/* Generate from machine description:
- some flags HAVE_... saying which simple standard instructions are
available for this machine.
- Copyright (C) 1987, 1991, 1995, 1998,
- 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1987-2019 Free Software Foundation, Inc.
This file is part of GCC.
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
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
-#include "hconfig.h"
+#include "bconfig.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
#include "obstack.h"
#include "errors.h"
+#include "read-md.h"
#include "gensupport.h"
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-
/* Obstack to remember insns with. */
static struct obstack obstack;
/* 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));
+static void max_operand_1 (rtx);
+static int num_operands (rtx);
+static void gen_proto (rtx);
/* Count the number of match_operand's found. */
static void
-max_operand_1 (x)
- rtx x;
+max_operand_1 (rtx x)
{
RTX_CODE code;
int i;
}
static int
-num_operands (insn)
- rtx insn;
+num_operands (rtx insn)
{
int len = XVECLEN (insn, 1);
int 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. */
+/* Print out prototype information for a generator function. If the
+ insn pattern has been elided, print out a dummy generator that
+ does nothing. */
static void
-gen_proto (insn)
- rtx insn;
+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));
- /* 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 (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)
- printf ("void");
+ fputs ("void", stdout);
else
{
- while (num-- > 1)
- printf ("struct rtx_def *, ");
+ for (i = 1; i < num; i++)
+ fputs ("rtx, ", stdout);
- printf ("struct rtx_def *");
+ fputs ("rtx", stdout);
}
- printf ("));\n");
+ puts (");");
+
+ /* Some back ends want to take the address of generator functions,
+ so we cannot simply use #define for these dummy definitions. */
+ 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 (insn)
- rtx insn;
+gen_insn (md_rtx_info *info)
{
+ rtx insn = info->def;
const char *name = XSTR (insn, 0);
const char *p;
+ const char *lt, *gt;
int len;
+ int truth = maybe_eval_c_test (XSTR (insn, 2));
+
+ lt = strchr (name, '<');
+ if (lt && strchr (lt + 1, '>'))
+ {
+ error_at (info->loc, "unresolved iterator");
+ return;
+ }
+
+ gt = strchr (name, '>');
+ if (lt || gt)
+ {
+ error_at (info->loc, "unmatched angle brackets, likely "
+ "an error in iterator syntax");
+ return;
+ }
/* Don't mention instructions whose names are the null string
or begin with '*'. They are in the machine description just
if (len > max_id_len)
max_id_len = len;
- printf ("#define HAVE_%s ", name);
- if (strlen (XSTR (insn, 2)) == 0)
- printf ("1\n");
+ if (truth == 0)
+ /* Emit nothing. */;
+ else if (truth == 1)
+ printf ("#define HAVE_%s 1\n", name);
else
{
/* Write the macro definition, putting \'s at the end of each line,
if more than one. */
- printf ("(");
+ printf ("#define HAVE_%s (", name);
for (p = XSTR (insn, 2); *p; p++)
{
if (IS_VSPACE (*p))
- printf (" \\\n");
+ fputs (" \\\n", stdout);
else
- printf ("%c", *p);
+ putchar (*p);
}
- printf (")\n");
+ fputs (")\n", stdout);
}
obstack_grow (&obstack, &insn, sizeof (rtx));
}
-extern int main PARAMS ((int, char **));
-
int
-main (argc, argv)
- int argc;
- char **argv;
+main (int argc, const char **argv)
{
- rtx desc;
rtx dummy;
rtx *insns;
rtx *insn_ptr;
progname = "genflags";
obstack_init (&obstack);
- if (argc <= 1)
- fatal ("no input file name");
+ /* We need to see all the possibilities. Elided insns may have
+ direct calls to their generators in C code. */
+ insn_elision = 0;
- if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
+ if (!init_rtx_reader_args (argc, argv))
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");
/* Read the machine description. */
- while (1)
- {
- int line_no, insn_code_number = 0;
+ md_rtx_info info;
+ while (read_md_rtx (&info))
+ switch (GET_CODE (info.def))
+ {
+ case DEFINE_INSN:
+ case DEFINE_EXPAND:
+ gen_insn (&info);
+ break;
- desc = read_md_rtx (&line_no, &insn_code_number);
- if (desc == NULL)
+ default:
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 (&obstack, &dummy, sizeof (rtx));
- insns = (rtx *) obstack_finish (&obstack);
+ insns = XOBFINISH (&obstack, rtx *);
- printf ("struct rtx_def;\n");
for (insn_ptr = insns; *insn_ptr; 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 (have_error || ferror (stdout) || fflush (stdout) || fclose (stdout))
return FATAL_EXIT_CODE;
return SUCCESS_EXIT_CODE;
}
-
-/* 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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