1089 lines
27 KiB
C
1089 lines
27 KiB
C
/* Generate code from to output assembler insns as recognized from rtl.
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Copyright (C) 1987, 1988, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2002,
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2003, 2004 Free Software Foundation, Inc.
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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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the terms of the GNU General Public License as published by the Free
|
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Software Foundation; either version 2, or (at your option) any later
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version.
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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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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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/* This program reads the machine description for the compiler target machine
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and produces a file containing these things:
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1. An array of `struct insn_data', which is indexed by insn code number,
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which contains:
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a. `name' is the name for that pattern. Nameless patterns are
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given a name.
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b. `output' hold either the output template, an array of output
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templates, or an output function.
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c. `genfun' is the function to generate a body for that pattern,
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given operands as arguments.
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d. `n_operands' is the number of distinct operands in the pattern
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for that insn,
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e. `n_dups' is the number of match_dup's that appear in the insn's
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pattern. This says how many elements of `recog_data.dup_loc' are
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significant after an insn has been recognized.
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f. `n_alternatives' is the number of alternatives in the constraints
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of each pattern.
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g. `output_format' tells what type of thing `output' is.
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h. `operand' is the base of an array of operand data for the insn.
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2. An array of `struct insn_operand data', used by `operand' above.
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a. `predicate', an int-valued function, is the match_operand predicate
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for this operand.
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b. `constraint' is the constraint for this operand. This exists
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only if register constraints appear in match_operand rtx's.
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c. `address_p' indicates that the operand appears within ADDRESS
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rtx's. This exists only if there are *no* register constraints
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in the match_operand rtx's.
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d. `mode' is the machine mode that that operand is supposed to have.
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e. `strict_low', is nonzero for operands contained in a STRICT_LOW_PART.
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f. `eliminable', is nonzero for operands that are matched normally by
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MATCH_OPERAND; it is zero for operands that should not be changed during
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register elimination such as MATCH_OPERATORs.
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The code number of an insn is simply its position in the machine
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description; code numbers are assigned sequentially to entries in
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the description, starting with code number 0.
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Thus, the following entry in the machine description
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(define_insn "clrdf"
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[(set (match_operand:DF 0 "general_operand" "")
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(const_int 0))]
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""
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"clrd %0")
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assuming it is the 25th entry present, would cause
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insn_data[24].template to be "clrd %0", and
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insn_data[24].n_operands to be 1. */
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#include "bconfig.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "rtl.h"
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#include "errors.h"
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#include "gensupport.h"
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/* No instruction can have more operands than this. Sorry for this
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arbitrary limit, but what machine will have an instruction with
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this many operands? */
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#define MAX_MAX_OPERANDS 40
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static int n_occurrences (int, const char *);
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static const char *strip_whitespace (const char *);
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/* insns in the machine description are assigned sequential code numbers
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that are used by insn-recog.c (produced by genrecog) to communicate
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to insn-output.c (produced by this program). */
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static int next_code_number;
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/* This counts all definitions in the md file,
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for the sake of error messages. */
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static int next_index_number;
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/* This counts all operands used in the md file. The first is null. */
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static int next_operand_number = 1;
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/* Record in this chain all information about the operands we will output. */
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struct operand_data
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{
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struct operand_data *next;
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int index;
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const char *predicate;
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const char *constraint;
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enum machine_mode mode;
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unsigned char n_alternatives;
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char address_p;
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char strict_low;
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char eliminable;
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char seen;
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};
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/* Begin with a null operand at index 0. */
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static struct operand_data null_operand =
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{
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0, 0, "", "", VOIDmode, 0, 0, 0, 0, 0
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};
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static struct operand_data *odata = &null_operand;
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static struct operand_data **odata_end = &null_operand.next;
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/* Must match the constants in recog.h. */
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#define INSN_OUTPUT_FORMAT_NONE 0 /* abort */
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#define INSN_OUTPUT_FORMAT_SINGLE 1 /* const char * */
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#define INSN_OUTPUT_FORMAT_MULTI 2 /* const char * const * */
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#define INSN_OUTPUT_FORMAT_FUNCTION 3 /* const char * (*)(...) */
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/* Record in this chain all information that we will output,
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associated with the code number of the insn. */
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struct data
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{
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struct data *next;
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const char *name;
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const char *template;
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int code_number;
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int index_number;
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int lineno;
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int n_operands; /* Number of operands this insn recognizes */
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int n_dups; /* Number times match_dup appears in pattern */
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int n_alternatives; /* Number of alternatives in each constraint */
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int operand_number; /* Operand index in the big array. */
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int output_format; /* INSN_OUTPUT_FORMAT_*. */
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struct operand_data operand[MAX_MAX_OPERANDS];
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};
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/* This variable points to the first link in the insn chain. */
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static struct data *idata, **idata_end = &idata;
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static void output_prologue (void);
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static void output_operand_data (void);
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static void output_insn_data (void);
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static void output_get_insn_name (void);
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static void scan_operands (struct data *, rtx, int, int);
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static int compare_operands (struct operand_data *,
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struct operand_data *);
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static void place_operands (struct data *);
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static void process_template (struct data *, const char *);
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static void validate_insn_alternatives (struct data *);
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static void validate_insn_operands (struct data *);
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static void gen_insn (rtx, int);
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static void gen_peephole (rtx, int);
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static void gen_expand (rtx, int);
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static void gen_split (rtx, int);
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static void check_constraint_len (void);
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static int constraint_len (const char *, int);
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const char *
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get_insn_name (int index)
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{
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static char buf[100];
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struct data *i, *last_named = NULL;
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for (i = idata; i ; i = i->next)
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{
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if (i->index_number == index)
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return i->name;
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if (i->name)
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last_named = i;
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}
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if (last_named)
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sprintf(buf, "%s+%d", last_named->name, index - last_named->index_number);
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else
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sprintf(buf, "insn %d", index);
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return buf;
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}
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static void
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output_prologue (void)
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{
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printf ("/* Generated automatically by the program `genoutput'\n\
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from the machine description file `md'. */\n\n");
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printf ("#include \"config.h\"\n");
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printf ("#include \"system.h\"\n");
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printf ("#include \"coretypes.h\"\n");
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printf ("#include \"tm.h\"\n");
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printf ("#include \"flags.h\"\n");
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printf ("#include \"ggc.h\"\n");
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printf ("#include \"rtl.h\"\n");
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printf ("#include \"expr.h\"\n");
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printf ("#include \"insn-codes.h\"\n");
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printf ("#include \"tm_p.h\"\n");
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printf ("#include \"function.h\"\n");
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printf ("#include \"regs.h\"\n");
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printf ("#include \"hard-reg-set.h\"\n");
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printf ("#include \"real.h\"\n");
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printf ("#include \"insn-config.h\"\n\n");
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printf ("#include \"conditions.h\"\n");
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printf ("#include \"insn-attr.h\"\n\n");
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printf ("#include \"recog.h\"\n\n");
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printf ("#include \"toplev.h\"\n");
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printf ("#include \"output.h\"\n");
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printf ("#include \"target.h\"\n");
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}
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static void
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output_operand_data (void)
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{
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struct operand_data *d;
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printf ("\nstatic const struct insn_operand_data operand_data[] = \n{\n");
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for (d = odata; d; d = d->next)
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{
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printf (" {\n");
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printf (" %s,\n",
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d->predicate && d->predicate[0] ? d->predicate : "0");
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printf (" \"%s\",\n", d->constraint ? d->constraint : "");
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printf (" %smode,\n", GET_MODE_NAME (d->mode));
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printf (" %d,\n", d->strict_low);
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printf (" %d\n", d->eliminable);
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printf(" },\n");
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}
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printf("};\n\n\n");
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}
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static void
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output_insn_data (void)
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{
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struct data *d;
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int name_offset = 0;
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int next_name_offset;
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const char * last_name = 0;
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const char * next_name = 0;
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struct data *n;
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for (n = idata, next_name_offset = 1; n; n = n->next, next_name_offset++)
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if (n->name)
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{
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next_name = n->name;
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break;
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}
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printf ("#if GCC_VERSION >= 2007\n__extension__\n#endif\n");
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printf ("\nconst struct insn_data insn_data[] = \n{\n");
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for (d = idata; d; d = d->next)
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{
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printf (" {\n");
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if (d->name)
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{
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printf (" \"%s\",\n", d->name);
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name_offset = 0;
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last_name = d->name;
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next_name = 0;
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for (n = d->next, next_name_offset = 1; n;
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n = n->next, next_name_offset++)
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{
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if (n->name)
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{
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next_name = n->name;
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break;
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}
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}
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}
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else
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{
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name_offset++;
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if (next_name && (last_name == 0
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|| name_offset > next_name_offset / 2))
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printf (" \"%s-%d\",\n", next_name,
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next_name_offset - name_offset);
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else
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printf (" \"%s+%d\",\n", last_name, name_offset);
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}
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switch (d->output_format)
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{
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case INSN_OUTPUT_FORMAT_NONE:
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printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
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printf (" { 0 },\n");
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printf ("#else\n");
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printf (" { 0, 0, 0 },\n");
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printf ("#endif\n");
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break;
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case INSN_OUTPUT_FORMAT_SINGLE:
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{
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const char *p = d->template;
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char prev = 0;
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printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
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printf (" { .single =\n");
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printf ("#else\n");
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printf (" {\n");
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printf ("#endif\n");
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printf (" \"");
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while (*p)
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{
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if (IS_VSPACE (*p) && prev != '\\')
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{
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/* Preserve two consecutive \n's or \r's, but treat \r\n
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as a single newline. */
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if (*p == '\n' && prev != '\r')
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printf ("\\n\\\n");
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}
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else
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putchar (*p);
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prev = *p;
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++p;
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}
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printf ("\",\n");
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printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
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printf (" },\n");
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printf ("#else\n");
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printf (" 0, 0 },\n");
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printf ("#endif\n");
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}
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break;
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case INSN_OUTPUT_FORMAT_MULTI:
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printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
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printf (" { .multi = output_%d },\n", d->code_number);
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printf ("#else\n");
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printf (" { 0, output_%d, 0 },\n", d->code_number);
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printf ("#endif\n");
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break;
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case INSN_OUTPUT_FORMAT_FUNCTION:
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printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
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printf (" { .function = output_%d },\n", d->code_number);
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printf ("#else\n");
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||
printf (" { 0, 0, output_%d },\n", d->code_number);
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||
printf ("#endif\n");
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break;
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||
default:
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||
abort ();
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||
}
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||
|
||
if (d->name && d->name[0] != '*')
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||
printf (" (insn_gen_fn) gen_%s,\n", d->name);
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||
else
|
||
printf (" 0,\n");
|
||
|
||
printf (" &operand_data[%d],\n", d->operand_number);
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printf (" %d,\n", d->n_operands);
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||
printf (" %d,\n", d->n_dups);
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||
printf (" %d,\n", d->n_alternatives);
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||
printf (" %d\n", d->output_format);
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||
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||
printf(" },\n");
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||
}
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||
printf ("};\n\n\n");
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||
}
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||
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||
static void
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||
output_get_insn_name (void)
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||
{
|
||
printf ("const char *\n");
|
||
printf ("get_insn_name (int code)\n");
|
||
printf ("{\n");
|
||
printf (" if (code == NOOP_MOVE_INSN_CODE)\n");
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||
printf (" return \"NOOP_MOVE\";\n");
|
||
printf (" else\n");
|
||
printf (" return insn_data[code].name;\n");
|
||
printf ("}\n");
|
||
}
|
||
|
||
|
||
/* Stores in max_opno the largest operand number present in `part', if
|
||
that is larger than the previous value of max_opno, and the rest of
|
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the operand data into `d->operand[i]'.
|
||
|
||
THIS_ADDRESS_P is nonzero if the containing rtx was an ADDRESS.
|
||
THIS_STRICT_LOW is nonzero if the containing rtx was a STRICT_LOW_PART. */
|
||
|
||
static int max_opno;
|
||
static int num_dups;
|
||
|
||
static void
|
||
scan_operands (struct data *d, rtx part, int this_address_p,
|
||
int this_strict_low)
|
||
{
|
||
int i, j;
|
||
const char *format_ptr;
|
||
int opno;
|
||
|
||
if (part == 0)
|
||
return;
|
||
|
||
switch (GET_CODE (part))
|
||
{
|
||
case MATCH_OPERAND:
|
||
opno = XINT (part, 0);
|
||
if (opno > max_opno)
|
||
max_opno = opno;
|
||
if (max_opno >= MAX_MAX_OPERANDS)
|
||
{
|
||
message_with_line (d->lineno,
|
||
"maximum number of operands exceeded");
|
||
have_error = 1;
|
||
return;
|
||
}
|
||
if (d->operand[opno].seen)
|
||
{
|
||
message_with_line (d->lineno,
|
||
"repeated operand number %d\n", opno);
|
||
have_error = 1;
|
||
}
|
||
|
||
d->operand[opno].seen = 1;
|
||
d->operand[opno].mode = GET_MODE (part);
|
||
d->operand[opno].strict_low = this_strict_low;
|
||
d->operand[opno].predicate = XSTR (part, 1);
|
||
d->operand[opno].constraint = strip_whitespace (XSTR (part, 2));
|
||
d->operand[opno].n_alternatives
|
||
= n_occurrences (',', d->operand[opno].constraint) + 1;
|
||
d->operand[opno].address_p = this_address_p;
|
||
d->operand[opno].eliminable = 1;
|
||
return;
|
||
|
||
case MATCH_SCRATCH:
|
||
opno = XINT (part, 0);
|
||
if (opno > max_opno)
|
||
max_opno = opno;
|
||
if (max_opno >= MAX_MAX_OPERANDS)
|
||
{
|
||
message_with_line (d->lineno,
|
||
"maximum number of operands exceeded");
|
||
have_error = 1;
|
||
return;
|
||
}
|
||
if (d->operand[opno].seen)
|
||
{
|
||
message_with_line (d->lineno,
|
||
"repeated operand number %d\n", opno);
|
||
have_error = 1;
|
||
}
|
||
|
||
d->operand[opno].seen = 1;
|
||
d->operand[opno].mode = GET_MODE (part);
|
||
d->operand[opno].strict_low = 0;
|
||
d->operand[opno].predicate = "scratch_operand";
|
||
d->operand[opno].constraint = strip_whitespace (XSTR (part, 1));
|
||
d->operand[opno].n_alternatives
|
||
= n_occurrences (',', d->operand[opno].constraint) + 1;
|
||
d->operand[opno].address_p = 0;
|
||
d->operand[opno].eliminable = 0;
|
||
return;
|
||
|
||
case MATCH_OPERATOR:
|
||
case MATCH_PARALLEL:
|
||
opno = XINT (part, 0);
|
||
if (opno > max_opno)
|
||
max_opno = opno;
|
||
if (max_opno >= MAX_MAX_OPERANDS)
|
||
{
|
||
message_with_line (d->lineno,
|
||
"maximum number of operands exceeded");
|
||
have_error = 1;
|
||
return;
|
||
}
|
||
if (d->operand[opno].seen)
|
||
{
|
||
message_with_line (d->lineno,
|
||
"repeated operand number %d\n", opno);
|
||
have_error = 1;
|
||
}
|
||
|
||
d->operand[opno].seen = 1;
|
||
d->operand[opno].mode = GET_MODE (part);
|
||
d->operand[opno].strict_low = 0;
|
||
d->operand[opno].predicate = XSTR (part, 1);
|
||
d->operand[opno].constraint = 0;
|
||
d->operand[opno].address_p = 0;
|
||
d->operand[opno].eliminable = 0;
|
||
for (i = 0; i < XVECLEN (part, 2); i++)
|
||
scan_operands (d, XVECEXP (part, 2, i), 0, 0);
|
||
return;
|
||
|
||
case MATCH_DUP:
|
||
case MATCH_OP_DUP:
|
||
case MATCH_PAR_DUP:
|
||
++num_dups;
|
||
break;
|
||
|
||
case ADDRESS:
|
||
scan_operands (d, XEXP (part, 0), 1, 0);
|
||
return;
|
||
|
||
case STRICT_LOW_PART:
|
||
scan_operands (d, XEXP (part, 0), 0, 1);
|
||
return;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
format_ptr = GET_RTX_FORMAT (GET_CODE (part));
|
||
|
||
for (i = 0; i < GET_RTX_LENGTH (GET_CODE (part)); i++)
|
||
switch (*format_ptr++)
|
||
{
|
||
case 'e':
|
||
case 'u':
|
||
scan_operands (d, XEXP (part, i), 0, 0);
|
||
break;
|
||
case 'E':
|
||
if (XVEC (part, i) != NULL)
|
||
for (j = 0; j < XVECLEN (part, i); j++)
|
||
scan_operands (d, XVECEXP (part, i, j), 0, 0);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Compare two operands for content equality. */
|
||
|
||
static int
|
||
compare_operands (struct operand_data *d0, struct operand_data *d1)
|
||
{
|
||
const char *p0, *p1;
|
||
|
||
p0 = d0->predicate;
|
||
if (!p0)
|
||
p0 = "";
|
||
p1 = d1->predicate;
|
||
if (!p1)
|
||
p1 = "";
|
||
if (strcmp (p0, p1) != 0)
|
||
return 0;
|
||
|
||
p0 = d0->constraint;
|
||
if (!p0)
|
||
p0 = "";
|
||
p1 = d1->constraint;
|
||
if (!p1)
|
||
p1 = "";
|
||
if (strcmp (p0, p1) != 0)
|
||
return 0;
|
||
|
||
if (d0->mode != d1->mode)
|
||
return 0;
|
||
|
||
if (d0->strict_low != d1->strict_low)
|
||
return 0;
|
||
|
||
if (d0->eliminable != d1->eliminable)
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Scan the list of operands we've already committed to output and either
|
||
find a subsequence that is the same, or allocate a new one at the end. */
|
||
|
||
static void
|
||
place_operands (struct data *d)
|
||
{
|
||
struct operand_data *od, *od2;
|
||
int i;
|
||
|
||
if (d->n_operands == 0)
|
||
{
|
||
d->operand_number = 0;
|
||
return;
|
||
}
|
||
|
||
/* Brute force substring search. */
|
||
for (od = odata, i = 0; od; od = od->next, i = 0)
|
||
if (compare_operands (od, &d->operand[0]))
|
||
{
|
||
od2 = od->next;
|
||
i = 1;
|
||
while (1)
|
||
{
|
||
if (i == d->n_operands)
|
||
goto full_match;
|
||
if (od2 == NULL)
|
||
goto partial_match;
|
||
if (! compare_operands (od2, &d->operand[i]))
|
||
break;
|
||
++i, od2 = od2->next;
|
||
}
|
||
}
|
||
|
||
/* Either partial match at the end of the list, or no match. In either
|
||
case, we tack on what operands are remaining to the end of the list. */
|
||
partial_match:
|
||
d->operand_number = next_operand_number - i;
|
||
for (; i < d->n_operands; ++i)
|
||
{
|
||
od2 = &d->operand[i];
|
||
*odata_end = od2;
|
||
odata_end = &od2->next;
|
||
od2->index = next_operand_number++;
|
||
}
|
||
*odata_end = NULL;
|
||
return;
|
||
|
||
full_match:
|
||
d->operand_number = od->index;
|
||
return;
|
||
}
|
||
|
||
|
||
/* Process an assembler template from a define_insn or a define_peephole.
|
||
It is either the assembler code template, a list of assembler code
|
||
templates, or C code to generate the assembler code template. */
|
||
|
||
static void
|
||
process_template (struct data *d, const char *template)
|
||
{
|
||
const char *cp;
|
||
int i;
|
||
|
||
/* Templates starting with * contain straight code to be run. */
|
||
if (template[0] == '*')
|
||
{
|
||
d->template = 0;
|
||
d->output_format = INSN_OUTPUT_FORMAT_FUNCTION;
|
||
|
||
puts ("\nstatic const char *");
|
||
printf ("output_%d (rtx *operands ATTRIBUTE_UNUSED, rtx insn ATTRIBUTE_UNUSED)\n",
|
||
d->code_number);
|
||
puts ("{");
|
||
|
||
puts (template + 1);
|
||
puts ("}");
|
||
}
|
||
|
||
/* If the assembler code template starts with a @ it is a newline-separated
|
||
list of assembler code templates, one for each alternative. */
|
||
else if (template[0] == '@')
|
||
{
|
||
d->template = 0;
|
||
d->output_format = INSN_OUTPUT_FORMAT_MULTI;
|
||
|
||
printf ("\nstatic const char * const output_%d[] = {\n", d->code_number);
|
||
|
||
for (i = 0, cp = &template[1]; *cp; )
|
||
{
|
||
while (ISSPACE (*cp))
|
||
cp++;
|
||
|
||
printf (" \"");
|
||
while (!IS_VSPACE (*cp) && *cp != '\0')
|
||
{
|
||
putchar (*cp);
|
||
cp++;
|
||
}
|
||
|
||
printf ("\",\n");
|
||
i++;
|
||
}
|
||
if (i == 1)
|
||
message_with_line (d->lineno,
|
||
"'@' is redundant for output template with single alternative");
|
||
if (i != d->n_alternatives)
|
||
{
|
||
message_with_line (d->lineno,
|
||
"wrong number of alternatives in the output template");
|
||
have_error = 1;
|
||
}
|
||
|
||
printf ("};\n");
|
||
}
|
||
else
|
||
{
|
||
d->template = template;
|
||
d->output_format = INSN_OUTPUT_FORMAT_SINGLE;
|
||
}
|
||
}
|
||
|
||
/* Check insn D for consistency in number of constraint alternatives. */
|
||
|
||
static void
|
||
validate_insn_alternatives (struct data *d)
|
||
{
|
||
int n = 0, start;
|
||
|
||
/* Make sure all the operands have the same number of alternatives
|
||
in their constraints. Let N be that number. */
|
||
for (start = 0; start < d->n_operands; start++)
|
||
if (d->operand[start].n_alternatives > 0)
|
||
{
|
||
int len, i;
|
||
const char *p;
|
||
char c;
|
||
int which_alternative = 0;
|
||
int alternative_count_unsure = 0;
|
||
|
||
for (p = d->operand[start].constraint; (c = *p); p += len)
|
||
{
|
||
len = CONSTRAINT_LEN (c, p);
|
||
|
||
if (len < 1 || (len > 1 && strchr (",#*+=&%!0123456789", c)))
|
||
{
|
||
message_with_line (d->lineno,
|
||
"invalid length %d for char '%c' in alternative %d of operand %d",
|
||
len, c, which_alternative, start);
|
||
len = 1;
|
||
have_error = 1;
|
||
}
|
||
|
||
if (c == ',')
|
||
{
|
||
which_alternative++;
|
||
continue;
|
||
}
|
||
|
||
for (i = 1; i < len; i++)
|
||
if (p[i] == '\0')
|
||
{
|
||
message_with_line (d->lineno,
|
||
"NUL in alternative %d of operand %d",
|
||
which_alternative, start);
|
||
alternative_count_unsure = 1;
|
||
break;
|
||
}
|
||
else if (strchr (",#*", p[i]))
|
||
{
|
||
message_with_line (d->lineno,
|
||
"'%c' in alternative %d of operand %d",
|
||
p[i], which_alternative, start);
|
||
alternative_count_unsure = 1;
|
||
}
|
||
}
|
||
if (alternative_count_unsure)
|
||
have_error = 1;
|
||
else if (n == 0)
|
||
n = d->operand[start].n_alternatives;
|
||
else if (n != d->operand[start].n_alternatives)
|
||
{
|
||
message_with_line (d->lineno,
|
||
"wrong number of alternatives in operand %d",
|
||
start);
|
||
have_error = 1;
|
||
}
|
||
}
|
||
|
||
/* Record the insn's overall number of alternatives. */
|
||
d->n_alternatives = n;
|
||
}
|
||
|
||
/* Verify that there are no gaps in operand numbers for INSNs. */
|
||
|
||
static void
|
||
validate_insn_operands (struct data *d)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < d->n_operands; ++i)
|
||
if (d->operand[i].seen == 0)
|
||
{
|
||
message_with_line (d->lineno, "missing operand %d", i);
|
||
have_error = 1;
|
||
}
|
||
}
|
||
|
||
/* Look at a define_insn just read. Assign its code number. Record
|
||
on idata the template and the number of arguments. If the insn has
|
||
a hairy output action, output a function for now. */
|
||
|
||
static void
|
||
gen_insn (rtx insn, int lineno)
|
||
{
|
||
struct data *d = xmalloc (sizeof (struct data));
|
||
int i;
|
||
|
||
d->code_number = next_code_number;
|
||
d->index_number = next_index_number;
|
||
d->lineno = lineno;
|
||
if (XSTR (insn, 0)[0])
|
||
d->name = XSTR (insn, 0);
|
||
else
|
||
d->name = 0;
|
||
|
||
/* Build up the list in the same order as the insns are seen
|
||
in the machine description. */
|
||
d->next = 0;
|
||
*idata_end = d;
|
||
idata_end = &d->next;
|
||
|
||
max_opno = -1;
|
||
num_dups = 0;
|
||
memset (d->operand, 0, sizeof (d->operand));
|
||
|
||
for (i = 0; i < XVECLEN (insn, 1); i++)
|
||
scan_operands (d, XVECEXP (insn, 1, i), 0, 0);
|
||
|
||
d->n_operands = max_opno + 1;
|
||
d->n_dups = num_dups;
|
||
|
||
check_constraint_len ();
|
||
validate_insn_operands (d);
|
||
validate_insn_alternatives (d);
|
||
place_operands (d);
|
||
process_template (d, XTMPL (insn, 3));
|
||
}
|
||
|
||
/* Look at a define_peephole just read. Assign its code number.
|
||
Record on idata the template and the number of arguments.
|
||
If the insn has a hairy output action, output it now. */
|
||
|
||
static void
|
||
gen_peephole (rtx peep, int lineno)
|
||
{
|
||
struct data *d = xmalloc (sizeof (struct data));
|
||
int i;
|
||
|
||
d->code_number = next_code_number;
|
||
d->index_number = next_index_number;
|
||
d->lineno = lineno;
|
||
d->name = 0;
|
||
|
||
/* Build up the list in the same order as the insns are seen
|
||
in the machine description. */
|
||
d->next = 0;
|
||
*idata_end = d;
|
||
idata_end = &d->next;
|
||
|
||
max_opno = -1;
|
||
num_dups = 0;
|
||
memset (d->operand, 0, sizeof (d->operand));
|
||
|
||
/* Get the number of operands by scanning all the patterns of the
|
||
peephole optimizer. But ignore all the rest of the information
|
||
thus obtained. */
|
||
for (i = 0; i < XVECLEN (peep, 0); i++)
|
||
scan_operands (d, XVECEXP (peep, 0, i), 0, 0);
|
||
|
||
d->n_operands = max_opno + 1;
|
||
d->n_dups = 0;
|
||
|
||
validate_insn_alternatives (d);
|
||
place_operands (d);
|
||
process_template (d, XTMPL (peep, 2));
|
||
}
|
||
|
||
/* Process a define_expand just read. Assign its code number,
|
||
only for the purposes of `insn_gen_function'. */
|
||
|
||
static void
|
||
gen_expand (rtx insn, int lineno)
|
||
{
|
||
struct data *d = xmalloc (sizeof (struct data));
|
||
int i;
|
||
|
||
d->code_number = next_code_number;
|
||
d->index_number = next_index_number;
|
||
d->lineno = lineno;
|
||
if (XSTR (insn, 0)[0])
|
||
d->name = XSTR (insn, 0);
|
||
else
|
||
d->name = 0;
|
||
|
||
/* Build up the list in the same order as the insns are seen
|
||
in the machine description. */
|
||
d->next = 0;
|
||
*idata_end = d;
|
||
idata_end = &d->next;
|
||
|
||
max_opno = -1;
|
||
num_dups = 0;
|
||
memset (d->operand, 0, sizeof (d->operand));
|
||
|
||
/* Scan the operands to get the specified predicates and modes,
|
||
since expand_binop needs to know them. */
|
||
|
||
if (XVEC (insn, 1))
|
||
for (i = 0; i < XVECLEN (insn, 1); i++)
|
||
scan_operands (d, XVECEXP (insn, 1, i), 0, 0);
|
||
|
||
d->n_operands = max_opno + 1;
|
||
d->n_dups = num_dups;
|
||
d->template = 0;
|
||
d->output_format = INSN_OUTPUT_FORMAT_NONE;
|
||
|
||
validate_insn_alternatives (d);
|
||
place_operands (d);
|
||
}
|
||
|
||
/* Process a define_split just read. Assign its code number,
|
||
only for reasons of consistency and to simplify genrecog. */
|
||
|
||
static void
|
||
gen_split (rtx split, int lineno)
|
||
{
|
||
struct data *d = xmalloc (sizeof (struct data));
|
||
int i;
|
||
|
||
d->code_number = next_code_number;
|
||
d->index_number = next_index_number;
|
||
d->lineno = lineno;
|
||
d->name = 0;
|
||
|
||
/* Build up the list in the same order as the insns are seen
|
||
in the machine description. */
|
||
d->next = 0;
|
||
*idata_end = d;
|
||
idata_end = &d->next;
|
||
|
||
max_opno = -1;
|
||
num_dups = 0;
|
||
memset (d->operand, 0, sizeof (d->operand));
|
||
|
||
/* Get the number of operands by scanning all the patterns of the
|
||
split patterns. But ignore all the rest of the information thus
|
||
obtained. */
|
||
for (i = 0; i < XVECLEN (split, 0); i++)
|
||
scan_operands (d, XVECEXP (split, 0, i), 0, 0);
|
||
|
||
d->n_operands = max_opno + 1;
|
||
d->n_dups = 0;
|
||
d->n_alternatives = 0;
|
||
d->template = 0;
|
||
d->output_format = INSN_OUTPUT_FORMAT_NONE;
|
||
|
||
place_operands (d);
|
||
}
|
||
|
||
extern int main (int, char **);
|
||
|
||
int
|
||
main (int argc, char **argv)
|
||
{
|
||
rtx desc;
|
||
|
||
progname = "genoutput";
|
||
|
||
if (argc <= 1)
|
||
fatal ("no input file name");
|
||
|
||
if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
|
||
return (FATAL_EXIT_CODE);
|
||
|
||
output_prologue ();
|
||
next_code_number = 0;
|
||
next_index_number = 0;
|
||
|
||
/* Read the machine description. */
|
||
|
||
while (1)
|
||
{
|
||
int line_no;
|
||
|
||
desc = read_md_rtx (&line_no, &next_code_number);
|
||
if (desc == NULL)
|
||
break;
|
||
|
||
if (GET_CODE (desc) == DEFINE_INSN)
|
||
gen_insn (desc, line_no);
|
||
if (GET_CODE (desc) == DEFINE_PEEPHOLE)
|
||
gen_peephole (desc, line_no);
|
||
if (GET_CODE (desc) == DEFINE_EXPAND)
|
||
gen_expand (desc, line_no);
|
||
if (GET_CODE (desc) == DEFINE_SPLIT
|
||
|| GET_CODE (desc) == DEFINE_PEEPHOLE2)
|
||
gen_split (desc, line_no);
|
||
next_index_number++;
|
||
}
|
||
|
||
printf("\n\n");
|
||
output_operand_data ();
|
||
output_insn_data ();
|
||
output_get_insn_name ();
|
||
|
||
fflush (stdout);
|
||
return (ferror (stdout) != 0 || have_error
|
||
? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
|
||
}
|
||
|
||
/* Return the number of occurrences of character C in string S or
|
||
-1 if S is the null string. */
|
||
|
||
static int
|
||
n_occurrences (int c, const char *s)
|
||
{
|
||
int n = 0;
|
||
|
||
if (s == 0 || *s == '\0')
|
||
return -1;
|
||
|
||
while (*s)
|
||
n += (*s++ == c);
|
||
|
||
return n;
|
||
}
|
||
|
||
/* Remove whitespace in `s' by moving up characters until the end.
|
||
Return a new string. */
|
||
|
||
static const char *
|
||
strip_whitespace (const char *s)
|
||
{
|
||
char *p, *q;
|
||
char ch;
|
||
|
||
if (s == 0)
|
||
return 0;
|
||
|
||
p = q = xmalloc (strlen (s) + 1);
|
||
while ((ch = *s++) != '\0')
|
||
if (! ISSPACE (ch))
|
||
*p++ = ch;
|
||
|
||
*p = '\0';
|
||
return q;
|
||
}
|
||
|
||
/* Verify that DEFAULT_CONSTRAINT_LEN is used properly and not
|
||
tampered with. This isn't bullet-proof, but it should catch
|
||
most genuine mistakes. */
|
||
static void
|
||
check_constraint_len (void)
|
||
{
|
||
const char *p;
|
||
int d;
|
||
|
||
for (p = ",#*+=&%!1234567890"; *p; p++)
|
||
for (d = -9; d < 9; d++)
|
||
if (constraint_len (p, d) != d)
|
||
abort ();
|
||
}
|
||
|
||
static int
|
||
constraint_len (const char *p, int genoutput_default_constraint_len)
|
||
{
|
||
/* Check that we still match defaults.h . First we do a generation-time
|
||
check that fails if the value is not the expected one... */
|
||
if (DEFAULT_CONSTRAINT_LEN (*p, p) != 1)
|
||
abort ();
|
||
/* And now a compile-time check that should give a diagnostic if the
|
||
definition doesn't exactly match. */
|
||
#define DEFAULT_CONSTRAINT_LEN(C,STR) 1
|
||
/* Now re-define DEFAULT_CONSTRAINT_LEN so that we can verify it is
|
||
being used. */
|
||
#undef DEFAULT_CONSTRAINT_LEN
|
||
#define DEFAULT_CONSTRAINT_LEN(C,STR) \
|
||
((C) != *p || STR != p ? -1 : genoutput_default_constraint_len)
|
||
return CONSTRAINT_LEN (*p, p);
|
||
/* And set it back. */
|
||
#undef DEFAULT_CONSTRAINT_LEN
|
||
#define DEFAULT_CONSTRAINT_LEN(C,STR) 1
|
||
}
|