/* RTL reader for GCC.
- Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002
+ Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004
Free Software Foundation, Inc.
This file is part of GCC.
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 hashval_t 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 validate_const_int PARAMS ((FILE *, const 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. */
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)
{
int 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)
{
char *p;
int c;
/* 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);
/* 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;
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);
}
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;
/* 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 PARAMS ((const char *));
+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;
/* Given a constant definition, return a hash code for its name. */
static hashval_t
-def_hash (def)
- const void *def;
+def_hash (const void *def)
{
unsigned result, i;
const char *string = ((const struct md_constant *) def)->name;
/* 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);
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 (infile, string)
- FILE *infile;
- const char *string;
+validate_const_int (FILE *infile, const char *string)
{
const char *cp;
int valid = 1;
the utilities gen*.c that construct C code from machine descriptions. */
rtx
-read_rtx (infile)
- FILE *infile;
+read_rtx (FILE *infile)
{
int i, j;
RTX_CODE tmp_code;
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 != ']')
{
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);
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