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Viewing changes to config/cpu/powerpc/cycles.h

  • Committer: Bazaar Package Importer
  • Author(s): Luca Falavigna
  • Date: 2008-12-06 11:05:15 UTC
  • mfrom: (4.1.3 sid)
  • Revision ID: james.westby@ubuntu.com-20081206110515-xa9v9pajr9jqvfvg
Tags: 0.115.6-1ubuntu1
* Merge from Debian unstable, remaining Ubuntu changes:
  - Redirect stderr in bash completion (Debian #504488).

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config/cpu/powerpc/cycles.h
 
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/*
 
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    Copyright (C) 2001 Paul Davis
 
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    Code derived from various headers from the Linux kernel
 
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    This program is free software; you can redistribute it and/or modify
 
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    it under the terms of the GNU General Public License as published by
 
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    the Free Software Foundation; either version 2 of the License, or
 
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    (at your option) any later version.
 
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    This program is distributed in the hope that it will be useful,
 
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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    GNU General Public License for more details.
 
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    You should have received a copy of the GNU General Public License
 
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    along with this program; if not, write to the Free Software
 
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    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
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*/
 
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#ifndef __jack_cycles_h__
 
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#define __jack_cycles_h__
 
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/* PowerPC */
 
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#define CPU_FTR_601                     0x00000100
 
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#ifdef __powerpc64__
 
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#define CPU_FTR_CELL_TB_BUG             0x0000800000000000UL
 
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#endif /* __powerpc64__ */
 
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typedef unsigned long cycles_t;
 
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/* For the "cycle" counter we use the timebase lower half. */
 
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extern cycles_t cacheflush_time;
 
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static inline cycles_t get_cycles(void)
 
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{
 
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        cycles_t ret = 0;
 
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#ifdef __powerpc64__
 
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#ifdef ENABLE_CELLBE
 
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        asm volatile(                                   \
 
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                "90:    mftb %0;\n"                     \
 
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                "97:    cmpwi %0,0;\n"                  \
 
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                "       beq- 90b;\n"                    \
 
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                "99:\n"                                 \
 
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                ".section __ftr_fixup,\"a\"\n"          \
 
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                ".align 3\n"                            \
 
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                "98:\n"                                 \
 
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                "       .llong %1\n"                    \
 
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                "       .llong %1\n"                    \
 
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                "       .llong 97b-98b\n"               \
 
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                "       .llong 99b-98b\n"               \
 
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                ".previous"                             \
 
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                : "=r" (ret) : "i" (CPU_FTR_CELL_TB_BUG));
 
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#else /* !ENABLE_CELLBE */
 
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        __asm__ __volatile__("mftb %0" : "=r" (ret));
 
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#endif /* !ENABLE_CELLBE */
 
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#else /* !__powerpc64__ */
 
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        __asm__ __volatile__(
 
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                "98:    mftb %0\n"
 
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                "99:\n"
 
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                ".section __ftr_fixup,\"a\"\n"
 
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                "       .long %1\n"
 
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                "       .long 0\n"
 
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                "       .long 98b\n"
 
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                "       .long 99b\n"
 
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                ".previous"
 
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                : "=r" (ret) : "i" (CPU_FTR_601));
 
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#endif /* !__powerpc64__ */
 
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        return ret;
 
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}
 
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#endif /* __jack_cycles_h__ */