X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fgenflags.c;h=b2c878d0594219c7753c1532c2c5ada4d6fad6fb;hb=5d2fc50913d8f07dac579d636b6b46040df073f1;hp=edb54436b77ab453f04a146d76152b0887942326;hpb=a94aa17d34efa9198e19f444335f455f21f0620b;p=pf3gnuchains%2Fgcc-fork.git
diff --git a/gcc/genflags.c b/gcc/genflags.c
index edb54436b77..b2c878d0594 100644
--- a/gcc/genflags.c
+++ b/gcc/genflags.c
@@ -1,160 +1,280 @@
/* Generate from machine description:
-
- some flags HAVE_... saying which simple standard instructions are
available for this machine.
- Copyright (C) 1987, 1991 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with GCC; see the file COPYING3. If not see
+. */
-#include
-#include "config.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
+/* Max size of names encountered. */
+static int max_id_len;
+
+/* Max operand encountered in a scan over some insn. */
+static int max_opno;
-extern void free ();
-extern rtx read_rtx ();
+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);
-char *xmalloc ();
-static void fatal ();
-void fancy_abort ();
+/* Count the number of match_operand's found. */
static void
-gen_insn (insn)
- rtx insn;
+max_operand_1 (rtx x)
{
- char *p;
+ RTX_CODE code;
+ int i;
+ int len;
+ const char *fmt;
- /* Don't mention instructions whose names are the null string.
- They are in the machine description just to be recognized. */
- if (strlen (XSTR (insn, 0)) == 0)
+ if (x == 0)
return;
- printf ("#define HAVE_%s ", XSTR (insn, 0));
- if (strlen (XSTR (insn, 2)) == 0)
- printf ("1\n");
- else
+ code = GET_CODE (x);
+
+ if (code == MATCH_OPERAND || code == MATCH_OPERATOR
+ || code == MATCH_PARALLEL)
+ max_opno = MAX (max_opno, XINT (x, 0));
+
+ fmt = GET_RTX_FORMAT (code);
+ len = GET_RTX_LENGTH (code);
+ for (i = 0; i < len; i++)
{
- /* Write the macro definition, putting \'s at the end of each line,
- if more than one. */
- printf ("(");
- for (p = XSTR (insn, 2); *p; p++)
+ if (fmt[i] == 'e' || fmt[i] == 'u')
+ max_operand_1 (XEXP (x, i));
+ else if (fmt[i] == 'E')
{
- if (*p == '\n')
- printf (" \\\n");
- else
- printf ("%c", *p);
+ int j;
+ for (j = 0; j < XVECLEN (x, i); j++)
+ max_operand_1 (XVECEXP (x, i, j));
}
- printf (")\n");
}
-
- printf ("extern rtx gen_%s ();\n", XSTR (insn, 0));
}
-
-char *
-xmalloc (size)
- unsigned size;
+
+static int
+num_operands (rtx insn)
{
- register char *val = (char *) malloc (size);
+ int len = XVECLEN (insn, 1);
+ int i;
- if (val == 0)
- fatal ("virtual memory exhausted");
+ max_opno = -1;
- return val;
-}
+ for (i = 0; i < len; i++)
+ max_operand_1 (XVECEXP (insn, 1, i));
-char *
-xrealloc (ptr, size)
- char *ptr;
- unsigned size;
-{
- char *result = (char *) realloc (ptr, size);
- if (!result)
- fatal ("virtual memory exhausted");
- return result;
+ 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
-fatal (s, a1, a2)
- char *s;
+gen_macro (const char *name, int real, int expect)
{
- fprintf (stderr, "genflags: ");
- fprintf (stderr, s, a1, a2);
- fprintf (stderr, "\n");
- exit (FATAL_EXIT_CODE);
+ 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');
}
-/* More 'friendly' abort that prints the line and file.
- config.h can #define abort fancy_abort if you like that sort of thing. */
+/* Print out prototype information for a generator function. If the
+ insn pattern has been elided, print out a dummy generator that
+ does nothing. */
-void
-fancy_abort ()
+static void
+gen_proto (rtx insn)
{
- fatal ("Internal gcc abort.");
+ int num = num_operands (insn);
+ 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)
+ fputs ("void", stdout);
+ else
+ {
+ for (i = 1; i < num; i++)
+ fputs ("rtx, ", stdout);
+
+ fputs ("rtx", stdout);
+ }
+
+ puts (");");
+
+ /* 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}");
+ }
+
}
-
-int
-main (argc, argv)
- int argc;
- char **argv;
+
+static void
+gen_insn (rtx insn)
{
- rtx desc;
- FILE *infile;
- register int c;
+ const char *name = XSTR (insn, 0);
+ const char *p;
+ int len;
+ int truth = maybe_eval_c_test (XSTR (insn, 2));
- obstack_init (rtl_obstack);
+ /* Don't mention instructions whose names are the null string
+ or begin with '*'. They are in the machine description just
+ to be recognized. */
+ if (name[0] == 0 || name[0] == '*')
+ return;
- if (argc <= 1)
- fatal ("No input file name.");
+ len = strlen (name);
- infile = fopen (argv[1], "r");
- if (infile == 0)
+ if (len > max_id_len)
+ max_id_len = len;
+
+ if (truth == 0)
+ /* Emit nothing. */;
+ else if (truth == 1)
+ printf ("#define HAVE_%s 1\n", name);
+ else
{
- perror (argv[1]);
- exit (FATAL_EXIT_CODE);
+ /* Write the macro definition, putting \'s at the end of each line,
+ if more than one. */
+ printf ("#define HAVE_%s (", name);
+ for (p = XSTR (insn, 2); *p; p++)
+ {
+ if (IS_VSPACE (*p))
+ fputs (" \\\n", stdout);
+ else
+ putchar (*p);
+ }
+ fputs (")\n", stdout);
}
- init_rtl ();
+ obstack_grow (&obstack, &insn, sizeof (rtx));
+}
+
+int
+main (int argc, char **argv)
+{
+ rtx desc;
+ rtx dummy;
+ rtx *insns;
+ rtx *insn_ptr;
+
+ progname = "genflags";
+ obstack_init (&obstack);
+
+ /* We need to see all the possibilities. Elided insns may have
+ direct calls to their generators in C code. */
+ insn_elision = 0;
- printf ("/* Generated automatically by the program `genflags'\n\
-from the machine description file `md'. */\n\n");
+ if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
+ return (FATAL_EXIT_CODE);
+
+ 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);
}
- fflush (stdout);
- exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
- /* NOTREACHED */
- return 0;
+ /* Print out the prototypes now. */
+ dummy = (rtx) 0;
+ obstack_grow (&obstack, &dummy, sizeof (rtx));
+ insns = XOBFINISH (&obstack, rtx *);
+
+ for (insn_ptr = insns; *insn_ptr; insn_ptr++)
+ gen_proto (*insn_ptr);
+
+ puts("\n#endif /* GCC_INSN_FLAGS_H */");
+
+ if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+ return FATAL_EXIT_CODE;
+
+ return SUCCESS_EXIT_CODE;
}