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Diffstat (limited to 'sysdeps/ia64/fpu/s_fdim.S')
| -rw-r--r-- | sysdeps/ia64/fpu/s_fdim.S | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/sysdeps/ia64/fpu/s_fdim.S b/sysdeps/ia64/fpu/s_fdim.S deleted file mode 100644 index a6bdf1f5f8..0000000000 --- a/sysdeps/ia64/fpu/s_fdim.S +++ /dev/null @@ -1,227 +0,0 @@ -.file "fdim.s" - - -// Copyright (c) 2001 - 2003, 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 -//============================================================== -// 06/08/01 Initial version -// 08/23/01 Corrected error tag number -// 05/20/02 Cleaned up namespace and sf0 syntax -// 01/28/03 Improved performance -// -// API -//============================================================== -// double fdim( double x, double y ); -// input floating point f8, f9 -// output floating point f8 -// -// -// Overview of operation -//============================================================== -// fdim determines the positive difference between the arguments -// Result = x - y if x > y -// = +0 if x <= y -// -// Error support is called if x-y overflows for x > y -// - -// Registers used -//============================================================== -// General purpose registers: r14, r32 - r39 - -rExpBig = r14 - -// r36-39 parameters for libm_error_support -GR_SAVE_B0 = r33 -GR_SAVE_GP = r34 -GR_SAVE_PFS = r35 - -GR_Parameter_X = r36 -GR_Parameter_Y = r37 -GR_Parameter_RESULT = r38 -GR_Parameter_TAG = r39 - -// Floating-point registers: f8 - f12 - -f_tmp_result = f10 -fBig = f11 -fNormX = f12 - -// Predicate registers: p6 - p10 - - -.section .text -GLOBAL_LIBM_ENTRY(fdim) - -{ .mfi - mov rExpBig = 0x103ff // Exponent to indicate overflow - fcmp.le.s1 p6,p7 = f8, f9 // Is x <= y? - nop.i 0 -} -{ .mfi - nop.m 0 - fnorm.s1 fNormX = f8 // Save x - nop.i 0 -} -;; - -{ .mfi - setf.exp fBig = rExpBig // Constant to test for overflow - fcmp.eq.s0 p8,p0 = f8, f9 // Dummy op to set Denormal or Invalid - nop.i 0 -} -;; - -{ .mfi - nop.m 0 - fclass.m p9,p10 = f8, 0x1e3 // Test for x natval, nan, inf - nop.i 0 -} -;; - -{ .mfi - nop.m 0 -(p6) fmerge.s f8 = f0, f0 // Result is +0 if x <= y - nop.i 0 -} -{ .mfi - nop.m 0 -(p7) fms.d.s0 f8 = f8, f1, f9 // Result is x - y if x > y - nop.i 0 -} -;; - -{ .mfi - nop.m 0 -(p10) fclass.m p9,p10 = f9, 0x1e3 // Test for y natval, nan, inf - nop.i 0 -} -;; - -{ .mfi - nop.m 0 -(p10) fcmp.ge.s1 p8,p0 = f8, fBig // Test result for overflow - nop.i 0 -} -;; - -{ .mbb -(p9) cmp.ne p8,p0 = r0,r0 // Clear p8 if x or y natval,nan,inf -(p8) br.cond.spnt FDIM_OVERFLOW // Branch if result overflows - br.ret.sptk b0 // Normal return -} -;; - - -// Here if result will overflow -FDIM_OVERFLOW: -{ .mfi - alloc r32=ar.pfs,2,2,4,0 - fms.d.s0 f_tmp_result = f8,f1,f9 // Normalize result force overflow - nop.i 0 -} -{ .mfb - mov GR_Parameter_TAG = 196 // Error code - nop.f 0 - br.cond.sptk __libm_error_region // Branch to error code -} -;; - -GLOBAL_LIBM_END(fdim) - - -LOCAL_LIBM_ENTRY(__libm_error_region) -// Call error support to report possible range error -.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] = f9,16 // 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 - stfd [GR_Parameter_X] = fNormX // STORE Parameter 1 on stack - add GR_Parameter_RESULT = 0,GR_Parameter_Y // Parameter 3 address - nop.b 0 -} -{ .mib - stfd [GR_Parameter_Y] = f_tmp_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 - add GR_Parameter_RESULT = 48,sp - nop.m 0 - nop.i 0 -};; - -{ .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# |