On 05.06.23 22:10, Denis Orlov wrote: > This allows to write generic assembly code that will compile under both > o32 and n64 ABIs, as otherwise the register definitions would conflict. > > Taken from Linux kernel sources, commit 'MIPS: O32: Provide definition > of registers ta0 .. ta3.' (3ba1e543ab4b02640d396098f2f6a199560d5f2d). > > Signed-off-by: Denis Orlov <denorl2009@xxxxxxxxx> Reviewed-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> I must say, this file looks odd though. _MIPS_SIM is apparently defined by the compiler and it's compared against _MIPS_SIM_ABI32, which barebox defines... > --- > arch/mips/include/asm/regdef.h | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/mips/include/asm/regdef.h b/arch/mips/include/asm/regdef.h > index 1300251661..df87582e8e 100644 > --- a/arch/mips/include/asm/regdef.h > +++ b/arch/mips/include/asm/regdef.h > @@ -3,6 +3,8 @@ > * Copyright (C) 1985 MIPS Computer Systems, Inc. > * Copyright (C) 1994, 95, 99, 2003 by Ralf Baechle > * Copyright (C) 1990 - 1992, 1999 Silicon Graphics, Inc. > + * Copyright (C) 2011 Wind River Systems, > + * written by Ralf Baechle <ralf@xxxxxxxxxxxxxx> > */ > #ifndef _ASM_REGDEF_H > #define _ASM_REGDEF_H > @@ -27,9 +29,13 @@ > #define t2 $10 > #define t3 $11 > #define t4 $12 > +#define ta0 $12 > #define t5 $13 > +#define ta1 $13 > #define t6 $14 > +#define ta2 $14 > #define t7 $15 > +#define ta3 $15 > #define s0 $16 /* callee saved */ > #define s1 $17 > #define s2 $18 -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
