Subversion Repositories HelenOS-historic

Rev

Rev 898 | Rev 907 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 898 Rev 906
Line 69... Line 69...
69 
    else
 69 
    else
70 
        fpu_disable();
 70 
        fpu_disable();
71 
    #else
 71 
#else
72 
    fpu_enable();
 72 
    fpu_enable();
73 
    if (THREAD->fpu_context_exists)
 73 
    if (THREAD->fpu_context_exists)
74 
        fpu_context_restore(&(THREAD->saved_fpu_context));
 74 
        fpu_context_restore(THREAD->saved_fpu_context);
75 
    else {
 75 
    else {
76 
        fpu_init(&(THREAD->saved_fpu_context));
 76 
        fpu_init();
77 
        THREAD->fpu_context_exists=1;
 77 
        THREAD->fpu_context_exists=1;
78 
    }
 78 
    }
79 
    #endif
 79 
#endif
80 
}
 80 
}
81 
 
 81 
 
Line 100... Line 100...
100 
    spinlock_lock(&CPU->lock);
 100 
    spinlock_lock(&CPU->lock);
101 
 
 101 
 
102 
    /* Save old context */
 102 
    /* Save old context */
103 
    if (CPU->fpu_owner != NULL) {  
 103 
    if (CPU->fpu_owner != NULL) {  
104 
        spinlock_lock(&CPU->fpu_owner->lock);
 104 
        spinlock_lock(&CPU->fpu_owner->lock);
105 
        fpu_context_save(&CPU->fpu_owner->saved_fpu_context);
 105 
        fpu_context_save(CPU->fpu_owner->saved_fpu_context);
106 
        /* don't prevent migration */
 106 
        /* don't prevent migration */
107 
        CPU->fpu_owner->fpu_context_engaged=0;
 107 
        CPU->fpu_owner->fpu_context_engaged=0;
108 
        spinlock_unlock(&CPU->fpu_owner->lock);
 108 
        spinlock_unlock(&CPU->fpu_owner->lock);
109 
    }
 109 
    }
110 
 
 110 
 
111 
    spinlock_lock(&THREAD->lock);
 111 
    spinlock_lock(&THREAD->lock);
112 
    if (THREAD->fpu_context_exists) {
 112 
    if (THREAD->fpu_context_exists) {
113 
        fpu_context_restore(&THREAD->saved_fpu_context);
 113 
        fpu_context_restore(THREAD->saved_fpu_context);
114 
    } else {
 114 
    } else {
- 
 
 115 
        /* Allocate FPU context */
115 
        fpu_init(&(THREAD->saved_fpu_context));
 116 
        if (!THREAD->saved_fpu_context) {
- 
 
 117 
            /* Might sleep */
- 
 
 118 
            spinlock_unlock(&THREAD->lock);
- 
 
 119 
            THREAD->saved_fpu_context = slab_alloc(fpu_context_slab,
- 
 
 120 
                                   0);
- 
 
 121 
            spinlock_lock(&THREAD->lock);
- 
 
 122 
        }
- 
 
 123 
        fpu_init();
116 
        THREAD->fpu_context_exists=1;
 124 
        THREAD->fpu_context_exists=1;
117 
    }
 125 
    }
118 
    CPU->fpu_owner=THREAD;
 126 
    CPU->fpu_owner=THREAD;
119 
    THREAD->fpu_context_engaged = 1;
 127 
    THREAD->fpu_context_engaged = 1;
120 
    spinlock_unlock(&THREAD->lock);
 128 
    spinlock_unlock(&THREAD->lock);
Line 273... Line 281...
273 
        halt();
 281 
        halt();
274 
 
 282 
 
275 
    if (THREAD) {
 283 
    if (THREAD) {
276 
        spinlock_lock(&THREAD->lock);
 284 
        spinlock_lock(&THREAD->lock);
277 
        #ifndef CONFIG_FPU_LAZY
 285 
#ifndef CONFIG_FPU_LAZY
278 
        fpu_context_save(&(THREAD->saved_fpu_context));
 286 
        fpu_context_save(THREAD->saved_fpu_context);
279 
        #endif
 287 
#endif
280 
        if (!context_save(&THREAD->saved_context)) {
 288 
        if (!context_save(&THREAD->saved_context)) {
281 
            /*
 289 
            /*
282 
             * This is the place where threads leave scheduler();
 290 
             * This is the place where threads leave scheduler();
283 
             */
 291 
             */