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![Stephen Warren](/assets/img/avatar_default.png)
This updates scripts/dtc to commit 317a5d9 "dtc: zero out new label objects" from git://git.jdl.com/software/dtc.git. This adds features such as: * /bits/ syntax for cell data. * Math expressions within cell data. * The ability to delete properties or nodes. * Support for #line directives in the input file, which allows the use of cpp on *.dts. * -i command-line option (/include/ path) * -W/-E command-line options for error/warning control. * Removal of spew to STDOUT containing the filename being compiled. * Many additions to the libfdt API. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Jon Loeliger <jdl@jdl.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
331 lines
6.2 KiB
C
331 lines
6.2 KiB
C
/*
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* Copyright 2011 The Chromium Authors, All Rights Reserved.
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* Copyright 2008 Jon Loeliger, Freescale Semiconductor, Inc.
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*
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* util_is_printable_string contributed by
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* Pantelis Antoniou <pantelis.antoniou AT gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "libfdt.h"
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#include "util.h"
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char *xstrdup(const char *s)
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{
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int len = strlen(s) + 1;
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char *dup = xmalloc(len);
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memcpy(dup, s, len);
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return dup;
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}
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char *join_path(const char *path, const char *name)
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{
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int lenp = strlen(path);
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int lenn = strlen(name);
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int len;
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int needslash = 1;
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char *str;
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len = lenp + lenn + 2;
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if ((lenp > 0) && (path[lenp-1] == '/')) {
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needslash = 0;
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len--;
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}
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str = xmalloc(len);
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memcpy(str, path, lenp);
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if (needslash) {
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str[lenp] = '/';
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lenp++;
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}
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memcpy(str+lenp, name, lenn+1);
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return str;
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}
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int util_is_printable_string(const void *data, int len)
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{
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const char *s = data;
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const char *ss;
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/* zero length is not */
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if (len == 0)
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return 0;
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/* must terminate with zero */
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if (s[len - 1] != '\0')
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return 0;
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ss = s;
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while (*s && isprint(*s))
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s++;
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/* not zero, or not done yet */
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if (*s != '\0' || (s + 1 - ss) < len)
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return 0;
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return 1;
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}
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/*
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* Parse a octal encoded character starting at index i in string s. The
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* resulting character will be returned and the index i will be updated to
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* point at the character directly after the end of the encoding, this may be
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* the '\0' terminator of the string.
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*/
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static char get_oct_char(const char *s, int *i)
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{
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char x[4];
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char *endx;
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long val;
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x[3] = '\0';
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strncpy(x, s + *i, 3);
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val = strtol(x, &endx, 8);
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assert(endx > x);
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(*i) += endx - x;
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return val;
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}
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/*
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* Parse a hexadecimal encoded character starting at index i in string s. The
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* resulting character will be returned and the index i will be updated to
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* point at the character directly after the end of the encoding, this may be
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* the '\0' terminator of the string.
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*/
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static char get_hex_char(const char *s, int *i)
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{
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char x[3];
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char *endx;
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long val;
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x[2] = '\0';
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strncpy(x, s + *i, 2);
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val = strtol(x, &endx, 16);
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if (!(endx > x))
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die("\\x used with no following hex digits\n");
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(*i) += endx - x;
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return val;
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}
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char get_escape_char(const char *s, int *i)
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{
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char c = s[*i];
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int j = *i + 1;
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char val;
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assert(c);
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switch (c) {
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case 'a':
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val = '\a';
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break;
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case 'b':
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val = '\b';
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break;
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case 't':
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val = '\t';
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break;
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case 'n':
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val = '\n';
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break;
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case 'v':
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val = '\v';
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break;
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case 'f':
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val = '\f';
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break;
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case 'r':
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val = '\r';
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break;
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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j--; /* need to re-read the first digit as
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* part of the octal value */
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val = get_oct_char(s, &j);
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break;
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case 'x':
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val = get_hex_char(s, &j);
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break;
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default:
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val = c;
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}
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(*i) = j;
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return val;
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}
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int utilfdt_read_err(const char *filename, char **buffp)
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{
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int fd = 0; /* assume stdin */
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char *buf = NULL;
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off_t bufsize = 1024, offset = 0;
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int ret = 0;
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*buffp = NULL;
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if (strcmp(filename, "-") != 0) {
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fd = open(filename, O_RDONLY);
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if (fd < 0)
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return errno;
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}
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/* Loop until we have read everything */
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buf = malloc(bufsize);
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do {
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/* Expand the buffer to hold the next chunk */
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if (offset == bufsize) {
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bufsize *= 2;
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buf = realloc(buf, bufsize);
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if (!buf) {
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ret = ENOMEM;
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break;
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}
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}
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ret = read(fd, &buf[offset], bufsize - offset);
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if (ret < 0) {
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ret = errno;
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break;
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}
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offset += ret;
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} while (ret != 0);
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/* Clean up, including closing stdin; return errno on error */
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close(fd);
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if (ret)
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free(buf);
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else
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*buffp = buf;
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return ret;
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}
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char *utilfdt_read(const char *filename)
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{
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char *buff;
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int ret = utilfdt_read_err(filename, &buff);
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if (ret) {
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fprintf(stderr, "Couldn't open blob from '%s': %s\n", filename,
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strerror(ret));
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return NULL;
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}
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/* Successful read */
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return buff;
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}
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int utilfdt_write_err(const char *filename, const void *blob)
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{
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int fd = 1; /* assume stdout */
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int totalsize;
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int offset;
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int ret = 0;
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const char *ptr = blob;
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if (strcmp(filename, "-") != 0) {
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fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
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if (fd < 0)
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return errno;
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}
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totalsize = fdt_totalsize(blob);
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offset = 0;
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while (offset < totalsize) {
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ret = write(fd, ptr + offset, totalsize - offset);
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if (ret < 0) {
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ret = -errno;
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break;
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}
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offset += ret;
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}
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/* Close the file/stdin; return errno on error */
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if (fd != 1)
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close(fd);
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return ret < 0 ? -ret : 0;
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}
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int utilfdt_write(const char *filename, const void *blob)
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{
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int ret = utilfdt_write_err(filename, blob);
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if (ret) {
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fprintf(stderr, "Couldn't write blob to '%s': %s\n", filename,
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strerror(ret));
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}
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return ret ? -1 : 0;
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}
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int utilfdt_decode_type(const char *fmt, int *type, int *size)
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{
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int qualifier = 0;
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if (!*fmt)
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return -1;
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/* get the conversion qualifier */
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*size = -1;
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if (strchr("hlLb", *fmt)) {
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qualifier = *fmt++;
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if (qualifier == *fmt) {
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switch (*fmt++) {
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/* TODO: case 'l': qualifier = 'L'; break;*/
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case 'h':
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qualifier = 'b';
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break;
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}
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}
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}
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/* we should now have a type */
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if ((*fmt == '\0') || !strchr("iuxs", *fmt))
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return -1;
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/* convert qualifier (bhL) to byte size */
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if (*fmt != 's')
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*size = qualifier == 'b' ? 1 :
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qualifier == 'h' ? 2 :
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qualifier == 'l' ? 4 : -1;
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*type = *fmt++;
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/* that should be it! */
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if (*fmt)
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return -1;
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return 0;
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}
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