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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-15 09:19:40 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-15 09:19:40 -0700 |
commit | 024b246ed24492d6c2ee14c34d742b137fce1b94 (patch) | |
tree | 428444950025503218c96b03c86f749403626dec /arch/alpha/include/asm/thread_info.h | |
parent | 9419fc1c957d600093baaea247fef23cca3b4e93 (diff) | |
download | lwn-024b246ed24492d6c2ee14c34d742b137fce1b94.tar.gz lwn-024b246ed24492d6c2ee14c34d742b137fce1b94.zip |
alpha: move include/asm-alpha to arch/alpha/include/asm
Sam Ravnborg did the build-test that the direct header file move works,
I'm just committing it.
This is a pure move:
mkdir arch/alpha/include
git mv include/asm-alpha arch/alpha/include/asm
with no other changes.
Requested-and-tested-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha/include/asm/thread_info.h')
-rw-r--r-- | arch/alpha/include/asm/thread_info.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/thread_info.h b/arch/alpha/include/asm/thread_info.h new file mode 100644 index 000000000000..15fda4344424 --- /dev/null +++ b/arch/alpha/include/asm/thread_info.h @@ -0,0 +1,114 @@ +#ifndef _ALPHA_THREAD_INFO_H +#define _ALPHA_THREAD_INFO_H + +#ifdef __KERNEL__ + +#ifndef __ASSEMBLY__ +#include <asm/processor.h> +#include <asm/types.h> +#include <asm/hwrpb.h> +#endif + +#ifndef __ASSEMBLY__ +struct thread_info { + struct pcb_struct pcb; /* palcode state */ + + struct task_struct *task; /* main task structure */ + unsigned int flags; /* low level flags */ + unsigned int ieee_state; /* see fpu.h */ + + struct exec_domain *exec_domain; /* execution domain */ + mm_segment_t addr_limit; /* thread address space */ + unsigned cpu; /* current CPU */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ + + int bpt_nsaved; + unsigned long bpt_addr[2]; /* breakpoint handling */ + unsigned int bpt_insn[2]; + + struct restart_block restart_block; +}; + +/* + * Macros/functions for gaining access to the thread information structure. + */ +#define INIT_THREAD_INFO(tsk) \ +{ \ + .task = &tsk, \ + .exec_domain = &default_exec_domain, \ + .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 thread information struct from C. */ +register struct thread_info *__current_thread_info __asm__("$8"); +#define current_thread_info() __current_thread_info + +/* Thread information allocation. */ +#define THREAD_SIZE_ORDER 1 +#define THREAD_SIZE (2*PAGE_SIZE) + +#endif /* __ASSEMBLY__ */ + +#define PREEMPT_ACTIVE 0x40000000 + +/* + * Thread information flags: + * - these are process state flags and used from assembly + * - pending work-to-be-done flags come first to fit in and immediate operand. + * + * TIF_SYSCALL_TRACE is known to be 0 via blbs. + */ +#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ +#define TIF_SIGPENDING 1 /* signal pending */ +#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ +#define TIF_POLLING_NRFLAG 3 /* poll_idle is polling NEED_RESCHED */ +#define TIF_DIE_IF_KERNEL 4 /* dik recursion lock */ +#define TIF_UAC_NOPRINT 5 /* see sysinfo.h */ +#define TIF_UAC_NOFIX 6 +#define TIF_UAC_SIGBUS 7 +#define TIF_MEMDIE 8 +#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal */ + +#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) +#define _TIF_SIGPENDING (1<<TIF_SIGPENDING) +#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) +#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) +#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) + +/* Work to do on interrupt/exception return. */ +#define _TIF_WORK_MASK (_TIF_SIGPENDING | _TIF_NEED_RESCHED) + +/* Work to do on any return to userspace. */ +#define _TIF_ALLWORK_MASK (_TIF_WORK_MASK \ + | _TIF_SYSCALL_TRACE) + +#define ALPHA_UAC_SHIFT 6 +#define ALPHA_UAC_MASK (1 << TIF_UAC_NOPRINT | 1 << TIF_UAC_NOFIX | \ + 1 << TIF_UAC_SIGBUS) + +#define SET_UNALIGN_CTL(task,value) ({ \ + task_thread_info(task)->flags = ((task_thread_info(task)->flags & \ + ~ALPHA_UAC_MASK) \ + | (((value) << ALPHA_UAC_SHIFT) & (1<<TIF_UAC_NOPRINT))\ + | (((value) << (ALPHA_UAC_SHIFT + 1)) & (1<<TIF_UAC_SIGBUS)) \ + | (((value) << (ALPHA_UAC_SHIFT - 1)) & (1<<TIF_UAC_NOFIX)));\ + 0; }) + +#define GET_UNALIGN_CTL(task,value) ({ \ + put_user((task_thread_info(task)->flags & (1 << TIF_UAC_NOPRINT))\ + >> ALPHA_UAC_SHIFT \ + | (task_thread_info(task)->flags & (1 << TIF_UAC_SIGBUS))\ + >> (ALPHA_UAC_SHIFT + 1) \ + | (task_thread_info(task)->flags & (1 << TIF_UAC_NOFIX))\ + >> (ALPHA_UAC_SHIFT - 1), \ + (int __user *)(value)); \ + }) + +#endif /* __KERNEL__ */ +#endif /* _ALPHA_THREAD_INFO_H */ |