Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/mips/math-emu/ieee754int.h b/arch/mips/math-emu/ieee754int.h
new file mode 100644
index 0000000..4a5a81d
--- /dev/null
+++ b/arch/mips/math-emu/ieee754int.h
@@ -0,0 +1,165 @@
+/*
+ * IEEE754 floating point
+ * common internal header file
+ */
+/*
+ * MIPS floating point support
+ * Copyright (C) 1994-2000 Algorithmics Ltd.
+ * http://www.algor.co.uk
+ *
+ * ########################################################################
+ *
+ * This program is free software; you can distribute it and/or modify it
+ * under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * ########################################################################
+ */
+
+
+#include "ieee754.h"
+
+#define DP_EBIAS 1023
+#define DP_EMIN (-1022)
+#define DP_EMAX 1023
+#define DP_MBITS 52
+
+#define SP_EBIAS 127
+#define SP_EMIN (-126)
+#define SP_EMAX 127
+#define SP_MBITS 23
+
+#define DP_MBIT(x) ((u64)1 << (x))
+#define DP_HIDDEN_BIT DP_MBIT(DP_MBITS)
+#define DP_SIGN_BIT DP_MBIT(63)
+
+#define SP_MBIT(x) ((u32)1 << (x))
+#define SP_HIDDEN_BIT SP_MBIT(SP_MBITS)
+#define SP_SIGN_BIT SP_MBIT(31)
+
+
+#define SPSIGN(sp) (sp.parts.sign)
+#define SPBEXP(sp) (sp.parts.bexp)
+#define SPMANT(sp) (sp.parts.mant)
+
+#define DPSIGN(dp) (dp.parts.sign)
+#define DPBEXP(dp) (dp.parts.bexp)
+#define DPMANT(dp) (dp.parts.mant)
+
+#define CLPAIR(x,y) ((x)*6+(y))
+
+#define CLEARCX \
+ (ieee754_csr.cx = 0)
+
+#define SETCX(x) \
+ (ieee754_csr.cx |= (x),ieee754_csr.sx |= (x))
+
+#define SETANDTESTCX(x) \
+ (SETCX(x),ieee754_csr.mx & (x))
+
+#define TSTX() \
+ (ieee754_csr.cx & ieee754_csr.mx)
+
+
+#define COMPXSP \
+ unsigned xm; int xe; int xs; int xc
+
+#define COMPYSP \
+ unsigned ym; int ye; int ys; int yc
+
+#define EXPLODESP(v,vc,vs,ve,vm) \
+{\
+ vs = SPSIGN(v);\
+ ve = SPBEXP(v);\
+ vm = SPMANT(v);\
+ if(ve == SP_EMAX+1+SP_EBIAS){\
+ if(vm == 0)\
+ vc = IEEE754_CLASS_INF;\
+ else if(vm & SP_MBIT(SP_MBITS-1)) \
+ vc = IEEE754_CLASS_SNAN;\
+ else \
+ vc = IEEE754_CLASS_QNAN;\
+ } else if(ve == SP_EMIN-1+SP_EBIAS) {\
+ if(vm) {\
+ ve = SP_EMIN;\
+ vc = IEEE754_CLASS_DNORM;\
+ } else\
+ vc = IEEE754_CLASS_ZERO;\
+ } else {\
+ ve -= SP_EBIAS;\
+ vm |= SP_HIDDEN_BIT;\
+ vc = IEEE754_CLASS_NORM;\
+ }\
+}
+#define EXPLODEXSP EXPLODESP(x,xc,xs,xe,xm)
+#define EXPLODEYSP EXPLODESP(y,yc,ys,ye,ym)
+
+
+#define COMPXDP \
+u64 xm; int xe; int xs; int xc
+
+#define COMPYDP \
+u64 ym; int ye; int ys; int yc
+
+#define EXPLODEDP(v,vc,vs,ve,vm) \
+{\
+ vm = DPMANT(v);\
+ vs = DPSIGN(v);\
+ ve = DPBEXP(v);\
+ if(ve == DP_EMAX+1+DP_EBIAS){\
+ if(vm == 0)\
+ vc = IEEE754_CLASS_INF;\
+ else if(vm & DP_MBIT(DP_MBITS-1)) \
+ vc = IEEE754_CLASS_SNAN;\
+ else \
+ vc = IEEE754_CLASS_QNAN;\
+ } else if(ve == DP_EMIN-1+DP_EBIAS) {\
+ if(vm) {\
+ ve = DP_EMIN;\
+ vc = IEEE754_CLASS_DNORM;\
+ } else\
+ vc = IEEE754_CLASS_ZERO;\
+ } else {\
+ ve -= DP_EBIAS;\
+ vm |= DP_HIDDEN_BIT;\
+ vc = IEEE754_CLASS_NORM;\
+ }\
+}
+#define EXPLODEXDP EXPLODEDP(x,xc,xs,xe,xm)
+#define EXPLODEYDP EXPLODEDP(y,yc,ys,ye,ym)
+
+#define FLUSHDP(v,vc,vs,ve,vm) \
+ if(vc==IEEE754_CLASS_DNORM) {\
+ if(ieee754_csr.nod) {\
+ SETCX(IEEE754_INEXACT);\
+ vc = IEEE754_CLASS_ZERO;\
+ ve = DP_EMIN-1+DP_EBIAS;\
+ vm = 0;\
+ v = ieee754dp_zero(vs);\
+ }\
+ }
+
+#define FLUSHSP(v,vc,vs,ve,vm) \
+ if(vc==IEEE754_CLASS_DNORM) {\
+ if(ieee754_csr.nod) {\
+ SETCX(IEEE754_INEXACT);\
+ vc = IEEE754_CLASS_ZERO;\
+ ve = SP_EMIN-1+SP_EBIAS;\
+ vm = 0;\
+ v = ieee754sp_zero(vs);\
+ }\
+ }
+
+#define FLUSHXDP FLUSHDP(x,xc,xs,xe,xm)
+#define FLUSHYDP FLUSHDP(y,yc,ys,ye,ym)
+#define FLUSHXSP FLUSHSP(x,xc,xs,xe,xm)
+#define FLUSHYSP FLUSHSP(y,yc,ys,ye,ym)