From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: Denis Orlov <denorl2009@gmail.com>, barebox@lists.infradead.org
Subject: Re: [PATCH 04/17] MIPS: o32: provide ta0..ta3 register definitions
Date: Tue, 6 Jun 2023 10:13:35 +0200 [thread overview]
Message-ID: <2b45c583-276c-b4f1-ac11-07062033c7ce@pengutronix.de> (raw)
In-Reply-To: <20230605202634.42175-5-denorl2009@gmail.com>
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@gmail.com>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
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@linux-mips.org>
> */
> #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
--
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next prev parent reply other threads:[~2023-06-06 8:14 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-05 20:10 [PATCH 00/17] MIPS: fix and improve 64BIT support Denis Orlov
2023-06-05 20:10 ` [PATCH 01/17] MIPS: malta: allow to choose MIPS64 target CPU in config Denis Orlov
2023-06-06 8:06 ` Ahmad Fatoum
2023-06-05 20:10 ` [PATCH 02/17] MIPS: malta: use CKSEG instead of KSEG macros Denis Orlov
2023-06-06 8:03 ` Ahmad Fatoum
2023-06-06 9:14 ` Denis Orlov
2023-06-05 20:10 ` [PATCH 03/17] MIPS: reloc: fix relocation with CONFIG_64BIT enabled Denis Orlov
2023-06-06 8:08 ` Ahmad Fatoum
2023-06-05 20:10 ` [PATCH 04/17] MIPS: o32: provide ta0..ta3 register definitions Denis Orlov
2023-06-06 8:13 ` Ahmad Fatoum [this message]
2023-06-06 9:38 ` Denis Orlov
2023-06-05 20:10 ` [PATCH 05/17] MIPS: pbl: use o32/n64 compatible " Denis Orlov
2023-06-06 8:20 ` Ahmad Fatoum
2023-06-05 20:10 ` [PATCH 06/17] MIPS: pbl: fix linking errors with CONFIG_64BIT Denis Orlov
2023-06-05 20:10 ` [PATCH 07/17] MIPS: use MIPS32/MIPS64 generic instruction macros Denis Orlov
2023-06-06 8:23 ` Ahmad Fatoum
2023-06-05 20:10 ` [PATCH 08/17] MIPS: malta: fix GT64120 base virtual address on 64BIT Denis Orlov
2023-06-06 8:35 ` Ahmad Fatoum
2023-06-05 20:10 ` [PATCH 09/17] MIPS: fix addresses of exception vectors in 64-bit mode Denis Orlov
2023-06-06 8:36 ` Ahmad Fatoum
2023-06-05 20:10 ` [PATCH 10/17] MIPS: fix *ADDR macro usage warnings on CONFIG_64BIT Denis Orlov
2023-06-05 20:10 ` [PATCH 11/17] MIPS: Makefile: sign-extend TEXT_BASE value " Denis Orlov
2023-06-06 9:04 ` Ahmad Fatoum
2023-06-06 9:23 ` Denis Orlov
2023-06-09 6:40 ` Ahmad Fatoum
2023-06-05 20:10 ` [PATCH 12/17] MIPS: enable 64-bit kernel segment addressing " Denis Orlov
2023-06-06 9:06 ` Ahmad Fatoum
2023-06-05 20:10 ` [PATCH 13/17] MIPS: traps: fix passing wrong sp when returning from exception Denis Orlov
2023-06-05 20:10 ` [PATCH 14/17] MIPS: pbl_macros: use generic load/store macros in copy_to_link_location Denis Orlov
2023-06-06 9:07 ` Ahmad Fatoum
2023-06-05 20:10 ` [PATCH 15/17] MIPS: add 64-bit support for optimized string functions Denis Orlov
2023-06-05 20:10 ` [PATCH 16/17] MIPS: make setjmp/longjmp/initjmp available in 64BIT builds Denis Orlov
2023-06-05 20:10 ` [PATCH 17/17] MIPS: main_entry-pbl: fix conversion warnings on CONFIG_64BIT Denis Orlov
2023-06-06 8:02 ` [PATCH 00/17] MIPS: fix and improve 64BIT support Ahmad Fatoum
2023-06-06 8:43 ` Denis Orlov
2023-06-09 6:43 ` Sascha Hauer
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