mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-11-24 11:24:05 +08:00
Initial revision
From-SVN: r49
This commit is contained in:
Richard Kenner
parent
32f30c5312
commit
65963943e9
743
gcc/genemit.c
Normal file
743
gcc/genemit.c
Normal file
@ -0,0 +1,743 @@
|
||||
/* Generate code from machine description to emit insns as rtl.
|
||||
Copyright (C) 1987-1991 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GNU CC.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
|
||||
|
||||
#include <stdio.h>
|
||||
#include "config.h"
|
||||
#include "rtl.h"
|
||||
#include "obstack.h"
|
||||
|
||||
static struct obstack obstack;
|
||||
struct obstack *rtl_obstack = &obstack;
|
||||
|
||||
#define obstack_chunk_alloc xmalloc
|
||||
#define obstack_chunk_free free
|
||||
|
||||
extern void free ();
|
||||
|
||||
char *xmalloc ();
|
||||
static void fatal ();
|
||||
void fancy_abort ();
|
||||
|
||||
static int max_opno;
|
||||
static int max_dup_opno;
|
||||
static int register_constraints;
|
||||
static int insn_code_number;
|
||||
static int insn_index_number;
|
||||
|
||||
/* Data structure for recording the patterns of insns that have CLOBBERs.
|
||||
We use this to output a function that adds these CLOBBERs to a
|
||||
previously-allocated PARALLEL expression. */
|
||||
|
||||
struct clobber_pat
|
||||
{
|
||||
int code_number; /* Counts only insns. */
|
||||
rtx pattern;
|
||||
int first_clobber;
|
||||
struct clobber_pat *next;
|
||||
} *clobber_list;
|
||||
|
||||
static void
|
||||
max_operand_1 (x)
|
||||
rtx x;
|
||||
{
|
||||
register RTX_CODE code;
|
||||
register int i;
|
||||
register int len;
|
||||
register char *fmt;
|
||||
|
||||
if (x == 0)
|
||||
return;
|
||||
|
||||
code = GET_CODE (x);
|
||||
|
||||
if (code == MATCH_OPERAND && XSTR (x, 2) != 0 && *XSTR (x, 2) != '\0')
|
||||
register_constraints = 1;
|
||||
if (code == MATCH_SCRATCH && XSTR (x, 1) != 0 && *XSTR (x, 1) != '\0')
|
||||
register_constraints = 1;
|
||||
if (code == MATCH_OPERAND || code == MATCH_OPERATOR
|
||||
|| code == MATCH_PARALLEL)
|
||||
max_opno = MAX (max_opno, XINT (x, 0));
|
||||
if (code == MATCH_DUP || code == MATCH_OP_DUP)
|
||||
max_dup_opno = MAX (max_dup_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
|
||||
max_operand_vec (insn, arg)
|
||||
rtx insn;
|
||||
int arg;
|
||||
{
|
||||
register int len = XVECLEN (insn, arg);
|
||||
register int i;
|
||||
|
||||
max_opno = -1;
|
||||
max_dup_opno = -1;
|
||||
|
||||
for (i = 0; i < len; i++)
|
||||
max_operand_1 (XVECEXP (insn, arg, i));
|
||||
|
||||
return max_opno + 1;
|
||||
}
|
||||
|
||||
static void
|
||||
print_code (code)
|
||||
RTX_CODE code;
|
||||
{
|
||||
register char *p1;
|
||||
for (p1 = GET_RTX_NAME (code); *p1; p1++)
|
||||
{
|
||||
if (*p1 >= 'a' && *p1 <= 'z')
|
||||
putchar (*p1 + 'A' - 'a');
|
||||
else
|
||||
putchar (*p1);
|
||||
}
|
||||
}
|
||||
|
||||
/* Print a C expression to construct an RTX just like X,
|
||||
substituting any operand references appearing within. */
|
||||
|
||||
static void
|
||||
gen_exp (x)
|
||||
rtx x;
|
||||
{
|
||||
register RTX_CODE code;
|
||||
register int i;
|
||||
register int len;
|
||||
register char *fmt;
|
||||
|
||||
if (x == 0)
|
||||
{
|
||||
printf ("0");
|
||||
return;
|
||||
}
|
||||
|
||||
code = GET_CODE (x);
|
||||
|
||||
switch (code)
|
||||
{
|
||||
case MATCH_OPERAND:
|
||||
case MATCH_DUP:
|
||||
printf ("operand%d", XINT (x, 0));
|
||||
return;
|
||||
|
||||
case MATCH_OP_DUP:
|
||||
printf ("gen_rtx (GET_CODE (operand%d), GET_MODE (operand%d)",
|
||||
XINT (x, 0), XINT (x, 0));
|
||||
for (i = 0; i < XVECLEN (x, 1); i++)
|
||||
{
|
||||
printf (",\n\t\t");
|
||||
gen_exp (XVECEXP (x, 1, i));
|
||||
}
|
||||
printf (")");
|
||||
return;
|
||||
|
||||
case MATCH_OPERATOR:
|
||||
printf ("gen_rtx (GET_CODE (operand%d)", XINT (x, 0));
|
||||
printf (", %smode", GET_MODE_NAME (GET_MODE (x)));
|
||||
for (i = 0; i < XVECLEN (x, 2); i++)
|
||||
{
|
||||
printf (",\n\t\t");
|
||||
gen_exp (XVECEXP (x, 2, i));
|
||||
}
|
||||
printf (")");
|
||||
return;
|
||||
|
||||
case MATCH_PARALLEL:
|
||||
printf ("operand%d", XINT (x, 0));
|
||||
return;
|
||||
|
||||
case MATCH_SCRATCH:
|
||||
printf ("gen_rtx (SCRATCH, %smode, 0)", GET_MODE_NAME (GET_MODE (x)));
|
||||
return;
|
||||
|
||||
case ADDRESS:
|
||||
fatal ("ADDRESS expression code used in named instruction pattern");
|
||||
|
||||
case PC:
|
||||
printf ("pc_rtx");
|
||||
return;
|
||||
|
||||
case CC0:
|
||||
printf ("cc0_rtx");
|
||||
return;
|
||||
|
||||
case CONST_INT:
|
||||
if (INTVAL (x) == 0)
|
||||
{
|
||||
printf ("const0_rtx");
|
||||
return;
|
||||
}
|
||||
if (INTVAL (x) == 1)
|
||||
{
|
||||
printf ("const1_rtx");
|
||||
return;
|
||||
}
|
||||
if (INTVAL (x) == -1)
|
||||
{
|
||||
printf ("constm1_rtx");
|
||||
return;
|
||||
}
|
||||
if (INTVAL (x) == STORE_FLAG_VALUE)
|
||||
{
|
||||
printf ("const_true_rtx");
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
printf ("gen_rtx (");
|
||||
print_code (code);
|
||||
printf (", %smode", GET_MODE_NAME (GET_MODE (x)));
|
||||
|
||||
fmt = GET_RTX_FORMAT (code);
|
||||
len = GET_RTX_LENGTH (code);
|
||||
for (i = 0; i < len; i++)
|
||||
{
|
||||
if (fmt[i] == '0')
|
||||
break;
|
||||
printf (", ");
|
||||
if (fmt[i] == 'e' || fmt[i] == 'u')
|
||||
gen_exp (XEXP (x, i));
|
||||
else if (fmt[i] == 'i')
|
||||
printf ("%u", (unsigned) XINT (x, i));
|
||||
else if (fmt[i] == 's')
|
||||
printf ("\"%s\"", XSTR (x, i));
|
||||
else if (fmt[i] == 'E')
|
||||
{
|
||||
int j;
|
||||
printf ("gen_rtvec (%d", XVECLEN (x, i));
|
||||
for (j = 0; j < XVECLEN (x, i); j++)
|
||||
{
|
||||
printf (",\n\t\t");
|
||||
gen_exp (XVECEXP (x, i, j));
|
||||
}
|
||||
printf (")");
|
||||
}
|
||||
else
|
||||
abort ();
|
||||
}
|
||||
printf (")");
|
||||
}
|
||||
|
||||
/* Generate the `gen_...' function for a DEFINE_INSN. */
|
||||
|
||||
static void
|
||||
gen_insn (insn)
|
||||
rtx insn;
|
||||
{
|
||||
int operands;
|
||||
register int i;
|
||||
|
||||
/* See if the pattern for this insn ends with a group of CLOBBERs of (hard)
|
||||
registers or MATCH_SCRATCHes. If so, store away the information for
|
||||
later. */
|
||||
|
||||
if (XVEC (insn, 1))
|
||||
{
|
||||
for (i = XVECLEN (insn, 1) - 1; i > 0; i--)
|
||||
if (GET_CODE (XVECEXP (insn, 1, i)) != CLOBBER
|
||||
|| (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != REG
|
||||
&& GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != MATCH_SCRATCH))
|
||||
break;
|
||||
|
||||
if (i != XVECLEN (insn, 1) - 1)
|
||||
{
|
||||
register struct clobber_pat *new
|
||||
= (struct clobber_pat *) xmalloc (sizeof (struct clobber_pat));
|
||||
|
||||
new->code_number = insn_code_number;
|
||||
new->pattern = insn;
|
||||
new->first_clobber = i + 1;
|
||||
new->next = clobber_list;
|
||||
clobber_list = new;
|
||||
}
|
||||
}
|
||||
|
||||
/* Don't mention instructions whose names are the null string.
|
||||
They are in the machine description just to be recognized. */
|
||||
if (strlen (XSTR (insn, 0)) == 0)
|
||||
return;
|
||||
|
||||
/* Find out how many operands this function has,
|
||||
and also whether any of them have register constraints. */
|
||||
register_constraints = 0;
|
||||
operands = max_operand_vec (insn, 1);
|
||||
if (max_dup_opno >= operands)
|
||||
fatal ("match_dup operand number has no match_operand");
|
||||
|
||||
/* Output the function name and argument declarations. */
|
||||
printf ("rtx\ngen_%s (", XSTR (insn, 0));
|
||||
for (i = 0; i < operands; i++)
|
||||
printf (i ? ", operand%d" : "operand%d", i);
|
||||
printf (")\n");
|
||||
for (i = 0; i < operands; i++)
|
||||
printf (" rtx operand%d;\n", i);
|
||||
printf ("{\n");
|
||||
|
||||
/* Output code to construct and return the rtl for the instruction body */
|
||||
|
||||
if (XVECLEN (insn, 1) == 1)
|
||||
{
|
||||
printf (" return ");
|
||||
gen_exp (XVECEXP (insn, 1, 0));
|
||||
printf (";\n}\n\n");
|
||||
}
|
||||
else
|
||||
{
|
||||
printf (" return gen_rtx (PARALLEL, VOIDmode, gen_rtvec (%d", XVECLEN (insn, 1));
|
||||
for (i = 0; i < XVECLEN (insn, 1); i++)
|
||||
{
|
||||
printf (",\n\t\t");
|
||||
gen_exp (XVECEXP (insn, 1, i));
|
||||
}
|
||||
printf ("));\n}\n\n");
|
||||
}
|
||||
}
|
||||
|
||||
/* Generate the `gen_...' function for a DEFINE_EXPAND. */
|
||||
|
||||
static void
|
||||
gen_expand (expand)
|
||||
rtx expand;
|
||||
{
|
||||
int operands;
|
||||
register int i;
|
||||
|
||||
if (strlen (XSTR (expand, 0)) == 0)
|
||||
fatal ("define_expand lacks a name");
|
||||
if (XVEC (expand, 1) == 0)
|
||||
fatal ("define_expand for %s lacks a pattern", XSTR (expand, 0));
|
||||
|
||||
/* Find out how many operands this function has,
|
||||
and also whether any of them have register constraints. */
|
||||
register_constraints = 0;
|
||||
|
||||
operands = max_operand_vec (expand, 1);
|
||||
|
||||
/* Output the function name and argument declarations. */
|
||||
printf ("rtx\ngen_%s (", XSTR (expand, 0));
|
||||
for (i = 0; i < operands; i++)
|
||||
printf (i ? ", operand%d" : "operand%d", i);
|
||||
printf (")\n");
|
||||
for (i = 0; i < operands; i++)
|
||||
printf (" rtx operand%d;\n", i);
|
||||
printf ("{\n");
|
||||
|
||||
/* If we don't have any C code to write, only one insn is being written,
|
||||
and no MATCH_DUPs are present, we can just return the desired insn
|
||||
like we do for a DEFINE_INSN. This saves memory. */
|
||||
if ((XSTR (expand, 3) == 0 || *XSTR (expand, 3) == '\0')
|
||||
&& operands > max_dup_opno
|
||||
&& XVECLEN (expand, 1) == 1)
|
||||
{
|
||||
printf (" return ");
|
||||
gen_exp (XVECEXP (expand, 1, 0));
|
||||
printf (";\n}\n\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* For each operand referred to only with MATCH_DUPs,
|
||||
make a local variable. */
|
||||
for (i = operands; i <= max_dup_opno; i++)
|
||||
printf (" rtx operand%d;\n", i);
|
||||
if (operands > 0 || max_dup_opno >= 0)
|
||||
printf (" rtx operands[%d];\n", MAX (operands, max_dup_opno + 1));
|
||||
printf (" rtx _val = 0;\n");
|
||||
printf (" start_sequence ();\n");
|
||||
|
||||
/* The fourth operand of DEFINE_EXPAND is some code to be executed
|
||||
before the actual construction.
|
||||
This code expects to refer to `operands'
|
||||
just as the output-code in a DEFINE_INSN does,
|
||||
but here `operands' is an automatic array.
|
||||
So copy the operand values there before executing it. */
|
||||
if (XSTR (expand, 3) && *XSTR (expand, 3))
|
||||
{
|
||||
/* Output code to copy the arguments into `operands'. */
|
||||
for (i = 0; i < operands; i++)
|
||||
printf (" operands[%d] = operand%d;\n", i, i);
|
||||
|
||||
/* Output the special code to be executed before the sequence
|
||||
is generated. */
|
||||
printf ("%s\n", XSTR (expand, 3));
|
||||
|
||||
/* Output code to copy the arguments back out of `operands'
|
||||
(unless we aren't going to use them at all). */
|
||||
if (XVEC (expand, 1) != 0)
|
||||
{
|
||||
for (i = 0; i < operands; i++)
|
||||
printf (" operand%d = operands[%d];\n", i, i);
|
||||
for (; i <= max_dup_opno; i++)
|
||||
printf (" operand%d = operands[%d];\n", i, i);
|
||||
}
|
||||
}
|
||||
|
||||
/* Output code to construct the rtl for the instruction bodies.
|
||||
Use emit_insn to add them to the sequence being accumulated.
|
||||
But don't do this if the user's code has set `no_more' nonzero. */
|
||||
|
||||
for (i = 0; i < XVECLEN (expand, 1); i++)
|
||||
{
|
||||
rtx next = XVECEXP (expand, 1, i);
|
||||
if ((GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC)
|
||||
|| (GET_CODE (next) == PARALLEL
|
||||
&& GET_CODE (XVECEXP (next, 0, 0)) == SET
|
||||
&& GET_CODE (SET_DEST (XVECEXP (next, 0, 0))) == PC)
|
||||
|| GET_CODE (next) == RETURN)
|
||||
printf (" emit_jump_insn (");
|
||||
else if ((GET_CODE (next) == SET && GET_CODE (SET_SRC (next)) == CALL)
|
||||
|| GET_CODE (next) == CALL
|
||||
|| (GET_CODE (next) == PARALLEL
|
||||
&& GET_CODE (XVECEXP (next, 0, 0)) == SET
|
||||
&& GET_CODE (SET_SRC (XVECEXP (next, 0, 0))) == CALL)
|
||||
|| (GET_CODE (next) == PARALLEL
|
||||
&& GET_CODE (XVECEXP (next, 0, 0)) == CALL))
|
||||
printf (" emit_call_insn (");
|
||||
else if (GET_CODE (next) == CODE_LABEL)
|
||||
printf (" emit_label (");
|
||||
else if (GET_CODE (next) == MATCH_OPERAND
|
||||
|| GET_CODE (next) == MATCH_OPERATOR
|
||||
|| GET_CODE (next) == MATCH_PARALLEL
|
||||
|| GET_CODE (next) == MATCH_OP_DUP
|
||||
|| GET_CODE (next) == MATCH_DUP
|
||||
|| GET_CODE (next) == PARALLEL)
|
||||
printf (" emit (");
|
||||
else
|
||||
printf (" emit_insn (");
|
||||
gen_exp (next);
|
||||
printf (");\n");
|
||||
if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
|
||||
&& GET_CODE (SET_SRC (next)) == LABEL_REF)
|
||||
printf (" emit_barrier ();");
|
||||
}
|
||||
|
||||
/* Call `gen_sequence' to make a SEQUENCE out of all the
|
||||
insns emitted within this gen_... function. */
|
||||
|
||||
printf (" _done:\n");
|
||||
printf (" _val = gen_sequence ();\n");
|
||||
printf (" _fail:\n");
|
||||
printf (" end_sequence ();\n");
|
||||
printf (" return _val;\n}\n\n");
|
||||
}
|
||||
|
||||
/* Like gen_expand, but generates a SEQUENCE. */
|
||||
static void
|
||||
gen_split (split)
|
||||
rtx split;
|
||||
{
|
||||
register int i;
|
||||
int operands;
|
||||
|
||||
if (XVEC (split, 0) == 0)
|
||||
fatal ("define_split %d lacks a pattern", insn_index_number);
|
||||
else if (XVEC (split, 2) == 0)
|
||||
fatal ("define_split %d lacks a replacement pattern", insn_index_number);
|
||||
|
||||
/* Find out how many operands this function has. */
|
||||
|
||||
max_operand_vec (split, 2);
|
||||
operands = MAX (max_opno, max_dup_opno) + 1;
|
||||
|
||||
/* Output the function name and argument declarations. */
|
||||
printf ("rtx\ngen_split_%d (operands)\n rtx *operands;\n",
|
||||
insn_code_number);
|
||||
printf ("{\n");
|
||||
|
||||
/* Declare all local variables. */
|
||||
for (i = 0; i < operands; i++)
|
||||
printf (" rtx operand%d;\n", i);
|
||||
printf (" rtx _val;\n");
|
||||
printf (" start_sequence ();\n");
|
||||
|
||||
/* The fourth operand of DEFINE_SPLIT is some code to be executed
|
||||
before the actual construction. */
|
||||
|
||||
if (XSTR (split, 3))
|
||||
printf ("%s\n", XSTR (split, 3));
|
||||
|
||||
/* Output code to copy the arguments back out of `operands' */
|
||||
for (i = 0; i < operands; i++)
|
||||
printf (" operand%d = operands[%d];\n", i, i);
|
||||
|
||||
/* Output code to construct the rtl for the instruction bodies.
|
||||
Use emit_insn to add them to the sequence being accumulated.
|
||||
But don't do this if the user's code has set `no_more' nonzero. */
|
||||
|
||||
for (i = 0; i < XVECLEN (split, 2); i++)
|
||||
{
|
||||
rtx next = XVECEXP (split, 2, i);
|
||||
if ((GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC)
|
||||
|| (GET_CODE (next) == PARALLEL
|
||||
&& GET_CODE (XVECEXP (next, 0, 0)) == SET
|
||||
&& GET_CODE (SET_DEST (XVECEXP (next, 0, 0))) == PC)
|
||||
|| GET_CODE (next) == RETURN)
|
||||
printf (" emit_jump_insn (");
|
||||
else if ((GET_CODE (next) == SET && GET_CODE (SET_SRC (next)) == CALL)
|
||||
|| GET_CODE (next) == CALL
|
||||
|| (GET_CODE (next) == PARALLEL
|
||||
&& GET_CODE (XVECEXP (next, 0, 0)) == SET
|
||||
&& GET_CODE (SET_SRC (XVECEXP (next, 0, 0))) == CALL)
|
||||
|| (GET_CODE (next) == PARALLEL
|
||||
&& GET_CODE (XVECEXP (next, 0, 0)) == CALL))
|
||||
printf (" emit_call_insn (");
|
||||
else if (GET_CODE (next) == CODE_LABEL)
|
||||
printf (" emit_label (");
|
||||
else if (GET_CODE (next) == MATCH_OPERAND
|
||||
|| GET_CODE (next) == MATCH_OPERATOR
|
||||
|| GET_CODE (next) == MATCH_PARALLEL
|
||||
|| GET_CODE (next) == MATCH_OP_DUP
|
||||
|| GET_CODE (next) == MATCH_DUP
|
||||
|| GET_CODE (next) == PARALLEL)
|
||||
printf (" emit (");
|
||||
else
|
||||
printf (" emit_insn (");
|
||||
gen_exp (next);
|
||||
printf (");\n");
|
||||
if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
|
||||
&& GET_CODE (SET_SRC (next)) == LABEL_REF)
|
||||
printf (" emit_barrier ();");
|
||||
}
|
||||
|
||||
/* Call `gen_sequence' to make a SEQUENCE out of all the
|
||||
insns emitted within this gen_... function. */
|
||||
|
||||
printf (" _done:\n");
|
||||
printf (" _val = gen_sequence ();\n");
|
||||
printf (" _fail:\n");
|
||||
printf (" end_sequence ();\n");
|
||||
printf (" return _val;\n}\n\n");
|
||||
}
|
||||
|
||||
/* Write a function, `add_clobbers', that is given a PARALLEL of sufficient
|
||||
size for the insn and an INSN_CODE, and inserts the required CLOBBERs at
|
||||
the end of the vector. */
|
||||
|
||||
static void
|
||||
output_add_clobbers ()
|
||||
{
|
||||
struct clobber_pat *clobber;
|
||||
int i;
|
||||
|
||||
printf ("\n\nvoid\nadd_clobbers (pattern, insn_code_number)\n");
|
||||
printf (" rtx pattern;\n int insn_code_number;\n");
|
||||
printf ("{\n");
|
||||
printf (" int i;\n\n");
|
||||
printf (" switch (insn_code_number)\n");
|
||||
printf (" {\n");
|
||||
|
||||
for (clobber = clobber_list; clobber; clobber = clobber->next)
|
||||
{
|
||||
printf (" case %d:\n", clobber->code_number);
|
||||
|
||||
for (i = clobber->first_clobber; i < XVECLEN (clobber->pattern, 1); i++)
|
||||
{
|
||||
printf (" XVECEXP (pattern, 0, %d) = ", i);
|
||||
gen_exp (XVECEXP (clobber->pattern, 1, i));
|
||||
printf (";\n");
|
||||
}
|
||||
|
||||
printf (" break;\n");
|
||||
}
|
||||
|
||||
printf (" default:\n");
|
||||
printf (" abort ();\n");
|
||||
printf (" }\n");
|
||||
printf ("}\n");
|
||||
}
|
||||
|
||||
/* Write a function, init_mov_optab, that is called to set up entries
|
||||
in mov_optab for EXTRA_CC_MODES. */
|
||||
|
||||
static void
|
||||
output_init_mov_optab ()
|
||||
{
|
||||
#ifdef EXTRA_CC_NAMES
|
||||
static char *cc_names[] = { EXTRA_CC_NAMES };
|
||||
char *p;
|
||||
int i;
|
||||
|
||||
printf ("\nvoid\ninit_mov_optab ()\n{\n");
|
||||
|
||||
for (i = 0; i < sizeof cc_names / sizeof cc_names[0]; i++)
|
||||
{
|
||||
printf ("#ifdef HAVE_mov");
|
||||
for (p = cc_names[i]; *p; p++)
|
||||
printf ("%c", *p >= 'A' && *p <= 'Z' ? *p - 'A' + 'a' : *p);
|
||||
printf ("\n");
|
||||
printf (" if (HAVE_mov");
|
||||
for (p = cc_names[i]; *p; p++)
|
||||
printf ("%c", *p >= 'A' && *p <= 'Z' ? *p - 'A' + 'a' : *p);
|
||||
printf (")\n");
|
||||
printf (" mov_optab->handlers[(int) %smode].insn_code = CODE_FOR_mov",
|
||||
cc_names[i]);
|
||||
for (p = cc_names[i]; *p; p++)
|
||||
printf ("%c", *p >= 'A' && *p <= 'Z' ? *p - 'A' + 'a' : *p);
|
||||
printf (";\n#endif\n");
|
||||
}
|
||||
|
||||
printf ("}\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
char *
|
||||
xmalloc (size)
|
||||
unsigned size;
|
||||
{
|
||||
register char *val = (char *) malloc (size);
|
||||
|
||||
if (val == 0)
|
||||
fatal ("virtual memory exhausted");
|
||||
|
||||
return val;
|
||||
}
|
||||
|
||||
char *
|
||||
xrealloc (ptr, size)
|
||||
char *ptr;
|
||||
unsigned size;
|
||||
{
|
||||
char *result = (char *) realloc (ptr, size);
|
||||
if (!result)
|
||||
fatal ("virtual memory exhausted");
|
||||
return result;
|
||||
}
|
||||
|
||||
static void
|
||||
fatal (s, a1, a2)
|
||||
char *s;
|
||||
{
|
||||
fprintf (stderr, "genemit: ");
|
||||
fprintf (stderr, s, a1, a2);
|
||||
fprintf (stderr, "\n");
|
||||
exit (FATAL_EXIT_CODE);
|
||||
}
|
||||
|
||||
/* More 'friendly' abort that prints the line and file.
|
||||
config.h can #define abort fancy_abort if you like that sort of thing. */
|
||||
|
||||
void
|
||||
fancy_abort ()
|
||||
{
|
||||
fatal ("Internal gcc abort.");
|
||||
}
|
||||
|
||||
int
|
||||
main (argc, argv)
|
||||
int argc;
|
||||
char **argv;
|
||||
{
|
||||
rtx desc;
|
||||
FILE *infile;
|
||||
extern rtx read_rtx ();
|
||||
register int c;
|
||||
|
||||
obstack_init (rtl_obstack);
|
||||
|
||||
if (argc <= 1)
|
||||
fatal ("No input file name.");
|
||||
|
||||
infile = fopen (argv[1], "r");
|
||||
if (infile == 0)
|
||||
{
|
||||
perror (argv[1]);
|
||||
exit (FATAL_EXIT_CODE);
|
||||
}
|
||||
|
||||
init_rtl ();
|
||||
|
||||
/* Assign sequential codes to all entries in the machine description
|
||||
in parallel with the tables in insn-output.c. */
|
||||
|
||||
insn_code_number = 0;
|
||||
insn_index_number = 0;
|
||||
|
||||
printf ("/* Generated automatically by the program `genemit'\n\
|
||||
from the machine description file `md'. */\n\n");
|
||||
|
||||
printf ("#include \"config.h\"\n");
|
||||
printf ("#include \"rtl.h\"\n");
|
||||
printf ("#include \"expr.h\"\n");
|
||||
printf ("#include \"real.h\"\n");
|
||||
printf ("#include \"output.h\"\n");
|
||||
printf ("#include \"insn-config.h\"\n\n");
|
||||
printf ("#include \"insn-flags.h\"\n\n");
|
||||
printf ("#include \"insn-codes.h\"\n\n");
|
||||
printf ("extern char *insn_operand_constraint[][MAX_RECOG_OPERANDS];\n\n");
|
||||
printf ("extern rtx recog_operand[];\n");
|
||||
printf ("#define operands emit_operand\n\n");
|
||||
printf ("#define FAIL goto _fail\n\n");
|
||||
printf ("#define DONE goto _done\n\n");
|
||||
|
||||
/* Read the machine description. */
|
||||
|
||||
while (1)
|
||||
{
|
||||
c = read_skip_spaces (infile);
|
||||
if (c == EOF)
|
||||
break;
|
||||
ungetc (c, infile);
|
||||
|
||||
desc = read_rtx (infile);
|
||||
if (GET_CODE (desc) == DEFINE_INSN)
|
||||
{
|
||||
gen_insn (desc);
|
||||
++insn_code_number;
|
||||
}
|
||||
if (GET_CODE (desc) == DEFINE_EXPAND)
|
||||
{
|
||||
gen_expand (desc);
|
||||
++insn_code_number;
|
||||
}
|
||||
if (GET_CODE (desc) == DEFINE_SPLIT)
|
||||
{
|
||||
gen_split (desc);
|
||||
++insn_code_number;
|
||||
}
|
||||
if (GET_CODE (desc) == DEFINE_PEEPHOLE)
|
||||
{
|
||||
++insn_code_number;
|
||||
}
|
||||
++insn_index_number;
|
||||
}
|
||||
|
||||
/* Write out the routine to add CLOBBERs to a pattern. */
|
||||
output_add_clobbers ();
|
||||
|
||||
/* Write the routine to initialize mov_optab for the EXTRA_CC_MODES. */
|
||||
output_init_mov_optab ();
|
||||
|
||||
fflush (stdout);
|
||||
exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
|
||||
/* NOTREACHED */
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user