Sasm-emu

This is a debugging emulator for RiscV64 Linux, similar to qemu-user.

If you pass the -d flag it will drop you into a debugger interface similar to GDB.

I wrote this because using gdb-multiarch + qemu-user via GDB Remote is an awful experience and I was sick of it.

Debugger Commands

• q/CTRL-c => Quit program.
• ALT-k => Switch focus to assembly view.
  • j/k => Move assembly view down/up.
  • ALT-j => Switch focus to debugger.
• r => Run program, ignoring any breakpoints.
• s [x] => Step x instructions. If no x is given, step 1 instruction.
• b [addr] => Set a breakpoint at address addr.
• d [addr] => Delete the breakpoint at address addr. If no addr is given, delete all breakpoints.
• c => Continue until the next breakpoint is reached.
• i => Print the current instruction.
• x [addr] => Print memory (dword) at address addr.
  • xb [addr] => Print byte at address addr.
  • xh [addr] => Print half at address addr.
  • xw [addr] => Print word at address addr.
  • xd [addr] => Print dword at address addr.
• xs [addr] => Print memory at address addr as a string.
• p [r] => Print the register r specified as pc or x[0-31].
• dump => Print all registers.
• perf => Print performance statistics.