libbio, all cmd: consistently use BGETC/BPUTC instead of Bgetc/Bputc

Also introduce BGET2/4, BPUT2/4 as they are widely used.
Slightly improve BGETC/BPUTC implementation.
This gives ~5% CPU time improvement on go install -a -p1 std.
Before:
real		user		sys
0m23.561s	0m16.625s	0m5.848s
0m23.766s	0m16.624s	0m5.846s
0m23.742s	0m16.621s	0m5.868s
after:
0m22.999s	0m15.841s	0m5.889s
0m22.845s	0m15.808s	0m5.850s
0m22.889s	0m15.832s	0m5.848s

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/12745047

1 files changed, 9 insertions, 9 deletions

diff --git a/src/cmd/5l/obj.c b/src/cmd/5l/obj.c
index 824a05fd8d..0b687a2ee8 100644
--- a/src/cmd/5l/obj.c
+++ b/src/cmd/5l/obj.c
@@ -334,7 +334,7 @@ zaddr(char *pn, Biobuf *f, Adr *a, Sym *h[])
 	c = BGETC(f);
 	if(c < 0 || c > NSYM){
 		print("sym out of range: %d\n", c);
-		Bputc(f, ALAST+1);
+		BPUTC(f, ALAST+1);
 		return;
 	}
 	a->sym = h[c];
@@ -343,7 +343,7 @@ zaddr(char *pn, Biobuf *f, Adr *a, Sym *h[])
 
 	if((schar)a->reg < 0 || a->reg > NREG) {
 		print("register out of range %d\n", a->reg);
-		Bputc(f, ALAST+1);
+		BPUTC(f, ALAST+1);
 		return;	/*  force real diagnostic */
 	}
 
@@ -361,7 +361,7 @@ zaddr(char *pn, Biobuf *f, Adr *a, Sym *h[])
 	switch(a->type) {
 	default:
 		print("unknown type %d\n", a->type);
-		Bputc(f, ALAST+1);
+		BPUTC(f, ALAST+1);
 		return;	/*  force real diagnostic */
 
 	case D_NONE:
@@ -377,13 +377,13 @@ zaddr(char *pn, Biobuf *f, Adr *a, Sym *h[])
 		break;
 
 	case D_CONST2:
-		a->offset2 = Bget4(f);	// fall through
+		a->offset2 = BGETLE4(f);	// fall through
 	case D_BRANCH:
 	case D_OREG:
 	case D_CONST:
 	case D_OCONST:
 	case D_SHIFT:
-		a->offset = Bget4(f);
+		a->offset = BGETLE4(f);
 		break;
 
 	case D_SCONST:
@@ -392,8 +392,8 @@ zaddr(char *pn, Biobuf *f, Adr *a, Sym *h[])
 		break;
 
 	case D_FCONST:
-		a->ieee.l = Bget4(f);
-		a->ieee.h = Bget4(f);
+		a->ieee.l = BGETLE4(f);
+		a->ieee.h = BGETLE4(f);
 		break;
 	}
 	s = a->sym;
@@ -476,7 +476,7 @@ loop:
 	if(o == ANAME || o == ASIGNAME) {
 		sig = 0;
 		if(o == ASIGNAME)
-			sig = Bget4(f);
+			sig = BGETLE4(f);
 		v = BGETC(f); /* type */
 		o = BGETC(f); /* sym */
 		r = 0;
@@ -531,7 +531,7 @@ loop:
 	p->as = o;
 	p->scond = BGETC(f);
 	p->reg = BGETC(f);
-	p->line = Bget4(f);
+	p->line = BGETLE4(f);
 
 	zaddr(pn, f, &p->from, h);
 	fromgotype = adrgotype;