binutils-gdb/gdb/tahoe-tdep.c

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/* Print instructions for Tahoe target machines, for GDB.
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Copyright 1986, 1989, 1991, 1992 Free Software Foundation, Inc.
Contributed by the State University of New York at Buffalo, by the
Distributed Computer Systems Lab, Department of Computer Science, 1991.
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This file is part of GDB.
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.
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You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
#include "symtab.h"
#include "opcode/tahoe.h"
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/* Tahoe instructions are never longer than this. */
#define MAXLEN 62
/* Number of elements in the opcode table. */
#define NOPCODES (sizeof votstrs / sizeof votstrs[0])
static unsigned char *print_insn_arg ();
/* Print the Tahoe instruction at address MEMADDR in debugged memory,
on STREAM. Returns length of the instruction, in bytes. */
int
General cleanup and simplication of disassembler interface. * a29k-pinsn.c, arm-pinsn.c, convex-pinsn.c, gould-pinsn.c, hppa-pinsn.c, i386-pinsn.c, i960-pinsn.c, m68k-pinsn.c, m88k-pinsn.c, mips-pinsn.c, ns32k-pinsn.c, pyr-pinsn.c, rs6000-pinsn.c, sparc-pinsn.c, tahoe-pinsn.c, vax-pinsn.c: Remove. * gould-tdep.c, ns32k-tdep.c, tahoe-tdep.c, vax-tdep.c: New files, had been -pinsn.c files. * Makefile.in (ALLDEPFILES): Remove removed files. (a29k-pinsn.o, arm-pinsn.o, convex-pinsn.o, gould-pinsn.o, hppa-pinsn.o, i386-pinsn.o, i960-pinsn.o, m68k-pinsn.o, m88k-pinsn.o, mips-pinsn.o, ns32k-pinsn.o, pyr-pinsn.o, rs6000-pinsn.o, sparc-pinsn.o, tahoe-pinsn.o, vax-pinsn.o): Remove compile actions. * arm-tdep.o, gould-tdep.o, ns32k-tdep.o, tahoe-tdep.o, vax-tdep.o: Add compile actions. * defs.h (tm_print_insn): New global. * a29k-tdep.c (gdb_print_insn_a29k): New function. (_initialize_a29k_tdep): Rename from _initialize_29k, set tm_print_insn. * alpha-tdep.c (print_insn): Remove. (_initialize_alpha_tdep): Set tm_print_insn. * arm-tdep.c (arm_print_insn): New function, was print_insn in arm-pinsn.c. * convex-tdep.c (convex_print_insn): New function, was print_insn in convex-pinsn.c. * h8300-tdep.c (print_insn): Remove. (gdb_print_insn_h8300): New function. (_initialize_h8300_tdep): New function. * h8500-tdep.c (print_insn): Remove. (_initialize_h8500_tdep): New function. * hppa-tdep.c (_initialize_hppa_tdep): Set tm_print_insn. * i386-tdep.c (_initialize_i386_tdep): New function. * i960-tdep.c (mem, next_insn): New functions, were in i960-pinsn.c. (_initialize_i960_tdep): Set tm_print_insn. * m68k-tdep.c (_initialize_m68k_tdep): New function. * m88k-tdep.c (_initialize_m88k_tdep): New function. * mips-tdep.c (gdb_print_insn_mips): New function. (_initialize_mips_tdep): Set tm_print_insn. * pyr-tdep.c (pyr_print_insn): New function, was print_insn in pyr-pinsn.c. * rs6000-tdep.c (_initialize_rs6000_tdep): New function. * sh-tdep.c (print_insn): Remove. (gdb_print_insn_sh): New function. (_initialize_sh_tdep): Set tm_print_insn. * sparc-tdep.c (_initialize_sparc_tdep): New function. * w65-tdep.c (print_insn): Remove. (_initialize_w65_tdep): New function. * z8k-tdep.c (print_insn): Remove. (gdb_print_insn_z8k): New function. (_initialize_z8k_tdep): Set tm_print_insn. * printcmd.c (print_insn): New function, generic disassembler. * config/*/*.mt (TDEPFILES): Remove refs to *-pinsn.o. * defs.h (query_hook, error_hook): Fix prototypes.
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tahoe_print_insn (memaddr, stream)
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CORE_ADDR memaddr;
GDB_FILE *stream;
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{
unsigned char buffer[MAXLEN];
register int i;
register unsigned char *p;
register char *d;
read_memory (memaddr, buffer, MAXLEN);
for (i = 0; i < NOPCODES; i++)
if (votstrs[i].detail.code == buffer[0]
|| votstrs[i].detail.code == *(unsigned short *)buffer)
break;
/* Handle undefined instructions. */
if (i == NOPCODES)
{
fprintf_unfiltered (stream, "0%o", buffer[0]);
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return 1;
}
fprintf_unfiltered (stream, "%s", votstrs[i].name);
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/* Point at first byte of argument data,
and at descriptor for first argument. */
p = buffer + 1 + (votstrs[i].detail.code >= 0x100);
d = votstrs[i].detail.args;
if (*d)
fputc_unfiltered ('\t', stream);
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while (*d)
{
p = print_insn_arg (d, p, memaddr + (p - buffer), stream);
d += 2;
if (*d)
fprintf_unfiltered (stream, ",");
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}
return p - buffer;
}
/*******************************************************************/
static unsigned char *
print_insn_arg (d, p, addr, stream)
char *d;
register char *p;
CORE_ADDR addr;
GDB_FILE *stream;
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{
int temp1 = 0;
register int regnum = *p & 0xf;
float floatlitbuf;
if (*d == 'b')
{
if (d[1] == 'b')
fprintf_unfiltered (stream, "0x%x", addr + *p++ + 1);
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else
{
temp1 = *p;
temp1 <<= 8;
temp1 |= *(p + 1);
fprintf_unfiltered (stream, "0x%x", addr + temp1 + 2);
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p += 2;
}
}
else
switch ((*p++ >> 4) & 0xf)
{
case 0:
case 1:
case 2:
case 3: /* Literal (short immediate byte) mode */
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if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h')
{
*(int *)&floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4);
fprintf_unfiltered (stream, "$%f", floatlitbuf);
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}
else
fprintf_unfiltered (stream, "$%d", p[-1] & 0x3f);
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break;
case 4: /* Indexed */
p = (char *) print_insn_arg (d, p, addr + 1, stream);
fprintf_unfiltered (stream, "[%s]", reg_names[regnum]);
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break;
case 5: /* Register */
fprintf_unfiltered (stream, reg_names[regnum]);
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break;
case 7: /* Autodecrement */
fputc_unfiltered ('-', stream);
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case 6: /* Register deferred */
fprintf_unfiltered (stream, "(%s)", reg_names[regnum]);
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break;
case 9: /* Absolute Address & Autoincrement deferred */
fputc_unfiltered ('*', stream);
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if (regnum == PC_REGNUM)
{
temp1 = *p;
temp1 <<= 8;
temp1 |= *(p +1);
fputc_unfiltered ('$', stream);
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print_address (temp1, stream);
p += 4;
break;
}
case 8: /*Immediate & Autoincrement SP */
if (regnum == 8) /*88 is Immediate Byte Mode*/
fprintf_unfiltered (stream, "$%d", *p++);
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else if (regnum == 9) /*89 is Immediate Word Mode*/
{
temp1 = *p;
temp1 <<= 8;
temp1 |= *(p +1);
fprintf_unfiltered (stream, "$%d", temp1);
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p += 2;
}
else if (regnum == PC_REGNUM) /*8F is Immediate Long Mode*/
{
temp1 = *p;
temp1 <<=8;
temp1 |= *(p +1);
temp1 <<=8;
temp1 |= *(p +2);
temp1 <<= 8;
temp1 |= *(p +3);
fprintf_unfiltered (stream, "$%d", temp1);
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p += 4;
}
else /*8E is Autoincrement SP Mode*/
fprintf_unfiltered (stream, "(%s)+", reg_names[regnum]);
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break;
case 11: /* Register + Byte Displacement Deferred Mode*/
fputc_unfiltered ('*', stream);
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case 10: /* Register + Byte Displacement Mode*/
if (regnum == PC_REGNUM)
print_address (addr + *p + 2, stream);
else
fprintf_unfiltered (stream, "%d(%s)", *p, reg_names[regnum]);
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p += 1;
break;
case 13: /* Register + Word Displacement Deferred Mode*/
fputc_unfiltered ('*', stream);
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case 12: /* Register + Word Displacement Mode*/
temp1 = *p;
temp1 <<= 8;
temp1 |= *(p +1);
if (regnum == PC_REGNUM)
print_address (addr + temp1 + 3, stream);
else
fprintf_unfiltered (stream, "%d(%s)", temp1, reg_names[regnum]);
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p += 2;
break;
case 15: /* Register + Long Displacement Deferred Mode*/
fputc_unfiltered ('*', stream);
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case 14: /* Register + Long Displacement Mode*/
temp1 = *p;
temp1 <<= 8;
temp1 |= *(p +1);
temp1 <<= 8;
temp1 |= *(p +2);
temp1 <<= 8;
temp1 |= *(p +3);
if (regnum == PC_REGNUM)
print_address (addr + temp1 + 5, stream);
else
fprintf_unfiltered (stream, "%d(%s)", temp1, reg_names[regnum]);
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p += 4;
}
return (unsigned char *) p;
}