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riscv-gcc-1
Commit 24c3c71a by Zack Weinberg Committed by Zack Weinberg
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tradcpp.c: New file. 

	* tradcpp.c: New file.
	* tradcif.y: New file.
	* tradcif.c: New generated file.

	* Makefile.in: Add rules to build tradcpp.o, tradcif.o,
	$(srcdir)/tradcif.c.  Add tradcpp to STAGESTUFF and
	dependencies of C.  Install tradcpp from install-common, in
	$(libsubdir).

From-SVN: r34893
parent 60893f43
Showing with 2154 additions and 2 deletions
gcc/ChangeLog
2000-07-06 Zack Weinberg <zack@wolery.cumb.org> 2000-07-06 Zack Weinberg <zack@wolery.cumb.org>
* tradcpp.c: New file.
* tradcif.y: New file.
* tradcif.c: New generated file.
* Makefile.in: Add rules to build tradcpp.o, tradcif.o,
$(srcdir)/tradcif.c. Add tradcpp to STAGESTUFF and
dependencies of C. Install tradcpp from install-common, in
$(libsubdir).
2000-07-06 Zack Weinberg <zack@wolery.cumb.org>
* cppinit.c: Include cppdefault.h. Refer to * cppinit.c: Include cppdefault.h. Refer to
cpp_GCC_INCLUDE_DIR and cpp_GCC_INCLUDE_DIR_len, not directly cpp_GCC_INCLUDE_DIR and cpp_GCC_INCLUDE_DIR_len, not directly
to GCC_INCLUDE_DIR and its length. to GCC_INCLUDE_DIR and its length.
......
gcc/Makefile.in
...@@ -716,7 +716,7 @@ STAGESTUFF = *$(objext) insn-flags.h insn-config.h insn-codes.h \ ...@@ -716,7 +716,7 @@ STAGESTUFF = *$(objext) insn-flags.h insn-config.h insn-codes.h \
xgcc$(exeext) xcpp$(exeext) cc1$(exeext) cpp$(exeext) $(EXTRA_PASSES) \ xgcc$(exeext) xcpp$(exeext) cc1$(exeext) cpp$(exeext) $(EXTRA_PASSES) \
$(EXTRA_PARTS) $(EXTRA_PROGRAMS) gcc-cross$(exeext) cc1obj$(exeext) \ $(EXTRA_PARTS) $(EXTRA_PROGRAMS) gcc-cross$(exeext) cc1obj$(exeext) \
enquire$(exeext) protoize$(exeext) unprotoize$(exeext) \ enquire$(exeext) protoize$(exeext) unprotoize$(exeext) \
specs collect2$(exeext) $(USE_COLLECT2) underscore.c \ specs collect2$(exeext) $(USE_COLLECT2) underscore.c tradcpp$(exeext) \
gcov$(exeext) *.[0-9][0-9].* *.[si] libcpp.a libgcc libgcc.mk \ gcov$(exeext) *.[0-9][0-9].* *.[si] libcpp.a libgcc libgcc.mk \
$(LANG_STAGESTUFF) $(LANG_STAGESTUFF)
...@@ -869,7 +869,7 @@ native: config.status auto-host.h cpp$(exeext) intl.all $(LANGUAGES) \ ...@@ -869,7 +869,7 @@ native: config.status auto-host.h cpp$(exeext) intl.all $(LANGUAGES) \
$(EXTRA_PASSES) $(EXTRA_PROGRAMS) $(USE_COLLECT2) $(EXTRA_PASSES) $(EXTRA_PROGRAMS) $(USE_COLLECT2)
# Define the names for selecting languages in LANGUAGES. # Define the names for selecting languages in LANGUAGES.
C c: cc1$(exeext) C c: cc1$(exeext) tradcpp$(exeext)
PROTO: proto PROTO: proto
# Tell GNU make these are phony targets. # Tell GNU make these are phony targets.
...@@ -1814,6 +1814,18 @@ cppdefault.o: cppdefault.c $(CONFIG_H) system.h cppdefault.h Makefile ...@@ -1814,6 +1814,18 @@ cppdefault.o: cppdefault.c $(CONFIG_H) system.h cppdefault.h Makefile
mkdeps.o: mkdeps.c $(CONFIG_H) system.h mkdeps.h mkdeps.o: mkdeps.c $(CONFIG_H) system.h mkdeps.h
# The traditional mode preprocessor, a separate program for ease of
# maintenance. Some code is shared with the ISO-C cpp.
tradcpp$(exeext): tradcpp.o tradcif.o cppdefault.o $(LIBDEPS)
$(CC) $(ALL_CFLAGS) $(LDFLAGS) -o tradcpp$(exeext) \
tradcpp.o tradcif.o cppdefault.o version.o intl.o $(LIBS)
tradcpp.o: tradcpp.c $(CONFIG_H) system.h version.h cppdefault.h
tradcif.o: tradcif.c $(CONFIG_H) system.h
$(srcdir)/tradcif.c: $(srcdir)/tradcif.y
cd $(srcdir); $(BISON) $(BISONFLAGS) -o tradcif.c tradcif.y
# Note for the stamp targets, we run the program `true' instead of # Note for the stamp targets, we run the program `true' instead of
# having an empty command (nothing following the semicolon). # having an empty command (nothing following the semicolon).
...@@ -2339,6 +2351,8 @@ install-common: native installdirs $(EXTRA_PARTS) lang.install-common ...@@ -2339,6 +2351,8 @@ install-common: native installdirs $(EXTRA_PARTS) lang.install-common
fi fi
-rm -f $(libsubdir)/cpp$(exeext) -rm -f $(libsubdir)/cpp$(exeext)
$(INSTALL_PROGRAM) cpp$(exeext) $(libsubdir)/cpp$(exeext) $(INSTALL_PROGRAM) cpp$(exeext) $(libsubdir)/cpp$(exeext)
-rm -f $(libsubdir)/tradcpp$(exeext)
$(INSTALL_PROGRAM) tradcpp$(exeext) $(libsubdir)/tradcpp$(exeext)
# Install gcov if it was compiled. # Install gcov if it was compiled.
-if [ -f gcov$(exeext) ]; \ -if [ -f gcov$(exeext) ]; \
then \ then \
......
gcc/tradcif.c 0 → 100644
/* A Bison parser, made from tradcif.y
by GNU Bison version 1.28 */
#define YYBISON 1 /* Identify Bison output. */
#define INT 257
#define CHAR 258
#define NAME 259
#define ERROR 260
#define OR 261
#define AND 262
#define EQUAL 263
#define NOTEQUAL 264
#define LEQ 265
#define GEQ 266
#define LSH 267
#define RSH 268
#define UNARY 269
#line 26 "tradcif.y"
#include "config.h"
#include "system.h"
#include <setjmp.h>
int yylex PARAMS ((void));
void yyerror PARAMS ((const char *msgid));
extern void error PARAMS ((const char *msgid, ...));
extern void warning PARAMS ((const char *msgid, ...));
extern struct hashnode *lookup PARAMS ((const unsigned char *, int, int));
int parse_number PARAMS ((int));
int parse_escape PARAMS ((char **));
int parse_c_expression PARAMS ((char *));
int expression_value;
static jmp_buf parse_return_error;
/* some external tables of character types */
extern unsigned char is_idstart[], is_idchar[];
#ifndef CHAR_TYPE_SIZE
#define CHAR_TYPE_SIZE BITS_PER_UNIT
#endif
#line 52 "tradcif.y"
typedef union {
struct constant {long value; int unsignedp;} integer;
int voidval;
char *sval;
} YYSTYPE;
#include <stdio.h>
#ifndef __cplusplus
#ifndef __STDC__
#define const
#endif
#endif
#define YYFINAL 61
#define YYFLAG -32768
#define YYNTBASE 33
#define YYTRANSLATE(x) ((unsigned)(x) <= 269 ? yytranslate[x] : 36)
static const char yytranslate[] = { 0,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 29, 2, 2, 2, 27, 14, 2, 31,
32, 25, 23, 9, 24, 2, 26, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 8, 2, 17,
2, 18, 7, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 13, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 12, 2, 30, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 1, 3, 4, 5, 6,
10, 11, 15, 16, 19, 20, 21, 22, 28
};
#if YYDEBUG != 0
static const short yyprhs[] = { 0,
0, 2, 4, 8, 11, 14, 17, 20, 24, 28,
32, 36, 40, 44, 48, 52, 56, 60, 64, 68,
72, 76, 80, 84, 88, 92, 96, 102, 104, 106
};
static const short yyrhs[] = { 34,
0, 35, 0, 34, 9, 35, 0, 24, 35, 0,
29, 35, 0, 23, 35, 0, 30, 35, 0, 31,
34, 32, 0, 35, 25, 35, 0, 35, 26, 35,
0, 35, 27, 35, 0, 35, 23, 35, 0, 35,
24, 35, 0, 35, 21, 35, 0, 35, 22, 35,
0, 35, 15, 35, 0, 35, 16, 35, 0, 35,
19, 35, 0, 35, 20, 35, 0, 35, 17, 35,
0, 35, 18, 35, 0, 35, 14, 35, 0, 35,
13, 35, 0, 35, 12, 35, 0, 35, 11, 35,
0, 35, 10, 35, 0, 35, 7, 35, 8, 35,
0, 3, 0, 4, 0, 5, 0
};
#endif
#if YYDEBUG != 0
static const short yyrline[] = { 0,
81, 86, 87, 92, 95, 98, 100, 103, 108, 114,
125, 136, 139, 142, 148, 154, 157, 160, 167, 174,
181, 188, 191, 194, 197, 200, 203, 206, 208, 210
};
#endif
#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)
static const char * const yytname[] = { "$","error","$undefined.","INT","CHAR",
"NAME","ERROR","'?'","':'","','","OR","AND","'|'","'^'","'&'","EQUAL","NOTEQUAL",
"'<'","'>'","LEQ","GEQ","LSH","RSH","'+'","'-'","'*'","'/'","'%'","UNARY","'!'",
"'~'","'('","')'","start","exp1","exp", NULL
};
#endif
static const short yyr1[] = { 0,
33, 34, 34, 35, 35, 35, 35, 35, 35, 35,
35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
35, 35, 35, 35, 35, 35, 35, 35, 35, 35
};
static const short yyr2[] = { 0,
1, 1, 3, 2, 2, 2, 2, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 5, 1, 1, 1
};
static const short yydefact[] = { 0,
28, 29, 30, 0, 0, 0, 0, 0, 1, 2,
6, 4, 5, 7, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 8, 3, 0, 26, 25,
24, 23, 22, 16, 17, 20, 21, 18, 19, 14,
15, 12, 13, 9, 10, 11, 0, 27, 0, 0,
0
};
static const short yydefgoto[] = { 59,
9, 10
};
static const short yypact[] = { 31,
-32768,-32768,-32768, 31, 31, 31, 31, 31, 1, 77,
-32768,-32768,-32768,-32768, 0, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
31, 31, 31, 31, 31,-32768, 77, 56, 94, 25,
109, 123, 136, 147, 147, 154, 154, 154, 154, -19,
-19, 32, 32,-32768,-32768,-32768, 31, 77, 11, 33,
-32768
};
static const short yypgoto[] = {-32768,
48, -4
};
#define YYLAST 181
static const short yytable[] = { 11,
12, 13, 14, 31, 32, 33, 34, 35, 16, 16,
60, 37, 38, 39, 40, 41, 42, 43, 44, 45,
46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
56, 36, 61, 1, 2, 3, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
34, 35, 58, 4, 5, 15, 33, 34, 35, 6,
7, 8, 17, 57, 0, 18, 19, 20, 21, 22,
23, 24, 25, 26, 27, 28, 29, 30, 31, 32,
33, 34, 35, 17, 0, 0, 18, 19, 20, 21,
22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
35, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 22, 23, 24, 25,
26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
23, 24, 25, 26, 27, 28, 29, 30, 31, 32,
33, 34, 35, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 29, 30, 31, 32, 33, 34,
35
};
static const short yycheck[] = { 4,
5, 6, 7, 23, 24, 25, 26, 27, 9, 9,
0, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
35, 32, 0, 3, 4, 5, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
26, 27, 57, 23, 24, 8, 25, 26, 27, 29,
30, 31, 7, 8, -1, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 7, -1, -1, 10, 11, 12, 13,
14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
27, 13, 14, 15, 16, 17, 18, 19, 20, 21,
22, 23, 24, 25, 26, 27, 14, 15, 16, 17,
18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 21, 22, 23, 24, 25, 26,
27
};
/* -*-C-*- Note some compilers choke on comments on `#line' lines. */
#line 3 "/usr/share/misc/bison.simple"
/* This file comes from bison-1.28. */
/* Skeleton output parser for bison,
Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
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, 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. */
/* As a special exception, when this file is copied by Bison into a
Bison output file, you may use that output file without restriction.
This special exception was added by the Free Software Foundation
in version 1.24 of Bison. */
/* This is the parser code that is written into each bison parser
when the %semantic_parser declaration is not specified in the grammar.
It was written by Richard Stallman by simplifying the hairy parser
used when %semantic_parser is specified. */
#ifndef YYSTACK_USE_ALLOCA
#ifdef alloca
#define YYSTACK_USE_ALLOCA
#else /* alloca not defined */
#ifdef __GNUC__
#define YYSTACK_USE_ALLOCA
#define alloca __builtin_alloca
#else /* not GNU C. */
#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386))
#define YYSTACK_USE_ALLOCA
#include <alloca.h>
#else /* not sparc */
/* We think this test detects Watcom and Microsoft C. */
/* This used to test MSDOS, but that is a bad idea
since that symbol is in the user namespace. */
#if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__)
#if 0 /* No need for malloc.h, which pollutes the namespace;
instead, just don't use alloca. */
#include <malloc.h>
#endif
#else /* not MSDOS, or __TURBOC__ */
#if defined(_AIX)
/* I don't know what this was needed for, but it pollutes the namespace.
So I turned it off. rms, 2 May 1997. */
/* #include <malloc.h> */
#pragma alloca
#define YYSTACK_USE_ALLOCA
#else /* not MSDOS, or __TURBOC__, or _AIX */
#if 0
#ifdef __hpux /* haible@ilog.fr says this works for HPUX 9.05 and up,
and on HPUX 10. Eventually we can turn this on. */
#define YYSTACK_USE_ALLOCA
#define alloca __builtin_alloca
#endif /* __hpux */
#endif
#endif /* not _AIX */
#endif /* not MSDOS, or __TURBOC__ */
#endif /* not sparc */
#endif /* not GNU C */
#endif /* alloca not defined */
#endif /* YYSTACK_USE_ALLOCA not defined */
#ifdef YYSTACK_USE_ALLOCA
#define YYSTACK_ALLOC alloca
#else
#define YYSTACK_ALLOC malloc
#endif
/* Note: there must be only one dollar sign in this file.
It is replaced by the list of actions, each action
as one case of the switch. */
#define yyerrok (yyerrstatus = 0)
#define yyclearin (yychar = YYEMPTY)
#define YYEMPTY -2
#define YYEOF 0
#define YYACCEPT goto yyacceptlab
#define YYABORT goto yyabortlab
#define YYERROR goto yyerrlab1
/* Like YYERROR except do call yyerror.
This remains here temporarily to ease the
transition to the new meaning of YYERROR, for GCC.
Once GCC version 2 has supplanted version 1, this can go. */
#define YYFAIL goto yyerrlab
#define YYRECOVERING() (!!yyerrstatus)
#define YYBACKUP(token, value) \
do \
if (yychar == YYEMPTY && yylen == 1) \
{ yychar = (token), yylval = (value); \
yychar1 = YYTRANSLATE (yychar); \
YYPOPSTACK; \
goto yybackup; \
} \
else \
{ yyerror ("syntax error: cannot back up"); YYERROR; } \
while (0)
#define YYTERROR 1
#define YYERRCODE 256
#ifndef YYPURE
#define YYLEX yylex()
#endif
#ifdef YYPURE
#ifdef YYLSP_NEEDED
#ifdef YYLEX_PARAM
#define YYLEX yylex(&yylval, &yylloc, YYLEX_PARAM)
#else
#define YYLEX yylex(&yylval, &yylloc)
#endif
#else /* not YYLSP_NEEDED */
#ifdef YYLEX_PARAM
#define YYLEX yylex(&yylval, YYLEX_PARAM)
#else
#define YYLEX yylex(&yylval)
#endif
#endif /* not YYLSP_NEEDED */
#endif
/* If nonreentrant, generate the variables here */
#ifndef YYPURE
int yychar; /* the lookahead symbol */
YYSTYPE yylval; /* the semantic value of the */
/* lookahead symbol */
#ifdef YYLSP_NEEDED
YYLTYPE yylloc; /* location data for the lookahead */
/* symbol */
#endif
int yynerrs; /* number of parse errors so far */
#endif /* not YYPURE */
#if YYDEBUG != 0
int yydebug; /* nonzero means print parse trace */
/* Since this is uninitialized, it does not stop multiple parsers
from coexisting. */
#endif
/* YYINITDEPTH indicates the initial size of the parser's stacks */
#ifndef YYINITDEPTH
#define YYINITDEPTH 200
#endif
/* YYMAXDEPTH is the maximum size the stacks can grow to
(effective only if the built-in stack extension method is used). */
#if YYMAXDEPTH == 0
#undef YYMAXDEPTH
#endif
#ifndef YYMAXDEPTH
#define YYMAXDEPTH 10000
#endif
/* Define __yy_memcpy. Note that the size argument
should be passed with type unsigned int, because that is what the non-GCC
definitions require. With GCC, __builtin_memcpy takes an arg
of type size_t, but it can handle unsigned int. */
#if __GNUC__ > 1 /* GNU C and GNU C++ define this. */
#define __yy_memcpy(TO,FROM,COUNT) __builtin_memcpy(TO,FROM,COUNT)
#else /* not GNU C or C++ */
#ifndef __cplusplus
/* This is the most reliable way to avoid incompatibilities
in available built-in functions on various systems. */
static void
__yy_memcpy (to, from, count)
char *to;
char *from;
unsigned int count;
{
register char *f = from;
register char *t = to;
register int i = count;
while (i-- > 0)
*t++ = *f++;
}
#else /* __cplusplus */
/* This is the most reliable way to avoid incompatibilities
in available built-in functions on various systems. */
static void
__yy_memcpy (char *to, char *from, unsigned int count)
{
register char *t = to;
register char *f = from;
register int i = count;
while (i-- > 0)
*t++ = *f++;
}
#endif
#endif
#line 217 "/usr/share/misc/bison.simple"
/* The user can define YYPARSE_PARAM as the name of an argument to be passed
into yyparse. The argument should have type void *.
It should actually point to an object.
Grammar actions can access the variable by casting it
to the proper pointer type. */
#ifdef YYPARSE_PARAM
#ifdef __cplusplus
#define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
#define YYPARSE_PARAM_DECL
#else /* not __cplusplus */
#define YYPARSE_PARAM_ARG YYPARSE_PARAM
#define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
#endif /* not __cplusplus */
#else /* not YYPARSE_PARAM */
#define YYPARSE_PARAM_ARG
#define YYPARSE_PARAM_DECL
#endif /* not YYPARSE_PARAM */
/* Prevent warning if -Wstrict-prototypes. */
#ifdef __GNUC__
#ifdef YYPARSE_PARAM
int yyparse (void *);
#else
int yyparse (void);
#endif
#endif
int
yyparse(YYPARSE_PARAM_ARG)
YYPARSE_PARAM_DECL
{
register int yystate;
register int yyn;
register short *yyssp;
register YYSTYPE *yyvsp;
int yyerrstatus; /* number of tokens to shift before error messages enabled */
int yychar1 = 0; /* lookahead token as an internal (translated) token number */
short yyssa[YYINITDEPTH]; /* the state stack */
YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */
short *yyss = yyssa; /* refer to the stacks thru separate pointers */
YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
#ifdef YYLSP_NEEDED
YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */
YYLTYPE *yyls = yylsa;
YYLTYPE *yylsp;
#define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
#else
#define YYPOPSTACK (yyvsp--, yyssp--)
#endif
int yystacksize = YYINITDEPTH;
int yyfree_stacks = 0;
#ifdef YYPURE
int yychar;
YYSTYPE yylval;
int yynerrs;
#ifdef YYLSP_NEEDED
YYLTYPE yylloc;
#endif
#endif
YYSTYPE yyval; /* the variable used to return */
/* semantic values from the action */
/* routines */
int yylen;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Starting parse\n");
#endif
yystate = 0;
yyerrstatus = 0;
yynerrs = 0;
yychar = YYEMPTY; /* Cause a token to be read. */
/* Initialize stack pointers.
Waste one element of value and location stack
so that they stay on the same level as the state stack.
The wasted elements are never initialized. */
yyssp = yyss - 1;
yyvsp = yyvs;
#ifdef YYLSP_NEEDED
yylsp = yyls;
#endif
/* Push a new state, which is found in yystate . */
/* In all cases, when you get here, the value and location stacks
have just been pushed. so pushing a state here evens the stacks. */
yynewstate:
*++yyssp = yystate;
if (yyssp >= yyss + yystacksize - 1)
{
/* Give user a chance to reallocate the stack */
/* Use copies of these so that the &'s don't force the real ones into memory. */
YYSTYPE *yyvs1 = yyvs;
short *yyss1 = yyss;
#ifdef YYLSP_NEEDED
YYLTYPE *yyls1 = yyls;
#endif
/* Get the current used size of the three stacks, in elements. */
int size = yyssp - yyss + 1;
#ifdef yyoverflow
/* Each stack pointer address is followed by the size of
the data in use in that stack, in bytes. */
#ifdef YYLSP_NEEDED
/* This used to be a conditional around just the two extra args,
but that might be undefined if yyoverflow is a macro. */
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yyls1, size * sizeof (*yylsp),
&yystacksize);
#else
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yystacksize);
#endif
yyss = yyss1; yyvs = yyvs1;
#ifdef YYLSP_NEEDED
yyls = yyls1;
#endif
#else /* no yyoverflow */
/* Extend the stack our own way. */
if (yystacksize >= YYMAXDEPTH)
{
yyerror("parser stack overflow");
if (yyfree_stacks)
{
free (yyss);
free (yyvs);
#ifdef YYLSP_NEEDED
free (yyls);
#endif
}
return 2;
}
yystacksize *= 2;
if (yystacksize > YYMAXDEPTH)
yystacksize = YYMAXDEPTH;
#ifndef YYSTACK_USE_ALLOCA
yyfree_stacks = 1;
#endif
yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
__yy_memcpy ((char *)yyss, (char *)yyss1,
size * (unsigned int) sizeof (*yyssp));
yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
__yy_memcpy ((char *)yyvs, (char *)yyvs1,
size * (unsigned int) sizeof (*yyvsp));
#ifdef YYLSP_NEEDED
yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
__yy_memcpy ((char *)yyls, (char *)yyls1,
size * (unsigned int) sizeof (*yylsp));
#endif
#endif /* no yyoverflow */
yyssp = yyss + size - 1;
yyvsp = yyvs + size - 1;
#ifdef YYLSP_NEEDED
yylsp = yyls + size - 1;
#endif
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Stack size increased to %d\n", yystacksize);
#endif
if (yyssp >= yyss + yystacksize - 1)
YYABORT;
}
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Entering state %d\n", yystate);
#endif
goto yybackup;
yybackup:
/* Do appropriate processing given the current state. */
/* Read a lookahead token if we need one and don't already have one. */
/* yyresume: */
/* First try to decide what to do without reference to lookahead token. */
yyn = yypact[yystate];
if (yyn == YYFLAG)
goto yydefault;
/* Not known => get a lookahead token if don't already have one. */
/* yychar is either YYEMPTY or YYEOF
or a valid token in external form. */
if (yychar == YYEMPTY)
{
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Reading a token: ");
#endif
yychar = YYLEX;
}
/* Convert token to internal form (in yychar1) for indexing tables with */
if (yychar <= 0) /* This means end of input. */
{
yychar1 = 0;
yychar = YYEOF; /* Don't call YYLEX any more */
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Now at end of input.\n");
#endif
}
else
{
yychar1 = YYTRANSLATE(yychar);
#if YYDEBUG != 0
if (yydebug)
{
fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
/* Give the individual parser a way to print the precise meaning
of a token, for further debugging info. */
#ifdef YYPRINT
YYPRINT (stderr, yychar, yylval);
#endif
fprintf (stderr, ")\n");
}
#endif
}
yyn += yychar1;
if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
goto yydefault;
yyn = yytable[yyn];
/* yyn is what to do for this token type in this state.
Negative => reduce, -yyn is rule number.
Positive => shift, yyn is new state.
New state is final state => don't bother to shift,
just return success.
0, or most negative number => error. */
if (yyn < 0)
{
if (yyn == YYFLAG)
goto yyerrlab;
yyn = -yyn;
goto yyreduce;
}
else if (yyn == 0)
goto yyerrlab;
if (yyn == YYFINAL)
YYACCEPT;
/* Shift the lookahead token. */
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
#endif
/* Discard the token being shifted unless it is eof. */
if (yychar != YYEOF)
yychar = YYEMPTY;
*++yyvsp = yylval;
#ifdef YYLSP_NEEDED
*++yylsp = yylloc;
#endif
/* count tokens shifted since error; after three, turn off error status. */
if (yyerrstatus) yyerrstatus--;
yystate = yyn;
goto yynewstate;
/* Do the default action for the current state. */
yydefault:
yyn = yydefact[yystate];
if (yyn == 0)
goto yyerrlab;
/* Do a reduction. yyn is the number of a rule to reduce with. */
yyreduce:
yylen = yyr2[yyn];
if (yylen > 0)
yyval = yyvsp[1-yylen]; /* implement default value of the action */
#if YYDEBUG != 0
if (yydebug)
{
int i;
fprintf (stderr, "Reducing via rule %d (line %d), ",
yyn, yyrline[yyn]);
/* Print the symbols being reduced, and their result. */
for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
fprintf (stderr, "%s ", yytname[yyrhs[i]]);
fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
}
#endif
switch (yyn) {
case 1:
#line 82 "tradcif.y"
{ expression_value = yyvsp[0].integer.value; ;
break;}
case 3:
#line 88 "tradcif.y"
{ yyval.integer = yyvsp[0].integer; ;
break;}
case 4:
#line 93 "tradcif.y"
{ yyval.integer.value = - yyvsp[0].integer.value;
yyval.integer.unsignedp = yyvsp[0].integer.unsignedp; ;
break;}
case 5:
#line 96 "tradcif.y"
{ yyval.integer.value = ! yyvsp[0].integer.value;
yyval.integer.unsignedp = 0; ;
break;}
case 6:
#line 99 "tradcif.y"
{ yyval.integer = yyvsp[0].integer; ;
break;}
case 7:
#line 101 "tradcif.y"
{ yyval.integer.value = ~ yyvsp[0].integer.value;
yyval.integer.unsignedp = yyvsp[0].integer.unsignedp; ;
break;}
case 8:
#line 104 "tradcif.y"
{ yyval.integer = yyvsp[-1].integer; ;
break;}
case 9:
#line 109 "tradcif.y"
{ yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp;
if (yyval.integer.unsignedp)
yyval.integer.value = (unsigned) yyvsp[-2].integer.value * yyvsp[0].integer.value;
else
yyval.integer.value = yyvsp[-2].integer.value * yyvsp[0].integer.value; ;
break;}
case 10:
#line 115 "tradcif.y"
{ if (yyvsp[0].integer.value == 0)
{
error ("division by zero in #if");
yyvsp[0].integer.value = 1;
}
yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp;
if (yyval.integer.unsignedp)
yyval.integer.value = (unsigned) yyvsp[-2].integer.value / yyvsp[0].integer.value;
else
yyval.integer.value = yyvsp[-2].integer.value / yyvsp[0].integer.value; ;
break;}
case 11:
#line 126 "tradcif.y"
{ if (yyvsp[0].integer.value == 0)
{
error ("division by zero in #if");
yyvsp[0].integer.value = 1;
}
yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp;
if (yyval.integer.unsignedp)
yyval.integer.value = (unsigned) yyvsp[-2].integer.value % yyvsp[0].integer.value;
else
yyval.integer.value = yyvsp[-2].integer.value % yyvsp[0].integer.value; ;
break;}
case 12:
#line 137 "tradcif.y"
{ yyval.integer.value = yyvsp[-2].integer.value + yyvsp[0].integer.value;
yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp; ;
break;}
case 13:
#line 140 "tradcif.y"
{ yyval.integer.value = yyvsp[-2].integer.value - yyvsp[0].integer.value;
yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp; ;
break;}
case 14:
#line 143 "tradcif.y"
{ yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp;
if (yyval.integer.unsignedp)
yyval.integer.value = (unsigned) yyvsp[-2].integer.value << yyvsp[0].integer.value;
else
yyval.integer.value = yyvsp[-2].integer.value << yyvsp[0].integer.value; ;
break;}
case 15:
#line 149 "tradcif.y"
{ yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp;
if (yyval.integer.unsignedp)
yyval.integer.value = (unsigned) yyvsp[-2].integer.value >> yyvsp[0].integer.value;
else
yyval.integer.value = yyvsp[-2].integer.value >> yyvsp[0].integer.value; ;
break;}
case 16:
#line 155 "tradcif.y"
{ yyval.integer.value = (yyvsp[-2].integer.value == yyvsp[0].integer.value);
yyval.integer.unsignedp = 0; ;
break;}
case 17:
#line 158 "tradcif.y"
{ yyval.integer.value = (yyvsp[-2].integer.value != yyvsp[0].integer.value);
yyval.integer.unsignedp = 0; ;
break;}
case 18:
#line 161 "tradcif.y"
{ yyval.integer.unsignedp = 0;
if (yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp)
yyval.integer.value =
(unsigned) yyvsp[-2].integer.value <= (unsigned) yyvsp[0].integer.value;
else
yyval.integer.value = yyvsp[-2].integer.value <= yyvsp[0].integer.value; ;
break;}
case 19:
#line 168 "tradcif.y"
{ yyval.integer.unsignedp = 0;
if (yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp)
yyval.integer.value =
(unsigned) yyvsp[-2].integer.value >= (unsigned) yyvsp[0].integer.value;
else
yyval.integer.value = yyvsp[-2].integer.value >= yyvsp[0].integer.value; ;
break;}
case 20:
#line 175 "tradcif.y"
{ yyval.integer.unsignedp = 0;
if (yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp)
yyval.integer.value =
(unsigned) yyvsp[-2].integer.value < (unsigned) yyvsp[0].integer.value;
else
yyval.integer.value = yyvsp[-2].integer.value < yyvsp[0].integer.value; ;
break;}
case 21:
#line 182 "tradcif.y"
{ yyval.integer.unsignedp = 0;
if (yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp)
yyval.integer.value =
(unsigned) yyvsp[-2].integer.value > (unsigned) yyvsp[0].integer.value;
else
yyval.integer.value = yyvsp[-2].integer.value > yyvsp[0].integer.value; ;
break;}
case 22:
#line 189 "tradcif.y"
{ yyval.integer.value = yyvsp[-2].integer.value & yyvsp[0].integer.value;
yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp; ;
break;}
case 23:
#line 192 "tradcif.y"
{ yyval.integer.value = yyvsp[-2].integer.value ^ yyvsp[0].integer.value;
yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp; ;
break;}
case 24:
#line 195 "tradcif.y"
{ yyval.integer.value = yyvsp[-2].integer.value | yyvsp[0].integer.value;
yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp; ;
break;}
case 25:
#line 198 "tradcif.y"
{ yyval.integer.value = (yyvsp[-2].integer.value && yyvsp[0].integer.value);
yyval.integer.unsignedp = 0; ;
break;}
case 26:
#line 201 "tradcif.y"
{ yyval.integer.value = (yyvsp[-2].integer.value || yyvsp[0].integer.value);
yyval.integer.unsignedp = 0; ;
break;}
case 27:
#line 204 "tradcif.y"
{ yyval.integer.value = yyvsp[-4].integer.value ? yyvsp[-2].integer.value : yyvsp[0].integer.value;
yyval.integer.unsignedp = yyvsp[-2].integer.unsignedp || yyvsp[0].integer.unsignedp; ;
break;}
case 28:
#line 207 "tradcif.y"
{ yyval.integer = yylval.integer; ;
break;}
case 29:
#line 209 "tradcif.y"
{ yyval.integer = yylval.integer; ;
break;}
case 30:
#line 211 "tradcif.y"
{ yyval.integer.value = 0;
yyval.integer.unsignedp = 0; ;
break;}
}
/* the action file gets copied in in place of this dollarsign */
#line 543 "/usr/share/misc/bison.simple"
yyvsp -= yylen;
yyssp -= yylen;
#ifdef YYLSP_NEEDED
yylsp -= yylen;
#endif
#if YYDEBUG != 0
if (yydebug)
{
short *ssp1 = yyss - 1;
fprintf (stderr, "state stack now");
while (ssp1 != yyssp)
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
#endif
*++yyvsp = yyval;
#ifdef YYLSP_NEEDED
yylsp++;
if (yylen == 0)
{
yylsp->first_line = yylloc.first_line;
yylsp->first_column = yylloc.first_column;
yylsp->last_line = (yylsp-1)->last_line;
yylsp->last_column = (yylsp-1)->last_column;
yylsp->text = 0;
}
else
{
yylsp->last_line = (yylsp+yylen-1)->last_line;
yylsp->last_column = (yylsp+yylen-1)->last_column;
}
#endif
/* Now "shift" the result of the reduction.
Determine what state that goes to,
based on the state we popped back to
and the rule number reduced by. */
yyn = yyr1[yyn];
yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
yystate = yytable[yystate];
else
yystate = yydefgoto[yyn - YYNTBASE];
goto yynewstate;
yyerrlab: /* here on detecting error */
if (! yyerrstatus)
/* If not already recovering from an error, report this error. */
{
++yynerrs;
#ifdef YYERROR_VERBOSE
yyn = yypact[yystate];
if (yyn > YYFLAG && yyn < YYLAST)
{
int size = 0;
char *msg;
int x, count;
count = 0;
/* Start X at -yyn if nec to avoid negative indexes in yycheck. */
for (x = (yyn < 0 ? -yyn : 0);
x < (sizeof(yytname) / sizeof(char *)); x++)
if (yycheck[x + yyn] == x)
size += strlen(yytname[x]) + 15, count++;
msg = (char *) malloc(size + 15);
if (msg != 0)
{
strcpy(msg, "parse error");
if (count < 5)
{
count = 0;
for (x = (yyn < 0 ? -yyn : 0);
x < (sizeof(yytname) / sizeof(char *)); x++)
if (yycheck[x + yyn] == x)
{
strcat(msg, count == 0 ? ", expecting `" : " or `");
strcat(msg, yytname[x]);
strcat(msg, "'");
count++;
}
}
yyerror(msg);
free(msg);
}
else
yyerror ("parse error; also virtual memory exceeded");
}
else
#endif /* YYERROR_VERBOSE */
yyerror("parse error");
}
goto yyerrlab1;
yyerrlab1: /* here on error raised explicitly by an action */
if (yyerrstatus == 3)
{
/* if just tried and failed to reuse lookahead token after an error, discard it. */
/* return failure if at end of input */
if (yychar == YYEOF)
YYABORT;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
#endif
yychar = YYEMPTY;
}
/* Else will try to reuse lookahead token
after shifting the error token. */
yyerrstatus = 3; /* Each real token shifted decrements this */
goto yyerrhandle;
yyerrdefault: /* current state does not do anything special for the error token. */
#if 0
/* This is wrong; only states that explicitly want error tokens
should shift them. */
yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/
if (yyn) goto yydefault;
#endif
yyerrpop: /* pop the current state because it cannot handle the error token */
if (yyssp == yyss) YYABORT;
yyvsp--;
yystate = *--yyssp;
#ifdef YYLSP_NEEDED
yylsp--;
#endif
#if YYDEBUG != 0
if (yydebug)
{
short *ssp1 = yyss - 1;
fprintf (stderr, "Error: state stack now");
while (ssp1 != yyssp)
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
#endif
yyerrhandle:
yyn = yypact[yystate];
if (yyn == YYFLAG)
goto yyerrdefault;
yyn += YYTERROR;
if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
goto yyerrdefault;
yyn = yytable[yyn];
if (yyn < 0)
{
if (yyn == YYFLAG)
goto yyerrpop;
yyn = -yyn;
goto yyreduce;
}
else if (yyn == 0)
goto yyerrpop;
if (yyn == YYFINAL)
YYACCEPT;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Shifting error token, ");
#endif
*++yyvsp = yylval;
#ifdef YYLSP_NEEDED
*++yylsp = yylloc;
#endif
yystate = yyn;
goto yynewstate;
yyacceptlab:
/* YYACCEPT comes here. */
if (yyfree_stacks)
{
free (yyss);
free (yyvs);
#ifdef YYLSP_NEEDED
free (yyls);
#endif
}
return 0;
yyabortlab:
/* YYABORT comes here. */
if (yyfree_stacks)
{
free (yyss);
free (yyvs);
#ifdef YYLSP_NEEDED
free (yyls);
#endif
}
return 1;
}
#line 214 "tradcif.y"
/* During parsing of a C expression, the pointer to the next character
is in this variable. */
static char *lexptr;
/* Take care of parsing a number (anything that starts with a digit).
Set yylval and return the token type; update lexptr.
LEN is the number of characters in it. */
/* maybe needs to actually deal with floating point numbers */
int
parse_number (olen)
int olen;
{
register char *p = lexptr;
register long n = 0;
register int c;
register int base = 10;
register int len = olen;
for (c = 0; c < len; c++)
if (p[c] == '.') {
/* It's a float since it contains a point. */
yyerror ("floating point numbers not allowed in #if expressions");
return ERROR;
}
yylval.integer.unsignedp = 0;
if (len >= 3 && (!strncmp (p, "0x", 2) || !strncmp (p, "0X", 2))) {
p += 2;
base = 16;
len -= 2;
}
else if (*p == '0')
base = 8;
while (len > 0) {
c = *p++;
len--;
if (c >= 'A' && c <= 'Z') c += 'a' - 'A';
if (c >= '0' && c <= '9') {
n *= base;
n += c - '0';
} else if (base == 16 && c >= 'a' && c <= 'f') {
n *= base;
n += c - 'a' + 10;
} else {
/* `l' means long, and `u' means unsigned. */
while (1) {
if (c == 'l' || c == 'L')
;
else if (c == 'u' || c == 'U')
yylval.integer.unsignedp = 1;
else
break;
if (len == 0)
break;
c = *p++;
len--;
}
/* Don't look for any more digits after the suffixes. */
break;
}
}
if (len != 0) {
yyerror ("Invalid number in #if expression");
return ERROR;
}
/* If too big to be signed, consider it unsigned. */
if (n < 0)
yylval.integer.unsignedp = 1;
lexptr = p;
yylval.integer.value = n;
return INT;
}
struct token {
const char *operator;
int token;
};
#ifndef NULL
#define NULL 0
#endif
static struct token tokentab2[] = {
{"&&", AND},
{"||", OR},
{"<<", LSH},
{">>", RSH},
{"==", EQUAL},
{"!=", NOTEQUAL},
{"<=", LEQ},
{">=", GEQ},
{NULL, ERROR}
};
/* Read one token, getting characters through lexptr. */
int
yylex ()
{
register int c;
register int namelen;
register char *tokstart;
register struct token *toktab;
retry:
tokstart = lexptr;
c = *tokstart;
/* See if it is a special token of length 2. */
for (toktab = tokentab2; toktab->operator != NULL; toktab++)
if (c == *toktab->operator && tokstart[1] == toktab->operator[1]) {
lexptr += 2;
return toktab->token;
}
switch (c) {
case 0:
return 0;
case ' ':
case '\t':
case '\r':
case '\n':
lexptr++;
goto retry;
case '\'':
lexptr++;
c = *lexptr++;
if (c == '\\')
c = parse_escape (&lexptr);
/* Sign-extend the constant if chars are signed on target machine. */
{
if (lookup ((const unsigned char *)"__CHAR_UNSIGNED__",
sizeof ("__CHAR_UNSIGNED__")-1, -1)
|| ((c >> (CHAR_TYPE_SIZE - 1)) & 1) == 0)
yylval.integer.value = c & ((1 << CHAR_TYPE_SIZE) - 1);
else
yylval.integer.value = c | ~((1 << CHAR_TYPE_SIZE) - 1);
}
yylval.integer.unsignedp = 0;
c = *lexptr++;
if (c != '\'') {
yyerror ("Invalid character constant in #if");
return ERROR;
}
return CHAR;
/* some of these chars are invalid in constant expressions;
maybe do something about them later */
case '/':
case '+':
case '-':
case '*':
case '%':
case '|':
case '&':
case '^':
case '~':
case '!':
case '@':
case '<':
case '>':
case '(':
case ')':
case '[':
case ']':
case '.':
case '?':
case ':':
case '=':
case '{':
case '}':
case ',':
lexptr++;
return c;
case '"':
yyerror ("double quoted strings not allowed in #if expressions");
return ERROR;
}
if (c >= '0' && c <= '9') {
/* It's a number */
for (namelen = 0;
c = tokstart[namelen], is_idchar[c] || c == '.';
namelen++)
;
return parse_number (namelen);
}
if (!is_idstart[c]) {
yyerror ("Invalid token in expression");
return ERROR;
}
/* It is a name. See how long it is. */
for (namelen = 0;
is_idchar[(int)(unsigned char)tokstart[namelen]];
namelen++)
;
lexptr += namelen;
return NAME;
}
/* Parse a C escape sequence. STRING_PTR points to a variable
containing a pointer to the string to parse. That pointer
is updated past the characters we use. The value of the
escape sequence is returned.
A negative value means the sequence \ newline was seen,
which is supposed to be equivalent to nothing at all.
If \ is followed by a null character, we return a negative
value and leave the string pointer pointing at the null character.
If \ is followed by 000, we return 0 and leave the string pointer
after the zeros. A value of 0 does not mean end of string. */
int
parse_escape (string_ptr)
char **string_ptr;
{
register int c = *(*string_ptr)++;
switch (c)
{
case 'a':
return TARGET_BELL;
case 'b':
return TARGET_BS;
case 'e':
return 033;
case 'f':
return TARGET_FF;
case 'n':
return TARGET_NEWLINE;
case 'r':
return TARGET_CR;
case 't':
return TARGET_TAB;
case 'v':
return TARGET_VT;
case '\n':
return -2;
case 0:
(*string_ptr)--;
return 0;
case '^':
c = *(*string_ptr)++;
if (c == '\\')
c = parse_escape (string_ptr);
if (c == '?')
return 0177;
return (c & 0200) | (c & 037);
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
{
register int i = c - '0';
register int count = 0;
while (++count < 3)
{
c = *(*string_ptr)++;
if (c >= '0' && c <= '7')
i = (i << 3) + c - '0';
else
{
(*string_ptr)--;
break;
}
}
if ((i & ~((1 << CHAR_TYPE_SIZE) - 1)) != 0)
{
i &= (1 << CHAR_TYPE_SIZE) - 1;
warning ("octal character constant does not fit in a byte");
}
return i;
}
case 'x':
{
register int i = 0;
for (;;)
{
c = *(*string_ptr)++;
if (c >= '0' && c <= '9')
i = (i << 4) + c - '0';
else if (c >= 'a' && c <= 'f')
i = (i << 4) + c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
i = (i << 4) + c - 'A' + 10;
else
{
(*string_ptr)--;
break;
}
}
if ((i & ~((1 << BITS_PER_UNIT) - 1)) != 0)
{
i &= (1 << BITS_PER_UNIT) - 1;
warning ("hex character constant does not fit in a byte");
}
return i;
}
default:
return c;
}
}
void
yyerror (s)
const char *s;
{
error (s);
longjmp (parse_return_error, 1);
}
/* This page contains the entry point to this file. */
/* Parse STRING as an expression, and complain if this fails
to use up all of the contents of STRING. */
/* We do not support C comments. They should be removed before
this function is called. */
int
parse_c_expression (string)
char *string;
{
lexptr = string;
if (lexptr == 0 || *lexptr == 0) {
error ("empty #if expression");
return 0; /* don't include the #if group */
}
/* if there is some sort of scanning error, just return 0 and assume
the parsing routine has printed an error message somewhere.
there is surely a better thing to do than this. */
if (setjmp (parse_return_error))
return 0;
if (yyparse ())
return 0; /* actually this is never reached
the way things stand. */
if (*lexptr)
error ("Junk after end of expression.");
return expression_value; /* set by yyparse () */
}
gcc/tradcif.y 0 → 100644
/* Parse C expressions for CCCP.
Copyright (C) 1987 Free Software Foundation.
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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.
In other words, you are welcome to use, share and improve this program.
You are forbidden to forbid anyone else to use, share and improve
what you give them. Help stamp out software-hoarding!
Adapted from expread.y of GDB by Paul Rubin, July 1986.
/* Parse a C expression from text in a string */
%{
#include "config.h"
#include "system.h"
#include <setjmp.h>
int yylex PARAMS ((void));
void yyerror PARAMS ((const char *msgid));
extern void error PARAMS ((const char *msgid, ...));
extern void warning PARAMS ((const char *msgid, ...));
extern struct hashnode *lookup PARAMS ((const unsigned char *, int, int));
int parse_number PARAMS ((int));
int parse_escape PARAMS ((char **));
int parse_c_expression PARAMS ((char *));
int expression_value;
static jmp_buf parse_return_error;
/* some external tables of character types */
extern unsigned char is_idstart[], is_idchar[];
#ifndef CHAR_TYPE_SIZE
#define CHAR_TYPE_SIZE BITS_PER_UNIT
#endif
%}
%union {
struct constant {long value; int unsignedp;} integer;
int voidval;
char *sval;
}
%type <integer> exp exp1 start
%token <integer> INT CHAR
%token <sval> NAME
%token <integer> ERROR
%right '?' ':'
%left ','
%left OR
%left AND
%left '|'
%left '^'
%left '&'
%left EQUAL NOTEQUAL
%left '<' '>' LEQ GEQ
%left LSH RSH
%left '+' '-'
%left '*' '/' '%'
%right UNARY
/* %expect 40 */
%%
start : exp1
{ expression_value = $1.value; }
;
/* Expressions, including the comma operator. */
exp1 : exp
| exp1 ',' exp
{ $$ = $3; }
;
/* Expressions, not including the comma operator. */
exp : '-' exp %prec UNARY
{ $$.value = - $2.value;
$$.unsignedp = $2.unsignedp; }
| '!' exp %prec UNARY
{ $$.value = ! $2.value;
$$.unsignedp = 0; }
| '+' exp %prec UNARY
{ $$ = $2; }
| '~' exp %prec UNARY
{ $$.value = ~ $2.value;
$$.unsignedp = $2.unsignedp; }
| '(' exp1 ')'
{ $$ = $2; }
;
/* Binary operators in order of decreasing precedence. */
exp : exp '*' exp
{ $$.unsignedp = $1.unsignedp || $3.unsignedp;
if ($$.unsignedp)
$$.value = (unsigned) $1.value * $3.value;
else
$$.value = $1.value * $3.value; }
| exp '/' exp
{ if ($3.value == 0)
{
error ("division by zero in #if");
$3.value = 1;
}
$$.unsignedp = $1.unsignedp || $3.unsignedp;
if ($$.unsignedp)
$$.value = (unsigned) $1.value / $3.value;
else
$$.value = $1.value / $3.value; }
| exp '%' exp
{ if ($3.value == 0)
{
error ("division by zero in #if");
$3.value = 1;
}
$$.unsignedp = $1.unsignedp || $3.unsignedp;
if ($$.unsignedp)
$$.value = (unsigned) $1.value % $3.value;
else
$$.value = $1.value % $3.value; }
| exp '+' exp
{ $$.value = $1.value + $3.value;
$$.unsignedp = $1.unsignedp || $3.unsignedp; }
| exp '-' exp
{ $$.value = $1.value - $3.value;
$$.unsignedp = $1.unsignedp || $3.unsignedp; }
| exp LSH exp
{ $$.unsignedp = $1.unsignedp;
if ($$.unsignedp)
$$.value = (unsigned) $1.value << $3.value;
else
$$.value = $1.value << $3.value; }
| exp RSH exp
{ $$.unsignedp = $1.unsignedp;
if ($$.unsignedp)
$$.value = (unsigned) $1.value >> $3.value;
else
$$.value = $1.value >> $3.value; }
| exp EQUAL exp
{ $$.value = ($1.value == $3.value);
$$.unsignedp = 0; }
| exp NOTEQUAL exp
{ $$.value = ($1.value != $3.value);
$$.unsignedp = 0; }
| exp LEQ exp
{ $$.unsignedp = 0;
if ($1.unsignedp || $3.unsignedp)
$$.value =
(unsigned) $1.value <= (unsigned) $3.value;
else
$$.value = $1.value <= $3.value; }
| exp GEQ exp
{ $$.unsignedp = 0;
if ($1.unsignedp || $3.unsignedp)
$$.value =
(unsigned) $1.value >= (unsigned) $3.value;
else
$$.value = $1.value >= $3.value; }
| exp '<' exp
{ $$.unsignedp = 0;
if ($1.unsignedp || $3.unsignedp)
$$.value =
(unsigned) $1.value < (unsigned) $3.value;
else
$$.value = $1.value < $3.value; }
| exp '>' exp
{ $$.unsignedp = 0;
if ($1.unsignedp || $3.unsignedp)
$$.value =
(unsigned) $1.value > (unsigned) $3.value;
else
$$.value = $1.value > $3.value; }
| exp '&' exp
{ $$.value = $1.value & $3.value;
$$.unsignedp = $1.unsignedp || $3.unsignedp; }
| exp '^' exp
{ $$.value = $1.value ^ $3.value;
$$.unsignedp = $1.unsignedp || $3.unsignedp; }
| exp '|' exp
{ $$.value = $1.value | $3.value;
$$.unsignedp = $1.unsignedp || $3.unsignedp; }
| exp AND exp
{ $$.value = ($1.value && $3.value);
$$.unsignedp = 0; }
| exp OR exp
{ $$.value = ($1.value || $3.value);
$$.unsignedp = 0; }
| exp '?' exp ':' exp
{ $$.value = $1.value ? $3.value : $5.value;
$$.unsignedp = $3.unsignedp || $5.unsignedp; }
| INT
{ $$ = yylval.integer; }
| CHAR
{ $$ = yylval.integer; }
| NAME
{ $$.value = 0;
$$.unsignedp = 0; }
;
%%
/* During parsing of a C expression, the pointer to the next character
is in this variable. */
static char *lexptr;
/* Take care of parsing a number (anything that starts with a digit).
Set yylval and return the token type; update lexptr.
LEN is the number of characters in it. */
/* maybe needs to actually deal with floating point numbers */
int
parse_number (olen)
int olen;
{
register char *p = lexptr;
register long n = 0;
register int c;
register int base = 10;
register int len = olen;
for (c = 0; c < len; c++)
if (p[c] == '.') {
/* It's a float since it contains a point. */
yyerror ("floating point numbers not allowed in #if expressions");
return ERROR;
}
yylval.integer.unsignedp = 0;
if (len >= 3 && (!strncmp (p, "0x", 2) || !strncmp (p, "0X", 2))) {
p += 2;
base = 16;
len -= 2;
}
else if (*p == '0')
base = 8;
while (len > 0) {
c = *p++;
len--;
if (c >= 'A' && c <= 'Z') c += 'a' - 'A';
if (c >= '0' && c <= '9') {
n *= base;
n += c - '0';
} else if (base == 16 && c >= 'a' && c <= 'f') {
n *= base;
n += c - 'a' + 10;
} else {
/* `l' means long, and `u' means unsigned. */
while (1) {
if (c == 'l' || c == 'L')
;
else if (c == 'u' || c == 'U')
yylval.integer.unsignedp = 1;
else
break;
if (len == 0)
break;
c = *p++;
len--;
}
/* Don't look for any more digits after the suffixes. */
break;
}
}
if (len != 0) {
yyerror ("Invalid number in #if expression");
return ERROR;
}
/* If too big to be signed, consider it unsigned. */
if (n < 0)
yylval.integer.unsignedp = 1;
lexptr = p;
yylval.integer.value = n;
return INT;
}
struct token {
const char *operator;
int token;
};
#ifndef NULL
#define NULL 0
#endif
static struct token tokentab2[] = {
{"&&", AND},
{"||", OR},
{"<<", LSH},
{">>", RSH},
{"==", EQUAL},
{"!=", NOTEQUAL},
{"<=", LEQ},
{">=", GEQ},
{NULL, ERROR}
};
/* Read one token, getting characters through lexptr. */
int
yylex ()
{
register int c;
register int namelen;
register char *tokstart;
register struct token *toktab;
retry:
tokstart = lexptr;
c = *tokstart;
/* See if it is a special token of length 2. */
for (toktab = tokentab2; toktab->operator != NULL; toktab++)
if (c == *toktab->operator && tokstart[1] == toktab->operator[1]) {
lexptr += 2;
return toktab->token;
}
switch (c) {
case 0:
return 0;
case ' ':
case '\t':
case '\r':
case '\n':
lexptr++;
goto retry;
case '\'':
lexptr++;
c = *lexptr++;
if (c == '\\')
c = parse_escape (&lexptr);
/* Sign-extend the constant if chars are signed on target machine. */
{
if (lookup ((const unsigned char *)"__CHAR_UNSIGNED__",
sizeof ("__CHAR_UNSIGNED__")-1, -1)
|| ((c >> (CHAR_TYPE_SIZE - 1)) & 1) == 0)
yylval.integer.value = c & ((1 << CHAR_TYPE_SIZE) - 1);
else
yylval.integer.value = c | ~((1 << CHAR_TYPE_SIZE) - 1);
}
yylval.integer.unsignedp = 0;
c = *lexptr++;
if (c != '\'') {
yyerror ("Invalid character constant in #if");
return ERROR;
}
return CHAR;
/* some of these chars are invalid in constant expressions;
maybe do something about them later */
case '/':
case '+':
case '-':
case '*':
case '%':
case '|':
case '&':
case '^':
case '~':
case '!':
case '@':
case '<':
case '>':
case '(':
case ')':
case '[':
case ']':
case '.':
case '?':
case ':':
case '=':
case '{':
case '}':
case ',':
lexptr++;
return c;
case '"':
yyerror ("double quoted strings not allowed in #if expressions");
return ERROR;
}
if (c >= '0' && c <= '9') {
/* It's a number */
for (namelen = 0;
c = tokstart[namelen], is_idchar[c] || c == '.';
namelen++)
;
return parse_number (namelen);
}
if (!is_idstart[c]) {
yyerror ("Invalid token in expression");
return ERROR;
}
/* It is a name. See how long it is. */
for (namelen = 0;
is_idchar[(int)(unsigned char)tokstart[namelen]];
namelen++)
;
lexptr += namelen;
return NAME;
}
/* Parse a C escape sequence. STRING_PTR points to a variable
containing a pointer to the string to parse. That pointer
is updated past the characters we use. The value of the
escape sequence is returned.
A negative value means the sequence \ newline was seen,
which is supposed to be equivalent to nothing at all.
If \ is followed by a null character, we return a negative
value and leave the string pointer pointing at the null character.
If \ is followed by 000, we return 0 and leave the string pointer
after the zeros. A value of 0 does not mean end of string. */
int
parse_escape (string_ptr)
char **string_ptr;
{
register int c = *(*string_ptr)++;
switch (c)
{
case 'a':
return TARGET_BELL;
case 'b':
return TARGET_BS;
case 'e':
return 033;
case 'f':
return TARGET_FF;
case 'n':
return TARGET_NEWLINE;
case 'r':
return TARGET_CR;
case 't':
return TARGET_TAB;
case 'v':
return TARGET_VT;
case '\n':
return -2;
case 0:
(*string_ptr)--;
return 0;
case '^':
c = *(*string_ptr)++;
if (c == '\\')
c = parse_escape (string_ptr);
if (c == '?')
return 0177;
return (c & 0200) | (c & 037);
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
{
register int i = c - '0';
register int count = 0;
while (++count < 3)
{
c = *(*string_ptr)++;
if (c >= '0' && c <= '7')
i = (i << 3) + c - '0';
else
{
(*string_ptr)--;
break;
}
}
if ((i & ~((1 << CHAR_TYPE_SIZE) - 1)) != 0)
{
i &= (1 << CHAR_TYPE_SIZE) - 1;
warning ("octal character constant does not fit in a byte");
}
return i;
}
case 'x':
{
register int i = 0;
for (;;)
{
c = *(*string_ptr)++;
if (c >= '0' && c <= '9')
i = (i << 4) + c - '0';
else if (c >= 'a' && c <= 'f')
i = (i << 4) + c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
i = (i << 4) + c - 'A' + 10;
else
{
(*string_ptr)--;
break;
}
}
if ((i & ~((1 << BITS_PER_UNIT) - 1)) != 0)
{
i &= (1 << BITS_PER_UNIT) - 1;
warning ("hex character constant does not fit in a byte");
}
return i;
}
default:
return c;
}
}
void
yyerror (s)
const char *s;
{
error (s);
longjmp (parse_return_error, 1);
}
/* This page contains the entry point to this file. */
/* Parse STRING as an expression, and complain if this fails
to use up all of the contents of STRING. */
/* We do not support C comments. They should be removed before
this function is called. */
int
parse_c_expression (string)
char *string;
{
lexptr = string;
if (lexptr == 0 || *lexptr == 0) {
error ("empty #if expression");
return 0; /* don't include the #if group */
}
/* if there is some sort of scanning error, just return 0 and assume
the parsing routine has printed an error message somewhere.
there is surely a better thing to do than this. */
if (setjmp (parse_return_error))
return 0;
if (yyparse ())
return 0; /* actually this is never reached
the way things stand. */
if (*lexptr)
error ("Junk after end of expression.");
return expression_value; /* set by yyparse () */
}
gcc/tradcpp.c 0 → 100644
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