src/lib/libc/amd64/sys/pipe.S, branch main FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=main 2016-06-22T21:11:27Z Replace use of the pipe(2) system call with pipe2(2) with a zero flags 2016-06-22T21:11:27Z Brooks Davis brooks@FreeBSD.org 2016-06-22T21:11:27Z urn:sha1:b60998c6331e2be21f1fc29fa6c82d94a1f72ef0 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 Introduce a WEAK_REFERENCE() alias and use it. Get rid of the CNAME and the 2013-11-21T21:25:58Z Andreas Tobler andreast@FreeBSD.org 2013-11-21T21:25:58Z urn:sha1:d2ef321a59c8121f97c30155bd38e06a9eb441e7 CONCAT macros in SYS.h. Reviewed by: bde, kib libc/amd64: Do not export .cerror. 2012-09-06T20:59:49Z Jilles Tjoelker jilles@FreeBSD.org 2012-09-06T20:59:49Z urn:sha1:5ac7ffcc381d2b6835d67430bb1fc184e805dd09 For some reason, libc exports the symbol .cerror (HIDENAME(cerror)), albeit in the FBSDprivate_1.0 version. It looks like there is no reason for this since it is not used from other libraries. Given that it cannot be accessed from C and its strange calling convention, it is rather unlikely that other things rely on it. Perhaps it is from a time when symbols could not be hidden. Most of the amd64 assembler code jumps to .cerror using the GOT. It can jump to it directly now, as in non-PIC mode. There are also some minor size optimizations to instructions but they yield virtually no benefit in the size of libc.so.7 due to padding. Reviewed by: kib Add section .note.GNU-stack for assembly files used by 386 and amd64. 2011-01-07T16:08:40Z Konstantin Belousov kib@FreeBSD.org 2011-01-07T16:08:40Z urn:sha1:93ab75867017bed8892f9f3b1e1bbd6120d49fcd We've been lax about matching END() macros in asm code for some time. This 2008-11-02T01:10:54Z Peter Wemm peter@FreeBSD.org 2008-11-02T01:10:54Z urn:sha1:5d053f461caeb73f6de165aa1e07b2003101605c 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. Per Regents of the University of Calfornia letter, remove advertising 2007-01-09T00:28:16Z Warner Losh imp@FreeBSD.org 2007-01-09T00:28:16Z urn:sha1:c879ae3536e6d92b8d96c8965c5b05fcb9541520 clause. # If I've done so improperly on a file, please let me know. Change the syscall stub branch orders so that the static branch prediction 2004-02-22T02:11:39Z Peter Wemm peter@FreeBSD.org 2004-02-22T02:11:39Z urn:sha1:efbef97de9805dec95db09953426f0b21bb2964f will assume that syscalls will succeed rather than fail. Update for AMD64. Depend on %rdi (first syscall argument) being preserved 2003-04-30T18:13:48Z Peter Wemm peter@FreeBSD.org 2003-04-30T18:13:48Z urn:sha1:0ffd54b17b068da44acdd08eefadb8dc1d28c843 across a "syscall"-style syscall Restore CSRG ID's lost in January 1995. 2002-03-23T02:10:28Z David E. O'Brien obrien@FreeBSD.org 2002-03-23T02:10:28Z urn:sha1:0f4f02856de830ee021e8e9c63883ba7ea0d6497 Removed duplicate VCS ID tags, as per style(9). 2001-08-13T14:06:34Z Ruslan Ermilov ru@FreeBSD.org 2001-08-13T14:06:34Z urn:sha1:8af1452cf8dd1b33da881f84e445d5981eaa9613