/* Generate code from machine description to extract operands from insn as rtl.
- Copyright (C) 1987, 91-93, 97-98, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1992, 1993, 1997, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-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.
+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
+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.
+GCC 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, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+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. */
#include "hconfig.h"
#include "system.h"
#include "rtl.h"
-#include "obstack.h"
#include "errors.h"
#include "insn-config.h"
+#include "gensupport.h"
-static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-
-/* Names for patterns. Need to allow linking with print-rtl. */
-char **insn_name_ptr;
/* This structure contains all the information needed to describe one
set of extractions methods. Each method may be used by more than
static struct extraction *extractions;
+/* Holds an array of names indexed by insn_code_number. */
+static char **insn_name_ptr = 0;
+static int insn_name_ptr_size = 0;
+
/* Number instruction patterns handled, starting at 0 for first one. */
static int insn_code_number;
static struct code_ptr *peepholes;
-static void gen_insn PROTO ((rtx));
-static void walk_rtx PROTO ((rtx, const char *));
-static void print_path PROTO ((char *));
+static void gen_insn PARAMS ((rtx));
+static void walk_rtx PARAMS ((rtx, const char *));
+static void print_path PARAMS ((const char *));
+static void record_insn_name PARAMS ((int, const char *));
static void
gen_insn (insn)
rtx insn;
{
- register int i;
- register struct extraction *p;
- register struct code_ptr *link;
+ int i;
+ struct extraction *p;
+ struct code_ptr *link;
op_count = 0;
dup_count = 0;
else
for (i = XVECLEN (insn, 1) - 1; i >= 0; i--)
{
- char *path = (char *) alloca (2);
+ char path[2];
path[0] = 'a' + i;
path[1] = 0;
rtx x;
const char *path;
{
- register RTX_CODE code;
- register int i;
- register int len;
- register const char *fmt;
+ RTX_CODE code;
+ int i;
+ int len;
+ const char *fmt;
int depth = strlen (path);
char *newpath;
break;
case MATCH_DUP:
- case MATCH_PAR_DUP:
duplocs[dup_count] = xstrdup (path);
dupnums[dup_count] = XINT (x, 0);
dup_count++;
break;
+ case MATCH_PAR_DUP:
case MATCH_OP_DUP:
duplocs[dup_count] = xstrdup (path);
dupnums[dup_count] = XINT (x, 0);
dup_count++;
- newpath = (char *) alloca (depth + 2);
+ newpath = (char *) xmalloc (depth + 2);
strcpy (newpath, path);
newpath[depth + 1] = 0;
for (i = XVECLEN (x, 1) - 1; i >= 0; i--)
{
- newpath[depth] = '0' + i;
+ newpath[depth] = (code == MATCH_OP_DUP ? '0' : 'a') + i;
walk_rtx (XVECEXP (x, 1, i), newpath);
}
+ free (newpath);
return;
case MATCH_OPERATOR:
oplocs[XINT (x, 0)] = xstrdup (path);
op_count = MAX (op_count, XINT (x, 0) + 1);
- newpath = (char *) alloca (depth + 2);
+ newpath = (char *) xmalloc (depth + 2);
strcpy (newpath, path);
newpath[depth + 1] = 0;
newpath[depth] = '0' + i;
walk_rtx (XVECEXP (x, 2, i), newpath);
}
+ free (newpath);
return;
case MATCH_PARALLEL:
oplocs[XINT (x, 0)] = xstrdup (path);
op_count = MAX (op_count, XINT (x, 0) + 1);
- newpath = (char *) alloca (depth + 2);
+ newpath = (char *) xmalloc (depth + 2);
strcpy (newpath, path);
newpath[depth + 1] = 0;
newpath[depth] = 'a' + i;
walk_rtx (XVECEXP (x, 2, i), newpath);
}
+ free (newpath);
return;
case ADDRESS:
break;
}
- newpath = (char *) alloca (depth + 2);
+ newpath = (char *) xmalloc (depth + 2);
strcpy (newpath, path);
newpath[depth + 1] = 0;
}
}
}
+ free (newpath);
}
/* Given a PATH, representing a path down the instruction's
static void
print_path (path)
- char *path;
+ const char *path;
{
- register int len = strlen (path);
- register int i;
+ int len = strlen (path);
+ int i;
if (len == 0)
{
}
}
\f
-PTR
-xmalloc (size)
- size_t size;
-{
- register PTR val = (PTR) malloc (size);
-
- if (val == 0)
- fatal ("virtual memory exhausted");
- return val;
-}
+extern int main PARAMS ((int, char **));
-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;
-}
-
-char *
-xstrdup (input)
- const char *input;
-{
- register size_t len = strlen (input) + 1;
- register char *output = xmalloc (len);
- memcpy (output, input, len);
- return output;
-}
-\f
int
main (argc, argv)
int argc;
char **argv;
{
rtx desc;
- FILE *infile;
- register int c, i;
+ int i;
struct extraction *p;
struct code_ptr *link;
+ const char *name;
progname = "genextract";
- obstack_init (rtl_obstack);
if (argc <= 1)
- fatal ("No input file name.");
+ fatal ("no input file name");
- infile = fopen (argv[1], "r");
- if (infile == 0)
- {
- perror (argv[1]);
- exit (FATAL_EXIT_CODE);
- }
+ if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
+ return (FATAL_EXIT_CODE);
/* Assign sequential codes to all entries in the machine description
in parallel with the tables in insn-output.c. */
printf ("void\ninsn_extract (insn)\n");
printf (" rtx insn;\n");
printf ("{\n");
- printf (" register rtx *ro = recog_data.operand;\n");
- printf (" register rtx **ro_loc = recog_data.operand_loc;\n");
+ printf (" rtx *ro = recog_data.operand;\n");
+ printf (" rtx **ro_loc = recog_data.operand_loc;\n");
printf (" rtx pat = PATTERN (insn);\n");
printf (" int i ATTRIBUTE_UNUSED;\n\n");
printf (" memset (ro, 0, sizeof (*ro) * MAX_RECOG_OPERANDS);\n");
while (1)
{
- c = read_skip_spaces (infile);
- if (c == EOF)
+ int line_no;
+
+ desc = read_md_rtx (&line_no, &insn_code_number);
+ if (desc == NULL)
break;
- ungetc (c, infile);
- desc = read_rtx (infile);
- if (GET_CODE (desc) == DEFINE_INSN)
+ if (GET_CODE (desc) == DEFINE_INSN)
{
+ record_insn_name (insn_code_number, XSTR (desc, 0));
gen_insn (desc);
- ++insn_code_number;
}
else if (GET_CODE (desc) == DEFINE_PEEPHOLE)
link->insn_code = insn_code_number;
link->next = peepholes;
peepholes = link;
- ++insn_code_number;
}
-
- else if (GET_CODE (desc) == DEFINE_EXPAND
- || GET_CODE (desc) == DEFINE_PEEPHOLE2
- || GET_CODE (desc) == DEFINE_SPLIT)
- ++insn_code_number;
}
/* Write out code to handle peepholes and the insn_codes that it should
/* The vector in the insn says how many operands it has.
And all it contains are operands. In fact, the vector was
- created just for the sake of this function. */
+ created just for the sake of this function. We need to set the
+ location of the operands for sake of simplifications after
+ extraction, like eliminating subregs. */
printf (" for (i = XVECLEN (pat, 0) - 1; i >= 0; i--)\n");
- printf (" ro[i] = XVECEXP (pat, 0, i);\n");
+ printf (" ro[i] = *(ro_loc[i] = &XVECEXP (pat, 0, i));\n");
printf (" break;\n\n");
}
for (p = extractions; p; p = p->next)
{
for (link = p->insns; link; link = link->next)
- printf (" case %d:\n", link->insn_code);
-
+ {
+ i = link->insn_code;
+ name = get_insn_name (i);
+ if (name)
+ printf (" case %d: /* %s */\n", i, name);
+ else
+ printf (" case %d:\n", i);
+ }
+
for (i = 0; i < p->op_count; i++)
{
if (p->oplocs[i] == 0)
printf (" }\n}\n");
fflush (stdout);
- exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
- /* NOTREACHED */
- return 0;
+ return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : 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;
+{
+ if (code < insn_name_ptr_size)
+ return insn_name_ptr[code];
+ else
+ return NULL;
+}
+
+static void
+record_insn_name (code, name)
+ int code;
+ const char *name;
+{
+ static const char *last_real_name = "insn";
+ static int last_real_code = 0;
+ char *new;
+
+ if (insn_name_ptr_size <= code)
+ {
+ int new_size;
+ new_size = (insn_name_ptr_size ? insn_name_ptr_size * 2 : 512);
+ insn_name_ptr =
+ (char **) xrealloc (insn_name_ptr, sizeof(char *) * new_size);
+ memset (insn_name_ptr + insn_name_ptr_size, 0,
+ sizeof(char *) * (new_size - insn_name_ptr_size));
+ insn_name_ptr_size = new_size;
+ }
+
+ if (!name || name[0] == '\0')
+ {
+ new = xmalloc (strlen (last_real_name) + 10);
+ sprintf (new, "%s+%d", last_real_name, code - last_real_code);
+ }
+ else
+ {
+ last_real_name = new = xstrdup (name);
+ last_real_code = code;
+ }
+
+ insn_name_ptr[code] = new;
+}
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