///////////////////////////////////////////////////////////////////////// // $Id: logio.cc,v 1.32 2002-09-25 18:35:06 bdenney Exp $ ///////////////////////////////////////////////////////////////////////// // // Copyright (C) 2001 MandrakeSoft S.A. // // MandrakeSoft S.A. // 43, rue d'Aboukir // 75002 Paris - France // http://www.linux-mandrake.com/ // http://www.mandrakesoft.com/ // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #include "bochs.h" #include #include "state_file.h" // Just for the iofunctions int Allocio=0; void iofunctions::flush(void) { if(logfd && magic == MAGIC_LOGNUM) { fflush(logfd); } } void iofunctions::init(void) { // iofunctions methods must not be called before this magic // number is set. magic=MAGIC_LOGNUM; // sets the default logprefix strcpy(logprefix,"%t%e%d"); n_logfn = 0; init_log(stderr); log = new logfunc_t(this); log->put("IO"); log->settype(IOLOG); log->ldebug ("Init(log file: '%s').",logfn); } void iofunctions::add_logfn (logfunc_t *fn) { assert (n_logfn < MAX_LOGFNS); logfn_list[n_logfn++] = fn; } void iofunctions::set_log_action (int loglevel, int action) { for (int i=0; isetonoff(loglevel, action); } void iofunctions::init_log(const char *fn) { assert (magic==MAGIC_LOGNUM); // use newfd/newfn so that we can log the message to the OLD log // file descriptor. FILE *newfd = stderr; char *newfn = "/dev/stderr"; if( strcmp( fn, "-" ) != 0 ) { newfd = fopen(fn, "w"); if(newfd != NULL) { newfn = strdup(fn); log->ldebug ("Opened log file '%s'.", fn ); } else { // in constructor, genlog might not exist yet, so do it the safe way. log->ldebug("Couldn't open log file: %s", fn); } } logfd = newfd; logfn = newfn; } void iofunctions::init_log(FILE *fs) { assert (magic==MAGIC_LOGNUM); logfd = fs; if(fs == stderr) { logfn = "/dev/stderr"; } else if(fs == stdout) { logfn = "/dev/stdout"; } else { logfn = "(unknown)"; } } void iofunctions::init_log(int fd) { assert (magic==MAGIC_LOGNUM); FILE *tmpfd; if( (tmpfd = fdopen(fd,"w")) == NULL ) { log->panic("Couldn't open fd %d as a stream for writing", fd); return; } init_log(tmpfd); return; }; // all other functions may use genlog safely. #define LOG_THIS genlog-> // This converts the option string to a printf style string with the following args: // 1. timer, 2. event, 3. cpu0 eip, 4. device void iofunctions::set_log_prefix(const char* prefix) { strcpy(logprefix,prefix); } // iofunctions::out( class, level, prefix, fmt, ap) // DO NOT nest out() from ::info() and the like. // fmt and ap retained for direct printinf from iofunctions only! void iofunctions::out(int f, int l, const char *prefix, const char *fmt, va_list ap) { char c=' ', *s; assert (magic==MAGIC_LOGNUM); assert (this != NULL); assert (logfd != NULL); //if( showtick ) // fprintf(logfd, "%011lld", bx_pc_system.time_ticks()); switch(l) { case LOGLEV_INFO: c='i'; break; case LOGLEV_PANIC: c='p'; break; case LOGLEV_ERROR: c='e'; break; case LOGLEV_DEBUG: c='d'; break; default: break; } //fprintf(logfd, "-%c",c); //if(prefix != NULL) // fprintf(logfd, "%s ", prefix); s=logprefix; while(*s) { switch(*s) { case '%': if(*(s+1))s++; else break; switch(*s) { case 'd': fprintf(logfd, "%s", prefix==NULL?"":prefix); break; case 't': fprintf(logfd, "%011lld", bx_pc_system.time_ticks()); break; case 'i': fprintf(logfd, "%08x", BX_CPU(0)->dword.eip); break; case 'e': fprintf(logfd, "%c", c); break; case '%': fprintf(logfd,"%%"); break; default: fprintf(logfd,"%%%c",*s); } break; default : fprintf(logfd,"%c",*s); } s++; } fprintf(logfd," "); if(l==LOGLEV_PANIC) fprintf(logfd, ">>PANIC<< "); vfprintf(logfd, fmt, ap); fprintf(logfd, "\n"); fflush(logfd); return; } iofunctions::iofunctions(FILE *fs) { init(); init_log(fs); } iofunctions::iofunctions(const char *fn) { init(); init_log(fn); } iofunctions::iofunctions(int fd) { init(); init_log(fd); } iofunctions::iofunctions(void) { this->init(); } iofunctions::~iofunctions(void) { // flush before erasing magic number, or flush does nothing. this->flush(); this->magic=0; } #define LOG_THIS genlog-> int logfunctions::default_onoff[N_LOGLEV] = { ACT_IGNORE, // ignore debug ACT_REPORT, // report info ACT_REPORT, // report error #if BX_WITH_WX ACT_ASK // on panic, ask user what to do #else ACT_FATAL // on panic, quit #endif }; logfunctions::logfunctions(void) { prefix = NULL; put(" "); settype(GENLOG); if (io == NULL && Allocio == 0) { Allocio = 1; io = new iofunc_t(stderr); } setio(io); // BUG: unfortunately this can be called before the bochsrc is read, // which means that the bochsrc has no effect on the actions. for (int i=0; iprefix ) { free(this->prefix); this->prefix = NULL; } } void logfunctions::setio(iofunc_t *i) { // add pointer to iofunction object to use this->logio = i; // give iofunction a pointer to me i->add_logfn (this); } void logfunctions::put(char *p) { char *tmpbuf; tmpbuf=strdup("[ ]");// if we ever have more than 32 chars, // we need to rethink this if ( tmpbuf == NULL) { return ; /* allocation not successful */ } if ( this->prefix != NULL ) { free(this->prefix); /* free previously allocated memory */ this->prefix = NULL; } int len=strlen(p); for(int i=1;iprefix=tmpbuf; } void logfunctions::settype(int t) { type=t; } void logfunctions::info(const char *fmt, ...) { va_list ap; assert (this != NULL); assert (this->logio != NULL); if(!onoff[LOGLEV_INFO]) return; va_start(ap, fmt); this->logio->out(this->type,LOGLEV_INFO,this->prefix, fmt, ap); if (onoff[LOGLEV_INFO] == ACT_ASK) ask (LOGLEV_INFO, this->prefix, fmt, ap); if (onoff[LOGLEV_INFO] == ACT_FATAL) fatal (this->prefix, fmt, ap); va_end(ap); } void logfunctions::error(const char *fmt, ...) { va_list ap; assert (this != NULL); assert (this->logio != NULL); if(!onoff[LOGLEV_ERROR]) return; va_start(ap, fmt); this->logio->out(this->type,LOGLEV_ERROR,this->prefix, fmt, ap); if (onoff[LOGLEV_ERROR] == ACT_ASK) ask (LOGLEV_ERROR, this->prefix, fmt, ap); if (onoff[LOGLEV_ERROR] == ACT_FATAL) fatal (this->prefix, fmt, ap); va_end(ap); } void logfunctions::panic(const char *fmt, ...) { va_list ap; assert (this != NULL); assert (this->logio != NULL); // Special case for panics since they are so important. Always print // the panic to the log, no matter what the log action says. //if(!onoff[LOGLEV_PANIC]) return; va_start(ap, fmt); this->logio->out(this->type,LOGLEV_PANIC,this->prefix, fmt, ap); if (onoff[LOGLEV_PANIC] == ACT_ASK) ask (LOGLEV_PANIC, this->prefix, fmt, ap); if (onoff[LOGLEV_PANIC] == ACT_FATAL) fatal (this->prefix, fmt, ap); va_end(ap); } void logfunctions::ldebug(const char *fmt, ...) { va_list ap; assert (this != NULL); assert (this->logio != NULL); if(!onoff[LOGLEV_DEBUG]) return; va_start(ap, fmt); this->logio->out(this->type,LOGLEV_DEBUG,this->prefix, fmt, ap); if (onoff[LOGLEV_DEBUG] == ACT_ASK) ask (LOGLEV_DEBUG, this->prefix, fmt, ap); if (onoff[LOGLEV_DEBUG] == ACT_FATAL) fatal (this->prefix, fmt, ap); va_end(ap); } void logfunctions::ask (int level, const char *prefix, const char *fmt, va_list ap) { // Guard against reentry on ask() function. The danger is that some // function that's called within ask() could trigger another // BX_PANIC that could call ask() again, leading to infinite // recursion and infinite asks. static char in_ask_already = 0; char buf1[1024]; if (in_ask_already) { fprintf (stderr, "logfunctions::ask() should not reenter!!\n"); return; } in_ask_already = 1; vsprintf (buf1, fmt, ap); // FIXME: facility set to 0 because it's unknown. // update vga screen. This is useful because sometimes useful messages // are printed on the screen just before a panic. It's also potentially // dangerous if this function calls ask again... That's why I added // the reentry check above. if (SIM->get_init_done()) bx_vga.timer_handler(&bx_vga); #if !BX_EXTERNAL_DEBUGGER int val = SIM->log_msg (prefix, level, buf1); switch (val) { case BX_LOG_ASK_CHOICE_CONTINUE: break; case BX_LOG_ASK_CHOICE_CONTINUE_ALWAYS: // user said continue, and don't "ask" for this facility again. setonoff (level, ACT_REPORT); break; case BX_LOG_ASK_CHOICE_DIE: in_ask_already = 0; // because fatal will longjmp out fatal (prefix, fmt, ap); // should never get here BX_PANIC (("in ask(), fatal() should never return!")); break; case BX_LOG_ASK_CHOICE_DUMP_CORE: fprintf (stderr, "User chose to dump core...\n"); #if BX_HAVE_ABORT abort (); #else // do something highly illegal that should kill the process. // Hey, this is fun! { char *crashptr = (char *)0; char c = *crashptr; } fprintf (stderr, "Sorry, I couldn't find your abort() function. Exiting."); exit (0); #endif #if BX_DEBUGGER case BX_LOG_ASK_CHOICE_ENTER_DEBUG: // user chose debugger. To "drop into the debugger" we just set the // interrupt_requested bit and continue execution. Before the next // instruction, it should notice the user interrupt and return to // the debugger. bx_guard.interrupt_requested = 1; break; #endif default: // this happens if panics happen before the callback is initialized // in gui/control.cc. fprintf (stderr, "WARNING: log_msg returned unexpected value %d\n", val); } #else // external debugger ask code goes here #endif in_ask_already = 0; } void logfunctions::fatal (const char *prefix, const char *fmt, va_list ap) { bx_atexit(); #if !BX_WITH_WX static char *divider = "========================================================================"; fprintf (stderr, "%s\n", divider); fprintf (stderr, "Bochs is exiting with the following message:\n"); fprintf (stderr, "%s ", prefix); vfprintf (stderr, fmt, ap); fprintf (stderr, "\n%s\n", divider); #endif #if 0 && defined(WIN32) #error disabled because it is not working yet! // wait for a keypress before quitting. Depending on how bochs is // installed, the console window can disappear before the user has // a chance to read the final message. fprintf (stderr, "\n\nPress Enter to exit...\n"); char buf[8]; fgets (buf, 8, stdin); #endif #if !BX_DEBUGGER BX_EXIT(1); #else static Boolean dbg_exit_called = 0; if (dbg_exit_called == 0) { dbg_exit_called = 1; bx_dbg_exit(1); } #endif // not safe to use BX_* log functions in here. fprintf (stderr, "fatal() should never return, but it just did\n"); } iofunc_t *io = NULL; logfunc_t *genlog = NULL; void bx_center_print (FILE *file, char *line, int maxwidth) { int imax; imax = (maxwidth - strlen(line)) >> 1; for (int i=0; i