Messages in this thread | | | Date | Tue, 27 Aug 2019 06:25:12 +0800 | From | Changbin Du <> | Subject | Re: [PATCH 03/11] asm-generic: add generic dwarf definition |
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Hi, Peter,
On Mon, Aug 26, 2019 at 09:42:15AM +0200, Peter Zijlstra wrote: > On Sun, Aug 25, 2019 at 09:23:22PM +0800, Changbin Du wrote: > > Add generic DWARF constant definitions. We will use it later. > > > > Signed-off-by: Changbin Du <changbin.du@gmail.com> > > --- > > include/asm-generic/dwarf.h | 199 ++++++++++++++++++++++++++++++++++++ > > 1 file changed, 199 insertions(+) > > create mode 100644 include/asm-generic/dwarf.h > > > > diff --git a/include/asm-generic/dwarf.h b/include/asm-generic/dwarf.h > > new file mode 100644 > > index 000000000000..c705633c2a8f > > --- /dev/null > > +++ b/include/asm-generic/dwarf.h > > @@ -0,0 +1,199 @@ > > +/* SPDX-License-Identifier: GPL-2.0 > > + * > > + * Architecture independent definitions of DWARF. > > + * > > + * Copyright (C) 2019 Changbin Du <changbin.du@gmail.com> > > You're claiming copyright on dwarf definitions? ;-) > > I'm thinking only Oracle was daft enough to think stuff like that was > copyrightable. > ok, let me remove copyright line. I think SPDX claim is okay, right?
> Also; I think it would be very good to not use/depend on DWARF for this. > It only includes the DWARF expersion opcodes, not all of dwarf stuffs.
> You really don't need all of DWARF; I'm thikning you only need a few > types; for location we already have regs_get_kernel_argument() which > has all the logic to find the n-th argument. > regs_get_kernel_argument() can handle most cases, but if the size of one paramater exceeds 64bit (it is rare in kernel), we must recalculate the locations. So I think dwarf location descriptor is the most accurate one.
-- Cheers, Changbin Du
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