Ghidra Emulation error on RISC-V (RV32-IMC) to write in memory display "Check out your emulation options, something wrong!"

Ghidra Emulation error on RISC-V (RV32-IMC) to write in memory display “Check out your emulation options, something wrong!”

How to reproduce the issue:

1. With Ghidra 10.2.2 Load the elf from the archive RISC-V-SecureDuo_Client_Top_Board.zip
2. At addr 0x00000000 decompile the first instruction (it is the entry it is mandatory to discover other function…)
3. Analysis->Auto Analyze … => set “Aggressive Instruction Finder” and do the auto analysis
4. Navigation -> Goto => 0x2488
5. GhidraEMU Plugin set start to 0x2488
6. Step with GhidraEMU until 0x24ac where the issue appears with message box “Check out your emulation options, something wrong!” Note: even if we fix gp for all the code with gp=20000c00 where the store in a3 will be at addr 20000514 (which is mapped) we have the same error The fault appear on following asm line (even if a3 = 0x20000514) 000024ac 98 c2 c.sw a4,0x0(a3)

[Nalen98]

I made some fixes for more clear emulation process, now the plugin will find the existing stack space and use it as the main one. I’ve set values of gp=20000c00 and a3=0x20000514 and got the error that referenced to uninitialized memory, which is a nice sign I guess:

I think I still need to debug this case

[bvernoux]

I confirm if I change the memory map of Stack to Initialized data (set to 0x0 by default) that “fix” the issue (Freeze of Ghidra) for the Stack when reading from it What is remaining is the first issue in the 1st comment which cannot be fixed like that