m32r: move include/asm-m32r headers to arch/m32r/include/asm
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
This commit is contained in:
Hirokazu Takata
184
arch/m32r/include/asm/thread_info.h
Normal file
184
arch/m32r/include/asm/thread_info.h
Normal file
@@ -0,0 +1,184 @@
|
||||
#ifndef _ASM_M32R_THREAD_INFO_H
|
||||
#define _ASM_M32R_THREAD_INFO_H
|
||||
|
||||
/* thread_info.h: m32r low-level thread information
|
||||
*
|
||||
* Copyright (C) 2002 David Howells (dhowells@redhat.com)
|
||||
* - Incorporating suggestions made by Linus Torvalds and Dave Miller
|
||||
* Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org>
|
||||
*/
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
#include <asm/processor.h>
|
||||
#endif
|
||||
|
||||
/*
|
||||
* low level task data that entry.S needs immediate access to
|
||||
* - this struct should fit entirely inside of one cache line
|
||||
* - this struct shares the supervisor stack pages
|
||||
* - if the contents of this structure are changed, the assembly constants must also be changed
|
||||
*/
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
struct thread_info {
|
||||
struct task_struct *task; /* main task structure */
|
||||
struct exec_domain *exec_domain; /* execution domain */
|
||||
unsigned long flags; /* low level flags */
|
||||
unsigned long status; /* thread-synchronous flags */
|
||||
__u32 cpu; /* current CPU */
|
||||
int preempt_count; /* 0 => preemptable, <0 => BUG */
|
||||
|
||||
mm_segment_t addr_limit; /* thread address space:
|
||||
0-0xBFFFFFFF for user-thread
|
||||
0-0xFFFFFFFF for kernel-thread
|
||||
*/
|
||||
struct restart_block restart_block;
|
||||
|
||||
__u8 supervisor_stack[0];
|
||||
};
|
||||
|
||||
#else /* !__ASSEMBLY__ */
|
||||
|
||||
/* offsets into the thread_info struct for assembly code access */
|
||||
#define TI_TASK 0x00000000
|
||||
#define TI_EXEC_DOMAIN 0x00000004
|
||||
#define TI_FLAGS 0x00000008
|
||||
#define TI_STATUS 0x0000000C
|
||||
#define TI_CPU 0x00000010
|
||||
#define TI_PRE_COUNT 0x00000014
|
||||
#define TI_ADDR_LIMIT 0x00000018
|
||||
#define TI_RESTART_BLOCK 0x000001C
|
||||
|
||||
#endif
|
||||
|
||||
#define PREEMPT_ACTIVE 0x10000000
|
||||
|
||||
/*
|
||||
* macros/functions for gaining access to the thread information structure
|
||||
*
|
||||
* preempt_count needs to be 1 initially, until the scheduler is functional.
|
||||
*/
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#define INIT_THREAD_INFO(tsk) \
|
||||
{ \
|
||||
.task = &tsk, \
|
||||
.exec_domain = &default_exec_domain, \
|
||||
.flags = 0, \
|
||||
.cpu = 0, \
|
||||
.preempt_count = 1, \
|
||||
.addr_limit = KERNEL_DS, \
|
||||
.restart_block = { \
|
||||
.fn = do_no_restart_syscall, \
|
||||
}, \
|
||||
}
|
||||
|
||||
#define init_thread_info (init_thread_union.thread_info)
|
||||
#define init_stack (init_thread_union.stack)
|
||||
|
||||
#define THREAD_SIZE (2*PAGE_SIZE)
|
||||
|
||||
/* how to get the thread information struct from C */
|
||||
static inline struct thread_info *current_thread_info(void)
|
||||
{
|
||||
struct thread_info *ti;
|
||||
|
||||
__asm__ __volatile__ (
|
||||
"ldi %0, #%1 \n\t"
|
||||
"and %0, sp \n\t"
|
||||
: "=r" (ti) : "i" (~(THREAD_SIZE - 1))
|
||||
);
|
||||
|
||||
return ti;
|
||||
}
|
||||
|
||||
#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
|
||||
|
||||
/* thread information allocation */
|
||||
#ifdef CONFIG_DEBUG_STACK_USAGE
|
||||
#define alloc_thread_info(tsk) \
|
||||
({ \
|
||||
struct thread_info *ret; \
|
||||
\
|
||||
ret = kzalloc(THREAD_SIZE, GFP_KERNEL); \
|
||||
\
|
||||
ret; \
|
||||
})
|
||||
#else
|
||||
#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
|
||||
#endif
|
||||
|
||||
#define free_thread_info(info) kfree(info)
|
||||
|
||||
#define TI_FLAG_FAULT_CODE_SHIFT 28
|
||||
|
||||
static inline void set_thread_fault_code(unsigned int val)
|
||||
{
|
||||
struct thread_info *ti = current_thread_info();
|
||||
ti->flags = (ti->flags & (~0 >> (32 - TI_FLAG_FAULT_CODE_SHIFT)))
|
||||
| (val << TI_FLAG_FAULT_CODE_SHIFT);
|
||||
}
|
||||
|
||||
static inline unsigned int get_thread_fault_code(void)
|
||||
{
|
||||
struct thread_info *ti = current_thread_info();
|
||||
return ti->flags >> TI_FLAG_FAULT_CODE_SHIFT;
|
||||
}
|
||||
|
||||
#else /* !__ASSEMBLY__ */
|
||||
|
||||
#define THREAD_SIZE 8192
|
||||
|
||||
/* how to get the thread information struct from ASM */
|
||||
#define GET_THREAD_INFO(reg) GET_THREAD_INFO reg
|
||||
.macro GET_THREAD_INFO reg
|
||||
ldi \reg, #-THREAD_SIZE
|
||||
and \reg, sp
|
||||
.endm
|
||||
|
||||
#endif
|
||||
|
||||
/*
|
||||
* thread information flags
|
||||
* - these are process state flags that various assembly files may need to access
|
||||
* - pending work-to-be-done flags are in LSW
|
||||
* - other flags in MSW
|
||||
*/
|
||||
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
|
||||
#define TIF_SIGPENDING 1 /* signal pending */
|
||||
#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
|
||||
#define TIF_SINGLESTEP 3 /* restore singlestep on return to user mode */
|
||||
#define TIF_IRET 4 /* return with iret */
|
||||
#define TIF_RESTORE_SIGMASK 8 /* restore signal mask in do_signal() */
|
||||
#define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */
|
||||
#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */
|
||||
#define TIF_MEMDIE 18 /* OOM killer killed process */
|
||||
#define TIF_FREEZE 19 /* is freezing for suspend */
|
||||
|
||||
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
|
||||
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
|
||||
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
|
||||
#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
|
||||
#define _TIF_IRET (1<<TIF_IRET)
|
||||
#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
|
||||
#define _TIF_USEDFPU (1<<TIF_USEDFPU)
|
||||
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
|
||||
#define _TIF_FREEZE (1<<TIF_FREEZE)
|
||||
|
||||
#define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */
|
||||
#define _TIF_ALLWORK_MASK 0x0000FFFF /* work to do on any return to u-space */
|
||||
|
||||
/*
|
||||
* Thread-synchronous status.
|
||||
*
|
||||
* This is different from the flags in that nobody else
|
||||
* ever touches our thread-synchronous status, so we don't
|
||||
* have to worry about atomic accesses.
|
||||
*/
|
||||
#define TS_USEDFPU 0x0001 /* FPU was used by this task this quantum (SMP) */
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* _ASM_M32R_THREAD_INFO_H */
|
||||
Reference in New Issue
Block a user