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89d123106a
This adds the following commits from upstream: 756ffc4f52f6 Build pylibfdt as part of the normal build process 8cb3896358e9 Adjust libfdt.h to work with swig b40aa8359aff Mention pylibfdt in the documentation 12cfb740cc76 Add tests for pylibfdt 50f250701631 Add an initial Python library for libfdt cdbb2b6c7a3a checks: Warn on node name unit-addresses with '0x' or leading 0s 4c15d5da17cc checks: Add bus checks for simple-bus buses 33c3985226d3 checks: Add bus checks for PCI buses 558cd81bdd43 dtc: Bump version to v1.4.4 c17a811c62eb fdtput: Remove star from value_len documentation 194d5caaefcb fdtget: Use @return to document the return value d922ecdd017b tests: Make realloc_fdt() really allocate *fdt 921cc17fec29 libfdt: overlay: Check the value of the right variable 9ffdf60bf463 dtc: Simplify asm_emit_string() implementation 881012e44386 libfdt: Change names of sparse helper macros bad5b28049e5 Fix assorted sparse warnings 672ac09ea04d Clean up gcc attributes 49300f2ade6a dtc: Don't abuse struct fdt_reserve_entry fa8bc7f928ac dtc: Bump version to v1.4.3 34a9886a177f Add printf format attributes f72508e2b6ca Correct some broken printf() like format mismatches 397d5ef0203c libfdt: Add fdt_setprop_empty() 69a1bd6ad3f9 libfdt: Remove undefined behaviour setting empty properties acd1b534a592 Print output filename as part of warning messages 120775eb1cf3 dtc: Use streq() in preference to strcmp() 852e9ecbe197 checks: Add Warning for stricter node name character checking ef0e8f061534 checks: Add Warning for stricter property name character checking 00d7bb1f4b0e dtc: pos parameter to srcpos_string() can't be NULL 95d57726bca4 livetree.c: Fix memory leak 3b9c97093d6e dtc: Fix NULL pointer use in dtlabel + dtref case 43eb551426ea manual: Fix typo it -> in 4baf15f7f13f Makefile: Add tags rule Signed-off-by: Rob Herring <robh@kernel.org>
307 lines
6.7 KiB
Plaintext
307 lines
6.7 KiB
Plaintext
/*
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* (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
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*
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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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%option noyywrap nounput noinput never-interactive
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%x BYTESTRING
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%x PROPNODENAME
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%s V1
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PROPNODECHAR [a-zA-Z0-9,._+*#?@-]
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PATHCHAR ({PROPNODECHAR}|[/])
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LABEL [a-zA-Z_][a-zA-Z0-9_]*
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STRING \"([^\\"]|\\.)*\"
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CHAR_LITERAL '([^']|\\')*'
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WS [[:space:]]
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COMMENT "/*"([^*]|\*+[^*/])*\*+"/"
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LINECOMMENT "//".*\n
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%{
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#include "dtc.h"
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#include "srcpos.h"
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#include "dtc-parser.tab.h"
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YYLTYPE yylloc;
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extern bool treesource_error;
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/* CAUTION: this will stop working if we ever use yyless() or yyunput() */
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#define YY_USER_ACTION \
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{ \
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srcpos_update(&yylloc, yytext, yyleng); \
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}
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/*#define LEXDEBUG 1*/
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#ifdef LEXDEBUG
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#define DPRINT(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
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#else
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#define DPRINT(fmt, ...) do { } while (0)
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#endif
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static int dts_version = 1;
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#define BEGIN_DEFAULT() DPRINT("<V1>\n"); \
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BEGIN(V1); \
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static void push_input_file(const char *filename);
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static bool pop_input_file(void);
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static void PRINTF(1, 2) lexical_error(const char *fmt, ...);
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%}
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%%
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<*>"/include/"{WS}*{STRING} {
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char *name = strchr(yytext, '\"') + 1;
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yytext[yyleng-1] = '\0';
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push_input_file(name);
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}
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<*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
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char *line, *fnstart, *fnend;
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struct data fn;
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/* skip text before line # */
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line = yytext;
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while (!isdigit((unsigned char)*line))
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line++;
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/* regexp ensures that first and list "
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* in the whole yytext are those at
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* beginning and end of the filename string */
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fnstart = memchr(yytext, '"', yyleng);
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for (fnend = yytext + yyleng - 1;
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*fnend != '"'; fnend--)
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;
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assert(fnstart && fnend && (fnend > fnstart));
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fn = data_copy_escape_string(fnstart + 1,
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fnend - fnstart - 1);
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/* Don't allow nuls in filenames */
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if (memchr(fn.val, '\0', fn.len - 1))
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lexical_error("nul in line number directive");
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/* -1 since #line is the number of the next line */
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srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
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data_free(fn);
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}
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<*><<EOF>> {
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if (!pop_input_file()) {
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yyterminate();
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}
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}
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<*>{STRING} {
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DPRINT("String: %s\n", yytext);
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yylval.data = data_copy_escape_string(yytext+1,
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yyleng-2);
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return DT_STRING;
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}
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<*>"/dts-v1/" {
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DPRINT("Keyword: /dts-v1/\n");
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dts_version = 1;
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BEGIN_DEFAULT();
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return DT_V1;
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}
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<*>"/plugin/" {
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DPRINT("Keyword: /plugin/\n");
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return DT_PLUGIN;
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}
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<*>"/memreserve/" {
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DPRINT("Keyword: /memreserve/\n");
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BEGIN_DEFAULT();
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return DT_MEMRESERVE;
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}
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<*>"/bits/" {
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DPRINT("Keyword: /bits/\n");
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BEGIN_DEFAULT();
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return DT_BITS;
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}
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<*>"/delete-property/" {
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DPRINT("Keyword: /delete-property/\n");
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DPRINT("<PROPNODENAME>\n");
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BEGIN(PROPNODENAME);
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return DT_DEL_PROP;
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}
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<*>"/delete-node/" {
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DPRINT("Keyword: /delete-node/\n");
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DPRINT("<PROPNODENAME>\n");
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BEGIN(PROPNODENAME);
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return DT_DEL_NODE;
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}
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<*>{LABEL}: {
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DPRINT("Label: %s\n", yytext);
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yylval.labelref = xstrdup(yytext);
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yylval.labelref[yyleng-1] = '\0';
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return DT_LABEL;
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}
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<V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? {
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char *e;
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DPRINT("Integer Literal: '%s'\n", yytext);
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errno = 0;
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yylval.integer = strtoull(yytext, &e, 0);
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if (*e && e[strspn(e, "UL")]) {
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lexical_error("Bad integer literal '%s'",
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yytext);
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}
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if (errno == ERANGE)
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lexical_error("Integer literal '%s' out of range",
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yytext);
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else
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/* ERANGE is the only strtoull error triggerable
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* by strings matching the pattern */
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assert(errno == 0);
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return DT_LITERAL;
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}
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<*>{CHAR_LITERAL} {
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struct data d;
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DPRINT("Character literal: %s\n", yytext);
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d = data_copy_escape_string(yytext+1, yyleng-2);
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if (d.len == 1) {
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lexical_error("Empty character literal");
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yylval.integer = 0;
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} else {
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yylval.integer = (unsigned char)d.val[0];
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if (d.len > 2)
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lexical_error("Character literal has %d"
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" characters instead of 1",
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d.len - 1);
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}
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data_free(d);
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return DT_CHAR_LITERAL;
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}
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<*>\&{LABEL} { /* label reference */
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DPRINT("Ref: %s\n", yytext+1);
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yylval.labelref = xstrdup(yytext+1);
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return DT_REF;
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}
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<*>"&{/"{PATHCHAR}*\} { /* new-style path reference */
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yytext[yyleng-1] = '\0';
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DPRINT("Ref: %s\n", yytext+2);
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yylval.labelref = xstrdup(yytext+2);
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return DT_REF;
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}
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<BYTESTRING>[0-9a-fA-F]{2} {
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yylval.byte = strtol(yytext, NULL, 16);
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DPRINT("Byte: %02x\n", (int)yylval.byte);
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return DT_BYTE;
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}
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<BYTESTRING>"]" {
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DPRINT("/BYTESTRING\n");
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BEGIN_DEFAULT();
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return ']';
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}
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<PROPNODENAME>\\?{PROPNODECHAR}+ {
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DPRINT("PropNodeName: %s\n", yytext);
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yylval.propnodename = xstrdup((yytext[0] == '\\') ?
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yytext + 1 : yytext);
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BEGIN_DEFAULT();
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return DT_PROPNODENAME;
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}
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"/incbin/" {
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DPRINT("Binary Include\n");
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return DT_INCBIN;
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}
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<*>{WS}+ /* eat whitespace */
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<*>{COMMENT}+ /* eat C-style comments */
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<*>{LINECOMMENT}+ /* eat C++-style comments */
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<*>"<<" { return DT_LSHIFT; };
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<*>">>" { return DT_RSHIFT; };
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<*>"<=" { return DT_LE; };
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<*>">=" { return DT_GE; };
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<*>"==" { return DT_EQ; };
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<*>"!=" { return DT_NE; };
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<*>"&&" { return DT_AND; };
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<*>"||" { return DT_OR; };
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<*>. {
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DPRINT("Char: %c (\\x%02x)\n", yytext[0],
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(unsigned)yytext[0]);
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if (yytext[0] == '[') {
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DPRINT("<BYTESTRING>\n");
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BEGIN(BYTESTRING);
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}
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if ((yytext[0] == '{')
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|| (yytext[0] == ';')) {
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DPRINT("<PROPNODENAME>\n");
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BEGIN(PROPNODENAME);
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}
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return yytext[0];
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}
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%%
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static void push_input_file(const char *filename)
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{
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assert(filename);
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srcfile_push(filename);
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yyin = current_srcfile->f;
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yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
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}
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static bool pop_input_file(void)
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{
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if (srcfile_pop() == 0)
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return false;
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yypop_buffer_state();
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yyin = current_srcfile->f;
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return true;
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}
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static void lexical_error(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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srcpos_verror(&yylloc, "Lexical error", fmt, ap);
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va_end(ap);
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treesource_error = true;
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}
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