minix/servers/is/dmp_kernel.c

/* Debugging dump procedures for the kernel. */

#include "inc.h"
#include <timers.h>
#include <ibm/interrupt.h>
#include <minix/endpoint.h>
#include "../../kernel/const.h"
#include "../../kernel/config.h"
#include "../../kernel/debug.h"
#include "../../kernel/type.h"
#include "../../kernel/proc.h"
#include "../../kernel/ipc.h"

#define click_to_round_k(n) \
	((unsigned) ((((unsigned long) (n) << CLICK_SHIFT) + 512) / 1024))

/* Declare some local dump procedures. */
FORWARD _PROTOTYPE( char *proc_name, (int proc_nr)		);
FORWARD _PROTOTYPE( char *s_traps_str, (int flags)		);
FORWARD _PROTOTYPE( char *s_flags_str, (int flags)		);
FORWARD _PROTOTYPE( char *p_rts_flags_str, (int flags)		);

/* Some global data that is shared among several dumping procedures. 
 * Note that the process table copy has the same name as in the kernel
 * so that most macros and definitions from proc.h also apply here.
 */
PUBLIC struct proc proc[NR_TASKS + NR_PROCS];
PUBLIC struct priv priv[NR_SYS_PROCS];
PUBLIC struct boot_image image[NR_BOOT_PROCS];

/*===========================================================================*
 *				timing_dmp				     *
 *===========================================================================*/
PUBLIC void timing_dmp()
{
#if ! DEBUG_TIME_LOCKS
  printf("Enable the DEBUG_TIME_LOCKS definition in src/kernel/config.h\n");
#else
  static struct lock_timingdata timingdata[TIMING_CATEGORIES];
  int r, c, f, skipped = 0, printed = 0, maxlines = 23, x = 0;
  static int offsetlines = 0;

  if ((r = sys_getlocktimings(&timingdata[0])) != OK) {
      report("IS","warning: couldn't get copy of lock timings", r);
      return;
  } 

  for(c = 0; c < TIMING_CATEGORIES; c++) {
	int b;
	if (!timingdata[c].lock_timings_range[0] || !timingdata[c].binsize)
		continue;
	x = printf("%-*s: misses %lu, resets %lu, measurements %lu: ",
	TIMING_NAME, timingdata[c].names,
		timingdata[c].misses,
		timingdata[c].resets,
		timingdata[c].measurements);
	for(b = 0; b < TIMING_POINTS; b++) {
		int w;
		if (!timingdata[c].lock_timings[b])
			continue;
		x += (w = printf(" %5d: %5d", timingdata[c].lock_timings_range[0] +
			b*timingdata[c].binsize,
			timingdata[c].lock_timings[b]));
	 	if (x + w >= 80) { printf("\n"); x = 0; }
	}
  	if (x > 0) printf("\n");
  }
#endif
}

/*===========================================================================*
 *				kmessages_dmp				     *
 *===========================================================================*/
PUBLIC void kmessages_dmp()
{
  struct kmessages kmess;		/* get copy of kernel messages */
  char print_buf[KMESS_BUF_SIZE+1];	/* this one is used to print */
  int start;				/* calculate start of messages */
  int r;

  /* Try to get a copy of the kernel messages. */
  if ((r = sys_getkmessages(&kmess)) != OK) {
      report("IS","warning: couldn't get copy of kmessages", r);
      return;
  }

  /* Try to print the kernel messages. First determine start and copy the
   * buffer into a print-buffer. This is done because the messages in the
   * copy may wrap (the kernel buffer is circular).
   */
  start = ((kmess.km_next + KMESS_BUF_SIZE) - kmess.km_size) % KMESS_BUF_SIZE;
  r = 0;
  while (kmess.km_size > 0) {
  	print_buf[r] = kmess.km_buf[(start+r) % KMESS_BUF_SIZE];
  	r ++;
  	kmess.km_size --;
  }
  print_buf[r] = 0;		/* make sure it terminates */
  printf("Dump of all messages generated by the kernel.\n\n"); 
  printf("%s", print_buf);		/* print the messages */
}

/*===========================================================================*
 *				monparams_dmp				     *
 *===========================================================================*/
PUBLIC void monparams_dmp()
{
  char val[1024];
  char *e;
  int r;

  /* Try to get a copy of the boot monitor parameters. */
  if ((r = sys_getmonparams(val, sizeof(val))) != OK) {
      report("IS","warning: couldn't get copy of monitor params", r);
      return;
  }

  /* Append new lines to the result. */
  e = val;
  do {
	e += strlen(e);
	*e++ = '\n';
  } while (*e != 0); 

  /* Finally, print the result. */
  printf("Dump of kernel environment strings set by boot monitor.\n");
  printf("\n%s\n", val);
}

/*===========================================================================*
 *				irqtab_dmp				     *
 *===========================================================================*/
PUBLIC void irqtab_dmp()
{
  int i,r;
  struct irq_hook irq_hooks[NR_IRQ_HOOKS];
  int irq_actids[NR_IRQ_VECTORS];
  struct irq_hook *e;	/* irq tab entry */
  char *irq[] = {
  	"clock",	/* 00 */
  	"keyboard",	/* 01 */
  	"cascade",	/* 02 */
  	"rs232",	/* 03 */
  	"rs232",	/* 04 */
  	"NIC(eth)",	/* 05 */
  	"floppy",	/* 06 */
  	"printer",	/* 07 */
  	"",	/* 08 */
  	"",	/* 09 */
  	"",	/* 10 */
  	"",	/* 11 */
  	"",	/* 12 */
  	"",	/* 13 */
  	"at_wini_0",	/* 14 */
  	"at_wini_1",	/* 15 */
  };

  if ((r = sys_getirqhooks(irq_hooks)) != OK) {
      report("IS","warning: couldn't get copy of irq hooks", r);
      return;
  }
  if ((r = sys_getirqactids(irq_actids)) != OK) {
      report("IS","warning: couldn't get copy of irq mask", r);
      return;
  }

#if 0
  printf("irq_actids:");
  for (i= 0; i<NR_IRQ_VECTORS; i++)
	printf(" [%d] = 0x%08x", i, irq_actids[i]);
  printf("\n");
#endif

  printf("IRQ policies dump shows use of kernel's IRQ hooks.\n");
  printf("-h.id- -proc.nr- -IRQ vector (nr.)- -policy- -notify id-\n");
  for (i=0; i<NR_IRQ_HOOKS; i++) {
  	e = &irq_hooks[i];
  	printf("%3d", i);
  	if (e->proc_nr_e==NONE) {
  	    printf("    <unused>\n");
  	    continue;
  	}
  	printf("%10d  ", e->proc_nr_e); 
  	printf("    %9.9s (%02d) ", irq[e->irq], e->irq); 
  	printf("  %s", (e->policy & IRQ_REENABLE) ? "reenable" : "    -   ");
  	printf("   %d", e->notify_id);
	if (irq_actids[e->irq] & (1 << i))
		printf("masked");
	printf("\n");
  }
  printf("\n");
}

/*===========================================================================*
 *				image_dmp				     *
 *===========================================================================*/
PUBLIC void image_dmp()
{
  int m, i,j,r;
  struct boot_image *ip;
  static char ipc_to[BITCHUNK_BITS*2];
	
  if ((r = sys_getimage(image)) != OK) {
      report("IS","warning: couldn't get copy of image table", r);
      return;
  }
  printf("Image table dump showing all processes included in system image.\n");
  printf("---name-- -nr- -flags- -traps- -sq- ----pc- -stack- -ipc_to[0]--------\n");
  for (m=0; m<NR_BOOT_PROCS; m++) { 
      ip = &image[m];
        for (i=j=0; i < BITCHUNK_BITS; i++, j++) {
       	    ipc_to[j] = (ip->ipc_to & (1<<i)) ? '1' : '0';
       	    if (i % 8 == 7) ipc_to[++j] = ' ';
       	}
        ipc_to[j] = '\0';
      printf("%8s %4d   %s   %s  %3d %7lu %7lu   %s\n",
          ip->proc_name, ip->proc_nr, 
	       s_flags_str(ip->flags), s_traps_str(ip->trap_mask), 
	ip->priority, (long)ip->initial_pc, ip->stksize, ipc_to); 
  }
  printf("\n");
}

/*===========================================================================*
 *				sched_dmp    				     *
 *===========================================================================*/
PUBLIC void sched_dmp()
{
  struct proc *rdy_head[NR_SCHED_QUEUES];
  struct kinfo kinfo;
  register struct proc *rp;
  vir_bytes ptr_diff;
  int r;

  /* First obtain a scheduling information. */
  if ((r = sys_getschedinfo(proc, rdy_head)) != OK) {
      report("IS","warning: couldn't get copy of process table", r);
      return;
  }
  /* Then obtain kernel addresses to correct pointer information. */
  if ((r = sys_getkinfo(&kinfo)) != OK) {
      report("IS","warning: couldn't get kernel addresses", r);
      return;
  }

  /* Update all pointers. Nasty pointer algorithmic ... */
  ptr_diff = (vir_bytes) proc - (vir_bytes) kinfo.proc_addr;
  for (r=0;r<NR_SCHED_QUEUES; r++)
      if (rdy_head[r] != NIL_PROC)
          rdy_head[r] = 
              (struct proc *)((vir_bytes) rdy_head[r] + ptr_diff);
  for (rp=BEG_PROC_ADDR; rp < END_PROC_ADDR; rp++)
      if (rp->p_nextready != NIL_PROC)
          rp->p_nextready =
               (struct proc *)((vir_bytes) rp->p_nextready + ptr_diff);

  /* Now show scheduling queues. */
  printf("Dumping scheduling queues.\n");

  for (r=0;r<NR_SCHED_QUEUES; r++) {
      rp = rdy_head[r];
      if (!rp) continue;
      printf("%2d: ", r);
      while (rp != NIL_PROC) {
          printf("%3d ", rp->p_nr);
          rp = rp->p_nextready;
      }
      printf("\n");
  }
  printf("\n");
}

/*===========================================================================*
 *				kenv_dmp				     *
 *===========================================================================*/
PUBLIC void kenv_dmp()
{
    struct kinfo kinfo;
    struct machine machine;
    int r;
    if ((r = sys_getkinfo(&kinfo)) != OK) {
    	report("IS","warning: couldn't get copy of kernel info struct", r);
    	return;
    }
    if ((r = sys_getmachine(&machine)) != OK) {
    	report("IS","warning: couldn't get copy of kernel machine struct", r);
    	return;
    }

    printf("Dump of kinfo and machine structures.\n\n");
    printf("Machine structure:\n");
    printf("- pc_at:      %3d\n", machine.pc_at); 
    printf("- ps_mca:     %3d\n", machine.ps_mca); 
    printf("- processor:  %3d\n", machine.processor); 
    printf("- protected:  %3d\n", machine.protected); 
    printf("- vdu_ega:    %3d\n", machine.vdu_ega); 
    printf("- vdu_vga:    %3d\n\n", machine.vdu_vga); 
    printf("Kernel info structure:\n");
    printf("- code_base:  %5u\n", kinfo.code_base); 
    printf("- code_size:  %5u\n", kinfo.code_size); 
    printf("- data_base:  %5u\n", kinfo.data_base); 
    printf("- data_size:  %5u\n", kinfo.data_size); 
    printf("- proc_addr:  %5u\n", kinfo.proc_addr); 
    printf("- kmem_base:  %5u\n", kinfo.kmem_base); 
    printf("- kmem_size:  %5u\n", kinfo.kmem_size); 
    printf("- bootdev_base:  %5u\n", kinfo.bootdev_base); 
    printf("- bootdev_size:  %5u\n", kinfo.bootdev_size); 
    printf("- ramdev_base:   %5u\n", kinfo.ramdev_base); 
    printf("- ramdev_size:   %5u\n", kinfo.ramdev_size); 
    printf("- params_base:   %5u\n", kinfo.params_base); 
    printf("- params_size:   %5u\n", kinfo.params_size); 
    printf("- nr_procs:     %3u\n", kinfo.nr_procs); 
    printf("- nr_tasks:     %3u\n", kinfo.nr_tasks); 
    printf("- release:      %.6s\n", kinfo.release); 
    printf("- version:      %.6s\n", kinfo.version); 
#if DEBUG_LOCK_CHECK
    printf("- relocking:    %d\n", kinfo.relocking); 
#endif
    printf("\n");
}

PRIVATE char *s_flags_str(int flags)
{
	static char str[10];
	str[0] = (flags & PREEMPTIBLE) ? 'P' : '-';
	str[1] = '-';
	str[2] = (flags & BILLABLE)    ? 'B' : '-';
	str[3] = (flags & SYS_PROC)    ? 'S' : '-';
	str[4] = '-';
	str[5] = '\0';

	return str;
}

PRIVATE char *s_traps_str(int flags)
{
	static char str[10];
	str[0] = (flags & (1 << ECHO)) ? 'E' : '-';
	str[1] = (flags & (1 << SEND))  ? 'S' : '-';
	str[2] = (flags & (1 << RECEIVE))  ? 'R' : '-';
	str[3] = (flags & (1 << SENDREC))  ? 'B' : '-';
	str[4] = (flags & (1 << NOTIFY)) ? 'N' : '-';
	str[5] = '\0';

	return str;
}

/*===========================================================================*
 *				privileges_dmp 				     *
 *===========================================================================*/
PUBLIC void privileges_dmp()
{
  register struct proc *rp;
  static struct proc *oldrp = BEG_PROC_ADDR;
  register struct priv *sp;
  static char ipc_to[NR_SYS_PROCS + 1 + NR_SYS_PROCS/8];
  int r, i,j, n = 0;

  /* First obtain a fresh copy of the current process and system table. */
  if ((r = sys_getprivtab(priv)) != OK) {
      report("IS","warning: couldn't get copy of system privileges table", r);
      return;
  }
  if ((r = sys_getproctab(proc)) != OK) {
      report("IS","warning: couldn't get copy of process table", r);
      return;
  }

  printf("\n--nr-id-name---- -flags- -traps- -ipc_to mask------------------------ \n");

  for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
	if (isemptyp(rp)) continue;
	if (++n > 23) break;
	if (proc_nr(rp) == IDLE) 	printf("(%2d) ", proc_nr(rp));  
	else if (proc_nr(rp) < 0) 	printf("[%2d] ", proc_nr(rp));
	else 				printf(" %2d  ", proc_nr(rp));
        r = -1;
        for (sp = &priv[0]; sp < &priv[NR_SYS_PROCS]; sp++) 
            if (sp->s_proc_nr == rp->p_nr) { r ++; break; }
        if (r == -1 && ! (rp->p_rts_flags & SLOT_FREE)) {
	    sp = &priv[USER_PRIV_ID];
        }
	printf("(%02u) %-7.7s %s   %s  ",
	       sp->s_id, rp->p_name,
	       s_flags_str(sp->s_flags), s_traps_str(sp->s_trap_mask) 
        );
        for (i=j=0; i < NR_SYS_PROCS; i++, j++) {
       	    ipc_to[j] = get_sys_bit(sp->s_ipc_to, i) ? '1' : '0';
       	    if (i % 8 == 7) ipc_to[++j] = ' ';
       	}
        ipc_to[j] = '\0';

	printf(" %s \n", ipc_to);
  }
  if (rp == END_PROC_ADDR) rp = BEG_PROC_ADDR; else printf("--more--\r");
  oldrp = rp;

}

/*===========================================================================*
 *				sendmask_dmp   				     *
 *===========================================================================*/
PUBLIC void sendmask_dmp()
{
  register struct proc *rp;
  static struct proc *oldrp = BEG_PROC_ADDR;
  int r, i,j, n = 0;

  /* First obtain a fresh copy of the current process table. */
  if ((r = sys_getproctab(proc)) != OK) {
      report("IS","warning: couldn't get copy of process table", r);
      return;
  }

  printf("\n\n");
  printf("Sendmask dump for process table. User processes (*) don't have [].");
  printf("\n");
  printf("The rows of bits indicate to which processes each process may send.");
  printf("\n\n");

#if DEAD_CODE
  printf("              ");
  for (j=proc_nr(BEG_PROC_ADDR); j< INIT_PROC_NR+1; j++) {
     printf("%3d", j);
  }
  printf("  *\n");

  for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
        if (isemptyp(rp)) continue;
        if (++n > 20) break;

    	printf("%8s ", rp->p_name);
	if (proc_nr(rp) == IDLE) 	printf("(%2d) ", proc_nr(rp));  
	else if (proc_nr(rp) < 0) 	printf("[%2d] ", proc_nr(rp));
	else 				printf(" %2d  ", proc_nr(rp));

    	for (j=proc_nr(BEG_PROC_ADDR); j<INIT_PROC_NR+2; j++) {
    	    if (isallowed(rp->p_sendmask, j))	printf(" 1 ");
    	    else 				printf(" 0 ");
    	}
        printf("\n");
  }
  if (rp == END_PROC_ADDR) { printf("\n"); rp = BEG_PROC_ADDR; }
  else printf("--more--\r");
  oldrp = rp;
#endif
}

PRIVATE char *p_rts_flags_str(int flags)
{
	static char str[10];
	str[0] = (flags & NO_MAP) ? 'M' : '-';
	str[1] = (flags & SENDING)  ? 'S' : '-';
	str[2] = (flags & RECEIVING)    ? 'R' : '-';
	str[3] = (flags & SIGNALED)    ? 'I' : '-';
	str[4] = (flags & SIG_PENDING)    ? 'P' : '-';
	str[5] = (flags & P_STOP)    ? 'T' : '-';
	str[6] = '\0';

	return str;
}

/*===========================================================================*
 *				proctab_dmp    				     *
 *===========================================================================*/
#if (CHIP == INTEL)
PUBLIC void proctab_dmp()
{
/* Proc table dump */

  register struct proc *rp;
  static struct proc *oldrp = BEG_PROC_ADDR;
  int r, n = 0;
  phys_clicks text, data, size;

  /* First obtain a fresh copy of the current process table. */
  if ((r = sys_getproctab(proc)) != OK) {
      report("IS","warning: couldn't get copy of process table", r);
      return;
  }

  printf("\n-nr-----gen---endpoint--name--- -prior-quant- -user---sys----size-rts flags-\n");

  for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
	if (isemptyp(rp)) continue;
	if (++n > 23) break;
	text = rp->p_memmap[T].mem_phys;
	data = rp->p_memmap[D].mem_phys;
	size = rp->p_memmap[T].mem_len
		+ ((rp->p_memmap[S].mem_phys + rp->p_memmap[S].mem_len) - data);
	if (proc_nr(rp) == IDLE) 	printf("(%2d) ", proc_nr(rp));  
	else if (proc_nr(rp) < 0) 	printf("[%2d] ", proc_nr(rp));
	else 				printf(" %2d  ", proc_nr(rp));
	printf(" %5d %10d ", _ENDPOINT_G(rp->p_endpoint), rp->p_endpoint);
	printf(" %-8.8s %02u/%02u %02d/%02u %6lu%6lu %6uK %s",
	       rp->p_name,
	       rp->p_priority, rp->p_max_priority,
	       rp->p_ticks_left, rp->p_quantum_size, 
	       rp->p_user_time, rp->p_sys_time,
	       click_to_round_k(size),
	       p_rts_flags_str(rp->p_rts_flags));
	if (rp->p_rts_flags & (SENDING|RECEIVING)) {
		printf(" %-7.7s", proc_name(_ENDPOINT_P(rp->p_getfrom_e)));
	} 
	printf("\n");
  }
  if (rp == END_PROC_ADDR) rp = BEG_PROC_ADDR; else printf("--more--\r");
  oldrp = rp;
}
#endif				/* (CHIP == INTEL) */

/*===========================================================================*
 *				memmap_dmp    				     *
 *===========================================================================*/
PUBLIC void memmap_dmp()
{
  register struct proc *rp;
  static struct proc *oldrp = proc;
  int r, n = 0;
  phys_clicks size;

  /* First obtain a fresh copy of the current process table. */
  if ((r = sys_getproctab(proc)) != OK) {
      report("IS","warning: couldn't get copy of process table", r);
      return;
  }

  printf("\n-nr/name--- --pc-- --sp-- -----text----- -----data----- ----stack----- --size-\n");
  for (rp = oldrp; rp < END_PROC_ADDR; rp++) {
	if (isemptyp(rp)) continue;
	if (++n > 23) break;
	size = rp->p_memmap[T].mem_len
		+ ((rp->p_memmap[S].mem_phys + rp->p_memmap[S].mem_len)
						- rp->p_memmap[D].mem_phys);
	printf("%3d %-7.7s%7lx%7lx %4x %4x %4x %4x %4x %4x %4x %4x %4x %5uK\n",
	       proc_nr(rp),
	       rp->p_name,
	       (unsigned long) rp->p_reg.pc,
	       (unsigned long) rp->p_reg.sp,
	       rp->p_memmap[T].mem_vir, rp->p_memmap[T].mem_phys, rp->p_memmap[T].mem_len,
	       rp->p_memmap[D].mem_vir, rp->p_memmap[D].mem_phys, rp->p_memmap[D].mem_len,
	       rp->p_memmap[S].mem_vir, rp->p_memmap[S].mem_phys, rp->p_memmap[S].mem_len,
	       click_to_round_k(size));
  }
  if (rp == END_PROC_ADDR) rp = proc; 
  else printf("--more--\r");
  oldrp = rp;
}

/*===========================================================================*
 *				proc_name    				     *
 *===========================================================================*/
PRIVATE char *proc_name(proc_nr)
int proc_nr;
{
  if (proc_nr == ANY) return "ANY";
  return cproc_addr(proc_nr)->p_name;
}