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MIPS: Truncate link address into 32bit for 32bit kernel

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LLD failed to link vmlinux with 64bit load address for 32bit ELF
while bfd will strip 64bit address into 32bit silently.
To fix LLD build, we should truncate load address provided by platform
into 32bit for 32bit kernel.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/786
Link: https://sourceware.org/bugzilla/show_bug.cgi?id=25784
Reviewed-by: Fangrui Song <maskray@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Jiaxun Yang
2020-05-06 13:52:45 +08:00
committed by Thomas Bogendoerfer
parent 53635eb2e2
commit ff487d4103
3 changed files with 14 additions and 3 deletions
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2
arch/mips/boot/compressed/Makefile
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@@ -90,7 +90,7 @@ ifneq ($(zload-y),)
VMLINUZ_LOAD_ADDRESS := $(zload-y)
else
VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
$(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
$(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS))
endif
UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)