Re: remove the PF_W of the text program section

["Noah yan" <noah dot yan at gmail dot com>]

Hi Alan,

Thanks again for this.

I did the check, all the object files (*.o) are safe (the .text
section flag is all AX), But I found another two .so files that link
into the final object have .got section marked as AWX. are they
creating the problem? if so, how to do with it?

The ld command to create these .so are like: ld -o
debug32/libgenunix.so -G -znoreloc -h genunix debug32/genunix
debug32/kobj_stubs.o

Tnanks again for help!
Noah


Section Headers:
 [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf Al
 [ 0]                   NULL            00000000 000000 000000 00      0   0  0
 [ 1] .text             PROGBITS        00800000 010000 072ef0 00  AX  0   0 16
 [ 2] .interp           PROGBITS        00872ef0 082ef0 00000b 00   A  0   0  1
 [ 3] .hash             HASH            00872efc 082efc 0020f0 04   A  4   0  4
 [ 4] .dynsym           DYNSYM          00874fec 084fec 004330 10   A  5   1  4
 [ 5] .dynstr           STRTAB          0087931c 08931c 003a55 00   A  0   0  1
 [ 6] .rela.dyn         RELA            0087cd74 08cd74 0002a0 0c   A  4   0  4
 [ 7] .rela.data        RELA            0087d014 08d014 000078 0c   A  4  12  4
 [ 8] .rodata           PROGBITS        0087d08c 08d08c 00cbf8 00   A  0   0  4
 [ 9] .rela.bss         RELA            00889c84 099c84 0000a8 0c   A  4  14  4
 [10] .rela.plt         RELA            00889d2c 099d2c 000bd0 0c   A  4  11  4
 [11] .plt              NOBITS          0088a8fc 09a8fc 000c18 00 WAX  0   0  4
 [12] .data             PROGBITS        0088c000 09c000 007f04 04 WAX  0   0 32
 [13] .dynamic          DYNAMIC         00893f04 0a3f04 0000a8 08  WA  5   0  4
 [14] .bss              NOBITS          00894000 0a3fac 029198 00  WA  0   0 16
 [15] .dynsbss          NOBITS          008bd198 0a3fac 000101 00  WA  0   0  8
 [16] .comment          PROGBITS        00000000 0a3fac 00006d 00      0   0  1


On 8/8/06, Alan Modra <amodra@bigpond.net.au> wrote:
> On Tue, Aug 08, 2006 at 05:48:55PM -0700, Noah yan wrote:
> > Thanks Alan for your comments. "a writable text section", do you mean
> > I need to identify this from sources? if so, only hand-writing
> > assembly code can do this and compiler-generated code does not write
> > to text section, correct?
>
> Use readelf -S on all the object files involved in the link.  (Use -t
> flag with ld to identify the object files.)
>
> --
> Alan Modra
> IBM OzLabs - Linux Technology Centre