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Diffstat (limited to 'REORG.TODO/sysdeps/alpha/hp-timing.h')
-rw-r--r-- | REORG.TODO/sysdeps/alpha/hp-timing.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/alpha/hp-timing.h b/REORG.TODO/sysdeps/alpha/hp-timing.h new file mode 100644 index 0000000000..84380f34a4 --- /dev/null +++ b/REORG.TODO/sysdeps/alpha/hp-timing.h @@ -0,0 +1,46 @@ +/* High precision, low overhead timing functions. Alpha version. + Copyright (C) 2001-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson <rth@redhat.com>, 2001. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _HP_TIMING_H +#define _HP_TIMING_H 1 + +/* We always have the timestamp register, but it's got only a 4 second + range. Use it for ld.so profiling only. */ +#define HP_TIMING_AVAIL (0) +#define HP_SMALL_TIMING_AVAIL (1) + +/* We indeed have inlined functions. */ +#define HP_TIMING_INLINE (1) + +/* We use 32 bit values for the times. */ +typedef unsigned int hp_timing_t; + +/* The "rpcc" instruction returns a 32-bit counting half and a 32-bit + "virtual cycle counter displacement". Subtracting the two gives us + a virtual cycle count. */ +#define HP_TIMING_NOW(VAR) \ + do { \ + unsigned long int x_; \ + asm volatile ("rpcc %0" : "=r"(x_)); \ + (VAR) = (int) (x_) - (int) (x_ >> 32); \ + } while (0) + +#include <hp-timing-common.h> + +#endif /* hp-timing.h */ |