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Lines Matching defs:dtv

65  * DTV offset
68  *	the DTV offsets passed to __tls_get_addr have a bias relative
69  *	to the start of the DTV, in order to maximize the range of TLS
80 size_t _rtld_tls_max_index = 1;		/* Max index into up-to-date DTV */
83  * DTV -- Dynamic Thread Vector
85  *	The DTV is a per-thread array that maps each module with
90  *	The TCB itself, struct tls_tcb, has a pointer to the DTV at
96  *		| max index     | -1    max index i for which dtv[i] is alloced
98  *		| generation    |  0    void **dtv points here
109  *	dtv[obj->tlsindex] works, when dtv[0] is the generation.  The
119  *	module lies outside the bounds of the current DTV.
127  *		struct dtv {
132 #define	DTV_GENERATION(dtv)		((size_t)((dtv)[0]))
133 #define	DTV_MAX_INDEX(dtv)		((size_t)((dtv)[-1]))
134 #define	SET_DTV_GENERATION(dtv, val)	(dtv)[0] = (void *)(size_t)(val)
135 #define	SET_DTV_MAX_INDEX(dtv, val)	(dtv)[-1] = (void *)(size_t)(val)
144  *	This may allocate a DTV if the current one is too old, and it
155 	void **dtv, **new_dtv;
160 	dtv = tcb->tcb_dtv;
164 	 * new DTV.
167 	 * DTV_MAX_INDEX(dtv)?
169 	if (__predict_false(DTV_GENERATION(dtv) != _rtld_tls_dtv_generation)) {
170 		size_t to_copy = DTV_MAX_INDEX(dtv);
176 		new_dtv = xcalloc((2 + _rtld_tls_max_index) * sizeof(*dtv));
180 		memcpy(new_dtv + 1, dtv + 1, to_copy * sizeof(*dtv));
181 		xfree(dtv - 1);		/* retreat back to DTV_MAX_INDEX */
182 		dtv = tcb->tcb_dtv = new_dtv;
183 		SET_DTV_MAX_INDEX(dtv, _rtld_tls_max_index);
184 		SET_DTV_GENERATION(dtv, _rtld_tls_dtv_generation);
187 	if (__predict_false(dtv[idx] == NULL))
188 		dtv[idx] = _rtld_tls_module_allocate(tcb, idx);
192 	return (uint8_t *)dtv[idx] + offset;
235  *	This allocates a DTV and a TCB that points to it, including
276 			dbg(("%s: [lwp %d] tls dtv %p-%p index %zu "
319  *	DTV points to, and frees tcb's DTV, and frees tcb.
520 	void **dtv;
528 	dtv = tcb->tcb_dtv;
531 	 * Fast path: access to an already allocated DTV entry.  This
537 	if (__predict_true(idx <= DTV_MAX_INDEX(dtv) && dtv[idx] != NULL))
538 		return (uint8_t *)dtv[idx] + offset;