https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120145
--- Comment #18 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > Eric, it feels that I don't understand that this code is doing. > > 0x000000e6d45f7b0c <+12>: ldx [ %o7 + 0x2c ], %g1 > => 0x000000e6d45f7b10 <+16>: jmpl %o7 + %g1, %g1 > > At begining it loads %o7 + 0x2c aka 0xe6d45f7b30 > <_z20notice_global_symbolp9tree_n...@got.plt> into %g1 > > After that it tries to jump to %o7 + %g1 which is wrong address: > > (gdb) x/gx $o7 + $g1 > 0xfb8ee1f3d44f7b00: Cannot access memory at address 0xfb8ee1f3d44f7b00 > (gdb) OK, it's the jmpl. The @got.plt symbol is supposed to contain an offset so adding it to %o7 (which contains the PC) makes sense. What does %g1 alone point to?
