1004 lines
29 KiB
C
1004 lines
29 KiB
C
/* Assembler interface for targets using CGEN. -*- C -*-
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CGEN: Cpu tools GENerator
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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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Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2007, 2008, 2010
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Free Software Foundation, Inc.
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This file is part of libopcodes.
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This library 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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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License 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 this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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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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#include "sysdep.h"
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#include <stdio.h>
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#include "ansidecl.h"
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#include "bfd.h"
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#include "symcat.h"
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#include "mt-desc.h"
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#include "mt-opc.h"
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#include "opintl.h"
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#include "xregex.h"
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#include "libiberty.h"
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#include "safe-ctype.h"
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#undef min
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#define min(a,b) ((a) < (b) ? (a) : (b))
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#undef max
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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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(CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
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/* -- assembler routines inserted here. */
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/* -- asm.c */
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/* Range checking for signed numbers. Returns 0 if acceptable
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and 1 if the value is out of bounds for a signed quantity. */
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static int
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signed_out_of_bounds (long val)
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{
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if ((val < -32768) || (val > 32767))
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return 1;
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return 0;
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}
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static const char *
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parse_loopsize (CGEN_CPU_DESC cd,
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const char **strp,
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int opindex,
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void *arg)
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{
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signed long * valuep = (signed long *) arg;
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const char *errmsg;
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bfd_reloc_code_real_type code = BFD_RELOC_NONE;
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enum cgen_parse_operand_result result_type;
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bfd_vma value;
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/* Is it a control transfer instructions? */
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if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_LOOPSIZE)
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{
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code = BFD_RELOC_MT_PCINSN8;
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errmsg = cgen_parse_address (cd, strp, opindex, code,
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& result_type, & value);
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*valuep = value;
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return errmsg;
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}
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abort ();
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}
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static const char *
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parse_imm16 (CGEN_CPU_DESC cd,
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const char **strp,
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int opindex,
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void *arg)
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{
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signed long * valuep = (signed long *) arg;
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const char *errmsg;
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enum cgen_parse_operand_result result_type;
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bfd_reloc_code_real_type code = BFD_RELOC_NONE;
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bfd_vma value;
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/* Is it a control transfer instructions? */
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if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16O)
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{
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code = BFD_RELOC_16_PCREL;
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errmsg = cgen_parse_address (cd, strp, opindex, code,
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& result_type, & value);
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if (errmsg == NULL)
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{
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if (signed_out_of_bounds (value))
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errmsg = _("Operand out of range. Must be between -32768 and 32767.");
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}
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*valuep = value;
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return errmsg;
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}
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/* If it's not a control transfer instruction, then
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we have to check for %OP relocating operators. */
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if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16L)
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;
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else if (strncmp (*strp, "%hi16", 5) == 0)
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{
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*strp += 5;
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code = BFD_RELOC_HI16;
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}
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else if (strncmp (*strp, "%lo16", 5) == 0)
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{
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*strp += 5;
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code = BFD_RELOC_LO16;
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}
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/* If we found a %OP relocating operator, then parse it as an address.
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If not, we need to parse it as an integer, either signed or unsigned
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depending on which operand type we have. */
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if (code != BFD_RELOC_NONE)
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{
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/* %OP relocating operator found. */
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errmsg = cgen_parse_address (cd, strp, opindex, code,
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& result_type, & value);
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if (errmsg == NULL)
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{
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switch (result_type)
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{
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case (CGEN_PARSE_OPERAND_RESULT_NUMBER):
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if (code == BFD_RELOC_HI16)
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value = (value >> 16) & 0xFFFF;
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else if (code == BFD_RELOC_LO16)
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value = value & 0xFFFF;
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else
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errmsg = _("Biiiig Trouble in parse_imm16!");
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break;
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case (CGEN_PARSE_OPERAND_RESULT_QUEUED):
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/* No special processing for this case. */
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break;
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default:
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errmsg = _("The percent-operator's operand is not a symbol");
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break;
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}
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}
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*valuep = value;
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}
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else
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{
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/* Parse hex values like 0xffff as unsigned, and sign extend
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them manually. */
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int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MT_OPERAND_IMM16);
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if ((*strp)[0] == '0'
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&& ((*strp)[1] == 'x' || (*strp)[1] == 'X'))
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parse_signed = 0;
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/* No relocating operator. Parse as an number. */
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if (parse_signed)
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{
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/* Parse as as signed integer. */
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errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
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if (errmsg == NULL)
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{
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#if 0
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/* Manual range checking is needed for the signed case. */
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if (*valuep & 0x8000)
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value = 0xffff0000 | *valuep;
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else
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value = *valuep;
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if (signed_out_of_bounds (value))
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errmsg = _("Operand out of range. Must be between -32768 and 32767.");
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/* Truncate to 16 bits. This is necessary
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because cgen will have sign extended *valuep. */
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*valuep &= 0xFFFF;
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#endif
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}
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}
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else
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{
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/* MT_OPERAND_IMM16Z. Parse as an unsigned integer. */
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, (unsigned long *) valuep);
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if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16
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&& *valuep >= 0x8000
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&& *valuep <= 0xffff)
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*valuep -= 0x10000;
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}
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}
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return errmsg;
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}
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static const char *
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parse_dup (CGEN_CPU_DESC cd,
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const char **strp,
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int opindex,
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unsigned long *valuep)
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{
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const char *errmsg = NULL;
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if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0)
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{
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*strp += 3;
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*valuep = 1;
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}
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else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0)
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{
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*strp += 2;
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*valuep = 0;
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}
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else
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
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return errmsg;
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}
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static const char *
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parse_ball (CGEN_CPU_DESC cd,
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const char **strp,
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int opindex,
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unsigned long *valuep)
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{
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const char *errmsg = NULL;
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if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0)
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{
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*strp += 3;
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*valuep = 1;
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}
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else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0)
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{
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*strp += 3;
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*valuep = 0;
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}
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else
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
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return errmsg;
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}
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static const char *
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parse_xmode (CGEN_CPU_DESC cd,
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const char **strp,
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int opindex,
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unsigned long *valuep)
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{
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const char *errmsg = NULL;
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if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0)
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{
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*strp += 2;
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*valuep = 1;
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}
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else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0)
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{
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*strp += 2;
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*valuep = 0;
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}
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else
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
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return errmsg;
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}
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static const char *
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parse_rc (CGEN_CPU_DESC cd,
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const char **strp,
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int opindex,
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unsigned long *valuep)
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{
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const char *errmsg = NULL;
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if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0)
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{
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*strp += 1;
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*valuep = 1;
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}
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else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0)
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{
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*strp += 1;
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*valuep = 0;
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}
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else
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
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return errmsg;
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}
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static const char *
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parse_cbrb (CGEN_CPU_DESC cd,
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const char **strp,
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int opindex,
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unsigned long *valuep)
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{
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const char *errmsg = NULL;
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if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0)
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{
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*strp += 2;
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*valuep = 1;
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}
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else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0)
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{
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*strp += 2;
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*valuep = 0;
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}
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else
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
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return errmsg;
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}
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static const char *
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parse_rbbc (CGEN_CPU_DESC cd,
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const char **strp,
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int opindex,
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unsigned long *valuep)
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{
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const char *errmsg = NULL;
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if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0)
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{
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*strp += 2;
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*valuep = 0;
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}
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else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0)
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{
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*strp += 3;
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*valuep = 1;
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}
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else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0)
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{
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*strp += 3;
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*valuep = 2;
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}
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else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0)
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{
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*strp += 2;
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*valuep = 3;
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}
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else
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
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return errmsg;
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}
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static const char *
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parse_type (CGEN_CPU_DESC cd,
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const char **strp,
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int opindex,
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unsigned long *valuep)
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{
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const char *errmsg = NULL;
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if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0)
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{
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*strp += 3;
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*valuep = 0;
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}
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else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0)
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{
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*strp += 4;
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*valuep = 1;
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}
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else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0)
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{
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*strp += 2;
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*valuep = 2;
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}
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else
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errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
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if ((errmsg == NULL) && (*valuep == 3))
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errmsg = _("invalid operand. type may have values 0,1,2 only.");
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return errmsg;
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}
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/* -- dis.c */
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const char * mt_cgen_parse_operand
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(CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
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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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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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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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- 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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separate makes clear the interface between `parse_insn_normal' and each of
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the handlers. */
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const char *
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mt_cgen_parse_operand (CGEN_CPU_DESC cd,
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int opindex,
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const char ** strp,
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CGEN_FIELDS * fields)
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{
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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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long junk ATTRIBUTE_UNUSED;
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switch (opindex)
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{
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case MT_OPERAND_A23 :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_A23, (unsigned long *) (& fields->f_a23));
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break;
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case MT_OPERAND_BALL :
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errmsg = parse_ball (cd, strp, MT_OPERAND_BALL, (unsigned long *) (& fields->f_ball));
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break;
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case MT_OPERAND_BALL2 :
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errmsg = parse_ball (cd, strp, MT_OPERAND_BALL2, (unsigned long *) (& fields->f_ball2));
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break;
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case MT_OPERAND_BANKADDR :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BANKADDR, (unsigned long *) (& fields->f_bankaddr));
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break;
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case MT_OPERAND_BRC :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC, (unsigned long *) (& fields->f_brc));
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break;
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case MT_OPERAND_BRC2 :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC2, (unsigned long *) (& fields->f_brc2));
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break;
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case MT_OPERAND_CB1INCR :
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errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB1INCR, (long *) (& fields->f_cb1incr));
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break;
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case MT_OPERAND_CB1SEL :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB1SEL, (unsigned long *) (& fields->f_cb1sel));
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break;
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case MT_OPERAND_CB2INCR :
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errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB2INCR, (long *) (& fields->f_cb2incr));
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break;
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case MT_OPERAND_CB2SEL :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB2SEL, (unsigned long *) (& fields->f_cb2sel));
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break;
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case MT_OPERAND_CBRB :
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errmsg = parse_cbrb (cd, strp, MT_OPERAND_CBRB, (unsigned long *) (& fields->f_cbrb));
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break;
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case MT_OPERAND_CBS :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBS, (unsigned long *) (& fields->f_cbs));
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break;
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case MT_OPERAND_CBX :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBX, (unsigned long *) (& fields->f_cbx));
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break;
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case MT_OPERAND_CCB :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CCB, (unsigned long *) (& fields->f_ccb));
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break;
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case MT_OPERAND_CDB :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CDB, (unsigned long *) (& fields->f_cdb));
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break;
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case MT_OPERAND_CELL :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CELL, (unsigned long *) (& fields->f_cell));
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break;
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case MT_OPERAND_COLNUM :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_COLNUM, (unsigned long *) (& fields->f_colnum));
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break;
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case MT_OPERAND_CONTNUM :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CONTNUM, (unsigned long *) (& fields->f_contnum));
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break;
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case MT_OPERAND_CR :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CR, (unsigned long *) (& fields->f_cr));
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break;
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case MT_OPERAND_CTXDISP :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CTXDISP, (unsigned long *) (& fields->f_ctxdisp));
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break;
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case MT_OPERAND_DUP :
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errmsg = parse_dup (cd, strp, MT_OPERAND_DUP, (unsigned long *) (& fields->f_dup));
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break;
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case MT_OPERAND_FBDISP :
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errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBDISP, (unsigned long *) (& fields->f_fbdisp));
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break;
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case MT_OPERAND_FBINCR :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBINCR, (unsigned long *) (& fields->f_fbincr));
|
||
break;
|
||
case MT_OPERAND_FRDR :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_dr);
|
||
break;
|
||
case MT_OPERAND_FRDRRR :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_drrr);
|
||
break;
|
||
case MT_OPERAND_FRSR1 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr1);
|
||
break;
|
||
case MT_OPERAND_FRSR2 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr2);
|
||
break;
|
||
case MT_OPERAND_ID :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ID, (unsigned long *) (& fields->f_id));
|
||
break;
|
||
case MT_OPERAND_IMM16 :
|
||
errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16, (long *) (& fields->f_imm16s));
|
||
break;
|
||
case MT_OPERAND_IMM16L :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_IMM16L, (unsigned long *) (& fields->f_imm16l));
|
||
break;
|
||
case MT_OPERAND_IMM16O :
|
||
errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16O, (unsigned long *) (& fields->f_imm16s));
|
||
break;
|
||
case MT_OPERAND_IMM16Z :
|
||
errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16Z, (unsigned long *) (& fields->f_imm16u));
|
||
break;
|
||
case MT_OPERAND_INCAMT :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCAMT, (unsigned long *) (& fields->f_incamt));
|
||
break;
|
||
case MT_OPERAND_INCR :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCR, (unsigned long *) (& fields->f_incr));
|
||
break;
|
||
case MT_OPERAND_LENGTH :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_LENGTH, (unsigned long *) (& fields->f_length));
|
||
break;
|
||
case MT_OPERAND_LOOPSIZE :
|
||
errmsg = parse_loopsize (cd, strp, MT_OPERAND_LOOPSIZE, (unsigned long *) (& fields->f_loopo));
|
||
break;
|
||
case MT_OPERAND_MASK :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK, (unsigned long *) (& fields->f_mask));
|
||
break;
|
||
case MT_OPERAND_MASK1 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK1, (unsigned long *) (& fields->f_mask1));
|
||
break;
|
||
case MT_OPERAND_MODE :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MODE, (unsigned long *) (& fields->f_mode));
|
||
break;
|
||
case MT_OPERAND_PERM :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_PERM, (unsigned long *) (& fields->f_perm));
|
||
break;
|
||
case MT_OPERAND_RBBC :
|
||
errmsg = parse_rbbc (cd, strp, MT_OPERAND_RBBC, (unsigned long *) (& fields->f_rbbc));
|
||
break;
|
||
case MT_OPERAND_RC :
|
||
errmsg = parse_rc (cd, strp, MT_OPERAND_RC, (unsigned long *) (& fields->f_rc));
|
||
break;
|
||
case MT_OPERAND_RC1 :
|
||
errmsg = parse_rc (cd, strp, MT_OPERAND_RC1, (unsigned long *) (& fields->f_rc1));
|
||
break;
|
||
case MT_OPERAND_RC2 :
|
||
errmsg = parse_rc (cd, strp, MT_OPERAND_RC2, (unsigned long *) (& fields->f_rc2));
|
||
break;
|
||
case MT_OPERAND_RC3 :
|
||
errmsg = parse_rc (cd, strp, MT_OPERAND_RC3, (unsigned long *) (& fields->f_rc3));
|
||
break;
|
||
case MT_OPERAND_RCNUM :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RCNUM, (unsigned long *) (& fields->f_rcnum));
|
||
break;
|
||
case MT_OPERAND_RDA :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RDA, (unsigned long *) (& fields->f_rda));
|
||
break;
|
||
case MT_OPERAND_ROWNUM :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM, (unsigned long *) (& fields->f_rownum));
|
||
break;
|
||
case MT_OPERAND_ROWNUM1 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM1, (unsigned long *) (& fields->f_rownum1));
|
||
break;
|
||
case MT_OPERAND_ROWNUM2 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM2, (unsigned long *) (& fields->f_rownum2));
|
||
break;
|
||
case MT_OPERAND_SIZE :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_SIZE, (unsigned long *) (& fields->f_size));
|
||
break;
|
||
case MT_OPERAND_TYPE :
|
||
errmsg = parse_type (cd, strp, MT_OPERAND_TYPE, (unsigned long *) (& fields->f_type));
|
||
break;
|
||
case MT_OPERAND_WR :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_WR, (unsigned long *) (& fields->f_wr));
|
||
break;
|
||
case MT_OPERAND_XMODE :
|
||
errmsg = parse_xmode (cd, strp, MT_OPERAND_XMODE, (unsigned long *) (& fields->f_xmode));
|
||
break;
|
||
|
||
default :
|
||
/* xgettext:c-format */
|
||
fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
|
||
abort ();
|
||
}
|
||
|
||
return errmsg;
|
||
}
|
||
|
||
cgen_parse_fn * const mt_cgen_parse_handlers[] =
|
||
{
|
||
parse_insn_normal,
|
||
};
|
||
|
||
void
|
||
mt_cgen_init_asm (CGEN_CPU_DESC cd)
|
||
{
|
||
mt_cgen_init_opcode_table (cd);
|
||
mt_cgen_init_ibld_table (cd);
|
||
cd->parse_handlers = & mt_cgen_parse_handlers[0];
|
||
cd->parse_operand = mt_cgen_parse_operand;
|
||
#ifdef CGEN_ASM_INIT_HOOK
|
||
CGEN_ASM_INIT_HOOK
|
||
#endif
|
||
}
|
||
|
||
|
||
|
||
/* Regex construction routine.
|
||
|
||
This translates an opcode syntax string into a regex string,
|
||
by replacing any non-character syntax element (such as an
|
||
opcode) with the pattern '.*'
|
||
|
||
It then compiles the regex and stores it in the opcode, for
|
||
later use by mt_cgen_assemble_insn
|
||
|
||
Returns NULL for success, an error message for failure. */
|
||
|
||
char *
|
||
mt_cgen_build_insn_regex (CGEN_INSN *insn)
|
||
{
|
||
CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
|
||
const char *mnem = CGEN_INSN_MNEMONIC (insn);
|
||
char rxbuf[CGEN_MAX_RX_ELEMENTS];
|
||
char *rx = rxbuf;
|
||
const CGEN_SYNTAX_CHAR_TYPE *syn;
|
||
int reg_err;
|
||
|
||
syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
|
||
|
||
/* Mnemonics come first in the syntax string. */
|
||
if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
|
||
return _("missing mnemonic in syntax string");
|
||
++syn;
|
||
|
||
/* Generate a case sensitive regular expression that emulates case
|
||
insensitive matching in the "C" locale. We cannot generate a case
|
||
insensitive regular expression because in Turkish locales, 'i' and 'I'
|
||
are not equal modulo case conversion. */
|
||
|
||
/* Copy the literal mnemonic out of the insn. */
|
||
for (; *mnem; mnem++)
|
||
{
|
||
char c = *mnem;
|
||
|
||
if (ISALPHA (c))
|
||
{
|
||
*rx++ = '[';
|
||
*rx++ = TOLOWER (c);
|
||
*rx++ = TOUPPER (c);
|
||
*rx++ = ']';
|
||
}
|
||
else
|
||
*rx++ = c;
|
||
}
|
||
|
||
/* Copy any remaining literals from the syntax string into the rx. */
|
||
for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
|
||
{
|
||
if (CGEN_SYNTAX_CHAR_P (* syn))
|
||
{
|
||
char c = CGEN_SYNTAX_CHAR (* syn);
|
||
|
||
switch (c)
|
||
{
|
||
/* Escape any regex metacharacters in the syntax. */
|
||
case '.': case '[': case '\\':
|
||
case '*': case '^': case '$':
|
||
|
||
#ifdef CGEN_ESCAPE_EXTENDED_REGEX
|
||
case '?': case '{': case '}':
|
||
case '(': case ')': case '*':
|
||
case '|': case '+': case ']':
|
||
#endif
|
||
*rx++ = '\\';
|
||
*rx++ = c;
|
||
break;
|
||
|
||
default:
|
||
if (ISALPHA (c))
|
||
{
|
||
*rx++ = '[';
|
||
*rx++ = TOLOWER (c);
|
||
*rx++ = TOUPPER (c);
|
||
*rx++ = ']';
|
||
}
|
||
else
|
||
*rx++ = c;
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Replace non-syntax fields with globs. */
|
||
*rx++ = '.';
|
||
*rx++ = '*';
|
||
}
|
||
}
|
||
|
||
/* Trailing whitespace ok. */
|
||
* rx++ = '[';
|
||
* rx++ = ' ';
|
||
* rx++ = '\t';
|
||
* rx++ = ']';
|
||
* rx++ = '*';
|
||
|
||
/* But anchor it after that. */
|
||
* rx++ = '$';
|
||
* rx = '\0';
|
||
|
||
CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
|
||
reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
|
||
|
||
if (reg_err == 0)
|
||
return NULL;
|
||
else
|
||
{
|
||
static char msg[80];
|
||
|
||
regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
|
||
regfree ((regex_t *) CGEN_INSN_RX (insn));
|
||
free (CGEN_INSN_RX (insn));
|
||
(CGEN_INSN_RX (insn)) = NULL;
|
||
return msg;
|
||
}
|
||
}
|
||
|
||
|
||
/* Default insn parser.
|
||
|
||
The syntax string is scanned and operands are parsed and stored in FIELDS.
|
||
Relocs are queued as we go via other callbacks.
|
||
|
||
??? 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
|
||
the beginning. Backtracking will be necessary in parsing subexpressions,
|
||
but that can be handled there. Not handling backtracking here may get
|
||
expensive in the case of the m68k. Deal with later.
|
||
|
||
Returns NULL for success, an error message for failure. */
|
||
|
||
static const char *
|
||
parse_insn_normal (CGEN_CPU_DESC cd,
|
||
const CGEN_INSN *insn,
|
||
const char **strp,
|
||
CGEN_FIELDS *fields)
|
||
{
|
||
/* ??? Runtime added insns not handled yet. */
|
||
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
||
const char *str = *strp;
|
||
const char *errmsg;
|
||
const char *p;
|
||
const CGEN_SYNTAX_CHAR_TYPE * syn;
|
||
#ifdef CGEN_MNEMONIC_OPERANDS
|
||
/* FIXME: wip */
|
||
int past_opcode_p;
|
||
#endif
|
||
|
||
/* For now we assume the mnemonic is first (there are no leading operands).
|
||
We can parse it without needing to set up operand parsing.
|
||
GAS's input scrubber will ensure mnemonics are lowercase, but we may
|
||
not be called from GAS. */
|
||
p = CGEN_INSN_MNEMONIC (insn);
|
||
while (*p && TOLOWER (*p) == TOLOWER (*str))
|
||
++p, ++str;
|
||
|
||
if (* p)
|
||
return _("unrecognized instruction");
|
||
|
||
#ifndef CGEN_MNEMONIC_OPERANDS
|
||
if (* str && ! ISSPACE (* str))
|
||
return _("unrecognized instruction");
|
||
#endif
|
||
|
||
CGEN_INIT_PARSE (cd);
|
||
cgen_init_parse_operand (cd);
|
||
#ifdef CGEN_MNEMONIC_OPERANDS
|
||
past_opcode_p = 0;
|
||
#endif
|
||
|
||
/* We don't check for (*str != '\0') here because we want to parse
|
||
any trailing fake arguments in the syntax string. */
|
||
syn = CGEN_SYNTAX_STRING (syntax);
|
||
|
||
/* Mnemonics come first for now, ensure valid string. */
|
||
if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
|
||
abort ();
|
||
|
||
++syn;
|
||
|
||
while (* syn != 0)
|
||
{
|
||
/* Non operand chars must match exactly. */
|
||
if (CGEN_SYNTAX_CHAR_P (* syn))
|
||
{
|
||
/* FIXME: While we allow for non-GAS callers above, we assume the
|
||
first char after the mnemonic part is a space. */
|
||
/* FIXME: We also take inappropriate advantage of the fact that
|
||
GAS's input scrubber will remove extraneous blanks. */
|
||
if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
|
||
{
|
||
#ifdef CGEN_MNEMONIC_OPERANDS
|
||
if (CGEN_SYNTAX_CHAR(* syn) == ' ')
|
||
past_opcode_p = 1;
|
||
#endif
|
||
++ syn;
|
||
++ str;
|
||
}
|
||
else if (*str)
|
||
{
|
||
/* Syntax char didn't match. Can't be this insn. */
|
||
static char msg [80];
|
||
|
||
/* xgettext:c-format */
|
||
sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
|
||
CGEN_SYNTAX_CHAR(*syn), *str);
|
||
return msg;
|
||
}
|
||
else
|
||
{
|
||
/* Ran out of input. */
|
||
static char msg [80];
|
||
|
||
/* xgettext:c-format */
|
||
sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
|
||
CGEN_SYNTAX_CHAR(*syn));
|
||
return msg;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
#ifdef CGEN_MNEMONIC_OPERANDS
|
||
(void) past_opcode_p;
|
||
#endif
|
||
/* We have an operand of some sort. */
|
||
errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields);
|
||
if (errmsg)
|
||
return errmsg;
|
||
|
||
/* Done with this operand, continue with next one. */
|
||
++ syn;
|
||
}
|
||
|
||
/* If we're at the end of the syntax string, we're done. */
|
||
if (* syn == 0)
|
||
{
|
||
/* 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
|
||
the insn and it is assumed that longer versions of insns appear
|
||
before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
|
||
while (ISSPACE (* str))
|
||
++ str;
|
||
|
||
if (* str != '\0')
|
||
return _("junk at end of line"); /* FIXME: would like to include `str' */
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* We couldn't parse it. */
|
||
return _("unrecognized instruction");
|
||
}
|
||
|
||
/* Main entry point.
|
||
This routine is called for each instruction to be assembled.
|
||
STR points to the insn to be assembled.
|
||
We assume all necessary tables have been initialized.
|
||
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
|
||
still needs to be converted to target byte order, otherwise BUF is an array
|
||
of bytes in target byte order.
|
||
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
|
||
printed).
|
||
|
||
Note that when processing (non-alias) macro-insns,
|
||
this function recurses.
|
||
|
||
??? It's possible to make this cpu-independent.
|
||
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
|
||
[for example this file isn't _that_ big], but keeping the possibility in
|
||
mind helps keep the design clean. */
|
||
|
||
const CGEN_INSN *
|
||
mt_cgen_assemble_insn (CGEN_CPU_DESC cd,
|
||
const char *str,
|
||
CGEN_FIELDS *fields,
|
||
CGEN_INSN_BYTES_PTR buf,
|
||
char **errmsg)
|
||
{
|
||
const char *start;
|
||
CGEN_INSN_LIST *ilist;
|
||
const char *parse_errmsg = NULL;
|
||
const char *insert_errmsg = NULL;
|
||
int recognized_mnemonic = 0;
|
||
|
||
/* Skip leading white space. */
|
||
while (ISSPACE (* str))
|
||
++ str;
|
||
|
||
/* The instructions are stored in hashed lists.
|
||
Get the first in the list. */
|
||
ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
|
||
|
||
/* Keep looking until we find a match. */
|
||
start = str;
|
||
for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
|
||
{
|
||
const CGEN_INSN *insn = ilist->insn;
|
||
recognized_mnemonic = 1;
|
||
|
||
#ifdef CGEN_VALIDATE_INSN_SUPPORTED
|
||
/* Not usually needed as unsupported opcodes
|
||
shouldn't be in the hash lists. */
|
||
/* Is this insn supported by the selected cpu? */
|
||
if (! mt_cgen_insn_supported (cd, insn))
|
||
continue;
|
||
#endif
|
||
/* If the RELAXED attribute is set, this is an insn that shouldn't be
|
||
chosen immediately. Instead, it is used during assembler/linker
|
||
relaxation if possible. */
|
||
if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
|
||
continue;
|
||
|
||
str = start;
|
||
|
||
/* Skip this insn if str doesn't look right lexically. */
|
||
if (CGEN_INSN_RX (insn) != NULL &&
|
||
regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
|
||
continue;
|
||
|
||
/* Allow parse/insert handlers to obtain length of insn. */
|
||
CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
|
||
|
||
parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
|
||
if (parse_errmsg != NULL)
|
||
continue;
|
||
|
||
/* ??? 0 is passed for `pc'. */
|
||
insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
|
||
(bfd_vma) 0);
|
||
if (insert_errmsg != NULL)
|
||
continue;
|
||
|
||
/* It is up to the caller to actually output the insn and any
|
||
queued relocs. */
|
||
return insn;
|
||
}
|
||
|
||
{
|
||
static char errbuf[150];
|
||
const char *tmp_errmsg;
|
||
#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
|
||
#define be_verbose 1
|
||
#else
|
||
#define be_verbose 0
|
||
#endif
|
||
|
||
if (be_verbose)
|
||
{
|
||
/* If requesting verbose error messages, use insert_errmsg.
|
||
Failing that, use parse_errmsg. */
|
||
tmp_errmsg = (insert_errmsg ? insert_errmsg :
|
||
parse_errmsg ? parse_errmsg :
|
||
recognized_mnemonic ?
|
||
_("unrecognized form of instruction") :
|
||
_("unrecognized instruction"));
|
||
|
||
if (strlen (start) > 50)
|
||
/* xgettext:c-format */
|
||
sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
|
||
else
|
||
/* xgettext:c-format */
|
||
sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
|
||
}
|
||
else
|
||
{
|
||
if (strlen (start) > 50)
|
||
/* xgettext:c-format */
|
||
sprintf (errbuf, _("bad instruction `%.50s...'"), start);
|
||
else
|
||
/* xgettext:c-format */
|
||
sprintf (errbuf, _("bad instruction `%.50s'"), start);
|
||
}
|
||
|
||
*errmsg = errbuf;
|
||
return NULL;
|
||
}
|
||
}
|