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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-01-05 19:35:47 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-02-06 18:40:48 +1100 |
| commit | 4ebde139333659b6de4516830a2785b8a89c08a4 (patch) | |
| tree | a04a547f3971f98a2bff5f777884daf19e5bf863 /Makefile.main | |
| parent | 420d62d8f545204ff615b3062b01babb8b98e11c (diff) | |
| download | skiboot-4ebde139333659b6de4516830a2785b8a89c08a4.zip skiboot-4ebde139333659b6de4516830a2785b8a89c08a4.tar.gz skiboot-4ebde139333659b6de4516830a2785b8a89c08a4.tar.bz2 | |
Initial support for the ELFv2 ABI
Provide an experimental option to compile using ELFv2 ABI even on big
endian builds. ELFv2 + BE is not officially supported by the toolchain,
but it works quite well. It may be useful as a small step toward a
little-endian build.
This saves about 200kB of text/data.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'Makefile.main')
| -rw-r--r-- | Makefile.main | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/Makefile.main b/Makefile.main index d71635b..5656cb7 100644 --- a/Makefile.main +++ b/Makefile.main @@ -71,8 +71,12 @@ endif CFLAGS := -fno-strict-aliasing -pie -mbig-endian -m64 CFLAGS += -Wl,--oformat,elf64-powerpc CFLAGS += -ffixed-r13 -CFLAGS += $(call try-cflag,$(CC),-mabi=elfv1) CFLAGS += $(call try-cflag,$(CC),-std=gnu11) +ifeq ($(ELF_ABI_v2),1) +CFLAGS += $(call try-cflag,$(CC),-mabi=elfv2) +else +CFLAGS += $(call try-cflag,$(CC),-mabi=elfv1) +endif ifeq ($(SKIBOOT_GCOV),1) CFLAGS += -fprofile-arcs -ftest-coverage -DSKIBOOT_GCOV=1 @@ -109,6 +113,11 @@ LDRFLAGS=-melf64ppc #LDFLAGS += -Wl,-v -Wl,-Map,foomap AFLAGS := -D__ASSEMBLY__ -mbig-endian -m64 +ifeq ($(ELF_ABI_v2),1) +AFLAGS += $(call try-cflag,$(CC),-mabi=elfv2) +else +AFLAGS += $(call try-cflag,$(CC),-mabi=elfv1) +endif # Special tool flags: # Do not use the floating point unit |