diff options
| -rw-r--r-- | tools/debugger/gdbsx/xg/xg_main.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/debugger/gdbsx/xg/xg_main.c b/tools/debugger/gdbsx/xg/xg_main.c index 9cd9fc3a6d..d2eec0b527 100644 --- a/tools/debugger/gdbsx/xg/xg_main.c +++ b/tools/debugger/gdbsx/xg/xg_main.c @@ -158,6 +158,7 @@ xg_init() /* + * Precondition: domctl global struct must be filled * Returns : 0 Success, failure otherwise with errno set */ static int @@ -366,6 +367,19 @@ _change_TF(vcpuid_t which_vcpu, int guest_bitness, int setit) union vcpu_guest_context_any anyc; int sz = sizeof(anyc); + /* first try the MTF for hvm guest. otherwise do manually */ + if (_hvm_guest) { + domctl.u.debug_op.vcpu = which_vcpu; + domctl.u.debug_op.op = setit ? XEN_DOMCTL_DEBUG_OP_SINGLE_STEP_ON : + XEN_DOMCTL_DEBUG_OP_SINGLE_STEP_OFF; + + if (_domctl_hcall(XEN_DOMCTL_debug_op, NULL, 0) == 0) { + XGTRC("vcpu:%d:MTF success setit:%d\n", which_vcpu, setit); + return 0; + } + XGTRC("vcpu:%d:MTF failed. setit:%d\n", which_vcpu, setit); + } + memset(&anyc, 0, sz); domctl.u.vcpucontext.vcpu = (uint16_t)which_vcpu; set_xen_guest_handle(domctl.u.vcpucontext.ctxt, &anyc.ctxt); |