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root |
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/* |
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* This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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* |
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* Copyright (©) 2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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* |
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* Deliantra 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 3 of the License, or |
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* (at your option) any later version. |
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* |
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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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* |
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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, see <http://www.gnu.org/licenses/>. |
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* |
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* The authors can be reached via e-mail to <support@deliantra.net> |
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*/ |
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// This file is only included with -DDEVEL, and is only part |
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// of the distributon for completeness, it is not supposed to |
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// be useful outside the developers machines. |
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#ifndef DEVEL_H |
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#define DEVEL_H |
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// used for benchmarking (x86/amd64-specific) |
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root |
1.3 |
#ifdef DEVEL64 |
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typedef uint64_t cstamp; |
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#else |
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typedef uint32_t cstamp; |
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#endif |
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#if defined(__i386__) || defined(__x86_64__) |
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root |
1.1 |
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static inline cstamp |
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stamp (void) |
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{ |
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root |
1.3 |
uint32_t l, h; |
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asm volatile ("rdtsc" : "=a" (l), "=d" (h)); |
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#ifdef DEVEL64 |
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return ((cstamp)h << 32) | l; |
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#else |
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return l; |
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#endif |
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root |
1.1 |
} |
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root |
1.3 |
#elif defined(__powerpc__) |
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static inline cstamp |
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stamp (void) |
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{ |
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unsigned uint32_t u, l, tmp; |
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asm volatile ( |
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"0: \n" |
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"\tmftbu %0 \n" |
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"\tmftb %1 \n" |
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"\tmftbu %2 \n" |
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"\tcmpw %2,%0\n" |
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"\tbne 0b \n" |
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: "=r" (h), "=r" (l), "=r" (tmp) |
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); |
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#ifdef DEVEL64 |
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return ((cstamp)h << 32) | l; |
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#else |
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return l; |
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#endif |
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} |
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#endif |
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root |
1.1 |
static inline cstamp |
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measure (cstamp t) |
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{ |
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root |
1.2 |
return stamp () - t; |
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root |
1.1 |
} |
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// cstamp s = stamp (); |
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// s = measure (s); |
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#endif |
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