mips/mips/trap.c

127 	MipsKernGenException,	/* virtual coherence exception inst */
935 	InstFmt inst;
940 #define	GetBranchDest(InstPtr, inst) \
941 	(InstPtr + 4 + ((short)inst.IType.imm << 2))
946 			inst.word = fuword32((void *)instptr);
948 			inst = *(InstFmt *) instptr;
951 			inst.word = fuword32((void *)instPC);
953 			inst = *(InstFmt *) instPC;
956 	switch ((int)inst.JType.op) {
958 		switch ((int)inst.RType.func) {
961 			retAddr = regsPtr[inst.RType.rs];
971 		switch ((int)inst.IType.rt) {
976 			if ((int)(regsPtr[inst.RType.rs]) < 0)
977 				retAddr = GetBranchDest(instPC, inst);
986 			if ((int)(regsPtr[inst.RType.rs]) >= 0)
987 				retAddr = GetBranchDest(instPC, inst);
1008 		retAddr = (inst.JType.target << 2) |
1014 		if (regsPtr[inst.RType.rs] == regsPtr[inst.RType.rt])
1015 			retAddr = GetBranchDest(instPC, inst);
1022 		if (regsPtr[inst.RType.rs] != regsPtr[inst.RType.rt])
1023 			retAddr = GetBranchDest(instPC, inst);
1030 		if ((int)(regsPtr[inst.RType.rs]) <= 0)
1031 			retAddr = GetBranchDest(instPC, inst);
1038 		if ((int)(regsPtr[inst.RType.rs]) > 0)
1039 			retAddr = GetBranchDest(instPC, inst);
1045 		switch (inst.RType.rs) {
1048 			if ((inst.RType.rt & COPz_BC_TF_MASK) == COPz_BC_TRUE)
1053 				retAddr = GetBranchDest(instPC, inst);
1303 	u_int32_t inst = *((u_int32_t *)(intptr_t)pc);
1314 	switch (MIPS_INST_OPCODE(inst)) {
1328 		printf("%s: unhandled opcode in address error: %#x\n", __func__, MIPS_INST_OPCODE(inst));
1339 	switch (MIPS_INST_OPCODE(inst)) {
1346 		reg[MIPS_INST_RT(inst)] = value;
1355 		reg[MIPS_INST_RT(inst)] = value;
1364 		reg[MIPS_INST_RT(inst)] = value;
1372 		reg[MIPS_INST_RT(inst)] = value;
1381 		reg[MIPS_INST_RT(inst)] = value;
1387 		value = reg[MIPS_INST_RT(inst)];
1396 		value = reg[MIPS_INST_RT(inst)];
1405 		value = reg[MIPS_INST_RT(inst)];