| /*- |
| * 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 _BSD_MACHINE_CPU_H_ |
| #define _BSD_MACHINE_CPU_H_ |
| |
| /* |
| * Definitions unique to i386 cpu support. |
| */ |
| #include <machine/bsd_psl.h> |
| #include <machine/bsd_frame.h> |
| #include <machine/bsd_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 _FREEBSD_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 /* !_BSD_MACHINE_CPU_H_ */ |
