diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/nx2/gdbrsp.py | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/nx2/gdbrsp.py b/tools/nx2/gdbrsp.py index ba81c33c1a..9b3b2d8b37 100644 --- a/tools/nx2/gdbrsp.py +++ b/tools/nx2/gdbrsp.py @@ -100,6 +100,35 @@ def main(): print(f" t pc={r['pc']:#x} x0={r['x0']:#x} x8={r['x8']:#x}") if stop_at is not None and r["pc"] == stop_at: break + elif op == "breakwhen": + # breakwhen <addr> <reg> <value> [max]: stop at addr only when reg == value. + addr, reg, want = int(parts[1], 16), parts[2], int(parts[3], 16) + for _ in range(int(parts[4]) if len(parts) > 4 else 50): + rsp.cmd(f"Z0,{addr:x},4") + rsp.cmd("c") + regs = rsp.regs() + if regs.get("pc") != addr: + print(" breakwhen: stopped elsewhere at", hex(regs.get("pc", 0))) + break + if regs.get(reg) == want: + print(f" breakwhen: hit with {reg}={want:#x}") + break + rsp.cmd(f"z0,{addr:x},4") + rsp.cmd("s") + print(" " + " ".join(f"{k}={v:#x}" for k, v in regs.items() if k in ("pc", "x0", "x1", "x2", "x19", "x20", "x21", "x22", "x24", "x30"))) + elif op == "flow": + # flow N stop_hex: single-step N instructions, print only non-sequential pcs (branches) + n, stop_at = int(parts[1]), int(parts[2], 16) + prev = rsp.regs().get("pc", 0) + for _ in range(n): + rsp.cmd("s") + r = rsp.regs() + pc = r.get("pc", 0) + if pc != prev + 4: + print(f" f {prev:#x} -> {pc:#x} x0={r.get('x0', 0):#x}") + prev = pc + if pc == stop_at: + break elif op == "continue": print("stop:", rsp.cmd("c")) elif op == "x0": |