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v[al], libmach: add LL (load-linked) and SC (store-conditional)

--- a/sys/src/cmd/va/lex.c

+++ b/sys/src/cmd/va/lex.c

@@ -334,6 +334,8 @@

 	"MOVWR",	LTYPE3, AMOVWR,

 	"MOVVL",	LTYPE3, AMOVVL,

 	"MOVVR",	LTYPE3, AMOVVR,

+	"LL",		LTYPE3, ALL,

+	"SC",		LTYPE3, ASC,

 	"BREAK",	LTYPEJ, ABREAK,		/* overloaded CACHE opcode */

 	"END",		LTYPE4, AEND,

--- a/sys/src/cmd/vc/v.out.h

+++ b/sys/src/cmd/vc/v.out.h

@@ -155,6 +155,9 @@

 	ASIGNAME,

+	ALL,

+	ASC,

+

 	ALAST,

 };

--- a/sys/src/cmd/vl/asm.c

+++ b/sys/src/cmd/vl/asm.c

@@ -1470,6 +1470,9 @@

 	case AADDV:		return SP(3,0);

 	case AADDVU:		return SP(3,1);

+

+	case ALL:		return SP(6,0);

+	case ASC:		return SP(7,0);

 	}

 	diag("bad irr %d", a);

 	return 0;

--- a/sys/src/cmd/vl/optab.c

+++ b/sys/src/cmd/vl/optab.c

@@ -228,5 +228,8 @@

 	{ ACASE,	C_REG,	C_NONE,	C_NONE,		 45, 28, 0 },

 	{ ABCASE,	C_LCON,	C_NONE,	C_LBRA,		 46, 4, 0 },

+	{ ALL,		C_REG,	C_NONE,	C_SOREG,	 7, 4, REGZERO },

+	{ ASC,		C_REG,	C_NONE,	C_SOREG,	 7, 4, REGZERO }, 

+

 	{ AXXX,		C_NONE,	C_NONE,	C_NONE,		 0, 4, 0 },

 };

--- a/sys/src/cmd/vl/span.c

+++ b/sys/src/cmd/vl/span.c

@@ -612,6 +612,8 @@

 		case AMOVV:

 			buildrep(8, AMOVV);

 			break;

+		case ALL:

+		case ASC:

 		case ABREAK:

 		case AWORD:

 		case ARFE:

--- a/sys/src/libmach/vdb.c

+++ b/sys/src/libmach/vdb.c

@@ -559,7 +559,7 @@

 	"MOVVR",    store,	mipsstore,

 	"swr",		0,	mipscoload,

 	"CACHE",	0,	"%C,%l",

-	"ll",		0,	mipscoload,

+	"LL",		0,	mipscoload,

 	"MOVW",	     lwc1,	mipscoload,

 	"lwc2",		0,	mipscoload,

 	"lwc3",		0,	mipscoload,

@@ -567,7 +567,7 @@

 	"ldc1",		0,	mipscoload,

 	"ldc2",		0,	mipscoload,

 	"MOVV",	    load,	mipsload,

-	"sc",		0,	mipscoload,

+	"SC",		0,	mipscoload,

 	"swc1",	     swc1,	mipscoload,

 	"swc2",		0,	mipscoload,

 	"swc3",		0,	mipscoload,

-- 

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