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LedgerHQ / speculos

Ledger Nano/Blue apps emulator
https://speculos.ledger.com/
GNU Lesser General Public License v3.0
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app-boilerplate failed to emulate syscall #175

Closed ixje closed 3 years ago

ixje commented 3 years ago

I'm in the process of going through the developer docs and setting up a dev environment for creating an app. The Ledger app-boilerplate fails to run on Speculos with the following log

./speculos.py ../../app-boilerplate/bin/app.elf 
/opt/ledger/speculos/mcu/nanox_ocr.py:155: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if self.text is b"":
[*] speculos launcher revision: 53d114d
[*] using SDK version 1.6
[*] patching svc instruction at 0x40002230
launcher: failed to emulate syscall 0x60010b06

The syscall in question is defined in nanos-secure-sdk as 

include/syscalls.h:#define SYSCALL_try_context_set_ID_IN 0x60010b06UL

I hope it is not unrealistic to expect that at least the boilerplate app works, no?

greenknot commented 3 years ago

I guess your app is built against the version 2.0 of the SDK. By default, speculos uses the version 1.6 of the SDK (as mentioned in the log) and we'll switch to 2.0 by default soon. Meanwhile, could you try the following command-line:

./speculos.py --sdk 2.0 ../../app-boilerplate/bin/app.elf
greenknot commented 3 years ago

BTW, feel free to join the #speculos channel on Ledger's developer slack.

ixje commented 3 years ago

Great, that works!