[Bug binutils/31096] New: nm for mips32 (native or cross-compiled) shows 32bit addresses as sign-extended 64bit addresses

[n.schier at avm dot de]

https://sourceware.org/bugzilla/show_bug.cgi?id=31096

            Bug ID: 31096
           Summary: nm for mips32 (native or cross-compiled) shows 32bit
                    addresses as sign-extended 64bit addresses
           Product: binutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: n.schier at avm dot de
  Target Milestone: ---

nm for MIPS32 shows addresses from 0x8000000 and above as sign-extended(!)
64bit addresses.  To reproduce:

    $ cat <<-eof >test.c
    int test(void) {
        return 0;
    }
    eof

    $ echo ". = 0x80000000;" >test.lds

    $ mips-linux-gnu-gcc test.c -Wl,-T,test.lds -static -nostdlib
-ffreestanding -o test

    $ mips-linux-gnu-nm test
    ffffffff80000000 T test

    $ x86_64-gnu-linux-nm test
    80000000 T test

Tested with x86_64-cross-mips32-nm (binutils 2.33, 2.40 (alpine); 2.35, 2.41
(Debian)) as well as with native nm (under qemu-mips-chroot).  (Same behaviour
was also observed with binutils-multiarch (Debian).)

Initially, the failure was observed during compilation of Linux for MIPS32,
where mips32-nm produces a System.map with sign-extended 64bit addresses. 
Native x86_64-nm shows correct 32bit addresses on the same binary files.

-- 
You are receiving this mail because:
You are on the CC list for the bug.