[lldb-dev] Disassembling issue

[Ted Woodward via lldb-dev]

The error is coming from source/Commands/CommandObjectDisassemble.cpp . It’s not able to create the disassembler for your architecture. The call to Disassembler::FindPlugin fails.
My guess is something in the call to MCDisasmInstance::Create in source/Plugins/Disassembler/llvm/DisassemblerLLVMC.cpp is failing. Step through that and make sure everything there is working.

Ted

From: lldb-dev <lldb-dev-bounces at lists.llvm.org> On Behalf Of Romaric Jodin via lldb-dev
Sent: Wednesday, June 12, 2019 8:23 AM
To: lldb-dev at lists.llvm.org
Subject: [EXT] [lldb-dev] Disassembling issue

Hi everyone,

I'm trying to have lldb being able to debug my architecture. It does it well after loading my elf. But then I run it, stop it in middle, try to disassemble and at that point it seems that I lost some information about my architecture. lldb tries to disassemble it for x86, which in not possible with my toolchain.

Here is a log of what I am doing:

(lldb) file test
Current executable set to 'test' (dpu).
(lldb) dis -s 0x80000000
test`__bootstrap:
test[0x80000000] <+0>:  jnz    id, 0x80000020
test[0x80000008] <+8>:  move   r0, 0xff
test[0x80000010] <+16>: release r0, 0x0, nz, 0x80000018
test[0x80000018] <+24>: sub    r0, r0, 0x1, pl, 0x80000010
(lldb) r
Process 21312 launched: '/home/rjodin/work/dpu_tools/llvm/lldb/test/test' (dpu)
Process 21312 stopped
* thread #1, name = 'DPUthread0', stop reason = Thread stopped
    frame #0: 0x0000000080000090
(lldb) dis -s 0x80000000
error: Unable to find Disassembler plug-in for the 'x86_64' architecture.
(lldb)

Any ideas of what I am missing in my implementation?
Thanks,
--
Romaric JODIN
UPMEM
Software Engineer

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