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 <greent...@andestech.com> --- arch/nds32/include/asm/futex.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/nds32/include/asm/futex.h b/arch/nds32/include/asm/futex.h index eab5e84bd991..cb6cb91cfdf8 100644 --- a/arch/nds32/include/asm/futex.h +++ b/arch/nds32/include/asm/futex.h @@ -16,7 +16,7 @@ " .popsection\n" \ " .pushsection .fixup,\"ax\"\n" \ "4: move %0, " err_reg "\n" \ - " j 3b\n" \ + " b 3b\n" \ " .popsection" #define __futex_atomic_op(insn, ret, oldval, tmp, uaddr, oparg) \ -- 2.16.2
