/* Disassemble D30V instructions.
- Copyright 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1997-2020 Free Software Foundation, Inc.
-This program 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.
+ This file is part of the GNU opcodes library.
-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.
+ 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 3, or (at your option)
+ any later version.
-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. */
+ 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., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include <stdio.h>
#include "sysdep.h"
+#include <stdio.h>
#include "opcode/d30v.h"
-#include "dis-asm.h"
+#include "disassemble.h"
#include "opintl.h"
+#include "libiberty.h"
#define PC_MASK 0xFFFFFFFF
-static int lookup_opcode PARAMS ((struct d30v_insn *insn, long num, int is_long));
-static void print_insn PARAMS ((struct disassemble_info *info, bfd_vma memaddr, long long num,
- struct d30v_insn *insn, int is_long, int show_ext));
-static int extract_value PARAMS ((long long num, struct d30v_operand *oper, int is_long));
-
-int
-print_insn_d30v (memaddr, info)
- bfd_vma memaddr;
- struct disassemble_info *info;
-{
- int status, result;
- bfd_byte buffer[12];
- unsigned long in1, in2;
- struct d30v_insn insn;
- long long num;
-
- insn.form = (struct d30v_format *) NULL;
-
- info->bytes_per_line = 8;
- info->bytes_per_chunk = 4;
- info->display_endian = BFD_ENDIAN_BIG;
-
- status = (*info->read_memory_func) (memaddr, buffer, 4, info);
- if (status != 0)
- {
- (*info->memory_error_func) (status, memaddr, info);
- return -1;
- }
- in1 = bfd_getb32 (buffer);
-
- status = (*info->read_memory_func) (memaddr + 4, buffer, 4, info);
- if (status != 0)
- {
- info->bytes_per_line = 8;
- if (!(result = lookup_opcode (&insn, in1, 0)))
- (*info->fprintf_func) (info->stream, ".long\t0x%x", in1);
- else
- print_insn (info, memaddr, (long long) in1, &insn, 0, result);
- return 4;
- }
- in2 = bfd_getb32 (buffer);
-
- if (in1 & in2 & FM01)
- {
- /* LONG instruction. */
- if (!(result = lookup_opcode (&insn, in1, 1)))
- {
- (*info->fprintf_func) (info->stream, ".long\t0x%x,0x%x", in1, in2);
- return 8;
- }
- num = (long long) in1 << 32 | in2;
- print_insn (info, memaddr, num, &insn, 1, result);
- }
- else
- {
- num = in1;
- if (!(result = lookup_opcode (&insn, in1, 0)))
- (*info->fprintf_func) (info->stream, ".long\t0x%x", in1);
- else
- print_insn (info, memaddr, num, &insn, 0, result);
-
- switch (((in1 >> 31) << 1) | (in2 >> 31))
- {
- case 0:
- (*info->fprintf_func) (info->stream, "\t||\t");
- break;
- case 1:
- (*info->fprintf_func) (info->stream, "\t->\t");
- break;
- case 2:
- (*info->fprintf_func) (info->stream, "\t<-\t");
- default:
- break;
- }
-
- insn.form = (struct d30v_format *) NULL;
- num = in2;
- if (!(result = lookup_opcode (&insn, in2, 0)))
- (*info->fprintf_func) (info->stream, ".long\t0x%x", in2);
- else
- print_insn (info, memaddr, num, &insn, 0, result);
- }
- return 8;
-}
-
/* Return 0 if lookup fails,
1 if found and only one form,
2 if found and there are short and long forms. */
static int
-lookup_opcode (insn, num, is_long)
- struct d30v_insn *insn;
- long num;
- int is_long;
+lookup_opcode (struct d30v_insn *insn, long num, int is_long)
{
- int i = 0, index;
+ int i = 0, op_index;
struct d30v_format *f;
struct d30v_opcode *op = (struct d30v_opcode *) d30v_opcode_table;
int op1 = (num >> 25) & 0x7;
while (op->op1 == op1 && op->op2 == op2)
{
/* Scan through all the formats for the opcode. */
- index = op->format[i++];
+ op_index = op->format[i++];
do
{
- f = (struct d30v_format *) &d30v_format_table[index];
- while (f->form == index)
+ f = (struct d30v_format *) &d30v_format_table[op_index];
+ while (f->form == op_index)
{
if ((!is_long || f->form >= LONG) && (f->modifier == mod))
{
if (insn->form)
break;
}
- while ((index = op->format[i++]) != 0);
+ while ((op_index = op->format[i++]) != 0);
if (insn->form)
break;
op++;
return 1;
}
+static int
+extract_value (uint64_t num, const struct d30v_operand *oper, int is_long)
+{
+ unsigned int val;
+ int shift = 12 - oper->position;
+ unsigned int mask = (0xFFFFFFFF >> (32 - oper->bits));
+
+ if (is_long)
+ {
+ if (oper->bits == 32)
+ /* Piece together 32-bit constant. */
+ val = ((num & 0x3FFFF)
+ | ((num & 0xFF00000) >> 2)
+ | ((num & 0x3F00000000LL) >> 6));
+ else
+ val = (num >> (32 + shift)) & mask;
+ }
+ else
+ val = (num >> shift) & mask;
+
+ if (oper->flags & OPERAND_SHIFT)
+ val <<= 3;
+
+ return val;
+}
+
static void
-print_insn (info, memaddr, num, insn, is_long, show_ext)
- struct disassemble_info *info;
- bfd_vma memaddr;
- long long num;
- struct d30v_insn *insn;
- int is_long;
- int show_ext;
+print_insn (struct disassemble_info *info,
+ bfd_vma memaddr,
+ uint64_t num,
+ struct d30v_insn *insn,
+ int is_long,
+ int show_ext)
{
int val, opnum, need_comma = 0;
- struct d30v_operand *oper;
- int i, match, opind = 0, need_paren = 0, found_control = 0;
+ const struct d30v_operand *oper;
+ int i, match, need_paren = 0, found_control = 0;
+ unsigned int opind = 0;
(*info->fprintf_func) (info->stream, "%s", insn->op->name);
opind++;
val =
extract_value (num,
- (struct d30v_operand *) &d30v_operand_table[insn->form->operands[0]],
+ &d30v_operand_table[insn->form->operands[0]],
is_long);
(*info->fprintf_func) (info->stream, "%s", d30v_cc_names[val]);
}
(*info->fprintf_func) (info->stream, "\t");
- while ((opnum = insn->form->operands[opind++]) != 0)
+ while (opind < ARRAY_SIZE (insn->form->operands)
+ && (opnum = insn->form->operands[opind++]) != 0)
{
int bits;
- oper = (struct d30v_operand *) &d30v_operand_table[opnum];
+
+ oper = &d30v_operand_table[opnum];
bits = oper->bits;
if (oper->flags & OPERAND_SHIFT)
bits += 3;
match = 0;
if (oper->flags & OPERAND_CONTROL)
{
- struct d30v_operand *oper3 =
- (struct d30v_operand *) &d30v_operand_table[insn->form->operands[2]];
+ const struct d30v_operand *oper3
+ = &d30v_operand_table[insn->form->operands[2]];
int id = extract_value (num, oper3, is_long);
+
found_control = 1;
switch (id)
{
val |= OPERAND_FLAG;
break;
default:
- fprintf (stderr, "illegal id (%d)\n", id);
+ /* xgettext: c-format */
+ opcodes_error_handler (_("illegal id (%d)"), id);
+ abort ();
}
}
else if (oper->flags & OPERAND_ACC)
/* IMM6S3 is unsigned. */
if (oper->flags & OPERAND_SIGNED || bits == 32)
{
- long max;
- max = (1 << (bits - 1));
- if (val & max)
+ unsigned int sign = 1u << (bits - 1);
+ if (val & sign)
{
- if (bits == 32)
- val = -val;
- else
- val = -val & ((1 << bits) - 1);
+ val = -val & (sign + sign - 1);
neg = 1;
}
}
{
if (oper->flags & OPERAND_SIGNED)
{
- int max = (1 << (bits - 1));
- if (val & max)
+ unsigned int sign = 1u << (bits - 1);
+
+ if (val & sign)
{
- val = -val;
- if (bits < 32)
- val &= ((1 << bits) - 1);
+ val = -val & (sign + sign - 1);
(*info->fprintf_func) (info->stream, "-");
}
}
(*info->fprintf_func) (info->stream, "0x%x", val);
}
/* If there is another operand, then write a comma and space. */
- if (insn->form->operands[opind] && !(found_control && opind == 2))
+ if (opind < ARRAY_SIZE (insn->form->operands)
+ && insn->form->operands[opind]
+ && !(found_control && opind == 2))
need_comma = 1;
}
if (need_paren)
(*info->fprintf_func) (info->stream, ")");
}
-static int
-extract_value (num, oper, is_long)
- long long num;
- struct d30v_operand *oper;
- int is_long;
+int
+print_insn_d30v (bfd_vma memaddr, struct disassemble_info *info)
{
- int val;
- int shift = 12 - oper->position;
- int mask = (0xFFFFFFFF >> (32 - oper->bits));
+ int status, result;
+ bfd_byte buffer[12];
+ uint32_t in1, in2;
+ struct d30v_insn insn;
+ uint64_t num;
- if (is_long)
+ insn.form = NULL;
+
+ info->bytes_per_line = 8;
+ info->bytes_per_chunk = 4;
+ info->display_endian = BFD_ENDIAN_BIG;
+
+ status = (*info->read_memory_func) (memaddr, buffer, 4, info);
+ if (status != 0)
{
- if (oper->bits == 32)
+ (*info->memory_error_func) (status, memaddr, info);
+ return -1;
+ }
+ in1 = bfd_getb32 (buffer);
+
+ status = (*info->read_memory_func) (memaddr + 4, buffer, 4, info);
+ if (status != 0)
+ {
+ info->bytes_per_line = 8;
+ if (!(result = lookup_opcode (&insn, in1, 0)))
+ (*info->fprintf_func) (info->stream, ".long\t0x%x", in1);
+ else
+ print_insn (info, memaddr, (uint64_t) in1, &insn, 0, result);
+ return 4;
+ }
+ in2 = bfd_getb32 (buffer);
+
+ if (in1 & in2 & FM01)
+ {
+ /* LONG instruction. */
+ if (!(result = lookup_opcode (&insn, in1, 1)))
{
- /* Piece together 32-bit constant. */
- val = ((num & 0x3FFFF)
- | ((num & 0xFF00000) >> 2)
- | ((num & 0x3F00000000LL) >> 6));
+ (*info->fprintf_func) (info->stream, ".long\t0x%x,0x%x", in1, in2);
+ return 8;
}
- else
- val = (num >> (32 + shift)) & mask;
+ num = (uint64_t) in1 << 32 | in2;
+ print_insn (info, memaddr, num, &insn, 1, result);
}
else
- val = (num >> shift) & mask;
+ {
+ num = in1;
+ if (!(result = lookup_opcode (&insn, in1, 0)))
+ (*info->fprintf_func) (info->stream, ".long\t0x%x", in1);
+ else
+ print_insn (info, memaddr, num, &insn, 0, result);
- if (oper->flags & OPERAND_SHIFT)
- val <<= 3;
+ switch (((in1 >> 31) << 1) | (in2 >> 31))
+ {
+ case 0:
+ (*info->fprintf_func) (info->stream, "\t||\t");
+ break;
+ case 1:
+ (*info->fprintf_func) (info->stream, "\t->\t");
+ break;
+ case 2:
+ (*info->fprintf_func) (info->stream, "\t<-\t");
+ default:
+ break;
+ }
- return val;
+ insn.form = NULL;
+ num = in2;
+ if (!(result = lookup_opcode (&insn, in2, 0)))
+ (*info->fprintf_func) (info->stream, ".long\t0x%x", in2);
+ else
+ print_insn (info, memaddr, num, &insn, 0, result);
+ }
+ return 8;
}
projects / deliverable / binutils-gdb.git / blobdiff