-/* RTL reader for GNU C Compiler.
- Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000, 2001
+/* RTL reader for GCC.
+ Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004
Free Software Foundation, Inc.
This file is part of GCC.
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
-#include "hconfig.h"
+#include "bconfig.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
#include "obstack.h"
#include "hashtab.h"
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-
static htab_t md_constants;
-static void fatal_with_file_and_line PARAMS ((FILE *, const char *, ...))
+static void fatal_with_file_and_line (FILE *, const char *, ...)
ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN;
-static void fatal_expected_char PARAMS ((FILE *, int, int)) ATTRIBUTE_NORETURN;
-static void read_name PARAMS ((char *, FILE *));
-static char *read_string PARAMS ((struct obstack *, FILE *, int));
-static char *read_quoted_string PARAMS ((struct obstack *, FILE *));
-static char *read_braced_string PARAMS ((struct obstack *, FILE *));
-static void read_escape PARAMS ((struct obstack *, FILE *));
-static unsigned def_hash PARAMS ((const void *));
-static int def_name_eq_p PARAMS ((const void *, const void *));
-static void read_constants PARAMS ((FILE *infile, char *tmp_char));
+static void fatal_expected_char (FILE *, int, int) ATTRIBUTE_NORETURN;
+static void read_name (char *, FILE *);
+static char *read_string (struct obstack *, FILE *, int);
+static char *read_quoted_string (struct obstack *, FILE *);
+static char *read_braced_string (struct obstack *, FILE *);
+static void read_escape (struct obstack *, FILE *);
+static hashval_t def_hash (const void *);
+static int def_name_eq_p (const void *, const void *);
+static void read_constants (FILE *infile, char *tmp_char);
+static void validate_const_int (FILE *, const char *);
/* Subroutines of read_rtx. */
const char *read_rtx_filename = "<unknown>";
static void
-fatal_with_file_and_line VPARAMS ((FILE *infile, const char *msg, ...))
+fatal_with_file_and_line (FILE *infile, const char *msg, ...)
{
-#ifndef ANSI_PROTOTYPES
- FILE *infile;
- const char *msg;
-#endif
- va_list ap;
char context[64];
size_t i;
int c;
+ va_list ap;
- VA_START (ap, msg);
-
-#ifndef ANSI_PROTOTYPES
- infile = va_arg (ap, FILE *);
- msg = va_arg (ap, const char *);
-#endif
+ va_start (ap, msg);
fprintf (stderr, "%s:%d: ", read_rtx_filename, read_rtx_lineno);
vfprintf (stderr, msg, ap);
putc ('\n', stderr);
/* Gather some following context. */
- for (i = 0; i < sizeof(context)-1; ++i)
+ for (i = 0; i < sizeof (context)-1; ++i)
{
c = getc (infile);
if (c == EOF)
invalid data. */
static void
-fatal_expected_char (infile, expected_c, actual_c)
- FILE *infile;
- int expected_c, actual_c;
+fatal_expected_char (FILE *infile, int expected_c, int actual_c)
{
fatal_with_file_and_line (infile, "expected character `%c', found `%c'",
expected_c, actual_c);
Tools such as genflags use this function. */
int
-read_skip_spaces (infile)
- FILE *infile;
+read_skip_spaces (FILE *infile)
{
- register int c;
+ int c;
+
while (1)
{
c = getc (infile);
case '/':
{
- register int prevc;
+ int prevc;
c = getc (infile);
if (c != '*')
fatal_expected_char (infile, '*', c);
It is terminated by any of the punctuation chars of rtx printed syntax. */
static void
-read_name (str, infile)
- char *str;
- FILE *infile;
+read_name (char *str, FILE *infile)
{
- register char *p;
- register int c;
+ char *p;
+ int c;
- c = read_skip_spaces(infile);
+ c = read_skip_spaces (infile);
p = str;
while (1)
/* Subroutine of the string readers. Handles backslash escapes.
Caller has read the backslash, but not placed it into the obstack. */
static void
-read_escape (ob, infile)
- struct obstack *ob;
- FILE *infile;
+read_escape (struct obstack *ob, FILE *infile)
{
int c = getc (infile);
+
switch (c)
{
/* Backslash-newline is replaced by nothing, as in C. */
obstack_1grow (ob, c);
}
-
+
/* Read a double-quoted string onto the obstack. Caller has scanned
the leading quote. */
static char *
-read_quoted_string (ob, infile)
- struct obstack *ob;
- FILE *infile;
+read_quoted_string (struct obstack *ob, FILE *infile)
{
int c;
+
while (1)
{
c = getc (infile); /* Read the string */
scanned the leading brace. Note that unlike quoted strings,
the outermost braces _are_ included in the string constant. */
static char *
-read_braced_string (ob, infile)
- struct obstack *ob;
- FILE *infile;
+read_braced_string (struct obstack *ob, FILE *infile)
{
int c;
int brace_depth = 1; /* caller-processed */
+ unsigned long starting_read_rtx_lineno = read_rtx_lineno;
obstack_1grow (ob, '{');
while (brace_depth)
{
c = getc (infile); /* Read the string */
+
if (c == '\n')
read_rtx_lineno++;
else if (c == '{')
read_escape (ob, infile);
continue;
}
+ else if (c == EOF)
+ fatal_with_file_and_line
+ (infile, "missing closing } for opening brace on line %lu",
+ starting_read_rtx_lineno);
obstack_1grow (ob, c);
}
-
+
obstack_1grow (ob, 0);
return obstack_finish (ob);
}
and dispatch to the appropriate string constant reader. */
static char *
-read_string (ob, infile, star_if_braced)
- struct obstack *ob;
- FILE *infile;
- int star_if_braced;
+read_string (struct obstack *ob, FILE *infile, int star_if_braced)
{
char *stringbuf;
int saw_paren = 0;
}
else
fatal_with_file_and_line (infile, "expected `\"' or `{', found `%c'", c);
-
+
if (saw_paren)
{
c = read_skip_spaces (infile);
/* Provide a version of a function to read a long long if the system does
not provide one. */
#if HOST_BITS_PER_WIDE_INT > HOST_BITS_PER_LONG && !defined(HAVE_ATOLL) && !defined(HAVE_ATOQ)
+HOST_WIDE_INT atoll (const char *);
+
HOST_WIDE_INT
-atoll(p)
- const char *p;
+atoll (const char *p)
{
int neg = 0;
HOST_WIDE_INT tmp_wide;
- while (ISSPACE(*p))
+ while (ISSPACE (*p))
p++;
if (*p == '-')
neg = 1, p++;
p++;
tmp_wide = 0;
- while (ISDIGIT(*p))
+ while (ISDIGIT (*p))
{
HOST_WIDE_INT new_wide = tmp_wide*10 + (*p - '0');
if (new_wide < tmp_wide)
{
/* Return INT_MAX equiv on overflow. */
- tmp_wide = (~(unsigned HOST_WIDE_INT)0) >> 1;
+ tmp_wide = (~(unsigned HOST_WIDE_INT) 0) >> 1;
break;
}
tmp_wide = new_wide;
#endif
/* Given a constant definition, return a hash code for its name. */
-static unsigned
-def_hash (def)
- const void *def;
+static hashval_t
+def_hash (const void *def)
{
unsigned result, i;
- const char *string = ((const struct md_constant *)def)->name;
+ const char *string = ((const struct md_constant *) def)->name;
for (result = i = 0;*string++ != '\0'; i++)
result += ((unsigned char) *string << (i % CHAR_BIT));
/* Given two constant definitions, return true if they have the same name. */
static int
-def_name_eq_p (def1, def2)
- const void *def1, *def2;
+def_name_eq_p (const void *def1, const void *def2)
{
- return ! strcmp (((const struct md_constant *)def1)->name,
- ((const struct md_constant *)def2)->name);
+ return ! strcmp (((const struct md_constant *) def1)->name,
+ ((const struct md_constant *) def2)->name);
}
/* INFILE is a FILE pointer to read text from. TMP_CHAR is a buffer suitable
to read a name or number into. Process a define_constants directive,
starting with the optional space after the "define_constants". */
static void
-read_constants (infile, tmp_char)
- FILE *infile;
- char *tmp_char;
+read_constants (FILE *infile, char *tmp_char)
{
int c;
htab_t defs;
a pointer a pointer to the constant definition and INFO.
Stops when CALLBACK returns zero. */
void
-traverse_md_constants (callback, info)
- htab_trav callback;
- void *info;
+traverse_md_constants (htab_trav callback, void *info)
{
if (md_constants)
htab_traverse (md_constants, callback, info);
}
+static void
+validate_const_int (FILE *infile, const char *string)
+{
+ const char *cp;
+ int valid = 1;
+
+ cp = string;
+ while (*cp && ISSPACE (*cp))
+ cp++;
+ if (*cp == '-' || *cp == '+')
+ cp++;
+ if (*cp == 0)
+ valid = 0;
+ for (; *cp; cp++)
+ if (! ISDIGIT (*cp))
+ valid = 0;
+ if (!valid)
+ fatal_with_file_and_line (infile, "invalid decimal constant \"%s\"\n", string);
+}
+
/* Read an rtx in printed representation from INFILE
and return an actual rtx in core constructed accordingly.
read_rtx is not used in the compiler proper, but rather in
the utilities gen*.c that construct C code from machine descriptions. */
rtx
-read_rtx (infile)
- FILE *infile;
+read_rtx (FILE *infile)
{
- register int i, j;
+ int i, j;
RTX_CODE tmp_code;
- register const char *format_ptr;
+ const char *format_ptr;
/* tmp_char is a buffer used for reading decimal integers
and names of rtx types and machine modes.
Therefore, 256 must be enough. */
char tmp_char[256];
rtx return_rtx;
- register int c;
+ int c;
int tmp_int;
HOST_WIDE_INT tmp_wide;
{
XVEC (return_rtx, i) = 0;
break;
- }
+ }
/* Now process the vector. */
case 'E':
if (c != '[')
fatal_expected_char (infile, '[', c);
- /* add expressions to a list, while keeping a count */
+ /* Add expressions to a list, while keeping a count. */
obstack_init (&vector_stack);
while ((c = read_skip_spaces (infile)) && c != ']')
{
ungetc (c, infile);
list_counter++;
- obstack_ptr_grow (&vector_stack, (PTR) read_rtx (infile));
+ obstack_ptr_grow (&vector_stack, read_rtx (infile));
}
if (list_counter > 0)
{
break;
case 'S':
- /* 'S' is an optional string: if a closeparen follows,
- just store NULL for this element. */
- c = read_skip_spaces (infile);
- ungetc (c, infile);
- if (c == ')')
- {
- XSTR (return_rtx, i) = 0;
- break;
- }
-
case 'T':
case 's':
{
char *stringbuf;
+ int star_if_braced;
+
+ c = read_skip_spaces (infile);
+ ungetc (c, infile);
+ if (c == ')')
+ {
+ /* 'S' fields are optional and should be NULL if no string
+ was given. Also allow normal 's' and 'T' strings to be
+ omitted, treating them in the same way as empty strings. */
+ XSTR (return_rtx, i) = (format_ptr[-1] == 'S' ? NULL : "");
+ break;
+ }
/* The output template slot of a DEFINE_INSN,
DEFINE_INSN_AND_SPLIT, or DEFINE_PEEPHOLE automatically
gets a star inserted as its first character, if it is
written with a brace block instead of a string constant. */
- int star_if_braced = (format_ptr[-1] == 'T');
-
+ star_if_braced = (format_ptr[-1] == 'T');
+
stringbuf = read_string (&rtl_obstack, infile, star_if_braced);
/* For insn patterns, we want to provide a default name
case 'w':
read_name (tmp_char, infile);
+ validate_const_int (infile, tmp_char);
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
tmp_wide = atoi (tmp_char);
#else
case 'i':
case 'n':
read_name (tmp_char, infile);
+ validate_const_int (infile, tmp_char);
tmp_int = atoi (tmp_char);
XINT (return_rtx, i) = tmp_int;
break;
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