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* MFC r304285:kib2016-09-161-6/+9
| | | | Implement userspace gettimeofday(2) with HPET timecounter.
* MFC r304928:kib2016-09-032-52/+1
| | | | | | | | | | | | | Do not obliterate errno value in the main thread during ptrace(2) call on x86. MFC r304931: Follow ABI when calling __error from the ptrace(2) wrapper. MFC r305012: Rewrite ptrace(2) wrappers in C. MFC r305022: Restore the requirement of setting errno to zero before calling ptrace(2).
* Replace use of the pipe(2) system call with pipe2(2) with a zero flagsbrooks2016-06-222-54/+1
| | | | | | | | | | | | | | | | value. This eliminates the need for machine dependant assembly wrappers for pipe(2). It also make passing an invalid address to pipe(2) return EFAULT rather than triggering a segfault. Document this behavior (which was already true for pipe2(2), but undocumented). Reviewed by: andrew Approved by: re (gjb) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D6815
* Do not compile ARMv6 instructions on ARMv4/v5. Although clang is finekib2015-12-241-0/+7
| | | | | | | | with mrrc, gcc is not. The disabled code is not executed on ARMv4 anyway. Reported and reviewed by: ian Sponsored by: The FreeBSD Foundation
* Add support for usermode (vdso-like) gettimeofday(2) andkib2015-12-072-1/+80
| | | | | | | | | | | | | | | | | | clock_gettime(2) on ARMv7 and ARMv8 systems which have architectural generic timer hardware. It is similar how the RDTSC timer is used in userspace on x86. Fix a permission problem where generic timer access from EL0 (or userspace on v7) was not properly initialized on APs. For ARMv7, mark the stack non-executable. The shared page is added for all arms (including ARMv8 64bit), and the signal trampoline code is moved to the page. Reviewed by: andrew Discussed with: emaste, mmel Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D4209
* Annotate arm userspace assembler sources stating their tolerance tokib2015-09-299-0/+18
| | | | | | | the non-executable stack. Reviewed by: andrew Sponsored by: The FreeBSD Foundation
* Removed unused special fork() implementations.brooks2015-05-291-49/+0
| | | | | | | | | | | The arm version hasn't been used in ages. The mips version uses a valid, but pointless check of v1 and has been unhooked from the build since r276630. Differential Revision: https://reviews.freebsd.org/D2592 Reviewed by: emaste Sponsored by: DARPA, AFRL
* Use the GOT_* macros to help simplify the code, these work with both picandrew2015-05-112-26/+9
| | | | and non-pic code, and to build for Thumb.
* The lseek(2), mmap(2), truncate(2), ftruncate(2), pread(2), andkib2015-04-181-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | pwrite(2) syscalls are wrapped to provide compatibility with pre-7.x kernels which required padding before the off_t parameter. The fcntl(2) contains compatibility code to handle kernels before the struct flock was changed during the 8.x CURRENT development. The shims were reasonable to allow easier revert to the older kernel at that time. Now, two or three major releases later, shims do not serve any purpose. Such old kernels cannot handle current libc, so revert the compatibility code. Make padded syscalls support conditional under the COMPAT6 config option. For COMPAT32, the syscalls were under COMPAT6 already. Remove WITHOUT_SYSCALL_COMPAT build option, which only purpose was to (partially) disable the removed shims. Reviewed by: jhb, imp (previous versions) Discussed with: peter Sponsored by: The FreeBSD Foundation MFC after: 1 week
* libc: Eliminate duplicate copies of __vdso_gettc.cemaste2015-04-022-49/+1
| | | | | Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D2152
* In ARM asm code, ensure that every ENTRY(foo) has a matching END(foo).ian2014-08-316-0/+6
| | | | | | | | | The EABI unwind info requires a .fnend for every .fnstart, and newer binutils will complain about seeing two .fnstart in a row. This change allows newer tools to compile our code. Reported by: bapt Reviewed by: imp
* Convert from WITHOUT_SYSCALL_COMPAT to MK_SYSCALL_COMPAT.imp2014-04-051-1/+1
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* Rework the __vdso_* symbols attributes to only make the symbols weak,kib2013-01-302-0/+50
| | | | | | | | | | but use normal references instead of weak. This makes the statically linked binaries to use fast gettimeofday(2) by forcing the linker to resolve references and providing the neccessary functions. Reported by: bde Tested by: marius (sparc64) MFC after: 2 weeks
* These warnings are only relevant on NetBSD it seems. They don't seemimp2009-02-191-3/+0
| | | | to be relevant to FreeBSD at all.
* Mark uname(), getdomainname() and setdomainname() with COMPAT_FREEBSD4.ed2008-11-091-2/+1
| | | | | | | | | | | | | | | | | | | | | Looking at our source code history, it seems the uname(), getdomainname() and setdomainname() system calls got deprecated somewhere after FreeBSD 1.1, but they have never been phased out properly. Because we don't have a COMPAT_FREEBSD1, just use COMPAT_FREEBSD4. Also fix the Linuxolator to build without the setdomainname() routine by just making it call userland_sysctl on kern.domainname. Also replace the setdomainname()'s implementation to use this approach, because we're duplicating code with sysctl_domainname(). I wasn't able to keep these three routines working in our COMPAT_FREEBSD32, because that would require yet another keyword for syscalls.master (COMPAT4+NOPROTO). Because this routine is probably unused already, this won't be a problem in practice. If it turns out to be a problem, we'll just restore this functionality. Reviewed by: rdivacky, kib
* Classify mmap, lseek, pread, pwrite, truncate, ftruncate as pseudopeter2007-07-041-3/+6
| | | | | | | | | | syscalls, unless WITHOUT_SYSCALL_COMPAT is defined. The default case will have the .c wrappers still. If you define WITHOUT_SYSCALL_COMPAT, the .c wrappers will go away and libc will make direct syscalls. After 7-stable starts, the direct syscall method will be default. Approved by: re (kensmith)
* Fix sbrk.S to use _end symbol the same way brk.s was fixed some timekan2007-06-271-2/+2
| | | | | | | ago. sbrk.S should have gotten the same change then but was forgotten. Approved by: re (bmah) PR: kern/114049
* Use built-in _end symbol insteadof 'end' for consistency with otherkan2007-05-191-2/+2
| | | | architectures. Linker defines end is synonym for _end.
* Cleanup: we always have to use __error() now, and we shouldn't provide acognet2006-11-092-58/+1
| | | | | | errno symbol, so completely remove the !_REENTRANT case. Spotted out by: ru
* Use the RET macro.cognet2004-11-096-6/+7
| | | | | For setjmp() and longjmp(), put the signal mask where it's supposed to be, instead of in the space reserved for fp regs.
* Remove getcontext.S, it is not needed.cognet2004-11-052-64/+1
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* Import the FreeBSD/arm libc bits.cognet2004-05-1412-0/+655
Obtained from: NetBSD
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