The branch main has been updated by brooks:
URL:
https://cgit.FreeBSD.org/src/commit/?id=cc4ffc978668cbc9cd58ae7c9e01025a276aa5fd
commit cc4ffc978668cbc9cd58ae7c9e01025a276aa5fd
Author: Brooks Davis <bro...@freebsd.org>
AuthorDate: 2024-03-07 01:01:36 +0000
Commit: Brooks Davis <bro...@freebsd.org>
CommitDate: 2024-03-07 01:01:36 +0000
libsys: don't try to expose yield
The undocumented yield system call has never been implemented via libc
or libsys (except accidentally for <15 minutes in 1998 between commits
abd529cebab9 and 0db2fac06ab7). Avoid trying to export it now to avoid
failures when linking with --no-undefined-version.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D44236
---
lib/libsys/syscalls.map | 2 --
sys/tools/makesyscalls.lua | 4 ++++
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/lib/libsys/syscalls.map b/lib/libsys/syscalls.map
index b79c512834e0..eeb75dc28a2c 100644
--- a/lib/libsys/syscalls.map
+++ b/lib/libsys/syscalls.map
@@ -353,8 +353,6 @@ FBSDprivate_1.0 {
__sys_aio_cancel;
_aio_error;
__sys_aio_error;
- _yield;
- __sys_yield;
_mlockall;
__sys_mlockall;
_munlockall;
diff --git a/sys/tools/makesyscalls.lua b/sys/tools/makesyscalls.lua
index 8784ff603e81..6f21079d0ebc 100644
--- a/sys/tools/makesyscalls.lua
+++ b/sys/tools/makesyscalls.lua
@@ -924,6 +924,10 @@ local function handle_noncompat(sysnum, thr_flag, flags,
sysflags, rettype,
config.syscallprefix, funcalias, sysnum))
write_line("sysmk", string.format(" \\\n\t%s.o",
funcalias))
+ -- yield has never been exposed as a syscall
+ if funcalias == "yield" then
+ return
+ end
if funcalias ~= "exit" and funcalias ~= "vfork" then
write_line("libsysmap", string.format("\t_%s;\n",
funcalias))
