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authornaruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2013-03-23 16:05:51 (GMT)
committernaruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2013-03-23 16:05:51 (GMT)
commit3de18117885c4849430a9dcb1e8395777fe4bb63 (patch)
treec1b28b38fd243ce1557ef13287598f4a2824e073 /addr2line.c
parente8f9b6647aead1dc3e2ccd7e6bea05dd2b67ea86 (diff)
* addr2line.c (kprintf): added from FreeBSD libstand's printf.
this is consided as async signal safe function. * addr2line.c (rb_dump_backtrace_with_lines): use kfprintf. [Bug #8144] [ruby-core:53632] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39887 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'addr2line.c')
-rw-r--r--addr2line.c454
1 files changed, 441 insertions, 13 deletions
diff --git a/addr2line.c b/addr2line.c
index c0fad49..40728ca 100644
--- a/addr2line.c
+++ b/addr2line.c
@@ -90,6 +90,8 @@ void *alloca();
#define PATH_MAX 4096
#endif
+int kprintf(const char *fmt, ...);
+
typedef struct {
const char *dirname;
const char *filename;
@@ -153,7 +155,7 @@ get_nth_dirname(unsigned long dir, char *p)
while (*p) p++;
p++;
if (!*p) {
- fprintf(stderr, "Unexpected directory number %lu in %s\n",
+ kprintf("Unexpected directory number %lu in %s\n",
dir, binary_filename);
return "";
}
@@ -173,7 +175,7 @@ fill_filename(int file, char *include_directories, char *filenames,
filename = p;
if (!*p) {
/* Need to output binary file name? */
- fprintf(stderr, "Unexpected file number %d in %s\n",
+ kprintf("Unexpected file number %d in %s\n",
file, binary_filename);
return;
}
@@ -375,7 +377,7 @@ parse_debug_line_cu(int num_traces, void **traces,
p += sizeof(unsigned long);
break;
case DW_LNE_define_file:
- fprintf(stderr, "Unsupported operation in %s\n",
+ kprintf("Unsupported operation in %s\n",
binary_filename);
break;
case DW_LNE_set_discriminator:
@@ -383,7 +385,7 @@ parse_debug_line_cu(int num_traces, void **traces,
uleb128(&p);
break;
default:
- fprintf(stderr, "Unknown extended opcode: %d in %s\n",
+ kprintf("Unknown extended opcode: %d in %s\n",
op, binary_filename);
}
break;
@@ -411,7 +413,7 @@ parse_debug_line(int num_traces, void **traces,
parse_debug_line_cu(num_traces, traces, &debug_line, lines);
}
if (debug_line != debug_line_end) {
- fprintf(stderr, "Unexpected size of .debug_line in %s\n",
+ kprintf("Unexpected size of .debug_line in %s\n",
binary_filename);
}
}
@@ -473,13 +475,13 @@ fill_lines(int num_traces, void **traces, char **syms, int check_debuglink,
if (filesize < 0) {
int e = errno;
close(fd);
- fprintf(stderr, "lseek: %s\n", strerror(e));
+ kprintf("lseek: %s\n", strerror(e));
return;
}
#if SIZEOF_OFF_T > SIZEOF_SIZE_T
if (filesize > (off_t)SIZE_MAX) {
close(fd);
- fprintf(stderr, "Too large file %s\n", binary_filename);
+ kprintf("Too large file %s\n", binary_filename);
return;
}
#endif
@@ -489,7 +491,7 @@ fill_lines(int num_traces, void **traces, char **syms, int check_debuglink,
if (file == MAP_FAILED) {
int e = errno;
close(fd);
- fprintf(stderr, "mmap: %s\n", strerror(e));
+ kprintf("mmap: %s\n", strerror(e));
return;
}
@@ -614,23 +616,22 @@ rb_dump_backtrace_with_lines(int num_traces, void **trace, char **syms)
fill_lines(num_traces, trace, syms, 1, &lines[i], lines);
}
- /* fprintf may not be async-signal safe */
for (i = 0; i < num_traces; i++) {
line_info_t *line = &lines[i];
if (line->line > 0) {
if (line->filename) {
if (line->dirname && line->dirname[0]) {
- fprintf(stderr, "%s %s/%s:%d\n", syms[i], line->dirname, line->filename, line->line);
+ kprintf("%s %s/%s:%d\n", syms[i], line->dirname, line->filename, line->line);
}
else {
- fprintf(stderr, "%s %s:%d\n", syms[i], line->filename, line->line);
+ kprintf("%s %s:%d\n", syms[i], line->filename, line->line);
}
} else {
- fprintf(stderr, "%s ???:%d\n", syms[i], line->line);
+ kprintf("%s ???:%d\n", syms[i], line->line);
}
} else {
- fprintf(stderr, "%s\n", syms[i]);
+ kprintf("%s\n", syms[i]);
}
}
@@ -644,6 +645,433 @@ rb_dump_backtrace_with_lines(int num_traces, void **trace, char **syms)
free(lines);
}
+/* From FreeBSD's lib/libstand/printf.c */
+/*-
+ * Copyright (c) 1986, 1988, 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)subr_prf.c 8.3 (Berkeley) 1/21/94
+ */
+
+#include <stdarg.h>
+#define MAXNBUF (sizeof(intmax_t) * CHAR_BIT + 1)
+extern int rb_toupper(int c);
+#define toupper(c) rb_toupper(c)
+#define hex2ascii(hex) (hex2ascii_data[hex])
+char const hex2ascii_data[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+static __inline int imax(int a, int b) { return (a > b ? a : b); }
+static int kvprintf(char const *fmt, void (*func)(int), void *arg, int radix, va_list ap);
+
+static void putce(int c)
+{
+ char s[1];
+ s[0] = (char)c;
+ write(2, s, 1);
+}
+
+int
+kprintf(const char *fmt, ...)
+{
+ va_list ap;
+ int retval;
+
+ va_start(ap, fmt);
+ retval = kvprintf(fmt, putce, NULL, 10, ap);
+ va_end(ap);
+ return retval;
+}
+
+/*
+ * Put a NUL-terminated ASCII number (base <= 36) in a buffer in reverse
+ * order; return an optional length and a pointer to the last character
+ * written in the buffer (i.e., the first character of the string).
+ * The buffer pointed to by `nbuf' must have length >= MAXNBUF.
+ */
+static char *
+ksprintn(char *nbuf, uintmax_t num, int base, int *lenp, int upper)
+{
+ char *p, c;
+
+ p = nbuf;
+ *p = '\0';
+ do {
+ c = hex2ascii(num % base);
+ *++p = upper ? toupper(c) : c;
+ } while (num /= base);
+ if (lenp)
+ *lenp = p - nbuf;
+ return (p);
+}
+
+/*
+ * Scaled down version of printf(3).
+ *
+ * Two additional formats:
+ *
+ * The format %b is supported to decode error registers.
+ * Its usage is:
+ *
+ * printf("reg=%b\n", regval, "<base><arg>*");
+ *
+ * where <base> is the output base expressed as a control character, e.g.
+ * \10 gives octal; \20 gives hex. Each arg is a sequence of characters,
+ * the first of which gives the bit number to be inspected (origin 1), and
+ * the next characters (up to a control character, i.e. a character <= 32),
+ * give the name of the register. Thus:
+ *
+ * kvprintf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n");
+ *
+ * would produce output:
+ *
+ * reg=3<BITTWO,BITONE>
+ *
+ * XXX: %D -- Hexdump, takes pointer and separator string:
+ * ("%6D", ptr, ":") -> XX:XX:XX:XX:XX:XX
+ * ("%*D", len, ptr, " " -> XX XX XX XX ...
+ */
+static int
+kvprintf(char const *fmt, void (*func)(int), void *arg, int radix, va_list ap)
+{
+#define PCHAR(c) {int cc=(c); if (func) (*func)(cc); else *d++ = cc; retval++; }
+ char nbuf[MAXNBUF];
+ char *d;
+ const char *p, *percent, *q;
+ u_char *up;
+ int ch, n;
+ uintmax_t num;
+ int base, lflag, qflag, tmp, width, ladjust, sharpflag, neg, sign, dot;
+ int cflag, hflag, jflag, tflag, zflag;
+ int dwidth, upper;
+ char padc;
+ int stop = 0, retval = 0;
+
+ num = 0;
+ if (!func)
+ d = (char *) arg;
+ else
+ d = NULL;
+
+ if (fmt == NULL)
+ fmt = "(fmt null)\n";
+
+ if (radix < 2 || radix > 36)
+ radix = 10;
+
+ for (;;) {
+ padc = ' ';
+ width = 0;
+ while ((ch = (u_char)*fmt++) != '%' || stop) {
+ if (ch == '\0')
+ return (retval);
+ PCHAR(ch);
+ }
+ percent = fmt - 1;
+ qflag = 0; lflag = 0; ladjust = 0; sharpflag = 0; neg = 0;
+ sign = 0; dot = 0; dwidth = 0; upper = 0;
+ cflag = 0; hflag = 0; jflag = 0; tflag = 0; zflag = 0;
+reswitch: switch (ch = (u_char)*fmt++) {
+ case '.':
+ dot = 1;
+ goto reswitch;
+ case '#':
+ sharpflag = 1;
+ goto reswitch;
+ case '+':
+ sign = 1;
+ goto reswitch;
+ case '-':
+ ladjust = 1;
+ goto reswitch;
+ case '%':
+ PCHAR(ch);
+ break;
+ case '*':
+ if (!dot) {
+ width = va_arg(ap, int);
+ if (width < 0) {
+ ladjust = !ladjust;
+ width = -width;
+ }
+ } else {
+ dwidth = va_arg(ap, int);
+ }
+ goto reswitch;
+ case '0':
+ if (!dot) {
+ padc = '0';
+ goto reswitch;
+ }
+ case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ for (n = 0;; ++fmt) {
+ n = n * 10 + ch - '0';
+ ch = *fmt;
+ if (ch < '0' || ch > '9')
+ break;
+ }
+ if (dot)
+ dwidth = n;
+ else
+ width = n;
+ goto reswitch;
+ case 'b':
+ num = (u_int)va_arg(ap, int);
+ p = va_arg(ap, char *);
+ for (q = ksprintn(nbuf, num, *p++, NULL, 0); *q;)
+ PCHAR(*q--);
+
+ if (num == 0)
+ break;
+
+ for (tmp = 0; *p;) {
+ n = *p++;
+ if (num & (1 << (n - 1))) {
+ PCHAR(tmp ? ',' : '<');
+ for (; (n = *p) > ' '; ++p)
+ PCHAR(n);
+ tmp = 1;
+ } else
+ for (; *p > ' '; ++p)
+ continue;
+ }
+ if (tmp)
+ PCHAR('>');
+ break;
+ case 'c':
+ PCHAR(va_arg(ap, int));
+ break;
+ case 'D':
+ up = va_arg(ap, u_char *);
+ p = va_arg(ap, char *);
+ if (!width)
+ width = 16;
+ while(width--) {
+ PCHAR(hex2ascii(*up >> 4));
+ PCHAR(hex2ascii(*up & 0x0f));
+ up++;
+ if (width)
+ for (q=p;*q;q++)
+ PCHAR(*q);
+ }
+ break;
+ case 'd':
+ case 'i':
+ base = 10;
+ sign = 1;
+ goto handle_sign;
+ case 'h':
+ if (hflag) {
+ hflag = 0;
+ cflag = 1;
+ } else
+ hflag = 1;
+ goto reswitch;
+ case 'j':
+ jflag = 1;
+ goto reswitch;
+ case 'l':
+ if (lflag) {
+ lflag = 0;
+ qflag = 1;
+ } else
+ lflag = 1;
+ goto reswitch;
+ case 'n':
+ if (jflag)
+ *(va_arg(ap, intmax_t *)) = retval;
+ else if (qflag)
+ *(va_arg(ap, quad_t *)) = retval;
+ else if (lflag)
+ *(va_arg(ap, long *)) = retval;
+ else if (zflag)
+ *(va_arg(ap, size_t *)) = retval;
+ else if (hflag)
+ *(va_arg(ap, short *)) = retval;
+ else if (cflag)
+ *(va_arg(ap, char *)) = retval;
+ else
+ *(va_arg(ap, int *)) = retval;
+ break;
+ case 'o':
+ base = 8;
+ goto handle_nosign;
+ case 'p':
+ base = 16;
+ sharpflag = (width == 0);
+ sign = 0;
+ num = (uintptr_t)va_arg(ap, void *);
+ goto number;
+ case 'q':
+ qflag = 1;
+ goto reswitch;
+ case 'r':
+ base = radix;
+ if (sign)
+ goto handle_sign;
+ goto handle_nosign;
+ case 's':
+ p = va_arg(ap, char *);
+ if (p == NULL)
+ p = "(null)";
+ if (!dot)
+ n = strlen (p);
+ else
+ for (n = 0; n < dwidth && p[n]; n++)
+ continue;
+
+ width -= n;
+
+ if (!ladjust && width > 0)
+ while (width--)
+ PCHAR(padc);
+ while (n--)
+ PCHAR(*p++);
+ if (ladjust && width > 0)
+ while (width--)
+ PCHAR(padc);
+ break;
+ case 't':
+ tflag = 1;
+ goto reswitch;
+ case 'u':
+ base = 10;
+ goto handle_nosign;
+ case 'X':
+ upper = 1;
+ case 'x':
+ base = 16;
+ goto handle_nosign;
+ case 'y':
+ base = 16;
+ sign = 1;
+ goto handle_sign;
+ case 'z':
+ zflag = 1;
+ goto reswitch;
+handle_nosign:
+ sign = 0;
+ if (jflag)
+ num = va_arg(ap, uintmax_t);
+ else if (qflag)
+ num = va_arg(ap, u_quad_t);
+ else if (tflag)
+ num = va_arg(ap, ptrdiff_t);
+ else if (lflag)
+ num = va_arg(ap, u_long);
+ else if (zflag)
+ num = va_arg(ap, size_t);
+ else if (hflag)
+ num = (u_short)va_arg(ap, int);
+ else if (cflag)
+ num = (u_char)va_arg(ap, int);
+ else
+ num = va_arg(ap, u_int);
+ goto number;
+handle_sign:
+ if (jflag)
+ num = va_arg(ap, intmax_t);
+ else if (qflag)
+ num = va_arg(ap, quad_t);
+ else if (tflag)
+ num = va_arg(ap, ptrdiff_t);
+ else if (lflag)
+ num = va_arg(ap, long);
+ else if (zflag)
+ num = va_arg(ap, ssize_t);
+ else if (hflag)
+ num = (short)va_arg(ap, int);
+ else if (cflag)
+ num = (char)va_arg(ap, int);
+ else
+ num = va_arg(ap, int);
+number:
+ if (sign && (intmax_t)num < 0) {
+ neg = 1;
+ num = -(intmax_t)num;
+ }
+ p = ksprintn(nbuf, num, base, &n, upper);
+ tmp = 0;
+ if (sharpflag && num != 0) {
+ if (base == 8)
+ tmp++;
+ else if (base == 16)
+ tmp += 2;
+ }
+ if (neg)
+ tmp++;
+
+ if (!ladjust && padc == '0')
+ dwidth = width - tmp;
+ width -= tmp + imax(dwidth, n);
+ dwidth -= n;
+ if (!ladjust)
+ while (width-- > 0)
+ PCHAR(' ');
+ if (neg)
+ PCHAR('-');
+ if (sharpflag && num != 0) {
+ if (base == 8) {
+ PCHAR('0');
+ } else if (base == 16) {
+ PCHAR('0');
+ PCHAR('x');
+ }
+ }
+ while (dwidth-- > 0)
+ PCHAR('0');
+
+ while (*p)
+ PCHAR(*p--);
+
+ if (ladjust)
+ while (width-- > 0)
+ PCHAR(' ');
+
+ break;
+ default:
+ while (percent < fmt)
+ PCHAR(*percent++);
+ /*
+ * Since we ignore an formatting argument it is no
+ * longer safe to obey the remaining formatting
+ * arguments as the arguments will no longer match
+ * the format specs.
+ */
+ stop = 1;
+ break;
+ }
+ }
+#undef PCHAR
+}
#else /* defined(USE_ELF) */
#error not supported
#endif