Release 4.14 arch/cris/include/asm/processor.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * include/asm-cris/processor.h
 *
 * Copyright (C) 2000, 2001 Axis Communications AB
 *
 * Authors:         Bjorn Wesen        Initial version
 *
 */

#ifndef __ASM_CRIS_PROCESSOR_H

#define __ASM_CRIS_PROCESSOR_H

#include <asm/page.h>
#include <asm/ptrace.h>
#include <arch/processor.h>
#include <arch/system.h>

struct task_struct;


#define STACK_TOP	TASK_SIZE

#define STACK_TOP_MAX	STACK_TOP

/* This decides where the kernel will search for a free chunk of vm
 * space during mmap's.
 */

#define TASK_UNMAPPED_BASE      (PAGE_ALIGN(TASK_SIZE / 3))

/* THREAD_SIZE is the size of the thread_info/kernel_stack combo.
 * normally, the stack is found by doing something like p + THREAD_SIZE
 * in CRIS, a page is 8192 bytes, which seems like a sane size
 */

#define THREAD_SIZE       PAGE_SIZE

#define THREAD_SIZE_ORDER (0)

/*
 * At user->kernel entry, the pt_regs struct is stacked on the top of the kernel-stack.
 * This macro allows us to find those regs for a task.
 * Notice that subsequent pt_regs stackings, like recursive interrupts occurring while
 * we're in the kernel, won't affect this - only the first user->kernel transition
 * registers are reached by this.
 */


#define user_regs(thread_info) (((struct pt_regs *)((unsigned long)(thread_info) + THREAD_SIZE)) - 1)

/*
 * Dito but for the currently running task
 */


#define task_pt_regs(task) user_regs(task_thread_info(task))

unsigned long get_wchan(struct task_struct *p);


#define KSTK_ESP(tsk)   ((tsk) == current ? rdusp() : (tsk)->thread.usp)

/* Free all resources held by a thread. */


static inline void release_thread(struct task_struct *dead_task)
{
        /* Nothing needs to be done.  */
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
7
53.85%
1
33.33%
Mikael Starvik
5
38.46%
1
33.33%
Adrian Bunk
1
7.69%
1
33.33%
Total
13
100.00%
3
100.00%


#define init_stack      (init_thread_union.stack)


#define cpu_relax()     barrier()

void default_idle(void);

#endif /* __ASM_CRIS_PROCESSOR_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
63
57.27%
5
33.33%
David Howells
18
16.36%
2
13.33%
Mikael Starvik
12
10.91%
1
6.67%
Al Viro
7
6.36%
1
6.67%
Tim Schmielau
3
2.73%
1
6.67%
Thomas Gleixner
3
2.73%
1
6.67%
Adrian Bunk
1
0.91%
1
6.67%
Anton Blanchard
1
0.91%
1
6.67%
Greg Kroah-Hartman
1
0.91%
1
6.67%
Michael Hayes
1
0.91%
1
6.67%
Total
110
100.00%
15
100.00%
Directory: arch/cris/include/asm

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