Hi all; this issue is solved and tested in 6.0.4-rc1.
The proposed patch has also been accepted for uClibc-ng 1.0.25. kp Am Sonntag, 7. Mai 2017, 17:23:19 schrieb kp kirchdoerfer: > Hi Bob, Hi Erich; > > thanks for the profound work on this bug. > > I've contacted the maintainer of uClibc-ng and received some homework to > track this issue. The proposed patch by by ddrown needs testing and if > successful, might be accepted. > > kp > > Am Mittwoch, 3. Mai 2017, 22:04:53 schrieb Erich Titl: > > Hi Bob > > > > (copying this to leaf-devel) > > > > Sorry, I was too fast, I did not look into the i386 code but the one in > > x86_64 > > > > Am 03.05.2017 um 20:03 schrieb Robert K Coffman Jr. -Info From Data Corp.: > > > Eric, > > > > > > IRC user ddrown confirmed the x64 patch I mentioned earlier seems to fix > > > the issue on i386 as well. I'm not really sure what to do with that > > > information. Is it possible to patch Leaf with it? > > > > > > https://gist.github.com/ddrown/15e943b8fe1da398320b0c0518c95554 > > > > I don't know. It looks like the RESTORE2 macro is extended with a nop > > operator in this patch. This looks like assembly code. > > > > ... > > > > This is i386... > > > > #define RESTORE(name, syscall) RESTORE2(name, syscall) > > > > #ifdef __NR_rt_sigaction > > /* The return code for realtime-signals. */ > > # define RESTORE2(name, syscall) \ > > __asm__ ( \ > > > > ".text\n" \ > > "__" #name ":\n" \ > > " movl $" #syscall ", %eax\n" \ > > " int $0x80\n" \ > > > > ); > > RESTORE(restore_rt, __NR_rt_sigreturn) > > #endif > > > > #ifdef __NR_sigreturn > > /* For the boring old signals. */ > > # undef RESTORE2 > > # define RESTORE2(name, syscall) \ > > __asm__ ( \ > > > > ".text\n" \ > > "__" #name ":\n" \ > > " popl %eax\n" \ > > " movl $" #syscall ", %eax\n" \ > > " int $0x80\n" \ > > > > ); > > RESTORE(restore, __NR_sigreturn) > > #endif > > > > and this is x86_64 > > > > #define RESTORE(name, syscall) RESTORE2(name, syscall) > > #define RESTORE2(name, syscall) \ > > __asm__ ( \ > > > > "nop\n" \ > > ".text\n" \ > > "__" #name ":\n" \ > > " movq $" #syscall ", %rax\n" \ > > " syscall\n" \ > > > > ); > > > > #ifdef __NR_rt_sigaction > > /* The return code for realtime-signals. */ > > RESTORE(restore_rt, __NR_rt_sigreturn) > > #endif > > #ifdef __NR_sigreturn > > RESTORE(restore, __NR_sigreturn) > > #endif > > > > So in i386 the patch appears to be possible, if it is necessary I don't > > know as it looks like the nop operator could be used to make the > > assembly code align to instruction size. The nop operator is already in > > the x86_64 code. > > > > I have not followed uClibc development. I am wondering what their > > position is on this issue. > > > > cheers > > > > ET > > ---------------------------------------------------------------------------- > -- Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > leaf-devel mailing list > leaf-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/leaf-devel ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ leaf-devel mailing list leaf-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-devel
