http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> 2011-07-25 16:41:36 UTC --- (In reply to comment #7) > (In reply to comment #1) > > X32 dynamic linker is miscompiled: > > BTW: These two functions look the same to me. > > "lea (%rsi,%rdx,1),%edx" is the same as "add %esi,%edx". > > Can you please post the values of %rsi and %rdx before the insn and %rdx and > %r13d after the insn? > > The %rdx value you posted was from "mov -0xc(%rdx),%edx" Working ld.so sets EDX properly with: 0x0011470a <+922>: lea (%rdx,%rdx,2),%edx 0x0011470d <+925>: lea (%rcx,%rdx,4),%eax 0x00114710 <+928>: cmp %eax,%ecx 0x00114712 <+930>: mov %eax,%ebx 0x00114714 <+932>: jae 0x11475b <_dl_start+1003> 0x00114716 <+934>: cmpb $0x8,0x4(%r8) 0x0011471b <+939>: mov (%r8),%edx Bad ld.so sets EDX with 0x001147ca <+922>: lea (%rdx,%rdx,2),%eax 0x001147cd <+925>: lea (%rcx,%rax,4),%eax 0x001147d0 <+928>: cmp %eax,%ecx 0x001147d2 <+930>: mov %eax,%ebx 0x001147d4 <+932>: jae 0x11481c <_dl_start+1004> 0x001147d6 <+934>: cmpb $0x8,0x4(%r8) 0x001147db <+939>: mov (%r8),%eax 0x001147de <+942>: jne 0x1148f1 <_dl_start+1217> 0x001147e4 <+948>: lea 0xc(%r8),%esi 0x001147e8 <+952>: lea 0x0(%r13,%rax,1),%edx
