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Diffstat (limited to 'sysdeps/ia64/fpu/e_sqrtf.S')
| -rw-r--r-- | sysdeps/ia64/fpu/e_sqrtf.S | 260 |
1 files changed, 0 insertions, 260 deletions
diff --git a/sysdeps/ia64/fpu/e_sqrtf.S b/sysdeps/ia64/fpu/e_sqrtf.S deleted file mode 100644 index daa20454d7..0000000000 --- a/sysdeps/ia64/fpu/e_sqrtf.S +++ /dev/null @@ -1,260 +0,0 @@ -.file "sqrtf.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 -// 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. -// 05/20/02 Cleaned up namespace and sf0 syntax -// 02/10/03 Reordered header: .section, .global, .proc, .align -// -//********************************************************************* -// -// Function: Combined sqrtf(x), where -// _ -// sqrtf(x) = |x, for single precision x values -// -//******************************************************************** -// -// Accuracy: Correctly Rounded -// -//******************************************************************** -// -// Resources Used: -// -// Floating-Point Registers: f8 (Input and Return Value) -// f7 -f14 -// -// General Purpose Registers: -// r32-r36 (Locals) -// r37-r40 (Used to pass arguments to error handling routine) -// -// Predicate Registers: p6, p7, p8 -// -//******************************************************************** -// -// IEEE Special Conditions: -// -// All faults and exceptions should be raised correctly. -// sqrtf(QNaN) = QNaN -// sqrtf(SNaN) = QNaN -// sqrtf(+/-0) = +/-0 -// sqrtf(negative) = QNaN and error handling is called -// -//******************************************************************** -// -// Implementation: -// -// Modified Newton-Raphson Algorithm -// -//******************************************************************** - - -GR_SAVE_B0 = r34 -GR_SAVE_PFS = r33 -GR_SAVE_GP = r35 - -GR_Parameter_X = r37 -GR_Parameter_Y = r38 -GR_Parameter_RESULT = r39 -GR_Parameter_TAG = r40 - -FR_X = f13 -FR_Y = f0 -FR_RESULT = f8 - - -.section .text -GLOBAL_IEEE754_ENTRY(sqrtf) -{ .mlx - // BEGIN SINGLE PRECISION MINIMUM LATENCY SQUARE ROOT ALGORITHM - alloc r32= ar.pfs,0,5,4,0 - // exponent of +1/2 in r2 - movl r2 = 0x0fffe -} { .mfi - // +1/2 in f12 - nop.m 0 - frsqrta.s0 f7,p6=f8 - nop.i 0;; -} { .mfi - setf.exp f12 = r2 - // Step (1) - // y0 = 1/sqrt(a) in f7 - fclass.m.unc p7,p8 = f8,0x3A - nop.i 0 -} { .mfi - nop.m 0 - // Make a copy of x just in case - mov f13 = f8 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (2) - // H0 = 1/2 * y0 in f9 - (p6) fma.s1 f9=f12,f7,f0 - nop.i 0 -} { .mfi - nop.m 0 - // Step (3) - // S0 = a * y0 in f7 - (p6) fma.s1 f7=f8,f7,f0 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (4) - // d = 1/2 - S0 * H0 in f10 - (p6) fnma.s1 f10=f7,f9,f12 - nop.i 0 -} { .mfi - nop.m 0 - // Step (0'') - // 3/2 = 1 + 1/2 in f12 - (p6) fma.s1 f12=f12,f1,f1 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (5) - // e = 1 + 3/2 * d in f12 - (p6) fma.s1 f12=f12,f10,f1 - nop.i 0 -} { .mfi - nop.m 0 - // Step (6) - // T0 = d * S0 in f11 - (p6) fma.s1 f11=f10,f7,f0 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (7) - // G0 = d * H0 in f10 - (p6) fma.s1 f10=f10,f9,f0 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (8) - // S1 = S0 + e * T0 in f7 - (p6) fma.s.s1 f7=f12,f11,f7 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (9) - // H1 = H0 + e * G0 in f12 - (p6) fma.s1 f12=f12,f10,f9 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (10) - // d1 = a - S1 * S1 in f9 - (p6) fnma.s1 f9=f7,f7,f8 - nop.i 0;; -} { .mfb - nop.m 0 - // Step (11) - // S = S1 + d1 * H1 in f7 - (p6) fma.s.s0 f8=f9,f12,f7 - (p6) br.ret.sptk b0 ;; -// END SINGLE PRECISION MINIMUM LATENCY SQUARE ROOT ALGORITHM -} { .mfb - nop.m 0 - mov f8 = f7 - (p8) br.ret.sptk b0 ;; -} -// -// This branch includes all those special values that are not negative, -// with the result equal to frcpa(x) -// -GLOBAL_IEEE754_END(sqrtf) - - -LOCAL_LIBM_ENTRY(__libm_error_region) -.prologue -{ .mii - add GR_Parameter_Y=-32,sp // Parameter 2 value - mov GR_Parameter_TAG = 50 -.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 - stfs [GR_Parameter_Y] = FR_Y,16 // Store 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 - stfs [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 - stfs [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 - ldfs 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# |