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| author | Arnd Bergmann <arnd@arndb.de> | 2018-03-07 21:36:19 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2018-03-09 23:20:00 +0100 |
| commit | 553b085c2075f6a4a2591108554f830fa61e881f (patch) | |
| tree | 68d63911f2c12e0fb9fa23498df9300442a88f92 /arch/m32r/include/asm/switch_to.h | |
| parent | fd8773f9f544955f6f47dc2ac3ab85ad64376b7f (diff) | |
| download | linux-553b085c2075f6a4a2591108554f830fa61e881f.tar.gz linux-553b085c2075f6a4a2591108554f830fa61e881f.tar.bz2 linux-553b085c2075f6a4a2591108554f830fa61e881f.zip | |
arch: remove m32r port
The Mitsubishi/Renesas m32r architecture has been around for many years,
but the Linux port has been obsolete for a very long time as well, with
the last significant updates done for linux-2.6.14.
While some m32r microcontrollers are still being marketed by Renesas,
those are apparently no longer possible to support, mainly due to the
lack of an external memory interface.
Hirokazu Takata was the maintainer until the architecture got marked
Orphaned in 2014.
Link: http://www.linux-m32r.org/
Link: https://www.renesas.com/en-eu/products/microcontrollers-microprocessors/m32r.html
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/m32r/include/asm/switch_to.h')
| -rw-r--r-- | arch/m32r/include/asm/switch_to.h | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/arch/m32r/include/asm/switch_to.h b/arch/m32r/include/asm/switch_to.h deleted file mode 100644 index 4b262f7a8fe9..000000000000 --- a/arch/m32r/include/asm/switch_to.h +++ /dev/null @@ -1,51 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2001 Hiroyuki Kondo, Hirokazu Takata, and Hitoshi Yamamoto - * Copyright (C) 2004, 2006 Hirokazu Takata <takata at linux-m32r.org> - */ -#ifndef _ASM_M32R_SWITCH_TO_H -#define _ASM_M32R_SWITCH_TO_H - -/* - * switch_to(prev, next) should switch from task `prev' to `next' - * `prev' will never be the same as `next'. - * - * `next' and `prev' should be struct task_struct, but it isn't always defined - */ - -#if defined(CONFIG_FRAME_POINTER) || \ - !defined(CONFIG_SCHED_OMIT_FRAME_POINTER) -#define M32R_PUSH_FP " push fp\n" -#define M32R_POP_FP " pop fp\n" -#else -#define M32R_PUSH_FP "" -#define M32R_POP_FP "" -#endif - -#define switch_to(prev, next, last) do { \ - __asm__ __volatile__ ( \ - " seth lr, #high(1f) \n" \ - " or3 lr, lr, #low(1f) \n" \ - " st lr, @%4 ; store old LR \n" \ - " ld lr, @%5 ; load new LR \n" \ - M32R_PUSH_FP \ - " st sp, @%2 ; store old SP \n" \ - " ld sp, @%3 ; load new SP \n" \ - " push %1 ; store `prev' on new stack \n" \ - " jmp lr \n" \ - " .fillinsn \n" \ - "1: \n" \ - " pop %0 ; restore `__last' from new stack \n" \ - M32R_POP_FP \ - : "=r" (last) \ - : "0" (prev), \ - "r" (&(prev->thread.sp)), "r" (&(next->thread.sp)), \ - "r" (&(prev->thread.lr)), "r" (&(next->thread.lr)) \ - : "memory", "lr" \ - ); \ -} while(0) - -#endif /* _ASM_M32R_SWITCH_TO_H */ |