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Can't decode MRS.W R3, MSP (ARM-Thumb mode) #1228

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don1001 opened this issue Aug 7, 2018 · 3 comments · Fixed by #1949
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Can't decode MRS.W R3, MSP (ARM-Thumb mode) #1228

don1001 opened this issue Aug 7, 2018 · 3 comments · Fixed by #1949

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@don1001
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don1001 commented Aug 7, 2018

Can't decode MRS.W R3, MSP (ARM-Thumb mode)

IDA:

.text:00000130 EF F3 08 83                 MRS.W   R3, MSP`

Capstone (next branch)

me@me ~ $ cstool -d thumb EFF30883
ERROR: invalid assembly code
@E3V3A
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E3V3A commented Oct 21, 2018 •
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@don1001 @aquynh
What is needed to add it?

@don1001
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don1001 commented Nov 9, 2018 •
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@don1001 @aquynh
What is needed to add it?

I don't know, but this instruction in common in bootloader code so would be good to decode it.

@aquynh
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aquynh commented Mar 15, 2019

looks like CortexM mode? actually Capstone can decode this.

$ cstool cortexm "EF F3 08 83"
 0  ef f3 08 83  mrs	r3, msp

@Rot127 Rot127 mentioned this issue Apr 3, 2023
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Architecture updater (auto-sync) - Updating ARM Rot127/capstone
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@E3V3A @aquynh @don1001