https://sourceware.org/bugzilla/show_bug.cgi?id=19983
Bug ID: 19983
Summary: objdump --adjust-vma fails to understand the VMA>=2^32
on 32-bit host with -m i386:x86-64
Product: binutils
Version: 2.26
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: b7.10110111 at gmail dot com
Target Milestone: ---
I'm on a 32-bit x86 machine, trying to disassemble some 64-bit x86_64 code.
Here's an example sequence of commands which reproduces the bug (on 64-bit host
it works correctly):
echo 124 > /tmp/test.bin
objdump -D --target=binary -m i386:x86-64 --adjust-vma=0x7fff015cb0c8
/tmp/test.bin
This gives me the following output:
--------------------
/tmp/test.bin: file format binary
Disassembly of section .data:
ffffffff <.data>:
ffff: 31 .byte 0x31
0: Address 0x00000000 is out of bounds.
--------------------
But if I change 0x7fff015cb0c8 to 0x015cb0c8, so that it fits in 32 bits, I get
normal disassembly:
--------------------
/tmp/test.bin: file format binary
Disassembly of section .data:
015cb0c8 <.data>:
15cb0c8: 31 32 xor %esi,(%rdx)
15cb0ca: 34 0a xor $0xa,%al
--------------------
As we can see %rdx here, it's obvious that 32-bit version of objdump does
support 64-bit code. But apparently, --adjust-vma still doesn't fully support
it.
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