1 #include <geekos/svm_handler.h>
2 #include <geekos/vmm.h>
3 #include <geekos/svm_ctrl_regs.h>
7 int handle_svm_exit(guest_info_t * info) {
8 vmcb_ctrl_t * guest_ctrl = 0;
9 vmcb_saved_state_t * guest_state = 0;
10 ulong_t exit_code = 0;
12 guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
13 guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
16 // Update the high level state
17 info->rip = guest_state->rip;
18 info->rsp = guest_state->rsp;
21 PrintDebug("SVM Returned: (Exit Code=%x) (VMCB=%x)\n",&(guest_ctrl->exit_code), info->vmm_data);
22 PrintDebug("RIP: %x\n", guest_state->rip);
26 exit_code = guest_ctrl->exit_code;
28 // PrintDebugVMCB((vmcb_t*)(info->vmm_data));
29 PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
30 PrintDebug("io_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
31 PrintDebug("io_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
33 PrintDebug("io_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
34 PrintDebug("io_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
35 if (exit_code == VMEXIT_IOIO) {
38 } else if (exit_code == VMEXIT_CR0_WRITE) {
39 PrintDebug("CR0 Write\n");
42 handle_cr0_write(info, &new_cr0);
44 guest_state->cr0 = new_cr0;
46 } else if (( (exit_code == VMEXIT_CR3_READ) ||
47 (exit_code == VMEXIT_CR3_WRITE) ||
48 (exit_code == VMEXIT_INVLPG) ||
49 (exit_code == VMEXIT_INVLPGA) ||
50 (exit_code == VMEXIT_EXCP14)) &&
51 (info->page_mode == SHADOW_PAGING)) {
52 handle_shadow_paging(info);
56 // Update the low level state
57 guest_state->rip = info->rip;
58 guest_state->rsp = info->rsp;
65 // This should package up an IO request and call vmm_handle_io
66 int handle_svm_io(guest_info_t * info) {
67 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA((vmcb_t *)(info->vmm_data));
68 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
70 PrintDebug("Ctrl Area=%x\n", ctrl_area);
72 // struct svm_io_info * io_info = (struct svm_io_info *)&(ctrl_area->exit_info1);
76 // PrintDebugVMCB((vmcb_t*)(info->vmm_data));
78 guest_state->rip = ctrl_area->exit_info2;
83 // PrintDebug("Exit On Port %d\n", io_info->port);
89 int handle_shadow_paging(guest_info_t * info) {
90 vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
91 // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
93 if (guest_ctrl->exit_code == VMEXIT_CR3_READ) {