From 3de18117885c4849430a9dcb1e8395777fe4bb63 Mon Sep 17 00:00:00 2001 From: naruse Date: Sat, 23 Mar 2013 16:05:51 +0000 Subject: * 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 --- addr2line.c | 454 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 441 insertions(+), 13 deletions(-) (limited to 'addr2line.c') diff --git a/addr2line.c b/addr2line.c index c0fad49885..40728cafbb 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 +#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, "*"); + * + * where 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 + * + * 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 -- cgit v1.2.3