[Bug binutils/10924] Bug in objdump when disassembling raw armv4t binaries

[chris at seberino dot org]

------- Additional Comments From chris at seberino dot org  2009-11-30 04:55 
-------
Subject: Re:  Bug in objdump when disassembling raw
        armv4t binaries

On Tue, Nov 10, 2009 at 10:32:26AM -0000, nickc at redhat dot com wrote:
>   I am planning on applying the uploaded patch to address this issue, but I
> would like your feedback on the new behaviour.  With the patch applied your
> testcase will disassemble as:
>
>   00000000 <.text>:
>      0:   002000b0        strheq  r0, [r0], -r0 <UNPREDICTABLE>

You ended up adding a comment for the above unpredictable instruction flagging
it as unpredictable.

There are thousands of other loads and stores you still need to flag as
unpredictable.    What they all have in common is they have W=1 and P=0.
(bits #21 and #24) for addressing mode 3.

Please flag all loads and stores with the following format as unpredictable...

0xX02XXXXX
0xX03XXXXX
0xX06XXXXX
0xX07XXXXX
0xX0aXXXXX
0xX0bXXXXX
0xX0eXXXXX
..etc.

(Notice they all have bit 24 unset and bit 21 set.)

cs


-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=10924

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