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* Retguard asm macros for powerpc libc, ld.sogkoehler2020-10-261-2/+3
| | | | | | | | | | 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.
* Consistently reference '_end' instead of 'end' in the brk/sbrk implementationguenther2016-05-301-2/+2
| | | | ok deraadt@
* TIB conversion is complete, so set errno in the syscall stub and eliminateguenther2016-05-151-2/+4
| | | | | | __cerror ok ketternis@
* Use a Thread Information Block in both single and multi-threaded programs.guenther2016-05-071-2/+2
| | | | | | | | | | | | | | | | | This stores errno, the cancelation flags, and related bits for each thread and is allocated by ld.so or libc.a. This is an ABI break from 5.9-stable! Make libpthread dlopen'able by moving the cancelation wrappers into libc and doing locking and fork/errno handling via callbacks that libpthread registers when it first initializes. 'errno' *must* be declared via <errno.h> now! Clean up libpthread's symbol exports like libc. On powerpc, offset the TIB/TCB/TLS data from the register per the ELF spec. Testing by various, particularly sthen@ and patrick@ ok kettenis@
* Adds hidden _libc_FOO aliases for the system call stubs.guenther2015-09-051-3/+6
| | | | | | | | Stop generating _brk and _sbrk symbols: they've already been hidden. Set the ELF symbol size on the syscall stubs. Give the __{min,cur}brk symbols a size and type, and hide more jump labels. ok deraadt@
* Hide many (194!) symbols that nothing should be using.guenther2015-08-261-10/+9
| | | | | | | Delete exect(2); it wasn't portable across archs and nothing used it. ports test build by naddy@ ok deraadt@ kettenis@
* Fetch the _GLOBAL_OFFSET_TABLE_ pointer in a way that's compatible with thekettenis2015-08-231-4/+6
| | | | Secure-PLT ABI.
* Fix missing PIC -> __PIC__ conversions; ok pascalderaadt2012-08-221-2/+2
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* kick, kick. Fix these files which did not come from NetBSD, but thedrahn2002-10-071-0/+27
| | | | powerpc port by Dale Rahn.
* s/curbrk/__curbrk/ as suggested by art, a few _ASM_LABEL added as appropriate.drahn2002-10-071-8/+8
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* cerror -> __cerror as suggested by art, with a couple of missing _ASM_LABEL()drahn2002-10-071-1/+1
| | | | added as appropriate.
* Fixes to the currently unused PIC support in the powerpc asm files.rahnds1999-03-121-1/+1
| | | | contact rahnds@openbsd.org before attempting to use this funcationality.
* Preliminary version for PIC support. Builds and runs standard and profiledrahnds1999-01-281-9/+19
| | | | | just fine. pic version has been compiled, but without a ld.so has not been tested. Needs binutils 2.9.1 or later to build pic version.
* Check-in of powerpc library support.rahnds1996-12-211-0/+32
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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