304 lines
6.7 KiB
Plaintext
304 lines
6.7 KiB
Plaintext
/*
|
|
* (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 INCLUDE
|
|
%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"
|
|
|
|
#define MAX_INCLUDE_NESTING 100
|
|
YY_BUFFER_STATE include_stack[MAX_INCLUDE_NESTING];
|
|
int include_stack_pointer = 0;
|
|
|
|
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);
|
|
static void lexical_error(const char *fmt, ...);
|
|
%}
|
|
|
|
%%
|
|
<*>"/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, *tmp, *fn;
|
|
/* skip text before line # */
|
|
line = yytext;
|
|
while (!isdigit((unsigned char)*line))
|
|
line++;
|
|
/* skip digits in line # */
|
|
tmp = line;
|
|
while (!isspace((unsigned char)*tmp))
|
|
tmp++;
|
|
/* "NULL"-terminate line # */
|
|
*tmp = '\0';
|
|
/* start of filename */
|
|
fn = strchr(tmp + 1, '"') + 1;
|
|
/* strip trailing " from filename */
|
|
tmp = strchr(fn, '"');
|
|
*tmp = 0;
|
|
/* -1 since #line is the number of the next line */
|
|
srcpos_set_line(xstrdup(fn), atoi(line) - 1);
|
|
}
|
|
|
|
<*><<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;
|
|
}
|
|
|
|
<*>"/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);
|
|
|
|
assert(!(*e) || !e[strspn(e, "UL")]);
|
|
|
|
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;
|
|
return DT_CHAR_LITERAL;
|
|
}
|
|
|
|
yylval.integer = (unsigned char)d.val[0];
|
|
|
|
if (d.len > 2)
|
|
lexical_error("Character literal has %d"
|
|
" characters instead of 1",
|
|
d.len - 1);
|
|
|
|
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);
|
|
|
|
assert(include_stack_pointer < MAX_INCLUDE_NESTING);
|
|
|
|
srcfile_push(filename);
|
|
|
|
yyin = current_srcfile->f;
|
|
|
|
include_stack[include_stack_pointer++] = YY_CURRENT_BUFFER;
|
|
|
|
yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
|
|
}
|
|
|
|
|
|
static bool pop_input_file(void)
|
|
{
|
|
if (srcfile_pop() == 0)
|
|
return false;
|
|
|
|
assert(include_stack_pointer > 0);
|
|
|
|
yy_delete_buffer( YY_CURRENT_BUFFER );
|
|
|
|
yy_switch_to_buffer( include_stack[--include_stack_pointer] );
|
|
|
|
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;
|
|
}
|