From d75a0a62b12c35ee85f786d5f8d155ab39909411 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sat, 7 Jan 2012 11:19:05 -0500 Subject: Remove IA-64 support --- sysdeps/ia64/fpu/s_nexttoward.S | 490 ---------------------------------------- 1 file changed, 490 deletions(-) delete mode 100644 sysdeps/ia64/fpu/s_nexttoward.S (limited to 'sysdeps/ia64/fpu/s_nexttoward.S') diff --git a/sysdeps/ia64/fpu/s_nexttoward.S b/sysdeps/ia64/fpu/s_nexttoward.S deleted file mode 100644 index 741fea02b0..0000000000 --- a/sysdeps/ia64/fpu/s_nexttoward.S +++ /dev/null @@ -1,490 +0,0 @@ -.file "nexttoward.s" - - -// Copyright (c) 2001 - 2004, Intel Corporation -// All rights reserved. -// -// Contributed 2001 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 -//============================================================== -// 08/15/01 Initial version -// 08/23/01 Corrected error tag number -// 05/20/02 Cleaned up namespace and sf0 syntax -// 02/10/03 Reordered header: .section, .global, .proc, .align -// 12/14/04 Added error handling on underflow. -// -// API -//============================================================== -// double nexttoward( double x, long double y ); -// input floating point f8, f9 -// output floating point f8 -// -// Registers used -//============================================================== -GR_max_pexp = r14 -GR_min_pexp = r15 -GR_exp = r16 -GR_sig = r17 -GR_lnorm_sig = r18 -GR_sign_mask = r19 -GR_exp_mask = r20 -GR_sden_sig = r21 -GR_new_sig = r22 -GR_new_exp = r23 -GR_lden_sig = r24 -GR_snorm_sig = r25 -GR_exp1 = r26 -GR_x_exp = r27 -GR_min_den_rexp = r28 -// r36-39 parameters for libm_error_support - -GR_SAVE_B0 = r34 -GR_SAVE_GP = r35 -GR_SAVE_PFS = r32 - -GR_Parameter_X = r36 -GR_Parameter_Y = r37 -GR_Parameter_RESULT = r38 -GR_Parameter_TAG = r39 - -FR_lnorm_sig = f10 -FR_lnorm_exp = f11 -FR_lnorm = f12 -FR_sden_sig = f13 -FR_sden_exp = f14 -FR_sden = f15 -FR_save_f8 = f33 -FR_new_exp = f34 -FR_new_sig = f35 -FR_lden_sig = f36 -FR_snorm_sig = f37 -FR_exp1 = f38 -FR_tmp = f39 - -// -// Overview of operation -//============================================================== -// nexttoward determines the next representable value -// after x in the direction of y. - - -.section .text -GLOBAL_LIBM_ENTRY(nexttoward) - -// Extract signexp from x -// Is x < y ? p10 if yes, p11 if no -// Form smallest denormal significand = ulp size -{ .mfi - getf.exp GR_exp = f8 - fcmp.lt.s1 p10,p11 = f8, f9 - addl GR_sden_sig = 0x800, r0 -} -// Form largest normal significand 0xfffffffffffff800 -// Form smallest normal exponent -{ .mfi - addl GR_lnorm_sig = -0x800,r0 - nop.f 999 - addl GR_min_pexp = 0x0fc01, r0 ;; -} -// Extract significand from x -// Is x=y? -// Form largest normal exponent -{ .mfi - getf.sig GR_sig = f8 - fcmp.eq.s0 p6,p0 = f8, f9 - addl GR_max_pexp = 0x103fe, r0 -} -// Move largest normal significand to fp reg for special cases -{ .mfi - setf.sig FR_lnorm_sig = GR_lnorm_sig - nop.f 999 - addl GR_sign_mask = 0x20000, r0 ;; -} - -// Move smallest denormal significand and signexp to fp regs -// Is x=nan? -// Set p12 and p13 based on whether significand increases or decreases -// It increases (p12 set) if x=0 or if x>y and x<0 -// It decreases (p13 set) if xy and x>=0 -{ .mfi - setf.sig FR_sden_sig = GR_sden_sig - fclass.m p8,p0 = f8, 0xc3 -(p10) cmp.lt p12,p13 = GR_exp, GR_sign_mask -} -{ .mfi - setf.exp FR_sden_exp = GR_min_pexp -(p11) cmp.ge p12,p13 = GR_exp, GR_sign_mask ;; -} - -.pred.rel "mutex",p12,p13 - -// Form expected new significand, adding or subtracting 1 ulp increment -// If x=y set result to y -// Form smallest normal significand and largest denormal significand -{ .mfi -(p12) add GR_new_sig = GR_sig, GR_sden_sig -(p6) fnorm.d.s0 f8=f9 //Normalise - dep.z GR_snorm_sig = 1,63,1 // 0x8000000000000000 -} -{ .mlx -(p13) sub GR_new_sig = GR_sig, GR_sden_sig - movl GR_lden_sig = 0x7ffffffffffff800 ;; -} - -// Move expected result significand and signexp to fp regs -// Is y=nan? -// Form new exponent in case result exponent needs incrementing or decrementing -{ .mfi - setf.exp FR_new_exp = GR_exp - fclass.m p9,p0 = f9, 0xc3 -(p12) add GR_exp1 = 1, GR_exp -} -{ .mib - setf.sig FR_new_sig = GR_new_sig -(p13) add GR_exp1 = -1, GR_exp -(p6) br.ret.spnt b0 ;; // Exit if x=y -} - -// Move largest normal signexp to fp reg for special cases -// Is x=zero? -{ .mfi - setf.exp FR_lnorm_exp = GR_max_pexp - fclass.m p7,p0 = f8, 0x7 - nop.i 999 -} -{ .mfb - nop.m 999 -(p8) fma.s0 f8 = f8,f1,f9 -(p8) br.ret.spnt b0 ;; // Exit if x=nan -} - -// Move exp+-1 and smallest normal significand to fp regs for special cases -// Is x=inf? -{ .mfi - setf.exp FR_exp1 = GR_exp1 - fclass.m p6,p0 = f8, 0x23 - addl GR_exp_mask = 0x1ffff, r0 -} -{ .mfb - setf.sig FR_snorm_sig = GR_snorm_sig -(p9) fma.s0 f8 = f8,f1,f9 -(p9) br.ret.spnt b0 ;; // Exit if y=nan -} - -// Move largest denormal significand to fp regs for special cases -// Save x -{ .mfb - setf.sig FR_lden_sig = GR_lden_sig - mov FR_save_f8 = f8 -(p7) br.cond.spnt NEXT_ZERO ;; // Exit if x=0 -} - -// Mask off the sign to get x_exp -{ .mfb - and GR_x_exp = GR_exp_mask, GR_exp - nop.f 999 -(p6) br.cond.spnt NEXT_INF ;; // Exit if x=inf -} - -// Check 6 special cases when significand rolls over: -// 1 sig size incr, x_sig=max_sig, x_exp < max_exp -// Set p6, result is sig=min_sig, exp++ -// 2 sig size incr, x_sig=max_sig, x_exp >= max_exp -// Set p7, result is inf, signal overflow -// 3 sig size decr, x_sig=min_sig, x_exp > min_exp -// Set p8, result is sig=max_sig, exp-- -// 4 sig size decr, x_sig=min_sig, x_exp = min_exp -// Set p9, result is sig=max_den_sig, exp same, signal underflow and inexact -// 5 sig size decr, x_sig=min_den_sig, x_exp = min_exp -// Set p10, result is zero, sign of x, signal underflow and inexact -// 6 sig size decr, x_sig=min_sig, x_exp < min_exp -// Set p14, result is zero, sign of x, signal underflow and inexact -// -// Form exponent of smallest double denormal (if normalized register format) -{ .mmi - adds GR_min_den_rexp = -52, GR_min_pexp -(p12) cmp.eq.unc p6,p0 = GR_new_sig, r0 -(p13) cmp.eq.unc p8,p10 = GR_new_sig, GR_lden_sig ;; -} - -{ .mmi -(p6) cmp.lt.unc p6,p7 = GR_x_exp, GR_max_pexp -(p8) cmp.gt.unc p8,p9 = GR_x_exp, GR_min_pexp -(p10) cmp.eq.unc p10,p0 = GR_new_sig, r0 ;; -} - -// Create small normal in case need to generate underflow flag -{ .mfi -(p10) cmp.le.unc p10,p0 = GR_x_exp, GR_min_pexp - fmerge.se FR_tmp = FR_sden_exp, FR_lnorm_sig -(p9) cmp.gt.unc p9,p14 = GR_x_exp, GR_min_den_rexp -} -// Branch if cases 1, 2, 3 -{ .bbb -(p6) br.cond.spnt NEXT_EXPUP -(p7) br.cond.spnt NEXT_OVERFLOW -(p8) br.cond.spnt NEXT_EXPDOWN ;; -} - -// Branch if cases 4, 5, 6 -{ .bbb -(p9) br.cond.spnt NEXT_NORM_TO_DENORM -(p10) br.cond.spnt NEXT_UNDERFLOW_TO_ZERO -(p14) br.cond.spnt NEXT_UNDERFLOW_TO_ZERO ;; -} - -// Here if no special cases -// Set p6 if result will be a denormal, so can force underflow flag -// Case 1: x_exp=min_exp, x_sig=unnormalized -// Case 2: x_exp