diff options
| author | Paolo 'Blaisorblade' Giarrusso | 2005-06-21 17:16:25 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2005-06-21 19:07:32 -0700 |
| commit | 60b2737de1b1ddfdb90f3ba622634eb49d6f3603 (patch) | |
| tree | a352eda5ca213cdae0a2eabd6693b8a4f573e38f /arch/um/scripts | |
| parent | b77d6adc922b8bbf8b16b67f567958c42962cf88 (diff) | |
[PATCH] uml: fix linkage of tt mode against NPTL
With Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
To make sure switcheroo() can execute when we remap all the executable
image, we used a trick to make it use a local copy of errno... this trick
does not work with NPTL glibc, only with LinuxThreads, so use another
(simpler) one to make it work anyway.
Hopefully, a lot improved thanks to merging with the version of Al Viro
(which had his part of problems, though, i.e. removing a fix to another
bug and not fixing the problem on i386).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/scripts')
| -rw-r--r-- | arch/um/scripts/Makefile.rules | 6 | ||||
| -rw-r--r-- | arch/um/scripts/Makefile.unmap | 22 |
2 files changed, 28 insertions, 0 deletions
diff --git a/arch/um/scripts/Makefile.rules b/arch/um/scripts/Makefile.rules index 98346c711493..7459d09c233e 100644 --- a/arch/um/scripts/Makefile.rules +++ b/arch/um/scripts/Makefile.rules @@ -10,6 +10,12 @@ USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file)) $(USER_OBJS) : c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) \ $(CFLAGS_$(notdir $@)) +# The stubs and unmap.o can't try to call mcount or update basic block data +define unprofile + $(patsubst -pg,,$(patsubst -fprofile-arcs -ftest-coverage,,$(1))) +endef + + quiet_cmd_make_link = SYMLINK $@ cmd_make_link = ln -sf $(srctree)/arch/$(SUBARCH)/$($(notdir $@)-dir)/$(notdir $@) $@ diff --git a/arch/um/scripts/Makefile.unmap b/arch/um/scripts/Makefile.unmap new file mode 100644 index 000000000000..37a8f9765295 --- /dev/null +++ b/arch/um/scripts/Makefile.unmap @@ -0,0 +1,22 @@ +clean-files += unmap_tmp.o unmap_fin.o unmap.o + +ifdef CONFIG_MODE_TT + +#Always build unmap_fin.o +extra-y += unmap_fin.o +#Do dependency tracking for unmap.o (it will be always built, but won't get the tracking unless we use this). +targets += unmap.o + +#XXX: partially copied from arch/um/scripts/Makefile.rules +$(obj)/unmap.o: _c_flags = $(call unprofile,$(CFLAGS)) + +quiet_cmd_wrapld = LD $@ +define cmd_wrapld + $(LD) -r -o $(obj)/unmap_tmp.o $< $(shell $(CC) -print-file-name=libc.a); \ + $(OBJCOPY) $(obj)/unmap_tmp.o $@ -G switcheroo +endef + +$(obj)/unmap_fin.o : $(obj)/unmap.o FORCE + $(call if_changed,wrapld) + +endif |