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)
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/*-
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* Copyright (c) 2001 Jake Burkholder.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#ifndef _MACHINE_FRAME_H_
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#define _MACHINE_FRAME_H_
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#define RW_SHIFT 7
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#define SPOFF 2047
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#define BIAS SPOFF /* XXX - open/netbsd compat */
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/*
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* NOTE: keep this structure in sync with struct reg and struct mcontext.
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*/
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struct trapframe {
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uint64_t tf_global[8];
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uint64_t tf_out[8];
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uint64_t tf_fprs;
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uint64_t tf_fsr;
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uint64_t tf_gsr;
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uint64_t tf_level;
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uint64_t tf_pil;
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uint64_t tf_sfar;
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uint64_t tf_sfsr;
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uint64_t tf_tar;
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uint64_t tf_tnpc;
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uint64_t tf_tpc;
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uint64_t tf_tstate;
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uint64_t tf_type;
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uint64_t tf_y;
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uint64_t tf_wstate;
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uint64_t tf_pad[2];
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};
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#define tf_sp tf_out[6]
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#define TF_DONE(tf) do { \
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tf->tf_tpc = tf->tf_tnpc; \
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tf->tf_tnpc += 4; \
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} while (0)
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struct frame {
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u_long fr_local[8];
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u_long fr_in[8];
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u_long fr_pad[8];
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};
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#define fr_arg fr_in
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#define fr_fp fr_in[6]
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#define fr_pc fr_in[7]
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#define v9next_frame(fp) ((struct frame *)(fp->fr_fp + BIAS))
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/*
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* Frame used for pcb_rw.
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*/
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struct rwindow {
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u_long rw_local[8];
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u_long rw_in[8];
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};
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struct thread;
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int rwindow_save(struct thread *td);
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int rwindow_load(struct thread *td, struct trapframe *tf, int n);
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#endif /* !_MACHINE_FRAME_H_ */
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