summaryrefslogtreecommitdiff
path: root/arch/powerpc/boot/dtc-src/dtc-lexer.l
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/boot/dtc-src/dtc-lexer.l')
-rw-r--r--arch/powerpc/boot/dtc-src/dtc-lexer.l120
1 files changed, 56 insertions, 64 deletions
diff --git a/arch/powerpc/boot/dtc-src/dtc-lexer.l b/arch/powerpc/boot/dtc-src/dtc-lexer.l
index c811b221b31e..44dbfd3f0976 100644
--- a/arch/powerpc/boot/dtc-src/dtc-lexer.l
+++ b/arch/powerpc/boot/dtc-src/dtc-lexer.l
@@ -28,6 +28,10 @@
PROPNODECHAR [a-zA-Z0-9,._+*#?@-]
PATHCHAR ({PROPNODECHAR}|[/])
LABEL [a-zA-Z_][a-zA-Z0-9_]*
+STRING \"([^\\"]|\\.)*\"
+WS [[:space:]]
+COMMENT "/*"([^*]|\*+[^*/])*\*+"/"
+LINECOMMENT "//".*\n
%{
#include "dtc.h"
@@ -52,29 +56,26 @@ static int dts_version; /* = 0 */
DPRINT("<V1>\n"); \
BEGIN(V1); \
}
+
+static void push_input_file(const char *filename);
+static int pop_input_file(void);
%}
%%
-<*>"/include/" BEGIN(INCLUDE);
-
-<INCLUDE>\"[^"\n]*\" {
- yytext[strlen(yytext) - 1] = 0;
- if (!push_input_file(yytext + 1)) {
- /* Some unrecoverable error.*/
- exit(1);
- }
- BEGIN_DEFAULT();
+<*>"/include/"{WS}*{STRING} {
+ char *name = strchr(yytext, '\"') + 1;
+ yytext[yyleng-1] = '\0';
+ push_input_file(name);
}
-
<*><<EOF>> {
if (!pop_input_file()) {
yyterminate();
}
}
-<*>\"([^\\"]|\\.)*\" {
- yylloc.filenum = srcpos_filenum;
+<*>{STRING} {
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
DPRINT("String: %s\n", yytext);
yylval.data = data_copy_escape_string(yytext+1,
@@ -84,7 +85,7 @@ static int dts_version; /* = 0 */
}
<*>"/dts-v1/" {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
DPRINT("Keyword: /dts-v1/\n");
dts_version = 1;
@@ -93,7 +94,7 @@ static int dts_version; /* = 0 */
}
<*>"/memreserve/" {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
DPRINT("Keyword: /memreserve/\n");
BEGIN_DEFAULT();
@@ -101,7 +102,7 @@ static int dts_version; /* = 0 */
}
<*>{LABEL}: {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
DPRINT("Label: %s\n", yytext);
yylval.labelref = strdup(yytext);
@@ -110,7 +111,7 @@ static int dts_version; /* = 0 */
}
<INITIAL>[bodh]# {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
if (*yytext == 'b')
yylval.cbase = 2;
@@ -125,7 +126,7 @@ static int dts_version; /* = 0 */
}
<INITIAL>[0-9a-fA-F]+ {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
yylval.literal = strdup(yytext);
DPRINT("Literal: '%s'\n", yylval.literal);
@@ -133,7 +134,7 @@ static int dts_version; /* = 0 */
}
<V1>[0-9]+|0[xX][0-9a-fA-F]+ {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
yylval.literal = strdup(yytext);
DPRINT("Literal: '%s'\n", yylval.literal);
@@ -141,7 +142,7 @@ static int dts_version; /* = 0 */
}
\&{LABEL} { /* label reference */
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
DPRINT("Ref: %s\n", yytext+1);
yylval.labelref = strdup(yytext+1);
@@ -149,7 +150,7 @@ static int dts_version; /* = 0 */
}
"&{/"{PATHCHAR}+\} { /* new-style path reference */
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
yytext[yyleng-1] = '\0';
DPRINT("Ref: %s\n", yytext+2);
@@ -158,7 +159,7 @@ static int dts_version; /* = 0 */
}
<INITIAL>"&/"{PATHCHAR}+ { /* old-style path reference */
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
DPRINT("Ref: %s\n", yytext+1);
yylval.labelref = strdup(yytext+1);
@@ -166,7 +167,7 @@ static int dts_version; /* = 0 */
}
<BYTESTRING>[0-9a-fA-F]{2} {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
yylval.byte = strtol(yytext, NULL, 16);
DPRINT("Byte: %02x\n", (int)yylval.byte);
@@ -174,7 +175,7 @@ static int dts_version; /* = 0 */
}
<BYTESTRING>"]" {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
DPRINT("/BYTESTRING\n");
BEGIN_DEFAULT();
@@ -182,7 +183,7 @@ static int dts_version; /* = 0 */
}
<PROPNODENAME>{PROPNODECHAR}+ {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
DPRINT("PropNodeName: %s\n", yytext);
yylval.propnodename = strdup(yytext);
@@ -190,20 +191,19 @@ static int dts_version; /* = 0 */
return DT_PROPNODENAME;
}
-
-<*>[[:space:]]+ /* eat whitespace */
-
-<*>"/*"([^*]|\*+[^*/])*\*+"/" {
- yylloc.filenum = srcpos_filenum;
+"/incbin/" {
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
- DPRINT("Comment: %s\n", yytext);
- /* eat comments */
+ DPRINT("Binary Include\n");
+ return DT_INCBIN;
}
-<*>"//".*\n /* eat line comments */
+<*>{WS}+ /* eat whitespace */
+<*>{COMMENT}+ /* eat C-style comments */
+<*>{LINECOMMENT}+ /* eat C++-style comments */
<*>. {
- yylloc.filenum = srcpos_filenum;
+ yylloc.file = srcpos_file;
yylloc.first_line = yylineno;
DPRINT("Char: %c (\\x%02x)\n", yytext[0],
(unsigned)yytext[0]);
@@ -227,14 +227,13 @@ static int dts_version; /* = 0 */
*/
struct incl_file {
- int filenum;
- FILE *file;
+ struct dtc_file *file;
YY_BUFFER_STATE yy_prev_buf;
int yy_prev_lineno;
struct incl_file *prev;
};
-struct incl_file *incl_file_stack;
+static struct incl_file *incl_file_stack;
/*
@@ -245,36 +244,34 @@ struct incl_file *incl_file_stack;
static int incl_depth = 0;
-int push_input_file(const char *filename)
+static void push_input_file(const char *filename)
{
- FILE *f;
struct incl_file *incl_file;
+ struct dtc_file *newfile;
+ struct search_path search, *searchptr = NULL;
- if (!filename) {
- yyerror("No include file name given.");
- return 0;
- }
+ assert(filename);
- if (incl_depth++ >= MAX_INCLUDE_DEPTH) {
- yyerror("Includes nested too deeply");
- return 0;
+ if (incl_depth++ >= MAX_INCLUDE_DEPTH)
+ die("Includes nested too deeply");
+
+ if (srcpos_file) {
+ search.dir = srcpos_file->dir;
+ search.next = NULL;
+ search.prev = NULL;
+ searchptr = &search;
}
- f = dtc_open_file(filename);
+ newfile = dtc_open_file(filename, searchptr);
- incl_file = malloc(sizeof(struct incl_file));
- if (!incl_file) {
- yyerror("Can not allocate include file space.");
- return 0;
- }
+ incl_file = xmalloc(sizeof(struct incl_file));
/*
* 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->file = srcpos_file;
incl_file->prev = incl_file_stack;
incl_file_stack = incl_file;
@@ -282,23 +279,21 @@ int push_input_file(const char *filename)
/*
* Establish new context.
*/
- srcpos_filenum = lookup_file_name(filename, 0);
+ srcpos_file = newfile;
yylineno = 1;
- yyin = f;
+ yyin = newfile->file;
yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
-
- return 1;
}
-int pop_input_file(void)
+static int pop_input_file(void)
{
struct incl_file *incl_file;
if (incl_file_stack == 0)
return 0;
- fclose(yyin);
+ dtc_close_file(srcpos_file);
/*
* Pop.
@@ -313,16 +308,13 @@ int pop_input_file(void)
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;
+ srcpos_file = incl_file->file;
+ yyin = incl_file->file ? incl_file->file->file : NULL;
/*
* Free old state.
*/
free(incl_file);
- if (YY_CURRENT_BUFFER == 0)
- return 0;
-
return 1;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 16:41:00 +0000