537 lines
12 KiB
C++
537 lines
12 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: logio.cc,v 1.36 2002-11-11 14:10:24 bdenney Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#include "bochs.h"
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#include <assert.h>
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#include "state_file.h"
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// Just for the iofunctions
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int Allocio=0;
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void
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iofunctions::flush(void) {
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if(logfd && magic == MAGIC_LOGNUM) {
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fflush(logfd);
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}
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}
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void
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iofunctions::init(void) {
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// iofunctions methods must not be called before this magic
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// number is set.
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magic=MAGIC_LOGNUM;
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// sets the default logprefix
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strcpy(logprefix,"%t%e%d");
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n_logfn = 0;
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init_log(stderr);
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log = new logfunc_t(this);
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log->put("IO");
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log->settype(IOLOG);
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log->ldebug ("Init(log file: '%s').",logfn);
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}
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void
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iofunctions::add_logfn (logfunc_t *fn)
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{
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assert (n_logfn < MAX_LOGFNS);
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logfn_list[n_logfn++] = fn;
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}
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void
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iofunctions::set_log_action (int loglevel, int action)
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{
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for (int i=0; i<n_logfn; i++)
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logfn_list[i]->setonoff(loglevel, action);
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}
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void
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iofunctions::init_log(const char *fn)
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{
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assert (magic==MAGIC_LOGNUM);
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// use newfd/newfn so that we can log the message to the OLD log
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// file descriptor.
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FILE *newfd = stderr;
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char *newfn = "/dev/stderr";
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if( strcmp( fn, "-" ) != 0 ) {
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newfd = fopen(fn, "w");
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if(newfd != NULL) {
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newfn = strdup(fn);
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log->ldebug ("Opened log file '%s'.", fn );
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} else {
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// in constructor, genlog might not exist yet, so do it the safe way.
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log->error("Couldn't open log file: %s, using stderr instead", fn);
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newfd = stderr;
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}
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}
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logfd = newfd;
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logfn = newfn;
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}
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void
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iofunctions::init_log(FILE *fs)
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{
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assert (magic==MAGIC_LOGNUM);
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logfd = fs;
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if(fs == stderr) {
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logfn = "/dev/stderr";
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} else if(fs == stdout) {
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logfn = "/dev/stdout";
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} else {
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logfn = "(unknown)";
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}
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}
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void
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iofunctions::init_log(int fd)
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{
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assert (magic==MAGIC_LOGNUM);
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FILE *tmpfd;
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if( (tmpfd = fdopen(fd,"w")) == NULL ) {
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log->panic("Couldn't open fd %d as a stream for writing", fd);
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return;
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}
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init_log(tmpfd);
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return;
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};
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// all other functions may use genlog safely.
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#define LOG_THIS genlog->
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// This converts the option string to a printf style string with the following args:
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// 1. timer, 2. event, 3. cpu0 eip, 4. device
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void
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iofunctions::set_log_prefix(const char* prefix) {
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strcpy(logprefix,prefix);
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}
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// iofunctions::out( class, level, prefix, fmt, ap)
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// DO NOT nest out() from ::info() and the like.
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// fmt and ap retained for direct printinf from iofunctions only!
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void
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iofunctions::out(int f, int l, const char *prefix, const char *fmt, va_list ap)
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{
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char c=' ', *s;
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assert (magic==MAGIC_LOGNUM);
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assert (this != NULL);
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assert (logfd != NULL);
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//if( showtick )
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// fprintf(logfd, "%011lld", bx_pc_system.time_ticks());
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switch(l) {
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case LOGLEV_INFO: c='i'; break;
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case LOGLEV_PANIC: c='p'; break;
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case LOGLEV_ERROR: c='e'; break;
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case LOGLEV_DEBUG: c='d'; break;
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default: break;
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}
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//fprintf(logfd, "-%c",c);
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//if(prefix != NULL)
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// fprintf(logfd, "%s ", prefix);
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s=logprefix;
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while(*s) {
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switch(*s) {
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case '%':
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if(*(s+1))s++;
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else break;
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switch(*s) {
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case 'd':
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fprintf(logfd, "%s", prefix==NULL?"":prefix);
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break;
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case 't':
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fprintf(logfd, "%011lld", bx_pc_system.time_ticks());
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break;
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case 'i':
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fprintf(logfd, "%08x", BX_CPU(0)->dword.eip);
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break;
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case 'e':
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fprintf(logfd, "%c", c);
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break;
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case '%':
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fprintf(logfd,"%%");
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break;
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default:
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fprintf(logfd,"%%%c",*s);
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}
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break;
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default :
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fprintf(logfd,"%c",*s);
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}
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s++;
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}
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fprintf(logfd," ");
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if(l==LOGLEV_PANIC)
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fprintf(logfd, ">>PANIC<< ");
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vfprintf(logfd, fmt, ap);
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fprintf(logfd, "\n");
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fflush(logfd);
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return;
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}
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iofunctions::iofunctions(FILE *fs)
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{
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init();
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init_log(fs);
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}
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iofunctions::iofunctions(const char *fn)
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{
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init();
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init_log(fn);
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}
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iofunctions::iofunctions(int fd)
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{
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init();
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init_log(fd);
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}
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iofunctions::iofunctions(void)
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{
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this->init();
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}
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iofunctions::~iofunctions(void)
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{
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// flush before erasing magic number, or flush does nothing.
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this->flush();
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this->magic=0;
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}
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#define LOG_THIS genlog->
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int logfunctions::default_onoff[N_LOGLEV] = {
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ACT_IGNORE, // ignore debug
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ACT_REPORT, // report info
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ACT_REPORT, // report error
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#if BX_WITH_WX
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ACT_ASK // on panic, ask user what to do
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#else
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ACT_FATAL // on panic, quit
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#endif
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};
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logfunctions::logfunctions(void)
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{
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prefix = NULL;
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put(" ");
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settype(GENLOG);
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if (io == NULL && Allocio == 0) {
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Allocio = 1;
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io = new iofunc_t(stderr);
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}
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setio(io);
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// BUG: unfortunately this can be called before the bochsrc is read,
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// which means that the bochsrc has no effect on the actions.
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for (int i=0; i<N_LOGLEV; i++)
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onoff[i] = get_default_action(i);
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}
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logfunctions::logfunctions(iofunc_t *iofunc)
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{
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prefix = NULL;
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put(" ");
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settype(GENLOG);
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setio(iofunc);
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// BUG: unfortunately this can be called before the bochsrc is read,
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// which means that the bochsrc has no effect on the actions.
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for (int i=0; i<N_LOGLEV; i++)
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onoff[i] = get_default_action(i);
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}
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logfunctions::~logfunctions(void)
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{
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if ( this->prefix )
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{
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free(this->prefix);
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this->prefix = NULL;
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}
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}
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void
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logfunctions::setio(iofunc_t *i)
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{
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// add pointer to iofunction object to use
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this->logio = i;
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// give iofunction a pointer to me
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i->add_logfn (this);
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}
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void
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logfunctions::put(char *p)
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{
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char *tmpbuf;
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tmpbuf=strdup("[ ]");// if we ever have more than 32 chars,
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// we need to rethink this
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if ( tmpbuf == NULL)
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{
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return ; /* allocation not successful */
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}
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if ( this->prefix != NULL )
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{
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free(this->prefix); /* free previously allocated memory */
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this->prefix = NULL;
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}
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int len=strlen(p);
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for(int i=1;i<len+1;i++) {
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tmpbuf[i]=p[i-1];
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}
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switch(len) {
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case 1: tmpbuf[2]=' ';
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case 2: tmpbuf[3]=' ';
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case 3: tmpbuf[4]=' ';
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case 4: tmpbuf[5]=' ';
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default: tmpbuf[6]=']'; tmpbuf[7]='\0'; break;
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}
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this->prefix=tmpbuf;
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}
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void
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logfunctions::settype(int t)
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{
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type=t;
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}
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void
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logfunctions::info(const char *fmt, ...)
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{
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va_list ap;
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assert (this != NULL);
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assert (this->logio != NULL);
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if(!onoff[LOGLEV_INFO]) return;
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va_start(ap, fmt);
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this->logio->out(this->type,LOGLEV_INFO,this->prefix, fmt, ap);
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if (onoff[LOGLEV_INFO] == ACT_ASK)
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ask (LOGLEV_INFO, this->prefix, fmt, ap);
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if (onoff[LOGLEV_INFO] == ACT_FATAL)
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fatal (this->prefix, fmt, ap);
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va_end(ap);
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}
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void
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logfunctions::error(const char *fmt, ...)
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{
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va_list ap;
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assert (this != NULL);
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assert (this->logio != NULL);
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if(!onoff[LOGLEV_ERROR]) return;
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va_start(ap, fmt);
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this->logio->out(this->type,LOGLEV_ERROR,this->prefix, fmt, ap);
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if (onoff[LOGLEV_ERROR] == ACT_ASK)
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ask (LOGLEV_ERROR, this->prefix, fmt, ap);
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if (onoff[LOGLEV_ERROR] == ACT_FATAL)
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fatal (this->prefix, fmt, ap);
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va_end(ap);
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}
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void
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logfunctions::panic(const char *fmt, ...)
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{
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va_list ap;
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assert (this != NULL);
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assert (this->logio != NULL);
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// Special case for panics since they are so important. Always print
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// the panic to the log, no matter what the log action says.
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//if(!onoff[LOGLEV_PANIC]) return;
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va_start(ap, fmt);
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this->logio->out(this->type,LOGLEV_PANIC,this->prefix, fmt, ap);
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if (onoff[LOGLEV_PANIC] == ACT_ASK)
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ask (LOGLEV_PANIC, this->prefix, fmt, ap);
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if (onoff[LOGLEV_PANIC] == ACT_FATAL)
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fatal (this->prefix, fmt, ap);
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va_end(ap);
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}
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void
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logfunctions::ldebug(const char *fmt, ...)
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{
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va_list ap;
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assert (this != NULL);
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assert (this->logio != NULL);
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if(!onoff[LOGLEV_DEBUG]) return;
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va_start(ap, fmt);
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this->logio->out(this->type,LOGLEV_DEBUG,this->prefix, fmt, ap);
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if (onoff[LOGLEV_DEBUG] == ACT_ASK)
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ask (LOGLEV_DEBUG, this->prefix, fmt, ap);
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if (onoff[LOGLEV_DEBUG] == ACT_FATAL)
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fatal (this->prefix, fmt, ap);
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va_end(ap);
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}
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void
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logfunctions::ask (int level, const char *prefix, const char *fmt, va_list ap)
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{
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// Guard against reentry on ask() function. The danger is that some
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// function that's called within ask() could trigger another
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// BX_PANIC that could call ask() again, leading to infinite
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// recursion and infinite asks.
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static char in_ask_already = 0;
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char buf1[1024];
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if (in_ask_already) {
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fprintf (stderr, "logfunctions::ask() should not reenter!!\n");
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return;
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}
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in_ask_already = 1;
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vsprintf (buf1, fmt, ap);
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// FIXME: facility set to 0 because it's unknown.
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// update vga screen. This is useful because sometimes useful messages
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// are printed on the screen just before a panic. It's also potentially
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// dangerous if this function calls ask again... That's why I added
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// the reentry check above.
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if (SIM->get_init_done()) DEV_vga_refresh();
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#if !BX_EXTERNAL_DEBUGGER
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int val = SIM->log_msg (prefix, level, buf1);
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switch (val)
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{
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case BX_LOG_ASK_CHOICE_CONTINUE:
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break;
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case BX_LOG_ASK_CHOICE_CONTINUE_ALWAYS:
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// user said continue, and don't "ask" for this facility again.
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setonoff (level, ACT_REPORT);
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break;
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case BX_LOG_ASK_CHOICE_DIE:
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in_ask_already = 0; // because fatal will longjmp out
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fatal (prefix, fmt, ap);
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// should never get here
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BX_PANIC (("in ask(), fatal() should never return!"));
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break;
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case BX_LOG_ASK_CHOICE_DUMP_CORE:
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fprintf (stderr, "User chose to dump core...\n");
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#if BX_HAVE_ABORT
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abort ();
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#else
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// do something highly illegal that should kill the process.
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// Hey, this is fun!
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{
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char *crashptr = (char *)0; char c = *crashptr;
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}
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fprintf (stderr, "Sorry, I couldn't find your abort() function. Exiting.");
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exit (0);
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#endif
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#if BX_DEBUGGER
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case BX_LOG_ASK_CHOICE_ENTER_DEBUG:
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// user chose debugger. To "drop into the debugger" we just set the
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// interrupt_requested bit and continue execution. Before the next
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// instruction, it should notice the user interrupt and return to
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// the debugger.
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bx_guard.interrupt_requested = 1;
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break;
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#endif
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default:
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// this happens if panics happen before the callback is initialized
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// in gui/control.cc.
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fprintf (stderr, "WARNING: log_msg returned unexpected value %d\n", val);
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}
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#else
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// external debugger ask code goes here
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#endif
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in_ask_already = 0;
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}
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void
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logfunctions::fatal (const char *prefix, const char *fmt, va_list ap)
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{
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bx_atexit();
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#if !BX_WITH_WX
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static char *divider = "========================================================================";
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fprintf (stderr, "%s\n", divider);
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fprintf (stderr, "Bochs is exiting with the following message:\n");
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fprintf (stderr, "%s ", prefix);
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vfprintf (stderr, fmt, ap);
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fprintf (stderr, "\n%s\n", divider);
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#endif
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#if 0 && defined(WIN32)
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#error disabled because it is not working yet!
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// wait for a keypress before quitting. Depending on how bochs is
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// installed, the console window can disappear before the user has
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// a chance to read the final message.
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fprintf (stderr, "\n\nPress Enter to exit...\n");
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char buf[8];
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fgets (buf, 8, stdin);
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#endif
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#if !BX_DEBUGGER
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BX_EXIT(1);
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#else
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static bx_bool dbg_exit_called = 0;
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if (dbg_exit_called == 0) {
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dbg_exit_called = 1;
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bx_dbg_exit(1);
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}
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#endif
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// not safe to use BX_* log functions in here.
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fprintf (stderr, "fatal() should never return, but it just did\n");
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}
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iofunc_t *io = NULL;
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logfunc_t *genlog = NULL;
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void bx_center_print (FILE *file, char *line, int maxwidth)
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{
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int imax;
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int len = strlen(line);
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if (len > maxwidth)
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BX_PANIC (("bx_center_print: line is too long: '%s'", line));
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imax = (maxwidth - len) >> 1;
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for (int i=0; i<imax; i++) fputc (' ', file);
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fputs (line, file);
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}
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