#include "bconfig.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "rtl.h"
#include "obstack.h"
#include "errors.h"
#include "gensupport.h"
static struct obstack obstack;
static int max_id_len;
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);
static void
max_operand_1 (rtx x)
{
RTX_CODE code;
int i;
int len;
const char *fmt;
if (x == 0)
return;
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++)
{
if (fmt[i] == 'e' || fmt[i] == 'u')
max_operand_1 (XEXP (x, i));
else if (fmt[i] == 'E')
{
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;
max_opno = -1;
for (i = 0; i < len; i++)
max_operand_1 (XVECEXP (insn, 1, i));
return max_opno + 1;
}
static void
gen_macro (const char *name, int real, int expect)
{
int i;
gcc_assert (real <= expect);
gcc_assert (real);
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');
}
static void
gen_proto (rtx insn)
{
int num = num_operands (insn);
int i;
const char *name = XSTR (insn, 0);
int truth = maybe_eval_c_test (XSTR (insn, 2));
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 (");");
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_insn (rtx insn)
{
const char *name = XSTR (insn, 0);
const char *p;
int len;
int truth = maybe_eval_c_test (XSTR (insn, 2));
if (name[0] == 0 || name[0] == '*')
return;
len = strlen (name);
if (len > max_id_len)
max_id_len = len;
if (truth == 0)
;
else if (truth == 1)
printf ("#define HAVE_%s 1\n", name);
else
{
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);
}
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);
insn_elision = 0;
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");
while (1)
{
int line_no, insn_code_number = 0;
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);
}
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;
}