diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-v850/processor.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2v2.6.12-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-v850/processor.h')
-rw-r--r-- | include/asm-v850/processor.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/include/asm-v850/processor.h b/include/asm-v850/processor.h new file mode 100644 index 000000000000..d41f925f5182 --- /dev/null +++ b/include/asm-v850/processor.h @@ -0,0 +1,120 @@ +/* + * include/asm-v850/processor.h + * + * Copyright (C) 2001,02,03 NEC Electronics Corporation + * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> + * + * 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. + * + * Written by Miles Bader <miles@gnu.org> + */ + +#ifndef __V850_PROCESSOR_H__ +#define __V850_PROCESSOR_H__ + +#include <linux/config.h> +#ifndef __ASSEMBLY__ /* <linux/thread_info.h> is not asm-safe. */ +#include <linux/thread_info.h> +#endif + +#include <asm/ptrace.h> +#include <asm/entry.h> + +/* Some code expects `segment' stuff to be defined here. */ +#include <asm/segment.h> + + +/* + * The only places this is used seem to be horrible bletcherous kludges, + * so we just define it to be as large as possible. + */ +#define TASK_SIZE (0xFFFFFFFF) + +/* + * This decides where the kernel will search for a free chunk of vm + * space during mmap's. We won't be using it. + */ +#define TASK_UNMAPPED_BASE 0 + + +#ifndef __ASSEMBLY__ + + +/* + * Default implementation of macro that returns current + * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ __label__ _l; _l: &&_l;}) + +/* If you change this, you must change the associated assembly-languages + constants defined below, THREAD_*. */ +struct thread_struct { + /* kernel stack pointer (must be first field in structure) */ + unsigned long ksp; +}; + +#define INIT_THREAD { sizeof init_stack + (unsigned long)init_stack } + + +/* Do necessary setup to start up a newly executed thread. */ +extern inline void start_thread (struct pt_regs *regs, + unsigned long pc, unsigned long usp) +{ + regs->pc = pc; + regs->gpr[GPR_SP] = usp; + regs->kernel_mode = 0; +} + +/* Free all resources held by a thread. */ +extern inline void release_thread (struct task_struct *dead_task) +{ +} + +/* Prepare to copy thread state - unlazy all lazy status */ +#define prepare_to_copy(tsk) do { } while (0) + +extern int kernel_thread (int (*fn)(void *), void * arg, unsigned long flags); + +/* Free current thread data structures etc. */ +static inline void exit_thread (void) +{ +} + + +/* Return the registers saved during context-switch by the currently + not-running thread T. Note that this only includes some registers! + See entry.S for details. */ +#define thread_saved_regs(t) \ + ((struct pt_regs*)((t)->thread.ksp + STATE_SAVE_PT_OFFSET)) +/* Return saved (kernel) PC of a blocked thread. Actually, we return the + LP register, because the thread is actually blocked in switch_thread, + and we're interested in the PC it will _return_ to. */ +#define thread_saved_pc(t) (thread_saved_regs(t)->gpr[GPR_LP]) + + +unsigned long get_wchan (struct task_struct *p); + + +/* Return some info about the user process TASK. */ +#define task_tos(task) ((unsigned long)(task)->thread_info + THREAD_SIZE) +#define task_regs(task) ((struct pt_regs *)task_tos (task) - 1) +#define task_sp(task) (task_regs (task)->gpr[GPR_SP]) +#define task_pc(task) (task_regs (task)->pc) +/* Grotty old names for some. */ +#define KSTK_EIP(task) task_pc (task) +#define KSTK_ESP(task) task_sp (task) + + +#define cpu_relax() ((void)0) + + +#else /* __ASSEMBLY__ */ + +#define THREAD_KSP 0 + +#endif /* !__ASSEMBLY__ */ + + +#endif /* __V850_PROCESSOR_H__ */ |