https://sourceware.org/bugzilla/show_bug.cgi?id=21446
Bug ID: 21446
Summary: Incorrect disassembly for msr to dbgdtrtx_el0 in
AArch64
Product: binutils
Version: 2.28
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: chris_s_jones at yahoo dot com
Target Milestone: ---
Created attachment 10032
--> https://sourceware.org/bugzilla/attachment.cgi?id=10032&action=edit
Test case
The AArch64 system registers dbgdtrrx_el0 and dbgdtrtx_el0 use the same
encoding, but the former is only used for MRS instructions and the latter for
MSR.
Assembling the following code:
.text
msr dbgdtrtx_el0, x3
mrs x3, dbgdtrrx_el0
And then disassembling with objdump gives the incorrect register name for the
MSR
0000000000000000 <.text>:
0: d5130503 msr dbgdtrrx_el0, x3
4: d5330503 mrs x3, dbgdtrrx_el0
The resulting binary is, of course, fine, but the disassembly output is off for
the MSR.
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