On Fri, Jan 16, 2015 at 9:01 PM, Manuel Lauss <manuel.lauss@xxxxxxxxx> wrote:
> On Fri, Jan 16, 2015 at 8:12 PM, Matthew Fortune
> <Matthew.Fortune@xxxxxxxxxx> wrote:
>>> On Fri, Jan 16, 2015 at 6:59 PM, Manuel Lauss <manuel.lauss@xxxxxxxxx>
>>> wrote:
>>> > Hi Paul,
>>> >
>>> > Your patch commit 90cee759f08a6b7a8daab9977d3e163ebbcac220
>>> > ("MIPS: ELF: Set FP mode according to .MIPS.abiflags") completely
>>> > breaks my pure soft-float o32 userland:
>>> >
>>> > [...]
>>> > Freeing unused kernel memory: 244K (80993000 - 809d0000) Failed to
>>> > execute /usr/lib/systemd/systemd (error -84). Attempting defaults...
>>> > Starting init: /sbin/init exists but couldn't execute it (error -84)
>>> > sh: cannot set terminal process group (-1): Inappropriate ioctl for
>>> > device
>>> > sh: no job control in this shell
>>> > sh-4.3# ls
>>> > sh: /bin/ls: Accessing a corrupted shared library sh-4.3#
>>> >
>>> > I've recently rebuilt bash, ncurses, readline and glibc-2.20 (with
>>> > binutils 2.25+) to track down another userland issue, so that may
>>> > explain why at least sh is able to run.
>>>
>>> Although ls and all its dependencies have the following soft-float abi
>>> tag:
>>> Displaying notes found at file offset 0x00000164 with length 0x00000020:
>>> Owner Data size Description
>>> GNU 0x00000010 NT_GNU_ABI_TAG (ABI version tag)
>>> OS: Linux, ABI: 2.6.32
>>> Attribute Section: gnu
>>> File Attributes
>>> Tag_GNU_MIPS_ABI_FP: Soft float
>>
>> Can you provide the output of readelf -hl for 'ls', 'init' and whatever is
>> listed as the interpreter for those executables in the header output shown
>> like:
>>
>> INTERP 0x0000000000000238 0x0000000000400238 0x0000000000400238
>> 0x000000000000001c 0x000000000000001c R 1
>> [Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]
I noticed that /bin/sh does have a .MIPS.abiflags section while systemd
and ls do not. Maybe that's the issue here?
Section to Segment mapping:
Segment Sections...
00
01 .interp
02 .MIPS.abiflags
Manuel
