I noticed that Ski was unable to do a stacktrace on the kernel. Turns out that's because the PT_IA_64_UNWIND program-header is missing. Perhaps this is due to a change in binutils, but in any case, it seems like we should be explicit about the unwind header, so this patch is probably a good idea no matter what. Note that the patch assumes that the earlier patch to add a PT_NOTE header has been applied already. Regards, --david -- Mosberger Consulting LLC, http://www.mosberger-consulting.com/
[IA64] Explicitly put the unwind section into its own program-header. This used to be unnecessary (probably because binutils did it for us), but with current binutils (e.g., v2.17.50.20070804) we won't get the PT_IA_64_UNWIND header without this patch which will break unwinding in a debugger and simulators such as Ski. Signed-off-by: David Mosberger-Tang <dmosberger@xxxxxxxxx> --- arch/ia64/kernel/vmlinux.lds.S~ 2007-08-09 11:38:28.000000000 -0600 +++ arch/ia64/kernel/vmlinux.lds.S 2007-08-09 19:40:08.000000000 -0600 @@ -21,6 +21,7 @@ percpu PT_LOAD; data PT_LOAD; note PT_NOTE; + unwind 0x70000001; /* PT_IA_64_UNWIND, but ld doesn't match the name */ } SECTIONS { @@ -103,7 +104,8 @@ __start_unwind = .; *(.IA_64.unwind*) __end_unwind = .; - } + } :code :unwind + code_continues2 : {} : code RODATA
![]() |