/* Disassemble D30V instructions.
- Copyright (C) 1997 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 "sysdep.h"
#include <stdio.h>
-#include "opcode/d30v.h"
-#include "dis-asm.h"
+#include "opcode/d30v.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 ));
-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, i;
- bfd_byte buffer[12];
- unsigned long in1,in2;
- struct d30v_insn insn;
- long long num;
-
- insn.form = (struct d30v_format *)NULL;
-
- status = (*info->read_memory_func) (memaddr, buffer, 8, info);
- if (status != 0)
- {
- (*info->memory_error_func) (status, memaddr, info);
- return -1;
- }
- info->bytes_per_line = 8;
- info->bytes_per_chunk = 4;
- info->display_endian = BFD_ENDIAN_BIG;
- in1 = bfd_getb32 (buffer);
- in2 = bfd_getb32 (buffer+4);
-
- if (in1 & in2 & FM01)
- {
- /* LONG instruction */
- if (!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);
- }
- else
- {
- num = in1;
- if (!lookup_opcode(&insn, in1, 0))
- (*info->fprintf_func) (info->stream, ".long\t0x%x",in1);
- else
- print_insn(info, memaddr, num, &insn, 0);
-
- 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 (!lookup_opcode(&insn, in2, 0))
- (*info->fprintf_func) (info->stream, ".long\t0x%x",in2);
- else
- print_insn(info, memaddr, num, &insn, 0);
-
- }
- 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;
+ struct d30v_opcode *op = (struct d30v_opcode *) d30v_opcode_table;
int op1 = (num >> 25) & 0x7;
int op2 = (num >> 20) & 0x1f;
int mod = (num >> 18) & 0x3;
- /* find the opcode */
- do {
- if ((op->op1 == op1) && (op->op2 == op2))
- break;
- op++;
- } while (op->name);
+ /* Find the opcode. */
+ do
+ {
+ if ((op->op1 == op1) && (op->op2 == op2))
+ break;
+ op++;
+ }
+ while (op->name);
if (!op || !op->name)
return 0;
while (op->op1 == op1 && op->op2 == op2)
{
- /* scan through all the formats for the opcode */
- while (index = op->format[i++])
+ /* Scan through all the formats for the opcode. */
+ 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 ((op_index = op->format[i++]) != 0);
if (insn->form)
break;
op++;
- i=0;
+ i = 0;
}
if (insn->form == NULL)
return 0;
insn->op = op;
insn->ecc = (num >> 28) & 0x7;
- return 1;
+ if (op->format[1])
+ return 2;
+ else
+ 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 )
- struct disassemble_info *info;
- bfd_vma memaddr;
- long long num;
- struct d30v_insn *insn;
- int is_long;
+static void
+print_insn (struct disassemble_info *info,
+ bfd_vma memaddr,
+ uint64_t num,
+ struct d30v_insn *insn,
+ int is_long,
+ int show_ext)
{
- char buffer[128];
- int val, opnum, need_comma=0;
- struct d30v_operand *oper;
- int i, match, opind=0, need_paren=0, found_control=0;
+ unsigned int val, opnum;
+ const struct d30v_operand *oper;
+ int i, match, need_comma = 0, need_paren = 0, found_control = 0;
+ unsigned int opind = 0;
- (*info->fprintf_func) (info->stream, "%s",insn->op->name);
+ (*info->fprintf_func) (info->stream, "%s", insn->op->name);
- /* check for CMP or CMPU */
+ /* Check for CMP or CMPU. */
if (d30v_operand_table[insn->form->operands[0]].flags & OPERAND_NAME)
{
opind++;
- val = extract_value(num,(struct d30v_operand *)&d30v_operand_table[insn->form->operands[0]],is_long);
- (*info->fprintf_func) (info->stream, "%s",d30v_cc_names[val]);
+ val =
+ extract_value (num,
+ &d30v_operand_table[insn->form->operands[0]],
+ is_long);
+ (*info->fprintf_func) (info->stream, "%s", d30v_cc_names[val]);
+ }
+
+ /* Add in ".s" or ".l". */
+ if (show_ext == 2)
+ {
+ if (is_long)
+ (*info->fprintf_func) (info->stream, ".l");
+ else
+ (*info->fprintf_func) (info->stream, ".s");
}
if (insn->ecc)
- (*info->fprintf_func) (info->stream, "/%s",d30v_ecc_names[insn->ecc]);
+ (*info->fprintf_func) (info->stream, "/%s", d30v_ecc_names[insn->ecc]);
(*info->fprintf_func) (info->stream, "\t");
- while (opnum = insn->form->operands[opind++])
+ while (opind < ARRAY_SIZE (insn->form->operands)
+ && (opnum = insn->form->operands[opind++]) != 0)
{
- oper = (struct d30v_operand *)&d30v_operand_table[opnum];
+ int bits;
- if (need_comma && oper->flags != OPERAND_PLUS && oper->flags != OPERAND_MINUS)
+ oper = &d30v_operand_table[opnum];
+ bits = oper->bits;
+ if (oper->flags & OPERAND_SHIFT)
+ bits += 3;
+
+ if (need_comma
+ && oper->flags != OPERAND_PLUS
+ && oper->flags != OPERAND_MINUS)
{
- need_comma=0;
+ need_comma = 0;
(*info->fprintf_func) (info->stream, ", ");
}
}
if (oper->flags == OPERAND_MINUS)
{
- (*info->fprintf_func) (info->stream, "-");
+ (*info->fprintf_func) (info->stream, "-");
continue;
}
if (oper->flags == OPERAND_PLUS)
{
- (*info->fprintf_func) (info->stream, "+");
+ (*info->fprintf_func) (info->stream, "+");
continue;
}
if (oper->flags == OPERAND_ATSIGN)
{
- (*info->fprintf_func) (info->stream, "@");
+ (*info->fprintf_func) (info->stream, "@");
continue;
}
if (oper->flags == OPERAND_ATPAR)
{
- (*info->fprintf_func) (info->stream, "@(");
+ (*info->fprintf_func) (info->stream, "@(");
need_paren = 1;
continue;
}
if (oper->flags == OPERAND_SPECIAL)
continue;
- val = extract_value(num, oper, is_long);
-
+ val = extract_value (num, oper, is_long);
+
if (oper->flags & OPERAND_REG)
{
match = 0;
if (oper->flags & OPERAND_CONTROL)
{
- struct d30v_operand *oper3 =
- (struct d30v_operand *)&d30v_operand_table[insn->form->operands[2]];
- int id = extract_value (num, oper3, is_long );
+ 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 )
+ switch (id)
{
case 0:
val |= OPERAND_CONTROL;
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)
val |= OPERAND_ACC;
else if (oper->flags & OPERAND_FLAG)
val |= OPERAND_FLAG;
- for (i=0;i<reg_name_cnt();i++)
+ for (i = 0; i < reg_name_cnt (); i++)
{
if (val == pre_defined_registers[i].value)
{
if (pre_defined_registers[i].pname)
- (*info->fprintf_func) (info->stream, "%s",pre_defined_registers[i].pname);
+ (*info->fprintf_func)
+ (info->stream, "%s", pre_defined_registers[i].pname);
else
- (*info->fprintf_func) (info->stream, "%s",pre_defined_registers[i].name);
- match=1;
+ (*info->fprintf_func)
+ (info->stream, "%s", pre_defined_registers[i].name);
+ match = 1;
break;
}
}
- if (match==0)
+ if (match == 0)
{
- /* this would only get executed if a register was not in the
- register table */
- (*info->fprintf_func) (info->stream, "<unknown register %d>",val & 0x3F);
+ /* This would only get executed if a register was not in
+ the register table. */
+ (*info->fprintf_func)
+ (info->stream, _("<unknown register %d>"), val & 0x3F);
}
}
- else if (insn->op->reloc_flag == RELOC_PCREL)
+ /* repeati has a relocation, but its first argument is a plain
+ immediate. OTOH instructions like djsri have a pc-relative
+ delay target, but an absolute jump target. Therefore, a test
+ of insn->op->reloc_flag is not specific enough; we must test
+ if the actual operand we are handling now is pc-relative. */
+ else if (oper->flags & OPERAND_PCREL)
{
- long max;
- int neg=0;
- max = (1 << (oper->bits - 1));
- if (val & max)
+ int neg = 0;
+
+ /* IMM6S3 is unsigned. */
+ if (oper->flags & OPERAND_SIGNED || bits == 32)
{
- if (oper->bits == 32)
- val = -val;
- else
- val = -val & ((1 << oper->bits)-1);
- neg = 1;
+ unsigned int sign = 1u << (bits - 1);
+ if (val & sign)
+ {
+ val = -val & (sign + sign - 1);
+ neg = 1;
+ }
}
if (neg)
- (*info->print_address_func) ((memaddr - val) & PC_MASK, info);
+ {
+ (*info->fprintf_func) (info->stream, "-%x\t(", val);
+ (*info->print_address_func) ((memaddr - val) & PC_MASK, info);
+ (*info->fprintf_func) (info->stream, ")");
+ }
else
- (*info->print_address_func) ((memaddr + val) & PC_MASK, info);
+ {
+ (*info->fprintf_func) (info->stream, "%x\t(", val);
+ (*info->print_address_func) ((memaddr + val) & PC_MASK, info);
+ (*info->fprintf_func) (info->stream, ")");
+ }
}
else if (insn->op->reloc_flag == RELOC_ABS)
{
{
if (oper->flags & OPERAND_SIGNED)
{
- int max = (1 << (oper->bits - 1));
- if (val & max)
+ unsigned int sign = 1u << (bits - 1);
+
+ if (val & sign)
{
- val = -val & ((1 << oper->bits) - 1);
+ val = -val & (sign + sign - 1);
(*info->fprintf_func) (info->stream, "-");
}
}
- (*info->fprintf_func) (info->stream, "0x%x",val);
+ (*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 there is another operand, then write a comma and space. */
+ 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, ")");
}
+int
+print_insn_d30v (bfd_vma memaddr, struct disassemble_info *info)
+{
+ int status, result;
+ bfd_byte buffer[12];
+ uint32_t in1, in2;
+ struct d30v_insn insn;
+ uint64_t num;
+ insn.form = NULL;
-static int
-extract_value (num, oper, is_long)
- long long num;
- struct d30v_operand *oper;
- int is_long;
-{
- int val;
- int shift = 12 - oper->position;
- int mask = (0xFFFFFFFF >> (32 - oper->bits));
+ info->bytes_per_line = 8;
+ info->bytes_per_chunk = 4;
+ info->display_endian = BFD_ENDIAN_BIG;
- if (is_long)
+ 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