Haven't tested these for NetBSD, but they work in SunOS.
This commit is contained in:
pk
parent
4406f07dc2
commit
c677f4482a
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@ -0,0 +1,35 @@
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# from: @(#)Makefile 5.5 (Berkeley) 5/21/91
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# $Id: Makefile,v 1.1 1993/10/16 22:02:58 pk Exp $
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CFLAGS+= -DLIBC_SCCS
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OBJS= crt0.o gcrt0.o
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CLEANFILES+= gmon.o moncrt0.o core a.out
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all: ${OBJS}
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crt0.o: crt0.c
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${CC} ${CFLAGS} -c -DCRT0 ${.ALLSRC}
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${LD} -x -r ${.TARGET}
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mv a.out ${.TARGET}
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moncrt0.o: crt0.c
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${CC} ${CFLAGS} -c -DMCRT0 ${.ALLSRC} -o ${.TARGET}
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${LD} -x -r ${.TARGET}
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mv a.out ${.TARGET}
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gcrt0.o: moncrt0.o gmon.o
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${LD} -x -r -o ${.TARGET} moncrt0.o gmon.o
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gmon.o: gmon.c gmon.h
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${CC} ${CFLAGS} -c ${.IMPSRC}
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${LD} -x -r ${.TARGET}
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mv a.out ${.TARGET}
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install:
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install -d -o ${BINOWN} -g ${BINGRP} -m 0755 ${DESTDIR}/usr/lib
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install ${COPY} -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
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${DESTDIR}/usr/lib
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depend lint tags:
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.include <bsd.prog.mk>
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@ -0,0 +1,455 @@
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/*
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* Copyright (c) 1993 Paul Kranenburg
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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 Paul Kranenburg.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: crt0.c,v 1.1 1993/10/16 22:02:59 pk Exp $
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "%W% (Erasmus) %G%";
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#endif /* LIBC_SCCS and not lint */
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extern void exit();
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int _callmain();
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#include <sys/param.h>
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#ifdef DYNAMIC
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#include <sys/types.h>
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#include <sys/syscall.h>
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#include <a.out.h>
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#ifndef N_GETMAGIC
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#define N_GETMAGIC(x) ((x).a_magic)
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#endif
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#ifndef N_BSSADDR
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#define N_BSSADDR(x) (N_DATADDR(x)+(x).a_data)
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#endif
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#include <sys/mman.h>
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#ifdef sun
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#define MAP_COPY MAP_PRIVATE
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#define MAP_FILE 0
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#define MAP_ANON 0
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#endif
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#include <link.h>
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extern struct link_dynamic _DYNAMIC;
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static void __do_dynamic_link ();
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static char *_getenv();
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static int _strncmp();
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#ifdef sparc
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static __call();
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#endif
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#ifdef sun
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#define LDSO "/usr/lib/ld.so"
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#endif
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#ifdef BSD
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#define LDSO "/usr/libexec/ld.so"
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#endif
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#endif /* DYNAMIC */
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static char *_strrchr();
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char **environ;
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#ifdef BSD
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extern unsigned char etext;
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extern unsigned char eprol asm ("eprol");
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extern start() asm("start");
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extern mcount() asm ("mcount");
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int errno;
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static char empty[1];
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char *__progname = empty;
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#endif
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/*
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* We need these system calls, but can't use library stubs
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*/
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#define _exit(v) __syscall(SYS_exit, (v))
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#define open(name, f, m) __syscall(SYS_open, (name), (f), (m))
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#define close(fd) __syscall(SYS_close, (fd))
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#define read(fd, s, n) __syscall(SYS_read, (fd), (s), (n))
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#define write(fd, s, n) __syscall(SYS_write, (fd), (s), (n))
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#define dup(fd) __syscall(SYS_dup, (fd))
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#define dup2(fd, fdnew) __syscall(SYS_dup2, (fd), (fdnew))
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#ifdef sun
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#define mmap(addr, len, prot, flags, fd, off) \
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__syscall(SYS_mmap, (addr), (len), (prot), _MAP_NEW|(flags), (fd), (off))
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#else
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#define mmap(addr, len, prot, flags, fd, off) \
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__syscall(SYS_mmap, (addr), (len), (prot), (flags), (fd), (off))
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#endif
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#define _FATAL(str) \
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write(2, str, sizeof(str)), \
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_exit(1);
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#ifdef sparc
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asm (" .global start");
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asm (" .text");
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asm (" start:");
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/* Set up `argc', `argv', and `envp' into local registers (from GNU Emacs). */
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asm (" mov 0, %fp");
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asm (" ld [%sp + 64], %l0"); /* argc */
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asm (" add %sp, 68, %l1"); /* argv */
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asm (" sll %l0, 2, %l2"); /**/
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asm (" add %l2, 4, %l2"); /* envp = argv + (argc << 2) + 4 */
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asm (" add %l1, %l2, %l2"); /**/
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asm (" sethi %hi(_environ), %l3");
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asm (" st %l2, [%l3+%lo(_environ)]"); /* *environ = l2 */
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/* Finish diddling with stack. */
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asm (" andn %sp, 7, %sp");
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asm (" sub %sp, 24, %sp");
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#ifdef DYNAMIC
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/* Resolve symbols in dynamic libraries */
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asm (" call ___do_dynamic_link");
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asm (" nop");
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#endif
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/* From here, all symbols should have been resolved, so we can use libc */
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#ifdef MCRT0
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asm (" call ___do_mcrt");
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asm (" nop");
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#endif
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/* Stay Sun compatible (currently (SunOS 4.1.2) does nothing on sun4) */
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asm (" call start_float");
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asm (" nop");
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/* Move `argc', `argv', and `envp' from locals to parameters for `main'. */
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asm (" mov %l0,%o0");
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asm (" mov %l1,%o1");
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asm ("__callmain:"); /* Defined for the benefit of debuggers */
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asm (" call _main");
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asm (" mov %l2,%o2");
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asm (" call _exit");
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asm (" nop");
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#ifdef MCRT0
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static void
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__do_mcrt ()
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{
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extern unsigned char eprol, etext;
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extern void _mcleanup();
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on_exit(_mcleanup, 0);
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monstartup(&eprol, &etext);
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return;
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}
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#endif
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#endif /* sparc */
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#ifdef i386
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start()
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{
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struct kframe {
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int kargc;
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char *kargv[1]; /* size depends on kargc */
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char kargstr[1]; /* size varies */
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char kenvstr[1]; /* size varies */
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};
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/*
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* ALL REGISTER VARIABLES!!!
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*/
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register struct kframe *kfp;
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register char **targv;
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register char **argv;
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extern void _mcleanup();
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#ifdef DYNAMIC
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volatile caddr_t x;
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#endif
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#ifdef lint
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kfp = 0;
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initcode = initcode = 0;
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#else /* not lint */
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/* just above the saved frame pointer */
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asm ("lea 4(%%ebp), %0" : "=r" (kfp) );
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#endif /* not lint */
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for (argv = targv = &kfp->kargv[0]; *targv++; /* void */)
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/* void */ ;
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if (targv >= (char **)(*argv))
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--targv;
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environ = targv;
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#ifdef DYNAMIC
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#ifdef stupid_gcc
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if (&_DYNAMIC)
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__do_dynamic_link();
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#else
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x = (caddr_t)&_DYNAMIC;
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if (x)
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__do_dynamic_link();
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#endif
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#endif /* DYNAMIC */
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asm("eprol:");
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#ifdef MCRT0
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atexit(_mcleanup);
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monstartup(&eprol, &etext);
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#endif MCRT0
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#if 0
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errno = 0;
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#endif
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if (argv[0])
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if ((__progname = _strrchr(argv[0], '/')) == NULL)
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__progname = argv[0];
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else
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++__progname;
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asm ("__callmain:"); /* Defined for the benefit of debuggers */
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exit(main(kfp->kargc, argv, environ));
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}
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#endif /* i386 */
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#ifdef DYNAMIC
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static void
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__do_dynamic_link ()
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{
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struct crt_ldso crt;
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struct exec hdr;
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char *ldso;
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int dupzfd;
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void (*entry)();
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/* ld(1) convention: if DYNAMIC = 0 then statically linked */
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if (&_DYNAMIC == (struct link_dynamic *)0)
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return;
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/* Provision for alternate ld.so - security risk! */
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if (!(ldso = _getenv("LDSO")))
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ldso = LDSO;
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crt.crt_ldfd = open(ldso, 0, 0);
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if (crt.crt_ldfd == -1) {
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_FATAL("No ld.so\n");
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}
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/* Read LDSO exec header */
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if (read(crt.crt_ldfd, &hdr, sizeof hdr) < sizeof hdr) {
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_FATAL("Failure reading ld.so\n");
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}
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if (N_GETMAGIC(hdr) != ZMAGIC) {
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_FATAL("Bad magic: ld.so\n");
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}
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#ifdef sun
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/* Get bucket of zeroes */
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crt.crt_dzfd = open("/dev/zero", 0, 0);
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if (crt.crt_dzfd == -1) {
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_FATAL("No /dev/zero\n");
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||||
}
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||||
#endif
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||||
#ifdef BSD
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||||
/* We use MAP_ANON */
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crt.crt_dzfd = -1;
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#endif
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||||
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||||
#if defined(sun) && defined(DUPZFD)
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if ((dupzfd = dup(crt.crt_dzfd)) < 0) {
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||||
_FATAL("Cannot dup /dev/zero\n");
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||||
}
|
||||
#endif
|
||||
|
||||
/* Map in ld.so */
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||||
crt.crt_ba = mmap(0, hdr.a_text+hdr.a_data+hdr.a_bss,
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PROT_READ|PROT_EXEC,
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MAP_FILE|MAP_COPY,
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crt.crt_ldfd, N_TXTOFF(hdr));
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||||
if (crt.crt_ba == -1) {
|
||||
_FATAL("Cannot map ld.so\n");
|
||||
}
|
||||
|
||||
#ifdef BSD
|
||||
/* !!!
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||||
* This is gross, ld.so is a ZMAGIC a.out, but has `sizeof(hdr)' for
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||||
* an entry point and not at PAGSIZ as the N_*ADDR macros assume.
|
||||
*/
|
||||
#undef N_DATADDR
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||||
#undef N_BSSADDR
|
||||
#define N_DATADDR(x) ((x).a_text)
|
||||
#define N_BSSADDR(x) ((x).a_text + (x).a_data)
|
||||
#endif
|
||||
|
||||
/* Map in data segment of ld.so writable */
|
||||
if (mmap(crt.crt_ba+N_DATADDR(hdr), hdr.a_data,
|
||||
PROT_READ|PROT_EXEC|PROT_WRITE,
|
||||
MAP_FIXED|MAP_FILE|MAP_COPY,
|
||||
crt.crt_ldfd, N_DATOFF(hdr)) == -1) {
|
||||
_FATAL("Cannot map ld.so\n");
|
||||
}
|
||||
|
||||
/* Map bss segment of ld.so zero */
|
||||
if (hdr.a_bss && mmap(crt.crt_ba+N_BSSADDR(hdr), hdr.a_bss,
|
||||
PROT_READ|PROT_EXEC|PROT_WRITE,
|
||||
MAP_FIXED|MAP_ANON|MAP_COPY,
|
||||
crt.crt_dzfd, 0) == -1) {
|
||||
_FATAL("Cannot map ld.so\n");
|
||||
}
|
||||
|
||||
crt.crt_dp = &_DYNAMIC;
|
||||
crt.crt_ep = environ;
|
||||
crt.crt_bp = (caddr_t)_callmain;
|
||||
|
||||
#if defined(sparc) && defined(SUN_COMPAT)
|
||||
/* Call Sun's ld.so entry point: version 1, offset crt */
|
||||
__call(CRT_VERSION_SUN, &crt, crt.crt_ba + sizeof hdr);
|
||||
#else
|
||||
entry = (void (*)())(crt.crt_ba + sizeof hdr);
|
||||
(*entry)(CRT_VERSION_BSD, &crt);
|
||||
#endif
|
||||
|
||||
#if defined(sun) && defined(DUPZFD)
|
||||
if (dup2(dupzfd, crt.crt_dzfd) < 0) {
|
||||
_FATAL("Cannot dup2 /dev/zero\n");
|
||||
}
|
||||
(void)close(dupzfd);
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
|
||||
#ifdef sparc
|
||||
static
|
||||
__call()
|
||||
{
|
||||
/*
|
||||
* adjust the C generated pointer to the crt struct to the
|
||||
* likings of ld.so, which is an offset relative to its %fp
|
||||
*/
|
||||
#if 0
|
||||
asm("___call:");
|
||||
asm("call %o2");
|
||||
asm("sub %o1, %sp, %o1"); /* adjust parameter */
|
||||
#else Hmmm...
|
||||
asm("mov %i0, %o0");
|
||||
asm("mov %i1, %o1");
|
||||
asm("call %i2");
|
||||
asm("sub %o1, %sp, %o1");
|
||||
/*NOTREACHED, control is transferred directly to our caller */
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Support routines
|
||||
*/
|
||||
|
||||
static int
|
||||
_strncmp(s1, s2, n)
|
||||
register char *s1, *s2;
|
||||
register n;
|
||||
{
|
||||
|
||||
if (n == 0)
|
||||
return (0);
|
||||
do {
|
||||
if (*s1 != *s2++)
|
||||
return (*(unsigned char *)s1 - *(unsigned char *)--s2);
|
||||
if (*s1++ == 0)
|
||||
break;
|
||||
} while (--n != 0);
|
||||
return (0);
|
||||
}
|
||||
|
||||
static char *
|
||||
_getenv(name)
|
||||
register char *name;
|
||||
{
|
||||
extern char **environ;
|
||||
register int len;
|
||||
register char **P, *C;
|
||||
|
||||
for (C = name, len = 0; *C && *C != '='; ++C, ++len);
|
||||
for (P = environ; *P; ++P)
|
||||
if (!_strncmp(*P, name, len))
|
||||
if (*(C = *P + len) == '=') {
|
||||
return(++C);
|
||||
}
|
||||
return (char *)0;
|
||||
}
|
||||
|
||||
#ifdef sparc
|
||||
/* System call entry */
|
||||
asm("___syscall:");
|
||||
asm("clr %g1");
|
||||
asm("ta %g0");
|
||||
asm("bgeu Lsyscallx"); /* good result ? */
|
||||
asm("nop");
|
||||
asm("mov -0x1, %o0"); /* Note: no `errno' */
|
||||
asm("Lsyscallx:");
|
||||
asm("jmp %o7 + 0x8");
|
||||
asm("nop");
|
||||
#endif /* sparc */
|
||||
#ifdef i386
|
||||
asm(" ___syscall:");
|
||||
asm(" popl %ecx");
|
||||
asm(" popl %eax");
|
||||
asm(" pushl %ecx");
|
||||
asm(" .byte 0x9a");
|
||||
asm(" .long 0");
|
||||
asm(" .word 7");
|
||||
asm(" pushl %ecx");
|
||||
asm(" jc 1f");
|
||||
asm(" ret");
|
||||
asm(" 1:");
|
||||
asm(" movl $-1,%eax");
|
||||
asm(" ret");
|
||||
#endif /* i386 */
|
||||
|
||||
#endif /* DYNAMIC */
|
||||
|
||||
static char *
|
||||
_strrchr(p, ch)
|
||||
register char *p, ch;
|
||||
{
|
||||
register char *save;
|
||||
|
||||
for (save = NULL;; ++p) {
|
||||
if (*p == ch)
|
||||
save = (char *)p;
|
||||
if (!*p)
|
||||
return(save);
|
||||
}
|
||||
/* NOTREACHED */
|
||||
}
|
||||
|
||||
#ifdef MCRT0
|
||||
asm (" .text");
|
||||
asm ("_eprol:");
|
||||
#endif
|
||||
|
|
@ -0,0 +1,337 @@
|
|||
/*-
|
||||
* Copyright (c) 1991 The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
static char sccsid[] = "@(#)gmon.c 5.3 (Berkeley) 5/22/91";
|
||||
static char rcsid[] = "$Id: gmon.c,v 1.1 1993/10/16 22:03:00 pk Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
|
||||
#include <unistd.h>
|
||||
|
||||
#ifdef DEBUG
|
||||
#include <stdio.h>
|
||||
#endif
|
||||
|
||||
#include <sys/mman.h>
|
||||
|
||||
#include "gmon.h"
|
||||
|
||||
/*
|
||||
* froms is actually a bunch of unsigned shorts indexing tos
|
||||
*/
|
||||
static int profiling = 3;
|
||||
static unsigned short *froms;
|
||||
static struct tostruct *tos = 0;
|
||||
static long tolimit = 0;
|
||||
static char *s_lowpc = 0;
|
||||
static char *s_highpc = 0;
|
||||
static unsigned long s_textsize = 0;
|
||||
|
||||
static int ssiz;
|
||||
static char *sbuf;
|
||||
static int s_scale;
|
||||
/* see profil(2) where this is describe (incorrectly) */
|
||||
#define SCALE_1_TO_1 0x10000L
|
||||
|
||||
#define MSG "No space for profiling buffer(s)\n"
|
||||
|
||||
monstartup(lowpc, highpc)
|
||||
char *lowpc;
|
||||
char *highpc;
|
||||
{
|
||||
int monsize;
|
||||
char *buffer;
|
||||
register int o;
|
||||
int fdz, len;
|
||||
|
||||
/*
|
||||
* round lowpc and highpc to multiples of the density we're using
|
||||
* so the rest of the scaling (here and in gprof) stays in ints.
|
||||
*/
|
||||
lowpc = (char *)
|
||||
ROUNDDOWN((unsigned)lowpc, HISTFRACTION*sizeof(HISTCOUNTER));
|
||||
s_lowpc = lowpc;
|
||||
highpc = (char *)
|
||||
ROUNDUP((unsigned)highpc, HISTFRACTION*sizeof(HISTCOUNTER));
|
||||
s_highpc = highpc;
|
||||
s_textsize = highpc - lowpc;
|
||||
monsize = (s_textsize / HISTFRACTION) + sizeof(struct phdr);
|
||||
|
||||
tolimit = s_textsize * ARCDENSITY / 100;
|
||||
if ( tolimit < MINARCS ) {
|
||||
tolimit = MINARCS;
|
||||
} else if ( tolimit > 65534 ) {
|
||||
tolimit = 65534;
|
||||
}
|
||||
/*
|
||||
* We use mmap(2) here in stead of sbrk(2), it's the modern times...
|
||||
*/
|
||||
len = ROUNDUP(monsize, 8) + ROUNDUP(s_textsize / HASHFRACTION, 8) +
|
||||
tolimit * sizeof(struct tostruct);
|
||||
|
||||
fdz = open("/dev/zero", 0, 0);
|
||||
buffer = mmap(0, len, PROT_READ|PROT_WRITE, MAP_PRIVATE, fdz, 0);
|
||||
close(fdz);
|
||||
|
||||
if ( buffer == (char *) -1 ) {
|
||||
write( 2 , MSG , sizeof(MSG) );
|
||||
return;
|
||||
}
|
||||
froms = (unsigned short *) ((int)buffer + ROUNDUP(monsize, 8));
|
||||
tos = (struct tostruct *) ((int)froms + ROUNDUP(s_textsize / HASHFRACTION, 8));
|
||||
|
||||
# ifdef DEBUG
|
||||
fprintf( stderr , "[monstartup] sbuf 0x%x ssiz %d froms %#x tos %#x\n",
|
||||
buffer , monsize , froms, tos);
|
||||
fprintf(stderr, " lowpc %#x highpc %#x\n", lowpc, highpc);
|
||||
# endif DEBUG
|
||||
|
||||
|
||||
tos[0].link = 0;
|
||||
sbuf = buffer;
|
||||
ssiz = monsize;
|
||||
( (struct phdr *) buffer ) -> lpc = lowpc;
|
||||
( (struct phdr *) buffer ) -> hpc = highpc;
|
||||
( (struct phdr *) buffer ) -> ncnt = ssiz;
|
||||
monsize -= sizeof(struct phdr);
|
||||
if ( monsize <= 0 )
|
||||
return;
|
||||
o = highpc - lowpc;
|
||||
if( monsize < o )
|
||||
#ifndef hp300
|
||||
s_scale = ( (float) monsize / o ) * SCALE_1_TO_1;
|
||||
#else /* avoid floating point */
|
||||
{
|
||||
int quot = o / monsize;
|
||||
|
||||
if (quot >= 0x10000)
|
||||
s_scale = 1;
|
||||
else if (quot >= 0x100)
|
||||
s_scale = 0x10000 / quot;
|
||||
else if (o >= 0x800000)
|
||||
s_scale = 0x1000000 / (o / (monsize >> 8));
|
||||
else
|
||||
s_scale = 0x1000000 / ((o << 8) / monsize);
|
||||
}
|
||||
#endif
|
||||
else
|
||||
s_scale = SCALE_1_TO_1;
|
||||
moncontrol(1);
|
||||
}
|
||||
|
||||
_mcleanup()
|
||||
{
|
||||
int fd;
|
||||
int fromindex;
|
||||
int endfrom;
|
||||
char *frompc;
|
||||
int toindex;
|
||||
struct rawarc rawarc;
|
||||
|
||||
moncontrol(0);
|
||||
fd = creat( "gmon.out" , 0666 );
|
||||
if ( fd < 0 ) {
|
||||
perror( "mcount: gmon.out" );
|
||||
return;
|
||||
}
|
||||
# ifdef DEBUG
|
||||
fprintf( stderr , "[mcleanup] sbuf 0x%x ssiz %d\n" , sbuf , ssiz );
|
||||
# endif DEBUG
|
||||
write( fd , sbuf , ssiz );
|
||||
endfrom = s_textsize / (HASHFRACTION * sizeof(*froms));
|
||||
for ( fromindex = 0 ; fromindex < endfrom ; fromindex++ ) {
|
||||
if ( froms[fromindex] == 0 ) {
|
||||
continue;
|
||||
}
|
||||
frompc = s_lowpc + (fromindex * HASHFRACTION * sizeof(*froms));
|
||||
for (toindex=froms[fromindex]; toindex!=0; toindex=tos[toindex].link) {
|
||||
# ifdef DEBUG
|
||||
fprintf( stderr ,
|
||||
"[mcleanup] frompc 0x%x selfpc 0x%x count %d\n" ,
|
||||
frompc , tos[toindex].selfpc , tos[toindex].count );
|
||||
# endif DEBUG
|
||||
rawarc.raw_frompc = (unsigned long) frompc;
|
||||
rawarc.raw_selfpc = (unsigned long) tos[toindex].selfpc;
|
||||
rawarc.raw_count = tos[toindex].count;
|
||||
write( fd , &rawarc , sizeof rawarc );
|
||||
}
|
||||
}
|
||||
close( fd );
|
||||
}
|
||||
|
||||
#ifdef sparc
|
||||
asm (" .text"); /* make sure we're in text space */
|
||||
asm (" .global mcount");
|
||||
asm ("mcount:");
|
||||
asm (" add %o7, 8, %o0"); /* selfpc: return addr of mcount */
|
||||
asm (" ba ___mcount");
|
||||
asm (" add %i7, 8, %o1"); /* frompc: return addr of mcount's caller */
|
||||
#endif
|
||||
|
||||
static __mcount(selfpc, frompcindex)
|
||||
register char *selfpc;
|
||||
register unsigned short *frompcindex;
|
||||
{
|
||||
register struct tostruct *top;
|
||||
register struct tostruct *prevtop;
|
||||
register long toindex;
|
||||
|
||||
/*
|
||||
* find the return address for mcount,
|
||||
* and the return address for mcount's caller.
|
||||
*/
|
||||
|
||||
#ifdef sparc
|
||||
/* selfpc, frompcindex are arguments */
|
||||
#endif
|
||||
/*
|
||||
* check that we are profiling
|
||||
* and that we aren't recursively invoked.
|
||||
*/
|
||||
if (profiling) {
|
||||
goto out;
|
||||
}
|
||||
profiling++;
|
||||
/*
|
||||
* check that frompcindex is a reasonable pc value.
|
||||
* for example: signal catchers get called from the stack,
|
||||
* not from text space. too bad.
|
||||
*/
|
||||
frompcindex = (unsigned short *)((long)frompcindex - (long)s_lowpc);
|
||||
if ((unsigned long)frompcindex > s_textsize) {
|
||||
goto done;
|
||||
}
|
||||
frompcindex =
|
||||
&froms[((long)frompcindex) / (HASHFRACTION * sizeof(*froms))];
|
||||
toindex = *frompcindex;
|
||||
if (toindex == 0) {
|
||||
/*
|
||||
* first time traversing this arc
|
||||
*/
|
||||
toindex = ++tos[0].link;
|
||||
if (toindex >= tolimit) {
|
||||
goto overflow;
|
||||
}
|
||||
*frompcindex = toindex;
|
||||
top = &tos[toindex];
|
||||
top->selfpc = selfpc;
|
||||
top->count = 1;
|
||||
top->link = 0;
|
||||
goto done;
|
||||
}
|
||||
top = &tos[toindex];
|
||||
if (top->selfpc == selfpc) {
|
||||
/*
|
||||
* arc at front of chain; usual case.
|
||||
*/
|
||||
top->count++;
|
||||
goto done;
|
||||
}
|
||||
/*
|
||||
* have to go looking down chain for it.
|
||||
* top points to what we are looking at,
|
||||
* prevtop points to previous top.
|
||||
* we know it is not at the head of the chain.
|
||||
*/
|
||||
for (; /* goto done */; ) {
|
||||
if (top->link == 0) {
|
||||
/*
|
||||
* top is end of the chain and none of the chain
|
||||
* had top->selfpc == selfpc.
|
||||
* so we allocate a new tostruct
|
||||
* and link it to the head of the chain.
|
||||
*/
|
||||
toindex = ++tos[0].link;
|
||||
if (toindex >= tolimit) {
|
||||
goto overflow;
|
||||
}
|
||||
top = &tos[toindex];
|
||||
top->selfpc = selfpc;
|
||||
top->count = 1;
|
||||
top->link = *frompcindex;
|
||||
*frompcindex = toindex;
|
||||
goto done;
|
||||
}
|
||||
/*
|
||||
* otherwise, check the next arc on the chain.
|
||||
*/
|
||||
prevtop = top;
|
||||
top = &tos[top->link];
|
||||
if (top->selfpc == selfpc) {
|
||||
/*
|
||||
* there it is.
|
||||
* increment its count
|
||||
* move it to the head of the chain.
|
||||
*/
|
||||
top->count++;
|
||||
toindex = prevtop->link;
|
||||
prevtop->link = top->link;
|
||||
top->link = *frompcindex;
|
||||
*frompcindex = toindex;
|
||||
goto done;
|
||||
}
|
||||
|
||||
}
|
||||
done:
|
||||
profiling--;
|
||||
/* and fall through */
|
||||
out:
|
||||
return; /* normal return restores saved registers */
|
||||
|
||||
overflow:
|
||||
profiling++; /* halt further profiling */
|
||||
# define TOLIMIT "mcount: tos overflow\n"
|
||||
write(2, TOLIMIT, sizeof(TOLIMIT));
|
||||
goto out;
|
||||
}
|
||||
|
||||
/*
|
||||
* Control profiling
|
||||
* profiling is what mcount checks to see if
|
||||
* all the data structures are ready.
|
||||
*/
|
||||
moncontrol(mode)
|
||||
int mode;
|
||||
{
|
||||
if (mode) {
|
||||
/* start */
|
||||
profil(sbuf + sizeof(struct phdr), ssiz - sizeof(struct phdr),
|
||||
(int)s_lowpc, s_scale);
|
||||
profiling = 0;
|
||||
} else {
|
||||
/* stop */
|
||||
profil((char *)0, 0, 0, 0);
|
||||
profiling = 3;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,106 @@
|
|||
/*-
|
||||
* Copyright (c) 1990 The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* from: @(#)gmon.h 5.3 (Berkeley) 5/6/91
|
||||
* $Id: gmon.h,v 1.1 1993/10/16 22:03:01 pk Exp $
|
||||
*/
|
||||
|
||||
struct phdr {
|
||||
char *lpc;
|
||||
char *hpc;
|
||||
int ncnt;
|
||||
};
|
||||
|
||||
/*
|
||||
* histogram counters are unsigned shorts (according to the kernel).
|
||||
*/
|
||||
#define HISTCOUNTER unsigned short
|
||||
|
||||
/*
|
||||
* fraction of text space to allocate for histogram counters
|
||||
* here, 1/2
|
||||
*/
|
||||
#define HISTFRACTION 2
|
||||
|
||||
/*
|
||||
* Fraction of text space to allocate for from hash buckets.
|
||||
* The value of HASHFRACTION is based on the minimum number of bytes
|
||||
* of separation between two subroutine call points in the object code.
|
||||
* Given MIN_SUBR_SEPARATION bytes of separation the value of
|
||||
* HASHFRACTION is calculated as:
|
||||
*
|
||||
* HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
|
||||
*
|
||||
* For the VAX, the shortest two call sequence is:
|
||||
*
|
||||
* calls $0,(r0)
|
||||
* calls $0,(r0)
|
||||
*
|
||||
* which is separated by only three bytes, thus HASHFRACTION is
|
||||
* calculated as:
|
||||
*
|
||||
* HASHFRACTION = 3 / (2 * 2 - 1) = 1
|
||||
*
|
||||
* Note that the division above rounds down, thus if MIN_SUBR_FRACTION
|
||||
* is less than three, this algorithm will not work!
|
||||
*/
|
||||
#define HASHFRACTION 1
|
||||
|
||||
/*
|
||||
* percent of text space to allocate for tostructs
|
||||
* with a minimum.
|
||||
*/
|
||||
#define ARCDENSITY 2
|
||||
#define MINARCS 50
|
||||
|
||||
struct tostruct {
|
||||
char *selfpc;
|
||||
long count;
|
||||
unsigned short link;
|
||||
};
|
||||
|
||||
/*
|
||||
* a raw arc,
|
||||
* with pointers to the calling site and the called site
|
||||
* and a count.
|
||||
*/
|
||||
struct rawarc {
|
||||
unsigned long raw_frompc;
|
||||
unsigned long raw_selfpc;
|
||||
long raw_count;
|
||||
};
|
||||
|
||||
/*
|
||||
* general rounding functions.
|
||||
*/
|
||||
#define ROUNDDOWN(x,y) (((x)/(y))*(y))
|
||||
#define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
|
||||
Loading…
Reference in New Issue