X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fsvm_handler.c;h=21523f9606a61d0f9cd237a4ae4c7216106d7365;hb=d8e510143aa094363d5bf21d6cb7e31a29a6e826;hp=6f58b7c04af9890dc8448c0e72edc59849864fb7;hpb=2b1f4ef19d766727f873476861c64339c8836a40;p=palacios.git

diff --git a/palacios/src/palacios/svm_handler.c b/palacios/src/palacios/svm_handler.c
index 6f58b7c..21523f9 100644
--- a/palacios/src/palacios/svm_handler.c
+++ b/palacios/src/palacios/svm_handler.c
@@ -1,13 +1,13 @@
 #include <palacios/svm_handler.h>
 #include <palacios/vmm.h>
 #include <palacios/vm_guest_mem.h>
-#include <palacios/vmm_emulate.h>
-#include <palacios/svm_ctrl_regs.h>
+#include <palacios/vmm_decoder.h>
+#include <palacios/vmm_ctrl_regs.h>
 #include <palacios/svm_io.h>
+#include <palacios/svm_halt.h>
+#include <palacios/svm_pause.h>
 #include <palacios/vmm_intr.h>
 
-extern struct vmm_os_hooks * os_hooks;
-
 
 int handle_svm_exit(struct guest_info * info) {
   vmcb_ctrl_t * guest_ctrl = 0;
@@ -22,12 +22,59 @@ int handle_svm_exit(struct guest_info * info) {
   info->rip = guest_state->rip;
   info->vm_regs.rsp = guest_state->rsp;
   info->vm_regs.rax = guest_state->rax;
-  info->vm_regs.rsp = guest_state->rsp;  
+
+  info->cpl = guest_state->cpl;
+
+
+  info->ctrl_regs.cr0 = guest_state->cr0;
+  info->ctrl_regs.cr2 = guest_state->cr2;
+  info->ctrl_regs.cr3 = guest_state->cr3;
+  info->ctrl_regs.cr4 = guest_state->cr4;
+  info->ctrl_regs.cr8 = guest_ctrl->guest_ctrl.V_TPR;
+  info->ctrl_regs.rflags = guest_state->rflags;
+
+  get_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
 
 
   exit_code = guest_ctrl->exit_code;
  
-  PrintDebug("SVM Returned: Exit Code: %x\n",exit_code); 
+
+  // Disable printing io exits due to bochs debug messages
+  //if (!((exit_code == VMEXIT_IOIO) && ((ushort_t)(guest_ctrl->exit_info1 >> 16) == 0x402))) {
+
+
+  PrintDebug("SVM Returned: Exit Code: 0x%x \t\t(tsc=%ul)\n",exit_code, (uint_t)info->time_state.guest_tsc); 
+  
+  if (exit_code < 0x4f) {
+    char instr[32];
+    int ret;
+    // Dump out the instr stream
+
+    //PrintDebug("RIP: %x\n", guest_state->rip);
+    PrintDebug("RIP Linear: %x\n", get_addr_linear(info, info->rip, &(info->segments.cs)));
+
+    // OK, now we will read the instruction
+    // The only difference between PROTECTED and PROTECTED_PG is whether we read
+    // from guest_pa or guest_va
+    if (info->mem_mode == PHYSICAL_MEM) { 
+      // The real rip address is actually a combination of the rip + CS base 
+      ret = read_guest_pa_memory(info, get_addr_linear(info, info->rip, &(info->segments.cs)), 32, instr);
+    } else { 
+      ret = read_guest_va_memory(info, get_addr_linear(info, info->rip, &(info->segments.cs)), 32, instr);
+    }
+    
+    if (ret != 32) {
+      // I think we should inject a GPF into the guest
+      PrintDebug("Could not read instruction (ret=%d)\n", ret);
+    } else {
+
+      PrintDebug("Instr Stream:\n");
+      PrintTraceMemDump(instr, 32);
+    }
+  }
+
+
+    //  }
   // PrintDebugVMCB((vmcb_t*)(info->vmm_data));
 
 
@@ -92,39 +139,58 @@ int handle_svm_exit(struct guest_info * info) {
     
     PrintDebug("PageFault at %x (error=%d)\n", fault_addr, *error_code);
 
-  
+    if (info->shdw_pg_mode == SHADOW_PAGING) {
+      if (handle_shadow_pagefault(info, fault_addr, *error_code) == -1) {
+	return -1;
+      }
+    } else {
 
-    if (handle_shadow_pagefault(info, fault_addr, *error_code) == -1) {
+      PrintDebug("Page fault in un implemented paging mode\n");
+     
       return -1;
     }
+  } else if (exit_code == VMEXIT_NPF) {
+    PrintDebug("Currently unhandled Nested Page Fault\n");
+    return -1;
 
+  } else if (exit_code == VMEXIT_INVLPG) {
+    if (info->shdw_pg_mode == SHADOW_PAGING) {
+      PrintDebug("Invlpg\n");
+      if (handle_shadow_invlpg(info) == -1) {
+	return -1;
+      }
+    }
+   
     /*
-      } else if (( (exit_code == VMEXIT_CR3_READ)  ||
-      (exit_code == VMEXIT_CR3_WRITE) ||
-      (exit_code == VMEXIT_INVLPG)    ||
       (exit_code == VMEXIT_INVLPGA)   || 
-      (exit_code == VMEXIT_EXCP14)) && 
-      (info->page_mode == SHADOW_PAGING)) {
-      handle_shadow_paging(info);
     */
     
   } else if (exit_code == VMEXIT_INTR) {
 
     //    handle_svm_intr(info);
 
+  } else if (exit_code == VMEXIT_SMI) { 
+
+    //   handle_svm_smi(info); // ignored for now
+
   } else if (exit_code == VMEXIT_HLT) {
     PrintDebug("Guest halted\n");
-    return -1;
+    if (handle_svm_halt(info) == -1) {
+      return -1;
+    }
+  } else if (exit_code == VMEXIT_PAUSE) { 
+    PrintDebug("Guest paused\n");
+    if (handle_svm_pause(info) == -1) { 
+      return -1;
+    }
   } else {
     addr_t rip_addr;
     char buf[15];
     addr_t host_addr;
 
-    if (info->cpu_mode == REAL) {
-      rip_addr = get_addr_linear(info, guest_state->rip, guest_state->cs.selector);
-    } else {
-      rip_addr = get_addr_linear(info, guest_state->rip, guest_state->cs.base);
-    }
+
+    rip_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
+
 
 
     PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data); 
@@ -141,8 +207,18 @@ int handle_svm_exit(struct guest_info * info) {
 
     
 
-    if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
-      PrintDebug("Could not translate guest_state->rip to host address\n");
+    if (info->mem_mode == PHYSICAL_MEM) {
+      if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
+	PrintDebug("Could not translate guest_state->rip to host address\n");
+	return -1;
+      }
+    } else if (info->mem_mode == VIRTUAL_MEM) {
+      if (guest_va_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
+	PrintDebug("Could not translate guest_state->rip to host address\n");
+	return -1;
+      }
+    } else {
+      PrintDebug("Invalid memory mode\n");
       return -1;
     }
 
@@ -152,37 +228,70 @@ int handle_svm_exit(struct guest_info * info) {
     
     PrintDebug("Reading from 0x%x in guest\n", rip_addr);
     
-    read_guest_pa_memory(info, rip_addr, 15, buf);
+    if (info->mem_mode == PHYSICAL_MEM) {
+      read_guest_pa_memory(info, rip_addr, 15, buf);
+    } else {
+      read_guest_va_memory(info, rip_addr, 15, buf);
+    }
 
     PrintTraceMemDump(buf, 15);
 
-    while(1);
+    return -1;
 
   }
 
 
   // Update the low level state
 
-  if (intr_pending(&(info->intr_state))) {
-
-    switch (get_intr_type(&(info->intr_state))) {
-    case EXTERNAL_IRQ:
-      guest_ctrl->EVENTINJ.vector = get_intr_number(&(info->intr_state));
-      guest_ctrl->EVENTINJ.valid = 1;
-      guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXTERNAL_INTR;
-      
-      break;
+  if (intr_pending(info)) {
+
+    switch (get_intr_type(info)) {
+    case EXTERNAL_IRQ: 
+      {
+	uint_t irq = get_intr_number(info);
+	/*	
+	  guest_ctrl->EVENTINJ.vector = irq;
+	  guest_ctrl->EVENTINJ.valid = 1;
+	  guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXTERNAL_INTR;
+	*/
+	
+	guest_ctrl->guest_ctrl.V_IRQ = 1;
+	guest_ctrl->guest_ctrl.V_INTR_VECTOR = irq;
+	guest_ctrl->guest_ctrl.V_IGN_TPR = 1;
+	guest_ctrl->guest_ctrl.V_INTR_PRIO = 0xf;
+
+	PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->guest_ctrl.V_INTR_VECTOR, info->rip);
+
+	injecting_intr(info, irq, EXTERNAL_IRQ);
+	
+	break;
+      }
     case NMI:
       guest_ctrl->EVENTINJ.type = SVM_INJECTION_NMI;
       break;
     case EXCEPTION:
-      guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION;
-      guest_ctrl->EVENTINJ.error_code = info->intr_state.excp_error_code;
-      break;
-    case SOFTWARE:
+      {
+	uint_t excp = get_intr_number(info);
+
+	guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION;
+	
+	if (info->intr_state.excp_error_code_valid) {  //PAD
+	  guest_ctrl->EVENTINJ.error_code = info->intr_state.excp_error_code;
+	  guest_ctrl->EVENTINJ.ev = 1;
+	  PrintDebug("Injecting error code %x\n", guest_ctrl->EVENTINJ.error_code);
+	}
+	
+	guest_ctrl->EVENTINJ.vector = excp;
+	
+	guest_ctrl->EVENTINJ.valid = 1;
+	PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->EVENTINJ.vector, info->rip);
+	injecting_intr(info, excp, EXCEPTION);
+	break;
+      }
+    case SOFTWARE_INTR:
       guest_ctrl->EVENTINJ.type = SVM_INJECTION_SOFT_INTR;
       break;
-    case VIRTUAL:
+    case VIRTUAL_INTR:
       guest_ctrl->EVENTINJ.type = SVM_INJECTION_VIRTUAL_INTR;
       break;
 
@@ -192,58 +301,30 @@ int handle_svm_exit(struct guest_info * info) {
       return -1;
     }
 
+  }
 
-    PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->EVENTINJ.vector, info->rip);
- 
-
-    // IMPORTANT TODO
-    // We need to figure out stack parameters....
-
-    //EVENTINJ.error_code
 
-  }
+  guest_state->cr0 = info->ctrl_regs.cr0;
+  guest_state->cr2 = info->ctrl_regs.cr2;
+  guest_state->cr3 = info->ctrl_regs.cr3;
+  guest_state->cr4 = info->ctrl_regs.cr4;
+  guest_ctrl->guest_ctrl.V_TPR = info->ctrl_regs.cr8 & 0xff;
+  guest_state->rflags = info->ctrl_regs.rflags;
 
 
+  guest_state->cpl = info->cpl;
 
   guest_state->rax = info->vm_regs.rax;
   guest_state->rip = info->rip;
   guest_state->rsp = info->vm_regs.rsp;
 
-  if (exit_code == VMEXIT_INTR) {
-    PrintDebug("INTR ret IP = %x\n", guest_state->rip);
-  }
-
-  return 0;
-}
-
-
 
+  set_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
 
-int handle_shadow_paging(struct guest_info * info) {
-  vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
-  //  vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
-
-  if (guest_ctrl->exit_code == VMEXIT_CR3_READ) {
-
+  if (exit_code == VMEXIT_INTR) {
+    //PrintDebug("INTR ret IP = %x\n", guest_state->rip);
   }
 
   return 0;
 }
 
-
-
-int handle_svm_intr(struct guest_info * info) {
-  vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
-  // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
-
-  //struct Interrupt_Info * int_info = &(guest_ctrl->exit_int_info);
-
-  //struct vmm_irq_hook * get_irq_hook(&(info->irq_map), int_info->vector);
-
-  PrintDebug("SVM Returned: Exit Code: %x\n",guest_ctrl->exit_code); 
-  PrintDebug("V_INTR_VECTOR: 0x%x\n", guest_ctrl->guest_ctrl.V_INTR_VECTOR);
-
-  while(1);
-    
-  return 0;
-}