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Diffstat (limited to 'gnu/usr.bin/gcc2/arch/genattr.c')
-rw-r--r--gnu/usr.bin/gcc2/arch/genattr.c436
1 files changed, 0 insertions, 436 deletions
diff --git a/gnu/usr.bin/gcc2/arch/genattr.c b/gnu/usr.bin/gcc2/arch/genattr.c
deleted file mode 100644
index 59c55754156..00000000000
--- a/gnu/usr.bin/gcc2/arch/genattr.c
+++ /dev/null
@@ -1,436 +0,0 @@
-/* Generate attribute information (insn-attr.h) from machine description.
- Copyright (C) 1991 Free Software Foundation, Inc.
- Contributed by Richard Kenner (kenner@nyu.edu)
-
-This file is part of GNU CC.
-
-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.
-
-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.
-
-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. */
-
-#ifndef lint
-static char rcsid[] = "$Id: genattr.c,v 1.1 1995/10/18 08:39:15 deraadt Exp $";
-#endif /* not lint */
-
-#include <stdio.h>
-#include "config.h"
-#include "rtl.h"
-#include "obstack.h"
-
-static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-
-extern void free PROTO((void *));
-extern int atoi PROTO((char *));
-extern rtx read_rtx PROTO((FILE *));
-
-char *xmalloc PROTO((unsigned));
-static void fatal ();
-void fancy_abort PROTO((void));
-
-/* A range of values. */
-
-struct range
-{
- int min;
- int max;
-};
-
-/* Record information about each function unit mentioned in a
- DEFINE_FUNCTION_UNIT. */
-
-struct function_unit
-{
- char *name; /* Function unit name. */
- struct function_unit *next; /* Next function unit. */
- int multiplicity; /* Number of units of this type. */
- int simultaneity; /* Maximum number of simultaneous insns
- on this function unit or 0 if unlimited. */
- struct range ready_cost; /* Range of ready cost values. */
- struct range issue_delay; /* Range of issue delay values. */
-};
-
-static void
-extend_range (range, min, max)
- struct range *range;
- int min;
- int max;
-{
- if (range->min > min) range->min = min;
- if (range->max < max) range->max = max;
-}
-
-static void
-init_range (range)
- struct range *range;
-{
- range->min = 100000;
- range->max = -1;
-}
-
-static void
-write_upcase (str)
- char *str;
-{
- for (; *str; str++)
- if (*str >= 'a' && *str <= 'z')
- printf ("%c", *str - 'a' + 'A');
- else
- printf ("%c", *str);
-}
-
-static void
-gen_attr (attr)
- rtx attr;
-{
- char *p;
-
- printf ("#define HAVE_ATTR_%s\n", XSTR (attr, 0));
-
- /* If numeric attribute, don't need to write an enum. */
- if (*XSTR (attr, 1) == '\0')
- printf ("extern int get_attr_%s ();\n", XSTR (attr, 0));
- else
- {
- printf ("enum attr_%s {", XSTR (attr, 0));
- write_upcase (XSTR (attr, 0));
- printf ("_");
-
- for (p = XSTR (attr, 1); *p != '\0'; p++)
- {
- if (*p == ',')
- {
- printf (", ");
- write_upcase (XSTR (attr, 0));
- printf ("_");
- }
- else if (*p >= 'a' && *p <= 'z')
- printf ("%c", *p - 'a' + 'A');
- else
- printf ("%c", *p);
- }
-
- printf ("};\n");
- printf ("extern enum attr_%s get_attr_%s ();\n\n",
- XSTR (attr, 0), XSTR (attr, 0));
- }
-
- /* If `length' attribute, write additional function definitions and define
- variables used by `insn_current_length'. */
- if (! strcmp (XSTR (attr, 0), "length"))
- {
- printf ("extern void init_lengths ();\n");
- printf ("extern void shorten_branches PROTO((rtx));\n");
- printf ("extern int insn_default_length PROTO((rtx));\n");
- printf ("extern int insn_variable_length_p PROTO((rtx));\n");
- printf ("extern int insn_current_length PROTO((rtx));\n\n");
- printf ("extern int *insn_addresses;\n");
- printf ("extern int insn_current_address;\n\n");
- }
-}
-
-static void
-write_units (num_units, multiplicity, simultaneity,
- ready_cost, issue_delay, blockage)
- int num_units;
- struct range *multiplicity;
- struct range *simultaneity;
- struct range *ready_cost;
- struct range *issue_delay;
- struct range *blockage;
-{
- int i, q_size;
-
- printf ("#define INSN_SCHEDULING\n\n");
- printf ("extern int result_ready_cost PROTO((rtx));\n");
- printf ("extern int function_units_used PROTO((rtx));\n\n");
- printf ("extern struct function_unit_desc\n");
- printf ("{\n");
- printf (" char *name;\n");
- printf (" int bitmask;\n");
- printf (" int multiplicity;\n");
- printf (" int simultaneity;\n");
- printf (" int default_cost;\n");
- printf (" int max_issue_delay;\n");
- printf (" int (*ready_cost_function) ();\n");
- printf (" int (*conflict_cost_function) ();\n");
- printf (" int max_blockage;\n");
- printf (" unsigned int (*blockage_range_function) ();\n");
- printf (" int (*blockage_function) ();\n");
- printf ("} function_units[];\n\n");
- printf ("#define FUNCTION_UNITS_SIZE %d\n", num_units);
- printf ("#define MIN_MULTIPLICITY %d\n", multiplicity->min);
- printf ("#define MAX_MULTIPLICITY %d\n", multiplicity->max);
- printf ("#define MIN_SIMULTANEITY %d\n", simultaneity->min);
- printf ("#define MAX_SIMULTANEITY %d\n", simultaneity->max);
- printf ("#define MIN_READY_COST %d\n", ready_cost->min);
- printf ("#define MAX_READY_COST %d\n", ready_cost->max);
- printf ("#define MIN_ISSUE_DELAY %d\n", issue_delay->min);
- printf ("#define MAX_ISSUE_DELAY %d\n", issue_delay->max);
- printf ("#define MIN_BLOCKAGE %d\n", blockage->min);
- printf ("#define MAX_BLOCKAGE %d\n", blockage->max);
- for (i = 0; (1 << i) < blockage->max; i++)
- ;
- printf ("#define BLOCKAGE_BITS %d\n", i + 1);
-
- /* INSN_QUEUE_SIZE is a power of two larger than MAX_BLOCKAGE and
- MAX_READY_COST. This is the longest time an isnsn may be queued. */
- i = MAX (blockage->max, ready_cost->max);
- for (q_size = 1; q_size <= i; q_size <<= 1)
- ;
- printf ("#define INSN_QUEUE_SIZE %d\n", q_size);
-}
-
-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, "genattr: ");
- fprintf (stderr, s, a1, a2);
- fprintf (stderr, "\n");
- exit (FATAL_EXIT_CODE);
-}
-
-/* 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.");
-}
-
-int
-main (argc, argv)
- int argc;
- char **argv;
-{
- rtx desc;
- FILE *infile;
- register int c;
- int have_delay = 0;
- int have_annul_true = 0;
- int have_annul_false = 0;
- int num_units = 0;
- struct range all_simultaneity, all_multiplicity;
- struct range all_ready_cost, all_issue_delay, all_blockage;
- struct function_unit *units = 0, *unit;
- int i;
-
- init_range (&all_multiplicity);
- init_range (&all_simultaneity);
- init_range (&all_ready_cost);
- init_range (&all_issue_delay);
- init_range (&all_blockage);
-
- obstack_init (rtl_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 `genattr'\n\
-from the machine description file `md'. */\n\n");
-
- /* For compatibility, define the attribute `alternative', which is just
- a reference to the variable `which_alternative'. */
-
- printf("#ifndef PROTO\n");
- printf("#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)\n");
- printf("#define PROTO(ARGS) ARGS\n");
- printf("#else\n");
- printf("#define PROTO(ARGS) ()\n");
- printf("#endif\n");
- printf("#endif\n");
-
- printf ("#define HAVE_ATTR_alternative\n");
- printf ("#define get_attr_alternative(insn) which_alternative\n");
-
- /* Read the machine description. */
-
- while (1)
- {
- c = read_skip_spaces (infile);
- if (c == EOF)
- break;
- ungetc (c, infile);
-
- desc = read_rtx (infile);
- if (GET_CODE (desc) == DEFINE_ATTR)
- gen_attr (desc);
-
- else if (GET_CODE (desc) == DEFINE_DELAY)
- {
- if (! have_delay)
- {
- printf ("#define DELAY_SLOTS\n");
- printf ("extern int num_delay_slots PROTO((rtx));\n");
- printf ("extern int eligible_for_delay PROTO((rtx, int, rtx, int));\n\n");
- printf ("extern int const_num_delay_slots PROTO((rtx));\n\n");
- have_delay = 1;
- }
-
- for (i = 0; i < XVECLEN (desc, 1); i += 3)
- {
- if (XVECEXP (desc, 1, i + 1) && ! have_annul_true)
- {
- printf ("#define ANNUL_IFTRUE_SLOTS\n");
- printf ("extern int eligible_for_annul_true ();\n");
- have_annul_true = 1;
- }
-
- if (XVECEXP (desc, 1, i + 2) && ! have_annul_false)
- {
- printf ("#define ANNUL_IFFALSE_SLOTS\n");
- printf ("extern int eligible_for_annul_false ();\n");
- have_annul_false = 1;
- }
- }
- }
-
- else if (GET_CODE (desc) == DEFINE_FUNCTION_UNIT)
- {
- char *name = XSTR (desc, 0);
- int multiplicity = XINT (desc, 1);
- int simultaneity = XINT (desc, 2);
- int ready_cost = MAX (XINT (desc, 4), 1);
- int issue_delay = MAX (XINT (desc, 5), 1);
- int issueexp_p = (XVEC (desc, 6) != 0);
-
- for (unit = units; unit; unit = unit->next)
- if (strcmp (unit->name, name) == 0)
- break;
-
- if (unit == 0)
- {
- int len = strlen (name) + 1;
- unit = (struct function_unit *)
- alloca (sizeof (struct function_unit));
- unit->name = (char *) alloca (len);
- bcopy (name, unit->name, len);
- unit->multiplicity = multiplicity;
- unit->simultaneity = simultaneity;
- unit->ready_cost.min = unit->ready_cost.max = ready_cost;
- unit->issue_delay.min = unit->issue_delay.max = issue_delay;
- unit->next = units;
- units = unit;
- num_units++;
-
- extend_range (&all_multiplicity, multiplicity, multiplicity);
- extend_range (&all_simultaneity, simultaneity, simultaneity);
- }
- else if (unit->multiplicity != multiplicity
- || unit->simultaneity != simultaneity)
- fatal ("Differing specifications given for `%s' function unit.",
- unit->name);
-
- extend_range (&unit->ready_cost, ready_cost, ready_cost);
- extend_range (&unit->issue_delay,
- issueexp_p ? 1 : issue_delay, issue_delay);
- extend_range (&all_ready_cost,
- unit->ready_cost.min, unit->ready_cost.max);
- extend_range (&all_issue_delay,
- unit->issue_delay.min, unit->issue_delay.max);
- }
- }
-
- if (num_units > 0)
- {
- /* Compute the range of blockage cost values. See genattrtab.c
- for the derivation. BLOCKAGE (E,C) when SIMULTANEITY is zero is
-
- MAX (ISSUE-DELAY (E,C),
- READY-COST (E) - (READY-COST (C) - 1))
-
- and otherwise
-
- MAX (ISSUE-DELAY (E,C),
- READY-COST (E) - (READY-COST (C) - 1),
- READY-COST (E) - FILL-TIME) */
-
- for (unit = units; unit; unit = unit->next)
- {
- struct range blockage;
- int max_issue_time = MAX (unit->issue_delay.max, 1);
-
- blockage = unit->issue_delay;
- blockage.max = MAX (unit->ready_cost.max
- - (unit->ready_cost.min - 1),
- blockage.max);
- blockage.min = MAX (1, blockage.min);
-
- if (unit->simultaneity != 0)
- {
- int fill_time = ((unit->simultaneity - 1)
- * unit->issue_delay.min);
- blockage.min = MAX (unit->ready_cost.min - fill_time,
- blockage.min);
- blockage.max = MAX (unit->ready_cost.max - fill_time,
- blockage.max);
- }
- extend_range (&all_blockage, blockage.min, blockage.max);
- }
-
- write_units (num_units, &all_multiplicity, &all_simultaneity,
- &all_ready_cost, &all_issue_delay, &all_blockage);
- }
-
- /* Output flag masks for use by reorg.
-
- Flags are used to hold branch direction and prediction information
- for use by eligible_for_... */
- printf("\n#define ATTR_FLAG_forward\t0x1\n");
- printf("#define ATTR_FLAG_backward\t0x2\n");
- printf("#define ATTR_FLAG_likely\t0x4\n");
- printf("#define ATTR_FLAG_very_likely\t0x8\n");
- printf("#define ATTR_FLAG_unlikely\t0x10\n");
- printf("#define ATTR_FLAG_very_unlikely\t0x20\n");
-
- fflush (stdout);
- exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
- /* NOTREACHED */
- return 0;
-}
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