#include "hconfig.h"
#include "system.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
void fatal PVPROTO ((const char *, ...))
ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
void fancy_abort PROTO((void)) ATTRIBUTE_NORETURN;
char **insn_name_ptr = 0;
struct range
{
int min;
int max;
};
struct function_unit
{
char *name;
struct function_unit *next;
int multiplicity;
int simultaneity;
struct range ready_cost;
struct range issue_delay;
};
static void extend_range PROTO((struct range *, int, int));
static void init_range PROTO((struct range *));
static void write_upcase PROTO((char *));
static void gen_attr PROTO((rtx));
static void write_units PROTO((int, struct range *, struct range *,
struct range *, struct range *,
struct range *));
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 (*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 (! 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);
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);
}
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 (old)
ptr = (PTR) realloc (old, size);
else
ptr = (PTR) malloc (size);
if (!ptr)
fatal ("virtual memory exhausted");
return ptr;
}
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, "genattr: ");
vfprintf (stderr, format, ap);
va_end (ap);
fprintf (stderr, "\n");
exit (FATAL_EXIT_CODE);
}
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");
printf ("#define HAVE_ATTR_alternative\n");
printf ("#define get_attr_alternative(insn) which_alternative\n");
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)
{
for (unit = units; unit; unit = unit->next)
{
struct range blockage;
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);
}
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);
return 0;
}