path: root/sys/conf/files.amd64
diff options
authorEd Schouten <ed@FreeBSD.org>2016-08-10 21:02:41 +0000
committerEd Schouten <ed@FreeBSD.org>2016-08-10 21:02:41 +0000
commit13b4b4df987d8f05c2cd5813cfe05db953c37c9e (patch)
tree6f1539b3db69da365d8d1ef2df5cbd14c5892af6 /sys/conf/files.amd64
parent6178f8e8a6ab27d49d4d0c5cbd05be4ca2d140f7 (diff)
Provide the CloudABI vDSO to its executables.
CloudABI executables already provide support for passing in vDSOs. This functionality is used by the emulator for OS X to inject system call handlers. On FreeBSD, we could use it to optimize calls to gettimeofday(), etc. Though I don't have any plans to optimize any system calls right now, let's go ahead and already pass in a vDSO. This will allow us to simplify the executables, as the traditional "syscall" shims can be removed entirely. It also means that we gain more flexibility with regards to adding and removing system calls. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D7438
Notes: svn path=/head/; revision=303941
Diffstat (limited to 'sys/conf/files.amd64')
1 files changed, 12 insertions, 0 deletions
diff --git a/sys/conf/files.amd64 b/sys/conf/files.amd64
index 331b811081f7..df5d1bcfb88e 100644
--- a/sys/conf/files.amd64
+++ b/sys/conf/files.amd64
@@ -8,6 +8,18 @@
# dependency lines other than the first are silently ignored.
+cloudabi64_vdso.o optional compat_cloudabi64 \
+ dependency "$S/contrib/cloudabi/cloudabi_vdso_x86_64.c" \
+ compile-with "${CC} -shared -nostdinc -nostdlib -Wl,-T$S/compat/cloudabi64/cloudabi64_vdso.lds.s -D_KERNEL -I. -I$S -I$S/contrib/cloudabi -O2 -fomit-frame-pointer $S/contrib/cloudabi/cloudabi_vdso_x86_64.c -o ${.TARGET}" \
+ no-obj no-implicit-rule \
+ clean "cloudabi64_vdso.o"
+cloudabi64_vdso_blob.o optional compat_cloudabi64 \
+ dependency "cloudabi64_vdso.o" \
+ compile-with "${OBJCOPY} --input-target binary --output-target elf64-x86-64-freebsd --binary-architecture i386 cloudabi64_vdso.o ${.TARGET}" \
+ no-implicit-rule \
+ clean "cloudabi64_vdso_blob.o"
linux32_genassym.o optional compat_linux32 \
dependency "$S/amd64/linux32/linux32_genassym.c" \
compile-with "${CC} ${CFLAGS:N-fno-common} -c ${.IMPSRC}" \