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/*
* This file is part of ltrace.
* Copyright (C) 2003,2008,2009 Juan Cespedes
* Copyright (C) 2006 Ian Wienand
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <stdio.h>
#include <stdarg.h>
#include "common.h"
void
debug_(int level, const char *file, int line, const char *fmt, ...) {
char buf[1024];
va_list args;
if (!(options.debug & level)) {
return;
}
va_start(args, fmt);
vsnprintf(buf, 1024, fmt, args);
va_end(args);
output_line(NULL, "DEBUG: %s:%d: %s", file, line, buf);
fflush(options.output);
}
/*
* The following section provides a way to print things, like hex dumps,
* with out using buffered output. This was written by Steve Munroe of IBM.
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/ptrace.h>
static int
xwritehexl(long i) {
int rc = 0;
char text[17];
int j;
unsigned long temp = (unsigned long)i;
for (j = 15; j >= 0; j--) {
char c;
c = (char)((temp & 0x0f) + '0');
if (c > '9') {
c = (char)(c + ('a' - '9' - 1));
}
text[j] = c;
temp = temp >> 4;
}
rc = write(1, text, 16);
return rc;
}
static int
xwritec(char c) {
char temp = c;
char *text = &temp;
int rc = 0;
rc = write(1, text, 1);
return rc;
}
static int
xwritecr(void) {
return xwritec('\n');
}
static int
xwritedump(void *ptr, long addr, int len) {
int rc = 0;
long *tprt = (long *)ptr;
int i;
for (i = 0; i < len; i += 8) {
xwritehexl(addr);
xwritec('-');
xwritec('>');
xwritehexl(*tprt++);
xwritecr();
addr += sizeof(long);
}
return rc;
}
int
xinfdump(long pid, void *ptr, int len) {
int rc;
int i;
long wrdcnt;
long *infwords;
long addr;
wrdcnt = len / sizeof(long) + 1;
infwords = malloc(wrdcnt * sizeof(long));
if (!infwords) {
perror("ltrace: malloc");
exit(1);
}
addr = (long)ptr;
addr = ((addr + sizeof(long) - 1) / sizeof(long)) * sizeof(long);
for (i = 0; i < wrdcnt; ++i) {
infwords[i] = ptrace(PTRACE_PEEKTEXT, pid, (void *)addr, NULL);
addr += sizeof(long);
}
rc = xwritedump(infwords, (long)ptr, len);
free(infwords);
return rc;
}
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