http://sourceware.org/bugzilla/show_bug.cgi?id=14616
Bug #: 14616
Summary: Disassembling unknown thumb opcode should use 2 bytes.
Product: binutils
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: binutils
AssignedTo: unassig...@sourceware.org
ReportedBy: suckf...@ihug.co.nz
Classification: Unclassified
When disassembling arm thumb code, objdump assumes an unknown opcode takes 4
bytes. It would be much better if it only took 2, as the instructions are only
2-byte aligned.
E.g., disassembling a binary block with an entry point at 0x10403e00 I get:
10403dfe: ebd3 b570 ; <UNDEFINED> instruction: 0xebd3b570
10403e02: 4c1c ldr r4, [pc, #112] ; (0x10403e74)
Much better output would be:
10403dfe: ebd3 ; <UNDEFINED> instruction: 0xebd3
10403e00: b570 push {r4, r5, r6, lr}
10403e02: 4c1c ldr r4, [pc, #112] ; (0x10403e74)
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