67 static const uint8_t *pt_find_psb(const uint8_t *pos,  in pt_find_psb()  argument
73 	if (!pos || !config)  in pt_find_psb()
84 	if (*pos != pt_psb_hi)  in pt_find_psb()
85 		pos++;  in pt_find_psb()
87 	for (; (pos + 1) < end; pos += 2) {  in pt_find_psb()
90 		hi = pos[0];  in pt_find_psb()
91 		lo = pos[1];  in pt_find_psb()
103 	pos -= ptps_psb;  in pt_find_psb()
106 	if (pos < begin)  in pt_find_psb()
110 	if (pos[0] != pt_opc_psb || pos[1] != pt_ext_psb)  in pt_find_psb()
113 	errcode = pt_pkt_read_psb(pos, config);  in pt_find_psb()
117 	return pos;  in pt_find_psb()
120 static int pt_sync_within_bounds(const uint8_t *pos, const uint8_t *begin,  in pt_sync_within_bounds()  argument
123 	/* We allow @pos == @end representing the very end of the trace.  in pt_sync_within_bounds()
125 	 * This will result in -pte_eos when we actually try to read from @pos.  in pt_sync_within_bounds()
127 	return (begin <= pos) && (pos <= end);  in pt_sync_within_bounds()
130 int pt_sync_set(const uint8_t **sync, const uint8_t *pos,  in pt_sync_set()  argument
136 	if (!sync || !pos || !config)  in pt_sync_set()
142 	if (!pt_sync_within_bounds(pos, begin, end))  in pt_sync_set()
145 	if (end < pos + 2)  in pt_sync_set()
149 	if (pos[0] != pt_opc_psb || pos[1] != pt_ext_psb)  in pt_sync_set()
152 	errcode = pt_pkt_read_psb(pos, config);  in pt_sync_set()
156 	*sync = pos;  in pt_sync_set()
161 int pt_sync_forward(const uint8_t **sync, const uint8_t *pos,  in pt_sync_forward()  argument
166 	if (!sync || !pos || !config)  in pt_sync_forward()
169 	start = pos;  in pt_sync_forward()
173 	if (!pt_sync_within_bounds(pos, begin, end))  in pt_sync_forward()
177 	pos = align(pos, sizeof(*psb_pattern));  in pt_sync_forward()
181 		const uint8_t *current = pos;  in pt_sync_forward()
184 		pos += sizeof(uint64_t);  in pt_sync_forward()
185 		if (end < pos)  in pt_sync_forward()
194 		current = pt_find_psb(pos, config);  in pt_sync_forward()
209 int pt_sync_backward(const uint8_t **sync, const uint8_t *pos,  in pt_sync_backward()  argument
214 	if (!sync || !pos || !config)  in pt_sync_backward()
220 	if (!pt_sync_within_bounds(pos, begin, end))  in pt_sync_backward()
224 	pos = truncate(pos, sizeof(*psb_pattern));  in pt_sync_backward()
228 		const uint8_t *next = pos;  in pt_sync_backward()
231 		pos -= sizeof(uint64_t);  in pt_sync_backward()
232 		if (pos < begin)  in pt_sync_backward()
235 		val = * (const uint64_t *) pos;  in pt_sync_backward()