-/* thread_info.h: sparc64 low-level thread information
- *
- * Copyright (C) 2002 David S. Miller (davem@redhat.com)
- */
-
-#ifndef _ASM_THREAD_INFO_H
-#define _ASM_THREAD_INFO_H
-
-#ifdef __KERNEL__
-
-#define NSWINS 7
-
-#define TI_FLAG_BYTE_FAULT_CODE 0
-#define TI_FLAG_FAULT_CODE_SHIFT 56
-#define TI_FLAG_BYTE_WSTATE 1
-#define TI_FLAG_WSTATE_SHIFT 48
-#define TI_FLAG_BYTE_CWP 2
-#define TI_FLAG_CWP_SHIFT 40
-#define TI_FLAG_BYTE_CURRENT_DS 3
-#define TI_FLAG_CURRENT_DS_SHIFT 32
-#define TI_FLAG_BYTE_FPDEPTH 4
-#define TI_FLAG_FPDEPTH_SHIFT 24
-#define TI_FLAG_BYTE_WSAVED 5
-#define TI_FLAG_WSAVED_SHIFT 16
-
-#include <asm/page.h>
-
-#ifndef __ASSEMBLY__
-
-#include <asm/ptrace.h>
-#include <asm/types.h>
-
-struct task_struct;
-struct exec_domain;
-
-struct thread_info {
- /* D$ line 1 */
- struct task_struct *task;
- unsigned long flags;
- __u8 fpsaved[7];
- __u8 status;
- unsigned long ksp;
-
- /* D$ line 2 */
- unsigned long fault_address;
- struct pt_regs *kregs;
- struct exec_domain *exec_domain;
- int preempt_count; /* 0 => preemptable, <0 => BUG */
- __u8 new_child;
- __u8 syscall_noerror;
- __u16 cpu;
-
- unsigned long *utraps;
-
- struct reg_window reg_window[NSWINS];
- unsigned long rwbuf_stkptrs[NSWINS];
-
- unsigned long gsr[7];
- unsigned long xfsr[7];
-
- __u64 __user *user_cntd0;
- __u64 __user *user_cntd1;
- __u64 kernel_cntd0, kernel_cntd1;
- __u64 pcr_reg;
-
- struct restart_block restart_block;
-
- struct pt_regs *kern_una_regs;
- unsigned int kern_una_insn;
-
- unsigned long fpregs[0] __attribute__ ((aligned(64)));
-};
-
-#endif /* !(__ASSEMBLY__) */
-
-/* offsets into the thread_info struct for assembly code access */
-#define TI_TASK 0x00000000
-#define TI_FLAGS 0x00000008
-#define TI_FAULT_CODE (TI_FLAGS + TI_FLAG_BYTE_FAULT_CODE)
-#define TI_WSTATE (TI_FLAGS + TI_FLAG_BYTE_WSTATE)
-#define TI_CWP (TI_FLAGS + TI_FLAG_BYTE_CWP)
-#define TI_CURRENT_DS (TI_FLAGS + TI_FLAG_BYTE_CURRENT_DS)
-#define TI_FPDEPTH (TI_FLAGS + TI_FLAG_BYTE_FPDEPTH)
-#define TI_WSAVED (TI_FLAGS + TI_FLAG_BYTE_WSAVED)
-#define TI_FPSAVED 0x00000010
-#define TI_KSP 0x00000018
-#define TI_FAULT_ADDR 0x00000020
-#define TI_KREGS 0x00000028
-#define TI_EXEC_DOMAIN 0x00000030
-#define TI_PRE_COUNT 0x00000038
-#define TI_NEW_CHILD 0x0000003c
-#define TI_SYS_NOERROR 0x0000003d
-#define TI_CPU 0x0000003e
-#define TI_UTRAPS 0x00000040
-#define TI_REG_WINDOW 0x00000048
-#define TI_RWIN_SPTRS 0x000003c8
-#define TI_GSR 0x00000400
-#define TI_XFSR 0x00000438
-#define TI_USER_CNTD0 0x00000470
-#define TI_USER_CNTD1 0x00000478
-#define TI_KERN_CNTD0 0x00000480
-#define TI_KERN_CNTD1 0x00000488
-#define TI_PCR 0x00000490
-#define TI_RESTART_BLOCK 0x00000498
-#define TI_KUNA_REGS 0x000004c0
-#define TI_KUNA_INSN 0x000004c8
-#define TI_FPREGS 0x00000500
-
-/* We embed this in the uppermost byte of thread_info->flags */
-#define FAULT_CODE_WRITE 0x01 /* Write access, implies D-TLB */
-#define FAULT_CODE_DTLB 0x02 /* Miss happened in D-TLB */
-#define FAULT_CODE_ITLB 0x04 /* Miss happened in I-TLB */
-#define FAULT_CODE_WINFIXUP 0x08 /* Miss happened during spill/fill */
-#define FAULT_CODE_BLKCOMMIT 0x10 /* Use blk-commit ASI in copy_page */
-
-#if PAGE_SHIFT == 13
-#define THREAD_SIZE (2*PAGE_SIZE)
-#define THREAD_SHIFT (PAGE_SHIFT + 1)
-#else /* PAGE_SHIFT == 13 */
-#define THREAD_SIZE PAGE_SIZE
-#define THREAD_SHIFT PAGE_SHIFT
-#endif /* PAGE_SHIFT == 13 */
-
-#define PREEMPT_ACTIVE 0x4000000
-
-/*
- * 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, \
- .flags = ((unsigned long)ASI_P) << TI_FLAG_CURRENT_DS_SHIFT, \
- .exec_domain = &default_exec_domain, \
- .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 1
-#else /* PAGE_SHIFT == 13 */
-#define __THREAD_INFO_ORDER 0
-#endif /* PAGE_SHIFT == 13 */
-
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk) \
-({ \
- struct thread_info *ret; \
- \
- ret = (struct thread_info *) \
- __get_free_pages(GFP_KERNEL, __THREAD_INFO_ORDER); \
- if (ret) \
- memset(ret, 0, PAGE_SIZE<<__THREAD_INFO_ORDER); \
- ret; \
-})
-#else
-#define alloc_thread_info(tsk) \
- ((struct thread_info *)__get_free_pages(GFP_KERNEL, __THREAD_INFO_ORDER))
-#endif
-
-#define free_thread_info(ti) \
- free_pages((unsigned long)(ti),__THREAD_INFO_ORDER)
-
-#define __thread_flag_byte_ptr(ti) \
- ((unsigned char *)(&((ti)->flags)))
-#define __cur_thread_flag_byte_ptr __thread_flag_byte_ptr(current_thread_info())
-
-#define get_thread_fault_code() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FAULT_CODE])
-#define set_thread_fault_code(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FAULT_CODE] = (val))
-#define get_thread_wstate() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE])
-#define set_thread_wstate(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE] = (val))
-#define get_thread_cwp() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP])
-#define set_thread_cwp(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP] = (val))
-#define get_thread_current_ds() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS])
-#define set_thread_current_ds(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS] = (val))
-#define get_thread_fpdepth() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH])
-#define set_thread_fpdepth(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH] = (val))
-#define get_thread_wsaved() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED])
-#define set_thread_wsaved(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED] = (val))
-
-#endif /* !(__ASSEMBLY__) */
-
-/*
- * Thread information flags, only 16 bits are available as we encode
- * other values into the upper 6 bytes.
- *
- * On trap return we need to test several values:
- *
- * user: need_resched, notify_resume, sigpending, wsaved, perfctr
- * kernel: fpdepth
- *
- * So to check for work in the kernel case we simply load the fpdepth
- * byte out of the flags and test it. For the user case we encode the
- * lower 3 bytes of flags as follows:
- * ----------------------------------------
- * | wsaved | flags byte 1 | flags byte 2 |
- * ----------------------------------------
- * This optimizes the user test into:
- * ldx [%g6 + TI_FLAGS], REG1
- * sethi %hi(_TIF_USER_WORK_MASK), REG2
- * or REG2, %lo(_TIF_USER_WORK_MASK), REG2
- * andcc REG1, REG2, %g0
- * be,pt no_work_to_do
- * nop
- */
-#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
-/* flags bit 1 is available */
-#define TIF_SIGPENDING 2 /* signal pending */
-#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
-#define TIF_PERFCTR 4 /* performance counters active */
-#define TIF_UNALIGNED 5 /* allowed to do unaligned accesses */
-/* flag bit 6 is available */
-#define TIF_32BIT 7 /* 32-bit binary */
-/* flag bit 8 is available */
-#define TIF_SECCOMP 9 /* secure computing */
-#define TIF_SYSCALL_AUDIT 10 /* syscall auditing active */
-/* flag bit 11 is available */
-/* NOTE: Thread flags >= 12 should be ones we have no interest
- * in using in assembly, else we can't use the mask as
- * an immediate value in instructions such as andcc.
- */
-#define TIF_ABI_PENDING 12
-#define TIF_MEMDIE 13
-#define TIF_POLLING_NRFLAG 14
-
-#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
-#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
-#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
-#define _TIF_PERFCTR (1<<TIF_PERFCTR)
-#define _TIF_UNALIGNED (1<<TIF_UNALIGNED)
-#define _TIF_32BIT (1<<TIF_32BIT)
-#define _TIF_SECCOMP (1<<TIF_SECCOMP)
-#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
-#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
-#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
-
-#define _TIF_USER_WORK_MASK ((0xff << TI_FLAG_WSAVED_SHIFT) | \
- (_TIF_SIGPENDING | \
- _TIF_NEED_RESCHED | _TIF_PERFCTR))
-
-/*
- * 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.
- *
- * Note that there are only 8 bits available.
- */
-#define TS_RESTORE_SIGMASK 0x0001 /* restore signal mask in do_signal() */
-
-#ifndef __ASSEMBLY__
-#define HAVE_SET_RESTORE_SIGMASK 1
-static inline void set_restore_sigmask(void)
-{
- struct thread_info *ti = current_thread_info();
- ti->status |= TS_RESTORE_SIGMASK;
- set_bit(TIF_SIGPENDING, &ti->flags);
-}
-#endif /* !__ASSEMBLY__ */
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_THREAD_INFO_H */
+#include <asm-sparc/thread_info.h>
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