https://sourceware.org/bugzilla/show_bug.cgi?id=21000
--- Comment #15 from dave.anglin at bell dot net --- On 2017-02-12, at 8:34 PM, amodra at gmail dot com wrote: > https://sourceware.org/bugzilla/show_bug.cgi?id=21000 > > --- Comment #14 from Alan Modra <amodra at gmail dot com> --- > I obviously didn't understand the alias problem.. If I am grasping it > correctly now, is the complaint about INEQUIVALENT ALIASES really that in the > following load map from a trivial -z relro main.c we have file offsets in the > same page? > > LOAD 0x000000 0x00010000 0x00010000 0x00898 0x00898 R E 0x1000 > LOAD 0x000f20 0x00011f20 0x00011f20 0x0014c 0x0015c RWE 0x1000 Yes, I believe that is correct. I think the file offsets need to be page aligned so that the segments don't overlap when they are mapped to virtual addresses. In a general sense, we can't have two different cache lines mapping to the same location in physical memory, particularly when they are both writeable. This is what we have without the option: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align PHDR 0x000034 0x00010034 0x00010034 0x000c0 0x000c0 R E 0x4 INTERP 0x0000f4 0x000100f4 0x000100f4 0x0000d 0x0000d R 0x1 [Requesting program interpreter: /lib/ld.so.1] LOAD 0x000000 0x00010000 0x00010000 0x0094c 0x0094c R E 0x1000 LOAD 0x001000 0x00011000 0x00011000 0x00188 0x00198 RWE 0x1000 DYNAMIC 0x001028 0x00011028 0x00011028 0x000d8 0x000d8 RW 0x4 > > In which case the fix for this will involve changing > assign_file_positions_for_load_sections -- John David Anglin dave.ang...@bell.net -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
