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Diffstat (limited to 'include/asm-i386/thread_info.h')
| -rw-r--r-- | include/asm-i386/thread_info.h | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h deleted file mode 100644 index 2493e77e8c3..00000000000 --- a/include/asm-i386/thread_info.h +++ /dev/null @@ -1,175 +0,0 @@ -/* thread_info.h: i386 low-level thread information - * - * Copyright (C) 2002 David Howells (dhowells@redhat.com) - * - Incorporating suggestions made by Linus Torvalds and Dave Miller - */ - -#ifndef _ASM_THREAD_INFO_H -#define _ASM_THREAD_INFO_H - -#ifdef __KERNEL__ - -#include <linux/config.h> -#include <linux/compiler.h> -#include <asm/page.h> - -#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-thead - 0-0xFFFFFFFF for kernel-thread - */ - struct restart_block restart_block; - - unsigned long previous_esp; /* ESP of the previous stack in case - of nested (IRQ) stacks - */ - __u8 supervisor_stack[0]; -}; - -#else /* !__ASSEMBLY__ */ - -#include <asm/asm-offsets.h> - -#endif - -#define PREEMPT_ACTIVE 0x10000000 -#ifdef CONFIG_4KSTACKS -#define THREAD_SIZE (4096) -#else -#define THREAD_SIZE (8192) -#endif - -#define STACK_WARN (THREAD_SIZE/8) -/* - * 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) - - -/* how to get the thread information struct from C */ -static inline struct thread_info *current_thread_info(void) -{ - struct thread_info *ti; - __asm__("andl %%esp,%0; ":"=r" (ti) : "0" (~(THREAD_SIZE - 1))); - return ti; -} - -/* how to get the current stack pointer from C */ -register unsigned long current_stack_pointer asm("esp") __attribute_used__; - -/* thread information allocation */ -#ifdef CONFIG_DEBUG_STACK_USAGE -#define alloc_thread_info(tsk) \ - ({ \ - struct thread_info *ret; \ - \ - ret = kmalloc(THREAD_SIZE, GFP_KERNEL); \ - if (ret) \ - memset(ret, 0, THREAD_SIZE); \ - ret; \ - }) -#else -#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL) -#endif - -#define free_thread_info(info) kfree(info) - -#else /* !__ASSEMBLY__ */ - -/* how to get the thread information struct from ASM */ -#define GET_THREAD_INFO(reg) \ - movl $-THREAD_SIZE, reg; \ - andl %esp, reg - -/* use this one if reg already contains %esp */ -#define GET_THREAD_INFO_WITH_ESP(reg) \ - andl $-THREAD_SIZE, reg - -#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_NOTIFY_RESUME 1 /* resumption notification requested */ -#define TIF_SIGPENDING 2 /* signal pending */ -#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ -#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */ -#define TIF_IRET 5 /* return with iret */ -#define TIF_SYSCALL_EMU 6 /* syscall emulation active */ -#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ -#define TIF_SECCOMP 8 /* secure computing */ -#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ -#define TIF_MEMDIE 17 - -#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) -#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) -#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_SYSCALL_EMU (1<<TIF_SYSCALL_EMU) -#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) -#define _TIF_SECCOMP (1<<TIF_SECCOMP) -#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) - -/* work to do on interrupt/exception return */ -#define _TIF_WORK_MASK \ - (0x0000FFFF & ~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP|\ - _TIF_SECCOMP|_TIF_SYSCALL_EMU)) -/* work to do on any return to u-space */ -#define _TIF_ALLWORK_MASK (0x0000FFFF & ~_TIF_SECCOMP) - -/* - * 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_THREAD_INFO_H */ |