |
| 76 | # return remaining instruction count | |
| 77 | return brk |