palacios/src/palacios/svm_handler.c

   1 #include <palacios/svm_handler.h>
   2 #include <palacios/vmm.h>
   3 #include <palacios/vm_guest_mem.h>
   4 #include <palacios/vmm_emulate.h>
   5 #include <palacios/svm_ctrl_regs.h>
   6 #include <palacios/svm_io.h>
   7
   8 extern struct vmm_os_hooks * os_hooks;
   9
  10
  11 int handle_svm_exit(struct guest_info * info) {
  12   vmcb_ctrl_t * guest_ctrl = 0;
  13   vmcb_saved_state_t * guest_state = 0;
  14   ulong_t exit_code = 0;
  15
  16   guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
  17   guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
  18
  19
  20   // Update the high level state
  21   info->rip = guest_state->rip;
  22   info->vm_regs.rsp = guest_state->rsp;
  23   info->vm_regs.rax = guest_state->rax;
  24   info->vm_regs.rsp = guest_state->rsp;
  25
  26
  27   PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data);
  28   PrintDebug("RIP: %x\n", guest_state->rip);
  29
  30
  31
  32   exit_code = guest_ctrl->exit_code;
  33
  34   // PrintDebugVMCB((vmcb_t*)(info->vmm_data));
  35   PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
  36
  37   PrintDebug("io_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
  38   PrintDebug("io_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
  39
  40   PrintDebug("io_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
  41   PrintDebug("io_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
  42
  43
  44   if (exit_code == VMEXIT_IOIO) {
  45     struct svm_io_info * io_info = (struct svm_io_info *)&(guest_ctrl->exit_info1);
  46
  47     if (io_info->type == 0) {
  48       if (io_info->str) {
  49         handle_svm_io_outs(info);
  50       } else {
  51         handle_svm_io_out(info);
  52       }
  53     } else {
  54       if (io_info->str) {
  55         handle_svm_io_ins(info);
  56       } else {
  57         handle_svm_io_in(info);
  58       }
  59     }
  60   } else if (exit_code == VMEXIT_CR0_WRITE) {
  61     PrintDebug("CR0 Write\n");
  62
  63     if (handle_cr0_write(info) == -1) {
  64       return -1;
  65     }
  66     /*
  67   } else if (( (exit_code == VMEXIT_CR3_READ)  ||
  68                (exit_code == VMEXIT_CR3_WRITE) ||
  69                (exit_code == VMEXIT_INVLPG)    ||
  70                (exit_code == VMEXIT_INVLPGA)   ||
  71                (exit_code == VMEXIT_EXCP14)) &&
  72              (info->page_mode == SHADOW_PAGING)) {
  73     handle_shadow_paging(info);
  74     */
  75   } else {
  76     addr_t rip_addr = get_addr_linear(info, guest_state->rip, guest_state->cs.selector);
  77     char buf[15];
  78     addr_t host_addr;
  79
  80     if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
  81       PrintDebug("Could not translate guest_state->rip to host address\n");
  82       return -1;
  83     }
  84
  85     PrintDebug("Host Address of rip = 0x%x\n", host_addr);
  86
  87     memset(buf, 0, 15);
  88
  89     PrintDebug("Reading from 0x%x in guest\n", rip_addr);
  90
  91     read_guest_pa_memory(info, rip_addr, 15, buf);
  92
  93     PrintTraceMemDump(buf, 15);
  94
  95   }
  96
  97
  98   // Update the low level state
  99   guest_state->rax = info->vm_regs.rax;
 100   guest_state->rip = info->rip;
 101   guest_state->rsp = info->vm_regs.rsp;
 102
 103   return 0;
 104 }
 105
 106
 107
 108
 109 int handle_shadow_paging(struct guest_info * info) {
 110   vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
 111   //  vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
 112
 113   if (guest_ctrl->exit_code == VMEXIT_CR3_READ) {
 114
 115   }
 116
 117   return 0;
 118 }
 119
 120
 121