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Diffstat (limited to 'sys/amd64/include/cpu.h')
| -rw-r--r-- | sys/amd64/include/cpu.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/sys/amd64/include/cpu.h b/sys/amd64/include/cpu.h new file mode 100644 index 0000000..583d76c --- /dev/null +++ b/sys/amd64/include/cpu.h @@ -0,0 +1,108 @@ +/*- + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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. + * + * @(#)cpu.h 5.4 (Berkeley) 5/9/91 + */ + +/* + * Definitions unique to i386 cpu support. + */ +#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 */ + +/* + * function vs. inline configuration; + * these are defined to get generic functions + * rather than inline or machine-dependent implementations + */ +#define NEED_MINMAX /* need {,i,l,ul}{min,max} functions */ +#define NEED_FFS /* need ffs function */ +#define NEED_BCMP /* need bcmp function */ +#define NEED_STRLEN /* need strlen function */ + +#define cpu_exec(p) /* nothing */ + +/* + * Arguments to hardclock, softclock and gatherstats + * encapsulate the previous machine state in an opaque + * clockframe; for now, use generic intrframe. + */ +typedef struct intrframe clockframe; + +#define CLKF_USERMODE(framep) (ISPL((framep)->if_cs) == SEL_UPL) +#define CLKF_BASEPRI(framep) ((framep)->if_ppl == 0) +#define CLKF_PC(framep) ((framep)->if_eip) + +#define resettodr() /* no todr to set */ + +/* + * Preempt the current process if in interrupt from user mode, + * or after the current trap/syscall if in system mode. + */ +#define need_resched() { want_resched++; aston(); } + +/* + * Give a profiling tick to the current process from the softclock + * interrupt. On tahoe, request an ast to send us through trap(), + * marking the proc as needing a profiling tick. + */ +#define profile_tick(p, framep) { (p)->p_flag |= SOWEUPC; aston(); } + +/* + * Notify the current process (p) that it has a signal pending, + * process as soon as possible. + */ +#define signotify(p) aston() + +#define aston() (astpending++) + +int astpending; /* need to trap before returning to user mode */ +int want_resched; /* resched() was called */ + +/* + * Kinds of processor + */ + +#define CPU_386SX 0 +#define CPU_386 1 +#define CPU_486SX 2 +#define CPU_486 3 +#define CPU_586 4 |
