relocation truncated to fit: R_MIPS_PC16 against `no symbol'

24.16 relocation truncated to fit: R_MIPS_PC16 against `no symbol'







D: scz@nsfocus 2009-04-22 14:21



$ as -v

GNU assembler version 2.18.0 (mips-linux-gnu) using BFD version (GNU Binutils for Debian) 2.18.0.20080103

$ gcc-2.95 -v

gcc version 2.95.4 20011002 (Debian prerelease)



--------------------------------------------------------------------------

int main ( int argc, char * argv[] )

{

    __asm__ __volatile__

    ("



    nop



any_label:



    nop

    /*

     * 编写源代码时这里犯了一个低级错误，j后面没有写target

     */

    j

    nop



    ");



    return( 0 );

}  /* end of main */

--------------------------------------------------------------------------



$ gcc-2.95 -Wall -pipe -O0 -o mips_inline_asm mips_inline_asm.c

/tmp/ccDoinnr.o: In function `any_label':

mips_inline_asm.c:(.text+0x2c): relocation truncated to fit: R_MIPS_PC16 against `no symbol'

collect2: ld returned 1 exit status



这是我简化后的情形，已经很容易发现问题根源。最初是写一个较复杂的嵌入式汇编

代码，中间某处j后面没有写target，编译、汇编阶段均未报错或警告，一直到链接

阶段来了一段类似上述输出的错误信息，折腾了半天，直至偶然发现j后无target。



在此记录备忘，以后排错时可参考。

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