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Revision tags: release/12.2.0, release/11.4.0, release/12.1.0, release/11.3.0, release/12.0.0 |
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5bbde333 |
| 27-Sep-2018 |
Mateusz Guzik <[email protected]> |
amd64: reimplement libc memcmp and bcmp with kernel memcmp
Both are significantly slower than hand-coded loops. See r338963 for
kernel commit.
bcmp differs from memcmp by always returning 1 when a
amd64: reimplement libc memcmp and bcmp with kernel memcmp
Both are significantly slower than hand-coded loops. See r338963 for
kernel commit.
bcmp differs from memcmp by always returning 1 when a difference is
found, as opposed to going for a value bigger or lower than 0
depending on what it is. This means it can do less work. For now the
code is duplicated and modified. This will get deduplicated after
another round of optimization when memcmp will get a longer-term form.
Both tested with the glibc suite. While the suite does not have a test
for bcmp, I created a wrapper routine which verified that values match
(0 vs 0, 1 vs non-zero).
Reviewed by: kib
Approved by: re (gjb)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D17336
show more ...
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Revision tags: release/11.2.0, release/10.4.0, release/11.1.0, release/11.0.1, release/11.0.0, release/10.3.0, release/10.2.0, release/10.1.0, release/9.3.0, release/10.0.0, release/9.2.0, release/8.4.0, release/9.1.0, release/8.3.0, release/7.4.0, release/8.2.0 |
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93ab7586 |
| 07-Jan-2011 |
Konstantin Belousov <[email protected]> |
Add section .note.GNU-stack for assembly files used by 386 and amd64.
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Revision tags: release/8.1.0, release/7.3.0, release/8.0.0, release/7.2.0, release/7.1.0, release/6.4.0 |
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5d053f46 |
| 02-Nov-2008 |
Peter Wemm <[email protected]> |
We've been lax about matching END() macros in asm code for some time. This
is used to set the ELF size attribute for functions. It isn't normally
critical but some things can make use of it (gdb fo
We've been lax about matching END() macros in asm code for some time. This
is used to set the ELF size attribute for functions. It isn't normally
critical but some things can make use of it (gdb for stack traces).
Valgrind needs it so I'm adding it in. The problem is present on all
branches and on both i386 and amd64.
show more ...
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Revision tags: release/7.0.0, release/6.3.0, release/6.2.0, release/5.5.0, release/6.1.0, release/6.0.0, release/5.4.0 |
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26f6218b |
| 08-Apr-2005 |
Alan Cox <[email protected]> |
Add machine-specific, optimized implementations of bcmp and memcmp.
PR: 73111
Submitted by: Ville-Pertti Keinonen <[email protected]> (taken from NetBSD)
MFC after: 3 weeks
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