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-rw-r--r--opcodes/h8300-dis.c457
1 files changed, 457 insertions, 0 deletions
diff --git a/opcodes/h8300-dis.c b/opcodes/h8300-dis.c
new file mode 100644
index 0000000..57753a9
--- /dev/null
+++ b/opcodes/h8300-dis.c
@@ -0,0 +1,457 @@
+/* Disassemble h8300 instructions.
+ Copyright (C) 1993, 1998 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 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. */
+
+#define DEFINE_TABLE
+
+#define h8_opcodes h8ops
+#include "opcode/h8300.h"
+#include "dis-asm.h"
+#include "opintl.h"
+
+
+/* Run through the opcodes and sort them into order to make them easy
+ to disassemble
+ */
+static void
+bfd_h8_disassemble_init ()
+{
+ unsigned int i;
+
+
+ struct h8_opcode *p;
+
+ for (p = h8_opcodes; p->name; p++)
+ {
+ int n1 = 0;
+ int n2 = 0;
+
+ if ((int) p->data.nib[0] < 16)
+ {
+ n1 = (int) p->data.nib[0];
+ }
+ else
+ n1 = 0;
+ if ((int) p->data.nib[1] < 16)
+ {
+ n2 = (int) p->data.nib[1];
+ }
+ else
+ n2 = 0;
+
+ /* Just make sure there are an even number of nibbles in it, and
+ that the count is the same s the length */
+ for (i = 0; p->data.nib[i] != E; i++)
+ /*EMPTY*/ ;
+ if (i & 1)
+ abort ();
+ p->length = i / 2;
+ }
+
+}
+
+
+unsigned int
+bfd_h8_disassemble (addr, info, mode)
+ bfd_vma addr;
+ disassemble_info *info;
+ int mode;
+{
+ /* Find the first entry in the table for this opcode */
+ static CONST char *regnames[] =
+ {
+ "r0h", "r1h", "r2h", "r3h", "r4h", "r5h", "r6h", "r7h",
+ "r0l", "r1l", "r2l", "r3l", "r4l", "r5l", "r6l", "r7l"};
+
+ static CONST char *wregnames[] =
+ {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7"
+ };
+
+ static CONST char *lregnames[] =
+ {
+ "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7",
+ "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7"
+ }
+ ;
+
+ int rs = 0;
+ int rd = 0;
+ int rdisp = 0;
+ int abs = 0;
+ int bit = 0;
+ int plen = 0;
+ static boolean init = 0;
+ struct h8_opcode *q = h8_opcodes;
+ char CONST **pregnames = mode != 0 ? lregnames : wregnames;
+ int status;
+ int l;
+
+ unsigned char data[20];
+ void *stream = info->stream;
+ fprintf_ftype fprintf = info->fprintf_func;
+
+ if (!init)
+ {
+ bfd_h8_disassemble_init ();
+ init = 1;
+ }
+
+ status = info->read_memory_func(addr, data, 2, info);
+ if (status != 0)
+ {
+ info->memory_error_func(status, addr, info);
+ return -1;
+ }
+ for (l = 2; status == 0 && l < 10; l+=2)
+ {
+ status = info->read_memory_func(addr+l, data+l, 2, info);
+ }
+
+
+
+ /* Find the exact opcode/arg combo */
+ while (q->name)
+ {
+ op_type *nib;
+ unsigned int len = 0;
+
+ nib = q->data.nib;
+
+ while (1)
+ {
+ op_type looking_for = *nib;
+ int thisnib = data[len >> 1];
+
+ thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf);
+
+ if (looking_for < 16 && looking_for >=0)
+ {
+
+ if (looking_for != thisnib)
+ goto fail;
+ }
+
+ else
+ {
+
+ if ((int) looking_for & (int) B31)
+ {
+ if (! (((int) thisnib & 0x8) != 0))
+ goto fail;
+ looking_for = (op_type) ((int) looking_for & ~(int) B31);
+ }
+ if ((int) looking_for & (int) B30)
+ {
+ if (!(((int) thisnib & 0x8) == 0))
+ goto fail;
+ looking_for = (op_type) ((int) looking_for & ~(int) B30);
+ }
+
+ if (looking_for & DBIT)
+ {
+ if ((looking_for & 5) != (thisnib &5)) goto fail;
+ abs = (thisnib & 0x8) ? 2 : 1;
+ }
+
+ else if (looking_for & (REG | IND|INC|DEC))
+ {
+ if (looking_for & SRC)
+ {
+ rs = thisnib;
+ }
+ else
+ {
+ rd = thisnib;
+ }
+ }
+ else if (looking_for & L_16)
+ {
+ abs = (data[len >> 1]) * 256 + data[(len + 2) >> 1];
+ plen = 16;
+
+ }
+ else if(looking_for & ABSJMP)
+ {
+ abs =
+ (data[1] << 16)
+ | (data[2] << 8)
+ | (data[3]);
+ }
+ else if(looking_for & MEMIND)
+ {
+ abs = data[1];
+ }
+ else if (looking_for & L_32)
+ {
+ int i = len >> 1;
+ abs = (data[i] << 24)
+ | (data[i + 1] << 16)
+ | (data[i + 2] << 8)
+ | (data[i+ 3]);
+
+ plen =32;
+
+ }
+ else if (looking_for & L_24)
+ {
+ int i = len >> 1;
+ abs = (data[i] << 16) | (data[i + 1] << 8)| (data[i+2]);
+ plen =24;
+ }
+ else if (looking_for & IGNORE)
+ {
+
+ }
+ else if (looking_for & DISPREG)
+ {
+ rdisp = thisnib;
+ }
+ else if (looking_for & KBIT)
+ {
+ switch (thisnib)
+ {
+ case 9:
+ abs = 4;
+ break;
+ case 8:
+ abs = 2;
+ break;
+ case 0:
+ abs = 1;
+ break;
+ default:
+ goto fail;
+ }
+ }
+ else if (looking_for & L_8)
+ {
+ plen = 8;
+ abs = data[len >> 1];
+ }
+ else if (looking_for & L_3)
+ {
+ bit = thisnib & 0x7;
+ }
+ else if (looking_for & L_2)
+ {
+ plen = 2;
+ abs = thisnib & 0x3;
+ }
+ else if (looking_for & MACREG)
+ {
+ abs = (thisnib == 3);
+ }
+ else if (looking_for == E)
+ {
+
+ {
+ int i;
+
+ for (i = 0; i < q->length; i++)
+ {
+ fprintf (stream, "%02x ", data[i]);
+ }
+ for (; i < 6; i++)
+ {
+ fprintf (stream, " ");
+ }
+ }
+ fprintf (stream, "%s\t", q->name);
+
+ /* Gross. Disgusting. */
+ if (strcmp (q->name, "ldm.l") == 0)
+ {
+ int count, high;
+
+ count = (data[1] >> 4) & 0x3;
+ high = data[3] & 0x7;
+
+ fprintf (stream, "@sp+,er%d-er%d", high - count, high);
+ return q->length;
+ }
+
+ if (strcmp (q->name, "stm.l") == 0)
+ {
+ int count, low;
+
+ count = (data[1] >> 4) & 0x3;
+ low = data[3] & 0x7;
+
+ fprintf (stream, "er%d-er%d,@-sp", low, low + count);
+ return q->length;
+ }
+
+ /* Fill in the args */
+ {
+ op_type *args = q->args.nib;
+ int hadone = 0;
+
+
+ while (*args != E)
+ {
+ int x = *args;
+ if (hadone)
+ fprintf (stream, ",");
+
+
+ if (x & L_3)
+ {
+ fprintf (stream, "#0x%x", (unsigned) bit);
+ }
+ else if (x & (IMM|KBIT|DBIT))
+ {
+ /* Bletch. For shal #2,er0 and friends. */
+ if (*(args+1) & SRC_IN_DST)
+ abs = 2;
+
+ fprintf (stream, "#0x%x", (unsigned) abs);
+ }
+ else if (x & REG)
+ {
+ int rn = (x & DST) ? rd : rs;
+ switch (x & SIZE)
+ {
+ case L_8:
+ fprintf (stream, "%s", regnames[rn]);
+ break;
+ case L_16:
+ fprintf (stream, "%s", wregnames[rn]);
+ break;
+ case L_P:
+ case L_32:
+ fprintf (stream, "%s", lregnames[rn]);
+ break;
+
+ }
+ }
+ else if (x & MACREG)
+ {
+ fprintf (stream, "mac%c", abs ? 'l' : 'h');
+ }
+ else if (x & INC)
+ {
+ fprintf (stream, "@%s+", pregnames[rs]);
+ }
+ else if (x & DEC)
+ {
+ fprintf (stream, "@-%s", pregnames[rd]);
+ }
+
+ else if (x & IND)
+ {
+ int rn = (x & DST) ? rd : rs;
+ fprintf (stream, "@%s", pregnames[rn]);
+ }
+
+ else if (x & ABS8MEM)
+ {
+ fprintf (stream, "@0x%x:8", (unsigned) abs);
+ }
+
+ else if (x & (ABS|ABSJMP))
+ {
+ fprintf (stream, "@0x%x:%d", (unsigned) abs, plen);
+ }
+
+ else if (x & MEMIND)
+ {
+ fprintf (stream, "@@%d (%x)", abs, abs);
+ }
+
+ else if (x & PCREL)
+ {
+ if (x & L_16)
+ {
+ abs +=2;
+ fprintf (stream, ".%s%d (%x)", (short) abs > 0 ? "+" : "", (short) abs,
+ addr + (short) abs + 2);
+ }
+ else {
+ fprintf (stream, ".%s%d (%x)", (char) abs > 0 ? "+" : "", (char) abs,
+ addr + (char) abs + 2);
+ }
+ }
+ else if (x & DISP)
+ {
+ fprintf (stream, "@(0x%x:%d,%s)", abs,plen, pregnames[rdisp]);
+ }
+
+ else if (x & CCR)
+ {
+ fprintf (stream, "ccr");
+ }
+ else if (x & EXR)
+ {
+ fprintf (stream, "exr");
+ }
+ else
+ /* xgettext:c-format */
+ fprintf (stream, _("Hmmmm %x"), x);
+ hadone = 1;
+ args++;
+ }
+ }
+ return q->length;
+ }
+
+
+ else
+ {
+ /* xgettext:c-format */
+ fprintf (stream, _("Don't understand %x \n"), looking_for);
+ }
+ }
+
+ len++;
+ nib++;
+ }
+
+ fail:
+ q++;
+ }
+
+ /* Fell of the end */
+ fprintf (stream, "%02x %02x .word\tH'%x,H'%x",
+ data[0], data[1],
+ data[0], data[1]);
+ return 2;
+}
+
+int
+print_insn_h8300 (addr, info)
+bfd_vma addr;
+disassemble_info *info;
+{
+ return bfd_h8_disassemble (addr, info , 0);
+}
+
+int
+print_insn_h8300h (addr, info)
+bfd_vma addr;
+disassemble_info *info;
+{
+ return bfd_h8_disassemble (addr, info , 1);
+}
+
+int
+print_insn_h8300s (addr, info)
+bfd_vma addr;
+disassemble_info *info;
+{
+ return bfd_h8_disassemble (addr, info , 2);
+}
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