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authorJason A. Donenfeld <Jason@zx2c4.com>2019-06-17 13:29:19 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2019-06-20 22:28:52 +0100
commitc5d0e49e8d8f1a23034fdf8e935afc0c8f7ae27d (patch)
tree421552414d589fdd6fe29a043fd899a09eb8ce69
parentcd6c84d8f0cdc911df435bb075ba22ce3c605b07 (diff)
ARM: 8867/1: vdso: pass --be8 to linker if necessary
The commit fe00e50b2db8 ("ARM: 8858/1: vdso: use $(LD) instead of $(CC) to link VDSO") removed the passing of CFLAGS, since ld doesn't take those directly. However, prior, big-endian ARM was relying on gcc to translate its -mbe8 option into ld's --be8 option. Lacking this, ld generated be32 code, making the VDSO generate SIGILL when called by userspace. This commit passes --be8 if CONFIG_CPU_ENDIAN_BE8 is enabled. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
-rw-r--r--arch/arm/vdso/Makefile5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm/vdso/Makefile b/arch/arm/vdso/Makefile
index fadf554d9391..1f5ec9741e6d 100644
--- a/arch/arm/vdso/Makefile
+++ b/arch/arm/vdso/Makefile
@@ -10,9 +10,10 @@ obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
ccflags-y := -fPIC -fno-common -fno-builtin -fno-stack-protector
ccflags-y += -DDISABLE_BRANCH_PROFILING
-ldflags-y = -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \
+ldflags-$(CONFIG_CPU_ENDIAN_BE8) := --be8
+ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \
-z max-page-size=4096 -z common-page-size=4096 \
- -nostdlib -shared \
+ -nostdlib -shared $(ldflags-y) \
$(call ld-option, --hash-style=sysv) \
$(call ld-option, --build-id) \
-T