/* Assembler interface for targets using CGEN. -*- C -*-
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/* Assembler interface for targets using CGEN. -*- C -*-
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CGEN: Cpu tools GENerator
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CGEN: Cpu tools GENerator
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THIS FILE IS MACHINE GENERATED WITH CGEN.
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THIS FILE IS MACHINE GENERATED WITH CGEN.
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- the resultant file is machine generated, cgen-asm.in isn't
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- the resultant file is machine generated, cgen-asm.in isn't
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Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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This file is part of the GNU Binutils and GDB, the GNU debugger.
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This file is part of the GNU Binutils and GDB, the GNU debugger.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation, Inc.,
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along with this program; if not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* ??? Eventually more and more of this stuff can go to cpu-independent files.
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/* ??? Eventually more and more of this stuff can go to cpu-independent files.
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Keep that in mind. */
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Keep that in mind. */
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#include "sysdep.h"
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#include "sysdep.h"
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#include <ctype.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdio.h>
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#include "ansidecl.h"
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#include "ansidecl.h"
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#include "bfd.h"
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#include "bfd.h"
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#include "symcat.h"
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#include "symcat.h"
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#include "openrisc-desc.h"
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#include "openrisc-desc.h"
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#include "openrisc-opc.h"
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#include "openrisc-opc.h"
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#include "opintl.h"
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#include "opintl.h"
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#undef min
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#undef min
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#define min(a,b) ((a) < (b) ? (a) : (b))
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#define min(a,b) ((a) < (b) ? (a) : (b))
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#undef max
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#undef max
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#define max(a,b) ((a) > (b) ? (a) : (b))
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#define max(a,b) ((a) > (b) ? (a) : (b))
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static const char * parse_insn_normal
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static const char * parse_insn_normal
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PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *));
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PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *));
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/* -- assembler routines inserted here */
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/* -- assembler routines inserted here */
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/* -- asm.c */
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/* -- asm.c */
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#define CGEN_VERBOSE_ASSEMBLER_ERRORS
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#define CGEN_VERBOSE_ASSEMBLER_ERRORS
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long
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long
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openrisc_sign_extend_16bit (value)
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openrisc_sign_extend_16bit (value)
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long value;
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long value;
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{
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{
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return (long) (short) value;
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return (long) (short) value;
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}
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}
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/* Handle hi(). */
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/* Handle hi(). */
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static const char *
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static const char *
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parse_hi16 (cd, strp, opindex, valuep)
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parse_hi16 (cd, strp, opindex, valuep)
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CGEN_CPU_DESC cd;
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CGEN_CPU_DESC cd;
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const char **strp;
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const char **strp;
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int opindex;
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int opindex;
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unsigned long *valuep;
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unsigned long *valuep;
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{
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{
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const char *errmsg;
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const char *errmsg;
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enum cgen_parse_operand_result result_type;
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enum cgen_parse_operand_result result_type;
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bfd_vma value;
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bfd_vma value;
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if (**strp == '#')
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if (**strp == '#')
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++*strp;
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++*strp;
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if (strncasecmp (*strp, "hi(", 3) == 0)
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if (strncasecmp (*strp, "hi(", 3) == 0)
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{
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{
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*strp += 3;
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*strp += 3;
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#if 0
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#if 0
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errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
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errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
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if (errmsg != NULL)
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if (errmsg != NULL)
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fprintf (stderr, "parse_hi: %s\n", errmsg);
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fprintf (stderr, "parse_hi: %s\n", errmsg);
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if (errmsg != NULL)
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if (errmsg != NULL)
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#endif
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#endif
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errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,
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errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,
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&result_type, &value);
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&result_type, &value);
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if (**strp != ')')
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if (**strp != ')')
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return "missing `)'";
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return "missing `)'";
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++*strp;
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++*strp;
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if (errmsg == NULL
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if (errmsg == NULL
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&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
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&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
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value >>= 16;
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value >>= 16;
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*valuep = (long) (short) value;
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*valuep = (long) (short) value;
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return errmsg;
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return errmsg;
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}
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}
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else
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else
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{
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{
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if (**strp == '-')
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if (**strp == '-')
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errmsg = cgen_parse_signed_integer (cd, strp, opindex, (long *) &value);
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errmsg = cgen_parse_signed_integer (cd, strp, opindex, (long *) &value);
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else
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else
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
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}
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}
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*valuep = (long) (short) (value & 0xffff);
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*valuep = (long) (short) (value & 0xffff);
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return errmsg;
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return errmsg;
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}
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}
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/* Handle lo() */
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/* Handle lo() */
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static const char *
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static const char *
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parse_lo16 (cd, strp, opindex, valuep)
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parse_lo16 (cd, strp, opindex, valuep)
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CGEN_CPU_DESC cd;
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CGEN_CPU_DESC cd;
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const char **strp;
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const char **strp;
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int opindex;
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int opindex;
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unsigned long *valuep;
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unsigned long *valuep;
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{
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{
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const char *errmsg;
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const char *errmsg;
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enum cgen_parse_operand_result result_type;
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enum cgen_parse_operand_result result_type;
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bfd_vma value;
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bfd_vma value;
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if (**strp == '#')
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if (**strp == '#')
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++*strp;
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++*strp;
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if (strncasecmp (*strp, "lo(", 3) == 0)
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if (strncasecmp (*strp, "lo(", 3) == 0)
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{
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{
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*strp += 3;
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*strp += 3;
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#if 0
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#if 0
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errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
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errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
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if (errmsg != NULL)
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if (errmsg != NULL)
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fprintf (stderr, "parse_lo: %s\n", errmsg);
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fprintf (stderr, "parse_lo: %s\n", errmsg);
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if (errmsg != NULL)
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if (errmsg != NULL)
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#endif
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#endif
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errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
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errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
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&result_type, &value);
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&result_type, &value);
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if (**strp != ')')
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if (**strp != ')')
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return "missing `)'";
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return "missing `)'";
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++*strp;
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++*strp;
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if (errmsg == NULL
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if (errmsg == NULL
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&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
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&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
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value &= 0xffff;
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value &= 0xffff;
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*valuep = (long) (short) value;
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*valuep = (long) (short) value;
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return errmsg;
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return errmsg;
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}
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}
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if (**strp == '-')
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if (**strp == '-')
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errmsg = cgen_parse_signed_integer (cd, strp, opindex, (long *) &value);
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errmsg = cgen_parse_signed_integer (cd, strp, opindex, (long *) &value);
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else
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else
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
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*valuep = (long) (short) (value & 0xffff);
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*valuep = (long) (short) (value & 0xffff);
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return errmsg;
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return errmsg;
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}
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}
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/* -- */
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/* -- */
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/* Main entry point for operand parsing.
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/* Main entry point for operand parsing.
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This function is basically just a big switch statement. Earlier versions
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This function is basically just a big switch statement. Earlier versions
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used tables to look up the function to use, but
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used tables to look up the function to use, but
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- if the table contains both assembler and disassembler functions then
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- if the table contains both assembler and disassembler functions then
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the disassembler contains much of the assembler and vice-versa,
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the disassembler contains much of the assembler and vice-versa,
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- there's a lot of inlining possibilities as things grow,
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- there's a lot of inlining possibilities as things grow,
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- using a switch statement avoids the function call overhead.
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- using a switch statement avoids the function call overhead.
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This function could be moved into `parse_insn_normal', but keeping it
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This function could be moved into `parse_insn_normal', but keeping it
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separate makes clear the interface between `parse_insn_normal' and each of
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separate makes clear the interface between `parse_insn_normal' and each of
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the handlers.
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the handlers.
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*/
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*/
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const char *
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const char *
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openrisc_cgen_parse_operand (cd, opindex, strp, fields)
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openrisc_cgen_parse_operand (cd, opindex, strp, fields)
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CGEN_CPU_DESC cd;
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CGEN_CPU_DESC cd;
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int opindex;
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int opindex;
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const char ** strp;
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const char ** strp;
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CGEN_FIELDS * fields;
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CGEN_FIELDS * fields;
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{
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{
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const char * errmsg = NULL;
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const char * errmsg = NULL;
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/* Used by scalar operands that still need to be parsed. */
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/* Used by scalar operands that still need to be parsed. */
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long junk;
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long junk;
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switch (opindex)
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switch (opindex)
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{
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{
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case OPENRISC_OPERAND_ABS_26 :
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case OPENRISC_OPERAND_ABS_26 :
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{
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{
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bfd_vma value;
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bfd_vma value;
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errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_ABS_26, 0, NULL, & value);
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errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_ABS_26, 0, NULL, & value);
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fields->f_abs26 = value;
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fields->f_abs26 = value;
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}
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}
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break;
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break;
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case OPENRISC_OPERAND_DISP_26 :
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case OPENRISC_OPERAND_DISP_26 :
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{
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{
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bfd_vma value;
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bfd_vma value;
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errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_DISP_26, 0, NULL, & value);
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errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_DISP_26, 0, NULL, & value);
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fields->f_disp26 = value;
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fields->f_disp26 = value;
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}
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}
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break;
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break;
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case OPENRISC_OPERAND_HI16 :
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case OPENRISC_OPERAND_HI16 :
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errmsg = parse_hi16 (cd, strp, OPENRISC_OPERAND_HI16, &fields->f_simm16);
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errmsg = parse_hi16 (cd, strp, OPENRISC_OPERAND_HI16, &fields->f_simm16);
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break;
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break;
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case OPENRISC_OPERAND_LO16 :
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case OPENRISC_OPERAND_LO16 :
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errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_LO16, &fields->f_lo16);
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errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_LO16, &fields->f_lo16);
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break;
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break;
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case OPENRISC_OPERAND_OP_F_23 :
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case OPENRISC_OPERAND_OP_F_23 :
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errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_23, &fields->f_op4);
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errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_23, &fields->f_op4);
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break;
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break;
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case OPENRISC_OPERAND_OP_F_3 :
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case OPENRISC_OPERAND_OP_F_3 :
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errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_3, &fields->f_op5);
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errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_3, &fields->f_op5);
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break;
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break;
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case OPENRISC_OPERAND_RA :
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case OPENRISC_OPERAND_RA :
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errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r2);
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errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r2);
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break;
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break;
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case OPENRISC_OPERAND_RB :
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case OPENRISC_OPERAND_RB :
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errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r3);
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errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r3);
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break;
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break;
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case OPENRISC_OPERAND_RD :
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case OPENRISC_OPERAND_RD :
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errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r1);
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errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r1);
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break;
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break;
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case OPENRISC_OPERAND_SIMM_16 :
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case OPENRISC_OPERAND_SIMM_16 :
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errmsg = cgen_parse_signed_integer (cd, strp, OPENRISC_OPERAND_SIMM_16, &fields->f_simm16);
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errmsg = cgen_parse_signed_integer (cd, strp, OPENRISC_OPERAND_SIMM_16, &fields->f_simm16);
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break;
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break;
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case OPENRISC_OPERAND_UI16NC :
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case OPENRISC_OPERAND_UI16NC :
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errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_UI16NC, &fields->f_i16nc);
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errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_UI16NC, &fields->f_i16nc);
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break;
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break;
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case OPENRISC_OPERAND_UIMM_16 :
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case OPENRISC_OPERAND_UIMM_16 :
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errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_16, &fields->f_uimm16);
|
errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_16, &fields->f_uimm16);
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break;
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break;
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case OPENRISC_OPERAND_UIMM_5 :
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case OPENRISC_OPERAND_UIMM_5 :
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errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_5, &fields->f_uimm5);
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errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_5, &fields->f_uimm5);
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break;
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break;
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|
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default :
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default :
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/* xgettext:c-format */
|
/* xgettext:c-format */
|
fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
|
fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
|
abort ();
|
abort ();
|
}
|
}
|
|
|
return errmsg;
|
return errmsg;
|
}
|
}
|
|
|
cgen_parse_fn * const openrisc_cgen_parse_handlers[] =
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cgen_parse_fn * const openrisc_cgen_parse_handlers[] =
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{
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{
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parse_insn_normal,
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parse_insn_normal,
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};
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};
|
|
|
void
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void
|
openrisc_cgen_init_asm (cd)
|
openrisc_cgen_init_asm (cd)
|
CGEN_CPU_DESC cd;
|
CGEN_CPU_DESC cd;
|
{
|
{
|
openrisc_cgen_init_opcode_table (cd);
|
openrisc_cgen_init_opcode_table (cd);
|
openrisc_cgen_init_ibld_table (cd);
|
openrisc_cgen_init_ibld_table (cd);
|
cd->parse_handlers = & openrisc_cgen_parse_handlers[0];
|
cd->parse_handlers = & openrisc_cgen_parse_handlers[0];
|
cd->parse_operand = openrisc_cgen_parse_operand;
|
cd->parse_operand = openrisc_cgen_parse_operand;
|
}
|
}
|
|
|
|
|
/* Default insn parser.
|
/* Default insn parser.
|
|
|
The syntax string is scanned and operands are parsed and stored in FIELDS.
|
The syntax string is scanned and operands are parsed and stored in FIELDS.
|
Relocs are queued as we go via other callbacks.
|
Relocs are queued as we go via other callbacks.
|
|
|
??? Note that this is currently an all-or-nothing parser. If we fail to
|
??? Note that this is currently an all-or-nothing parser. If we fail to
|
parse the instruction, we return 0 and the caller will start over from
|
parse the instruction, we return 0 and the caller will start over from
|
the beginning. Backtracking will be necessary in parsing subexpressions,
|
the beginning. Backtracking will be necessary in parsing subexpressions,
|
but that can be handled there. Not handling backtracking here may get
|
but that can be handled there. Not handling backtracking here may get
|
expensive in the case of the m68k. Deal with later.
|
expensive in the case of the m68k. Deal with later.
|
|
|
Returns NULL for success, an error message for failure.
|
Returns NULL for success, an error message for failure.
|
*/
|
*/
|
|
|
static const char *
|
static const char *
|
parse_insn_normal (cd, insn, strp, fields)
|
parse_insn_normal (cd, insn, strp, fields)
|
CGEN_CPU_DESC cd;
|
CGEN_CPU_DESC cd;
|
const CGEN_INSN *insn;
|
const CGEN_INSN *insn;
|
const char **strp;
|
const char **strp;
|
CGEN_FIELDS *fields;
|
CGEN_FIELDS *fields;
|
{
|
{
|
/* ??? Runtime added insns not handled yet. */
|
/* ??? Runtime added insns not handled yet. */
|
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
const char *str = *strp;
|
const char *str = *strp;
|
const char *errmsg;
|
const char *errmsg;
|
const char *p;
|
const char *p;
|
const CGEN_SYNTAX_CHAR_TYPE * syn;
|
const CGEN_SYNTAX_CHAR_TYPE * syn;
|
#ifdef CGEN_MNEMONIC_OPERANDS
|
#ifdef CGEN_MNEMONIC_OPERANDS
|
/* FIXME: wip */
|
/* FIXME: wip */
|
int past_opcode_p;
|
int past_opcode_p;
|
#endif
|
#endif
|
|
|
/* For now we assume the mnemonic is first (there are no leading operands).
|
/* For now we assume the mnemonic is first (there are no leading operands).
|
We can parse it without needing to set up operand parsing.
|
We can parse it without needing to set up operand parsing.
|
GAS's input scrubber will ensure mnemonics are lowercase, but we may
|
GAS's input scrubber will ensure mnemonics are lowercase, but we may
|
not be called from GAS. */
|
not be called from GAS. */
|
p = CGEN_INSN_MNEMONIC (insn);
|
p = CGEN_INSN_MNEMONIC (insn);
|
while (*p && tolower (*p) == tolower (*str))
|
while (*p && tolower (*p) == tolower (*str))
|
++p, ++str;
|
++p, ++str;
|
|
|
if (* p)
|
if (* p)
|
return _("unrecognized instruction");
|
return _("unrecognized instruction");
|
|
|
#ifndef CGEN_MNEMONIC_OPERANDS
|
#ifndef CGEN_MNEMONIC_OPERANDS
|
if (* str && !isspace (* str))
|
if (* str && !isspace (* str))
|
return _("unrecognized instruction");
|
return _("unrecognized instruction");
|
#endif
|
#endif
|
|
|
CGEN_INIT_PARSE (cd);
|
CGEN_INIT_PARSE (cd);
|
cgen_init_parse_operand (cd);
|
cgen_init_parse_operand (cd);
|
#ifdef CGEN_MNEMONIC_OPERANDS
|
#ifdef CGEN_MNEMONIC_OPERANDS
|
past_opcode_p = 0;
|
past_opcode_p = 0;
|
#endif
|
#endif
|
|
|
/* We don't check for (*str != '\0') here because we want to parse
|
/* We don't check for (*str != '\0') here because we want to parse
|
any trailing fake arguments in the syntax string. */
|
any trailing fake arguments in the syntax string. */
|
syn = CGEN_SYNTAX_STRING (syntax);
|
syn = CGEN_SYNTAX_STRING (syntax);
|
|
|
/* Mnemonics come first for now, ensure valid string. */
|
/* Mnemonics come first for now, ensure valid string. */
|
if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
|
if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
|
abort ();
|
abort ();
|
|
|
++syn;
|
++syn;
|
|
|
while (* syn != 0)
|
while (* syn != 0)
|
{
|
{
|
/* Non operand chars must match exactly. */
|
/* Non operand chars must match exactly. */
|
if (CGEN_SYNTAX_CHAR_P (* syn))
|
if (CGEN_SYNTAX_CHAR_P (* syn))
|
{
|
{
|
/* FIXME: While we allow for non-GAS callers above, we assume the
|
/* FIXME: While we allow for non-GAS callers above, we assume the
|
first char after the mnemonic part is a space. */
|
first char after the mnemonic part is a space. */
|
/* FIXME: We also take inappropriate advantage of the fact that
|
/* FIXME: We also take inappropriate advantage of the fact that
|
GAS's input scrubber will remove extraneous blanks. */
|
GAS's input scrubber will remove extraneous blanks. */
|
if (tolower (*str) == tolower (CGEN_SYNTAX_CHAR (* syn)))
|
if (tolower (*str) == tolower (CGEN_SYNTAX_CHAR (* syn)))
|
{
|
{
|
#ifdef CGEN_MNEMONIC_OPERANDS
|
#ifdef CGEN_MNEMONIC_OPERANDS
|
if (CGEN_SYNTAX_CHAR(* syn) == ' ')
|
if (CGEN_SYNTAX_CHAR(* syn) == ' ')
|
past_opcode_p = 1;
|
past_opcode_p = 1;
|
#endif
|
#endif
|
++ syn;
|
++ syn;
|
++ str;
|
++ str;
|
}
|
}
|
else if (*str)
|
else if (*str)
|
{
|
{
|
/* Syntax char didn't match. Can't be this insn. */
|
/* Syntax char didn't match. Can't be this insn. */
|
static char msg [80];
|
static char msg [80];
|
/* xgettext:c-format */
|
/* xgettext:c-format */
|
sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
|
sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
|
CGEN_SYNTAX_CHAR(*syn), *str);
|
CGEN_SYNTAX_CHAR(*syn), *str);
|
return msg;
|
return msg;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Ran out of input. */
|
/* Ran out of input. */
|
static char msg [80];
|
static char msg [80];
|
/* xgettext:c-format */
|
/* xgettext:c-format */
|
sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
|
sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
|
CGEN_SYNTAX_CHAR(*syn));
|
CGEN_SYNTAX_CHAR(*syn));
|
return msg;
|
return msg;
|
}
|
}
|
continue;
|
continue;
|
}
|
}
|
|
|
/* We have an operand of some sort. */
|
/* We have an operand of some sort. */
|
errmsg = openrisc_cgen_parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
|
errmsg = openrisc_cgen_parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
|
&str, fields);
|
&str, fields);
|
if (errmsg)
|
if (errmsg)
|
return errmsg;
|
return errmsg;
|
|
|
/* Done with this operand, continue with next one. */
|
/* Done with this operand, continue with next one. */
|
++ syn;
|
++ syn;
|
}
|
}
|
|
|
/* If we're at the end of the syntax string, we're done. */
|
/* If we're at the end of the syntax string, we're done. */
|
if (* syn == 0)
|
if (* syn == 0)
|
{
|
{
|
/* FIXME: For the moment we assume a valid `str' can only contain
|
/* FIXME: For the moment we assume a valid `str' can only contain
|
blanks now. IE: We needn't try again with a longer version of
|
blanks now. IE: We needn't try again with a longer version of
|
the insn and it is assumed that longer versions of insns appear
|
the insn and it is assumed that longer versions of insns appear
|
before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
|
before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
|
while (isspace (* str))
|
while (isspace (* str))
|
++ str;
|
++ str;
|
|
|
if (* str != '\0')
|
if (* str != '\0')
|
return _("junk at end of line"); /* FIXME: would like to include `str' */
|
return _("junk at end of line"); /* FIXME: would like to include `str' */
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/* We couldn't parse it. */
|
/* We couldn't parse it. */
|
return _("unrecognized instruction");
|
return _("unrecognized instruction");
|
}
|
}
|
|
|
/* Main entry point.
|
/* Main entry point.
|
This routine is called for each instruction to be assembled.
|
This routine is called for each instruction to be assembled.
|
STR points to the insn to be assembled.
|
STR points to the insn to be assembled.
|
We assume all necessary tables have been initialized.
|
We assume all necessary tables have been initialized.
|
The assembled instruction, less any fixups, is stored in BUF.
|
The assembled instruction, less any fixups, is stored in BUF.
|
Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
|
Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
|
still needs to be converted to target byte order, otherwise BUF is an array
|
still needs to be converted to target byte order, otherwise BUF is an array
|
of bytes in target byte order.
|
of bytes in target byte order.
|
The result is a pointer to the insn's entry in the opcode table,
|
The result is a pointer to the insn's entry in the opcode table,
|
or NULL if an error occured (an error message will have already been
|
or NULL if an error occured (an error message will have already been
|
printed).
|
printed).
|
|
|
Note that when processing (non-alias) macro-insns,
|
Note that when processing (non-alias) macro-insns,
|
this function recurses.
|
this function recurses.
|
|
|
??? It's possible to make this cpu-independent.
|
??? It's possible to make this cpu-independent.
|
One would have to deal with a few minor things.
|
One would have to deal with a few minor things.
|
At this point in time doing so would be more of a curiosity than useful
|
At this point in time doing so would be more of a curiosity than useful
|
[for example this file isn't _that_ big], but keeping the possibility in
|
[for example this file isn't _that_ big], but keeping the possibility in
|
mind helps keep the design clean. */
|
mind helps keep the design clean. */
|
|
|
const CGEN_INSN *
|
const CGEN_INSN *
|
openrisc_cgen_assemble_insn (cd, str, fields, buf, errmsg)
|
openrisc_cgen_assemble_insn (cd, str, fields, buf, errmsg)
|
CGEN_CPU_DESC cd;
|
CGEN_CPU_DESC cd;
|
const char *str;
|
const char *str;
|
CGEN_FIELDS *fields;
|
CGEN_FIELDS *fields;
|
CGEN_INSN_BYTES_PTR buf;
|
CGEN_INSN_BYTES_PTR buf;
|
char **errmsg;
|
char **errmsg;
|
{
|
{
|
const char *start;
|
const char *start;
|
CGEN_INSN_LIST *ilist;
|
CGEN_INSN_LIST *ilist;
|
const char *parse_errmsg = NULL;
|
const char *parse_errmsg = NULL;
|
const char *insert_errmsg = NULL;
|
const char *insert_errmsg = NULL;
|
|
|
/* Skip leading white space. */
|
/* Skip leading white space. */
|
while (isspace (* str))
|
while (isspace (* str))
|
++ str;
|
++ str;
|
|
|
/* The instructions are stored in hashed lists.
|
/* The instructions are stored in hashed lists.
|
Get the first in the list. */
|
Get the first in the list. */
|
ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
|
ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
|
|
|
/* Keep looking until we find a match. */
|
/* Keep looking until we find a match. */
|
|
|
start = str;
|
start = str;
|
for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
|
for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
|
{
|
{
|
const CGEN_INSN *insn = ilist->insn;
|
const CGEN_INSN *insn = ilist->insn;
|
|
|
#ifdef CGEN_VALIDATE_INSN_SUPPORTED
|
#ifdef CGEN_VALIDATE_INSN_SUPPORTED
|
/* not usually needed as unsupported opcodes shouldn't be in the hash lists */
|
/* not usually needed as unsupported opcodes shouldn't be in the hash lists */
|
/* Is this insn supported by the selected cpu? */
|
/* Is this insn supported by the selected cpu? */
|
if (! openrisc_cgen_insn_supported (cd, insn))
|
if (! openrisc_cgen_insn_supported (cd, insn))
|
continue;
|
continue;
|
#endif
|
#endif
|
|
|
/* If the RELAX attribute is set, this is an insn that shouldn't be
|
/* If the RELAX attribute is set, this is an insn that shouldn't be
|
chosen immediately. Instead, it is used during assembler/linker
|
chosen immediately. Instead, it is used during assembler/linker
|
relaxation if possible. */
|
relaxation if possible. */
|
if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAX) != 0)
|
if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAX) != 0)
|
continue;
|
continue;
|
|
|
str = start;
|
str = start;
|
|
|
/* Allow parse/insert handlers to obtain length of insn. */
|
/* Allow parse/insert handlers to obtain length of insn. */
|
CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
|
CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
|
|
|
parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
|
parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
|
if (parse_errmsg != NULL)
|
if (parse_errmsg != NULL)
|
continue;
|
continue;
|
|
|
/* ??? 0 is passed for `pc' */
|
/* ??? 0 is passed for `pc' */
|
insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
|
insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
|
(bfd_vma) 0);
|
(bfd_vma) 0);
|
if (insert_errmsg != NULL)
|
if (insert_errmsg != NULL)
|
continue;
|
continue;
|
|
|
/* It is up to the caller to actually output the insn and any
|
/* It is up to the caller to actually output the insn and any
|
queued relocs. */
|
queued relocs. */
|
return insn;
|
return insn;
|
}
|
}
|
|
|
{
|
{
|
static char errbuf[150];
|
static char errbuf[150];
|
#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
|
#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
|
const char *tmp_errmsg;
|
const char *tmp_errmsg;
|
|
|
/* If requesting verbose error messages, use insert_errmsg.
|
/* If requesting verbose error messages, use insert_errmsg.
|
Failing that, use parse_errmsg */
|
Failing that, use parse_errmsg */
|
tmp_errmsg = (insert_errmsg ? insert_errmsg :
|
tmp_errmsg = (insert_errmsg ? insert_errmsg :
|
parse_errmsg ? parse_errmsg :
|
parse_errmsg ? parse_errmsg :
|
_("unrecognized instruction"));
|
_("unrecognized instruction"));
|
|
|
if (strlen (start) > 50)
|
if (strlen (start) > 50)
|
/* xgettext:c-format */
|
/* xgettext:c-format */
|
sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
|
sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
|
else
|
else
|
/* xgettext:c-format */
|
/* xgettext:c-format */
|
sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
|
sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
|
#else
|
#else
|
if (strlen (start) > 50)
|
if (strlen (start) > 50)
|
/* xgettext:c-format */
|
/* xgettext:c-format */
|
sprintf (errbuf, _("bad instruction `%.50s...'"), start);
|
sprintf (errbuf, _("bad instruction `%.50s...'"), start);
|
else
|
else
|
/* xgettext:c-format */
|
/* xgettext:c-format */
|
sprintf (errbuf, _("bad instruction `%.50s'"), start);
|
sprintf (errbuf, _("bad instruction `%.50s'"), start);
|
#endif
|
#endif
|
|
|
*errmsg = errbuf;
|
*errmsg = errbuf;
|
return NULL;
|
return NULL;
|
}
|
}
|
}
|
}
|
|
|
#if 0 /* This calls back to GAS which we can't do without care. */
|
#if 0 /* This calls back to GAS which we can't do without care. */
|
|
|
/* Record each member of OPVALS in the assembler's symbol table.
|
/* Record each member of OPVALS in the assembler's symbol table.
|
This lets GAS parse registers for us.
|
This lets GAS parse registers for us.
|
??? Interesting idea but not currently used. */
|
??? Interesting idea but not currently used. */
|
|
|
/* Record each member of OPVALS in the assembler's symbol table.
|
/* Record each member of OPVALS in the assembler's symbol table.
|
FIXME: Not currently used. */
|
FIXME: Not currently used. */
|
|
|
void
|
void
|
openrisc_cgen_asm_hash_keywords (cd, opvals)
|
openrisc_cgen_asm_hash_keywords (cd, opvals)
|
CGEN_CPU_DESC cd;
|
CGEN_CPU_DESC cd;
|
CGEN_KEYWORD *opvals;
|
CGEN_KEYWORD *opvals;
|
{
|
{
|
CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL);
|
CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL);
|
const CGEN_KEYWORD_ENTRY * ke;
|
const CGEN_KEYWORD_ENTRY * ke;
|
|
|
while ((ke = cgen_keyword_search_next (& search)) != NULL)
|
while ((ke = cgen_keyword_search_next (& search)) != NULL)
|
{
|
{
|
#if 0 /* Unnecessary, should be done in the search routine. */
|
#if 0 /* Unnecessary, should be done in the search routine. */
|
if (! openrisc_cgen_opval_supported (ke))
|
if (! openrisc_cgen_opval_supported (ke))
|
continue;
|
continue;
|
#endif
|
#endif
|
cgen_asm_record_register (cd, ke->name, ke->value);
|
cgen_asm_record_register (cd, ke->name, ke->value);
|
}
|
}
|
}
|
}
|
|
|
#endif /* 0 */
|
#endif /* 0 */
|
|
|
