Michael Tretter <m.tretter@xxxxxxxxxxxxxx> writes: > Without this flag, gcc generates code to save the Q/V registers to the > stack for handling the va_list in pr_print(). Saving the registers is > use useless, as the registers are never restored, but this hangs the ^ nit: this use looks lost. > CPU. > > Follow the Linux arch/arm64/Makefile and the general-regs-only flag, to > prevent usage of floating point and Advanced SIMD register. > > Signed-off-by: Michael Tretter <m.tretter@xxxxxxxxxxxxxx> > --- > arch/arm/Makefile | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/arch/arm/Makefile b/arch/arm/Makefile > index 5db67b9db8..50958b787f 100644 > --- a/arch/arm/Makefile > +++ b/arch/arm/Makefile > @@ -27,6 +27,10 @@ else > CFLAGS += -mstrict-align > endif > > +# Prevent use of floating point and Advanced SIMD registers. > +ifeq ($(CONFIG_CPU_V8),y) > +CFLAGS += -mgeneral-regs-only > +endif > > # This selects which instruction set is used. > # Note that GCC does not numerically define an architecture version - Rouven _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
