/* Generate from machine description:
|
/* Generate from machine description:
|
- some flags HAVE_... saying which simple standard instructions are
|
- some flags HAVE_... saying which simple standard instructions are
|
available for this machine.
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available for this machine.
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Copyright (C) 1987, 1991, 1995, 1998, 1999, 2000, 2003, 2004, 2007
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Copyright (C) 1987, 1991, 1995, 1998, 1999, 2000, 2003, 2004, 2007
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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|
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This file is part of GCC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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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
|
the terms of the GNU General Public License as published by the Free
|
Software Foundation; either version 3, or (at your option) any later
|
Software Foundation; either version 3, or (at your option) any later
|
version.
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version.
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|
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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for more details.
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|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with GCC; see the file COPYING3. If not see
|
along with GCC; see the file COPYING3. If not see
|
<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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|
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#include "bconfig.h"
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#include "bconfig.h"
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#include "system.h"
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#include "system.h"
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#include "coretypes.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "tm.h"
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#include "rtl.h"
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#include "rtl.h"
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#include "obstack.h"
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#include "obstack.h"
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#include "errors.h"
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#include "errors.h"
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#include "gensupport.h"
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#include "gensupport.h"
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/* Obstack to remember insns with. */
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/* Obstack to remember insns with. */
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static struct obstack obstack;
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static struct obstack obstack;
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/* Max size of names encountered. */
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/* Max size of names encountered. */
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static int max_id_len;
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static int max_id_len;
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/* Max operand encountered in a scan over some insn. */
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/* Max operand encountered in a scan over some insn. */
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static int max_opno;
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static int max_opno;
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static void max_operand_1 (rtx);
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static void max_operand_1 (rtx);
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static int num_operands (rtx);
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static int num_operands (rtx);
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static void gen_proto (rtx);
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static void gen_proto (rtx);
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static void gen_macro (const char *, int, int);
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static void gen_macro (const char *, int, int);
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static void gen_insn (rtx);
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static void gen_insn (rtx);
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/* Count the number of match_operand's found. */
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/* Count the number of match_operand's found. */
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|
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static void
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static void
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max_operand_1 (rtx x)
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max_operand_1 (rtx x)
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{
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{
|
RTX_CODE code;
|
RTX_CODE code;
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int i;
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int i;
|
int len;
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int len;
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const char *fmt;
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const char *fmt;
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|
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if (x == 0)
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if (x == 0)
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return;
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return;
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|
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code = GET_CODE (x);
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code = GET_CODE (x);
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if (code == MATCH_OPERAND || code == MATCH_OPERATOR
|
if (code == MATCH_OPERAND || code == MATCH_OPERATOR
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|| code == MATCH_PARALLEL)
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|| code == MATCH_PARALLEL)
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max_opno = MAX (max_opno, XINT (x, 0));
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max_opno = MAX (max_opno, XINT (x, 0));
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fmt = GET_RTX_FORMAT (code);
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fmt = GET_RTX_FORMAT (code);
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len = GET_RTX_LENGTH (code);
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len = GET_RTX_LENGTH (code);
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for (i = 0; i < len; i++)
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for (i = 0; i < len; i++)
|
{
|
{
|
if (fmt[i] == 'e' || fmt[i] == 'u')
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if (fmt[i] == 'e' || fmt[i] == 'u')
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max_operand_1 (XEXP (x, i));
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max_operand_1 (XEXP (x, i));
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else if (fmt[i] == 'E')
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else if (fmt[i] == 'E')
|
{
|
{
|
int j;
|
int j;
|
for (j = 0; j < XVECLEN (x, i); j++)
|
for (j = 0; j < XVECLEN (x, i); j++)
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max_operand_1 (XVECEXP (x, i, j));
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max_operand_1 (XVECEXP (x, i, j));
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}
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}
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}
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}
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}
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}
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static int
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static int
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num_operands (rtx insn)
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num_operands (rtx insn)
|
{
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{
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int len = XVECLEN (insn, 1);
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int len = XVECLEN (insn, 1);
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int i;
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int i;
|
|
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max_opno = -1;
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max_opno = -1;
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|
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for (i = 0; i < len; i++)
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for (i = 0; i < len; i++)
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max_operand_1 (XVECEXP (insn, 1, i));
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max_operand_1 (XVECEXP (insn, 1, i));
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|
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return max_opno + 1;
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return max_opno + 1;
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}
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}
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|
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/* Print out a wrapper macro for a function which corrects the number
|
/* Print out a wrapper macro for a function which corrects the number
|
of arguments it takes. Any missing arguments are assumed to be at
|
of arguments it takes. Any missing arguments are assumed to be at
|
the end. */
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the end. */
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static void
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static void
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gen_macro (const char *name, int real, int expect)
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gen_macro (const char *name, int real, int expect)
|
{
|
{
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int i;
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int i;
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|
|
gcc_assert (real <= expect);
|
gcc_assert (real <= expect);
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gcc_assert (real);
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gcc_assert (real);
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|
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/* #define GEN_CALL(A, B, C, D) gen_call((A), (B)) */
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/* #define GEN_CALL(A, B, C, D) gen_call((A), (B)) */
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fputs ("#define GEN_", stdout);
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fputs ("#define GEN_", stdout);
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for (i = 0; name[i]; i++)
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for (i = 0; name[i]; i++)
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putchar (TOUPPER (name[i]));
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putchar (TOUPPER (name[i]));
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|
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putchar('(');
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putchar('(');
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for (i = 0; i < expect - 1; i++)
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for (i = 0; i < expect - 1; i++)
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printf ("%c, ", i + 'A');
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printf ("%c, ", i + 'A');
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printf ("%c) gen_%s (", i + 'A', name);
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printf ("%c) gen_%s (", i + 'A', name);
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|
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for (i = 0; i < real - 1; i++)
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for (i = 0; i < real - 1; i++)
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printf ("(%c), ", i + 'A');
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printf ("(%c), ", i + 'A');
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printf ("(%c))\n", i + 'A');
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printf ("(%c))\n", i + 'A');
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}
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}
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/* Print out prototype information for a generator function. If the
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/* Print out prototype information for a generator function. If the
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insn pattern has been elided, print out a dummy generator that
|
insn pattern has been elided, print out a dummy generator that
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does nothing. */
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does nothing. */
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static void
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static void
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gen_proto (rtx insn)
|
gen_proto (rtx insn)
|
{
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{
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int num = num_operands (insn);
|
int num = num_operands (insn);
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int i;
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int i;
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const char *name = XSTR (insn, 0);
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const char *name = XSTR (insn, 0);
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int truth = maybe_eval_c_test (XSTR (insn, 2));
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int truth = maybe_eval_c_test (XSTR (insn, 2));
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|
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/* Many md files don't refer to the last two operands passed to the
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/* Many md files don't refer to the last two operands passed to the
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call patterns. This means their generator functions will be two
|
call patterns. This means their generator functions will be two
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arguments too short. Instead of changing every md file to touch
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arguments too short. Instead of changing every md file to touch
|
those operands, we wrap the prototypes in macros that take the
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those operands, we wrap the prototypes in macros that take the
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correct number of arguments. */
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correct number of arguments. */
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if (name[0] == 'c' || name[0] == 's')
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if (name[0] == 'c' || name[0] == 's')
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{
|
{
|
if (!strcmp (name, "call")
|
if (!strcmp (name, "call")
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|| !strcmp (name, "call_pop")
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|| !strcmp (name, "call_pop")
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|| !strcmp (name, "sibcall")
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|| !strcmp (name, "sibcall")
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|| !strcmp (name, "sibcall_pop"))
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|| !strcmp (name, "sibcall_pop"))
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gen_macro (name, num, 4);
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gen_macro (name, num, 4);
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else if (!strcmp (name, "call_value")
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else if (!strcmp (name, "call_value")
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|| !strcmp (name, "call_value_pop")
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|| !strcmp (name, "call_value_pop")
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|| !strcmp (name, "sibcall_value")
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|| !strcmp (name, "sibcall_value")
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|| !strcmp (name, "sibcall_value_pop"))
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|| !strcmp (name, "sibcall_value_pop"))
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gen_macro (name, num, 5);
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gen_macro (name, num, 5);
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}
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}
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if (truth != 0)
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if (truth != 0)
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printf ("extern rtx gen_%-*s (", max_id_len, name);
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printf ("extern rtx gen_%-*s (", max_id_len, name);
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else
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else
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printf ("static inline rtx gen_%-*s (", max_id_len, name);
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printf ("static inline rtx gen_%-*s (", max_id_len, name);
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|
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if (num == 0)
|
if (num == 0)
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fputs ("void", stdout);
|
fputs ("void", stdout);
|
else
|
else
|
{
|
{
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for (i = 1; i < num; i++)
|
for (i = 1; i < num; i++)
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fputs ("rtx, ", stdout);
|
fputs ("rtx, ", stdout);
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|
|
fputs ("rtx", stdout);
|
fputs ("rtx", stdout);
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}
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}
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puts (");");
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puts (");");
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|
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/* Some back ends want to take the address of generator functions,
|
/* Some back ends want to take the address of generator functions,
|
so we cannot simply use #define for these dummy definitions. */
|
so we cannot simply use #define for these dummy definitions. */
|
if (truth == 0)
|
if (truth == 0)
|
{
|
{
|
printf ("static inline rtx\ngen_%s", name);
|
printf ("static inline rtx\ngen_%s", name);
|
if (num > 0)
|
if (num > 0)
|
{
|
{
|
putchar ('(');
|
putchar ('(');
|
for (i = 0; i < num-1; i++)
|
for (i = 0; i < num-1; i++)
|
printf ("rtx ARG_UNUSED (%c), ", 'a' + i);
|
printf ("rtx ARG_UNUSED (%c), ", 'a' + i);
|
printf ("rtx ARG_UNUSED (%c))\n", 'a' + i);
|
printf ("rtx ARG_UNUSED (%c))\n", 'a' + i);
|
}
|
}
|
else
|
else
|
puts ("(void)");
|
puts ("(void)");
|
puts ("{\n return 0;\n}");
|
puts ("{\n return 0;\n}");
|
}
|
}
|
|
|
}
|
}
|
|
|
static void
|
static void
|
gen_insn (rtx insn)
|
gen_insn (rtx insn)
|
{
|
{
|
const char *name = XSTR (insn, 0);
|
const char *name = XSTR (insn, 0);
|
const char *p;
|
const char *p;
|
int len;
|
int len;
|
int truth = maybe_eval_c_test (XSTR (insn, 2));
|
int truth = maybe_eval_c_test (XSTR (insn, 2));
|
|
|
/* Don't mention instructions whose names are the null string
|
/* Don't mention instructions whose names are the null string
|
or begin with '*'. They are in the machine description just
|
or begin with '*'. They are in the machine description just
|
to be recognized. */
|
to be recognized. */
|
if (name[0] == 0 || name[0] == '*')
|
if (name[0] == 0 || name[0] == '*')
|
return;
|
return;
|
|
|
len = strlen (name);
|
len = strlen (name);
|
|
|
if (len > max_id_len)
|
if (len > max_id_len)
|
max_id_len = len;
|
max_id_len = len;
|
|
|
if (truth == 0)
|
if (truth == 0)
|
/* Emit nothing. */;
|
/* Emit nothing. */;
|
else if (truth == 1)
|
else if (truth == 1)
|
printf ("#define HAVE_%s 1\n", name);
|
printf ("#define HAVE_%s 1\n", name);
|
else
|
else
|
{
|
{
|
/* Write the macro definition, putting \'s at the end of each line,
|
/* Write the macro definition, putting \'s at the end of each line,
|
if more than one. */
|
if more than one. */
|
printf ("#define HAVE_%s (", name);
|
printf ("#define HAVE_%s (", name);
|
for (p = XSTR (insn, 2); *p; p++)
|
for (p = XSTR (insn, 2); *p; p++)
|
{
|
{
|
if (IS_VSPACE (*p))
|
if (IS_VSPACE (*p))
|
fputs (" \\\n", stdout);
|
fputs (" \\\n", stdout);
|
else
|
else
|
putchar (*p);
|
putchar (*p);
|
}
|
}
|
fputs (")\n", stdout);
|
fputs (")\n", stdout);
|
}
|
}
|
|
|
obstack_grow (&obstack, &insn, sizeof (rtx));
|
obstack_grow (&obstack, &insn, sizeof (rtx));
|
}
|
}
|
|
|
int
|
int
|
main (int argc, char **argv)
|
main (int argc, char **argv)
|
{
|
{
|
rtx desc;
|
rtx desc;
|
rtx dummy;
|
rtx dummy;
|
rtx *insns;
|
rtx *insns;
|
rtx *insn_ptr;
|
rtx *insn_ptr;
|
|
|
progname = "genflags";
|
progname = "genflags";
|
obstack_init (&obstack);
|
obstack_init (&obstack);
|
|
|
/* We need to see all the possibilities. Elided insns may have
|
/* We need to see all the possibilities. Elided insns may have
|
direct calls to their generators in C code. */
|
direct calls to their generators in C code. */
|
insn_elision = 0;
|
insn_elision = 0;
|
|
|
if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
|
if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
|
return (FATAL_EXIT_CODE);
|
return (FATAL_EXIT_CODE);
|
|
|
puts ("/* Generated automatically by the program `genflags'");
|
puts ("/* Generated automatically by the program `genflags'");
|
puts (" from the machine description file `md'. */\n");
|
puts (" from the machine description file `md'. */\n");
|
puts ("#ifndef GCC_INSN_FLAGS_H");
|
puts ("#ifndef GCC_INSN_FLAGS_H");
|
puts ("#define GCC_INSN_FLAGS_H\n");
|
puts ("#define GCC_INSN_FLAGS_H\n");
|
|
|
/* Read the machine description. */
|
/* Read the machine description. */
|
|
|
while (1)
|
while (1)
|
{
|
{
|
int line_no, insn_code_number = 0;
|
int line_no, insn_code_number = 0;
|
|
|
desc = read_md_rtx (&line_no, &insn_code_number);
|
desc = read_md_rtx (&line_no, &insn_code_number);
|
if (desc == NULL)
|
if (desc == NULL)
|
break;
|
break;
|
if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
|
if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
|
gen_insn (desc);
|
gen_insn (desc);
|
}
|
}
|
|
|
/* Print out the prototypes now. */
|
/* Print out the prototypes now. */
|
dummy = (rtx) 0;
|
dummy = (rtx) 0;
|
obstack_grow (&obstack, &dummy, sizeof (rtx));
|
obstack_grow (&obstack, &dummy, sizeof (rtx));
|
insns = XOBFINISH (&obstack, rtx *);
|
insns = XOBFINISH (&obstack, rtx *);
|
|
|
for (insn_ptr = insns; *insn_ptr; insn_ptr++)
|
for (insn_ptr = insns; *insn_ptr; insn_ptr++)
|
gen_proto (*insn_ptr);
|
gen_proto (*insn_ptr);
|
|
|
puts("\n#endif /* GCC_INSN_FLAGS_H */");
|
puts("\n#endif /* GCC_INSN_FLAGS_H */");
|
|
|
if (ferror (stdout) || fflush (stdout) || fclose (stdout))
|
if (ferror (stdout) || fflush (stdout) || fclose (stdout))
|
return FATAL_EXIT_CODE;
|
return FATAL_EXIT_CODE;
|
|
|
return SUCCESS_EXIT_CODE;
|
return SUCCESS_EXIT_CODE;
|
}
|
}
|
|
|
