When we support execution from non-RAM MMIO regions, get_page_addr_code()
will return -1 to indicate that there is no RAM at the requested address.
Handle this in tb_check_watchpoint() -- if the exception happened for a
PC which doesn't correspond to RAM then there is no need to invalidate
any TBs, because the one-instruction TB will not have been cached.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
accel/tcg/translate-all.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index 49d77fad44e..d18018fa99d 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -2121,7 +2121,9 @@ void tb_check_watchpoint(CPUState *cpu)
cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags);
addr = get_page_addr_code(env, pc);
- tb_invalidate_phys_range(addr, addr + 1);
+ if (addr != -1) {
+ tb_invalidate_phys_range(addr, addr + 1);
+ }
}
}
--
2.17.1
