b439e431bf
passing a pointer to an opaque clockframe structure and requiring the MD code to supply CLKF_FOO() macros to extract needed values out of the opaque structure, just pass the needed values directly. In practice this means passing the pair (usermode, pc) to hardclock() and profclock() and passing the boolean (usermode) to hardclock_cpu() and hardclock_process(). Other details: - Axe clockframe and CLKF_FOO() macros on all architectures. Basically, all the archs were taking a trapframe and converting it into a clockframe one way or another. Now they can just extract the PC and usermode values directly out of the trapframe and pass it to fooclock(). - Renamed hardclock_process() to hardclock_cpu() as the latter is more accurate. - On Alpha, we now run profclock() at hz (profhz == hz) rather than at the slower stathz. - On Alpha, for the TurboLaser machines that don't have an 8254 timecounter, call hardclock() directly. This removes an extra conditional check from every clock interrupt on Alpha on the BSP. There is probably room for even further pruning here by changing Alpha to use the simplified timecounter we use on x86 with the lapic timer since we don't get interrupts from the 8254 on Alpha anyway. - On x86, clkintr() shouldn't ever be called now unless using_lapic_timer is false, so add a KASSERT() to that affect and remove a condition to slightly optimize the non-lapic case. - Change prototypeof arm_handler_execute() so that it's first arg is a trapframe pointer rather than a void pointer for clarity. - Use KCOUNT macro in profclock() to lookup the kernel profiling bucket. Tested on: alpha, amd64, arm, i386, ia64, sparc64 Reviewed by: bde (mostly)
85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
/*-
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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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 TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: frame.h,v 1.2 1999/01/10 10:13:15 tsubai Exp $
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* $FreeBSD$
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*/
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#ifndef _MACHINE_FRAME_H_
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#define _MACHINE_FRAME_H_
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#include <sys/types.h>
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/*
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* We have to save all registers on every trap, because
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* 1. user could attach this process every time
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* 2. we must be able to restore all user registers in case of fork
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* Actually, we do not save the fp registers on trap, since
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* these are not used by the kernel. They are saved only when switching
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* between processes using the FPU.
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*
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* Change ordering to cluster together these register_t's. XXX
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*/
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struct trapframe {
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register_t fixreg[32];
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register_t lr;
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int cr;
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int xer;
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register_t ctr;
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register_t srr0;
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register_t srr1;
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register_t dar; /* dar & dsisr are only filled on a DSI trap */
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int dsisr;
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int exc;
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};
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/*
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* This is to ensure alignment of the stackpointer
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*/
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#define FRAMELEN roundup(sizeof(struct trapframe) + 8, 16)
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#define trapframe(td) ((td)->td_frame)
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/*
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* Call frame for PowerPC used during fork.
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*/
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struct callframe {
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register_t cf_dummy_fp; /* dummy frame pointer */
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register_t cf_lr; /* space for link register save */
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register_t cf_func;
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register_t cf_arg0;
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register_t cf_arg1;
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};
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/* Definitions for syscalls */
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#define FIRSTARG 3 /* first arg in reg 3 */
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#define NARGREG 8 /* 8 args in regs */
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#define MOREARGS(sp) ((caddr_t)((int)(sp) + 8)) /* more args go here */
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#endif /* _MACHINE_FRAME_H_ */
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