diff options
Diffstat (limited to 'target-i386/bpt_helper.c')
| -rw-r--r-- | target-i386/bpt_helper.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/target-i386/bpt_helper.c b/target-i386/bpt_helper.c index ca58ab78c7..7ff41a6c97 100644 --- a/target-i386/bpt_helper.c +++ b/target-i386/bpt_helper.c @@ -228,9 +228,14 @@ void helper_movl_drN_T0(CPUX86State *env, int reg, target_ulong t0) { #ifndef CONFIG_USER_ONLY if (reg < 4) { - hw_breakpoint_remove(env, reg); - env->dr[reg] = t0; - hw_breakpoint_insert(env, reg); + if (hw_breakpoint_enabled(env->dr[7], reg) + && hw_breakpoint_type(env->dr[7], reg) != DR7_TYPE_IO_RW) { + hw_breakpoint_remove(env, reg); + env->dr[reg] = t0; + hw_breakpoint_insert(env, reg); + } else { + env->dr[reg] = t0; + } } else if (reg == 7) { cpu_x86_update_dr7(env, t0); } else { |