dev/i386/fasttrap_isa.c

268 	uint8_t instr[FASTTRAP_MAX_INSTR_SIZE + 10];
288 	if (uread(p, &instr[0], first, pc) != 0)
291 	    uread(p, &instr[first], len - first, pc + first) != 0) {
292 		bzero(&instr[first], len - first);
299 	if ((size = dtrace_instr_size_isa(instr, p_model, &rmindex)) <= 0)
325 		switch (instr[start]) {
370 	if (p_model == DATAMODEL_LP64 && (instr[start] & 0xf0) == 0x40)
371 		rex = instr[start++];
378 	bcopy(instr, tp->ftt_instr, FASTTRAP_MAX_INSTR_SIZE);
381 	if (instr[start] == FASTTRAP_2_BYTE_OP) {
382 		switch (instr[start + 1]) {
400 			tp->ftt_code = (instr[start + 1] & 0x0f) | FASTTRAP_JO;
403 			    *(int32_t *)&instr[start + 2];
406 	} else if (instr[start] == FASTTRAP_GROUP5_OP) {
407 		uint_t mod = FASTTRAP_MODRM_MOD(instr[start + 1]);
408 		uint_t reg = FASTTRAP_MODRM_REG(instr[start + 1]);
409 		uint_t rm = FASTTRAP_MODRM_RM(instr[start + 1]);
432 				uint8_t sib = instr[start + 2];
474 				tp->ftt_dest = *(int8_t *)&instr[start + i];
477 				tp->ftt_dest = *(int32_t *)&instr[start + i];
483 		switch (instr[start]) {
491 			tp->ftt_dest = *(uint16_t *)&instr[start + 1];
511 			tp->ftt_code = instr[start];
513 			    (int8_t)instr[start + 1];
520 			tp->ftt_code = instr[start];
522 			    (int8_t)instr[start + 1];
528 			    (int8_t)instr[start + 1];
535 			    *(int32_t *)&instr[start + 1];
543 			    *(int32_t *)&instr[start + 1];
548 			    (int8_t)instr[start + 1];
576 			ASSERT(instr[start] == FASTTRAP_INSTR);
606 			uint_t mod = FASTTRAP_MODRM_MOD(instr[rmindex]);
607 			uint_t reg = FASTTRAP_MODRM_REG(instr[rmindex]);
608 			uint_t rm = FASTTRAP_MODRM_RM(instr[rmindex]);
648 	fasttrap_instr_t instr = FASTTRAP_INSTR;
650 	if (uwrite(p, &instr, 1, tp->ftt_pc) != 0)
659 	uint8_t instr;
665 	if (uread(p, &instr, 1, tp->ftt_pc) != 0)
667 	if (instr != FASTTRAP_INSTR)