scripts/dtc: Update to upstream version v1.4.3
Using the update-dtc-source.sh script from Linux v4.14-rc1 import the
portions of dtc that we require. We bring in update-dtc-source.sh and
scripts/dtc/Makefile from Linux v4.14-rc1. Rework DTC_FLAGS handling to
not require a test.
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/scripts/dtc/dtc-lexer.l b/scripts/dtc/dtc-lexer.l
new file mode 100644
index 0000000..52bed7b
--- /dev/null
+++ b/scripts/dtc/dtc-lexer.l
@@ -0,0 +1,311 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+%option noyywrap nounput noinput never-interactive
+
+%x BYTESTRING
+%x PROPNODENAME
+%s V1
+
+PROPNODECHAR [a-zA-Z0-9,._+*#?@-]
+PATHCHAR ({PROPNODECHAR}|[/])
+LABEL [a-zA-Z_][a-zA-Z0-9_]*
+STRING \"([^\\"]|\\.)*\"
+CHAR_LITERAL '([^']|\\')*'
+WS [[:space:]]
+COMMENT "/*"([^*]|\*+[^*/])*\*+"/"
+LINECOMMENT "//".*\n
+
+%{
+#include "dtc.h"
+#include "srcpos.h"
+#include "dtc-parser.tab.h"
+
+YYLTYPE yylloc;
+extern bool treesource_error;
+
+/* CAUTION: this will stop working if we ever use yyless() or yyunput() */
+#define YY_USER_ACTION \
+ { \
+ srcpos_update(&yylloc, yytext, yyleng); \
+ }
+
+/*#define LEXDEBUG 1*/
+
+#ifdef LEXDEBUG
+#define DPRINT(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
+#else
+#define DPRINT(fmt, ...) do { } while (0)
+#endif
+
+static int dts_version = 1;
+
+#define BEGIN_DEFAULT() DPRINT("<V1>\n"); \
+ BEGIN(V1); \
+
+static void push_input_file(const char *filename);
+static bool pop_input_file(void);
+#ifdef __GNUC__
+static void lexical_error(const char *fmt, ...)
+ __attribute__((format (printf, 1, 2)));
+#else
+static void lexical_error(const char *fmt, ...);
+#endif
+
+%}
+
+%%
+<*>"/include/"{WS}*{STRING} {
+ char *name = strchr(yytext, '\"') + 1;
+ yytext[yyleng-1] = '\0';
+ push_input_file(name);
+ }
+
+<*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
+ char *line, *fnstart, *fnend;
+ struct data fn;
+ /* skip text before line # */
+ line = yytext;
+ while (!isdigit((unsigned char)*line))
+ line++;
+
+ /* regexp ensures that first and list "
+ * in the whole yytext are those at
+ * beginning and end of the filename string */
+ fnstart = memchr(yytext, '"', yyleng);
+ for (fnend = yytext + yyleng - 1;
+ *fnend != '"'; fnend--)
+ ;
+ assert(fnstart && fnend && (fnend > fnstart));
+
+ fn = data_copy_escape_string(fnstart + 1,
+ fnend - fnstart - 1);
+
+ /* Don't allow nuls in filenames */
+ if (memchr(fn.val, '\0', fn.len - 1))
+ lexical_error("nul in line number directive");
+
+ /* -1 since #line is the number of the next line */
+ srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
+ data_free(fn);
+ }
+
+<*><<EOF>> {
+ if (!pop_input_file()) {
+ yyterminate();
+ }
+ }
+
+<*>{STRING} {
+ DPRINT("String: %s\n", yytext);
+ yylval.data = data_copy_escape_string(yytext+1,
+ yyleng-2);
+ return DT_STRING;
+ }
+
+<*>"/dts-v1/" {
+ DPRINT("Keyword: /dts-v1/\n");
+ dts_version = 1;
+ BEGIN_DEFAULT();
+ return DT_V1;
+ }
+
+<*>"/plugin/" {
+ DPRINT("Keyword: /plugin/\n");
+ return DT_PLUGIN;
+ }
+
+<*>"/memreserve/" {
+ DPRINT("Keyword: /memreserve/\n");
+ BEGIN_DEFAULT();
+ return DT_MEMRESERVE;
+ }
+
+<*>"/bits/" {
+ DPRINT("Keyword: /bits/\n");
+ BEGIN_DEFAULT();
+ return DT_BITS;
+ }
+
+<*>"/delete-property/" {
+ DPRINT("Keyword: /delete-property/\n");
+ DPRINT("<PROPNODENAME>\n");
+ BEGIN(PROPNODENAME);
+ return DT_DEL_PROP;
+ }
+
+<*>"/delete-node/" {
+ DPRINT("Keyword: /delete-node/\n");
+ DPRINT("<PROPNODENAME>\n");
+ BEGIN(PROPNODENAME);
+ return DT_DEL_NODE;
+ }
+
+<*>{LABEL}: {
+ DPRINT("Label: %s\n", yytext);
+ yylval.labelref = xstrdup(yytext);
+ yylval.labelref[yyleng-1] = '\0';
+ return DT_LABEL;
+ }
+
+<V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? {
+ char *e;
+ DPRINT("Integer Literal: '%s'\n", yytext);
+
+ errno = 0;
+ yylval.integer = strtoull(yytext, &e, 0);
+
+ if (*e && e[strspn(e, "UL")]) {
+ lexical_error("Bad integer literal '%s'",
+ yytext);
+ }
+
+ if (errno == ERANGE)
+ lexical_error("Integer literal '%s' out of range",
+ yytext);
+ else
+ /* ERANGE is the only strtoull error triggerable
+ * by strings matching the pattern */
+ assert(errno == 0);
+ return DT_LITERAL;
+ }
+
+<*>{CHAR_LITERAL} {
+ struct data d;
+ DPRINT("Character literal: %s\n", yytext);
+
+ d = data_copy_escape_string(yytext+1, yyleng-2);
+ if (d.len == 1) {
+ lexical_error("Empty character literal");
+ yylval.integer = 0;
+ } else {
+ yylval.integer = (unsigned char)d.val[0];
+
+ if (d.len > 2)
+ lexical_error("Character literal has %d"
+ " characters instead of 1",
+ d.len - 1);
+ }
+
+ data_free(d);
+ return DT_CHAR_LITERAL;
+ }
+
+<*>\&{LABEL} { /* label reference */
+ DPRINT("Ref: %s\n", yytext+1);
+ yylval.labelref = xstrdup(yytext+1);
+ return DT_REF;
+ }
+
+<*>"&{/"{PATHCHAR}*\} { /* new-style path reference */
+ yytext[yyleng-1] = '\0';
+ DPRINT("Ref: %s\n", yytext+2);
+ yylval.labelref = xstrdup(yytext+2);
+ return DT_REF;
+ }
+
+<BYTESTRING>[0-9a-fA-F]{2} {
+ yylval.byte = strtol(yytext, NULL, 16);
+ DPRINT("Byte: %02x\n", (int)yylval.byte);
+ return DT_BYTE;
+ }
+
+<BYTESTRING>"]" {
+ DPRINT("/BYTESTRING\n");
+ BEGIN_DEFAULT();
+ return ']';
+ }
+
+<PROPNODENAME>\\?{PROPNODECHAR}+ {
+ DPRINT("PropNodeName: %s\n", yytext);
+ yylval.propnodename = xstrdup((yytext[0] == '\\') ?
+ yytext + 1 : yytext);
+ BEGIN_DEFAULT();
+ return DT_PROPNODENAME;
+ }
+
+"/incbin/" {
+ DPRINT("Binary Include\n");
+ return DT_INCBIN;
+ }
+
+<*>{WS}+ /* eat whitespace */
+<*>{COMMENT}+ /* eat C-style comments */
+<*>{LINECOMMENT}+ /* eat C++-style comments */
+
+<*>"<<" { return DT_LSHIFT; };
+<*>">>" { return DT_RSHIFT; };
+<*>"<=" { return DT_LE; };
+<*>">=" { return DT_GE; };
+<*>"==" { return DT_EQ; };
+<*>"!=" { return DT_NE; };
+<*>"&&" { return DT_AND; };
+<*>"||" { return DT_OR; };
+
+<*>. {
+ DPRINT("Char: %c (\\x%02x)\n", yytext[0],
+ (unsigned)yytext[0]);
+ if (yytext[0] == '[') {
+ DPRINT("<BYTESTRING>\n");
+ BEGIN(BYTESTRING);
+ }
+ if ((yytext[0] == '{')
+ || (yytext[0] == ';')) {
+ DPRINT("<PROPNODENAME>\n");
+ BEGIN(PROPNODENAME);
+ }
+ return yytext[0];
+ }
+
+%%
+
+static void push_input_file(const char *filename)
+{
+ assert(filename);
+
+ srcfile_push(filename);
+
+ yyin = current_srcfile->f;
+
+ yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
+}
+
+
+static bool pop_input_file(void)
+{
+ if (srcfile_pop() == 0)
+ return false;
+
+ yypop_buffer_state();
+ yyin = current_srcfile->f;
+
+ return true;
+}
+
+static void lexical_error(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ srcpos_verror(&yylloc, "Lexical error", fmt, ap);
+ va_end(ap);
+
+ treesource_error = true;
+}