162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef _ASM_M68K_THREAD_INFO_H 362306a36Sopenharmony_ci#define _ASM_M68K_THREAD_INFO_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <asm/types.h> 662306a36Sopenharmony_ci#include <asm/page.h> 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci/* 962306a36Sopenharmony_ci * On machines with 4k pages we default to an 8k thread size, though we 1062306a36Sopenharmony_ci * allow a 4k with config option. Any other machine page size then 1162306a36Sopenharmony_ci * the thread size must match the page size (which is 8k and larger here). 1262306a36Sopenharmony_ci */ 1362306a36Sopenharmony_ci#if PAGE_SHIFT < 13 1462306a36Sopenharmony_ci#ifdef CONFIG_4KSTACKS 1562306a36Sopenharmony_ci#define THREAD_SIZE 4096 1662306a36Sopenharmony_ci#else 1762306a36Sopenharmony_ci#define THREAD_SIZE 8192 1862306a36Sopenharmony_ci#endif 1962306a36Sopenharmony_ci#else 2062306a36Sopenharmony_ci#define THREAD_SIZE PAGE_SIZE 2162306a36Sopenharmony_ci#endif 2262306a36Sopenharmony_ci#define THREAD_SIZE_ORDER ((THREAD_SIZE / PAGE_SIZE) - 1) 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ci#ifndef __ASSEMBLY__ 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_cistruct thread_info { 2762306a36Sopenharmony_ci struct task_struct *task; /* main task structure */ 2862306a36Sopenharmony_ci unsigned long flags; 2962306a36Sopenharmony_ci int preempt_count; /* 0 => preemptable, <0 => BUG */ 3062306a36Sopenharmony_ci __u32 cpu; /* should always be 0 on m68k */ 3162306a36Sopenharmony_ci unsigned long tp_value; /* thread pointer */ 3262306a36Sopenharmony_ci}; 3362306a36Sopenharmony_ci#endif /* __ASSEMBLY__ */ 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci#define INIT_THREAD_INFO(tsk) \ 3662306a36Sopenharmony_ci{ \ 3762306a36Sopenharmony_ci .task = &tsk, \ 3862306a36Sopenharmony_ci .preempt_count = INIT_PREEMPT_COUNT, \ 3962306a36Sopenharmony_ci} 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ci#ifndef __ASSEMBLY__ 4262306a36Sopenharmony_ci/* how to get the thread information struct from C */ 4362306a36Sopenharmony_cistatic inline struct thread_info *current_thread_info(void) 4462306a36Sopenharmony_ci{ 4562306a36Sopenharmony_ci struct thread_info *ti; 4662306a36Sopenharmony_ci __asm__( 4762306a36Sopenharmony_ci "move.l %%sp, %0 \n\t" 4862306a36Sopenharmony_ci "and.l %1, %0" 4962306a36Sopenharmony_ci : "=&d"(ti) 5062306a36Sopenharmony_ci : "di" (~(THREAD_SIZE-1)) 5162306a36Sopenharmony_ci ); 5262306a36Sopenharmony_ci return ti; 5362306a36Sopenharmony_ci} 5462306a36Sopenharmony_ci#endif 5562306a36Sopenharmony_ci 5662306a36Sopenharmony_ci/* entry.S relies on these definitions! 5762306a36Sopenharmony_ci * bits 0-7 are tested at every exception exit 5862306a36Sopenharmony_ci * bits 8-15 are also tested at syscall exit 5962306a36Sopenharmony_ci */ 6062306a36Sopenharmony_ci#define TIF_NOTIFY_SIGNAL 4 6162306a36Sopenharmony_ci#define TIF_NOTIFY_RESUME 5 /* callback before returning to user */ 6262306a36Sopenharmony_ci#define TIF_SIGPENDING 6 /* signal pending */ 6362306a36Sopenharmony_ci#define TIF_NEED_RESCHED 7 /* rescheduling necessary */ 6462306a36Sopenharmony_ci#define TIF_SECCOMP 13 /* seccomp syscall filtering active */ 6562306a36Sopenharmony_ci#define TIF_DELAYED_TRACE 14 /* single step a syscall */ 6662306a36Sopenharmony_ci#define TIF_SYSCALL_TRACE 15 /* syscall trace active */ 6762306a36Sopenharmony_ci#define TIF_MEMDIE 16 /* is terminating due to OOM killer */ 6862306a36Sopenharmony_ci#define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal */ 6962306a36Sopenharmony_ci 7062306a36Sopenharmony_ci#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 7162306a36Sopenharmony_ci#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 7262306a36Sopenharmony_ci#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 7362306a36Sopenharmony_ci#define _TIF_SECCOMP (1 << TIF_SECCOMP) 7462306a36Sopenharmony_ci#define _TIF_DELAYED_TRACE (1 << TIF_DELAYED_TRACE) 7562306a36Sopenharmony_ci#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 7662306a36Sopenharmony_ci#define _TIF_MEMDIE (1 << TIF_MEMDIE) 7762306a36Sopenharmony_ci#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) 7862306a36Sopenharmony_ci 7962306a36Sopenharmony_ci#endif /* _ASM_M68K_THREAD_INFO_H */ 80