mirror of
https://github.com/golang/go
synced 2024-11-20 10:14:43 -07:00
2e1bb76f9b
src/cmd/gc/bits.c: corrected a mistaken format; src/cmd/gc/go.h: %E can accept uints. R=rsc CC=golang-dev https://golang.org/cl/5331041
164 lines
3.1 KiB
C
164 lines
3.1 KiB
C
// Inferno utils/cc/bits.c
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// http://code.google.com/p/inferno-os/source/browse/utils/cc/bits.c
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//
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// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
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// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
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// Portions Copyright © 1997-1999 Vita Nuova Limited
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// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
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// Portions Copyright © 2004,2006 Bruce Ellis
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// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
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// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
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// Portions Copyright © 2009 The Go Authors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#include <u.h>
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#include <libc.h>
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#include "go.h"
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/*
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Bits
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bor(Bits a, Bits b)
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{
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Bits c;
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int i;
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for(i=0; i<BITS; i++)
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c.b[i] = a.b[i] | b.b[i];
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return c;
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}
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Bits
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band(Bits a, Bits b)
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{
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Bits c;
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int i;
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for(i=0; i<BITS; i++)
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c.b[i] = a.b[i] & b.b[i];
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return c;
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}
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Bits
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bnot(Bits a)
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{
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Bits c;
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int i;
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for(i=0; i<BITS; i++)
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c.b[i] = ~a.b[i];
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return c;
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}
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*/
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int
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bany(Bits *a)
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{
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int i;
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for(i=0; i<BITS; i++)
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if(a->b[i])
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return 1;
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return 0;
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}
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/*
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int
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beq(Bits a, Bits b)
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{
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int i;
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for(i=0; i<BITS; i++)
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if(a.b[i] != b.b[i])
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return 0;
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return 1;
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}
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*/
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int
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bnum(Bits a)
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{
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int i;
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int32 b;
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for(i=0; i<BITS; i++)
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if(b = a.b[i])
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return 32*i + bitno(b);
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fatal("bad in bnum");
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return 0;
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}
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Bits
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blsh(uint n)
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{
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Bits c;
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c = zbits;
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c.b[n/32] = 1L << (n%32);
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return c;
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}
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/*
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int
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bset(Bits a, uint n)
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{
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if(a.b[n/32] & (1L << (n%32)))
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return 1;
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return 0;
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}
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*/
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int
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bitno(int32 b)
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{
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int i;
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for(i=0; i<32; i++)
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if(b & (1L<<i))
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return i;
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fatal("bad in bitno");
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return 0;
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}
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int
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Qconv(Fmt *fp)
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{
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Bits bits;
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int i, first;
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first = 1;
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bits = va_arg(fp->args, Bits);
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while(bany(&bits)) {
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i = bnum(bits);
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if(first)
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first = 0;
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else
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fmtprint(fp, " ");
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if(var[i].node == N || var[i].node->sym == S)
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fmtprint(fp, "$%d", i);
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else {
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fmtprint(fp, "%s", var[i].node->sym->name);
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if(var[i].offset != 0)
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fmtprint(fp, "%+lld", (vlong)var[i].offset);
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}
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bits.b[i/32] &= ~(1L << (i%32));
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}
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return 0;
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}
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