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Diffstat (limited to 'sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.S | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.S b/sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.S deleted file mode 100644 index 4403cf3ef0..0000000000 --- a/sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.S +++ /dev/null @@ -1,101 +0,0 @@ -/* sqrtf function. PowerPC32 version. - Copyright (C) 2007-2016 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> -#include <math_ldbl_opt.h> - -/* float [fp1] sqrts (float x [fp1]) - Power4 (ISA V2.0) and above implement sqrt in hardware (not optional). - The fsqrts instruction generates the correct value for all inputs and - sets the appropriate floating point exceptions. Extended checking is - only needed to set errno (via __kernel_standard) if the input value - is negative. - - The fsqrts will set FPCC and FU (Floating Point Unordered or NaN - to indicated that the input value was negative or NaN. Use Move to - Condition Register from FPSCR to copy the FPCC field to cr1. The - branch on summary overflow transfers control to w_sqrt to process - any error conditions. Otherwise we can return the result directly. - - This part of the function is a leaf routine, so no need to stack a - frame or execute prologue/epilogue code. This means it is safe to - transfer directly to w_sqrt as long as the input value (f1) is - preserved. Putting the sqrt result into f2 (float parameter 2) - allows passing both the input value and sqrt result into the extended - wrapper so there is no need to recompute. - - This tactic avoids the overhead of stacking a frame for the normal - (non-error) case. Until gcc supports prologue shrink-wrapping - this is the best we can do. */ - - .section ".text" - .machine power4 -EALIGN (__sqrtf, 5, 0) - fsqrts fp2,fp1 - mcrfs cr1,4 - bso- cr1,.Lw_sqrtf - fmr fp1,fp2 - blr - .align 4 -.Lw_sqrtf: - mflr r0 - stwu r1,-16(r1) - cfi_adjust_cfa_offset(16) - fmr fp12,fp2 - stw r0,20(r1) - stw r30,8(r1) - cfi_offset(lr,20-16) - cfi_offset(r30,8-16) -#ifdef SHARED - SETUP_GOT_ACCESS(r30,got_label) - addis r30,r30,_GLOBAL_OFFSET_TABLE_-got_label@ha - addi r30,r30,_GLOBAL_OFFSET_TABLE_-got_label@l - lwz r9,_LIB_VERSION@got(30) - lwz r0,0(r9) -#else - lis r9,_LIB_VERSION@ha - lwz r0,_LIB_VERSION@l(r9) -#endif -/* if (_LIB_VERSION == _IEEE_) return z; */ - cmpwi cr7,r0,-1 - beq- cr7,.L4 -/* if (x != x, 0) return z; !isnan */ - fcmpu cr7,fp1,fp1 - bne- cr7,.L4 -/* if (x < 0.0) - return __kernel_standard (x, x, 126) */ - fmr fp2,fp1 - fabs fp0,fp1 - li r3,126 - fcmpu cr7,1,0 - bne- cr7,.L11 -.L4: - lwz r0,20(r1) - fmr fp1,fp12 - lwz r30,8(r1) - addi r1,r1,16 - mtlr r0 - blr -.L11: - bl __kernel_standard@plt - fmr fp12,fp1 - b .L4 - END (__sqrtf) - -weak_alias (__sqrtf, sqrtf) - |