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, 438 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/ia64/fpu/e_hypot.S b/REORG.TODO/sysdeps/ia64/fpu/e_hypot.S
new file mode 100644
index 0000000000..146bb2fb1b
--- /dev/null
+++ b/REORG.TODO/sysdeps/ia64/fpu/e_hypot.S
@@ -0,0 +1,438 @@
+.file "hypot.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 hand-optimized
+// 04/04/00 Unwind support added
+// 06/20/00 new version
+// 08/15/00 Bundle added after call to __libm_error_support to properly
+//          set [the previously overwritten] GR_Parameter_RESULT.
+// 05/20/02 Cleaned up namespace and sf0 syntax
+// 02/10/03 Reordered header: .section, .global, .proc, .align
+// 04/17/03 Added missing mutex directive
+//
+//*********************************************************************
+//                           ___________
+// Function:   hypot(x,y) = |(x^2 + y^2) = for double precision values
+//             x and y
+//             Also provides cabs functionality.
+//
+//*********************************************************************
+//
+// Resources Used:
+//
+//    Floating-Point Registers: f8  (Input and Return Value)
+//                              f9  (Input)
+//                              f6 -f15, f32-f34
+//
+//    General Purpose Registers:
+//      r2,r3,r29 (Scratch)
+//      r32-r36 (Locals)
+//      r37-r40 (Used to pass arguments to error handling routine)
+//
+//    Predicate Registers:      p6 - p10
+//
+//*********************************************************************
+//
+// IEEE Special Conditions:
+//
+//    All faults and exceptions should be raised correctly.
+//    Overflow can occur.
+//    hypot(Infinity and anything) = +Infinity
+//    hypot(QNaN and anything) = QNaN
+//    hypot(SNaN and anything ) = QNaN
+//
+//*********************************************************************
+//
+// Implementation:
+//  x2 = x * x   in double-extended
+//  y2 = y * y   in double-extended
+//  temp = x2 + y2   in double-extended
+//  sqrt(temp) rounded to double
+//
+//*********************************************************************
+
+GR_SAVE_PFS         = r33
+GR_SAVE_B0          = r34
+GR_SAVE_GP          = r35
+GR_Parameter_X      = r36
+GR_Parameter_Y      = r37
+GR_Parameter_RESULT = r38
+GR_Parameter_TAG    = r39
+
+FR_X                = f32
+FR_Y                = f33
+FR_RESULT           = f8
+
+.section .text
+
+LOCAL_LIBM_ENTRY(cabs)
+LOCAL_LIBM_END(cabs)
+
+GLOBAL_IEEE754_ENTRY(hypot)
+
+{.mfi
+  alloc r32= ar.pfs,0,4,4,0
+  // Compute x*x
+  fma.s1 f10=f8,f8,f0
+  // r2=bias-1
+  mov r2=0xfffe
+}
+{.mfi
+  // 63/8
+  mov r3=0x40fc //0000
+  // y*y
+  fma.s1 f11=f9,f9,f0
+  // r29=429/16
+  mov r29=0x41d68;; //000
+}
+
+{ .mfi
+     nop.m 0
+//   Check if x is an Inf - if so return Inf even
+//   if y is a NaN (C9X)
+     fclass.m.unc p7, p6 = f8, 0x023
+     shl r3=r3,16
+}
+{.mfi
+	nop.m 0
+  // if possible overflow, copy f8 to f32
+  // set Denormal, if necessary
+  // (p8)
+  fma.d.s0 f32=f8,f1,f0
+  nop.i 0;;
+}
+{ .mfi
+     nop.m 0
+//   Check if y is an Inf - if so return Inf even
+//   if x is a NaN (C9X)
+     fclass.m.unc p8, p9 = f9, 0x023
+     shl r29=r29,12
+}
+{ .mfb
+	 // f7=0.5
+	 setf.exp f7=r2
+//   For x=inf, multiply y by 1 to raise invalid on y an SNaN
+//   (p7) fma.s0 f9=f9,f1,f0
+     // copy f9 to f33; set Denormal, if necessary
+	 fma.d.s0 f33=f9,f1,f0
+     nop.b 0;;
+}
+{.mfb
+  // f13=63/8
+  setf.s f13=r3
+  // is y Zero ?
+  (p6) fclass.m p6,p0=f9,0x7
+  nop.b 0
+}
+{.mlx
+  nop.m 0
+  movl r2=0x408c0000;;
+}
+
+{.mfi
+  // f34=429/16
+  setf.s f34=r29
+  // is x Zero ?
+  (p9) fclass.m p9,p0=f8,0x7
+  // 231/16
+  mov r3=0x4167;; //0000
+}
+{.mfi
+  nop.m 0
+  // a=x2+y2
+  fma.s1 f12=f10,f1,f11
+  nop.i 0;;
+}
+{.mfi
+  nop.m 0
+  // y not NaN ?
+  (p9) fclass.m p8,p0=f9,0x3f
+  shl r3=r3,16
+}
+{.mfi
+  nop.m 0
+  // f6=2
+  fma.s1 f6=f1,f1,f1
+  nop.i 0;;
+}
+
+
+{.mfi
+  nop.m 0
+  // x not NaN ?
+  (p6) fclass.m p7,p0=f8,0x3f
+  nop.i 0;;
+}
+{.mfi
+  // f9=35/8
+  setf.s f9=r2
+  nop.f 0
+  // 2*emax-2
+  mov r2=0x107fb;;
+}
+
+.pred.rel "mutex",p7,p8
+{.mfb
+  nop.m 0
+  // if f8=Infinity or f9=Zero, return |f8|
+  (p7) fmerge.s f8=f0,f32
+  (p7) br.ret.spnt b0
+}
+{.mfb
+  nop.m 0
+  // if f9=Infinity or f8=Zero, return |f9|
+  (p8) fmerge.s f8=f0,f33
+  (p8) br.ret.spnt b0;;
+}
+
+
+{.mfi
+  // f10 =231/16
+  setf.s f10=r3
+  // z0=frsqrta(a)
+  frsqrta.s1 f8,p6=f12
+  nop.i 0;;
+}
+
+{ .mfi
+	 nop.m 0
+//   Identify Natvals, Infs, NaNs, and Zeros
+//   and return result
+     fclass.m.unc p7, p0 = f12, 0x1E7
+     nop.i 0;;
+}
+{.mfb
+  // get exponent of x^2+y^2
+  getf.exp r3=f12
+  // if special case, set f8
+  (p7) mov f8=f12
+  (p7) br.ret.spnt b0;;
+}
+
+
+{.mfi
+  nop.m 0
+  // S0=a*z0
+  (p6) fma.s1 f14=f12,f8,f0
+  nop.i 0
+}
+{.mfi
+  nop.m 0
+  // H0=0.5*z0
+  (p6) fma.s1 f15=f8,f7,f0
+  nop.i 0;;
+}
+
+
+{.mfi
+  nop.m 0
+  // f6=5/2
+  fma.s1 f6=f7,f1,f6
+  nop.i 0
+}
+{.mfi
+  nop.m 0
+  // f11=3/2
+  fma.s1 f11=f7,f1,f1
+  nop.i 0;;
+}
+
+{.mfi
+  nop.m 0
+  // d=0.5-S0*H0
+  (p6) fnma.s1 f7=f14,f15,f7
+  nop.i 0;;
+}
+
+{.mfi
+  nop.m 0
+  // P67=231/16+429/16*d
+  (p6) fma.s1 f10=f34,f7,f10
+  nop.i 0
+}
+{.mfi
+  nop.m 0
+  // P45=63/8*d+35/8
+  (p6) fma.s1 f9=f13,f7,f9
+  nop.i 0;;
+}
+{.mfi
+  nop.m 0
+  // P23=5/2*d+3/2
+  (p6) fma.s1 f11=f6,f7,f11
+  nop.i 0
+}
+{.mfi
+  nop.m 0
+  // d2=d*d
+  (p6) fma.s1 f13=f7,f7,f0
+  nop.i 0;;
+}
+
+{.mfi
+  nop.m 0
+  // P47=d2*P67+P45
+  (p6) fma.s1 f10=f10,f13,f9
+  nop.i 0
+}
+{.mfi
+  nop.m 0
+  // P13=d*P23+1
+  (p6) fma.s1 f11=f11,f7,f1
+  nop.i 0;;
+}
+{.mfi
+  nop.m 0
+  // d3=d2*d
+  (p6) fma.s1 f13=f13,f7,f0
+  nop.i 0;;
+}
+
+{.mfi
+  nop.m 0
+  // T0=d*S0
+  (p6) fma.s1 f15=f7,f14,f0
+  nop.i 0
+}
+{.mfi
+  // Is x^2 + y^2 well less than the overflow
+  // threshold?
+  (p6) cmp.lt.unc p7, p8 =  r3,r2
+  // P=P13+d3*P47
+  (p6) fma.s1 f10=f13,f10,f11
+  nop.i 0;;
+}
+
+{.mfb
+  nop.m 0
+  // S=P*T0+S0
+  fma.d.s0 f8=f10,f15,f14
+  // No overflow in this case
+  (p7) br.ret.sptk b0;;
+}
+
+{ .mfi
+     nop.m 0
+(p8) fsetc.s2 0x7F,0x42
+     // Possible overflow path, must detect by
+     // Setting widest range exponent with prevailing
+     // rounding mode.
+     nop.i 0 ;;
+}
+
+
+{ .mfi
+   // bias+0x400 (bias+EMAX+1)
+   (p8) mov r2=0x103ff
+   // S=P*T0+S0
+   (p8) fma.d.s2 f12=f10,f15,f14
+   nop.i 0 ;;
+}
+{ .mfi
+(p8) setf.exp f11 = r2
+(p8) fsetc.s2 0x7F,0x40
+//   Restore Original Mode in S2
+     nop.i 0 ;;
+}
+{ .mfi
+     nop.m 0
+(p8) fcmp.lt.unc.s1 p9, p10 =  f12, f11
+     nop.i 0 ;;
+}
+{ .mib
+     nop.m 0
+     mov GR_Parameter_TAG = 46
+	 // No overflow
+(p9) br.ret.sptk b0;;
+}
+GLOBAL_IEEE754_END(hypot)
+
+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#