/* Disassemble V850 instructions.
- Copyright (C) 1996 Free Software Foundation, Inc.
+ Copyright 1996, 1997, 1998, 2000, 2001, 2002, 2003
+ 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 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 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 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.
-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. */
+ 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. */
#include <stdio.h>
-#include "ansidecl.h"
+#include "sysdep.h"
#include "opcode/v850.h"
#include "dis-asm.h"
+#include "opintl.h"
static const char *const v850_reg_names[] =
{ "r0", "r1", "r2", "sp", "gp", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
- "r24", "r25", "r26", "r27", "r28", "r29", "ep", "r31" };
+ "r24", "r25", "r26", "r27", "r28", "r29", "ep", "lp" };
static const char *const v850_sreg_names[] =
{ "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
- "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
+ "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
+ "ctpc", "ctpsw", "dbpc", "dbpsw", "ctbp", "sr21", "sr22", "sr23",
+ "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
"sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23",
"sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31" };
static const char *const v850_cc_names[] =
{ "v", "c/l", "z", "nh", "s/n", "t", "lt", "le",
- "nv", "nc/nl", "nz", "h", "ns/p", "sa", "lt", "ge",
- "le", "gt" };
+ "nv", "nc/nl", "nz", "h", "ns/p", "sa", "ge", "gt" };
-int
-print_insn_v850 (memaddr, info)
+static int disassemble
+ PARAMS ((bfd_vma, struct disassemble_info *, unsigned long));
+
+static int
+disassemble (memaddr, info, insn)
bfd_vma memaddr;
struct disassemble_info *info;
-{
- int status;
- bfd_byte buffer[4];
- unsigned long insn;
-
- status = (*info->read_memory_func) (memaddr, buffer, 4, info);
- if (status != 0)
- {
- (*info->memory_error_func) (status, memaddr, info);
- return -1;
- }
- insn = bfd_getl32 (buffer);
-
- disassemble (insn, info);
- if ((insn & 0x0600) == 0x0600)
- return 4;
- else
- return 2;
-}
-
-disassemble (insn, info)
unsigned long insn;
- struct disassemble_info *info;
{
struct v850_opcode *op = (struct v850_opcode *)v850_opcodes;
const struct v850_operand *operand;
int match = 0;
+ int short_op = ((insn & 0x0600) != 0x0600);
+ int bytes_read;
+ int target_processor;
+
+ /* Special case: 32 bit MOV */
+ if ((insn & 0xffe0) == 0x0620)
+ short_op = 1;
+
+ bytes_read = short_op ? 2 : 4;
+
/* If this is a two byte insn, then mask off the high bits. */
- if ((insn & 0x0600) != 0x0600)
+ if (short_op)
insn &= 0xffff;
+ switch (info->mach)
+ {
+ case 0:
+ default:
+ target_processor = PROCESSOR_V850;
+ break;
+
+ case bfd_mach_v850e:
+ target_processor = PROCESSOR_V850E;
+ break;
+
+ case bfd_mach_v850e1:
+ target_processor = PROCESSOR_V850E1;
+ break;
+ }
+
/* Find the opcode. */
while (op->name)
{
- if ((op->mask & insn) == op->opcode)
+ if ((op->mask & insn) == op->opcode
+ && (op->processors & target_processor))
{
const unsigned char *opindex_ptr;
+ unsigned int opnum;
+ unsigned int memop;
match = 1;
(*info->fprintf_func) (info->stream, "%s\t", op->name);
+/*fprintf (stderr, "match: mask: %x insn: %x, opcode: %x, name: %s\n", op->mask, insn, op->opcode, op->name );*/
- /* Now print the operands. */
- for (opindex_ptr = op->operands; *opindex_ptr != 0; opindex_ptr++)
- {
- unsigned long value;
+ memop = op->memop;
+ /* Now print the operands.
- operand = &v850_operands[*opindex_ptr];
+ MEMOP is the operand number at which a memory
+ address specification starts, or zero if this
+ instruction has no memory addresses.
+
+ A memory address is always two arguments.
+ This information allows us to determine when to
+ insert commas into the output stream as well as
+ when to insert disp[reg] expressions onto the
+ output stream. */
+
+ for (opindex_ptr = op->operands, opnum = 1;
+ *opindex_ptr != 0;
+ opindex_ptr++, opnum++)
+ {
+ long value;
+ int flag;
+ int status;
+ bfd_byte buffer[4];
+
+ operand = &v850_operands[*opindex_ptr];
+
if (operand->extract)
value = (operand->extract) (insn, 0);
else
- value = (insn >> operand->shift) & ((1 << operand->bits) - 1);
-
- if ((operand->flags & V850_OPERAND_SIGNED) != 0)
- value = ((signed long)(value << (32 - operand->bits))
- >> (32 - operand->bits));
- if ((operand->flags & V850_OPERAND_REG) != 0)
- (*info->fprintf_func) (info->stream, "%s",
- v850_reg_names[value]);
- else if ((operand->flags & V850_OPERAND_SRG) != 0)
- (*info->fprintf_func) (info->stream, "%s",
- v850_sreg_names[value]);
- else if ((operand->flags & V850_OPERAND_CC) != 0)
- (*info->fprintf_func) (info->stream, "%s",
- v850_cc_names[value]);
- else if ((operand->flags & V850_OPERAND_EP) != 0)
- (*info->fprintf_func) (info->stream, "ep");
- else
- (*info->fprintf_func) (info->stream, "%d", value);
+ {
+ if (operand->bits == -1)
+ value = (insn & operand->shift);
+ else
+ value = (insn >> operand->shift) & ((1 << operand->bits) - 1);
+
+ if (operand->flags & V850_OPERAND_SIGNED)
+ value = ((long)(value << (32 - operand->bits))
+ >> (32 - operand->bits));
+ }
+
+ /* The first operand is always output without any
+ special handling.
+
+ For the following arguments:
+
+ If memop && opnum == memop + 1, then we need '[' since
+ we're about to output the register used in a memory
+ reference.
+
+ If memop && opnum == memop + 2, then we need ']' since
+ we just finished the register in a memory reference. We
+ also need a ',' before this operand.
+
+ Else we just need a comma.
+
+ We may need to output a trailing ']' if the last operand
+ in an instruction is the register for a memory address.
+
+ The exception (and there's always an exception) is the
+ "jmp" insn which needs square brackets around it's only
+ register argument. */
+
+ if (memop && opnum == memop + 1) info->fprintf_func (info->stream, "[");
+ else if (memop && opnum == memop + 2) info->fprintf_func (info->stream, "],");
+ else if (memop == 1 && opnum == 1
+ && (operand->flags & V850_OPERAND_REG))
+ info->fprintf_func (info->stream, "[");
+ else if (opnum > 1) info->fprintf_func (info->stream, ", ");
+
+ /* extract the flags, ignorng ones which do not effect disassembly output. */
+ flag = operand->flags;
+ flag &= ~ V850_OPERAND_SIGNED;
+ flag &= ~ V850_OPERAND_RELAX;
+ flag &= - flag;
+
+ switch (flag)
+ {
+ case V850_OPERAND_REG: info->fprintf_func (info->stream, "%s", v850_reg_names[value]); break;
+ case V850_OPERAND_SRG: info->fprintf_func (info->stream, "%s", v850_sreg_names[value]); break;
+ case V850_OPERAND_CC: info->fprintf_func (info->stream, "%s", v850_cc_names[value]); break;
+ case V850_OPERAND_EP: info->fprintf_func (info->stream, "ep"); break;
+ default: info->fprintf_func (info->stream, "%d", value); break;
+ case V850_OPERAND_DISP:
+ {
+ bfd_vma addr = value + memaddr;
+
+ /* On the v850 the top 8 bits of an address are used by an overlay manager.
+ Thus it may happen that when we are looking for a symbol to match
+ against an address with some of its top bits set, the search fails to
+ turn up an exact match. In this case we try to find an exact match
+ against a symbol in the lower address space, and if we find one, we
+ use that address. We only do this for JARL instructions however, as
+ we do not want to misinterpret branch instructions. */
+ if (operand->bits == 22)
+ {
+ if ( ! info->symbol_at_address_func (addr, info)
+ && ((addr & 0xFF000000) != 0)
+ && info->symbol_at_address_func (addr & 0x00FFFFFF, info))
+ {
+ addr &= 0x00FFFFFF;
+ }
+ }
+ info->print_address_func (addr, info);
+ break;
+ }
+
+ case V850E_PUSH_POP:
+ {
+ static int list12_regs[32] = { 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 };
+ static int list18_h_regs[32] = { 19, 18, 17, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 30, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 };
+ static int list18_l_regs[32] = { 3, 2, 1, -2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 14, 15, 13, 12, 7, 6, 5, 4, 11, 10, 9, 8 };
+ int *regs;
+ int i;
+ unsigned long int mask = 0;
+ int pc = 0;
+ int sr = 0;
+
+
+ switch (operand->shift)
+ {
+ case 0xffe00001: regs = list12_regs; break;
+ case 0xfff8000f: regs = list18_h_regs; break;
+ case 0xfff8001f: regs = list18_l_regs; value &= ~0x10; break; /* Do not include magic bit */
+ default:
+ /* xgettext:c-format */
+ fprintf (stderr, _("unknown operand shift: %x\n"), operand->shift );
+ abort();
+ }
+
+ for (i = 0; i < 32; i++)
+ {
+ if (value & (1 << i))
+ {
+ switch (regs[ i ])
+ {
+ default: mask |= (1 << regs[ i ]); break;
+ /* xgettext:c-format */
+ case 0: fprintf (stderr, _("unknown pop reg: %d\n"), i ); abort();
+ case -1: pc = 1; break;
+ case -2: sr = 1; break;
+ }
+ }
+ }
+
+ info->fprintf_func (info->stream, "{");
+
+ if (mask || pc || sr)
+ {
+ if (mask)
+ {
+ unsigned int bit;
+ int shown_one = 0;
+
+ for (bit = 0; bit < 32; bit++)
+ if (mask & (1 << bit))
+ {
+ unsigned long int first = bit;
+ unsigned long int last;
+
+ if (shown_one)
+ info->fprintf_func (info->stream, ", ");
+ else
+ shown_one = 1;
+
+ info->fprintf_func (info->stream, v850_reg_names[first]);
+
+ for (bit++; bit < 32; bit++)
+ if ((mask & (1 << bit)) == 0)
+ break;
+
+ last = bit;
+
+ if (last > first + 1)
+ {
+ info->fprintf_func (info->stream, " - %s", v850_reg_names[ last - 1 ]);
+ }
+ }
+ }
+
+ if (pc)
+ info->fprintf_func (info->stream, "%sPC", mask ? ", " : "");
+ if (sr)
+ info->fprintf_func (info->stream, "%sSR", (mask || pc) ? ", " : "");
+ }
+
+ info->fprintf_func (info->stream, "}");
+ }
+ break;
+
+ case V850E_IMMEDIATE16:
+ status = info->read_memory_func (memaddr + bytes_read, buffer, 2, info);
+ if (status == 0)
+ {
+ bytes_read += 2;
+ value = bfd_getl16 (buffer);
+
+ /* If this is a DISPOSE instruction with ff set to 0x10, then shift value up by 16. */
+ if ((insn & 0x001fffc0) == 0x00130780)
+ value <<= 16;
+
+ info->fprintf_func (info->stream, "0x%x", value);
+ }
+ else
+ {
+ info->memory_error_func (status, memaddr + bytes_read, info);
+ }
+ break;
+
+ case V850E_IMMEDIATE32:
+ status = info->read_memory_func (memaddr + bytes_read, buffer, 4, info);
+ if (status == 0)
+ {
+ bytes_read += 4;
+ value = bfd_getl32 (buffer);
+ info->fprintf_func (info->stream, "0x%lx", value);
+ }
+ else
+ {
+ info->memory_error_func (status, memaddr + bytes_read, info);
+ }
+ break;
+ }
+
+ /* Handle jmp correctly. */
+ if (memop == 1 && opnum == 1
+ && ((operand->flags & V850_OPERAND_REG) != 0))
+ (*info->fprintf_func) (info->stream, "]");
}
+ /* Close any square bracket we left open. */
+ if (memop && opnum == memop + 2)
+ (*info->fprintf_func) (info->stream, "]");
+
/* All done. */
break;
}
if (!match)
{
- if ((insn & 0x0600) != 0x0600)
- (*info->fprintf_func) (info->stream, ".short\t0x%04x", insn);
+ if (short_op)
+ info->fprintf_func (info->stream, ".short\t0x%04x", insn);
else
- (*info->fprintf_func) (info->stream, ".long\t0x%08x", insn);
+ info->fprintf_func (info->stream, ".long\t0x%08x", insn);
+ }
+
+ return bytes_read;
+}
+
+int
+print_insn_v850 (memaddr, info)
+ bfd_vma memaddr;
+ struct disassemble_info * info;
+{
+ int status;
+ bfd_byte buffer[4];
+ unsigned long insn = 0;
+
+ /* First figure out how big the opcode is. */
+
+ status = info->read_memory_func (memaddr, buffer, 2, info);
+ if (status == 0)
+ {
+ insn = bfd_getl16 (buffer);
+
+ if ( (insn & 0x0600) == 0x0600
+ && (insn & 0xffe0) != 0x0620)
+ {
+ /* If this is a 4 byte insn, read 4 bytes of stuff. */
+ status = info->read_memory_func (memaddr, buffer, 4, info);
+
+ if (status == 0)
+ insn = bfd_getl32 (buffer);
+ }
+ }
+
+ if (status != 0)
+ {
+ info->memory_error_func (status, memaddr, info);
+ return -1;
}
+
+ /* Make sure we tell our caller how many bytes we consumed. */
+ return disassemble (memaddr, info, insn);
}
projects / deliverable / binutils-gdb.git / blobdiff