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
  28
  29
  30
  31   exit_code = guest_ctrl->exit_code;
  32
  33   // PrintDebugVMCB((vmcb_t*)(info->vmm_data));
  34
  35
  36   if (exit_code == VMEXIT_IOIO) {
  37     struct svm_io_info * io_info = (struct svm_io_info *)&(guest_ctrl->exit_info1);
  38
  39     if (io_info->type == 0) {
  40       if (io_info->str) {
  41         handle_svm_io_outs(info);
  42       } else {
  43         handle_svm_io_out(info);
  44       }
  45     } else {
  46       if (io_info->str) {
  47         handle_svm_io_ins(info);
  48       } else {
  49         handle_svm_io_in(info);
  50       }
  51     }
  52   } else if (exit_code == VMEXIT_CR0_WRITE) {
  53     PrintDebug("CR0 Write\n");
  54
  55     if (handle_cr0_write(info) == -1) {
  56       return -1;
  57     }
  58     /*
  59   } else if (( (exit_code == VMEXIT_CR3_READ)  ||
  60                (exit_code == VMEXIT_CR3_WRITE) ||
  61                (exit_code == VMEXIT_INVLPG)    ||
  62                (exit_code == VMEXIT_INVLPGA)   ||
  63                (exit_code == VMEXIT_EXCP14)) &&
  64              (info->page_mode == SHADOW_PAGING)) {
  65     handle_shadow_paging(info);
  66     */
  67   } else {
  68     addr_t rip_addr = get_addr_linear(info, guest_state->rip, guest_state->cs.selector);
  69     char buf[15];
  70     addr_t host_addr;
  71
  72
  73     PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data);
  74     PrintDebug("RIP: %x\n", guest_state->rip);
  75     PrintDebug("RIP Linear: %x\n", rip_addr);
  76
  77     PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
  78
  79     PrintDebug("io_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
  80     PrintDebug("io_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
  81
  82     PrintDebug("io_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
  83     PrintDebug("io_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
  84
  85
  86
  87     if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
  88       PrintDebug("Could not translate guest_state->rip to host address\n");
  89       return -1;
  90     }
  91
  92     PrintDebug("Host Address of rip = 0x%x\n", host_addr);
  93
  94     memset(buf, 0, 15);
  95
  96     PrintDebug("Reading from 0x%x in guest\n", rip_addr);
  97
  98     read_guest_pa_memory(info, rip_addr, 15, buf);
  99
 100     PrintTraceMemDump(buf, 15);
 101
 102     while(1);
 103
 104   }
 105
 106
 107   // Update the low level state
 108   guest_state->rax = info->vm_regs.rax;
 109   guest_state->rip = info->rip;
 110   guest_state->rsp = info->vm_regs.rsp;
 111
 112   return 0;
 113 }
 114
 115
 116
 117
 118 int handle_shadow_paging(struct guest_info * info) {
 119   vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
 120   //  vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
 121
 122   if (guest_ctrl->exit_code == VMEXIT_CR3_READ) {
 123
 124   }
 125
 126   return 0;
 127 }
 128
 129
 130