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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-cris/processor.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-cris/processor.h')
-rw-r--r-- | include/asm-cris/processor.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/include/asm-cris/processor.h b/include/asm-cris/processor.h new file mode 100644 index 000000000000..623bdf06d911 --- /dev/null +++ b/include/asm-cris/processor.h @@ -0,0 +1,79 @@ +/* + * 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 <linux/config.h> +#include <asm/system.h> +#include <asm/page.h> +#include <asm/ptrace.h> +#include <asm/arch/processor.h> + +/* 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 task_struct/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 KERNEL_STACK_SIZE PAGE_SIZE + +/* + * 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 current_regs() user_regs(current->thread_info) + +extern inline void prepare_to_copy(struct task_struct *tsk) +{ +} + +extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); + +unsigned long get_wchan(struct task_struct *p); + +#define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) + +/* + * Free current thread data structures etc.. + */ + +extern inline void exit_thread(void) +{ + /* Nothing needs to be done. */ +} + +extern unsigned long thread_saved_pc(struct task_struct *tsk); + +/* Free all resources held by a thread. */ +extern inline void release_thread(struct task_struct *dead_task) +{ + /* Nothing needs to be done. */ +} + +#define init_stack (init_thread_union.stack) + +#define cpu_relax() barrier() + +#endif /* __ASM_CRIS_PROCESSOR_H */ |