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Greentime Hu 987553894f nds32: fix build error "relocation truncated to fit: R_NDS32_25_PCREL_RELA" when
make allyesconfig

It will cause a linking error because the jump assembly code were using j,
however it may be not enough to jump to the destination. We have to change it
with pseudo instruction b. In that way, assembler will generate a set of safe
assembly codes to make sure the destination is able to jump.

Toolchain:
https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/x86_64-gcc-8.1.0-nolibc-nds32le-linux.tar.gz

Command:
PATH=/NOBACKUP/atcsqa06/greentime/os/toolchain-kernel.org/gcc-8.1.0-nolibc/nds32le-linux/bin:$PATH ARCH=nds32 CROSS_COMPILE=nds32le-linux- make allyesconfig
PATH=/NOBACKUP/atcsqa06/greentime/os/toolchain-kernel.org/gcc-8.1.0-nolibc/nds32le-linux/bin:$PATH ARCH=nds32 CROSS_COMPILE=nds32le-linux- make -j8

  MODPOST vmlinux.o
WARNING: EXPORT symbol "copy_page" [vmlinux] version generation failed, symbol will not be versioned.
WARNING: EXPORT symbol "clear_page" [vmlinux] version generation failed, symbol will not be versioned.
nds32le-linux-ld: kernel/futex.o:(.fixup+0x4): relocation truncated to fit: R_NDS32_25_PCREL_RELA against `.text'
nds32le-linux-ld: kernel/futex.o:(.fixup+0xaa): relocation truncated to fit: R_NDS32_25_PCREL_RELA against `.text'
nds32le-linux-ld: kernel/futex.o:(.fixup+0xb0): relocation truncated to fit: R_NDS32_25_PCREL_RELA against `.text'
nds32le-linux-ld: kernel/futex.o:(.fixup+0xb6): relocation truncated to fit: R_NDS32_25_PCREL_RELA against `.text'
nds32le-linux-ld: kernel/futex.o:(.fixup+0xbc): relocation truncated to fit: R_NDS32_25_PCREL_RELA against `.text'
nds32le-linux-ld: kernel/futex.o:(.fixup+0xc4): relocation truncated to fit: R_NDS32_25_PCREL_RELA against `.text'
Makefile:1010: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1

Signed-off-by: Greentime Hu <greentime@andestech.com>
History 2018-07-05 16:13:47 +08:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.