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* Add retguard to macppc kernel locore.S, ofwreal.S, setjmp.Sgkoehler2020-11-282-7/+7
| | | | | | | | | This changes RETGUARD_SETUP(ffs) to RETGUARD_SETUP(ffs, %r11, %r12) and RETGUARD_CHECK(ffs) to RETGUARD_CHECK(ffs, %r11, %r12) to show that r11 and r12 are in use between setup and check, and to pick registers other than r11 and r12 in some kernel functions. ok mortimer@ deraadt@
* Retguard asm macros for powerpc libc, ld.sogkoehler2020-10-262-8/+15
| | | | | | | | | | Add retguard to some, but not all, asm functions in libc. Edit SYS.h in libc to remove the PREFIX macros and add SYSENTRY (more like aarch64 and powerpc64), so we can insert RETGUARD_SETUP after SYSENTRY. Some .S files in this commit don't get retguard, but do stop using the old prefix macros. Tested by deraadt@, who put this diff in a macppc snap.
* Provide an optimized implementation of ffs(3) in libc onnaddy2020-06-262-2/+18
| | | | | | aarch64/powerpc/powerpc64, making use of the count leading zeros instruction. Also add a brief regression test. ok deraadt@ kettenis@
* Add framework for resolving (pun intended) libc namespace issues, usingguenther2015-08-311-2/+4
| | | | | | | | | | | | wrapper .h files and asm labels to let internal calls resolve directly and not be overridable or use the PLT. Then, apply that framework to most of the functions in stdio.h, string.h, err.h, and wchar.h. Delete the should-have-been-hidden-all-along _v?(err|warn)[cx]? symbols while here. tests clean on i386, amd64, sparc64, powerpc, and mips64 naming feedback from kettenis@ and millert@ ok kettenis@
* Make index/rindex weak aliases of strchr/strrchr since they are notmillert2015-05-151-2/+2
| | | | | part of the ISO C standard and have also been dropped from POSIX. OK guenther@ kettenis@
* asm version from libkern, but mempcy() remains tied to thederaadt2014-12-042-2/+170
| | | | | MI syslog_r/abort version for the time being. ok miod
* restructure libc/string + libc/arch/*/string coperation regardingderaadt2014-11-301-3/+5
| | | | | | | | | | | | | | | | (potentially) MD versions (function dependent, not filename dependent) split out memcpy/memmove/bcopy and strchr/index/strrchr/rindex Bring back amd64 .S versions And the final touch: switch all architectures temporarily to MI memcpy.c, which contains syslog + abort for overlapping copies. A nice harsh undefined behaviour. We will clean the entire userland of the remaining issues in this catagory, then switch to the optimised memcpy which skips the memmove check. I tried to cut this change into pieces, but testing each sub-step on every architecture is too time consuming and mindnumbing. ok miod
* junk spacederaadt2009-04-291-1/+1
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* missing parts from last commitmillert1999-04-251-1/+1
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* Check-in of powerpc library support.rahnds1996-12-211-0/+6
NOTE: This will not work until the other pieces are checked in. This is primarily the NetBSD powerpc port, with modifications to support ELF.
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