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author | Joseph Myers <joseph@codesourcery.com> | 2017-08-21 17:46:34 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2017-08-21 17:46:34 +0000 |
commit | 831bbd55271eacc0190a13954bd347f0a521b096 (patch) | |
tree | a46d925f2fca35cd930d73c6d0890ee005ba17fb /sysdeps | |
parent | 813378e9fe17e029caf627cab76fe23eb46815fa (diff) | |
download | glibc-831bbd55271eacc0190a13954bd347f0a521b096.tar.gz glibc-831bbd55271eacc0190a13954bd347f0a521b096.tar.xz glibc-831bbd55271eacc0190a13954bd347f0a521b096.zip |
Remove SPARC sqrt wrappers (bug 21973).
This patch removes the SPARC-specific wrappers for sqrt and sqrtf. These wrappers, by adding architecture-specific uses of _LIB_VERSION and __kernel_standard, unnecessarily complicate cleanups of libm error handling. They also do not serve a useful optimization purpose. GCC knows about sqrt as a built-in function, and can generate direct calls to a hardware square root instruction, either on its own, in the -fno-math-errno case, or together with an inline check for the argument being negative and a call to the out-of-line sqrt function for error handling only in that case (and has been able to do so for a long time). Thus in practice the wrapper will only be called only in the case of negative arguments, which is not a case it is useful to optimize for. The removal of the wrappers also uncovers, and fixes, an old bug. 32-bit SPARC libm used (checked with glibc 2.8 binaries) to have a sqrtl compat symbol, version GLIBC_2.0, for old binaries when sqrtl was an alias of sqrt (I don't have pre-glibc-2.4 binaries for SPARC to hand to check for the sqrtl symbol in those). This disappeared, probably with: commit 8847f0377003fbfe9cbe951ce9f8717d74f26247 Author: David S. Miller <davem@davemloft.net> Date: Tue Feb 28 22:37:58 2012 -0800 Add sparc optimized sqrt{,f}. Removing the wrappers brings back the generic ldbl-opt logic for creating such compat symbols, and so restores the compat symbol that should be there. This could of course also be fixed in the wrappers - but as noted above, the wrappers are optimizing a case it's not useful to optimize, so the bug of the missing compat symbol serves to illustrate the risks involved with the extra complexity of architecture-specific function versions where not needed. Tested with build-many-glibcs.py. [BZ #21973] * sysdeps/sparc/sparc32/fpu/w_sqrt_compat.S: Remove file. * sysdeps/sparc/sparc32/fpu/w_sqrtf_compat.S: Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat-vis3.S: Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat.S: Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat-vis3.S: Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat.S: Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrt_compat.S : Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrtf_compat.S: Likewise. * sysdeps/sparc/sparc64/fpu/w_sqrt_compat.S: Likewise. * sysdeps/sparc/sparc64/fpu/w_sqrtf_compat.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Add GLIBC_2.0 sqrtl symbol.
Diffstat (limited to 'sysdeps')
12 files changed, 1 insertions, 430 deletions
diff --git a/sysdeps/sparc/sparc32/fpu/w_sqrt_compat.S b/sysdeps/sparc/sparc32/fpu/w_sqrt_compat.S deleted file mode 100644 index cca76541e4..0000000000 --- a/sysdeps/sparc/sparc32/fpu/w_sqrt_compat.S +++ /dev/null @@ -1,54 +0,0 @@ -/* sqrt function. sparc32 version. - Copyright (C) 2012-2017 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-svid-compat.h> - -ENTRY (__sqrt) - clr %g1 - std %g0, [%sp + 72] - std %o0, [%sp + 80] - ldd [%sp + 72], %f8 - ldd [%sp + 80], %f0 - fcmpd %f0, %f8 - fbl 1f - nop -8: retl - fsqrtd %f0, %f0 -1: -#ifdef SHARED - SETUP_PIC_REG_LEAF(o5, g1) - sethi %gdop_hix22(_LIB_VERSION), %g1 - xor %g1, %gdop_lox10(_LIB_VERSION), %g1 - ld [%o5 + %g1], %g1, %gdop(_LIB_VERSION) -#else - sethi %hi(_LIB_VERSION), %g1 - or %g1, %lo(_LIB_VERSION), %g1 -#endif - ld [%g1], %g1 - cmp %g1, -1 - be 8b - mov %o0, %o2 - mov %o1, %o3 - mov 26, %o4 - mov %o7, %g1 - call __kernel_standard - mov %g1, %o7 -END (__sqrt) - -weak_alias (__sqrt, sqrt) diff --git a/sysdeps/sparc/sparc32/fpu/w_sqrtf_compat.S b/sysdeps/sparc/sparc32/fpu/w_sqrtf_compat.S deleted file mode 100644 index 34f6113a0b..0000000000 --- a/sysdeps/sparc/sparc32/fpu/w_sqrtf_compat.S +++ /dev/null @@ -1,52 +0,0 @@ -/* sqrtf function. sparc32 version. - Copyright (C) 2012-2017 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-svid-compat.h> - -ENTRY (__sqrtf) - st %g0, [%sp + 68] - st %o0, [%sp + 72] - ld [%sp + 68], %f8 - ld [%sp + 72], %f0 - fcmps %f0, %f8 - fbl 1f - nop -8: retl - fsqrts %f0, %f0 -1: -#ifdef SHARED - SETUP_PIC_REG_LEAF(o5, g1) - sethi %gdop_hix22(_LIB_VERSION), %g1 - xor %g1, %gdop_lox10(_LIB_VERSION), %g1 - ld [%o5 + %g1], %g1, %gdop(_LIB_VERSION) -#else - sethi %hi(_LIB_VERSION), %g1 - or %g1, %lo(_LIB_VERSION), %g1 -#endif - ld [%g1], %g1 - cmp %g1, -1 - be 8b - mov %o0, %o1 - mov 126, %o2 - mov %o7, %g1 - call __kernel_standard_f - mov %g1, %o7 -END (__sqrtf) - -weak_alias (__sqrtf, sqrtf) diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile index 322e300097..2a2d3745ed 100644 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile @@ -3,7 +3,6 @@ ifeq ($(have-as-vis3),yes) libm-sysdep_routines += m_copysignf-vis3 m_copysign-vis3 s_fabs-vis3 \ s_fabsf-vis3 s_llrintf-vis3 s_llrint-vis3 \ s_rintf-vis3 s_rint-vis3 \ - w_sqrt_compat-vis3 w_sqrtf_compat-vis3 \ s_fmaf-vis3 s_fma-vis3 s_nearbyint-vis3 \ s_nearbyintf-vis3 s_fdimf-vis3 s_fdim-vis3 sysdep_routines += s_copysignf-vis3 s_copysign-vis3 diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat-vis3.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat-vis3.S deleted file mode 100644 index a3a642fba6..0000000000 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat-vis3.S +++ /dev/null @@ -1,50 +0,0 @@ -/* sqrt function. sparc32 v9 vis3 version. - Copyright (C) 2012-2017 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-svid-compat.h> - -ENTRY (__sqrt_vis3) - movwtos %o0, %f0 - fzero %f8 - movwtos %o1, %f1 - fcmpd %f0, %f8 - fbl 1f - nop -8: retl - fsqrtd %f0, %f0 -1: -#ifdef SHARED - SETUP_PIC_REG_LEAF(o5, g1) - sethi %gdop_hix22(_LIB_VERSION), %g1 - xor %g1, %gdop_lox10(_LIB_VERSION), %g1 - ld [%o5 + %g1], %g1, %gdop(_LIB_VERSION) -#else - sethi %hi(_LIB_VERSION), %g1 - or %g1, %lo(_LIB_VERSION), %g1 -#endif - ld [%g1], %g1 - cmp %g1, -1 - be 8b - mov %o0, %o2 - mov %o1, %o3 - mov 26, %o4 - mov %o7, %g1 - call __kernel_standard - mov %g1, %o7 -END (__sqrt_vis3) diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat.S deleted file mode 100644 index 1ccac19e29..0000000000 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat.S +++ /dev/null @@ -1,12 +0,0 @@ -#include <sparc-ifunc.h> - -SPARC_ASM_VIS3_IFUNC(sqrt) - -weak_alias (__sqrt, sqrt) - -# undef weak_alias -# define weak_alias(a, b) - -#define __sqrt __sqrt_generic - -#include "../w_sqrt_compat.S" diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat-vis3.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat-vis3.S deleted file mode 100644 index 8cd160765a..0000000000 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat-vis3.S +++ /dev/null @@ -1,48 +0,0 @@ -/* sqrtf function. sparc32 v9 vis3 version. - Copyright (C) 2012-2017 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-svid-compat.h> - -ENTRY (__sqrtf_vis3) - movwtos %o0, %f0 - fzeros %f8 - fcmps %f0, %f8 - fbl 1f - nop -8: retl - fsqrts %f0, %f0 -1: -#ifdef SHARED - SETUP_PIC_REG_LEAF(o5, g1) - sethi %gdop_hix22(_LIB_VERSION), %g1 - xor %g1, %gdop_lox10(_LIB_VERSION), %g1 - ld [%o5 + %g1], %g1, %gdop(_LIB_VERSION) -#else - sethi %hi(_LIB_VERSION), %g1 - or %g1, %lo(_LIB_VERSION), %g1 -#endif - ld [%g1], %g1 - cmp %g1, -1 - be 8b - mov %o0, %o1 - mov 126, %o2 - mov %o7, %g1 - call __kernel_standard_f - mov %g1, %o7 -END (__sqrtf_vis3) diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat.S deleted file mode 100644 index f0e759a2c8..0000000000 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat.S +++ /dev/null @@ -1,12 +0,0 @@ -#include <sparc-ifunc.h> - -SPARC_ASM_VIS3_IFUNC(sqrtf) - -weak_alias (__sqrtf, sqrtf) - -# undef weak_alias -# define weak_alias(a, b) - -#define __sqrtf __sqrtf_generic - -#include "../w_sqrtf_compat.S" diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrt_compat.S b/sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrt_compat.S deleted file mode 100644 index f3003da14f..0000000000 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrt_compat.S +++ /dev/null @@ -1,52 +0,0 @@ -/* sqrt function. sparc32 v9 version. - Copyright (C) 2012-2017 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-svid-compat.h> - -ENTRY (__sqrt) - std %o0, [%sp + 80] - fzero %f8 - ldd [%sp + 80], %f0 - fcmpd %f0, %f8 - fbl 1f - nop -8: retl - fsqrtd %f0, %f0 -1: -#ifdef SHARED - SETUP_PIC_REG_LEAF(o5, g1) - sethi %gdop_hix22(_LIB_VERSION), %g1 - xor %g1, %gdop_lox10(_LIB_VERSION), %g1 - ld [%o5 + %g1], %g1, %gdop(_LIB_VERSION) -#else - sethi %hi(_LIB_VERSION), %g1 - or %g1, %lo(_LIB_VERSION), %g1 -#endif - ld [%g1], %g1 - cmp %g1, -1 - be 8b - mov %o0, %o2 - mov %o1, %o3 - mov 26, %o4 - mov %o7, %g1 - call __kernel_standard - mov %g1, %o7 -END (__sqrt) - -weak_alias (__sqrt, sqrt) diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrtf_compat.S b/sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrtf_compat.S deleted file mode 100644 index 7a102de3dd..0000000000 --- a/sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrtf_compat.S +++ /dev/null @@ -1,51 +0,0 @@ -/* sqrtf function. sparc32 v9 version. - Copyright (C) 2012-2017 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-svid-compat.h> - -ENTRY (__sqrtf) - st %o0, [%sp + 72] - fzeros %f8 - ld [%sp + 72], %f0 - fcmps %f0, %f8 - fbl 1f - nop -8: retl - fsqrts %f0, %f0 -1: -#ifdef SHARED - SETUP_PIC_REG_LEAF(o5, g1) - sethi %gdop_hix22(_LIB_VERSION), %g1 - xor %g1, %gdop_lox10(_LIB_VERSION), %g1 - ld [%o5 + %g1], %g1, %gdop(_LIB_VERSION) -#else - sethi %hi(_LIB_VERSION), %g1 - or %g1, %lo(_LIB_VERSION), %g1 -#endif - ld [%g1], %g1 - cmp %g1, -1 - be 8b - mov %o0, %o1 - mov 126, %o2 - mov %o7, %g1 - call __kernel_standard_f - mov %g1, %o7 -END (__sqrtf) - -weak_alias (__sqrtf, sqrtf) diff --git a/sysdeps/sparc/sparc64/fpu/w_sqrt_compat.S b/sysdeps/sparc/sparc64/fpu/w_sqrt_compat.S deleted file mode 100644 index 937e15009e..0000000000 --- a/sysdeps/sparc/sparc64/fpu/w_sqrt_compat.S +++ /dev/null @@ -1,49 +0,0 @@ -/* sqrt function. sparc64 version. - Copyright (C) 2012-2017 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-svid-compat.h> - -ENTRY (__sqrt) - fzero %f8 - fcmpd %fcc2, %f0, %f8 - fbl,pn %fcc2, 1f - nop -8: retl - fsqrtd %f0, %f0 -1: -#ifdef SHARED - SETUP_PIC_REG_LEAF(o5, g1) - sethi %gdop_hix22(_LIB_VERSION), %g1 - xor %g1, %gdop_lox10(_LIB_VERSION), %g1 - ldx [%o5 + %g1], %g1, %gdop(_LIB_VERSION) -#else - sethi %hi(_LIB_VERSION), %g1 - or %g1, %lo(_LIB_VERSION), %g1 -#endif - ld [%g1], %g1 - cmp %g1, -1 - be,pt %icc, 8b - fmovd %f0, %f2 - mov 26, %o2 - mov %o7, %g1 - call __kernel_standard - mov %g1, %o7 -END (__sqrt) - -weak_alias (__sqrt, sqrt) diff --git a/sysdeps/sparc/sparc64/fpu/w_sqrtf_compat.S b/sysdeps/sparc/sparc64/fpu/w_sqrtf_compat.S deleted file mode 100644 index 875ed3b3b2..0000000000 --- a/sysdeps/sparc/sparc64/fpu/w_sqrtf_compat.S +++ /dev/null @@ -1,49 +0,0 @@ -/* sqrtf function. sparc64 version. - Copyright (C) 2012-2017 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-svid-compat.h> - -ENTRY (__sqrtf) - fzeros %f8 - fcmps %fcc2, %f1, %f8 - fbl,pn %fcc2, 1f - nop -8: retl - fsqrts %f1, %f0 -1: -#ifdef SHARED - SETUP_PIC_REG_LEAF(o5, g1) - sethi %gdop_hix22(_LIB_VERSION), %g1 - xor %g1, %gdop_lox10(_LIB_VERSION), %g1 - ldx [%o5 + %g1], %g1, %gdop(_LIB_VERSION) -#else - sethi %hi(_LIB_VERSION), %g1 - or %g1, %lo(_LIB_VERSION), %g1 -#endif - ld [%g1], %g1 - cmp %g1, -1 - be,pt %icc, 8b - fmovs %f1, %f3 - mov 126, %o2 - mov %o7, %g1 - call __kernel_standard_f - mov %g1, %o7 -END (__sqrtf) - -weak_alias (__sqrtf, sqrtf) diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist index f73af6f224..61042ba147 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist @@ -137,6 +137,7 @@ GLIBC_2.0 sinhl F GLIBC_2.0 sinl F GLIBC_2.0 sqrt F GLIBC_2.0 sqrtf F +GLIBC_2.0 sqrtl F GLIBC_2.0 tan F GLIBC_2.0 tanf F GLIBC_2.0 tanh F |