diff options
Diffstat (limited to 'include/asm-sparc/thread_info.h')
| -rw-r--r-- | include/asm-sparc/thread_info.h | 157 |
1 files changed, 7 insertions, 150 deletions
diff --git a/include/asm-sparc/thread_info.h b/include/asm-sparc/thread_info.h index 91b9f5888c8..64155cf89f3 100644 --- a/include/asm-sparc/thread_info.h +++ b/include/asm-sparc/thread_info.h @@ -1,151 +1,8 @@ -/* - * thread_info.h: sparc low-level thread information - * adapted from the ppc version by Pete Zaitcev, which was - * adapted from the i386 version by Paul Mackerras - * - * Copyright (C) 2002 David Howells (dhowells@redhat.com) - * Copyright (c) 2002 Pete Zaitcev (zaitcev@yahoo.com) - * - Incorporating suggestions made by Linus Torvalds and Dave Miller - */ - -#ifndef _ASM_THREAD_INFO_H -#define _ASM_THREAD_INFO_H - -#ifdef __KERNEL__ - -#ifndef __ASSEMBLY__ - -#include <asm/btfixup.h> -#include <asm/ptrace.h> -#include <asm/page.h> - -/* - * Low level task data. - * - * If you change this, change the TI_* offsets below to match. - */ -#define NSWINS 8 -struct thread_info { - unsigned long uwinmask; - struct task_struct *task; /* main task structure */ - struct exec_domain *exec_domain; /* execution domain */ - unsigned long flags; /* low level flags */ - int cpu; /* cpu we're on */ - int preempt_count; /* 0 => preemptable, - <0 => BUG */ - int softirq_count; - int hardirq_count; - - /* Context switch saved kernel state. */ - unsigned long ksp; /* ... ksp __attribute__ ((aligned (8))); */ - unsigned long kpc; - unsigned long kpsr; - unsigned long kwim; - - /* A place to store user windows and stack pointers - * when the stack needs inspection. - */ - struct reg_window reg_window[NSWINS]; /* align for ldd! */ - unsigned long rwbuf_stkptrs[NSWINS]; - unsigned long w_saved; - - struct restart_block restart_block; -}; - -/* - * macros/functions for gaining access to the thread information structure - * - * preempt_count needs to be 1 initially, until the scheduler is functional. - */ -#define INIT_THREAD_INFO(tsk) \ -{ \ - .uwinmask = 0, \ - .task = &tsk, \ - .exec_domain = &default_exec_domain, \ - .flags = 0, \ - .cpu = 0, \ - .preempt_count = 1, \ - .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_reg asm("g6"); -#define current_thread_info() (current_thread_info_reg) - -/* - * thread information allocation - */ -#if PAGE_SHIFT == 13 -#define THREAD_INFO_ORDER 0 -#else /* PAGE_SHIFT */ -#define THREAD_INFO_ORDER 1 +#ifndef ___ASM_SPARC_THREAD_INFO_H +#define ___ASM_SPARC_THREAD_INFO_H +#if defined(__sparc__) && defined(__arch64__) +#include <asm-sparc/thread_info_64.h> +#else +#include <asm-sparc/thread_info_32.h> +#endif #endif - -BTFIXUPDEF_CALL(struct thread_info *, alloc_thread_info, void) -#define alloc_thread_info(tsk) BTFIXUP_CALL(alloc_thread_info)() - -BTFIXUPDEF_CALL(void, free_thread_info, struct thread_info *) -#define free_thread_info(ti) BTFIXUP_CALL(free_thread_info)(ti) - -#endif /* __ASSEMBLY__ */ - -/* - * Size of kernel stack for each process. - * Observe the order of get_free_pages() in alloc_thread_info(). - * The sun4 has 8K stack too, because it's short on memory, and 16K is a waste. - */ -#define THREAD_SIZE 8192 - -/* - * Offsets in thread_info structure, used in assembly code - * The "#define REGWIN_SZ 0x40" was abolished, so no multiplications. - */ -#define TI_UWINMASK 0x00 /* uwinmask */ -#define TI_TASK 0x04 -#define TI_EXECDOMAIN 0x08 /* exec_domain */ -#define TI_FLAGS 0x0c -#define TI_CPU 0x10 -#define TI_PREEMPT 0x14 /* preempt_count */ -#define TI_SOFTIRQ 0x18 /* softirq_count */ -#define TI_HARDIRQ 0x1c /* hardirq_count */ -#define TI_KSP 0x20 /* ksp */ -#define TI_KPC 0x24 /* kpc (ldd'ed with kpc) */ -#define TI_KPSR 0x28 /* kpsr */ -#define TI_KWIM 0x2c /* kwim (ldd'ed with kpsr) */ -#define TI_REG_WINDOW 0x30 -#define TI_RWIN_SPTRS 0x230 -#define TI_W_SAVED 0x250 -/* #define TI_RESTART_BLOCK 0x25n */ /* Nobody cares */ - -#define PREEMPT_ACTIVE 0x4000000 - -/* - * thread information flag bit numbers - */ -#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ -/* flag bit 1 is available */ -#define TIF_SIGPENDING 2 /* signal pending */ -#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ -#define TIF_RESTORE_SIGMASK 4 /* restore signal mask in do_signal() */ -#define TIF_USEDFPU 8 /* FPU was used by this task - * this quantum (SMP) */ -#define TIF_POLLING_NRFLAG 9 /* true if poll_idle() is polling - * TIF_NEED_RESCHED */ -#define TIF_MEMDIE 10 - -/* as above, but as bit values */ -#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_USEDFPU (1<<TIF_USEDFPU) -#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) - -#endif /* __KERNEL__ */ - -#endif /* _ASM_THREAD_INFO_H */ |