/*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91 * $FreeBSD$ */ #ifndef _MACHINE_CPU_H_ #define _MACHINE_CPU_H_ /* * Definitions unique to i386 cpu support. */ #include <machine/psl.h> #include <machine/frame.h> #include <machine/segments.h> /* * definitions of cpu-dependent requirements * referenced in generic code */ #undef COPY_SIGCODE /* don't copy sigcode above user stack in exec */ #define cpu_exec(p) /* nothing */ #define cpu_swapin(p) /* nothing */ #define cpu_getstack(td) ((td)->td_frame->tf_rsp) #define cpu_setstack(td, ap) ((td)->td_frame->tf_rsp = (ap)) #define cpu_spinwait() ia32_pause() #define TRAPF_USERMODE(framep) \ (ISPL((framep)->tf_cs) == SEL_UPL) #define TRAPF_PC(framep) ((framep)->tf_rip) #ifdef _KERNEL extern char btext[]; extern char etext[]; void cpu_halt(void); void cpu_reset(void); void fork_trampoline(void); void swi_vm(void *); /* * Return contents of in-cpu fast counter as a sort of "bogo-time" * for random-harvesting purposes. */ static __inline u_int64_t get_cyclecount(void) { return (rdtsc()); } #endif #endif /* !_MACHINE_CPU_H_ */