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* m68hc11-dis.c (print_insn): Fix disassembly of movb with a 

constant as source.
This commit is contained in:
Stephane Carrez 2001-11-01 09:48:57 +00:00
parent 86c76c7be0
commit 64e38312bc
2 changed files with 38 additions and 9 deletions
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5
opcodes/ChangeLog
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@ -1,3 +1,8 @@
2001-11-01 Stephane Carrez <Stephane.Carrez@worldnet.fr>
* m68hc11-dis.c (print_insn): Fix disassembly of movb with a
constant as source.
2001-10-30 Hans-Peter Nilsson <hp@bitrange.com>
* Makefile.am (CFILES): Add mmix-dis.c and mmix-opc.c. Regenerate

42
opcodes/m68hc11-dis.c
View File

@ -366,14 +366,35 @@ print_insn (memaddr, info, arch)
(*info->fprintf_func) (info->stream, "\t");
}
/* The movb and movw must be handled in a special way... */
offset = 0;
if (format & (M6812_OP_IDX_P2 | M6812_OP_IND16_P2))
{
if ((format & M6812_OP_IDX_P2)
&& (format & (M6811_OP_IMM8 | M6811_OP_IMM16 | M6811_OP_IND16)))
offset = 1;
}
/* The movb and movw must be handled in a special way...
The source constant 'ii' is not always at the same place.
This is the same for the destination for the post-indexed byte.
The 'offset' is used to do the appropriate correction.
offset offset
for constant for destination
movb 18 OB ii hh ll 0 0
18 08 xb ii 1 -1
18 0C hh ll hh ll 0 0
18 09 xb hh ll 1 -1
18 0D xb hh ll 0 0
18 0A xb xb 0 0
movw 18 03 jj kk hh ll 0 0
18 00 xb jj kk 1 -1
18 04 hh ll hh ll 0 0
18 01 xb hh ll 1 -1
18 05 xb hh ll 0 0
18 02 xb xb 0 0
After the source operand is read, the position 'pos' is incremented
this explains the negative offset for destination.
movb/movw above are the only instructions with this matching
format. */
offset = ((format & M6812_OP_IDX_P2)
&& (format & (M6811_OP_IMM8 | M6811_OP_IMM16 |
M6811_OP_IND16)));
/* Operand with one more byte: - immediate, offset,
direct-low address. */
@ -387,7 +408,10 @@ print_insn (memaddr, info, arch)
}
pos++;
offset = -1;
/* This movb/movw is special (see above). */
offset = -offset;
if (format & M6811_OP_IMM8)
{
(*info->fprintf_func) (info->stream, "#%d", (int) buffer[0]);