minix/commands/sdump/sdump.c
2010-05-12 16:28:54 +00:00

192 lines
5.1 KiB
C

/* sdump - dump memory */
#include <minix/config.h>
#include <sys/types.h>
#include <minix/const.h>
#include <minix/type.h>
#include <minix/ipc.h>
#include <timers.h>
#include <signal.h>
#undef EXTERN
#define EXTERN
#include <machine/archtypes.h>
#include "pm/const.h"
#include "pm/type.h"
#include "pm/mproc.h"
#include "kernel/const.h"
#include "kernel/type.h"
#include "kernel/proc.h"
#undef printf /* printf was misdefined by the sys headers */
#include <ctype.h>
#include <fcntl.h>
#include <limits.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#define STACK_BYTES 30000
char *default_core = "core";
int stack[STACK_BYTES / sizeof (int)];
_PROTOTYPE(int main, (int argc, char **argv));
_PROTOTYPE(void read_segmap, (int fd, struct mproc *mp, long *seg_size));
_PROTOTYPE(void read_registers, (int fd, struct proc *p));
_PROTOTYPE(void dump_stack, (int fd, struct mproc *mp, long *seg_size));
_PROTOTYPE(void error, (char *s1, char *s2));
int main(argc, argv)
int argc;
char *argv[];
{
int fd;
long seg_size[NR_LOCAL_SEGS]; /* segment sizes in bytes */
struct mproc *mp;
struct proc *p;
char *file;
if (argc > 2) error("Usage: rdump [core_file]\n", "");
if (argc == 1)
file = default_core;
else
file = argv[1];
if ( (fd = open(file, O_RDONLY)) < 0) error("Cannot open", file);
mp = &mproc[0];
p = &proc[0];
read_segmap(fd, mp, seg_size);
read_registers(fd, p);
dump_stack(fd, mp, seg_size);
return(0);
}
void read_segmap(fd, mp, seg_size)
int fd;
struct mproc *mp;
long seg_size[NR_LOCAL_SEGS];
{
int i, segmap_size;
/* Read in the segment map. */
segmap_size = sizeof mp->mp_seg;
if (read(fd, (char *) mp, segmap_size) != segmap_size)
error("Cannot read segmap map from core image file", "");
for (i = 0; i < NR_LOCAL_SEGS; i++)
seg_size[i] = (long) mp->mp_seg[i].mem_len << CLICK_SHIFT;
printf("Seg sizes in bytes: Text: %ld Data: %ld, Stack: %ld\n",
seg_size[T], seg_size[D], seg_size[S]);
}
void read_registers(fd, p)
int fd;
struct proc *p;
{
int proctblsize;
struct stackframe_s r;
proctblsize = sizeof (struct proc);
if (read(fd, (char *) p, proctblsize) != proctblsize)
error("Cannot read process table from core image file", "");
r = p->p_reg;
/* Print proc table. */
printf("\n");
#if (CHIP == INTEL)
#if _WORD_SIZE == 4
printf("eax=%8lX ebx=%8lX ecx=%8lX edx=%8lX\n",
r.retreg, r.bx, r.cx, r.dx);
printf("esi=%8lX edi=%8lX ebp=%8lX esp=%8lX eip=%8lX\n",
r.si, r.di, r.fp, r.sp, r.pc);
printf(" ds=%8lX es=%8lX ss=%8lX cs=%8lX\n",
r.ds, r.es, r.ss, r.cs);
printf(" fs=%8lX gs=%8lX ef=%8lX\n",
r.fs, r.gs, r.psw);
#else
printf(
"ax=%4X bx=%4X cx=%4X dx=%4X si=%4X di=%4X bp=%4X sp=%4X ip=%4X\n",
r.retreg, r.bx, r.cx, r.dx, r.si, r.di, r.fp, r.sp, r.pc);
printf(
" f=%4X ds=%4X es=%4X ss=%4X cs=%4X\n",
r.psw, r.ds, r.es, r.ss, r.cs);
#endif
#endif /* (CHIP == INTEL) */
#if (CHIP == M68000)
printf("pc=%8lx psw=%4x\n", r.pc, r.psw);
printf("d0=%8lx d1=%8lx d2=%8lx d3=%8lx\n", r.retreg, r.d1, r.d2, r.d3);
printf("d4=%8lx d5=%8lx d6=%8lx d7=%8lx\n", r.d4, r.d5, r.d6, r.d7);
printf("a0=%8lx a1=%8lx a2=%8lx a3=%8lx\n", r.a0, r.a1, r.a2, r.a3);
printf("a4=%8lx a5=%8lx a6=%8lx a7=%8lx\n", r.a4, r.a5, r.a6, r.sp);
#endif
printf("\n");
}
void dump_stack(fd, mp, seg_size)
int fd;
struct mproc *mp;
long seg_size[NR_LOCAL_SEGS];
{
unsigned char ch;
char format[32];
int word, i, stack_size, j;
vir_bytes v, vi;
/* Seek past text and data segments. */
lseek(fd, seg_size[T] + seg_size[D], SEEK_CUR);
v = mp->mp_seg[S].mem_vir << CLICK_SHIFT;
stack_size = (int) seg_size[S];
if (stack_size != seg_size[S] || stack_size < 0 || stack_size > STACK_BYTES)
error("Stack too large", "");
/* Dump the stack. */
if (read(fd, (char *) stack, stack_size) != stack_size)
error("Error reading stack from core file", "");
#define BYTES(num) ((unsigned) sizeof (num))
#define DEC_DIGITS(num) (sizeof (num) <= 2 ? 6 : 11) /* for 16/32 bit num */
#define HEX_DIGITS(num) (((unsigned) sizeof (num) * CHAR_BIT + 3) / 4)
printf("%*s %*s %*s %*s\n",
HEX_DIGITS(vi), "Addr",
HEX_DIGITS(word), "Hex",
DEC_DIGITS(word), "Dec",
BYTES(word), "Char");
/* The format string depends messily on the size of various things. */
strcpy(format, "%*");
if (sizeof v > sizeof (int)) strcat(format, "l");
strcat(format, "X: %*");
if (sizeof word > sizeof (int)) strcat(format, "l");
strcat(format, "X %*");
if (sizeof word > sizeof (int)) strcat(format, "l");
strcat(format, "d ");
for (i = stack_size / sizeof (int) - 1, vi = v + stack_size - sizeof (int);
i >= 0; --i, vi -= sizeof (int)) {
word = stack[i];
printf(format,
HEX_DIGITS(vi), vi,
HEX_DIGITS(word), word,
DEC_DIGITS(word), word);
for (j = 0; j < BYTES(word); ++j, word >>= CHAR_BIT) {
ch = (unsigned char) word;
if (!isprint(ch)) ch = '.';
putchar(ch);
}
putchar('\n');
}
}
void error(s1, s2)
char *s1, *s2;
{
printf("%s %s\n", s1, s2);
exit(1);
}