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Re: [patch] Enable power7 disassembling
- From: Peter Bergner <bergner at vnet dot ibm dot com>
- To: Jan Kratochvil <jan dot kratochvil at redhat dot com>
- Cc: binutils at sourceware dot org, Thiago Jung Bauermann <bauerman at br dot ibm dot com>, Alan Modra <amodra at bigpond dot net dot au>
- Date: Thu, 05 Mar 2009 21:41:08 -0600
- Subject: Re: [patch] Enable power7 disassembling
- References: <20090302210404.GB23798@host0.dyn.jankratochvil.net> <1236115864.6800.80.camel@otta> <20090305224339.GA2401@host0.dyn.jankratochvil.net>
On Thu, 2009-03-05 at 23:43 +0100, Jan Kratochvil wrote:
> On Tue, 03 Mar 2009 22:31:04 +0100, Peter Bergner wrote:
> > The disassembler happily chooses the first matching instruction
> > it comes across in the opcode table, which happens to be POWER2's
>
> Still getting (but only) these differences:
>
> $ ./gas/as-new -o power7.o -mpower7 ./gas/testsuite/gas/ppc/power7.s
> $ ./binutils/objdump -d -Many power7.o >d-any
> $ ./binutils/objdump -d -Mpower7 power7.o >d-power7
> $ diff -u d-any d-power7
> - 98: 7d 5c 02 a6 mfspr r10,28
> + 98: 7d 5c 02 a6 mfcfar r10
> - 9c: 7d 7c 03 a6 mtspr 28,r11
> + 9c: 7d 7c 03 a6 mtcfar r11
> - 14c: 7e 08 4a 2c dcbt 16,r8,r9
> + 14c: 7e 08 4a 2c dcbtt r8,r9
> - 150: 7e 08 49 ec dcbtst 16,r8,r9
> + 150: 7e 08 49 ec dcbtstt r8,r9
>
> Is -Mpower7 therefore still required or could be the current `d-any' variants
> also overriden for -Many by their `d-power7' variants?
Technically, there is nothing wrong here. The -Mpower7 mnemonics are new
extended opcodes for the -Many mnemonics, so both outputs are valid and
correct.
Peter