2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
154 lines
4.7 KiB
C
154 lines
4.7 KiB
C
/* $NetBSD: gmon.h,v 1.9 2006/10/04 14:22:58 christos Exp $ */
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/*-
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* Copyright (c) 1982, 1986, 1992, 1993
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* The Regents of the University of California. 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. 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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* @(#)gmon.h 8.2 (Berkeley) 1/4/94
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*/
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#ifndef _SYS_GMON_H_
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#define _SYS_GMON_H_
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#include <machine/profile.h>
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/*
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* Structure prepended to gmon.out profiling data file.
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*/
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struct gmonhdr {
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u_long lpc; /* base pc address of sample buffer */
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u_long hpc; /* max pc address of sampled buffer */
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int ncnt; /* size of sample buffer (plus this header) */
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int version; /* version number */
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int profrate; /* profiling clock rate */
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int spare[3]; /* reserved */
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};
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#define GMONVERSION 0x00051879
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/*
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* histogram counters are unsigned shorts (according to the kernel).
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*/
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#define HISTCOUNTER unsigned short
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/*
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* fraction of text space to allocate for histogram counters here, 1/2
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*/
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#ifndef HISTFRACTION
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#define HISTFRACTION 2
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#endif /* HISTFRACTION */
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/*
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* Fraction of text space to allocate for from hash buckets.
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* The value of HASHFRACTION is based on the minimum number of bytes
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* of separation between two subroutine call points in the object code.
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* Given MIN_SUBR_SEPARATION bytes of separation the value of
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* HASHFRACTION is calculated as:
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*
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* HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
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*
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* For example, on the VAX, the shortest two call sequence is:
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*
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* calls $0,(r0)
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* calls $0,(r0)
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*
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* which is separated by only three bytes, thus HASHFRACTION is
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* calculated as:
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*
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* HASHFRACTION = 3 / (2 * 2 - 1) = 1
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*
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* Note that the division above rounds down, thus if MIN_SUBR_FRACTION
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* is less than three, this algorithm will not work!
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*
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* In practice, however, call instructions are rarely at a minimal
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* distance. Hence, we will define HASHFRACTION to be 2 across all
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* architectures. This saves a reasonable amount of space for
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* profiling data structures without (in practice) sacrificing
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* any granularity.
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*/
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#define HASHFRACTION 2
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/*
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* percent of text space to allocate for tostructs with a minimum.
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*/
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#define ARCDENSITY 2
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#define MINARCS 50
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#define MAXARCS ((1 << (8 * sizeof(HISTCOUNTER))) - 2)
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struct tostruct {
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u_long selfpc;
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long count;
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u_short link;
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u_short pad;
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};
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/*
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* a raw arc, with pointers to the calling site and
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* the called site and a count.
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*/
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struct rawarc {
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u_long raw_frompc;
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u_long raw_selfpc;
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long raw_count;
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};
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/*
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* The profiling data structures are housed in this structure.
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*/
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struct gmonparam {
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int state;
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u_short *kcount;
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u_long kcountsize;
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u_short *froms;
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u_long fromssize;
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struct tostruct *tos;
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u_long tossize;
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long tolimit;
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u_long lowpc;
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u_long highpc;
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u_long textsize;
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u_long hashfraction;
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};
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extern struct gmonparam _gmonparam;
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/*
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* Possible states of profiling.
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*/
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#define GMON_PROF_ON 0
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#define GMON_PROF_BUSY 1
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#define GMON_PROF_ERROR 2
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#define GMON_PROF_OFF 3
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/*
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* Sysctl definitions for extracting profiling information from the kernel.
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*/
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#define GPROF_STATE 0 /* int: profiling enabling variable */
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#define GPROF_COUNT 1 /* struct: profile tick count buffer */
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#define GPROF_FROMS 2 /* struct: from location hash bucket */
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#define GPROF_TOS 3 /* struct: destination/count structure */
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#define GPROF_GMONPARAM 4 /* struct: profiling parameters (see above) */
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#endif /* !_SYS_GMON_H_ */
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