/* 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 Free Software Foundation, Inc.
This file is part of GNU CC.
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. */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
-#include <stdio.h>
-#include "config.h"
+#include "hconfig.h"
+#include "system.h"
#include "rtl.h"
#include "obstack.h"
+#include "errors.h"
+#include "gensupport.h"
-static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
-extern void free ();
-extern rtx read_rtx ();
-
-char *xmalloc ();
-static void fatal ();
-void fancy_abort ();
-
-/* 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;
+/* Obstack to remember insns with. */
+static struct obstack obstack;
/* Max size of names encountered. */
static int max_id_len;
+/* Max operand encountered in a scan over some insn. */
+static int max_opno;
+
+static void max_operand_1 PARAMS ((rtx));
+static int num_operands PARAMS ((rtx));
+static void gen_proto PARAMS ((rtx));
+static void gen_macro PARAMS ((const char *, int, int));
+static void gen_insn PARAMS ((rtx));
+
/* Count the number of match_operand's found. */
-static int
-num_operands (x)
+
+static void
+max_operand_1 (x)
rtx x;
{
- int count = 0;
- int i, j;
- enum rtx_code code = GET_CODE (x);
- char *format_ptr = GET_RTX_FORMAT (code);
+ register RTX_CODE code;
+ register int i;
+ register int len;
+ register const char *fmt;
+
+ if (x == 0)
+ return;
- if (code == MATCH_OPERAND)
- return 1;
+ code = GET_CODE (x);
- if (code == MATCH_OPERATOR)
- 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));
}
}
+}
- return count;
+static int
+num_operands (insn)
+ rtx insn;
+{
+ register int len = XVECLEN (insn, 1);
+ register int i;
+
+ 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 (name, real, expect)
+ const char *name;
+ int real, expect;
+{
+ int i;
+
+ if (real > expect)
+ abort ();
+ if (real == 0)
+ abort ();
+
+ /* #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. */
+
static void
gen_proto (insn)
rtx insn;
{
int num = num_operands (insn);
- printf ("extern rtx gen_%-*s PROTO((", max_id_len, XSTR (insn, 0));
+ const char *name = XSTR (insn, 0);
+
+ /* 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);
+ }
+
+ printf ("extern struct rtx_def *gen_%-*s PARAMS ((", max_id_len, name);
if (num == 0)
printf ("void");
else
{
while (num-- > 1)
- printf ("rtx, ");
+ printf ("struct rtx_def *, ");
- printf ("rtx");
+ printf ("struct rtx_def *");
}
printf ("));\n");
-}
-/* Print out a function declaration without a prototype. */
-static void
-gen_nonproto (insn)
- rtx insn;
-{
- printf ("extern rtx gen_%s ();\n", XSTR (insn, 0));
}
static void
gen_insn (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;
- /* Don't mention instructions whose names are the null string.
- They are in the machine description just to be recognized. */
- len = strlen (name);
- if (len == 0)
+ /* 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;
+ len = strlen (name);
+
if (len > max_id_len)
max_id_len = len;
printf (")\n");
}
- /* 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
-char *
-xmalloc (size)
- unsigned size;
-{
- register char *val = (char *) malloc (size);
-
- if (val == 0)
- fatal ("virtual memory exhausted");
-
- return val;
-}
-
-char *
-xrealloc (ptr, size)
- char *ptr;
- unsigned size;
-{
- char *result = (char *) realloc (ptr, size);
- if (!result)
- fatal ("virtual memory exhausted");
- return result;
-}
-
-static void
-fatal (s, a1, a2)
- char *s;
-{
- fprintf (stderr, "genflags: ");
- fprintf (stderr, s, a1, a2);
- 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. */
+extern int main PARAMS ((int, char **));
-void
-fancy_abort ()
-{
- fatal ("Internal gcc abort.");
-}
-\f
int
main (argc, argv)
int argc;
{
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);
- }
-
- init_rtl ();
-
- printf ("/* Generated automatically by the program `genflags'\n\
-from the machine description file `md'. */\n\n");
+ if (init_md_reader (argv[1]) != 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);
}
/* 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);
-
- printf ("\n#ifndef NO_MD_PROTOTYPES\n");
- for (insn_ptr = normal_insns; *insn_ptr; insn_ptr++)
- gen_proto (*insn_ptr);
+ dummy = (rtx) 0;
+ obstack_grow (&obstack, &dummy, sizeof (rtx));
+ insns = (rtx *) obstack_finish (&obstack);
- printf ("\n#ifdef MD_CALL_PROTOTYPES\n");
- for (insn_ptr = call_insns; *insn_ptr; insn_ptr++)
+ printf ("struct rtx_def;\n");
+ for (insn_ptr = 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);
+ puts("\n#endif /* GCC_INSN_FLAGS_H */");
- for (insn_ptr = call_insns; *insn_ptr; insn_ptr++)
- gen_nonproto (*insn_ptr);
+ if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+ return FATAL_EXIT_CODE;
- printf ("#endif /* NO_MD_PROTOTYPES */\n");
+ return SUCCESS_EXIT_CODE;
+}
- fflush (stdout);
- exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
- /* NOTREACHED */
- return 0;
+/* Define this so we can link with print-rtl.o to get debug_rtx function. */
+const char *
+get_insn_name (code)
+ int code ATTRIBUTE_UNUSED;
+{
+ return NULL;
}
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