a4da2e3ec8
This incorporates a copy of dtc into the kernel source, in arch/powerpc/boot/dtc-src. This commit only imports the upstream sources verbatim, a later commit will actually link it into the kernel Makefiles and use the embedded code during the kernel build. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
328 lines
6.8 KiB
Text
328 lines
6.8 KiB
Text
/*
|
|
* (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 yylineno
|
|
|
|
%x INCLUDE
|
|
%x BYTESTRING
|
|
%x PROPNODENAME
|
|
%s V1
|
|
|
|
PROPNODECHAR [a-zA-Z0-9,._+*#?@-]
|
|
PATHCHAR ({PROPNODECHAR}|[/])
|
|
LABEL [a-zA-Z_][a-zA-Z0-9_]*
|
|
|
|
%{
|
|
#include "dtc.h"
|
|
#include "srcpos.h"
|
|
#include "dtc-parser.tab.h"
|
|
|
|
|
|
/*#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; /* = 0 */
|
|
|
|
#define BEGIN_DEFAULT() if (dts_version == 0) { \
|
|
DPRINT("<INITIAL>\n"); \
|
|
BEGIN(INITIAL); \
|
|
} else { \
|
|
DPRINT("<V1>\n"); \
|
|
BEGIN(V1); \
|
|
}
|
|
%}
|
|
|
|
%%
|
|
<*>"/include/" BEGIN(INCLUDE);
|
|
|
|
<INCLUDE>\"[^"\n]*\" {
|
|
yytext[strlen(yytext) - 1] = 0;
|
|
if (!push_input_file(yytext + 1)) {
|
|
/* Some unrecoverable error.*/
|
|
exit(1);
|
|
}
|
|
BEGIN_DEFAULT();
|
|
}
|
|
|
|
|
|
<*><<EOF>> {
|
|
if (!pop_input_file()) {
|
|
yyterminate();
|
|
}
|
|
}
|
|
|
|
<*>\"([^\\"]|\\.)*\" {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
DPRINT("String: %s\n", yytext);
|
|
yylval.data = data_copy_escape_string(yytext+1,
|
|
yyleng-2);
|
|
yylloc.first_line = yylineno;
|
|
return DT_STRING;
|
|
}
|
|
|
|
<*>"/dts-v1/" {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
DPRINT("Keyword: /dts-v1/\n");
|
|
dts_version = 1;
|
|
BEGIN_DEFAULT();
|
|
return DT_V1;
|
|
}
|
|
|
|
<*>"/memreserve/" {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
DPRINT("Keyword: /memreserve/\n");
|
|
BEGIN_DEFAULT();
|
|
return DT_MEMRESERVE;
|
|
}
|
|
|
|
<*>{LABEL}: {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
DPRINT("Label: %s\n", yytext);
|
|
yylval.labelref = strdup(yytext);
|
|
yylval.labelref[yyleng-1] = '\0';
|
|
return DT_LABEL;
|
|
}
|
|
|
|
<INITIAL>[bodh]# {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
if (*yytext == 'b')
|
|
yylval.cbase = 2;
|
|
else if (*yytext == 'o')
|
|
yylval.cbase = 8;
|
|
else if (*yytext == 'd')
|
|
yylval.cbase = 10;
|
|
else
|
|
yylval.cbase = 16;
|
|
DPRINT("Base: %d\n", yylval.cbase);
|
|
return DT_BASE;
|
|
}
|
|
|
|
<INITIAL>[0-9a-fA-F]+ {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
yylval.literal = strdup(yytext);
|
|
DPRINT("Literal: '%s'\n", yylval.literal);
|
|
return DT_LEGACYLITERAL;
|
|
}
|
|
|
|
<V1>[0-9]+|0[xX][0-9a-fA-F]+ {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
yylval.literal = strdup(yytext);
|
|
DPRINT("Literal: '%s'\n", yylval.literal);
|
|
return DT_LITERAL;
|
|
}
|
|
|
|
\&{LABEL} { /* label reference */
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
DPRINT("Ref: %s\n", yytext+1);
|
|
yylval.labelref = strdup(yytext+1);
|
|
return DT_REF;
|
|
}
|
|
|
|
"&{/"{PATHCHAR}+\} { /* new-style path reference */
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
yytext[yyleng-1] = '\0';
|
|
DPRINT("Ref: %s\n", yytext+2);
|
|
yylval.labelref = strdup(yytext+2);
|
|
return DT_REF;
|
|
}
|
|
|
|
<INITIAL>"&/"{PATHCHAR}+ { /* old-style path reference */
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
DPRINT("Ref: %s\n", yytext+1);
|
|
yylval.labelref = strdup(yytext+1);
|
|
return DT_REF;
|
|
}
|
|
|
|
<BYTESTRING>[0-9a-fA-F]{2} {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
yylval.byte = strtol(yytext, NULL, 16);
|
|
DPRINT("Byte: %02x\n", (int)yylval.byte);
|
|
return DT_BYTE;
|
|
}
|
|
|
|
<BYTESTRING>"]" {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
DPRINT("/BYTESTRING\n");
|
|
BEGIN_DEFAULT();
|
|
return ']';
|
|
}
|
|
|
|
<PROPNODENAME>{PROPNODECHAR}+ {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
DPRINT("PropNodeName: %s\n", yytext);
|
|
yylval.propnodename = strdup(yytext);
|
|
BEGIN_DEFAULT();
|
|
return DT_PROPNODENAME;
|
|
}
|
|
|
|
|
|
<*>[[:space:]]+ /* eat whitespace */
|
|
|
|
<*>"/*"([^*]|\*+[^*/])*\*+"/" {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
DPRINT("Comment: %s\n", yytext);
|
|
/* eat comments */
|
|
}
|
|
|
|
<*>"//".*\n /* eat line comments */
|
|
|
|
<*>. {
|
|
yylloc.filenum = srcpos_filenum;
|
|
yylloc.first_line = yylineno;
|
|
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];
|
|
}
|
|
|
|
%%
|
|
|
|
|
|
/*
|
|
* Stack of nested include file contexts.
|
|
*/
|
|
|
|
struct incl_file {
|
|
int filenum;
|
|
FILE *file;
|
|
YY_BUFFER_STATE yy_prev_buf;
|
|
int yy_prev_lineno;
|
|
struct incl_file *prev;
|
|
};
|
|
|
|
struct incl_file *incl_file_stack;
|
|
|
|
|
|
/*
|
|
* Detect infinite include recursion.
|
|
*/
|
|
#define MAX_INCLUDE_DEPTH (100)
|
|
|
|
static int incl_depth = 0;
|
|
|
|
|
|
int push_input_file(const char *filename)
|
|
{
|
|
FILE *f;
|
|
struct incl_file *incl_file;
|
|
|
|
if (!filename) {
|
|
yyerror("No include file name given.");
|
|
return 0;
|
|
}
|
|
|
|
if (incl_depth++ >= MAX_INCLUDE_DEPTH) {
|
|
yyerror("Includes nested too deeply");
|
|
return 0;
|
|
}
|
|
|
|
f = dtc_open_file(filename);
|
|
|
|
incl_file = malloc(sizeof(struct incl_file));
|
|
if (!incl_file) {
|
|
yyerror("Can not allocate include file space.");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Save current context.
|
|
*/
|
|
incl_file->yy_prev_buf = YY_CURRENT_BUFFER;
|
|
incl_file->yy_prev_lineno = yylineno;
|
|
incl_file->filenum = srcpos_filenum;
|
|
incl_file->file = yyin;
|
|
incl_file->prev = incl_file_stack;
|
|
|
|
incl_file_stack = incl_file;
|
|
|
|
/*
|
|
* Establish new context.
|
|
*/
|
|
srcpos_filenum = lookup_file_name(filename, 0);
|
|
yylineno = 1;
|
|
yyin = f;
|
|
yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
int pop_input_file(void)
|
|
{
|
|
struct incl_file *incl_file;
|
|
|
|
if (incl_file_stack == 0)
|
|
return 0;
|
|
|
|
fclose(yyin);
|
|
|
|
/*
|
|
* Pop.
|
|
*/
|
|
--incl_depth;
|
|
incl_file = incl_file_stack;
|
|
incl_file_stack = incl_file->prev;
|
|
|
|
/*
|
|
* Recover old context.
|
|
*/
|
|
yy_delete_buffer(YY_CURRENT_BUFFER);
|
|
yy_switch_to_buffer(incl_file->yy_prev_buf);
|
|
yylineno = incl_file->yy_prev_lineno;
|
|
srcpos_filenum = incl_file->filenum;
|
|
yyin = incl_file->file;
|
|
|
|
/*
|
|
* Free old state.
|
|
*/
|
|
free(incl_file);
|
|
|
|
if (YY_CURRENT_BUFFER == 0)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|