/* Generate from machine description:
-
- some flags HAVE_... saying which simple standard instructions are
available for this machine.
- Copyright (C) 1987, 1991, 1995, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1995, 1998, 1999, 2000, 2003, 2004, 2007
+ Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC 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.
+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 3, or (at your option) any later
+version.
-GNU CC 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.
+GCC 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 GNU CC; 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 "hconfig.h"
+#include "bconfig.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
#include "obstack.h"
+#include "errors.h"
+#include "gensupport.h"
+/* Obstack to remember insns with. */
static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-
-static void fatal PVPROTO ((const char *, ...))
- ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
-void fancy_abort PROTO((void)) ATTRIBUTE_NORETURN;
-
-/* Names for patterns. Need to allow linking with print-rtl. */
-char **insn_name_ptr;
-
-/* Obstacks to remember normal, and call insns. */
-static struct obstack call_obstack, normal_obstack;
/* Max size of names encountered. */
static int max_id_len;
-static int num_operands PROTO((rtx));
-static void gen_proto PROTO((rtx));
-static void gen_nonproto PROTO((rtx));
-static void gen_insn PROTO((rtx));
+/* Max operand encountered in a scan over some insn. */
+static int max_opno;
+static void max_operand_1 (rtx);
+static int num_operands (rtx);
+static void gen_proto (rtx);
+static void gen_macro (const char *, int, int);
+static void gen_insn (rtx);
/* Count the number of match_operand's found. */
-static int
-num_operands (x)
- rtx x;
+static void
+max_operand_1 (rtx x)
{
- int count = 0;
- int i, j;
- enum rtx_code code = GET_CODE (x);
- char *format_ptr = GET_RTX_FORMAT (code);
+ RTX_CODE code;
+ int i;
+ int len;
+ const char *fmt;
- if (code == MATCH_OPERAND)
- return 1;
+ if (x == 0)
+ return;
+
+ code = GET_CODE (x);
- if (code == MATCH_OPERATOR || code == MATCH_PARALLEL)
- count++;
+ if (code == MATCH_OPERAND || code == MATCH_OPERATOR
+ || code == MATCH_PARALLEL)
+ max_opno = MAX (max_opno, XINT (x, 0));
- for (i = 0; i < GET_RTX_LENGTH (code); i++)
+ fmt = GET_RTX_FORMAT (code);
+ len = GET_RTX_LENGTH (code);
+ for (i = 0; i < len; i++)
{
- switch (*format_ptr++)
+ if (fmt[i] == 'e' || fmt[i] == 'u')
+ max_operand_1 (XEXP (x, i));
+ else if (fmt[i] == 'E')
{
- case 'u':
- case 'e':
- count += num_operands (XEXP (x, i));
- break;
-
- case 'E':
- if (XVEC (x, i) != NULL)
- for (j = 0; j < XVECLEN (x, i); j++)
- count += num_operands (XVECEXP (x, i, j));
-
- break;
+ int j;
+ for (j = 0; j < XVECLEN (x, i); j++)
+ max_operand_1 (XVECEXP (x, i, j));
}
}
+}
+
+static int
+num_operands (rtx insn)
+{
+ int len = XVECLEN (insn, 1);
+ int i;
- return count;
+ max_opno = -1;
+
+ for (i = 0; i < len; i++)
+ max_operand_1 (XVECEXP (insn, 1, i));
+
+ return max_opno + 1;
+}
+
+/* Print out a wrapper macro for a function which corrects the number
+ of arguments it takes. Any missing arguments are assumed to be at
+ the end. */
+static void
+gen_macro (const char *name, int real, int expect)
+{
+ int i;
+
+ gcc_assert (real <= expect);
+ gcc_assert (real);
+
+ /* #define GEN_CALL(A, B, C, D) gen_call((A), (B)) */
+ fputs ("#define GEN_", stdout);
+ for (i = 0; name[i]; i++)
+ putchar (TOUPPER (name[i]));
+
+ putchar('(');
+ for (i = 0; i < expect - 1; i++)
+ printf ("%c, ", i + 'A');
+ printf ("%c) gen_%s (", i + 'A', name);
+
+ for (i = 0; i < real - 1; i++)
+ printf ("(%c), ", i + 'A');
+ printf ("(%c))\n", i + 'A');
}
-/* Print out prototype information for a function. */
+/* Print out prototype information for a generator function. If the
+ insn pattern has been elided, print out a dummy generator that
+ does nothing. */
static void
-gen_proto (insn)
- rtx insn;
+gen_proto (rtx insn)
{
int num = num_operands (insn);
- printf ("extern rtx gen_%-*s PROTO((", max_id_len, XSTR (insn, 0));
+ int i;
+ const char *name = XSTR (insn, 0);
+ int truth = maybe_eval_c_test (XSTR (insn, 2));
+
+ /* Many md files don't refer to the last two operands passed to the
+ call patterns. This means their generator functions will be two
+ arguments too short. Instead of changing every md file to touch
+ those operands, we wrap the prototypes in macros that take the
+ correct number of arguments. */
+ if (name[0] == 'c' || name[0] == 's')
+ {
+ if (!strcmp (name, "call")
+ || !strcmp (name, "call_pop")
+ || !strcmp (name, "sibcall")
+ || !strcmp (name, "sibcall_pop"))
+ gen_macro (name, num, 4);
+ else if (!strcmp (name, "call_value")
+ || !strcmp (name, "call_value_pop")
+ || !strcmp (name, "sibcall_value")
+ || !strcmp (name, "sibcall_value_pop"))
+ gen_macro (name, num, 5);
+ }
+
+ if (truth != 0)
+ printf ("extern rtx gen_%-*s (", max_id_len, name);
+ else
+ printf ("static inline rtx gen_%-*s (", max_id_len, name);
if (num == 0)
- printf ("void");
+ fputs ("void", stdout);
else
{
- while (num-- > 1)
- printf ("rtx, ");
+ for (i = 1; i < num; i++)
+ fputs ("rtx, ", stdout);
- printf ("rtx");
+ fputs ("rtx", stdout);
}
- printf ("));\n");
-}
+ puts (");");
-/* Print out a function declaration without a prototype. */
+ /* Some back ends want to take the address of generator functions,
+ so we cannot simply use #define for these dummy definitions. */
+ if (truth == 0)
+ {
+ printf ("static inline rtx\ngen_%s", name);
+ if (num > 0)
+ {
+ putchar ('(');
+ for (i = 0; i < num-1; i++)
+ printf ("rtx ARG_UNUSED (%c), ", 'a' + i);
+ printf ("rtx ARG_UNUSED (%c))\n", 'a' + i);
+ }
+ else
+ puts ("(void)");
+ puts ("{\n return 0;\n}");
+ }
-static void
-gen_nonproto (insn)
- rtx insn;
-{
- printf ("extern rtx gen_%s ();\n", XSTR (insn, 0));
}
static void
-gen_insn (insn)
- rtx insn;
+gen_insn (rtx insn)
{
- char *name = XSTR (insn, 0);
- char *p;
- struct obstack *obstack_ptr;
+ const char *name = XSTR (insn, 0);
+ const char *p;
int len;
+ int truth = maybe_eval_c_test (XSTR (insn, 2));
/* Don't mention instructions whose names are the null string
or begin with '*'. They are in the machine description just
if (len > max_id_len)
max_id_len = len;
- printf ("#define HAVE_%s ", name);
- if (strlen (XSTR (insn, 2)) == 0)
- printf ("1\n");
+ if (truth == 0)
+ /* Emit nothing. */;
+ else if (truth == 1)
+ printf ("#define HAVE_%s 1\n", name);
else
{
/* Write the macro definition, putting \'s at the end of each line,
if more than one. */
- printf ("(");
+ printf ("#define HAVE_%s (", name);
for (p = XSTR (insn, 2); *p; p++)
{
- if (*p == '\n')
- printf (" \\\n");
+ if (IS_VSPACE (*p))
+ fputs (" \\\n", stdout);
else
- printf ("%c", *p);
+ putchar (*p);
}
- printf (")\n");
+ fputs (")\n", stdout);
}
- /* Save the current insn, so that we can later put out appropriate
- prototypes. At present, most md files have the wrong number of
- arguments for the call insns (call, call_value, call_pop,
- call_value_pop) ignoring the extra arguments that are passed for
- some machines, so by default, turn off the prototype. */
-
- obstack_ptr = (name[0] == 'c'
- && (!strcmp (name, "call")
- || !strcmp (name, "call_value")
- || !strcmp (name, "call_pop")
- || !strcmp (name, "call_value_pop")))
- ? &call_obstack : &normal_obstack;
-
- obstack_grow (obstack_ptr, &insn, sizeof (rtx));
-}
-\f
-PTR
-xmalloc (size)
- size_t size;
-{
- register PTR val = (PTR) malloc (size);
-
- if (val == 0)
- fatal ("virtual memory exhausted");
-
- return val;
-}
-
-PTR
-xrealloc (old, size)
- PTR old;
- size_t size;
-{
- register PTR ptr;
- if (ptr)
- ptr = (PTR) realloc (old, size);
- else
- ptr = (PTR) malloc (size);
- if (!ptr)
- fatal ("virtual memory exhausted");
- return ptr;
-}
-
-static void
-fatal VPROTO ((const char *format, ...))
-{
-#ifndef ANSI_PROTOTYPES
- const char *format;
-#endif
- va_list ap;
-
- VA_START (ap, format);
-
-#ifndef ANSI_PROTOTYPES
- format = va_arg (ap, const char *);
-#endif
-
- fprintf (stderr, "genflags: ");
- vfprintf (stderr, format, ap);
- va_end (ap);
- fprintf (stderr, "\n");
- exit (FATAL_EXIT_CODE);
+ obstack_grow (&obstack, &insn, sizeof (rtx));
}
-/* More 'friendly' abort that prints the line and file.
- config.h can #define abort fancy_abort if you like that sort of thing. */
-
-void
-fancy_abort ()
-{
- fatal ("Internal gcc abort.");
-}
-\f
int
-main (argc, argv)
- int argc;
- char **argv;
+main (int argc, char **argv)
{
rtx desc;
rtx dummy;
- rtx *call_insns;
- rtx *normal_insns;
+ rtx *insns;
rtx *insn_ptr;
- FILE *infile;
- register int c;
- obstack_init (rtl_obstack);
- obstack_init (&call_obstack);
- obstack_init (&normal_obstack);
+ progname = "genflags";
+ obstack_init (&obstack);
- if (argc <= 1)
- fatal ("No input file name.");
-
- infile = fopen (argv[1], "r");
- if (infile == 0)
- {
- perror (argv[1]);
- exit (FATAL_EXIT_CODE);
- }
+ /* We need to see all the possibilities. Elided insns may have
+ direct calls to their generators in C code. */
+ insn_elision = 0;
- init_rtl ();
+ if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
+ return (FATAL_EXIT_CODE);
- printf ("/* Generated automatically by the program `genflags'\n\
-from the machine description file `md'. */\n\n");
+ puts ("/* Generated automatically by the program `genflags'");
+ puts (" from the machine description file `md'. */\n");
+ puts ("#ifndef GCC_INSN_FLAGS_H");
+ puts ("#define GCC_INSN_FLAGS_H\n");
/* Read the machine description. */
while (1)
{
- c = read_skip_spaces (infile);
- if (c == EOF)
- break;
- ungetc (c, infile);
+ int line_no, insn_code_number = 0;
- desc = read_rtx (infile);
+ desc = read_md_rtx (&line_no, &insn_code_number);
+ if (desc == NULL)
+ break;
if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
gen_insn (desc);
}
/* Print out the prototypes now. */
dummy = (rtx) 0;
- obstack_grow (&call_obstack, &dummy, sizeof (rtx));
- call_insns = (rtx *) obstack_finish (&call_obstack);
-
- obstack_grow (&normal_obstack, &dummy, sizeof (rtx));
- normal_insns = (rtx *) obstack_finish (&normal_obstack);
+ obstack_grow (&obstack, &dummy, sizeof (rtx));
+ insns = XOBFINISH (&obstack, rtx *);
- printf ("\n#ifndef NO_MD_PROTOTYPES\n");
- for (insn_ptr = normal_insns; *insn_ptr; insn_ptr++)
+ for (insn_ptr = insns; *insn_ptr; insn_ptr++)
gen_proto (*insn_ptr);
- printf ("\n#ifdef MD_CALL_PROTOTYPES\n");
- for (insn_ptr = call_insns; *insn_ptr; insn_ptr++)
- gen_proto (*insn_ptr);
-
- printf ("\n#else /* !MD_CALL_PROTOTYPES */\n");
- for (insn_ptr = call_insns; *insn_ptr; insn_ptr++)
- gen_nonproto (*insn_ptr);
-
- printf ("#endif /* !MD_CALL_PROTOTYPES */\n");
- printf ("\n#else /* NO_MD_PROTOTYPES */\n");
- for (insn_ptr = normal_insns; *insn_ptr; insn_ptr++)
- gen_nonproto (*insn_ptr);
-
- for (insn_ptr = call_insns; *insn_ptr; insn_ptr++)
- gen_nonproto (*insn_ptr);
+ puts("\n#endif /* GCC_INSN_FLAGS_H */");
- printf ("#endif /* NO_MD_PROTOTYPES */\n");
+ if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+ return FATAL_EXIT_CODE;
- fflush (stdout);
- exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
- /* NOTREACHED */
- return 0;
+ return SUCCESS_EXIT_CODE;
}
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