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https://github.com/torvalds/linux
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5f56a5dfdb
Define HAVE_EXIT_THREAD for archs which want to do something in exit_thread. For others, let's define exit_thread as an empty inline. This is a cleanup before we change the prototype of exit_thread to accept a task parameter. [akpm@linux-foundation.org: fix mips] Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: "David S. Miller" <davem@davemloft.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chen Liqin <liqin.linux@gmail.com> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Howells <dhowells@redhat.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Hogan <james.hogan@imgtec.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Jonas Bonn <jonas@southpole.se> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Mikael Starvik <starvik@axis.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Richard Weinberger <richard@nod.at> Cc: Russell King <linux@arm.linux.org.uk> Cc: Steven Miao <realmz6@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/* processor.h: FRV processor definitions
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*
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* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_PROCESSOR_H
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#define _ASM_PROCESSOR_H
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#include <asm/mem-layout.h>
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#ifndef __ASSEMBLY__
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/*
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* Default implementation of macro that returns current
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* instruction pointer ("program counter").
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*/
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#define current_text_addr() ({ __label__ _l; _l: &&_l;})
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#include <linux/compiler.h>
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#include <linux/linkage.h>
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#include <asm/sections.h>
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#include <asm/segment.h>
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#include <asm/fpu.h>
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#include <asm/registers.h>
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#include <asm/ptrace.h>
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#include <asm/current.h>
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#include <asm/cache.h>
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/* Forward declaration, a strange C thing */
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struct task_struct;
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/*
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* Bus types
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*/
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#define EISA_bus 0
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struct thread_struct {
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struct pt_regs *frame; /* [GR28] exception frame ptr for this thread */
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struct task_struct *curr; /* [GR29] current pointer for this thread */
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unsigned long sp; /* [GR1 ] kernel stack pointer */
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unsigned long fp; /* [GR2 ] kernel frame pointer */
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unsigned long lr; /* link register */
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unsigned long pc; /* program counter */
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unsigned long gr[12]; /* [GR16-GR27] */
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unsigned long sched_lr; /* LR from schedule() */
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union {
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struct pt_regs *frame0; /* top (user) stack frame */
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struct user_context *user; /* userspace context */
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};
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} __attribute__((aligned(8)));
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extern struct pt_regs *__kernel_frame0_ptr;
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extern struct task_struct *__kernel_current_task;
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#endif
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#ifndef __ASSEMBLY__
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#define INIT_THREAD_FRAME0 \
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((struct pt_regs *) \
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(sizeof(init_stack) + (unsigned long) init_stack - sizeof(struct user_context)))
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#define INIT_THREAD { \
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NULL, \
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(struct task_struct *) init_stack, \
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0, 0, 0, 0, \
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{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
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0, \
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{ INIT_THREAD_FRAME0 }, \
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}
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/*
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* do necessary setup to start up a newly executed thread.
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*/
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#define start_thread(_regs, _pc, _usp) \
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do { \
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_regs->pc = (_pc); \
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_regs->psr &= ~PSR_S; \
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_regs->sp = (_usp); \
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} while(0)
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/* Free all resources held by a thread. */
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static inline void release_thread(struct task_struct *dead_task)
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{
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}
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extern asmlinkage void save_user_regs(struct user_context *target);
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extern asmlinkage void *restore_user_regs(const struct user_context *target, ...);
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#define copy_segments(tsk, mm) do { } while (0)
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#define release_segments(mm) do { } while (0)
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#define forget_segments() do { } while (0)
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/*
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* Return saved PC of a blocked thread.
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*/
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extern unsigned long thread_saved_pc(struct task_struct *tsk);
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unsigned long get_wchan(struct task_struct *p);
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#define KSTK_EIP(tsk) ((tsk)->thread.frame0->pc)
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#define KSTK_ESP(tsk) ((tsk)->thread.frame0->sp)
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#define cpu_relax() barrier()
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#define cpu_relax_lowlatency() cpu_relax()
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/* data cache prefetch */
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#define ARCH_HAS_PREFETCH
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static inline void prefetch(const void *x)
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{
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asm volatile("dcpl %0,gr0,#0" : : "r"(x));
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}
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_PROCESSOR_H */
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