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2be05b70c9
Previously these were libc functions but were requested to be made into system calls for atomicity and to coalesce what might be two entrances into the kernel (signal mask setting and floating point trap) into one. A few style nits and comments from bde are also included. Tested on alpha by: gallatin
160 lines
5.8 KiB
C
160 lines
5.8 KiB
C
/* $FreeBSD$ */
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/* From: NetBSD: cpu.h,v 1.18 1997/09/23 23:17:49 mjacob Exp */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1982, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: cpu.h 1.16 91/03/25$
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*
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* @(#)cpu.h 8.4 (Berkeley) 1/5/94
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*/
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#ifndef _ALPHA_CPU_H_
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#define _ALPHA_CPU_H_
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/*
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* Exported definitions unique to Alpha cpu support.
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*/
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#include <machine/frame.h>
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#define cpu_getstack(td) (alpha_pal_rdusp())
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/*
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* Arguments to hardclock and gatherstats encapsulate the previous
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* machine state in an opaque clockframe. One the Alpha, we use
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* what we push on an interrupt (a trapframe).
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*/
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struct clockframe {
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struct trapframe cf_tf;
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};
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#define TRAPF_USERMODE(framep) \
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(((framep)->tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0)
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#define TRAPF_PC(framep) ((framep)->tf_regs[FRAME_PC])
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#define CLKF_USERMODE(framep) TRAPF_USERMODE(&(framep)->cf_tf)
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#define CLKF_PC(framep) TRAPF_PC(&(framep)->cf_tf)
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/*
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* CTL_MACHDEP definitions.
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*/
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#define CPU_CONSDEV 1 /* dev_t: console terminal device */
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#define CPU_ROOT_DEVICE 2 /* string: root device name */
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#define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */
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#define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */
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#define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */
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#define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */
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#define CPU_ADJKERNTZ 7 /* int: timezone offset (seconds) */
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#define CPU_DISRTCSET 8 /* int: disable resettodr() call */
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#define CPU_WALLCLOCK 9 /* int: indicates wall CMOS clock */
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#define CPU_MAXID 10 /* valid machdep IDs */
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#define CTL_MACHDEP_NAMES { \
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{ 0, 0 }, \
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{ "console_device", CTLTYPE_STRUCT }, \
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{ "root_device", CTLTYPE_STRING }, \
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{ "unaligned_print", CTLTYPE_INT }, \
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{ "unaligned_fix", CTLTYPE_INT }, \
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{ "unaligned_sigbus", CTLTYPE_INT }, \
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{ "booted_kernel", CTLTYPE_STRING }, \
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{ "adjkerntz", CTLTYPE_INT }, \
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{ "disable_rtc_set", CTLTYPE_INT }, \
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{ "wall_cmos_clock", CTLTYPE_INT }, \
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}
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#ifdef _KERNEL
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struct pcb;
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struct thread;
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struct reg;
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struct rpb;
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struct trapframe;
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extern struct rpb *hwrpb;
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extern volatile int mc_expected, mc_received;
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void XentArith(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
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void XentIF(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
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void XentInt(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
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void XentMM(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
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void XentRestart(void); /* MAGIC */
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void XentSys(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
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void XentUna(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
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void alpha_init(u_long, u_long, u_long, u_long, u_long);
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void alpha_fpstate_check(struct thread *td);
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void alpha_fpstate_drop(struct thread *td);
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void alpha_fpstate_save(struct thread *td, int write);
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void alpha_fpstate_switch(struct thread *td);
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int alpha_pa_access(u_long);
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int badaddr (void *, size_t);
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int badaddr_read(void *, size_t, void *);
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u_int64_t console_restart(u_int64_t, u_int64_t, u_int64_t);
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void dumpconf(void);
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void exception_return(void); /* MAGIC */
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void frametoreg(struct trapframe *, struct reg *);
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long fswintrberr(void); /* MAGIC */
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void init_prom_interface(struct rpb*);
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void interrupt(unsigned long, unsigned long, unsigned long,
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struct trapframe *);
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void machine_check(unsigned long, struct trapframe *, unsigned long,
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unsigned long);
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u_int64_t hwrpb_checksum(void);
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void hwrpb_restart_setup(void);
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void regdump(struct trapframe *);
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void regtoframe(struct reg *, struct trapframe *);
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void savectx(struct pcb *);
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void set_iointr(void (*)(void *, unsigned long));
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void switch_exit(struct thread *); /* MAGIC */
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void fork_trampoline(void); /* MAGIC */
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void syscall(u_int64_t, struct trapframe *);
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void trap(unsigned long, unsigned long, unsigned long, unsigned long,
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struct trapframe *);
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/*
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* Return contents of in-cpu fast counter as a sort of "bogo-time"
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* for non-critical timing.
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*/
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static __inline u_int64_t
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get_cyclecount(void)
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{
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return (alpha_rpcc());
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}
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#endif /* _KERNEL */
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#endif /* _ALPHA_CPU_H_ */
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