diff options
Diffstat (limited to 'gdbstub/gdbstub.c')
| -rw-r--r-- | gdbstub/gdbstub.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c index 5f28d5cf57..e7d48fa0d4 100644 --- a/gdbstub/gdbstub.c +++ b/gdbstub/gdbstub.c @@ -597,6 +597,15 @@ static int gdb_handle_vcont(const char *p) * or incorrect parameters passed. */ res = 0; + + /* + * target_count and last_target keep track of how many CPUs we are going to + * step or resume, and a pointer to the state structure of one of them, + * respectivelly + */ + int target_count = 0; + CPUState *last_target = NULL; + while (*p) { if (*p++ != ';') { return -ENOTSUP; @@ -637,6 +646,9 @@ static int gdb_handle_vcont(const char *p) while (cpu) { if (newstates[cpu->cpu_index] == 1) { newstates[cpu->cpu_index] = cur_action; + + target_count++; + last_target = cpu; } cpu = gdb_next_attached_cpu(cpu); @@ -654,6 +666,9 @@ static int gdb_handle_vcont(const char *p) while (cpu) { if (newstates[cpu->cpu_index] == 1) { newstates[cpu->cpu_index] = cur_action; + + target_count++; + last_target = cpu; } cpu = gdb_next_cpu_in_process(cpu); @@ -671,11 +686,25 @@ static int gdb_handle_vcont(const char *p) /* only use if no previous match occourred */ if (newstates[cpu->cpu_index] == 1) { newstates[cpu->cpu_index] = cur_action; + + target_count++; + last_target = cpu; } break; } } + /* + * if we're about to resume a specific set of CPUs/threads, make it so that + * in case execution gets interrupted, we can send GDB a stop reply with a + * correct value. it doesn't really matter which CPU we tell GDB the signal + * happened in (VM pauses stop all of them anyway), so long as it is one of + * the ones we resumed/single stepped here. + */ + if (target_count > 0) { + gdbserver_state.c_cpu = last_target; + } + gdbserver_state.signal = signal; gdb_continue_partial(newstates); return res; |