diff 178cd4d1139b8ba928ddac19578643637a953a93 uncommitted
--- a/sys/src/cmd/9a/lex.c
+++ b/sys/src/cmd/9a/lex.c
@@ -476,8 +476,11 @@
 	"FCTIDZCC",	LFCONV,	AFCTIDZCC,
 	"FCFID",	LFCONV,	AFCFID,
 	"FCFIDCC",	LFCONV,	AFCFIDCC,
-	"LDAR", LXLD, ALDAR,
-	"MOVD",	LMOVW,	AMOVD,
+	"LBAR",		LXLD,	ALBAR,
+	"LHAR",		LXLD,	ALHAR,
+	"LDAR",		LXLD,	ALDAR,
+	"LQAR",		LXLD,	ALQAR,
+	"MOVD",		LMOVW,	AMOVD,
 	"MOVDU",	LMOVW,	AMOVDU,
 	"MOVWZ",	LMOVW,	AMOVWZ,
 	"MOVWZU",	LMOVW,	AMOVWZU,
@@ -510,7 +513,10 @@
 	"SRAD",	LSHW,	ASRAD,
 	"SRADCC",	LSHW,	ASRADCC,
 	"SRDCC",	LSHW,	ASRDCC,
+	"STBCCC",	LXST,	ASTBCCC,
+	"STHCCC",	LXST,	ASTHCCC,
 	"STDCCC",	LXST,	ASTDCCC,
+	"STQCCC",	LXST,	ASTQCCC,
 	"TD",	LADDW,	ATD,
 
 	/* pseudo instructions */
--- a/sys/src/cmd/9c/9.out.h
+++ b/sys/src/cmd/9c/9.out.h
@@ -362,6 +362,12 @@
 	AHRFID,
 
 	ALWSYNC,
+	ALBAR,
+	ALHAR,
+	ALQAR,
+	ASTBCCC,
+	ASTHCCC,
+	ASTQCCC,
 
 	ALAST
 };
--- a/sys/src/cmd/9l/asmout.c
+++ b/sys/src/cmd/9l/asmout.c
@@ -1452,10 +1452,14 @@
 	case AMOVHZ:	return OPVCC(31,279,0,0);	/* lhzx */
 	case AMOVHZU:	return OPVCC(31,311,0,0);	/* lhzux */
 	case AECIWX:	return OPVCC(31,310,0,0);	/* eciwx */
+	case ALHAR:	return OPVCC(31,116,0,0);	/* lharx */
 	case ALWAR:	return OPVCC(31,20,0,0);	/* lwarx */
+	case ALDAR:	return OPVCC(31,84,0,0);	/* ldarx */
+	case ALQAR:	return OPVCC(31,276,0,0);	/* lqarx */
 	case ALSW:	return OPVCC(31,533,0,0);	/* lswx */
 	case AMOVD:	return OPVCC(31,21,0,0);	/* ldx */
 	case AMOVDU:	return OPVCC(31,53,0,0);	/* ldux */
+	case ALBAR:	return OPVCC(31,52,0,0);	/* lbarx */
 	}
 	diag("bad loadx opcode %A", a);
 	return 0;
@@ -1519,8 +1523,11 @@
 	case AMOVWU:	return OPVCC(31,183,0,0);	/* stwux */
 	case ASTSW:	return OPVCC(31,661,0,0);	/* stswx */
 	case AMOVWBR:	return OPVCC(31,662,0,0);	/* stwbrx */
+	case ASTBCCC:	return OPVCC(31,694,0,0);	/* stbcx */
+	case ASTHCCC:	return OPVCC(31,726,0,0);	/* sthcx */
 	case ASTWCCC:	return OPVCC(31,150,0,1);	/* stwcx. */
 	case ASTDCCC:	return OPVCC(31,214,0,1);	/* stwdx. */
+	case ASTQCCC:	return OPVCC(31,182,0,1);	/* stqcx. */
 	case AECOWX:	return OPVCC(31,438,0,0);	/* ecowx */
 	case AMOVD:	return OPVCC(31,149,0,0);	/* stdx */
 	case AMOVDU:	return OPVCC(31,181,0,0);	/* stdux */
--- a/sys/src/cmd/9l/span.c
+++ b/sys/src/cmd/9l/span.c
@@ -530,7 +530,11 @@
 			oprange[AICBI] = oprange[r];
 			break;
 		case AECOWX:	/* indexed store: op s,(b+a); op s,(b) */
+			oprange[ASTBCCC] = oprange[r];
+			oprange[ASTHCCC] = oprange[r];
 			oprange[ASTWCCC] = oprange[r];
+			oprange[ASTDCCC] = oprange[r];
+			oprange[ASTQCCC] = oprange[r];
 			break;
 		case AREM:	/* macro */
 			oprange[AREMCC] = oprange[r];
@@ -809,7 +813,11 @@
 			oprange[AFMOVSU] = oprange[r];
 			break;
 		case AECIWX:
+			oprange[ALBAR] = oprange[r];
+			oprange[ALHAR] = oprange[r];
 			oprange[ALWAR] = oprange[r];
+			oprange[ALDAR] = oprange[r];
+			oprange[ALQAR] = oprange[r];
 			break;
 		case ASYSCALL:	/* just the op; flow of control */
 			oprange[ARFI] = oprange[r];
--- a/sys/src/libmach/qdb.c
+++ b/sys/src/libmach/qdb.c
@@ -1218,8 +1218,11 @@
 	{46,	0,	0,	"MOVMW",	load,	ldop},
 	{31,	597,	ALL,	"LSW",		gen,	"(R%a),$%n,R%d"},
 	{31,	533,	ALL,	"LSW",		ldx,	0},
+	{31,	52,	ALL,	"LBAR",		ldx,	0},
+	{31,	116,	ALL,	"LHAR",		ldx,	0},
 	{31,	20,	ALL,	"LWAR",		ldx,	0},
-	{31,	84,	ALL,	"LWARD",	ldx,	0},	/* 64 */
+	{31,	84,	ALL,	"LDAR",		ldx,	0},	/* 64 */
+	{31,	276,	ALL,	"LQAR",		ldx,	0},	/* 64 */
 
 	{58,	0,	ALL,	"MOVD",		load,	ldop},	/* 64 */
 	{58,	1,	ALL,	"MOVDU",	load,	ldop},	/* 64 */
@@ -1378,8 +1381,11 @@
 	{31,	661,	ALL,	"STSW",		stx,	0},
 	{36,	0,	0,	"MOVW",		store,	stop},
 	{31,	662,	ALL,	"MOVWBR",	stx,	0},
+	{31,	694,	ALL,	"STBCCC",	stx,	0},
+	{31,	726,	ALL,	"STHCCC",	stx,	0},
 	{31,	150,	ALL,	"STWCCC",	stx,	0},
 	{31,	214,	ALL,	"STDCCC",	stx,	0},	/* 64 */
+	{31,	182,	ALL,	"STQCCC",	stx,	0},	/* 64 */
 	{37,	0,	0,	"MOVWU",	store,	stop},
 	{31,	183,	ALL,	"MOVWU",	stx,	0},
 	{31,	151,	ALL,	"MOVW",		stx,	0},
@@ -1865,9 +1871,6 @@
 	{31,	435,	ALL,	"mtvsrdd",	0,	0},
 	{31,	755,	ALL,	"darn",	0,	0},
 	{31,	979,	ALL,	"slbfee.",	0,	0},
-	{31,	52,	ALL,	"lbarx",	0,	0},
-	{31,	116,	ALL,	"lharx",	0,	0},
-	{31,	276,	ALL,	"lqarx",	0,	0},
 	{31,	532,	ALL,	"ldbrx",	0,	0},
 	{31,	660,	ALL,	"stdbrx",	0,	0},
 	{31,	789,	ALL,	"lwzcix",	0,	0},
@@ -1880,9 +1883,6 @@
 	{31,	1013,	ALL,	"stdcix",	0,	0},
 	{31,	22,	ALL,	"icbt",	0,	0},
 	{31,	886,	ALL,	"msgsync",	0,	0},
-	{31,	182,	ALL,	"stqcx.",	0,	0},
-	{31,	694,	ALL,	"stbcx.",	0,	0},
-	{31,	726,	ALL,	"sthcx.",	0,	0},
 	{31,	503,	ALL,	"spom",	0,	0},
 	{31,	791,	ALL,	"lfdpx",	0,	0},
 	{31,	855,	ALL,	"lfiwax",	0,	0},