[Bug gas/3000] New: Disassembler: wrong operands are emitted with cvt* instructions

[dwarak dot rajagopal at amd dot com]

Testcase:
test.s:
            .text
Foo:
            cvtpd2pi %xmm0,%mm0
            cvttpd2pi %xmm0,%mm0
            cvtpi2pd %mm0,%xmm0

Assemble it: as test.s

Disassemble : objdump -dw a.out
0000000000000000 <foo>:
   0:   66 0f 2d c0             cvtpd2pi %xmm0,%xmm0
   4:   66 0f 2c c0             cvttpd2pi %xmm0,%xmm0
   8:   66 0f 2a c0             cvtpi2pd %xmm0,%xmm0

As seen abovce the disassembler emits %xmm instead of %mm as register operands.
This is because cvt* are the only instructions which have both mmx and xmm
register operands and have "66" in their opcodes.

In general "66" was used in differentiating between having xmm(SSE) and mm (MMX)
 operands/instructions.(eg:padd*,pand etc.,). Hence the above cvt* are special
cases and need to handled separately.

-- 
           Summary: Disassembler: wrong operands are emitted with cvt*
                    instructions
           Product: binutils
           Version: 2.18 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gas
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: dwarak dot rajagopal at amd dot com
                CC: bug-binutils at gnu dot org,dwarak dot rajagopal at amd
                    dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=3000

------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.