/* Disassembly routines for TMS320C54X architecture
- Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1999-2020 Free Software Foundation, Inc.
Contributed by Timothy Wall (twall@cygnus.com)
- This program is free software; you can redistribute it and/or modify
+ This file is part of the GNU opcodes library.
+
+ This library is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
+ It is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ along with this file; see the file COPYING. If not, write to the
+ Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+#include "sysdep.h"
#include <errno.h>
#include <math.h>
#include <stdlib.h>
-#include "sysdep.h"
-#include "dis-asm.h"
+#include "disassemble.h"
#include "opcode/tic54x.h"
#include "coff/tic54x.h"
-typedef struct _instruction {
- int parallel;
- template *tm;
- partemplate *ptm;
-} instruction;
-
-static int has_lkaddr PARAMS ((unsigned short, template *));
-static int get_insn_size PARAMS ((unsigned short, instruction *));
-static int get_instruction PARAMS ((disassemble_info *, bfd_vma,
- unsigned short, instruction *));
-static int print_instruction PARAMS ((disassemble_info *, bfd_vma,
- unsigned short, char *,
- enum optype [], int, int));
-static int print_parallel_instruction PARAMS ((disassemble_info *, bfd_vma,
- unsigned short, partemplate *,
- int));
+static int has_lkaddr (unsigned short, const insn_template *);
+static int get_insn_size (unsigned short, const insn_template *);
+static int print_instruction (disassemble_info *, bfd_vma,
+ unsigned short, const char *,
+ const enum optype [], int, int);
+static int print_parallel_instruction (disassemble_info *, bfd_vma,
+ unsigned short,
+ const insn_template *, int);
static int sprint_dual_address (disassemble_info *,char [],
unsigned short);
static int sprint_indirect_address (disassemble_info *,char [],
static int sprint_cc2 (disassemble_info *,char *,unsigned short);
int
-print_insn_tic54x (memaddr, info)
- bfd_vma memaddr;
- disassemble_info *info;
+print_insn_tic54x (bfd_vma memaddr, disassemble_info *info)
{
bfd_byte opbuf[2];
unsigned short opcode;
int status, size;
- instruction insn;
+ const insn_template* tm;
status = (*info->read_memory_func) (memaddr, opbuf, 2, info);
if (status != 0)
}
opcode = bfd_getl16 (opbuf);
- if (!get_instruction (info, memaddr, opcode, &insn))
- return -1;
+ tm = tic54x_get_insn (info, memaddr, opcode, &size);
- size = get_insn_size (opcode, &insn);
info->bytes_per_line = 2;
info->bytes_per_chunk = 2;
info->octets_per_byte = 2;
info->display_endian = BFD_ENDIAN_LITTLE;
- if (insn.parallel)
+ if (tm->flags & FL_PAR)
{
- if (!print_parallel_instruction (info, memaddr, opcode, insn.ptm, size))
+ if (!print_parallel_instruction (info, memaddr, opcode, tm, size))
return -1;
}
else
{
if (!print_instruction (info, memaddr, opcode,
- (char *) insn.tm->name,
- insn.tm->operand_types,
- size, (insn.tm->flags & FL_EXT)))
+ (char *) tm->name,
+ tm->operand_types,
+ size, (tm->flags & FL_EXT)))
return -1;
}
}
static int
-has_lkaddr (opcode, tm)
- unsigned short opcode;
- template *tm;
+has_lkaddr (unsigned short memdata, const insn_template *tm)
{
- return (IS_LKADDR (opcode)
+ return (IS_LKADDR (memdata)
&& (OPTYPE (tm->operand_types[0]) == OP_Smem
|| OPTYPE (tm->operand_types[1]) == OP_Smem
|| OPTYPE (tm->operand_types[2]) == OP_Smem
- || OPTYPE (tm->operand_types[1]) == OP_Sind));
+ || OPTYPE (tm->operand_types[1]) == OP_Sind
+ || OPTYPE (tm->operand_types[0]) == OP_Lmem
+ || OPTYPE (tm->operand_types[1]) == OP_Lmem));
}
/* always returns 1 (whether an insn template was found) since we provide an
"unknown instruction" template */
-static int
-get_instruction (info, addr, opcode, insn)
- disassemble_info *info;
- bfd_vma addr;
- unsigned short opcode;
- instruction *insn;
+const insn_template*
+tic54x_get_insn (disassemble_info *info, bfd_vma addr,
+ unsigned short memdata, int *size)
{
- template * tm;
- partemplate * ptm;
+ const insn_template *tm = NULL;
- insn->parallel = 0;
- for (tm = (template *) tic54x_optab; tm->name; tm++)
+ for (tm = tic54x_optab; tm->name; tm++)
{
- if (tm->opcode == (opcode & tm->mask))
+ if (tm->opcode == (memdata & tm->mask))
{
/* a few opcodes span two words */
if (tm->flags & FL_EXT)
/* if lk addressing is used, the second half of the opcode gets
pushed one word later */
bfd_byte opbuf[2];
- bfd_vma addr2 = addr + 1 + has_lkaddr (opcode, tm);
+ bfd_vma addr2 = addr + 1 + has_lkaddr (memdata, tm);
int status = (*info->read_memory_func) (addr2, opbuf, 2, info);
+ // FIXME handle errors
if (status == 0)
{
- unsigned short opcode2 = bfd_getl16 (opbuf);
- if (tm->opcode2 == (opcode2 & tm->mask2))
+ unsigned short data2 = bfd_getl16 (opbuf);
+ if (tm->opcode2 == (data2 & tm->mask2))
{
- insn->tm = tm;
- return 1;
+ if (size) *size = get_insn_size (memdata, tm);
+ return tm;
}
}
}
else
{
- insn->tm = tm;
- return 1;
+ if (size) *size = get_insn_size (memdata, tm);
+ return tm;
}
}
}
- for (ptm = (partemplate *) tic54x_paroptab; ptm->name; ptm++)
+ for (tm = (insn_template *) tic54x_paroptab; tm->name; tm++)
{
- if (ptm->opcode == (opcode & ptm->mask))
+ if (tm->opcode == (memdata & tm->mask))
{
- insn->parallel = 1;
- insn->ptm = ptm;
- return 1;
+ if (size) *size = get_insn_size (memdata, tm);
+ return tm;
}
}
- insn->tm = (template *) &tic54x_unknown_opcode;
- return 1;
+ if (size) *size = 1;
+ return &tic54x_unknown_opcode;
}
static int
-get_insn_size (opcode, insn)
- unsigned short opcode;
- instruction *insn;
+get_insn_size (unsigned short memdata, const insn_template *insn)
{
int size;
- if (insn->parallel)
+ if (insn->flags & FL_PAR)
{
/* only non-parallel instructions support lk addressing */
- size = insn->ptm->words;
+ size = insn->words;
}
else
{
- size = insn->tm->words + has_lkaddr (opcode, insn->tm);
+ size = insn->words + has_lkaddr (memdata, insn);
}
return size;
}
int
-print_instruction (info, memaddr, opcode, tm_name, tm_operands, size, ext)
- disassemble_info *info;
- bfd_vma memaddr;
- unsigned short opcode;
- char *tm_name;
- enum optype tm_operands[];
- int size;
- int ext;
+print_instruction (disassemble_info *info,
+ bfd_vma memaddr,
+ unsigned short opcode,
+ const char *tm_name,
+ const enum optype tm_operands[],
+ int size,
+ int ext)
{
static int n;
/* string storage for multiple operands */
case OP_CC3:
{
const char *code[] = { "eq", "lt", "gt", "neq" };
- sprintf (operand[i], code[CC3 (opcode)]);
+
+ /* Do not use sprintf with only two parameters as a
+ compiler warning could be generated in such conditions. */
+ sprintf (operand[i], "%s", code[CC3 (opcode)]);
info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
break;
}
break;
}
case OP_k5:
- sprintf (operand[i], "#%d",
- (int) (((signed char) opcode & 0x1F) << 3) >> 3);
+ sprintf (operand[i], "#%d", ((opcode & 0x1F) ^ 0x10) - 0x10);
info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
break;
case OP_k8u:
}
static int
-print_parallel_instruction (info, memaddr, opcode, ptm, size)
- disassemble_info *info;
- bfd_vma memaddr;
- unsigned short opcode;
- partemplate *ptm;
- int size;
+print_parallel_instruction (disassemble_info *info,
+ bfd_vma memaddr,
+ unsigned short opcode,
+ const insn_template *ptm,
+ int size)
{
print_instruction (info, memaddr, opcode,
ptm->name, ptm->operand_types, size, 0);
}
static int
-sprint_dual_address (info, buf, code)
- disassemble_info *info ATTRIBUTE_UNUSED;
- char buf[];
- unsigned short code;
+sprint_dual_address (disassemble_info *info ATTRIBUTE_UNUSED,
+ char buf[],
+ unsigned short code)
{
const char *formats[] = {
"*ar%d",
}
static int
-sprint_indirect_address (info, buf, opcode)
- disassemble_info *info ATTRIBUTE_UNUSED;
- char buf[];
- unsigned short opcode;
+sprint_indirect_address (disassemble_info *info ATTRIBUTE_UNUSED,
+ char buf[],
+ unsigned short opcode)
{
const char *formats[] = {
"*ar%d",
}
static int
-sprint_direct_address (info, buf, opcode)
- disassemble_info *info ATTRIBUTE_UNUSED;
- char buf[];
- unsigned short opcode;
+sprint_direct_address (disassemble_info *info ATTRIBUTE_UNUSED,
+ char buf[],
+ unsigned short opcode)
{
/* FIXME -- look up relocation if available */
- return sprintf (buf, "0x??%02x", (int) (opcode & 0x7F));
+ return sprintf (buf, "DP+0x%02x", (int) (opcode & 0x7F));
}
static int
-sprint_mmr (info, buf, mmr)
- disassemble_info *info ATTRIBUTE_UNUSED;
- char buf[];
- int mmr;
+sprint_mmr (disassemble_info *info ATTRIBUTE_UNUSED,
+ char buf[],
+ int mmr)
{
- symbol *reg = (symbol *) mmregs;
+ tic54x_symbol *reg = (tic54x_symbol *) mmregs;
while (reg->name != NULL)
{
if (mmr == reg->value)
}
static int
-sprint_cc2 (info, buf, opcode)
- disassemble_info *info ATTRIBUTE_UNUSED;
- char *buf;
- unsigned short opcode;
+sprint_cc2 (disassemble_info *info ATTRIBUTE_UNUSED,
+ char *buf,
+ unsigned short opcode)
{
const char *cc2[] = {
"??", "??", "ageq", "alt", "aneq", "aeq", "agt", "aleq",
}
static int
-sprint_condition (info, buf, opcode)
- disassemble_info *info ATTRIBUTE_UNUSED;
- char *buf;
- unsigned short opcode;
+sprint_condition (disassemble_info *info ATTRIBUTE_UNUSED,
+ char *buf,
+ unsigned short opcode)
{
char *start = buf;
const char *cmp[] = {