Re: [Qemu-devel] [PATCH qemu] spapr/rtas: Force big endian compile for rtas

[David Gibson <david@gibson.dropbear.id.au>]

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On Wed, Feb 13, 2019 at 05:00:50PM +1100, Alexey Kardashevskiy wrote:
> 
> 
> On 01/02/2019 11:40, Alexey Kardashevskiy wrote:
> > At the moment the rtas's Makefile uses generic QEMU rules which means
> > that when QEMU is compiled on a little endian system, the spapr-rtas.bin
> > is compiled as little endian too which is incorrect as it is always
> > executed in big endian mode.
> > 
> > This enforces -mbig by defining %.o:%.S rule as spapr-rtas.bin is
> > a standalone guest binary which should not depend on QEMU flags anyway.
> 
> Bag? Good? Useless? :)

I missed the original send of this, I'm afraid.  Looks like a good
idea.


> 
> 
> > 
> > Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
> > ---
> >  pc-bios/spapr-rtas/Makefile | 5 ++++-
> >  1 file changed, 4 insertions(+), 1 deletion(-)
> > 
> > diff --git a/pc-bios/spapr-rtas/Makefile b/pc-bios/spapr-rtas/Makefile
> > index f26dd42..4b9bb12 100644
> > --- a/pc-bios/spapr-rtas/Makefile
> > +++ b/pc-bios/spapr-rtas/Makefile
> > @@ -14,8 +14,11 @@ $(call set-vpath, $(SRC_PATH)/pc-bios/spapr-rtas)
> >  
> >  build-all: spapr-rtas.bin
> >  
> > +%.o: %.S
> > +	$(call quiet-command,$(CCAS) -mbig -c -o $@ $<,"CCAS","$(TARGET_DIR)$@")
> > +
> >  %.img: %.o
> > -	$(call quiet-command,$(CC) -nostdlib -o $@ $<,"Building","$(TARGET_DIR)$@")
> > +	$(call quiet-command,$(CC) -nostdlib -mbig -o $@ $<,"Building","$(TARGET_DIR)$@")
> >  
> >  %.bin: %.img
> >  	$(call quiet-command,$(OBJCOPY) -O binary -j .text $< $@,"Building","$(TARGET_DIR)$@")
> > 
> 

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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