Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 555 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/ia64/fpu/e_fmod.S b/REORG.TODO/sysdeps/ia64/fpu/e_fmod.S
new file mode 100644
index 0000000000..c29056e34a
--- /dev/null
+++ b/REORG.TODO/sysdeps/ia64/fpu/e_fmod.S
@@ -0,0 +1,555 @@
+.file "fmod.s"
+
+
+// Copyright (c) 2000 - 2003, Intel Corporation
+// All rights reserved.
+//
+// Contributed 2000 by the Intel Numerics Group, Intel Corporation
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// * The name of Intel Corporation may not be used to endorse or promote
+// products derived from this software without specific prior written
+// permission.
+
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Intel Corporation is the author of this code, and requests that all
+// problem reports or change requests be submitted to it directly at
+// http://www.intel.com/software/products/opensource/libraries/num.htm.
+//
+// History
+//====================================================================
+// 02/02/00 Initial version
+// 03/02/00 New Algorithm
+// 04/04/00 Unwind support added
+// 08/15/00 Bundle added after call to __libm_error_support to properly
+//          set [the previously overwritten] GR_Parameter_RESULT.
+// 11/28/00 Set FR_Y to f9
+// 03/11/02 Fixed flags for fmod(qnan,zero)
+// 05/20/02 Cleaned up namespace and sf0 syntax
+// 02/10/03 Reordered header: .section, .global, .proc, .align
+// 04/28/03 Fix: fmod(sNaN,0) no longer sets errno
+//
+// API
+//====================================================================
+// double fmod(double,double);
+//
+// Overview of operation
+//====================================================================
+//  fmod(a,b)=a-i*b,
+//  where i is an integer such that, if b!=0,
+//  |i|<|a/b| and |a/b-i|<1
+//
+// Algorithm
+//====================================================================
+// a). if |a|<|b|, return a
+// b). get quotient and reciprocal overestimates accurate to
+//     33 bits (q2,y2)
+// c). if the exponent difference (exponent(a)-exponent(b))
+//     is less than 32, truncate quotient to integer and
+//     finish in one iteration
+// d). if exponent(a)-exponent(b)>=32 (q2>=2^32)
+//     round quotient estimate to single precision (k=RN(q2)),
+//     calculate partial remainder (a'=a-k*b),
+//     get quotient estimate (a'*y2), and repeat from c).
+//
+// Special cases
+//====================================================================
+// b=+/-0: return NaN, call libm_error_support
+// a=+/-Inf, a=NaN or b=NaN: return NaN
+//
+// Registers used
+//====================================================================
+// Predicate registers: p6-p11
+// General registers:   r2,r29,r32 (ar.pfs), r33-r39
+// Floating point registers: f6-f15
+
+GR_SAVE_B0                    = r33
+GR_SAVE_PFS                   = r34
+GR_SAVE_GP                    = r35
+GR_SAVE_SP                    = r36
+
+GR_Parameter_X                = r37
+GR_Parameter_Y                = r38
+GR_Parameter_RESULT           = r39
+GR_Parameter_TAG              = r40
+
+FR_X             = f10
+FR_Y             = f9
+FR_RESULT        = f8
+
+
+.section .text
+GLOBAL_IEEE754_ENTRY(fmod)
+
+// inputs in f8, f9
+// result in f8
+
+{ .mfi
+  alloc r32=ar.pfs,1,4,4,0
+  // f6=|a|
+  fmerge.s f6=f0,f8
+  mov r2 = 0x0ffdd
+}
+  {.mfi
+  nop.m 0
+  // f7=|b|
+  fmerge.s f7=f0,f9
+  nop.i 0;;
+}
+
+{ .mfi
+  setf.exp f11 = r2
+  // (1) y0
+  frcpa.s1 f10,p6=f6,f7
+  nop.i 0
+}
+
+// Y +-NAN, +-inf, +-0?     p7
+{ .mfi
+      nop.m 999
+      fclass.m.unc  p7,p0 = f9, 0xe7
+      nop.i 999;;
+}
+
+// qnan snan inf norm     unorm 0 -+
+// 1    1    1   0        0     0 11
+// e                      3
+// X +-NAN, +-inf, ?        p9
+
+{ .mfi
+      nop.m 999
+      fclass.m.unc  p9,p0 = f8, 0xe3
+      nop.i 999
+}
+
+// |x| < |y|? Return x p8
+{ .mfi
+      nop.m 999
+      fcmp.lt.unc.s1 p8,p0 = f6,f7
+      nop.i 999 ;;
+}
+
+{ .mfi
+  nop.m 0
+  // normalize y (if |x|<|y|)
+  (p8) fma.s0 f9=f9,f1,f0
+  nop.i 0;;
+}
+
+  { .mfi
+  mov r2=0x1001f
+  // (2) q0=a*y0
+  (p6) fma.s1 f13=f6,f10,f0
+  nop.i 0
+}
+{ .mfi
+  nop.m 0
+  // (3) e0 = 1 - b * y0
+  (p6) fnma.s1 f12=f7,f10,f1
+  nop.i 0;;
+}
+
+  {.mfi
+  nop.m 0
+  // normalize x (if |x|<|y|)
+  (p8) fma.d.s0 f8=f8,f1,f0
+  nop.i 0
+}
+{.bbb
+  (p9) br.cond.spnt FMOD_X_NAN_INF
+  (p7) br.cond.spnt FMOD_Y_NAN_INF_ZERO
+  // if |x|<|y|, return
+  (p8) br.ret.spnt    b0;;
+}
+
+  {.mfi
+  nop.m 0
+  // normalize x
+  fma.s0 f6=f6,f1,f0
+  nop.i 0
+}
+{.mfi
+  nop.m 0
+  // normalize y
+  fma.s0 f7=f7,f1,f0
+  nop.i 0;;
+}
+
+  {.mfi
+  // f15=2^32
+  setf.exp f15=r2
+  // (4) q1=q0+e0*q0
+  (p6) fma.s1 f13=f12,f13,f13
+  nop.i 0
+}
+{ .mfi
+  nop.m 0
+  // (5) e1 = e0 * e0 + 2^-34
+  (p6) fma.s1 f14=f12,f12,f11
+  nop.i 0;;
+}
+{.mlx
+  nop.m 0
+  movl r2=0x33a00000;;
+}
+{ .mfi
+  nop.m 0
+  // (6) y1 = y0 + e0 * y0
+  (p6) fma.s1 f10=f12,f10,f10
+  nop.i 0;;
+}
+{.mfi
+  // set f12=1.25*2^{-24}
+  setf.s f12=r2
+  // (7) q2=q1+e1*q1
+  (p6) fma.s1 f13=f13,f14,f13
+  nop.i 0;;
+}
+{.mfi
+  nop.m 0
+  fmerge.s f9=f8,f9
+  nop.i 0
+}
+{ .mfi
+  nop.m 0
+  // (8) y2 = y1 + e1 * y1
+  (p6) fma.s1 f10=f14,f10,f10
+  // set p6=0, p10=0
+  cmp.ne.and p6,p10=r0,r0;;
+}
+
+.align 32
+loop53:
+  {.mfi
+  nop.m 0
+  // compare q2, 2^32
+  fcmp.lt.unc.s1 p8,p7=f13,f15
+  nop.i 0
+}
+  {.mfi
+  nop.m 0
+  // will truncate quotient to integer, if exponent<32 (in advance)
+  fcvt.fx.trunc.s1 f11=f13
+  nop.i 0;;
+}
+  {.mfi
+  nop.m 0
+  // if exponent>32, round quotient to single precision (perform in advance)
+  fma.s.s1 f13=f13,f1,f0
+  nop.i 0;;
+}
+  {.mfi
+  nop.m 0
+  // set f12=sgn(a)
+  (p8) fmerge.s f12=f8,f1
+  nop.i 0
+}
+  {.mfi
+  nop.m 0
+  // normalize truncated quotient
+  (p8) fcvt.xf f13=f11
+  nop.i 0;;
+}
+  { .mfi
+  nop.m 0
+  // calculate remainder (assuming f13=RZ(Q))
+  (p7) fnma.s1 f14=f13,f7,f6
+  nop.i 0
+}
+  {.mfi
+  nop.m 0
+  // also if exponent>32, round quotient to single precision
+  // and subtract 1 ulp: q=q-q*(1.25*2^{-24})
+  (p7) fnma.s.s1 f11=f13,f12,f13
+  nop.i 0;;
+}
+
+  {.mfi
+  nop.m 0
+  // (p8) calculate remainder (82-bit format)
+  (p8) fnma.s1 f11=f13,f7,f6
+  nop.i 0
+}
+  {.mfi
+  nop.m 0
+  // (p7) calculate remainder (assuming f11=RZ(Q))
+  (p7) fnma.s1 f6=f11,f7,f6
+  nop.i 0;;
+}
+
+
+  {.mfi
+  nop.m 0
+  // Final iteration (p8): is f6 the correct remainder (quotient was not overestimated) ?
+  (p8) fcmp.lt.unc.s1 p6,p10=f11,f0
+  nop.i 0;;
+}
+  {.mfi
+  nop.m 0
+  // get new quotient estimation: a'*y2
+  (p7) fma.s1 f13=f14,f10,f0
+  nop.i 0
+}
+  {.mfb
+  nop.m 0
+  // was f14=RZ(Q) ? (then new remainder f14>=0)
+  (p7) fcmp.lt.unc.s1 p7,p9=f14,f0
+  nop.b 0;;
+}
+
+
+.pred.rel "mutex",p6,p10
+  {.mfb
+  nop.m 0
+  // add b to estimated remainder (to cover the case when the quotient was overestimated)
+  // also set correct sign by using f9=|b|*sgn(a), f12=sgn(a)
+  (p6) fma.d.s0 f8=f11,f12,f9
+  nop.b 0
+}
+  {.mfb
+  nop.m 0
+  // calculate remainder (single precision)
+  // set correct sign of result before returning
+  (p10) fma.d.s0 f8=f11,f12,f0
+  (p8) br.ret.sptk b0;;
+}
+  {.mfi
+  nop.m 0
+  // if f13!=RZ(Q), get alternative quotient estimation: a''*y2
+  (p7) fma.s1 f13=f6,f10,f0
+  nop.i 0
+}
+  {.mfb
+  nop.m 0
+  // if f14 was RZ(Q), set remainder to f14
+  (p9) mov f6=f14
+  br.cond.sptk loop53;;
+}
+
+
+
+FMOD_X_NAN_INF:
+
+// Y zero ?
+{.mfi
+  nop.m 0
+  fclass.m p10,p0=f8,0xc3     // Test x=nan
+  nop.i 0
+}
+{.mfi
+  nop.m 0
+  fma.s1 f10=f9,f1,f0
+  nop.i 0;;
+}
+
+{.mfi
+  nop.m 0
+  fma.s0 f8=f8,f1,f0
+  nop.i 0
+}
+{.mfi
+  nop.m 0
+(p10) fclass.m p10,p0=f9,0x07 // Test x=nan, and y=zero
+  nop.i 0;;
+}
+
+{.mfb
+ nop.m 0
+ fcmp.eq.unc.s1 p11,p0=f10,f0
+(p10) br.ret.spnt b0;;        // Exit with result=x if x=nan and y=zero
+}
+{.mib
+  nop.m 0
+  nop.i 0
+  // if Y zero
+  (p11) br.cond.spnt FMOD_Y_ZERO;;
+}
+
+// X infinity? Return QNAN indefinite
+{ .mfi
+      nop.m 999
+      fclass.m.unc  p8,p9 = f8, 0x23
+      nop.i 999;;
+}
+// Y NaN ?
+{.mfi
+     nop.m 999
+(p8) fclass.m p9,p8=f9,0xc3
+     nop.i 0;;
+}
+{.mfi
+      nop.m 999
+(p8)  frcpa.s0 f8,p0 = f8,f8
+      nop.i 0
+}
+{ .mfi
+      nop.m 999
+    // also set Denormal flag if necessary
+(p8)  fma.s0 f9=f9,f1,f0
+      nop.i 999 ;;
+}
+
+{ .mfb
+      nop.m 999
+(p8)  fma.d.s0 f8=f8,f1,f0
+      nop.b 999 ;;
+}
+
+{ .mfb
+      nop.m 999
+(p9)  frcpa.s0 f8,p7=f8,f9
+      br.ret.sptk   b0 ;;
+}
+
+
+FMOD_Y_NAN_INF_ZERO:
+
+// Y INF
+{ .mfi
+      nop.m 999
+      fclass.m.unc  p7,p0 = f9, 0x23
+      nop.i 999 ;;
+}
+
+{ .mfb
+      nop.m 999
+(p7)  fma.d.s0 f8=f8,f1,f0
+(p7)  br.ret.spnt    b0 ;;
+}
+
+// Y NAN?
+{ .mfi
+      nop.m 999
+      fclass.m.unc  p9,p0 = f9, 0xc3
+      nop.i 999 ;;
+}
+
+{ .mfb
+      nop.m 999
+(p9)  fma.d.s0 f8=f9,f1,f0
+(p9)  br.ret.spnt    b0 ;;
+}
+
+FMOD_Y_ZERO:
+// Y zero? Must be zero at this point
+// because it is the only choice left.
+// Return QNAN indefinite
+
+{.mfi
+  nop.m 0
+  // set Invalid
+  frcpa.s0 f12,p0=f0,f0
+  nop.i 0
+}
+// X NAN?
+{ .mfi
+      nop.m 999
+      fclass.m.unc  p9,p10 = f8, 0xc3
+      nop.i 999 ;;
+}
+{ .mfi
+      nop.m 999
+(p10)  fclass.nm  p9,p10 = f8, 0xff
+      nop.i 999 ;;
+}
+
+{.mfi
+ nop.m 999
+ (p9) frcpa.s0 f11,p7=f8,f0
+ nop.i 0;;
+}
+
+{ .mfi
+      nop.m 999
+(p10)  frcpa.s0         f11,p7 = f9,f9
+      mov        GR_Parameter_TAG = 121 ;;
+}
+
+{ .mfi
+      nop.m 999
+      fmerge.s      f10 = f8, f8
+      nop.i 999
+}
+
+{ .mfb
+      nop.m 999
+      fma.d.s0 f8=f11,f1,f0
+      br.sptk __libm_error_region;;
+}
+
+GLOBAL_IEEE754_END(fmod)
+
+LOCAL_LIBM_ENTRY(__libm_error_region)
+.prologue
+{ .mfi
+        add   GR_Parameter_Y=-32,sp             // Parameter 2 value
+        nop.f 0
+.save   ar.pfs,GR_SAVE_PFS
+        mov  GR_SAVE_PFS=ar.pfs                 // Save ar.pfs
+}
+{ .mfi
+.fframe 64
+        add sp=-64,sp                           // Create new stack
+        nop.f 0
+        mov GR_SAVE_GP=gp                       // Save gp
+};;
+{ .mmi
+        stfd [GR_Parameter_Y] = FR_Y,16         // Save Parameter 2 on stack
+        add GR_Parameter_X = 16,sp              // Parameter 1 address
+.save   b0, GR_SAVE_B0
+        mov GR_SAVE_B0=b0                       // Save b0
+};;
+.body
+{ .mib
+        stfd [GR_Parameter_X] = FR_X            // Store Parameter 1 on stack
+        add   GR_Parameter_RESULT = 0,GR_Parameter_Y
+    nop.b 0                                 // Parameter 3 address
+}
+{ .mib
+        stfd [GR_Parameter_Y] = FR_RESULT      // Store Parameter 3 on stack
+        add   GR_Parameter_Y = -16,GR_Parameter_Y
+        br.call.sptk b0=__libm_error_support#  // Call error handling function
+};;
+{ .mmi
+        nop.m 0
+        nop.m 0
+        add   GR_Parameter_RESULT = 48,sp
+};;
+{ .mmi
+        ldfd  f8 = [GR_Parameter_RESULT]       // Get return result off stack
+.restore sp
+        add   sp = 64,sp                       // Restore stack pointer
+        mov   b0 = GR_SAVE_B0                  // Restore return address
+};;
+{ .mib
+        mov   gp = GR_SAVE_GP                  // Restore gp
+        mov   ar.pfs = GR_SAVE_PFS             // Restore ar.pfs
+        br.ret.sptk     b0                     // Return
+};;
+
+LOCAL_LIBM_END(__libm_error_region)
+
+
+.type   __libm_error_support#,@function
+.global __libm_error_support#