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* Remove residual blank line at start of MakefileWarner Losh2024-07-151-1/+0
| | | | | | | This is a residual of the $FreeBSD$ removal. MFC After: 3 days (though I'll just run the command on the branches) Sponsored by: Netflix
* libc: Purge unneeded cdefs.hWarner Losh2023-11-015-5/+0
| | | | | | | | | These sys/cdefs.h are not needed. Purge them. They are mostly left-over from the $FreeBSD$ removal. A few in libc are still required for macros that cdefs.h defines. Keep those. Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D42385
* Remove $FreeBSD$: one-line sh patternWarner Losh2023-08-161-1/+0
| | | | Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/
* Remove $FreeBSD$: one-line .c patternWarner Losh2023-08-169-18/+0
| | | | Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
* Remove $FreeBSD$: one-line .c comment patternWarner Losh2023-08-164-4/+0
| | | | Remove /^/[*/]\s*\$FreeBSD\$.*\n/
* Remove $FreeBSD$: two-line .h patternWarner Losh2023-08-162-4/+0
| | | | Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
* [PowerPC64] Port optimized strcpy to PPC64LELeandro Lupori2021-03-252-9/+64
| | | | | | | | Submitted by: Bruno Larsen <bruno.larsen@eldorado.org.br> Reviewed by: luporl, bdragon (IRC) MFC after: 1 week Sponsored by: Eldorado Research Institute (eldorado.org.br) Differential Revision: https://reviews.freebsd.org/D29067
* [PowerPC64] Enforce natural alignment in bcopyLeandro Lupori2021-03-251-0/+34
| | | | | | | | | | | | | | POWER architecture CPUs (Book-S) require natural alignment for cache-inhibited storage accesses. Since we can't know the caching model for a page ahead of time, always enforce natural alignment in bcopy. This fixes a SIGBUS when calling the function with misaligned pointers on POWER7. Submitted by: Bruno Larsen <bruno.larsen@eldorado.org.br> Reviewed by: luporl, bdragon (IRC) MFC after: 1 week Sponsored by: Eldorado Research Institute (eldorado.org.br) Differential Revision: https://reviews.freebsd.org/D28776
* [PowerPC64LE] Use a shared LIBC_ARCH for powerpc64le.Brandon Bergren2020-09-231-3/+8
| | | | | | | | | | | | | | | Given that we have converted to ELFv2 for BE already, endianness is the only difference between the two ARCHs. As such, there is no need to differentiate LIBC_ARCH between the two. Combining them like this lets us avoid needing to have two copies of several bits for no good reason. Sponsored by: Tag1 Consulting, Inc. Notes: svn path=/head/; revision=366039
* Fix r358688 -- Remember to actually save r3 before processing.Brandon Bergren2020-03-111-1/+1
| | | | | | | | | | | | Crash was noticed by pkubaj building gcc9. Apparently non dword-aligned char pointers are somewhat rare in the wild. Reported by: pkubaj Sponsored by: Tag1 Consulting, Inc. Notes: svn path=/head/; revision=358902
* powerpc/memcpy: Don't predict the src and dst will be misalignedJustin Hibbits2020-03-061-1/+1
| | | | | | | | Predicting misalignment will pessimize the expected common case. Don't predict true or false in thise case. Notes: svn path=/head/; revision=358691
* Finish revert of r358672, missed in r358688.Justin Hibbits2020-03-061-1/+1
| | | | | | | | | Manual reverts never succeed correctly. Reported by: luporl Notes: svn path=/head/; revision=358690
* powerpc/powerpc64: Enforce natural alignment in memcpyJustin Hibbits2020-03-063-1/+13
| | | | | | | | | | | | | | | | | | Summary: POWER architecture CPUs (Book-S) require natural alignment for cache-inhibited storage accesses. Since we can't know the caching model for a page ahead of time, always enforce natural alignment in memcpy. This fixes a SIGBUS in X with acceleration enabled on POWER9. As part of this, revert r358672, it's no longer necessary with this fix. Regression tested by alfredo. Reviewed by: alfredo Differential Revision: https://reviews.freebsd.org/D23969 Notes: svn path=/head/; revision=358688
* [PowerPC64] restrict memcpy/bcopy optimization to POWER ISA >=V2.07Alfredo Dal'Ava Junior2020-03-051-1/+6
| | | | | | | | | | | | | | | | | | | | VSX instructions were added in POWER ISA V2.06 (POWER7), but it requires data to be word-aligned. Such requirement was removed in ISA V2.07B (POWER8). Since current memcpy/bcopy optimization relies on VSX instructions handling misalignment transparently, and kernel doesn't currently implement an alignment error handler, this optimzation should be restrict to ISA V2.07 onwards. SIGBUS on stxvd2x instruction was reproduced in POWER7+ CPU. Reviewed by: luporl, jhibbits, bdragon Approved by: jhibbits (mentor) Differential Revision: https://reviews.freebsd.org/D23958 Notes: svn path=/head/; revision=358672
* [PPC64] memcpy/memmove/bcopy optimizationLeandro Lupori2020-01-1510-0/+648
| | | | | | | | | | | | | | | | | | | | For copies shorter than 512 bytes, the data is copied using plain ld/std instructions. For 512 bytes or more, the copy is done in 3 phases: Phase 1: copy from the src buffer until it's aligned at a 16-byte boundary Phase 2: copy as many aligned 64-byte blocks from the src buffer as possible Phase 3: copy the remaining data, if any In phase 2, this code uses VSX instructions when available. Otherwise, it uses ldx/stdx. Submitted by: Luis Pires <lffpires_ruabrasil.org> (original version) Reviewed by: jhibbits Differential Revision: https://reviews.freebsd.org/D15118 Notes: svn path=/head/; revision=356767
* [PPC64] strncpy optimizationLeandro Lupori2020-01-154-1/+216
| | | | | | | | | | | | Assembly optimization of strncpy for PowerPC64, using double words instead of bytes to copy strings. Submitted by: Leonardo Bianconi <leonardo.bianconi_eldorado.org.br> (original version) Reviewed by: jhibbits Differential Revision: https://reviews.freebsd.org/D15369 Notes: svn path=/head/; revision=356766
* [PPC64] strcpy optimizationLeandro Lupori2020-01-154-0/+230
| | | | | | | | | | | | Assembly optimization of strcpy for PowerPC64, using double words instead of bytes to copy strings. Submitted by: Leonardo Bianconi <leonardo.bianconi_eldorado.org.br> (original version) Reviewed by: jhibbits Differential Revision: https://reviews.freebsd.org/D15368 Notes: svn path=/head/; revision=356765
* revert r346588 for nowJustin Hibbits2019-05-112-211/+0
| | | | | | | | | | | The rewrite of strcmp in assembly uses an instruction added in PowerISA 2.05, making it SIGILL on CPUs older than the POWER6, such as the PPC970 in the PowerMac G5. Revert this until we get clang+lld, or retire the in-tree binutils in favor of newer binutils with IFUNC support, whichever comes first. Notes: svn path=/head/; revision=347492
* powerpc64: Rewrite strcmp in asm to take advantage of word sizeJustin Hibbits2019-04-232-0/+211
Summary: Optimize strcmp for powerpc64. Data is loaded by double words and cmpb intruction is used to find '\0'. Some performance gain rates between the current and the optimized solution: String size (bytes) Gain rate <=8 0.59% <=16 1.92% 32 3.02% 64 5.60% 128 10.16% 256 18.05% 512 30.18% 1024 42.82% Submitted by: alexandre.yamashita_eldorado.org.br, leonardo.bianconi_eldorado.org.br Differential Revision: https://reviews.freebsd.org/D15220 Notes: svn path=/head/; revision=346588
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