mirror of
https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
442 lines
19 KiB
C
442 lines
19 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2015 Google, Inc
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*
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* Dhrystone is widely available in the public domain. A GPL license is
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* chosen for U-Boot.
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*/
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/*****************************************************************************
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* The BYTE UNIX Benchmarks - Release 3
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* Module: dhry.h SID: 3.4 5/15/91 19:30:21
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*
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*****************************************************************************
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* Bug reports, patches, comments, suggestions should be sent to:
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*
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* Ben Smith, Rick Grehan or Tom Yager
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* ben@bytepb.byte.com rick_g@bytepb.byte.com tyager@bytepb.byte.com
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*
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*****************************************************************************
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* Modification Log:
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* addapted from:
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*
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*
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* "DHRYSTONE" Benchmark Program
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* -----------------------------
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*
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* Version: C, Version 2.1
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*
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* File: dhry.h (part 1 of 3)
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*
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* Date: May 25, 1988
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*
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* Author: Reinhold P. Weicker
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* Siemens AG, AUT E 51
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* Postfach 3220
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* 8520 Erlangen
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* Germany (West)
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* Phone: [+49]-9131-7-20330
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* (8-17 Central European Time)
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* Usenet: ..!mcvax!unido!estevax!weicker
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*
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* Original Version (in Ada) published in
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* "Communications of the ACM" vol. 27., no. 10 (Oct. 1984),
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* pp. 1013 - 1030, together with the statistics
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* on which the distribution of statements etc. is based.
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*
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* In this C version, the following C library functions are used:
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* - strcpy, strcmp (inside the measurement loop)
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* - printf, scanf (outside the measurement loop)
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* In addition, Berkeley UNIX system calls "times ()" or "time ()"
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* are used for execution time measurement. For measurements
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* on other systems, these calls have to be changed.
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*
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* Collection of Results:
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* Reinhold Weicker (address see above) and
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*
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* Rick Richardson
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* PC Research. Inc.
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* 94 Apple Orchard Drive
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* Tinton Falls, NJ 07724
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* Phone: (201) 834-1378 (9-17 EST)
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* Usenet: ...!seismo!uunet!pcrat!rick
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*
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* Please send results to Rick Richardson and/or Reinhold Weicker.
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* Complete information should be given on hardware and software used.
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* Hardware information includes: Machine type, CPU, type and size
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* of caches; for microprocessors: clock frequency, memory speed
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* (number of wait states).
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* Software information includes: Compiler (and runtime library)
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* manufacturer and version, compilation switches, OS version.
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* The Operating System version may give an indication about the
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* compiler; Dhrystone itself performs no OS calls in the measurement loop.
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*
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* The complete output generated by the program should be mailed
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* such that at least some checks for correctness can be made.
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*
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***************************************************************************
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*
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* History: This version C/2.1 has been made for two reasons:
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*
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* 1) There is an obvious need for a common C version of
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* Dhrystone, since C is at present the most popular system
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* programming language for the class of processors
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* (microcomputers, minicomputers) where Dhrystone is used most.
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* There should be, as far as possible, only one C version of
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* Dhrystone such that results can be compared without
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* restrictions. In the past, the C versions distributed
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* by Rick Richardson (Version 1.1) and by Reinhold Weicker
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* had small (though not significant) differences.
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*
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* 2) As far as it is possible without changes to the Dhrystone
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* statistics, optimizing compilers should be prevented from
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* removing significant statements.
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*
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* This C version has been developed in cooperation with
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* Rick Richardson (Tinton Falls, NJ), it incorporates many
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* ideas from the "Version 1.1" distributed previously by
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* him over the UNIX network Usenet.
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* I also thank Chaim Benedelac (National Semiconductor),
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* David Ditzel (SUN), Earl Killian and John Mashey (MIPS),
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* Alan Smith and Rafael Saavedra-Barrera (UC at Berkeley)
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* for their help with comments on earlier versions of the
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* benchmark.
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*
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* Changes: In the initialization part, this version follows mostly
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* Rick Richardson's version distributed via Usenet, not the
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* version distributed earlier via floppy disk by Reinhold Weicker.
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* As a concession to older compilers, names have been made
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* unique within the first 8 characters.
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* Inside the measurement loop, this version follows the
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* version previously distributed by Reinhold Weicker.
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*
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* At several places in the benchmark, code has been added,
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* but within the measurement loop only in branches that
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* are not executed. The intention is that optimizing compilers
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* should be prevented from moving code out of the measurement
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* loop, or from removing code altogether. Since the statements
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* that are executed within the measurement loop have NOT been
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* changed, the numbers defining the "Dhrystone distribution"
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* (distribution of statements, operand types and locality)
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* still hold. Except for sophisticated optimizing compilers,
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* execution times for this version should be the same as
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* for previous versions.
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*
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* Since it has proven difficult to subtract the time for the
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* measurement loop overhead in a correct way, the loop check
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* has been made a part of the benchmark. This does have
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* an impact - though a very minor one - on the distribution
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* statistics which have been updated for this version.
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*
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* All changes within the measurement loop are described
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* and discussed in the companion paper "Rationale for
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* Dhrystone version 2".
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*
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* Because of the self-imposed limitation that the order and
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* distribution of the executed statements should not be
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* changed, there are still cases where optimizing compilers
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* may not generate code for some statements. To a certain
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* degree, this is unavoidable for small synthetic benchmarks.
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* Users of the benchmark are advised to check code listings
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* whether code is generated for all statements of Dhrystone.
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*
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* Version 2.1 is identical to version 2.0 distributed via
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* the UNIX network Usenet in March 1988 except that it corrects
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* some minor deficiencies that were found by users of version 2.0.
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* The only change within the measurement loop is that a
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* non-executed "else" part was added to the "if" statement in
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* Func_3, and a non-executed "else" part removed from Proc_3.
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*
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***************************************************************************
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*
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* Defines: The following "Defines" are possible:
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* -DREG=register (default: Not defined)
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* As an approximation to what an average C programmer
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* might do, the "register" storage class is applied
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* (if enabled by -DREG=register)
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* - for local variables, if they are used (dynamically)
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* five or more times
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* - for parameters if they are used (dynamically)
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* six or more times
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* Note that an optimal "register" strategy is
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* compiler-dependent, and that "register" declarations
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* do not necessarily lead to faster execution.
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* -DNOSTRUCTASSIGN (default: Not defined)
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* Define if the C compiler does not support
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* assignment of structures.
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* -DNOENUMS (default: Not defined)
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* Define if the C compiler does not support
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* enumeration types.
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* -DTIMES (default)
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* -DTIME
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* The "times" function of UNIX (returning process times)
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* or the "time" function (returning wallclock time)
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* is used for measurement.
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* For single user machines, "time ()" is adequate. For
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* multi-user machines where you cannot get single-user
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* access, use the "times ()" function. If you have
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* neither, use a stopwatch in the dead of night.
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* "printf"s are provided marking the points "Start Timer"
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* and "Stop Timer". DO NOT use the UNIX "time(1)"
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* command, as this will measure the total time to
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* run this program, which will (erroneously) include
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* the time to allocate storage (malloc) and to perform
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* the initialization.
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* -DHZ=nnn
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* In Berkeley UNIX, the function "times" returns process
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* time in 1/HZ seconds, with HZ = 60 for most systems.
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* CHECK YOUR SYSTEM DESCRIPTION BEFORE YOU JUST APPLY
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* A VALUE.
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*
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***************************************************************************
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*
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* Compilation model and measurement (IMPORTANT):
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*
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* This C version of Dhrystone consists of three files:
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* - dhry.h (this file, containing global definitions and comments)
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* - dhry_1.c (containing the code corresponding to Ada package Pack_1)
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* - dhry_2.c (containing the code corresponding to Ada package Pack_2)
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*
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* The following "ground rules" apply for measurements:
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* - Separate compilation
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* - No procedure merging
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* - Otherwise, compiler optimizations are allowed but should be indicated
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* - Default results are those without register declarations
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* See the companion paper "Rationale for Dhrystone Version 2" for a more
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* detailed discussion of these ground rules.
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*
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* For 16-Bit processors (e.g. 80186, 80286), times for all compilation
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* models ("small", "medium", "large" etc.) should be given if possible,
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* together with a definition of these models for the compiler system used.
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*
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**************************************************************************
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*
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* Dhrystone (C version) statistics:
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*
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* [Comment from the first distribution, updated for version 2.
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* Note that because of language differences, the numbers are slightly
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* different from the Ada version.]
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*
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* The following program contains statements of a high level programming
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* language (here: C) in a distribution considered representative:
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*
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* assignments 52 (51.0 %)
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* control statements 33 (32.4 %)
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* procedure, function calls 17 (16.7 %)
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*
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* 103 statements are dynamically executed. The program is balanced with
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* respect to the three aspects:
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*
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* - statement type
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* - operand type
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* - operand locality
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* operand global, local, parameter, or constant.
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*
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* The combination of these three aspects is balanced only approximately.
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*
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* 1. Statement Type:
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* ----------------- number
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*
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* V1 = V2 9
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* (incl. V1 = F(..)
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* V = Constant 12
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* Assignment, 7
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* with array element
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* Assignment, 6
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* with record component
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* --
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* 34 34
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*
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* X = Y +|-|"&&"|"|" Z 5
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* X = Y +|-|"==" Constant 6
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* X = X +|- 1 3
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* X = Y *|/ Z 2
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* X = Expression, 1
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* two operators
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* X = Expression, 1
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* three operators
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* --
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* 18 18
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*
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* if .... 14
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* with "else" 7
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* without "else" 7
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* executed 3
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* not executed 4
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* for ... 7 | counted every time
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* while ... 4 | the loop condition
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* do ... while 1 | is evaluated
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* switch ... 1
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* break 1
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* declaration with 1
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* initialization
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* --
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* 34 34
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*
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* P (...) procedure call 11
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* user procedure 10
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* library procedure 1
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* X = F (...)
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* function call 6
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* user function 5
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* library function 1
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* --
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* 17 17
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* ---
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* 103
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*
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* The average number of parameters in procedure or function calls
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* is 1.82 (not counting the function values as implicit parameters).
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*
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*
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* 2. Operators
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* ------------
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* number approximate
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* percentage
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*
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* Arithmetic 32 50.8
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*
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* + 21 33.3
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* - 7 11.1
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* * 3 4.8
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* / (int div) 1 1.6
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*
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* Comparison 27 42.8
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*
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* == 9 14.3
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* /= 4 6.3
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* > 1 1.6
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* < 3 4.8
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* >= 1 1.6
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* <= 9 14.3
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*
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* Logic 4 6.3
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*
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* && (AND-THEN) 1 1.6
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* | (OR) 1 1.6
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* ! (NOT) 2 3.2
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*
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* -- -----
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* 63 100.1
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*
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*
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* 3. Operand Type (counted once per operand reference):
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* ---------------
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* number approximate
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* percentage
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*
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* Integer 175 72.3 %
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* Character 45 18.6 %
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* Pointer 12 5.0 %
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* String30 6 2.5 %
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* Array 2 0.8 %
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* Record 2 0.8 %
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* --- -------
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* 242 100.0 %
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*
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* When there is an access path leading to the final operand (e.g. a record
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* component), only the final data type on the access path is counted.
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*
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*
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* 4. Operand Locality:
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* -------------------
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* number approximate
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* percentage
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*
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* local variable 114 47.1 %
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* global variable 22 9.1 %
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* parameter 45 18.6 %
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* value 23 9.5 %
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* reference 22 9.1 %
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* function result 6 2.5 %
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* constant 55 22.7 %
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* --- -------
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* 242 100.0 %
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*
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*
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* The program does not compute anything meaningful, but it is syntactically
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* and semantically correct. All variables have a value assigned to them
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* before they are used as a source operand.
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*
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* There has been no explicit effort to account for the effects of a
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* cache, or to balance the use of long or short displacements for code or
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* data.
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*
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***************************************************************************
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*/
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/* Compiler and system dependent definitions: */
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#ifndef TIME
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#define TIMES
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#endif
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/* Use times(2) time function unless */
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/* explicitly defined otherwise */
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#define Mic_secs_Per_Second 1000000.0
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/* Berkeley UNIX C returns process times in seconds/HZ */
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#ifdef NOSTRUCTASSIGN
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#define structassign(d, s) memcpy(&(d), &(s), sizeof(d))
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#else
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#define structassign(d, s) d = s
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#endif
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#ifdef NOENUM
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#define Ident_1 0
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#define Ident_2 1
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#define Ident_3 2
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#define Ident_4 3
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#define Ident_5 4
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typedef int Enumeration;
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#else
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typedef enum {Ident_1, Ident_2, Ident_3, Ident_4, Ident_5}
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Enumeration;
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#endif
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/* for boolean and enumeration types in Ada, Pascal */
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/* General definitions: */
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#define Null 0
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/* Value of a Null pointer */
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#define true 1
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#define false 0
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typedef int One_Thirty;
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typedef int One_Fifty;
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typedef char Capital_Letter;
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typedef int Boolean;
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typedef char Str_30 [31];
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typedef int Arr_1_Dim [50];
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typedef int Arr_2_Dim [50] [50];
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typedef struct record
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{
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struct record *Ptr_Comp;
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Enumeration Discr;
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union {
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struct {
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Enumeration Enum_Comp;
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int Int_Comp;
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char Str_Comp [31];
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} var_1;
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struct {
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Enumeration E_Comp_2;
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char Str_2_Comp [31];
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} var_2;
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struct {
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char Ch_1_Comp;
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char Ch_2_Comp;
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} var_3;
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} variant;
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} Rec_Type, *Rec_Pointer;
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/*
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* dhry() - run dhrystone for a given number of iterations
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*
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* @iterations: Number of iterations to run
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*/
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void dhry(int iterations);
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