sh: migrate to arch/sh/include/
This follows the sparc changes a439fe51a1.
Most of the moving about was done with Sam's directions at:
http://marc.info/?l=linux-sh&m=121724823706062&w=2
with subsequent hacking and fixups entirely my fault.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
141
arch/sh/include/asm/thread_info.h
Normal file
141
arch/sh/include/asm/thread_info.h
Normal file
@@ -0,0 +1,141 @@
|
||||
#ifndef __ASM_SH_THREAD_INFO_H
|
||||
#define __ASM_SH_THREAD_INFO_H
|
||||
|
||||
/* SuperH version
|
||||
* Copyright (C) 2002 Niibe Yutaka
|
||||
*
|
||||
* The copyright of original i386 version is:
|
||||
*
|
||||
* Copyright (C) 2002 David Howells (dhowells@redhat.com)
|
||||
* - Incorporating suggestions made by Linus Torvalds and Dave Miller
|
||||
*/
|
||||
#ifdef __KERNEL__
|
||||
#include <asm/page.h>
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
#include <asm/processor.h>
|
||||
|
||||
struct thread_info {
|
||||
struct task_struct *task; /* main task structure */
|
||||
struct exec_domain *exec_domain; /* execution domain */
|
||||
unsigned long flags; /* low level flags */
|
||||
__u32 cpu;
|
||||
int preempt_count; /* 0 => preemptable, <0 => BUG */
|
||||
mm_segment_t addr_limit; /* thread address space */
|
||||
struct restart_block restart_block;
|
||||
unsigned long previous_sp; /* sp of previous stack in case
|
||||
of nested IRQ stacks */
|
||||
__u8 supervisor_stack[0];
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
#define PREEMPT_ACTIVE 0x10000000
|
||||
|
||||
#if defined(CONFIG_4KSTACKS)
|
||||
#define THREAD_SIZE_ORDER (0)
|
||||
#elif defined(CONFIG_PAGE_SIZE_4KB)
|
||||
#define THREAD_SIZE_ORDER (1)
|
||||
#elif defined(CONFIG_PAGE_SIZE_8KB)
|
||||
#define THREAD_SIZE_ORDER (1)
|
||||
#elif defined(CONFIG_PAGE_SIZE_16KB)
|
||||
#define THREAD_SIZE_ORDER (0)
|
||||
#elif defined(CONFIG_PAGE_SIZE_64KB)
|
||||
#define THREAD_SIZE_ORDER (0)
|
||||
#else
|
||||
#error "Unknown thread size"
|
||||
#endif
|
||||
|
||||
#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
|
||||
#define STACK_WARN (THREAD_SIZE >> 3)
|
||||
|
||||
/*
|
||||
* macros/functions for gaining access to the thread information structure
|
||||
*/
|
||||
#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)
|
||||
|
||||
/* how to get the current stack pointer from C */
|
||||
register unsigned long current_stack_pointer asm("r15") __used;
|
||||
|
||||
/* how to get the thread information struct from C */
|
||||
static inline struct thread_info *current_thread_info(void)
|
||||
{
|
||||
struct thread_info *ti;
|
||||
#if defined(CONFIG_SUPERH64)
|
||||
__asm__ __volatile__ ("getcon cr17, %0" : "=r" (ti));
|
||||
#elif defined(CONFIG_CPU_HAS_SR_RB)
|
||||
__asm__ __volatile__ ("stc r7_bank, %0" : "=r" (ti));
|
||||
#else
|
||||
unsigned long __dummy;
|
||||
|
||||
__asm__ __volatile__ (
|
||||
"mov r15, %0\n\t"
|
||||
"and %1, %0\n\t"
|
||||
: "=&r" (ti), "=r" (__dummy)
|
||||
: "1" (~(THREAD_SIZE - 1))
|
||||
: "memory");
|
||||
#endif
|
||||
|
||||
return ti;
|
||||
}
|
||||
|
||||
#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
|
||||
|
||||
/* thread information allocation */
|
||||
#ifdef CONFIG_DEBUG_STACK_USAGE
|
||||
#define alloc_thread_info(ti) kzalloc(THREAD_SIZE, GFP_KERNEL)
|
||||
#else
|
||||
#define alloc_thread_info(ti) kmalloc(THREAD_SIZE, GFP_KERNEL)
|
||||
#endif
|
||||
#define free_thread_info(ti) kfree(ti)
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
||||
/*
|
||||
* 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_RESTORE_SIGMASK 3 /* restore signal mask in do_signal() */
|
||||
#define TIF_SINGLESTEP 4 /* singlestepping active */
|
||||
#define TIF_SYSCALL_AUDIT 5
|
||||
#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
|
||||
#define TIF_FREEZE 19
|
||||
|
||||
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
|
||||
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
|
||||
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
|
||||
#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
|
||||
#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
|
||||
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
|
||||
#define _TIF_USEDFPU (1<<TIF_USEDFPU)
|
||||
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
|
||||
#define _TIF_FREEZE (1<<TIF_FREEZE)
|
||||
|
||||
#define _TIF_WORK_MASK 0x000000FE /* work to do on interrupt/exception return */
|
||||
#define _TIF_ALLWORK_MASK 0x000000FF /* work to do on any return to u-space */
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* __ASM_SH_THREAD_INFO_H */
|
||||
Reference in New Issue
Block a user