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Diffstat (limited to 'libs/ardour/ardour/cycles.h')
| -rw-r--r-- | libs/ardour/ardour/cycles.h | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/libs/ardour/ardour/cycles.h b/libs/ardour/ardour/cycles.h deleted file mode 100644 index 0d1ac154dd..0000000000 --- a/libs/ardour/ardour/cycles.h +++ /dev/null @@ -1,221 +0,0 @@ -/* - Copyright (C) 2001 Paul Davis - Code derived from various headers from the Linux kernel - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - -*/ - -#ifndef __ardour_cycles_h__ -#define __ardour_cycles_h__ - -#include <stdint.h> - -#if defined(__i386__) || defined(__x86_64__) - -/* - * Standard way to access the cycle counter on i586+ CPUs. - * Currently only used on SMP. - * - * If you really have a SMP machine with i486 chips or older, - * compile for that, and this will just always return zero. - * That's ok, it just means that the nicer scheduling heuristics - * won't work for you. - * - * We only use the low 32 bits, and we'd simply better make sure - * that we reschedule before that wraps. Scheduling at least every - * four billion cycles just basically sounds like a good idea, - * regardless of how fast the machine is. - */ -typedef uint64_t cycles_t; - -extern cycles_t cacheflush_time; - -#define rdtscll(val) \ - __asm__ __volatile__("rdtsc" : "=A" (val)) - -static inline cycles_t get_cycles (void) -{ - uint32_t long ret; - - rdtscll(ret); - return ret; -} - -#elif defined(__powerpc__) - -#define CPU_FTR_601 0x00000100 - -typedef uint32_t cycles_t; - -/* - * For the "cycle" counter we use the timebase lower half. - * Currently only used on SMP. - */ - -extern cycles_t cacheflush_time; - -static inline cycles_t get_cycles(void) -{ - cycles_t ret = 0; - - __asm__ __volatile__( - "98: mftb %0\n" - "99:\n" - ".section __ftr_fixup,\"a\"\n" - " .long %1\n" - " .long 0\n" - " .long 98b\n" - " .long 99b\n" - ".previous" - : "=r" (ret) : "i" (CPU_FTR_601)); - return ret; -} - -#elif defined(__ia64__) -/* ia64 */ - -typedef uint32_t cycles_t; -static inline cycles_t -get_cycles (void) -{ - cycles_t ret; - __asm__ __volatile__ ("mov %0=ar.itc" : "=r"(ret)); - return ret; -} - -#elif defined(__alpha__) -/* alpha */ - -/* - * Standard way to access the cycle counter. - * Currently only used on SMP for scheduling. - * - * Only the low 32 bits are available as a continuously counting entity. - * But this only means we'll force a reschedule every 8 seconds or so, - * which isn't an evil thing. - */ - -typedef uint32_t cycles_t; -static inline cycles_t get_cycles (void) -{ - cycles_t ret; - __asm__ __volatile__ ("rpcc %0" : "=r"(ret)); - return ret; -} - -#elif defined(__s390__) -/* s390 */ - -typedef uint32_t long cycles_t; -static inline cycles_t get_cycles(void) -{ - cycles_t cycles; - __asm__("stck 0(%0)" : : "a" (&(cycles)) : "memory", "cc"); - return cycles >> 2; -} - -#elif defined(__hppa__) -/* hppa/parisc */ - -#define mfctl(reg) ({ \ - uint32_t cr; \ - __asm__ __volatile__( \ - "mfctl " #reg ",%0" : \ - "=r" (cr) \ - ); \ - cr; \ -}) - -typedef uint32_t cycles_t; -static inline cycles_t get_cycles (void) -{ - return mfctl(16); -} - -#elif defined(__mips__) -/* mips/mipsel */ - -/* - * Standard way to access the cycle counter. - * Currently only used on SMP for scheduling. - * - * Only the low 32 bits are available as a continuously counting entity. - * But this only means we'll force a reschedule every 8 seconds or so, - * which isn't an evil thing. - * - * We know that all SMP capable CPUs have cycle counters. - */ - -#define __read_32bit_c0_register(source, sel) \ -({ int __res; \ - if (sel == 0) \ - __asm__ __volatile__( \ - "mfc0\t%0, " #source "\n\t" \ - : "=r" (__res)); \ - else \ - __asm__ __volatile__( \ - ".set\tmips32\n\t" \ - "mfc0\t%0, " #source ", " #sel "\n\t" \ - ".set\tmips0\n\t" \ - : "=r" (__res)); \ - __res; \ -}) - -/* #define CP0_COUNT $9 */ -#define read_c0_count() __read_32bit_c0_register($9, 0) - -typedef uint32_t cycles_t; -static inline cycles_t get_cycles (void) -{ - return read_c0_count(); -} - -/* begin mach */ -#elif defined(__APPLE__) - -#include <CoreAudio/HostTime.h> - -typedef UInt64 cycles_t; -static inline cycles_t get_cycles (void) -{ - UInt64 time = AudioGetCurrentHostTime(); - return AudioConvertHostTimeToNanos(time); -} -/* end mach */ - -#else - -/* debian: sparc, arm, m68k */ - -#warning You are compiling libardour on a platform for which ardour/cycles.h needs work - -#include <sys/time.h> - -typedef long cycles_t; - -extern cycles_t cacheflush_time; - -static inline cycles_t get_cycles(void) -{ - struct timeval tv; - gettimeofday (&tv, NULL); - - return tv.tv_usec; -} - -#endif - -#endif /* __ardour_cycles_h__ */ |