Import sources from 2011-03-30 iso image

1 files changed, 127 insertions, 0 deletions

diff --git a/sys/src/cmd/2c/bits.c b/sys/src/cmd/2c/bits.c
new file mode 100755
index 000000000..eb8932c4a
--- /dev/null
+++ b/sys/src/cmd/2c/bits.c
@@ -0,0 +1,127 @@
+#define	EXTERN
+#include "gc.h"
+
+/*
+Bits
+bor(Bits a, Bits b)
+{
+	Bits c;
+	int i;
+
+	for(i=0; i<BITS; i++)
+		c.b[i] = a.b[i] | b.b[i];
+	return c;
+}
+*/
+
+/*
+Bits
+band(Bits a, Bits b)
+{
+	Bits c;
+	int i;
+
+	for(i=0; i<BITS; i++)
+		c.b[i] = a.b[i] & b.b[i];
+	return c;
+}
+*/
+
+/*
+Bits
+bnot(Bits a)
+{
+	Bits c;
+	int i;
+
+	for(i=0; i<BITS; i++)
+		c.b[i] = ~a.b[i];
+	return c;
+}
+*/
+
+int
+bany(Bits *a)
+{
+	int i;
+
+	for(i=0; i<BITS; i++)
+		if(a->b[i])
+			return 1;
+	return 0;
+}
+
+/*
+int
+beq(Bits a, Bits b)
+{
+	int i;
+
+	for(i=0; i<BITS; i++)
+		if(a.b[i] != b.b[i])
+			return 0;
+	return 1;
+}
+*/
+
+int
+bnum(Bits a)
+{
+	int i;
+	long b;
+
+	for(i=0; i<BITS; i++)
+		if(b = a.b[i])
+			return 32*i + bitno(b);
+	diag(Z, "bad in bnum");
+	return 0;
+}
+
+Bits
+blsh(unsigned n)
+{
+	Bits c;
+
+	c = zbits;
+	c.b[n/32] = 1L << (n%32);
+	return c;
+}
+
+/*
+int
+bset(Bits a, unsigned n)
+{
+	int i;
+
+	if(a.b[n/32] & (1L << (n%32)))
+		return 1;
+	return 0;
+}
+*/
+
+int
+Bconv(va_list *arg, Fconv *fp)
+{
+	char str[STRINGSZ], ss[STRINGSZ], *s;
+	Bits bits;
+	int i;
+
+	str[0] = 0;
+	bits = va_arg(*arg, Bits);
+	while(bany(&bits)) {
+		i = bnum(bits);
+		if(str[0])
+			strcat(str, " ");
+		if(var[i].sym == S) {
+			sprint(ss, "$%ld", var[i].offset);
+			s = ss;
+		} else
+			s = var[i].sym->name;
+		if(strlen(str) + strlen(s) + 1 >= STRINGSZ)
+			break;
+		strcat(str, s);
+		bits.b[i/32] &= ~(1L << (i%32));
+	}
+	strconv(str, fp);
+	return 0;
+}