84 lines
3 KiB
Diff
84 lines
3 KiB
Diff
This makes the Linux kernel build as ELFv2 on big endian ppc64. The upstream
|
|
doesn't seem to be interested in this but it's a small patch that is unlikely
|
|
to break/easy to remake and in worst case can always be ditched.
|
|
|
|
Using ELFv2 has some potential performance benefits and is already always used
|
|
on little endian. It requires a relatively modern toolchain, which we already
|
|
have.
|
|
|
|
Ping q66 if it does not apply.
|
|
|
|
--- a/arch/powerpc/Makefile
|
|
+++ b/arch/powerpc/Makefile
|
|
@@ -93,10 +93,8 @@ MULTIPLEWORD := -mmultiple
|
|
endif
|
|
|
|
ifdef CONFIG_PPC64
|
|
-cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
|
|
-cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mcall-aixdesc)
|
|
-aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
|
|
-aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2
|
|
+cflags-y += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
|
|
+aflags-y += $(call cc-option,-mabi=elfv2,$(call cc-option,-mabi=elfv1))
|
|
endif
|
|
|
|
ifndef CONFIG_CC_IS_CLANG
|
|
@@ -144,14 +142,8 @@ endif
|
|
endif
|
|
|
|
CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no)
|
|
-ifdef CONFIG_CPU_LITTLE_ENDIAN
|
|
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
|
|
-AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2)
|
|
-else
|
|
-CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
|
|
-CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc)
|
|
-AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
|
|
-endif
|
|
+AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mabi=elfv1))
|
|
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
|
|
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
|
|
|
|
--- a/arch/powerpc/boot/Makefile
|
|
+++ b/arch/powerpc/boot/Makefile
|
|
@@ -48,8 +48,8 @@ ifdef CONFIG_CPU_BIG_ENDIAN
|
|
BOOTCFLAGS += -mbig-endian
|
|
else
|
|
BOOTCFLAGS += -mlittle-endian
|
|
-BOOTCFLAGS += $(call cc-option,-mabi=elfv2)
|
|
endif
|
|
+BOOTCFLAGS += $(call cc-option,-mabi=elfv2)
|
|
|
|
BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
|
|
|
|
--- a/drivers/crypto/vmx/Makefile
|
|
+++ b/drivers/crypto/vmx/Makefile
|
|
@@ -5,7 +5,7 @@ vmx-crypto-objs := vmx.o aesp8-ppc.o ghashp8-ppc.o aes.o aes_cbc.o aes_ctr.o aes
|
|
ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
|
|
TARGET := linux-ppc64le
|
|
else
|
|
-TARGET := linux-ppc64
|
|
+TARGET := linux-ppc64v2
|
|
endif
|
|
|
|
quiet_cmd_perl = PERL $@
|
|
--- a/drivers/crypto/vmx/ppc-xlate.pl
|
|
+++ b/drivers/crypto/vmx/ppc-xlate.pl
|
|
@@ -40,7 +40,7 @@ my $globl = sub {
|
|
};
|
|
my $text = sub {
|
|
my $ret = ($flavour =~ /aix/) ? ".csect\t.text[PR],7" : ".text";
|
|
- $ret = ".abiversion 2\n".$ret if ($flavour =~ /linux.*64le/);
|
|
+ $ret = ".abiversion 2\n".$ret if ($flavour =~ /linux.*64(le|v2)/);
|
|
$ret;
|
|
};
|
|
my $machine = sub {
|
|
@@ -142,7 +142,7 @@ my $vmr = sub {
|
|
|
|
# Some ABIs specify vrsave, special-purpose register #256, as reserved
|
|
# for system use.
|
|
-my $no_vrsave = ($flavour =~ /linux-ppc64le/);
|
|
+my $no_vrsave = ($flavour =~ /linux-ppc64(le|v2)/);
|
|
my $mtspr = sub {
|
|
my ($f,$idx,$ra) = @_;
|
|
if ($idx == 256 && $no_vrsave) {
|