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[PATCH] opcodes: blackfin: decode all ASTAT bits
- From: Mike Frysinger <vapier at gentoo dot org>
- To: binutils at sourceware dot org
- Date: Tue, 21 Sep 2010 04:48:45 -0400
- Subject: [PATCH] opcodes: blackfin: decode all ASTAT bits
All ASTAT bits work in the hardware even though they aren't part of the
official Blackfin ISA. So decode every ASTAT field to make the output
a bit nicer when working with hand generated opcodes.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-09-21 Mike Frysinger <vapier@gentoo.org>
* bfin-dis.c (decode_CC2stat_0): Decode all ASTAT bits.
---
opcodes/bfin-dis.c | 29 +++++++++++++++++++++--------
1 files changed, 21 insertions(+), 8 deletions(-)
diff --git a/opcodes/bfin-dis.c b/opcodes/bfin-dis.c
index ef7c7b5..f124f14 100644
--- a/opcodes/bfin-dis.c
+++ b/opcodes/bfin-dis.c
@@ -1227,44 +1227,57 @@ decode_CC2stat_0 (TIword iw0, disassemble_info *outf)
int op = ((iw0 >> CC2stat_op_bits) & CC2stat_op_mask);
int cbit = ((iw0 >> CC2stat_cbit_bits) & CC2stat_cbit_mask);
+ const char *bitname = statbits (cbit);
+ if (decode_statbits[cbit] == REG_LASTREG)
+ {
+ /* All ASTAT bits except CC may be operated on in hardware, but may
+ not have a dedicated insn, so still decode "valid" insns. */
+ static char bitnames[64];
+ if (cbit != 5)
+ sprintf (bitnames, "ASTAT[%i /* unused bit */]", cbit);
+ else
+ strcpy (bitnames, "CC /* ... Illegal register ... */");
+ bitname = bitnames;
+ }
+
if (op == 0 && D == 0)
{
OUTS (outf, "CC = ");
- OUTS (outf, statbits (cbit));
+ OUTS (outf, bitname);
}
else if (op == 1 && D == 0)
{
OUTS (outf, "CC |= ");
- OUTS (outf, statbits (cbit));
+ OUTS (outf, bitname);
}
else if (op == 2 && D == 0)
{
OUTS (outf, "CC &= ");
- OUTS (outf, statbits (cbit));
+ OUTS (outf, bitname);
}
else if (op == 3 && D == 0)
{
OUTS (outf, "CC ^= ");
- OUTS (outf, statbits (cbit));
+ OUTS (outf, bitname);
}
else if (op == 0 && D == 1)
{
- OUTS (outf, statbits (cbit));
+ OUTS (outf, bitname);
OUTS (outf, " = CC");
}
else if (op == 1 && D == 1)
{
- OUTS (outf, statbits (cbit));
+ OUTS (outf, bitname);
OUTS (outf, " |= CC");
}
else if (op == 2 && D == 1)
{
- OUTS (outf, statbits (cbit));
+ OUTS (outf, bitname);
OUTS (outf, " &= CC");
}
else if (op == 3 && D == 1)
{
- OUTS (outf, statbits (cbit));
+ OUTS (outf, bitname);
OUTS (outf, " ^= CC");
}
else
--
1.7.2