/* Print Motorola 68k instructions.
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+ 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
Free Software Foundation, Inc.
- This file 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
val = (buffer[1] >> 6);
break;
+ case 'E':
+ FETCH_DATA (info, buffer + 3);
+ val = (buffer[2] >> 1);
+ break;
+
case 'm':
val = (buffer[1] & 0x40 ? 0x8 : 0)
| ((buffer[0] >> 1) & 0x7)
abort ();
}
- switch (bits)
- {
- case 1:
- return val & 1;
- case 2:
- return val & 3;
- case 3:
- return val & 7;
- case 4:
- return val & 017;
- case 5:
- return val & 037;
- case 6:
- return val & 077;
- case 7:
- return val & 0177;
- case 8:
- return val & 0377;
- case 12:
- return val & 07777;
- default:
- abort ();
- }
+ /* bits is never too big. */
+ return val & ((1 << bits) - 1);
}
/* Check if an EA is valid for a particular code. This is required
{"%dtt0",0x006}, {"%dtt1",0x007}, {"%buscr",0x008},
{"%usp", 0x800}, {"%vbr", 0x801}, {"%caar", 0x802},
{"%msp", 0x803}, {"%isp", 0x804},
- {"%flashbar", 0xc04}, {"%rambar", 0xc05}, /* mcf528x added these. */
+ /* reg c04 is sometimes called flashbar or rambar.
+ rec c05 is also sometimes called rambar. */
+ {"%rambar0", 0xc04}, {"%rambar1", 0xc05},
/* Should we be calling this psr like we do in case 'Y'? */
{"%mmusr",0x805},
- {"%urp", 0x806}, {"%srp", 0x807}, {"%pcr", 0x808}};
+ {"%urp", 0x806}, {"%srp", 0x807}, {"%pcr", 0x808},
+
+ /* Fido added these. */
+ {"%cac", 0xffe}, {"%mbb", 0xfff}};
val = fetch_arg (buffer, place, 12, info);
for (regno = sizeof names / sizeof names[0] - 1; regno >= 0; regno--)
(*info->fprintf_func) (info->stream, "#%d", val);
break;
+ case 'j':
+ val = fetch_arg (buffer, place, 3, info);
+ (*info->fprintf_func) (info->stream, "#%d", val+1);
+ break;
+
+ case 'K':
+ val = fetch_arg (buffer, place, 9, info);
+ (*info->fprintf_func) (info->stream, "#%d", val);
+ break;
+
case 'M':
if (place == 'h')
{
static int
match_insn_m68k (bfd_vma memaddr,
disassemble_info * info,
- const struct m68k_opcode * best,
- struct private * priv)
+ const struct m68k_opcode * best)
{
unsigned char *save_p;
unsigned char *p;
const char *d;
+ const char *args = best->args;
+ struct private *priv = (struct private *) info->private_data;
bfd_byte *buffer = priv->the_buffer;
fprintf_ftype save_printer = info->fprintf_func;
void (* save_print_address) (bfd_vma, struct disassemble_info *)
= info->print_address_func;
+ if (*args == '.')
+ args++;
+
/* Point at first word of argument data,
and at descriptor for first argument. */
p = buffer + 2;
The only place this is stored in the opcode table is
in the arguments--look for arguments which specify fields in the 2nd
or 3rd words of the instruction. */
- for (d = best->args; *d; d += 2)
+ for (d = args; *d; d += 2)
{
/* I don't think it is necessary to be checking d[0] here;
I suspect all this could be moved to the case statement below. */
three words long. */
if (p - buffer < 6
&& (best->match & 0xffff) == 0xffff
- && best->args[0] == '#'
- && best->args[1] == 'w')
+ && args[0] == '#'
+ && args[1] == 'w')
{
/* Copy the one word argument into the usual location for a one
word argument, to simplify printing it. We can get away with
FETCH_DATA (info, p);
- d = best->args;
-
save_p = p;
info->print_address_func = dummy_print_address;
info->fprintf_func = (fprintf_ftype) dummy_printer;
/* We scan the operands twice. The first time we don't print anything,
but look for errors. */
- for (; *d; d += 2)
+ for (d = args; *d; d += 2)
{
int eaten = print_insn_arg (d, buffer, p, memaddr + (p - buffer), info);
}
else
{
+ /* We must restore the print functions before trying to print the
+ error message. */
+ info->fprintf_func = save_printer;
+ info->print_address_func = save_print_address;
info->fprintf_func (info->stream,
/* xgettext:c-format */
_("<internal error in opcode table: %s %s>\n"),
best->name, best->args);
- info->fprintf_func = save_printer;
- info->print_address_func = save_print_address;
return 2;
}
}
info->fprintf_func = save_printer;
info->print_address_func = save_print_address;
- d = best->args;
+ d = args;
info->fprintf_func (info->stream, "%s", best->name);
return p - buffer;
}
-/* Print the m68k instruction at address MEMADDR in debugged memory,
- on INFO->STREAM. Returns length of the instruction, in bytes. */
+/* Try to interpret the instruction at address MEMADDR as one that
+ can execute on a processor with the features given by ARCH_MASK.
+ If successful, print the instruction to INFO->STREAM and return
+ its length in bytes. Return 0 otherwise. */
-int
-print_insn_m68k (bfd_vma memaddr, disassemble_info *info)
+static int
+m68k_scan_mask (bfd_vma memaddr, disassemble_info *info,
+ unsigned int arch_mask)
{
int i;
const char *d;
- unsigned int arch_mask;
- struct private priv;
- bfd_byte *buffer = priv.the_buffer;
- int major_opcode;
- static int numopcodes[16];
static const struct m68k_opcode **opcodes[16];
+ static int numopcodes[16];
int val;
+ int major_opcode;
+
+ struct private *priv = (struct private *) info->private_data;
+ bfd_byte *buffer = priv->the_buffer;
if (!opcodes[0])
{
*opc_pointer[(m68k_opcodes[i].opcode >> 28) & 15]++ = &m68k_opcodes[i];
}
- info->private_data = (PTR) &priv;
- /* Tell objdump to use two bytes per chunk
- and six bytes per line for displaying raw data. */
- info->bytes_per_chunk = 2;
- info->bytes_per_line = 6;
- info->display_endian = BFD_ENDIAN_BIG;
- priv.max_fetched = priv.the_buffer;
- priv.insn_start = memaddr;
-
- if (setjmp (priv.bailout) != 0)
- /* Error return. */
- return -1;
-
- switch (info->mach)
- {
- default:
- case 0:
- arch_mask = (unsigned int) -1;
- break;
- case bfd_mach_m68000:
- arch_mask = m68000|m68881|m68851;
- break;
- case bfd_mach_m68008:
- arch_mask = m68008|m68881|m68851;
- break;
- case bfd_mach_m68010:
- arch_mask = m68010|m68881|m68851;
- break;
- case bfd_mach_m68020:
- arch_mask = m68020|m68881|m68851;
- break;
- case bfd_mach_m68030:
- arch_mask = m68030|m68881|m68851;
- break;
- case bfd_mach_m68040:
- arch_mask = m68040|m68881|m68851;
- break;
- case bfd_mach_m68060:
- arch_mask = m68060|m68881|m68851;
- break;
- case bfd_mach_mcf5200:
- arch_mask = mcfisa_a;
- break;
- case bfd_mach_mcf521x:
- case bfd_mach_mcf528x:
- arch_mask = mcfisa_a|mcfhwdiv|mcfisa_aa|mcfusp|mcfemac;
- break;
- case bfd_mach_mcf5206e:
- arch_mask = mcfisa_a|mcfhwdiv|mcfmac;
- break;
- case bfd_mach_mcf5249:
- arch_mask = mcfisa_a|mcfhwdiv|mcfemac;
- break;
- case bfd_mach_mcf5307:
- arch_mask = mcfisa_a|mcfhwdiv|mcfmac;
- break;
- case bfd_mach_mcf5407:
- arch_mask = mcfisa_a|mcfhwdiv|mcfisa_b|mcfmac;
- break;
- case bfd_mach_mcf547x:
- case bfd_mach_mcf548x:
- case bfd_mach_mcfv4e:
- arch_mask = mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat|mcfemac;
- break;
- }
-
FETCH_DATA (info, buffer + 2);
major_opcode = (buffer[0] >> 4) & 15;
const struct m68k_opcode *opc = opcodes[major_opcode][i];
unsigned long opcode = opc->opcode;
unsigned long match = opc->match;
+ const char *args = opc->args;
+
+ if (*args == '.')
+ args++;
if (((0xff & buffer[0] & (match >> 24)) == (0xff & (opcode >> 24)))
&& ((0xff & buffer[1] & (match >> 16)) == (0xff & (opcode >> 16)))
/* Don't use for printout the variants of divul and divsl
that have the same register number in two places.
The more general variants will match instead. */
- for (d = opc->args; *d; d += 2)
+ for (d = args; *d; d += 2)
if (d[1] == 'D')
break;
point coprocessor instructions which use the same
register number in two places, as above. */
if (*d == '\0')
- for (d = opc->args; *d; d += 2)
+ for (d = args; *d; d += 2)
if (d[1] == 't')
break;
wait for fmoveml. */
if (*d == '\0')
{
- for (d = opc->args; *d; d += 2)
+ for (d = args; *d; d += 2)
{
if (d[0] == 's' && d[1] == '8')
{
/* Don't match FPU insns with non-default coprocessor ID. */
if (*d == '\0')
{
- for (d = opc->args; *d; d += 2)
+ for (d = args; *d; d += 2)
{
if (d[0] == 'I')
{
}
if (*d == '\0')
- if ((val = match_insn_m68k (memaddr, info, opc, & priv)))
+ if ((val = match_insn_m68k (memaddr, info, opc)))
return val;
}
}
+ return 0;
+}
+
+/* Print the m68k instruction at address MEMADDR in debugged memory,
+ on INFO->STREAM. Returns length of the instruction, in bytes. */
+
+int
+print_insn_m68k (bfd_vma memaddr, disassemble_info *info)
+{
+ unsigned int arch_mask;
+ struct private priv;
+ int val;
+
+ bfd_byte *buffer = priv.the_buffer;
+
+ /* Save these printing functions in case we need to restore them
+ later. */
+ fprintf_ftype save_printer = info->fprintf_func;
+ void (* save_print_address) (bfd_vma, struct disassemble_info *)
+ = info->print_address_func;
+
+ info->private_data = (PTR) &priv;
+ /* Tell objdump to use two bytes per chunk
+ and six bytes per line for displaying raw data. */
+ info->bytes_per_chunk = 2;
+ info->bytes_per_line = 6;
+ info->display_endian = BFD_ENDIAN_BIG;
+ priv.max_fetched = priv.the_buffer;
+ priv.insn_start = memaddr;
+
+ if (setjmp (priv.bailout) != 0)
+ {
+ /* longjmp may be called while these printing functions are
+ temporarily replaced with dummy functions. Restore them
+ before we leave.
+
+ Admittedly, this save-and-restore operation is somewhat ugly
+ in that we are exposing the fact that match_insn_m68k
+ temporarily replaces insn->fprintf_func and
+ insn->print_address_func. Perhaps, a real fix is to report a
+ FETCH_DATA failure with a return value of some sort, without
+ using setjmp/longjmp. A better fix may be to teach the m68k
+ disassembler do its job without temporarily replacing
+ insn->fprintf_func and insn->print_address_func, but that's a
+ task for another day. */
+ info->fprintf_func = save_printer;
+ info->print_address_func = save_print_address;
+
+ /* Error return. */
+ return -1;
+ }
+
+ arch_mask = bfd_m68k_mach_to_features (info->mach);
+ if (!arch_mask)
+ {
+ /* First try printing an m680x0 instruction. Try printing a Coldfire
+ one if that fails. */
+ val = m68k_scan_mask (memaddr, info, m68k_mask);
+ if (val)
+ return val;
+
+ val = m68k_scan_mask (memaddr, info, mcf_mask);
+ if (val)
+ return val;
+ }
+ else
+ {
+ val = m68k_scan_mask (memaddr, info, arch_mask);
+ if (val)
+ return val;
+ }
/* Handle undefined instructions. */
info->fprintf_func (info->stream, "0%o", (buffer[0] << 8) + buffer[1]);
projects / deliverable / binutils-gdb.git / blobdiff