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* regenkettenis2013-06-142-0/+4
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* Fix memcpy/memmove return value.kettenis2013-06-142-2/+6
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* new integral bcopy/memmove/memcpy, pulled out of sparc locorederaadt2013-06-133-3/+421
| | | | tested by beck
* syncronize "look in other file" messagesderaadt2013-06-134-4/+4
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* merged bcopy/memmove/memcpyderaadt2013-06-133-129/+142
| | | | tested by bcallah, proofed by jasper, ok tedu
* rework the memcpy family to all use one function body and implementtedu2013-06-133-272/+248
| | | | desired semantics. ok deraadt
* Remove pointless instruction in the memcpy path that snuck in with thekettenis2013-06-131-2/+0
| | | | | | previous commit. ok deraadt@
* take libc bcopy, gut the #ifdefs for other modes, and place it here.deraadt2013-06-131-0/+116
| | | | | Now deficient architectures can use this if they need to. conf/files already tries to pull this in (pointed out by mlarkin)
* ovbcopy begonederaadt2013-06-131-4/+1
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* same bcopy/memmove/memcpy methodology for vax.deraadt2013-06-133-158/+19
| | | | checked over by mlarkin
* merge bcopy/memmove/memcpy into one file, with jumps so that it is morederaadt2013-06-133-3/+113
| | | | | | likely to be in the cache (like how the explanation is split between multiple commits?) tested by various
* merge memcpy/memmove/bcopy into one file, with sub-jumps.deraadt2013-06-133-3/+271
| | | | ok .... I guess noone, because it is summer
* merge bcopy/memcpy/memmove into one function.deraadt2013-06-133-104/+89
| | | | ok mlarkin tedu
* From now on, the MI libkern memcpy should not do overlap handling.deraadt2013-06-121-16/+4
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* regenkettenis2013-06-111-45/+45
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* Optimize memcpy(9) by always doing a forward copy; it should never be usedkettenis2013-06-111-9/+9
| | | | | | | | for overlapping copies. Attempt to be instruction cache friendly by turning things around and make memcpy(9) use the forward copy branch of memmove(9), and implement bcopy(9) by swapping its arguments and dropping into memmove(9). Same change as the one just made to for hppa.
* remove ovbcopy supportderaadt2013-06-1114-20/+0
| | | | ok kettenis
* regenkettenis2013-06-111-43/+43
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* Optimize memcpy(9) by always doing a forward copy; it should never be usedkettenis2013-06-111-9/+9
| | | | | | | | for overlapping copies. Attempt to be instruction cache friendly by turning things around and make memcpy(9) use the forward copy branch of memmove(9), and implement bcopy(9) by swapping its arguments and dropping into memmove(9). ok deraadt@
* portable memmove(), for if an architecture lacks a custom optimizedderaadt2013-06-111-0/+53
| | | | version.
* Add CTASSERT macro, for compile time assertionssf2013-06-081-1/+4
| | | | ok kettenis@
* Add {,u}{div,mod}si3 to libkern and to the kernel as well.miod2013-06-074-0/+195
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* fix an oft copied typo that i'm tired of looking attedu2013-06-0339-39/+39
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* Fix kernel profiling on MP systems by using per-CPU buffers and teachmpi2013-03-121-8/+16
| | | | | | | | | | | kgmon(8) to deal with them, this time without public header changes. Previously various CPUs were iterating over the same global buffer at the same time to modify it and never ended. This diff includes some ideas submited by Thor Simon to NetBSD via miod@. ok deraadt@, mikeb@, haesbaert@
* Back out per-CPU kernel profiling, it shouldn't modify a public headermpi2013-02-121-16/+8
| | | | at this moment.
* Fix kernel profiling on MP systems by using per-CPU buffer. Previouslympi2013-02-111-8/+16
| | | | | | | | | various CPUs were iterating over the same global buffer at the same time to modify it and never ended. This diff includes some ideas submited by Thor Simon to NetBSD via miod@. ok mikeb@, haesbaert@
* Kernel bits for m68k/ELF, mostly from NetBSD. In addition, the `pmod' symbelmiod2013-02-0213-163/+163
| | | | in fpsp has to be renamed due to a clash with other parts of the kernel.
* replace __attribute__((unused)) with __used, which will be defined to thedlg2013-01-161-6/+2
| | | | | | | | | right thing for whichever compiler we use. found while trying to build a profiled kernel on sparc64. solution found by guenther and refined by miod and kettenis. ok guenther@ kettenis@
* Switch m88k ports to ELF.miod2013-01-052-200/+200
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* Remove excessive sys/cdefs.h inclusionderaadt2012-12-053-7/+4
| | | | ok guenther millert kettenis
* Add strnlen() to libkern.matthew2012-04-262-1/+38
| | | | ok deraadt
* Remove assembly version of strlen from i386 and amd64, where it'smikeb2012-01-172-38/+0
| | | | | | | up to 3 times slower than the C code most of the time. This was brought up by DragonflyBSD guys initially. ok deraadt, guenther. miod will not miss it.
* Regen.kettenis2011-11-272-68/+68
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* Switch to proper PA-RISC 2.0 mnemonics. Works around a bug in the assemblerkettenis2011-11-271-22/+22
| | | | getting rid of the (hopefully) last bug in this code.
* Regen.kettenis2011-11-271-3/+3
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* Fix return value of memcpy.kettenis2011-11-271-4/+3
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* Oops, jsing@ changed spcopy.S without realizing that that file is generatedkettenis2011-11-271-7/+3
| | | | from bcopy.m4. Fix that.
* Regen.kettenis2011-11-272-41/+40
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* Replace a few more 32-bit instructions with the proper 64-bit equivalent.kettenis2011-11-271-22/+21
| | | | | Also fix the return value of memcpy. With these changes, this seems to work as advertised now.
* Regen.kettenis2011-09-192-4/+4
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* Avoid sign-extension when extracting the low bits of addresses when checkingkettenis2011-09-191-3/+3
| | | | | | if the addresses are 4-byte aligned. ok jsing@
* we need to alias __movstr* as __movmem* for gcc4jsg2011-07-191-2/+2
| | | | from NetBSD. ok miod@ drahn@
* Regen.jsing2011-04-142-9/+9
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* Use 64-bit operations for address manipulation.jsing2011-04-141-4/+4
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* Correctly load p_addr and avoid trashing the source address.jsing2011-04-141-4/+4
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* syncderaadt2011-03-124-32/+32
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* In the original sparc V7 book (and in the v8 book), the divrem leaf code usedderaadt2011-03-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | local registers for a few temporaries. This was changed to use two global registers. Maybe to permit use in-kernel without conflicting with the register V7 register window handlers. (Was this done by Chris Torek? Is this related to Gordon Irlam's work? Or was it in NetBSD? Hard to tell because NetBSD removed their original cvs tree.) In V8 the ABI was tightened; more global registers became offlimits in different ways. We started supporting sun4m, and did not consider this. As a result, the global registers chosen are the wrong choice. In particular, %g7 is a poor choice for upcoming TLS work. It looks like it is safer to use %g5 and %g6 since these functions are "system software". All re-entrant parts of the system save it. On sparc64 these functions are in libc per ABI requirement, but are unused. On sparc, they occur in bootblocks (no reentrancy), kernel (reentrancy saves globals; kernel is not ABI compliant), userland libc (signal handlers save globals), and ld.so (symbol binding is not re-entrant on its own). Discussed rather extensively with guenther, kettenis, miod and drahn.
* s/DST/DEST/ to avoid warnings when building RAMDISK kernels, which definemiod2011-01-271-60/+60
| | | | TIMEZONE and DST...
* add a new function, explicit_bzero, to be used for erasing "secret" stuff.tedu2011-01-102-1/+22
| | | | | | | unlike normal bzero, we guarantee that the compiler will not optimize out calls to this function for otherwise dead variables. to be adjusted as needed when compilers and linkers get smarter. ok deraadt miod
* Add OpenSSH's timingsafe_bcmp() to libkern.matthew2010-07-202-1/+35
| | | | ok djm@, deraadt@
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