/* RTL reader for GCC.
Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005
+ 2003, 2004, 2005, 2007, 2008, 2010
Free Software Foundation, Inc.
This file is part of GCC.
GCC 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
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "bconfig.h"
-/* Disable rtl checking; it conflicts with the macro handling. */
+/* Disable rtl checking; it conflicts with the iterator handling. */
#undef ENABLE_RTL_CHECKING
#include "system.h"
#include "rtl.h"
#include "obstack.h"
#include "hashtab.h"
-
-static htab_t md_constants;
+#include "read-md.h"
+#include "gensupport.h"
/* One element in a singly-linked list of (integer, string) pairs. */
struct map_value {
const char *string;
};
-/* Maps a macro or attribute name to a list of (integer, string) pairs.
+/* Maps an iterator or attribute name to a list of (integer, string) pairs.
The integers are mode or code values; the strings are either C conditions
or attribute values. */
struct mapping {
- /* The name of the macro or attribute. */
+ /* The name of the iterator or attribute. */
const char *name;
- /* The group (modes or codes) to which the macro or attribute belongs. */
- struct macro_group *group;
+ /* The group (modes or codes) to which the iterator or attribute belongs. */
+ struct iterator_group *group;
- /* Gives a unique number to the attribute or macro. Numbers are
+ /* Gives a unique number to the attribute or iterator. Numbers are
allocated consecutively, starting at 0. */
int index;
struct map_value *values;
};
-/* A structure for abstracting the common parts of code and mode macros. */
-struct macro_group {
- /* Tables of "mapping" structures, one for attributes and one for macros. */
- htab_t attrs, macros;
+/* A structure for abstracting the common parts of code and mode iterators. */
+struct iterator_group {
+ /* Tables of "mapping" structures, one for attributes and one for iterators. */
+ htab_t attrs, iterators;
/* The number of "real" modes or codes (and by extension, the first
- number available for use as a macro placeholder). */
+ number available for use as an iterator placeholder). */
int num_builtins;
/* Treat the given string as the name of a standard mode or code and
- return its integer value. Use the given file for error reporting. */
- int (*find_builtin) (const char *, FILE *);
+ return its integer value. */
+ int (*find_builtin) (const char *);
/* Return true if the given rtx uses the given mode or code. */
- bool (*uses_macro_p) (rtx, int);
+ bool (*uses_iterator_p) (rtx, int);
/* Make the given rtx use the given mode or code. */
- void (*apply_macro) (rtx, int);
-};
-
-/* Associates PTR (which can be a string, etc.) with the file location
- specified by FILENAME and LINENO. */
-struct ptr_loc {
- const void *ptr;
- const char *filename;
- int lineno;
+ void (*apply_iterator) (rtx, int);
};
-/* A structure used to pass data from read_rtx to apply_macro_traverse
+/* A structure used to pass data from read_rtx to apply_iterator_traverse
via htab_traverse. */
-struct macro_traverse_data {
+struct iterator_traverse_data {
/* Instruction queue. */
rtx queue;
/* Attributes seen for modes. */
struct map_value *mode_maps;
- /* Input file. */
- FILE *infile;
/* The last unknown attribute used as a mode. */
const char *unknown_mode_attr;
};
-/* If CODE is the number of a code macro, return a real rtx code that
+/* If CODE is the number of a code iterator, return a real rtx code that
has the same format. Return CODE otherwise. */
#define BELLWETHER_CODE(CODE) \
((CODE) < NUM_RTX_CODE ? CODE : bellwether_codes[CODE - NUM_RTX_CODE])
-static void fatal_with_file_and_line (FILE *, const char *, ...)
- ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN;
-static void fatal_expected_char (FILE *, int, int) ATTRIBUTE_NORETURN;
-static int find_mode (const char *, FILE *);
-static bool uses_mode_macro_p (rtx, int);
-static void apply_mode_macro (rtx, int);
-static int find_code (const char *, FILE *);
-static bool uses_code_macro_p (rtx, int);
-static void apply_code_macro (rtx, int);
-static const char *apply_macro_to_string (const char *, struct mapping *, int);
-static rtx apply_macro_to_rtx (rtx, struct mapping *, int,
- struct map_value *, FILE *, const char **);
-static bool uses_macro_p (rtx, struct mapping *);
+static int find_mode (const char *);
+static bool uses_mode_iterator_p (rtx, int);
+static void apply_mode_iterator (rtx, int);
+static int find_code (const char *);
+static bool uses_code_iterator_p (rtx, int);
+static void apply_code_iterator (rtx, int);
+static const char *apply_iterator_to_string (const char *, struct mapping *, int);
+static rtx apply_iterator_to_rtx (rtx, struct mapping *, int,
+ struct map_value *, const char **);
+static bool uses_iterator_p (rtx, struct mapping *);
static const char *add_condition_to_string (const char *, const char *);
static void add_condition_to_rtx (rtx, const char *);
-static int apply_macro_traverse (void **, void *);
-static struct mapping *add_mapping (struct macro_group *, htab_t t,
- const char *, FILE *);
+static int apply_iterator_traverse (void **, void *);
+static struct mapping *add_mapping (struct iterator_group *, htab_t t,
+ const char *);
static struct map_value **add_map_value (struct map_value **,
int, const char *);
-static void initialize_macros (void);
-static void read_name (char *, FILE *);
-static hashval_t leading_ptr_hash (const void *);
-static int leading_ptr_eq_p (const void *, const void *);
-static void set_rtx_ptr_loc (const void *, const char *, int);
-static const struct ptr_loc *get_rtx_ptr_loc (const void *);
-static char *read_string (FILE *, int);
-static char *read_quoted_string (FILE *);
-static char *read_braced_string (FILE *);
-static void read_escape (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 *);
-static int find_macro (struct macro_group *, const char *, FILE *);
-static struct mapping *read_mapping (struct macro_group *, htab_t, FILE *);
-static void check_code_macro (struct mapping *, FILE *);
-static rtx read_rtx_1 (FILE *, struct map_value **);
-
-/* The mode and code macro structures. */
-static struct macro_group modes, codes;
+static void initialize_iterators (void);
+static void read_conditions (void);
+static void validate_const_int (const char *);
+static int find_iterator (struct iterator_group *, const char *);
+static struct mapping *read_mapping (struct iterator_group *, htab_t);
+static void check_code_iterator (struct mapping *);
+static rtx read_rtx_code (const char *, struct map_value **);
+static rtx read_nested_rtx (struct map_value **);
+static rtx read_rtx_variadic (struct map_value **, rtx);
+
+/* The mode and code iterator structures. */
+static struct iterator_group modes, codes;
/* Index I is the value of BELLWETHER_CODE (I + NUM_RTX_CODE). */
static enum rtx_code *bellwether_codes;
-/* Obstack used for allocating RTL strings. */
-static struct obstack string_obstack;
-
-/* A table of ptr_locs, hashed on the PTR field. */
-static htab_t ptr_locs;
-
-/* An obstack for the above. Plain xmalloc is a bit heavyweight for a
- small structure like ptr_loc. */
-static struct obstack ptr_loc_obstack;
-
-/* A hash table of triples (A, B, C), where each of A, B and C is a condition
- and A is equivalent to "B && C". This is used to keep track of the source
- of conditions that are made up of separate rtx strings (such as the split
- condition of a define_insn_and_split). */
-static htab_t joined_conditions;
-
-/* An obstack for allocating joined_conditions entries. */
-static struct obstack joined_conditions_obstack;
-
-/* Subroutines of read_rtx. */
-
-/* The current line number for the file. */
-int read_rtx_lineno = 1;
-
-/* The filename for error reporting. */
-const char *read_rtx_filename = "<unknown>";
-
-static void
-fatal_with_file_and_line (FILE *infile, const char *msg, ...)
-{
- char context[64];
- size_t i;
- int c;
- va_list ap;
-
- 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)
- {
- c = getc (infile);
- if (c == EOF)
- break;
- if (c == '\r' || c == '\n')
- break;
- context[i] = c;
- }
- context[i] = '\0';
-
- fprintf (stderr, "%s:%d: following context is `%s'\n",
- read_rtx_filename, read_rtx_lineno, context);
-
- va_end (ap);
- exit (1);
-}
-
-/* Dump code after printing a message. Used when read_rtx finds
- invalid data. */
-
-static void
-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);
-}
-
-/* Implementations of the macro_group callbacks for modes. */
+/* Implementations of the iterator_group callbacks for modes. */
static int
-find_mode (const char *name, FILE *infile)
+find_mode (const char *name)
{
int i;
if (strcmp (GET_MODE_NAME (i), name) == 0)
return i;
- fatal_with_file_and_line (infile, "unknown mode `%s'", name);
+ fatal_with_file_and_line ("unknown mode `%s'", name);
}
static bool
-uses_mode_macro_p (rtx x, int mode)
+uses_mode_iterator_p (rtx x, int mode)
{
return (int) GET_MODE (x) == mode;
}
static void
-apply_mode_macro (rtx x, int mode)
+apply_mode_iterator (rtx x, int mode)
{
- PUT_MODE (x, mode);
+ PUT_MODE (x, (enum machine_mode) mode);
}
-/* Implementations of the macro_group callbacks for codes. */
+/* Implementations of the iterator_group callbacks for codes. */
static int
-find_code (const char *name, FILE *infile)
+find_code (const char *name)
{
int i;
if (strcmp (GET_RTX_NAME (i), name) == 0)
return i;
- fatal_with_file_and_line (infile, "unknown rtx code `%s'", name);
+ fatal_with_file_and_line ("unknown rtx code `%s'", name);
}
static bool
-uses_code_macro_p (rtx x, int code)
+uses_code_iterator_p (rtx x, int code)
{
return (int) GET_CODE (x) == code;
}
static void
-apply_code_macro (rtx x, int code)
+apply_code_iterator (rtx x, int code)
{
- PUT_CODE (x, code);
+ PUT_CODE (x, (enum rtx_code) code);
}
/* Map a code or mode attribute string P to the underlying string for
- MACRO and VALUE. */
+ ITERATOR and VALUE. */
static struct map_value *
-map_attr_string (const char *p, struct mapping *macro, int value)
+map_attr_string (const char *p, struct mapping *iterator, int value)
{
const char *attr;
struct mapping *m;
struct map_value *v;
- /* If there's a "macro:" prefix, check whether the macro name matches.
+ /* If there's a "iterator:" prefix, check whether the iterator name matches.
Set ATTR to the start of the attribute name. */
attr = strchr (p, ':');
if (attr == 0)
attr = p;
else
{
- if (strncmp (p, macro->name, attr - p) != 0
- || macro->name[attr - p] != 0)
+ if (strncmp (p, iterator->name, attr - p) != 0
+ || iterator->name[attr - p] != 0)
return 0;
attr++;
}
/* Find the attribute specification. */
- m = (struct mapping *) htab_find (macro->group->attrs, &attr);
+ m = (struct mapping *) htab_find (iterator->group->attrs, &attr);
if (m == 0)
return 0;
/* Given an attribute string used as a machine mode, return an index
to store in the machine mode to be translated by
- apply_macro_to_rtx. */
+ apply_iterator_to_rtx. */
static unsigned int
mode_attr_index (struct map_value **mode_maps, const char *string)
/* Copy the attribute string into permanent storage, without the
angle brackets around it. */
obstack_grow0 (&string_obstack, string + 1, strlen (string) - 2);
- p = (char *) obstack_finish (&string_obstack);
+ p = XOBFINISH (&string_obstack, char *);
mv = XNEW (struct map_value);
mv->number = *mode_maps == 0 ? 0 : (*mode_maps)->number + 1;
*mode_maps = mv;
/* We return a code which we can map back into this string: the
- number of machine modes + the number of mode macros + the index
+ number of machine modes + the number of mode iterators + the index
we just used. */
- return MAX_MACHINE_MODE + htab_elements (modes.macros) + mv->number;
+ return MAX_MACHINE_MODE + htab_elements (modes.iterators) + mv->number;
}
/* Apply MODE_MAPS to the top level of X, expanding cases where an
- attribute is used for a mode. MACRO is the current macro we are
+ attribute is used for a mode. ITERATOR is the current iterator we are
expanding, and VALUE is the value to which we are expanding it.
- INFILE is used for error messages. This sets *UNKNOWN to true if
- we find a mode attribute which has not yet been defined, and does
- not change it otherwise. */
+ This sets *UNKNOWN to true if we find a mode attribute which has not
+ yet been defined, and does not change it otherwise. */
static void
-apply_mode_maps (rtx x, struct map_value *mode_maps, struct mapping *macro,
- int value, FILE *infile, const char **unknown)
+apply_mode_maps (rtx x, struct map_value *mode_maps, struct mapping *iterator,
+ int value, const char **unknown)
{
unsigned int offset;
int indx;
struct map_value *pm;
- offset = MAX_MACHINE_MODE + htab_elements (modes.macros);
+ offset = MAX_MACHINE_MODE + htab_elements (modes.iterators);
if (GET_MODE (x) < offset)
return;
{
struct map_value *v;
- v = map_attr_string (pm->string, macro, value);
+ v = map_attr_string (pm->string, iterator, value);
if (v)
- PUT_MODE (x, find_mode (v->string, infile));
+ PUT_MODE (x, (enum machine_mode) find_mode (v->string));
else
*unknown = pm->string;
return;
}
}
-/* Given that MACRO is being expanded as VALUE, apply the appropriate
+/* Given that ITERATOR is being expanded as VALUE, apply the appropriate
string substitutions to STRING. Return the new string if any changes
were needed, otherwise return STRING itself. */
static const char *
-apply_macro_to_string (const char *string, struct mapping *macro, int value)
+apply_iterator_to_string (const char *string, struct mapping *iterator, int value)
{
char *base, *copy, *p, *start, *end;
struct map_value *v;
p = start + 1;
*end = 0;
- v = map_attr_string (p, macro, value);
+ v = map_attr_string (p, iterator, value);
*end = '>';
if (v == 0)
continue;
if (base != copy)
{
obstack_grow (&string_obstack, base, strlen (base) + 1);
- copy = obstack_finish (&string_obstack);
- copy_rtx_ptr_loc (copy, string);
+ copy = XOBFINISH (&string_obstack, char *);
+ copy_md_ptr_loc (copy, string);
return copy;
}
return string;
}
-/* Return a copy of ORIGINAL in which all uses of MACRO have been
+/* Return a copy of ORIGINAL in which all uses of ITERATOR have been
replaced by VALUE. MODE_MAPS holds information about attribute
- strings used for modes. INFILE is used for error messages. This
- sets *UNKNOWN_MODE_ATTR to the value of an unknown mode attribute,
- and does not change it otherwise. */
+ strings used for modes. This sets *UNKNOWN_MODE_ATTR to the value of
+ an unknown mode attribute, and does not change it otherwise. */
static rtx
-apply_macro_to_rtx (rtx original, struct mapping *macro, int value,
- struct map_value *mode_maps, FILE *infile,
- const char **unknown_mode_attr)
+apply_iterator_to_rtx (rtx original, struct mapping *iterator, int value,
+ struct map_value *mode_maps,
+ const char **unknown_mode_attr)
{
- struct macro_group *group;
+ struct iterator_group *group;
const char *format_ptr;
int i, j;
rtx x;
/* Create a shallow copy of ORIGINAL. */
bellwether_code = BELLWETHER_CODE (GET_CODE (original));
x = rtx_alloc (bellwether_code);
- memcpy (x, original, RTX_SIZE (bellwether_code));
+ memcpy (x, original, RTX_CODE_SIZE (bellwether_code));
/* Change the mode or code itself. */
- group = macro->group;
- if (group->uses_macro_p (x, macro->index + group->num_builtins))
- group->apply_macro (x, value);
+ group = iterator->group;
+ if (group->uses_iterator_p (x, iterator->index + group->num_builtins))
+ group->apply_iterator (x, value);
if (mode_maps)
- apply_mode_maps (x, mode_maps, macro, value, infile, unknown_mode_attr);
+ apply_mode_maps (x, mode_maps, iterator, value, unknown_mode_attr);
/* Change each string and recursively change each rtx. */
format_ptr = GET_RTX_FORMAT (bellwether_code);
switch (format_ptr[i])
{
case 'T':
- XTMPL (x, i) = apply_macro_to_string (XTMPL (x, i), macro, value);
+ XTMPL (x, i) = apply_iterator_to_string (XTMPL (x, i), iterator, value);
break;
case 'S':
case 's':
- XSTR (x, i) = apply_macro_to_string (XSTR (x, i), macro, value);
+ XSTR (x, i) = apply_iterator_to_string (XSTR (x, i), iterator, value);
break;
case 'e':
- XEXP (x, i) = apply_macro_to_rtx (XEXP (x, i), macro, value,
- mode_maps, infile,
- unknown_mode_attr);
+ XEXP (x, i) = apply_iterator_to_rtx (XEXP (x, i), iterator, value,
+ mode_maps, unknown_mode_attr);
break;
case 'V':
{
XVEC (x, i) = rtvec_alloc (XVECLEN (original, i));
for (j = 0; j < XVECLEN (x, i); j++)
- XVECEXP (x, i, j) = apply_macro_to_rtx (XVECEXP (original, i, j),
- macro, value, mode_maps,
- infile,
- unknown_mode_attr);
+ XVECEXP (x, i, j) = apply_iterator_to_rtx (XVECEXP (original, i, j),
+ iterator, value, mode_maps,
+ unknown_mode_attr);
}
break;
return x;
}
-/* Return true if X (or some subexpression of X) uses macro MACRO. */
+/* Return true if X (or some subexpression of X) uses iterator ITERATOR. */
static bool
-uses_macro_p (rtx x, struct mapping *macro)
+uses_iterator_p (rtx x, struct mapping *iterator)
{
- struct macro_group *group;
+ struct iterator_group *group;
const char *format_ptr;
int i, j;
if (x == 0)
return false;
- group = macro->group;
- if (group->uses_macro_p (x, macro->index + group->num_builtins))
+ group = iterator->group;
+ if (group->uses_iterator_p (x, iterator->index + group->num_builtins))
return true;
format_ptr = GET_RTX_FORMAT (BELLWETHER_CODE (GET_CODE (x)));
switch (format_ptr[i])
{
case 'e':
- if (uses_macro_p (XEXP (x, i), macro))
+ if (uses_iterator_p (XEXP (x, i), iterator))
return true;
break;
case 'E':
if (XVEC (x, i))
for (j = 0; j < XVECLEN (x, i); j++)
- if (uses_macro_p (XVECEXP (x, i, j), macro))
+ if (uses_iterator_p (XVECEXP (x, i, j), iterator))
return true;
break;
}
/* A htab_traverse callback. Search the EXPR_LIST given by DATA
- for rtxes that use the macro in *SLOT. Replace each such rtx
+ for rtxes that use the iterator in *SLOT. Replace each such rtx
with a list of expansions. */
static int
-apply_macro_traverse (void **slot, void *data)
+apply_iterator_traverse (void **slot, void *data)
{
- struct macro_traverse_data *mtd = (struct macro_traverse_data *) data;
- struct mapping *macro;
+ struct iterator_traverse_data *mtd = (struct iterator_traverse_data *) data;
+ struct mapping *iterator;
struct map_value *v;
rtx elem, new_elem, original, x;
- macro = (struct mapping *) *slot;
+ iterator = (struct mapping *) *slot;
for (elem = mtd->queue; elem != 0; elem = XEXP (elem, 1))
- if (uses_macro_p (XEXP (elem, 0), macro))
+ if (uses_iterator_p (XEXP (elem, 0), iterator))
{
- /* For each macro we expand, we set UNKNOWN_MODE_ATTR to NULL.
- If apply_macro_rtx finds an unknown attribute for a mode,
+ /* For each iterator we expand, we set UNKNOWN_MODE_ATTR to NULL.
+ If apply_iterator_rtx finds an unknown attribute for a mode,
it will set it to the attribute. We want to know whether
the attribute is unknown after we have expanded all
- possible macros, so setting it to NULL here gives us the
+ possible iterators, so setting it to NULL here gives us the
right result when the hash table traversal is complete. */
mtd->unknown_mode_attr = NULL;
original = XEXP (elem, 0);
- for (v = macro->values; v != 0; v = v->next)
+ for (v = iterator->values; v != 0; v = v->next)
{
- x = apply_macro_to_rtx (original, macro, v->number,
- mtd->mode_maps, mtd->infile,
- &mtd->unknown_mode_attr);
+ x = apply_iterator_to_rtx (original, iterator, v->number,
+ mtd->mode_maps,
+ &mtd->unknown_mode_attr);
add_condition_to_rtx (x, v->string);
- if (v != macro->values)
+ if (v != iterator->values)
{
/* Insert a new EXPR_LIST node after ELEM and put the
new expansion there. */
}
/* Add a new "mapping" structure to hashtable TABLE. NAME is the name
- of the mapping, GROUP is the group to which it belongs, and INFILE
- is the file that defined the mapping. */
+ of the mapping and GROUP is the group to which it belongs. */
static struct mapping *
-add_mapping (struct macro_group *group, htab_t table,
- const char *name, FILE *infile)
+add_mapping (struct iterator_group *group, htab_t table, const char *name)
{
struct mapping *m;
void **slot;
slot = htab_find_slot (table, m, INSERT);
if (*slot != 0)
- fatal_with_file_and_line (infile, "`%s' already defined", name);
+ fatal_with_file_and_line ("`%s' already defined", name);
*slot = m;
return m;
/* Do one-time initialization of the mode and code attributes. */
static void
-initialize_macros (void)
+initialize_iterators (void)
{
struct mapping *lower, *upper;
struct map_value **lower_ptr, **upper_ptr;
char *copy, *p;
int i;
- modes.attrs = htab_create (13, def_hash, def_name_eq_p, 0);
- modes.macros = htab_create (13, def_hash, def_name_eq_p, 0);
+ modes.attrs = htab_create (13, leading_string_hash, leading_string_eq_p, 0);
+ modes.iterators = htab_create (13, leading_string_hash,
+ leading_string_eq_p, 0);
modes.num_builtins = MAX_MACHINE_MODE;
modes.find_builtin = find_mode;
- modes.uses_macro_p = uses_mode_macro_p;
- modes.apply_macro = apply_mode_macro;
+ modes.uses_iterator_p = uses_mode_iterator_p;
+ modes.apply_iterator = apply_mode_iterator;
- codes.attrs = htab_create (13, def_hash, def_name_eq_p, 0);
- codes.macros = htab_create (13, def_hash, def_name_eq_p, 0);
+ codes.attrs = htab_create (13, leading_string_hash, leading_string_eq_p, 0);
+ codes.iterators = htab_create (13, leading_string_hash,
+ leading_string_eq_p, 0);
codes.num_builtins = NUM_RTX_CODE;
codes.find_builtin = find_code;
- codes.uses_macro_p = uses_code_macro_p;
- codes.apply_macro = apply_code_macro;
+ codes.uses_iterator_p = uses_code_iterator_p;
+ codes.apply_iterator = apply_code_iterator;
- lower = add_mapping (&modes, modes.attrs, "mode", 0);
- upper = add_mapping (&modes, modes.attrs, "MODE", 0);
+ lower = add_mapping (&modes, modes.attrs, "mode");
+ upper = add_mapping (&modes, modes.attrs, "MODE");
lower_ptr = &lower->values;
upper_ptr = &upper->values;
for (i = 0; i < MAX_MACHINE_MODE; i++)
lower_ptr = add_map_value (lower_ptr, i, copy);
}
- lower = add_mapping (&codes, codes.attrs, "code", 0);
- upper = add_mapping (&codes, codes.attrs, "CODE", 0);
+ lower = add_mapping (&codes, codes.attrs, "code");
+ upper = add_mapping (&codes, codes.attrs, "CODE");
lower_ptr = &lower->values;
upper_ptr = &upper->values;
for (i = 0; i < NUM_RTX_CODE; i++)
upper_ptr = add_map_value (upper_ptr, i, copy);
}
}
-
-/* Return a hash value for the pointer pointed to by DEF. */
-
-static hashval_t
-leading_ptr_hash (const void *def)
-{
- return htab_hash_pointer (*(const void *const *) def);
-}
-
-/* Return true if DEF1 and DEF2 are pointers to the same pointer. */
-
-static int
-leading_ptr_eq_p (const void *def1, const void *def2)
-{
- return *(const void *const *) def1 == *(const void *const *) def2;
-}
-
-/* Associate PTR with the file position given by FILENAME and LINENO. */
-
-static void
-set_rtx_ptr_loc (const void *ptr, const char *filename, int lineno)
-{
- struct ptr_loc *loc;
-
- loc = (struct ptr_loc *) obstack_alloc (&ptr_loc_obstack,
- sizeof (struct ptr_loc));
- loc->ptr = ptr;
- loc->filename = filename;
- loc->lineno = lineno;
- *htab_find_slot (ptr_locs, loc, INSERT) = loc;
-}
-
-/* Return the position associated with pointer PTR. Return null if no
- position was set. */
-
-static const struct ptr_loc *
-get_rtx_ptr_loc (const void *ptr)
-{
- return (const struct ptr_loc *) htab_find (ptr_locs, &ptr);
-}
-
-/* Associate NEW_PTR with the same file position as OLD_PTR. */
-
-void
-copy_rtx_ptr_loc (const void *new_ptr, const void *old_ptr)
-{
- const struct ptr_loc *loc = get_rtx_ptr_loc (old_ptr);
- if (loc != 0)
- set_rtx_ptr_loc (new_ptr, loc->filename, loc->lineno);
-}
-
-/* If PTR is associated with a known file position, print a #line
- directive for it. */
-
-void
-print_rtx_ptr_loc (const void *ptr)
-{
- const struct ptr_loc *loc = get_rtx_ptr_loc (ptr);
- if (loc != 0)
- printf ("#line %d \"%s\"\n", loc->lineno, loc->filename);
-}
-
-/* Return a condition that satisfies both COND1 and COND2. Either string
- may be null or empty. */
-
-const char *
-join_c_conditions (const char *cond1, const char *cond2)
-{
- char *result;
- const void **entry;
-
- if (cond1 == 0 || cond1[0] == 0)
- return cond2;
-
- if (cond2 == 0 || cond2[0] == 0)
- return cond1;
-
- result = concat ("(", cond1, ") && (", cond2, ")", NULL);
- obstack_ptr_grow (&joined_conditions_obstack, result);
- obstack_ptr_grow (&joined_conditions_obstack, cond1);
- obstack_ptr_grow (&joined_conditions_obstack, cond2);
- entry = obstack_finish (&joined_conditions_obstack);
- *htab_find_slot (joined_conditions, entry, INSERT) = entry;
- return result;
-}
-
-/* Print condition COND, wrapped in brackets. If COND was created by
- join_c_conditions, recursively invoke this function for the original
- conditions and join the result with "&&". Otherwise print a #line
- directive for COND if its original file position is known. */
-
-void
-print_c_condition (const char *cond)
-{
- const void **halves = htab_find (joined_conditions, &cond);
- if (halves != 0)
- {
- printf ("(");
- print_c_condition (halves[1]);
- printf (" && ");
- print_c_condition (halves[2]);
- printf (")");
- }
- else
- {
- putc ('\n', stdout);
- print_rtx_ptr_loc (cond);
- printf ("(%s)", cond);
- }
-}
-
-/* Read chars from INFILE until a non-whitespace char
- and return that. Comments, both Lisp style and C style,
- are treated as whitespace.
- Tools such as genflags use this function. */
-
-int
-read_skip_spaces (FILE *infile)
-{
- int c;
-
- while (1)
- {
- c = getc (infile);
- switch (c)
- {
- case '\n':
- read_rtx_lineno++;
- break;
-
- case ' ': case '\t': case '\f': case '\r':
- break;
-
- case ';':
- do
- c = getc (infile);
- while (c != '\n' && c != EOF);
- read_rtx_lineno++;
- break;
-
- case '/':
- {
- int prevc;
- c = getc (infile);
- if (c != '*')
- fatal_expected_char (infile, '*', c);
-
- prevc = 0;
- while ((c = getc (infile)) && c != EOF)
- {
- if (c == '\n')
- read_rtx_lineno++;
- else if (prevc == '*' && c == '/')
- break;
- prevc = c;
- }
- }
- break;
-
- default:
- return c;
- }
- }
-}
-
-/* Read an rtx code name into the buffer STR[].
- It is terminated by any of the punctuation chars of rtx printed syntax. */
-
-static void
-read_name (char *str, FILE *infile)
-{
- char *p;
- int c;
-
- c = read_skip_spaces (infile);
-
- p = str;
- while (1)
- {
- if (c == ' ' || c == '\n' || c == '\t' || c == '\f' || c == '\r')
- break;
- if (c == ':' || c == ')' || c == ']' || c == '"' || c == '/'
- || c == '(' || c == '[')
- {
- ungetc (c, infile);
- break;
- }
- *p++ = c;
- c = getc (infile);
- }
- if (p == str)
- fatal_with_file_and_line (infile, "missing name or number");
- if (c == '\n')
- read_rtx_lineno++;
-
- *p = 0;
-
- if (md_constants)
- {
- /* Do constant expansion. */
- struct md_constant *def;
-
- p = str;
- do
- {
- struct md_constant tmp_def;
-
- tmp_def.name = p;
- def = (struct md_constant *) htab_find (md_constants, &tmp_def);
- if (def)
- p = def->value;
- } while (def);
- if (p != str)
- strcpy (str, p);
- }
-}
-
-/* Subroutine of the string readers. Handles backslash escapes.
- Caller has read the backslash, but not placed it into the obstack. */
-static void
-read_escape (FILE *infile)
-{
- int c = getc (infile);
-
- switch (c)
- {
- /* Backslash-newline is replaced by nothing, as in C. */
- case '\n':
- read_rtx_lineno++;
- return;
-
- /* \" \' \\ are replaced by the second character. */
- case '\\':
- case '"':
- case '\'':
- break;
-
- /* Standard C string escapes:
- \a \b \f \n \r \t \v
- \[0-7] \x
- all are passed through to the output string unmolested.
- In normal use these wind up in a string constant processed
- by the C compiler, which will translate them appropriately.
- We do not bother checking that \[0-7] are followed by up to
- two octal digits, or that \x is followed by N hex digits.
- \? \u \U are left out because they are not in traditional C. */
- case 'a': case 'b': case 'f': case 'n': case 'r': case 't': case 'v':
- case '0': case '1': case '2': case '3': case '4': case '5': case '6':
- case '7': case 'x':
- obstack_1grow (&string_obstack, '\\');
- break;
-
- /* \; makes stuff for a C string constant containing
- newline and tab. */
- case ';':
- obstack_grow (&string_obstack, "\\n\\t", 4);
- return;
-
- /* pass anything else through, but issue a warning. */
- default:
- fprintf (stderr, "%s:%d: warning: unrecognized escape \\%c\n",
- read_rtx_filename, read_rtx_lineno, c);
- obstack_1grow (&string_obstack, '\\');
- break;
- }
-
- obstack_1grow (&string_obstack, c);
-}
-
-
-/* Read a double-quoted string onto the obstack. Caller has scanned
- the leading quote. */
-static char *
-read_quoted_string (FILE *infile)
-{
- int c;
-
- while (1)
- {
- c = getc (infile); /* Read the string */
- if (c == '\n')
- read_rtx_lineno++;
- else if (c == '\\')
- {
- read_escape (infile);
- continue;
- }
- else if (c == '"')
- break;
-
- obstack_1grow (&string_obstack, c);
- }
-
- obstack_1grow (&string_obstack, 0);
- return (char *) obstack_finish (&string_obstack);
-}
-
-/* Read a braced string (a la Tcl) onto the string obstack. Caller
- has scanned the leading brace. Note that unlike quoted strings,
- the outermost braces _are_ included in the string constant. */
-static char *
-read_braced_string (FILE *infile)
-{
- int c;
- int brace_depth = 1; /* caller-processed */
- unsigned long starting_read_rtx_lineno = read_rtx_lineno;
-
- obstack_1grow (&string_obstack, '{');
- while (brace_depth)
- {
- c = getc (infile); /* Read the string */
-
- if (c == '\n')
- read_rtx_lineno++;
- else if (c == '{')
- brace_depth++;
- else if (c == '}')
- brace_depth--;
- else if (c == '\\')
- {
- read_escape (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 (&string_obstack, c);
- }
-
- obstack_1grow (&string_obstack, 0);
- return (char *) obstack_finish (&string_obstack);
-}
-
-/* Read some kind of string constant. This is the high-level routine
- used by read_rtx. It handles surrounding parentheses, leading star,
- and dispatch to the appropriate string constant reader. */
-
-static char *
-read_string (FILE *infile, int star_if_braced)
-{
- char *stringbuf;
- int saw_paren = 0;
- int c, old_lineno;
-
- c = read_skip_spaces (infile);
- if (c == '(')
- {
- saw_paren = 1;
- c = read_skip_spaces (infile);
- }
-
- old_lineno = read_rtx_lineno;
- if (c == '"')
- stringbuf = read_quoted_string (infile);
- else if (c == '{')
- {
- if (star_if_braced)
- obstack_1grow (&string_obstack, '*');
- stringbuf = read_braced_string (infile);
- }
- else
- fatal_with_file_and_line (infile, "expected `\"' or `{', found `%c'", c);
-
- if (saw_paren)
- {
- c = read_skip_spaces (infile);
- if (c != ')')
- fatal_expected_char (infile, ')', c);
- }
-
- set_rtx_ptr_loc (stringbuf, read_rtx_filename, old_lineno);
- return stringbuf;
-}
\f
/* Provide a version of a function to read a long long if the system does
not provide one. */
return tmp_wide;
}
#endif
-
-/* Given an object that starts with a char * name field, return a hash
- code for its name. */
-static hashval_t
-def_hash (const void *def)
-{
- unsigned result, i;
- const char *string = *(const char *const *) def;
-
- for (result = i = 0; *string++ != '\0'; i++)
- result += ((unsigned char) *string << (i % CHAR_BIT));
- return result;
-}
-
-/* Given two objects that start with char * name fields, return true if
- they have the same name. */
-static int
-def_name_eq_p (const void *def1, const void *def2)
-{
- return ! strcmp (*(const char *const *) def1,
- *(const char *const *) def2);
-}
-
-/* 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". */
+\f
+/* Process a define_conditions directive, starting with the optional
+ space after the "define_conditions". The directive looks like this:
+
+ (define_conditions [
+ (number "string")
+ (number "string")
+ ...
+ ])
+
+ It's not intended to appear in machine descriptions. It is
+ generated by (the program generated by) genconditions.c, and
+ slipped in at the beginning of the sequence of MD files read by
+ most of the other generators. */
static void
-read_constants (FILE *infile, char *tmp_char)
+read_conditions (void)
{
int c;
- htab_t defs;
- c = read_skip_spaces (infile);
+ c = read_skip_spaces ();
if (c != '[')
- fatal_expected_char (infile, '[', c);
- defs = md_constants;
- if (! defs)
- defs = htab_create (32, def_hash, def_name_eq_p, (htab_del) 0);
- /* Disable constant expansion during definition processing. */
- md_constants = 0;
- while ( (c = read_skip_spaces (infile)) != ']')
+ fatal_expected_char ('[', c);
+
+ while ( (c = read_skip_spaces ()) != ']')
{
- struct md_constant *def;
- void **entry_ptr;
+ struct md_name name;
+ char *expr;
+ int value;
if (c != '(')
- fatal_expected_char (infile, '(', c);
- def = XNEW (struct md_constant);
- def->name = tmp_char;
- read_name (tmp_char, infile);
- entry_ptr = htab_find_slot (defs, def, INSERT);
- if (! *entry_ptr)
- def->name = xstrdup (tmp_char);
- c = read_skip_spaces (infile);
- ungetc (c, infile);
- read_name (tmp_char, infile);
- if (! *entry_ptr)
- {
- def->value = xstrdup (tmp_char);
- *entry_ptr = def;
- }
- else
- {
- def = (struct md_constant *) *entry_ptr;
- if (strcmp (def->value, tmp_char))
- fatal_with_file_and_line (infile,
- "redefinition of %s, was %s, now %s",
- def->name, def->value, tmp_char);
- }
- c = read_skip_spaces (infile);
+ fatal_expected_char ('(', c);
+
+ read_name (&name);
+ validate_const_int (name.string);
+ value = atoi (name.string);
+
+ c = read_skip_spaces ();
+ if (c != '"')
+ fatal_expected_char ('"', c);
+ expr = read_quoted_string ();
+
+ c = read_skip_spaces ();
if (c != ')')
- fatal_expected_char (infile, ')', c);
- }
- md_constants = defs;
- c = read_skip_spaces (infile);
- if (c != ')')
- fatal_expected_char (infile, ')', c);
-}
+ fatal_expected_char (')', c);
-/* For every constant definition, call CALLBACK with two arguments:
- a pointer a pointer to the constant definition and INFO.
- Stops when CALLBACK returns zero. */
-void
-traverse_md_constants (htab_trav callback, void *info)
-{
- if (md_constants)
- htab_traverse (md_constants, callback, info);
+ add_c_test (expr, value);
+ }
}
static void
-validate_const_int (FILE *infile, const char *string)
+validate_const_int (const char *string)
{
const char *cp;
int valid = 1;
if (! ISDIGIT (*cp))
valid = 0;
if (!valid)
- fatal_with_file_and_line (infile, "invalid decimal constant \"%s\"\n", string);
+ fatal_with_file_and_line ("invalid decimal constant \"%s\"\n", string);
}
/* Search GROUP for a mode or code called NAME and return its numerical
- identifier. INFILE is the file that contained NAME. */
+ identifier. */
static int
-find_macro (struct macro_group *group, const char *name, FILE *infile)
+find_iterator (struct iterator_group *group, const char *name)
{
struct mapping *m;
- m = (struct mapping *) htab_find (group->macros, &name);
+ m = (struct mapping *) htab_find (group->iterators, &name);
if (m != 0)
return m->index + group->num_builtins;
- return group->find_builtin (name, infile);
+ return group->find_builtin (name);
}
/* Finish reading a declaration of the form:
(define... <name> [<value1> ... <valuen>])
- from INFILE, where each <valuei> is either a bare symbol name or a
+ from the MD file, where each <valuei> is either a bare symbol name or a
"(<name> <string>)" pair. The "(define..." part has already been read.
Represent the declaration as a "mapping" structure; add it to TABLE
(which belongs to GROUP) and return it. */
static struct mapping *
-read_mapping (struct macro_group *group, htab_t table, FILE *infile)
+read_mapping (struct iterator_group *group, htab_t table)
{
- char tmp_char[256];
+ struct md_name name;
struct mapping *m;
struct map_value **end_ptr;
const char *string;
int number, c;
/* Read the mapping name and create a structure for it. */
- read_name (tmp_char, infile);
- m = add_mapping (group, table, tmp_char, infile);
+ read_name (&name);
+ m = add_mapping (group, table, name.string);
- c = read_skip_spaces (infile);
+ c = read_skip_spaces ();
if (c != '[')
- fatal_expected_char (infile, '[', c);
+ fatal_expected_char ('[', c);
/* Read each value. */
end_ptr = &m->values;
- c = read_skip_spaces (infile);
+ c = read_skip_spaces ();
do
{
if (c != '(')
{
/* A bare symbol name that is implicitly paired to an
empty string. */
- ungetc (c, infile);
- read_name (tmp_char, infile);
+ unread_char (c);
+ read_name (&name);
string = "";
}
else
{
/* A "(name string)" pair. */
- read_name (tmp_char, infile);
- string = read_string (infile, false);
- c = read_skip_spaces (infile);
+ read_name (&name);
+ string = read_string (false);
+ c = read_skip_spaces ();
if (c != ')')
- fatal_expected_char (infile, ')', c);
+ fatal_expected_char (')', c);
}
- number = group->find_builtin (tmp_char, infile);
+ number = group->find_builtin (name.string);
end_ptr = add_map_value (end_ptr, number, string);
- c = read_skip_spaces (infile);
+ c = read_skip_spaces ();
}
while (c != ']');
- c = read_skip_spaces (infile);
- if (c != ')')
- fatal_expected_char (infile, ')', c);
-
return m;
}
-/* Check newly-created code macro MACRO to see whether every code has the
- same format. Initialize the macro's entry in bellwether_codes. */
+/* Check newly-created code iterator ITERATOR to see whether every code has the
+ same format. Initialize the iterator's entry in bellwether_codes. */
static void
-check_code_macro (struct mapping *macro, FILE *infile)
+check_code_iterator (struct mapping *iterator)
{
struct map_value *v;
enum rtx_code bellwether;
- bellwether = macro->values->number;
- for (v = macro->values->next; v != 0; v = v->next)
+ bellwether = (enum rtx_code) iterator->values->number;
+ for (v = iterator->values->next; v != 0; v = v->next)
if (strcmp (GET_RTX_FORMAT (bellwether), GET_RTX_FORMAT (v->number)) != 0)
- fatal_with_file_and_line (infile, "code macro `%s' combines "
- "different rtx formats", macro->name);
+ fatal_with_file_and_line ("code iterator `%s' combines "
+ "different rtx formats", iterator->name);
bellwether_codes = XRESIZEVEC (enum rtx_code, bellwether_codes,
- macro->index + 1);
- bellwether_codes[macro->index] = bellwether;
+ iterator->index + 1);
+ bellwether_codes[iterator->index] = bellwether;
}
-/* Read an rtx in printed representation from INFILE and store its
- core representation in *X. Also store the line number of the
- opening '(' in *LINENO. Return true on success or false if the
- end of file has been reached.
-
- read_rtx is not used in the compiler proper, but rather in
- the utilities gen*.c that construct C code from machine descriptions. */
+/* Read an rtx-related declaration from the MD file, given that it
+ starts with directive name RTX_NAME. Return true if it expands to
+ one or more rtxes (as defined by rtx.def). When returning true,
+ store the list of rtxes as an EXPR_LIST in *X. */
bool
-read_rtx (FILE *infile, rtx *x, int *lineno)
+read_rtx (const char *rtx_name, rtx *x)
{
- static rtx queue_head, queue_next;
- static int queue_lineno;
- int c;
+ static rtx queue_head;
+ struct map_value *mode_maps;
+ struct iterator_traverse_data mtd;
/* Do one-time initialization. */
if (queue_head == 0)
{
- initialize_macros ();
- obstack_init (&string_obstack);
+ initialize_iterators ();
queue_head = rtx_alloc (EXPR_LIST);
- ptr_locs = htab_create (161, leading_ptr_hash, leading_ptr_eq_p, 0);
- obstack_init (&ptr_loc_obstack);
- joined_conditions = htab_create (161, leading_ptr_hash,
- leading_ptr_eq_p, 0);
- obstack_init (&joined_conditions_obstack);
}
- if (queue_next == 0)
+ /* Handle various rtx-related declarations that aren't themselves
+ encoded as rtxes. */
+ if (strcmp (rtx_name, "define_conditions") == 0)
+ {
+ read_conditions ();
+ return false;
+ }
+ if (strcmp (rtx_name, "define_mode_attr") == 0)
+ {
+ read_mapping (&modes, modes.attrs);
+ return false;
+ }
+ if (strcmp (rtx_name, "define_mode_iterator") == 0)
{
- struct map_value *mode_maps;
- struct macro_traverse_data mtd;
-
- c = read_skip_spaces (infile);
- if (c == EOF)
- return false;
- ungetc (c, infile);
-
- queue_next = queue_head;
- queue_lineno = read_rtx_lineno;
- mode_maps = 0;
- XEXP (queue_next, 0) = read_rtx_1 (infile, &mode_maps);
- XEXP (queue_next, 1) = 0;
-
- mtd.queue = queue_next;
- mtd.mode_maps = mode_maps;
- mtd.infile = infile;
- mtd.unknown_mode_attr = mode_maps ? mode_maps->string : NULL;
- htab_traverse (modes.macros, apply_macro_traverse, &mtd);
- htab_traverse (codes.macros, apply_macro_traverse, &mtd);
- if (mtd.unknown_mode_attr)
- fatal_with_file_and_line (infile,
- "undefined attribute '%s' used for mode",
- mtd.unknown_mode_attr);
+ read_mapping (&modes, modes.iterators);
+ return false;
+ }
+ if (strcmp (rtx_name, "define_code_attr") == 0)
+ {
+ read_mapping (&codes, codes.attrs);
+ return false;
+ }
+ if (strcmp (rtx_name, "define_code_iterator") == 0)
+ {
+ check_code_iterator (read_mapping (&codes, codes.iterators));
+ return false;
}
- *x = XEXP (queue_next, 0);
- *lineno = queue_lineno;
- queue_next = XEXP (queue_next, 1);
+ mode_maps = 0;
+ XEXP (queue_head, 0) = read_rtx_code (rtx_name, &mode_maps);
+ XEXP (queue_head, 1) = 0;
+ mtd.queue = queue_head;
+ mtd.mode_maps = mode_maps;
+ mtd.unknown_mode_attr = mode_maps ? mode_maps->string : NULL;
+ htab_traverse (modes.iterators, apply_iterator_traverse, &mtd);
+ htab_traverse (codes.iterators, apply_iterator_traverse, &mtd);
+ if (mtd.unknown_mode_attr)
+ fatal_with_file_and_line ("undefined attribute '%s' used for mode",
+ mtd.unknown_mode_attr);
+
+ *x = queue_head;
return true;
}
-/* Subroutine of read_rtx that reads one construct from INFILE but
- doesn't apply any macros. */
+/* Subroutine of read_rtx and read_nested_rtx. CODE_NAME is the name of
+ either an rtx code or a code iterator. Parse the rest of the rtx and
+ return it. MODE_MAPS is as for iterator_traverse_data. */
static rtx
-read_rtx_1 (FILE *infile, struct map_value **mode_maps)
+read_rtx_code (const char *code_name, struct map_value **mode_maps)
{
int i;
RTX_CODE real_code, bellwether_code;
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];
+ struct md_name name;
rtx return_rtx;
int c;
int tmp_int;
rtx value; /* Value of this node. */
};
- again:
- c = read_skip_spaces (infile); /* Should be open paren. */
- if (c != '(')
- fatal_expected_char (infile, '(', c);
-
- read_name (tmp_char, infile);
- if (strcmp (tmp_char, "nil") == 0)
- {
- /* (nil) stands for an expression that isn't there. */
- c = read_skip_spaces (infile);
- if (c != ')')
- fatal_expected_char (infile, ')', c);
- return 0;
- }
- if (strcmp (tmp_char, "define_constants") == 0)
- {
- read_constants (infile, tmp_char);
- goto again;
- }
- if (strcmp (tmp_char, "define_mode_attr") == 0)
- {
- read_mapping (&modes, modes.attrs, infile);
- goto again;
- }
- if (strcmp (tmp_char, "define_mode_macro") == 0)
- {
- read_mapping (&modes, modes.macros, infile);
- goto again;
- }
- if (strcmp (tmp_char, "define_code_attr") == 0)
- {
- read_mapping (&codes, codes.attrs, infile);
- goto again;
- }
- if (strcmp (tmp_char, "define_code_macro") == 0)
- {
- check_code_macro (read_mapping (&codes, codes.macros, infile), infile);
- goto again;
- }
- real_code = find_macro (&codes, tmp_char, infile);
+ real_code = (enum rtx_code) find_iterator (&codes, code_name);
bellwether_code = BELLWETHER_CODE (real_code);
/* If we end up with an insn expression then we free this space below. */
/* If what follows is `: mode ', read it and
store the mode in the rtx. */
- i = read_skip_spaces (infile);
+ i = read_skip_spaces ();
if (i == ':')
{
unsigned int mode;
- read_name (tmp_char, infile);
- if (tmp_char[0] != '<' || tmp_char[strlen (tmp_char) - 1] != '>')
- mode = find_macro (&modes, tmp_char, infile);
+ read_name (&name);
+ if (name.string[0] != '<' || name.string[strlen (name.string) - 1] != '>')
+ mode = find_iterator (&modes, name.string);
else
- mode = mode_attr_index (mode_maps, tmp_char);
- PUT_MODE (return_rtx, mode);
+ mode = mode_attr_index (mode_maps, name.string);
+ PUT_MODE (return_rtx, (enum machine_mode) mode);
if (GET_MODE (return_rtx) != mode)
- fatal_with_file_and_line (infile, "mode too large");
+ fatal_with_file_and_line ("mode too large");
}
else
- ungetc (i, infile);
+ unread_char (i);
for (i = 0; format_ptr[i] != 0; i++)
switch (format_ptr[i])
case 'e':
case 'u':
- XEXP (return_rtx, i) = read_rtx_1 (infile, mode_maps);
+ XEXP (return_rtx, i) = read_nested_rtx (mode_maps);
break;
case 'V':
/* 'V' is an optional vector: if a closeparen follows,
just store NULL for this element. */
- c = read_skip_spaces (infile);
- ungetc (c, infile);
+ c = read_skip_spaces ();
+ unread_char (c);
if (c == ')')
{
XVEC (return_rtx, i) = 0;
int list_counter = 0;
rtvec return_vec = NULL_RTVEC;
- c = read_skip_spaces (infile);
+ c = read_skip_spaces ();
if (c != '[')
- fatal_expected_char (infile, '[', c);
+ fatal_expected_char ('[', c);
/* Add expressions to a list, while keeping a count. */
obstack_init (&vector_stack);
- while ((c = read_skip_spaces (infile)) && c != ']')
+ while ((c = read_skip_spaces ()) && c != ']')
{
- ungetc (c, infile);
+ if (c == EOF)
+ fatal_expected_char (']', c);
+ unread_char (c);
list_counter++;
- obstack_ptr_grow (&vector_stack, read_rtx_1 (infile, mode_maps));
+ obstack_ptr_grow (&vector_stack, read_nested_rtx (mode_maps));
}
if (list_counter > 0)
{
list_counter * sizeof (rtx));
}
else if (format_ptr[i] == 'E')
- fatal_with_file_and_line (infile,
- "vector must have at least one element");
+ fatal_with_file_and_line ("vector must have at least one element");
XVEC (return_rtx, i) = return_vec;
obstack_free (&vector_stack, NULL);
/* close bracket gotten */
char *stringbuf;
int star_if_braced;
- c = read_skip_spaces (infile);
- ungetc (c, infile);
+ c = read_skip_spaces ();
+ unread_char (c);
if (c == ')')
{
/* 'S' fields are optional and should be NULL if no string
written with a brace block instead of a string constant. */
star_if_braced = (format_ptr[i] == 'T');
- stringbuf = read_string (infile, star_if_braced);
+ stringbuf = read_string (star_if_braced);
/* For insn patterns, we want to provide a default name
based on the file and line, like "*foo.md:12", if the
|| GET_CODE (return_rtx) == DEFINE_INSN_AND_SPLIT))
{
char line_name[20];
- const char *fn = (read_rtx_filename ? read_rtx_filename : "rtx");
+ const char *fn = (read_md_filename ? read_md_filename : "rtx");
const char *slash;
for (slash = fn; *slash; slash ++)
if (*slash == '/' || *slash == '\\' || *slash == ':')
fn = slash + 1;
obstack_1grow (&string_obstack, '*');
obstack_grow (&string_obstack, fn, strlen (fn));
- sprintf (line_name, ":%d", read_rtx_lineno);
+ sprintf (line_name, ":%d", read_md_lineno);
obstack_grow (&string_obstack, line_name, strlen (line_name)+1);
- stringbuf = (char *) obstack_finish (&string_obstack);
+ stringbuf = XOBFINISH (&string_obstack, char *);
}
if (star_if_braced)
break;
case 'w':
- read_name (tmp_char, infile);
- validate_const_int (infile, tmp_char);
+ read_name (&name);
+ validate_const_int (name.string);
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
- tmp_wide = atoi (tmp_char);
+ tmp_wide = atoi (name.string);
#else
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
- tmp_wide = atol (tmp_char);
+ tmp_wide = atol (name.string);
#else
/* Prefer atoll over atoq, since the former is in the ISO C99 standard.
But prefer not to use our hand-rolled function above either. */
#if defined(HAVE_ATOLL) || !defined(HAVE_ATOQ)
- tmp_wide = atoll (tmp_char);
+ tmp_wide = atoll (name.string);
#else
- tmp_wide = atoq (tmp_char);
+ tmp_wide = atoq (name.string);
#endif
#endif
#endif
case 'i':
case 'n':
- read_name (tmp_char, infile);
- validate_const_int (infile, tmp_char);
- tmp_int = atoi (tmp_char);
+ read_name (&name);
+ validate_const_int (name.string);
+ tmp_int = atoi (name.string);
XINT (return_rtx, i) = tmp_int;
break;
gcc_unreachable ();
}
- c = read_skip_spaces (infile);
+ c = read_skip_spaces ();
+ /* Syntactic sugar for AND and IOR, allowing Lisp-like
+ arbitrary number of arguments for them. */
+ if (c == '('
+ && (GET_CODE (return_rtx) == AND
+ || GET_CODE (return_rtx) == IOR))
+ return read_rtx_variadic (mode_maps, return_rtx);
+
+ unread_char (c);
+ return return_rtx;
+}
+
+/* Read a nested rtx construct from the MD file and return it.
+ MODE_MAPS is as for iterator_traverse_data. */
+
+static rtx
+read_nested_rtx (struct map_value **mode_maps)
+{
+ struct md_name name;
+ int c;
+ rtx return_rtx;
+
+ c = read_skip_spaces ();
+ if (c != '(')
+ fatal_expected_char ('(', c);
+
+ read_name (&name);
+ if (strcmp (name.string, "nil") == 0)
+ return_rtx = NULL;
+ else
+ return_rtx = read_rtx_code (name.string, mode_maps);
+
+ c = read_skip_spaces ();
if (c != ')')
- fatal_expected_char (infile, ')', c);
+ fatal_expected_char (')', c);
return return_rtx;
}
+
+/* Mutually recursive subroutine of read_rtx which reads
+ (thing x1 x2 x3 ...) and produces RTL as if
+ (thing x1 (thing x2 (thing x3 ...))) had been written.
+ When called, FORM is (thing x1 x2), and the file position
+ is just past the leading parenthesis of x3. Only works
+ for THINGs which are dyadic expressions, e.g. AND, IOR. */
+static rtx
+read_rtx_variadic (struct map_value **mode_maps, rtx form)
+{
+ char c = '(';
+ rtx p = form, q;
+
+ do
+ {
+ unread_char (c);
+
+ q = rtx_alloc (GET_CODE (p));
+ PUT_MODE (q, GET_MODE (p));
+
+ XEXP (q, 0) = XEXP (p, 1);
+ XEXP (q, 1) = read_nested_rtx (mode_maps);
+
+ XEXP (p, 1) = q;
+ p = q;
+ c = read_skip_spaces ();
+ }
+ while (c == '(');
+ unread_char (c);
+ return form;
+}
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