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Build the powerpc64 kernel as a position-independent executable. At startup,

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it processes its own ELF relocations and can be loaded and run in place at
any physical/virtual address.

NB: This requires an updated loader to boot!

Relnotes:	yes
This commit is contained in:
Nathan Whitehorn 2015-01-31 19:16:51 +00:00
parent 8535fe7d28
commit 0fa2250548
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=277990
2 changed files with 10 additions and 0 deletions
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5
UPDATING
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@ -31,6 +31,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW:
disable the most expensive debugging functionality run
"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
20150131:
The powerpc64 kernel has been changed to a position-independent
executable. This can only be booted with a new version of loader(8),
so make sure to update both world and kernel before rebooting.
20150118:
Clang and llvm have been upgraded to 3.5.1 release. This is a bugfix
only release, no new features have been added. Please see the 20141231

5
sys/conf/Makefile.powerpc
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@ -37,6 +37,11 @@ INCLUDES+= -I$S/contrib/libfdt
CFLAGS+= -msoft-float -Wa,-many
.if ${MACHINE_ARCH} == "powerpc64"
CFLAGS+= -fPIC
LDFLAGS+= -pie
.endif
.if !empty(DDB_ENABLED)
CFLAGS+= -fno-omit-frame-pointer
.endif