#include <palacios/vmx.h>
#include <palacios/vmcs.h>
#include <palacios/vmm.h>
+#include <palacios/vmx_lowlevel.h>
+#include <palacios/vmm_lowlevel.h>
+#include <palacios/vmm_config.h>
+#include <palacios/vmm_ctrl_regs.h>
+#include <palacios/vm_guest_mem.h>
+static addr_t vmxon_ptr_phys;
+extern int v3_vmx_exit_handler();
+extern int v3_vmx_vmlaunch(struct v3_gprs * vm_regs);
-//
-//
-// CRUFT
-//
-//
+static int inline check_vmcs_write(vmcs_field_t field, addr_t val)
+{
+ int ret = 0;
+ ret = vmcs_write(field,val);
+ if (ret != VMX_SUCCESS) {
+ PrintError("VMWRITE error on %s!: %d\n", v3_vmcs_field_to_str(field), ret);
+ return 1;
+ }
+ return 0;
+}
-#include <palacios/vmm_util.h>
-#include <palacios/vmm_string.h>
+static int update_vmcs_host_state(struct guest_info * info) {
+ int vmx_ret = 0;
+ addr_t tmp;
+ struct vmx_data * arch_data = (struct vmx_data *)(info->vmm_data);
+ struct v3_msr tmp_msr;
+ __asm__ __volatile__ ( "movq %%cr0, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmx_ret |= check_vmcs_write(VMCS_HOST_CR0, tmp);
-extern int Launch_VM(ullong_t vmcsPtr, uint_t eip);
+ __asm__ __volatile__ ( "movq %%cr3, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmx_ret |= check_vmcs_write(VMCS_HOST_CR3, tmp);
-#define NUMPORTS 65536
+ __asm__ __volatile__ ( "movq %%cr4, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmx_ret |= check_vmcs_write(VMCS_HOST_CR4, tmp);
-#define VMXASSIST_INFO_PORT 0x0e9
-#define ROMBIOS_PANIC_PORT 0x400
-#define ROMBIOS_PANIC_PORT2 0x401
-#define ROMBIOS_INFO_PORT 0x402
-#define ROMBIOS_DEBUG_PORT 0x403
-static struct VM theVM;
+ vmx_ret |= check_vmcs_write(VMCS_HOST_GDTR_BASE, arch_data->host_state.gdtr.base);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_IDTR_BASE, arch_data->host_state.idtr.base);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_TR_BASE, arch_data->host_state.tr.base);
-static uint_t GetLinearIP(struct VM * vm) {
- if (vm->state == VM_VMXASSIST_V8086_BIOS || vm->state == VM_VMXASSIST_V8086) {
- return vm->vmcs.guestStateArea.cs.baseAddr + vm->vmcs.guestStateArea.rip;
- } else {
- return vm->vmcs.guestStateArea.rip;
- }
-}
+#define FS_BASE_MSR 0xc0000100
+#define GS_BASE_MSR 0xc0000101
+ // FS.BASE MSR
+ v3_get_msr(FS_BASE_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmx_ret |= check_vmcs_write(VMCS_HOST_FS_BASE, tmp_msr.value);
+ // GS.BASE MSR
+ v3_get_msr(GS_BASE_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmx_ret |= check_vmcs_write(VMCS_HOST_GS_BASE, tmp_msr.value);
-#define MAX_CODE 512
-#define INSTR_OFFSET_START 17
-#define NOP_SEQ_LEN 10
-#define INSTR_OFFSET_END (INSTR_OFFSET_START + NOP_SEQ_LEN - 1)
-#define TEMPLATE_CODE_LEN 35
-uint_t oldesp = 0;
-uint_t myregs = 0;
+ __asm__ __volatile__ ( "movq %%cs, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmx_ret |= check_vmcs_write(VMCS_HOST_CS_SELECTOR, tmp);
+ __asm__ __volatile__ ( "movq %%ss, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmx_ret |= check_vmcs_write(VMCS_HOST_SS_SELECTOR, tmp);
+ __asm__ __volatile__ ( "movq %%ds, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmx_ret |= check_vmcs_write(VMCS_HOST_DS_SELECTOR, tmp);
+ __asm__ __volatile__ ( "movq %%es, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmx_ret |= check_vmcs_write(VMCS_HOST_ES_SELECTOR, tmp);
+ __asm__ __volatile__ ( "movq %%fs, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmx_ret |= check_vmcs_write(VMCS_HOST_FS_SELECTOR, tmp);
+ __asm__ __volatile__ ( "movq %%gs, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmx_ret |= check_vmcs_write(VMCS_HOST_GS_SELECTOR, tmp);
-extern uint_t VMCS_CLEAR();
-extern uint_t VMCS_LOAD();
-extern uint_t VMCS_STORE();
-extern uint_t VMCS_LAUNCH();
-extern uint_t VMCS_RESUME();
-extern uint_t Init_VMCS_HostState();
-extern uint_t Init_VMCS_GuestState();
+ vmx_ret |= check_vmcs_write(VMCS_HOST_TR_SELECTOR, arch_data->host_state.tr.selector);
+#define SYSENTER_CS_MSR 0x00000174
+#define SYSENTER_ESP_MSR 0x00000175
+#define SYSENTER_EIP_MSR 0x00000176
+ // SYSENTER CS MSR
+ v3_get_msr(SYSENTER_CS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmx_ret |= check_vmcs_write(VMCS_HOST_SYSENTER_CS, tmp_msr.lo);
-extern int Get_CR2();
-extern int vmRunning;
+ // SYSENTER_ESP MSR
+ v3_get_msr(SYSENTER_ESP_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmx_ret |= check_vmcs_write(VMCS_HOST_SYSENTER_ESP, tmp_msr.value);
+ // SYSENTER_EIP MSR
+ v3_get_msr(SYSENTER_EIP_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmx_ret |= check_vmcs_write(VMCS_HOST_SYSENTER_EIP, tmp_msr.value);
+ return vmx_ret;
+}
-void DecodeCurrentInstruction(struct VM *vm, struct Instruction *inst)
-{
- // this is a gruesome hack
- uint_t address = GetLinearIP(vm);
- uint_t length = vm->vmcs.exitInfoFields.instrLength;
- unsigned char *t = (unsigned char *) address;
+
+#if 0
+// For the 32 bit reserved bit fields
+// MB1s are in the low 32 bits, MBZs are in the high 32 bits of the MSR
+static uint32_t sanitize_bits1(uint32_t msr_num, uint32_t val) {
+ v3_msr_t mask_msr;
+
+ PrintDebug("sanitize_bits1 (MSR:%x)\n", msr_num);
+
+ v3_get_msr(msr_num, &mask_msr.hi, &mask_msr.lo);
+
+ PrintDebug("MSR %x = %x : %x \n", msr_num, mask_msr.hi, mask_msr.lo);
+
+ val |= mask_msr.lo;
+ val |= mask_msr.hi;
- PrintTrace("DecodeCurrentInstruction: instruction is\n");
- PrintTraceMemDump(t,length);
-
- if (length==3 && t[0]==0x0f && t[1]==0x22 && t[2]==0xc0) {
- // mov from eax to cr0
- // usually used to signal
- inst->type=VM_MOV_TO_CR0;
- inst->address=address;
- inst->size=length;
- inst->input1=vm->registers.eax;
- inst->input2=vm->vmcs.guestStateArea.cr0;
- inst->output=vm->registers.eax;
- PrintTrace("MOV FROM EAX TO CR0\n");
- } else {
- inst->type=VM_UNKNOWN_INST;
- }
+ return val;
}
-static void V8086ModeSegmentRegisterFixup(struct VM *vm)
-{
- vm->vmcs.guestStateArea.cs.baseAddr = vm->vmcs.guestStateArea.cs.selector << 4;
- vm->vmcs.guestStateArea.es.baseAddr = vm->vmcs.guestStateArea.es.selector << 4;
- vm->vmcs.guestStateArea.ss.baseAddr = vm->vmcs.guestStateArea.ss.selector << 4;
- vm->vmcs.guestStateArea.ds.baseAddr = vm->vmcs.guestStateArea.ds.selector << 4;
- vm->vmcs.guestStateArea.fs.baseAddr = vm->vmcs.guestStateArea.fs.selector << 4;
- vm->vmcs.guestStateArea.gs.baseAddr = vm->vmcs.guestStateArea.gs.selector << 4;
-}
-static void SetupV8086ModeForBoot(struct VM *vm)
-{
- vm->state = VM_VMXASSIST_V8086_BIOS;
+static addr_t sanitize_bits2(uint32_t msr_num0, uint32_t msr_num1, addr_t val) {
+ v3_msr_t msr0, msr1;
+ addr_t msr0_val, msr1_val;
- // Put guest into V8086 mode on return
- vm->vmcs.guestStateArea.rflags |= EFLAGS_VM | EFLAGS_IOPL_HI | EFLAGS_IOPL_LO ;
-
- // We will start at f000:fff0 on return
- //
- // We want this to look as much as possible as a processor
- // reset
- vm->vmcs.guestStateArea.rip = 0xfff0; // note, 16 bit rip
- vm->vmcs.guestStateArea.cs.selector = 0xf000;
- vm->vmcs.guestStateArea.cs.limit = 0xffff;
- vm->vmcs.guestStateArea.cs.access.as_dword = 0xf3;
-
- vm->vmcs.guestStateArea.ss.selector = 0x0000;
- vm->vmcs.guestStateArea.ss.limit = 0xffff;
- vm->vmcs.guestStateArea.ss.access.as_dword = 0xf3;
-
- vm->vmcs.guestStateArea.ds.selector = 0x0000;
- vm->vmcs.guestStateArea.ds.limit = 0xffff;
- vm->vmcs.guestStateArea.ds.access.as_dword = 0xf3;
-
- vm->vmcs.guestStateArea.es.selector = 0x0000;
- vm->vmcs.guestStateArea.es.limit = 0xffff;
- vm->vmcs.guestStateArea.es.access.as_dword = 0xf3;
-
- vm->vmcs.guestStateArea.fs.selector = 0x0000;
- vm->vmcs.guestStateArea.fs.limit = 0xffff;
- vm->vmcs.guestStateArea.fs.access.as_dword = 0xf3;
-
- vm->vmcs.guestStateArea.gs.selector = 0x0000;
- vm->vmcs.guestStateArea.gs.limit = 0xffff;
- vm->vmcs.guestStateArea.gs.access.as_dword = 0xf3;
+ PrintDebug("sanitize_bits2 (MSR0=%x, MSR1=%x)\n", msr_num0, msr_num1);
+
+ v3_get_msr(msr_num0, &msr0.hi, &msr0.lo);
+ v3_get_msr(msr_num1, &msr1.hi, &msr1.lo);
- V8086ModeSegmentRegisterFixup(vm);
+ // This generates a mask that is the natural bit width of the CPU
+ msr0_val = msr0.value;
+ msr1_val = msr1.value;
- PrintTrace_VMCSData(&(vm->vmcs));
+ PrintDebug("MSR %x = %p, %x = %p \n", msr_num0, (void*)msr0_val, msr_num1, (void*)msr1_val);
-}
-
+ val |= msr0_val;
+ val |= msr1_val;
+ return val;
+}
+static int setup_base_host_state() {
+
-static void ConfigureExits(struct VM *vm)
-{
- CopyOutVMCSExecCtrlFields(&(vm->vmcs.execCtrlFields));
-
- vm->vmcs.execCtrlFields.pinCtrls |= 0
- // EXTERNAL_INTERRUPT_EXITING
- | NMI_EXITING;
- vm->vmcs.execCtrlFields.procCtrls |= 0
- // INTERRUPT_WINDOWS_EXIT
- | USE_TSC_OFFSETTING
- | HLT_EXITING
- | INVLPG_EXITING
- | MWAIT_EXITING
- | RDPMC_EXITING
- | RDTSC_EXITING
- | MOVDR_EXITING
- | UNCONDITION_IO_EXITING
- | MONITOR_EXITING
- | PAUSE_EXITING ;
-
- CopyInVMCSExecCtrlFields(&(vm->vmcs.execCtrlFields));
-
- CopyOutVMCSExitCtrlFields(&(vm->vmcs.exitCtrlFields));
- vm->vmcs.exitCtrlFields.exitCtrls |= ACK_IRQ_ON_EXIT;
-
- CopyInVMCSExitCtrlFields(&(vm->vmcs.exitCtrlFields));
+ // vmwrite(HOST_IDTR_BASE,
-/* VMCS_READ(VM_EXIT_CTRLS, &flags); */
-/* flags |= ACK_IRQ_ON_EXIT; */
-/* VMCS_WRITE(VM_EXIT_CTRLS, &flags); */
}
-extern int RunVMM();
-extern int SAFE_VM_LAUNCH();
+#endif
+
-int MyLaunch(struct VM *vm)
+static void inline translate_segment_access(struct v3_segment * v3_seg,
+ struct vmcs_segment_access * access)
{
- ullong_t vmcs = (ullong_t)((uint_t) (vm->vmcsregion));
- uint_t entry_eip = vm->descriptor.entry_ip;
- uint_t exit_eip = vm->descriptor.exit_eip;
- uint_t guest_esp = vm->descriptor.guest_esp;
- uint_t f = 0xffffffff;
- uint_t tmpReg = 0;
- int ret;
- int vmm_ret = 0;
-
- PrintTrace("Guest ESP: 0x%x (%u)\n", guest_esp, guest_esp);
-
- exit_eip = (uint_t)RunVMM;
-
- PrintTrace("Clear\n");
- VMCS_CLEAR(vmcs);
- PrintTrace("Load\n");
- VMCS_LOAD(vmcs);
-
-
- PrintTrace("VMCS_LINK_PTR\n");
- VMCS_WRITE(VMCS_LINK_PTR, &f);
- PrintTrace("VMCS_LINK_PTR_HIGH\n");
- VMCS_WRITE(VMCS_LINK_PTR_HIGH, &f);
-
-
- SetCtrlBitsCorrectly(IA32_VMX_PINBASED_CTLS_MSR, PIN_VM_EXEC_CTRLS);
- SetCtrlBitsCorrectly(IA32_VMX_PROCBASED_CTLS_MSR, PROC_VM_EXEC_CTRLS);
- SetCtrlBitsCorrectly(IA32_VMX_EXIT_CTLS_MSR, VM_EXIT_CTRLS);
- SetCtrlBitsCorrectly(IA32_VMX_ENTRY_CTLS_MSR, VM_ENTRY_CTRLS);
-
- //
- //
- //SetCtrlBitsCorrectly(IA32_something,GUEST_IA32_DEBUGCTL);
- //SetCtrlBitsCorrectly(IA32_something,GUEST_IA32_DEBUGCTL_HIGH);
-
-
- /* Host state */
- PrintTrace("Setting up host state\n");
- SetCRBitsCorrectly(IA32_VMX_CR0_FIXED0_MSR, IA32_VMX_CR0_FIXED1_MSR, HOST_CR0);
- SetCRBitsCorrectly(IA32_VMX_CR4_FIXED0_MSR, IA32_VMX_CR4_FIXED1_MSR, HOST_CR4);
- ret = Init_VMCS_HostState();
-
- if (ret != VMX_SUCCESS) {
- if (ret == VMX_FAIL_VALID) {
- PrintTrace("Init Host state: VMCS FAILED WITH ERROR\n");
- } else {
- PrintTrace("Init Host state: Invalid VMCS\n");
- }
- return ret;
- }
+ access->type = v3_seg->type;
+ access->desc_type = v3_seg->system;
+ access->dpl = v3_seg->dpl;
+ access->present = v3_seg->present;
+ access->avail = v3_seg->avail;
+ access->long_mode = v3_seg->long_mode;
+ access->db = v3_seg->db;
+ access->granularity = v3_seg->granularity;
+}
- // PrintTrace("HOST_RIP: %x (%u)\n", exit_eip, exit_eip);
- VMCS_WRITE(HOST_RIP, &exit_eip);
+static int inline vmcs_write_guest_segments(struct guest_info* info)
+{
+ int ret = 0;
+ struct vmcs_segment_access access;
- /* Guest state */
- PrintTrace("Setting up guest state\n");
- PrintTrace("GUEST_RIP: %x (%u)\n", entry_eip, entry_eip);
- VMCS_WRITE(GUEST_RIP, &entry_eip);
+ memset(&access, 0, sizeof(access));
- SetCRBitsCorrectly(IA32_VMX_CR0_FIXED0_MSR, IA32_VMX_CR0_FIXED1_MSR, GUEST_CR0);
- SetCRBitsCorrectly(IA32_VMX_CR4_FIXED0_MSR, IA32_VMX_CR4_FIXED1_MSR, GUEST_CR4);
- ret = Init_VMCS_GuestState();
+ /* CS Segment */
+ translate_segment_access(&(info->segments.cs), &access);
- PrintTrace("InitGuestState returned\n");
+ ret |= check_vmcs_write(VMCS_GUEST_CS_BASE, info->segments.cs.base);
+ ret |= check_vmcs_write(VMCS_GUEST_CS_SELECTOR, info->segments.cs.selector);
+ ret |= check_vmcs_write(VMCS_GUEST_CS_LIMIT, info->segments.cs.limit);
+ ret |= check_vmcs_write(VMCS_GUEST_CS_ACCESS, access.value);
- if (ret != VMX_SUCCESS) {
- if (ret == VMX_FAIL_VALID) {
- PrintTrace("Init Guest state: VMCS FAILED WITH ERROR\n");
- } else {
- PrintTrace("Init Guest state: Invalid VMCS\n");
- }
- return ret;
- }
- PrintTrace("GUEST_RSP: %x (%u)\n", guest_esp, (uint_t)guest_esp);
- VMCS_WRITE(GUEST_RSP, &guest_esp);
+ /* SS Segment */
+ translate_segment_access(&(info->segments.ss), &access);
- // tmpReg = 0x4100;
- tmpReg = 0xffffffff;
- if (VMCS_WRITE(EXCEPTION_BITMAP, &tmpReg) != VMX_SUCCESS) {
- PrintInfo("Bitmap error\n");
- }
+ ret |= check_vmcs_write(VMCS_GUEST_SS_BASE, info->segments.ss.base);
+ ret |= check_vmcs_write(VMCS_GUEST_SS_SELECTOR, info->segments.ss.selector);
+ ret |= check_vmcs_write(VMCS_GUEST_SS_LIMIT, info->segments.ss.limit);
+ ret |= check_vmcs_write(VMCS_GUEST_SS_ACCESS, access.value);
- ConfigureExits(vm);
+ /* DS Segment */
+ translate_segment_access(&(info->segments.ds), &access);
- PrintTrace("VMCS_LAUNCH\n");
+ ret |= check_vmcs_write(VMCS_GUEST_DS_BASE, info->segments.ds.base);
+ ret |= check_vmcs_write(VMCS_GUEST_DS_SELECTOR, info->segments.ds.selector);
+ ret |= check_vmcs_write(VMCS_GUEST_DS_LIMIT, info->segments.ds.limit);
+ ret |= check_vmcs_write(VMCS_GUEST_DS_ACCESS, access.value);
- vm->state=VM_VMXASSIST_STARTUP;
- vmm_ret = SAFE_VM_LAUNCH();
+ /* ES Segment */
+ translate_segment_access(&(info->segments.es), &access);
- PrintTrace("VMM error %d\n", vmm_ret);
+ ret |= check_vmcs_write(VMCS_GUEST_ES_BASE, info->segments.es.base);
+ ret |= check_vmcs_write(VMCS_GUEST_ES_SELECTOR, info->segments.es.selector);
+ ret |= check_vmcs_write(VMCS_GUEST_ES_LIMIT, info->segments.es.limit);
+ ret |= check_vmcs_write(VMCS_GUEST_ES_ACCESS, access.value);
- return vmm_ret;
-}
+ /* FS Segment */
+ translate_segment_access(&(info->segments.fs), &access);
+ ret |= check_vmcs_write(VMCS_GUEST_FS_BASE, info->segments.fs.base);
+ ret |= check_vmcs_write(VMCS_GUEST_FS_SELECTOR, info->segments.fs.selector);
+ ret |= check_vmcs_write(VMCS_GUEST_FS_LIMIT, info->segments.fs.limit);
+ ret |= check_vmcs_write(VMCS_GUEST_FS_ACCESS, access.value);
+ /* GS Segment */
+ translate_segment_access(&(info->segments.gs), &access);
-
-int VMLaunch(struct VMDescriptor *vm)
-{
- VMCS * vmcs = CreateVMCS();
- int rc;
+ ret |= check_vmcs_write(VMCS_GUEST_GS_BASE, info->segments.gs.base);
+ ret |= check_vmcs_write(VMCS_GUEST_GS_SELECTOR, info->segments.gs.selector);
+ ret |= check_vmcs_write(VMCS_GUEST_GS_LIMIT, info->segments.gs.limit);
+ ret |= check_vmcs_write(VMCS_GUEST_GS_ACCESS, access.value);
+
+ /* LDTR segment */
+ translate_segment_access(&(info->segments.ldtr), &access);
+
+ ret |= check_vmcs_write(VMCS_GUEST_LDTR_BASE, info->segments.ldtr.base);
+ ret |= check_vmcs_write(VMCS_GUEST_LDTR_SELECTOR, info->segments.ldtr.selector);
+ ret |= check_vmcs_write(VMCS_GUEST_LDTR_LIMIT, info->segments.ldtr.limit);
+ ret |= check_vmcs_write(VMCS_GUEST_LDTR_ACCESS, access.value);
+
+ /* TR Segment */
+ translate_segment_access(&(info->segments.tr), &access);
- ullong_t vmcs_ptr = (ullong_t)((uint_t)vmcs);
- uint_t top = (vmcs_ptr >> 32) & 0xffffffff;
- uint_t bottom = (vmcs_ptr) & 0xffffffff;
+ ret |= check_vmcs_write(VMCS_GUEST_TR_BASE, info->segments.tr.base);
+ ret |= check_vmcs_write(VMCS_GUEST_TR_SELECTOR, info->segments.ldtr.selector);
+ ret |= check_vmcs_write(VMCS_GUEST_TR_LIMIT, info->segments.tr.limit);
+ ret |= check_vmcs_write(VMCS_GUEST_TR_ACCESS, access.value);
- theVM.vmcsregion = vmcs;
- theVM.descriptor = *vm;
+ /* GDTR Segment */
- PrintTrace("vmcs_ptr_top=%x vmcs_ptr_bottom=%x, eip=%x\n", top, bottom, vm->entry_ip);
- rc = MyLaunch(&theVM); // vmcs_ptr, vm->entry_ip, vm->exit_eip, vm->guest_esp);
- PrintTrace("Returned from MyLaunch();\n");
- return rc;
+ ret |= check_vmcs_write(VMCS_GUEST_GDTR_BASE, info->segments.gdtr.base);
+ ret |= check_vmcs_write(VMCS_GUEST_GDTR_LIMIT, info->segments.gdtr.limit);
+
+ /* IDTR Segment*/
+ ret |= check_vmcs_write(VMCS_GUEST_IDTR_BASE, info->segments.idtr.base);
+ ret |= check_vmcs_write(VMCS_GUEST_IDTR_LIMIT, info->segments.idtr.limit);
+
+ return ret;
}
+static void setup_v8086_mode_for_boot(struct guest_info * vm_info)
+{
+ ((struct vmx_data *)vm_info->vmm_data)->state = VMXASSIST_V8086_BIOS;
+ ((struct rflags *)&(vm_info->ctrl_regs.rflags))->vm = 1;
+ ((struct rflags *)&(vm_info->ctrl_regs.rflags))->iopl = 3;
+
+
+ vm_info->rip = 0xd0000;
+ vm_info->vm_regs.rsp = 0x80000;
+
+ vm_info->segments.cs.selector = 0xf000;
+ vm_info->segments.cs.base = 0xf000 << 4;
+ vm_info->segments.cs.limit = 0xffff;
+ vm_info->segments.cs.type = 3;
+ vm_info->segments.cs.system = 1;
+ vm_info->segments.cs.dpl = 3;
+ vm_info->segments.cs.present = 1;
+ vm_info->segments.cs.granularity = 0;
+
+ int i = 0;
+ struct v3_segment * seg_ptr = (struct v3_segment *)&(vm_info->segments);
+
+ /* Set values for selectors ds through ss */
+ for(i = 1; i < 6 ; i++) {
+ seg_ptr[i].selector = 0x0000;
+ seg_ptr[i].base = 0x00000;
+ seg_ptr[i].type = 3;
+ seg_ptr[i].system = 1;
+ seg_ptr[i].dpl = 3;
+ seg_ptr[i].present = 1;
+ seg_ptr[i].granularity = 0;
+ }
+ for(i = 6; i < 10; i++) {
+ seg_ptr[i].base = 0x0;
+ seg_ptr[i].limit = 0xffff;
+ }
-//
-//
-// END CRUFT
-//
-//
+ vm_info->segments.ldtr.selector = 0x0;
+ vm_info->segments.ldtr.type = 2;
+ vm_info->segments.ldtr.system = 0;
+ vm_info->segments.ldtr.present = 1;
+ vm_info->segments.ldtr.granularity = 0;
+
+ vm_info->segments.tr.selector = 0x0;
+ vm_info->segments.tr.type = 3;
+ vm_info->segments.tr.system = 0;
+ vm_info->segments.tr.present = 1;
+ vm_info->segments.tr.granularity = 0;
+}
-// For the 32 bit reserved bit fields
-// MB1s are in the low 32 bits, MBZs are in the high 32 bits of the MSR
-static uint32_t sanitize_bits1(uint32_t msr_num, uint32_t val) {
- v3_msr_t mask_msr;
+static addr_t allocate_vmcs()
+{
+ reg_ex_t msr;
+ PrintDebug("Allocating page\n");
+ struct vmcs_data * vmcs_page = (struct vmcs_data *)V3_VAddr(V3_AllocPages(1));
- PrintDebug("sanitize_bits1 (MSR:%x)\n", msr_num);
- v3_get_msr(msr_num, &mask_msr.hi, &mask_msr.lo);
+ memset(vmcs_page, 0, 4096);
- PrintDebug("MSR %x = %x : %x \n", msr_num, msr.hi, msr.lo);
+ v3_get_msr(VMX_BASIC_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
+
+ vmcs_page->revision = ((struct vmx_basic_msr*)&msr)->revision;
+ PrintDebug("VMX Revision: 0x%x\n",vmcs_page->revision);
- val &= mask_msr.lo;
- val &= mask_msr.hi;
-
- return val;
+ return (addr_t)V3_PAddr((void *)vmcs_page);
}
-static addr_t sanitize_bits2(uint32_t msr_num0, uint32_t msr_num1, addr_t val) {
- v3_msr_t msr0, msr1;
- addr_t msr0_val, msr1_val;
+static int init_vmcs_bios(struct guest_info * vm_info)
+{
- PrintDebug("sanitize_bits2 (MSR0=%x, MSR1=%x)\n", msr_num0, msr_num1);
+ setup_v8086_mode_for_boot(vm_info);
- v3_get_msr(msr_num0, &msr0.hi, &msr0.lo);
- v3_get_msr(msr_num1, &msr1.hi, &msr1.lo);
-
- // This generates a mask that is the natural bit width of the CPU
- msr0_val = msr0.value;
- msr1_val = msr1.value;
+ // TODO: Fix vmcs fields so they're 32-bit
+ struct vmx_data * vmx_data = (struct vmx_data *)vm_info->vmm_data;
+ int vmx_ret = 0;
+
+ PrintDebug("Clearing VMCS: %p\n",(void*)vmx_data->vmcs_ptr_phys);
+ vmx_ret = vmcs_clear(vmx_data->vmcs_ptr_phys);
- PrintDebug("MSR %x = %p, %x = %p \n", msr_num0, msr0_val, msr_num1, msr1_val);
+ if (vmx_ret != VMX_SUCCESS) {
+ PrintError("VMCLEAR failed\n");
+ return -1;
+ }
- val &= msr0_val;
- val &= msr1_val;
+ PrintDebug("Loading VMCS\n");
+ vmx_ret = vmcs_load(vmx_data->vmcs_ptr_phys);
- return val;
-}
+ if (vmx_ret != VMX_SUCCESS) {
+ PrintError("VMPTRLD failed\n");
+ return -1;
+ }
+ struct v3_msr tmp_msr;
+ /* Write VMX Control Fields */
+ v3_get_msr(VMX_PINBASED_CTLS_MSR,&(tmp_msr.hi),&(tmp_msr.lo));
+ /* Add NMI exiting */
+ tmp_msr.lo |= NMI_EXIT;
+ check_vmcs_write(VMCS_PIN_CTRLS, tmp_msr.lo);
-static vmcs_t * allocate_vmcs() {
- reg_ex_t msr;
- vmcs_t * vmcs_page = (vmcs_t *)V3_VAddr(V3_AllocPages(1));
+ v3_get_msr(VMX_PROCBASED_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ /* Add unconditional I/O */
+ tmp_msr.lo |= UNCOND_IO_EXIT;
+ check_vmcs_write(VMCS_PROC_CTRLS, tmp_msr.lo);
- memset(vmcb_page, 0, 4096);
+ v3_get_msr(VMX_EXIT_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ tmp_msr.lo |= HOST_ADDR_SPACE_SIZE;
+ check_vmcs_write(VMCS_EXIT_CTRLS, tmp_msr.lo);
- v3_get_msr(VMX_BASIC_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
+
+ v3_get_msr(VMX_ENTRY_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ check_vmcs_write(VMCS_ENTRY_CTRLS, tmp_msr.lo);
+
+
+ check_vmcs_write(VMCS_EXCP_BITMAP, 0xffffffff);
+
+ /* Cache GDTR, IDTR, and TR in host struct */
+ struct {
+ uint16_t selector;
+ addr_t base;
+ } __attribute__((packed)) tmp_seg;
- *(uint32_t *)vmcs_page = ((struct vmx_basic_msr *)msr.val)->revision;
+ addr_t gdtr_base;
+
+ __asm__ __volatile__(
+ "sgdt (%0);"
+ :
+ : "q"(&tmp_seg)
+ : "memory"
+ );
+ gdtr_base = tmp_seg.base;
+ vmx_data->host_state.gdtr.base = gdtr_base;
+
+ __asm__ __volatile__(
+ "sidt (%0);"
+ :
+ : "q"(&tmp_seg)
+ : "memory"
+ );
+ vmx_data->host_state.idtr.base = tmp_seg.base;
+
+ __asm__ __volatile__(
+ "str (%0);"
+ :
+ : "q"(&tmp_seg)
+ : "memory"
+ );
+ vmx_data->host_state.tr.selector = tmp_seg.selector;
+
+ /* The GDTR *index* is bits 3-15 of the selector. */
+ struct tss_descriptor * desc = (struct tss_descriptor *)
+ (gdtr_base + 8*(tmp_seg.selector>>3));
+
+ tmp_seg.base = (
+ (desc->base1) |
+ (desc->base2 << 16) |
+ (desc->base3 << 24) |
+#ifdef __V3_64BIT__
+ ((uint64_t)desc->base4 << 32)
+#else
+ (0)
+#endif
+ );
+
+ vmx_data->host_state.tr.base = tmp_seg.base;
+
+ if(update_vmcs_host_state(vm_info)) {
+ PrintError("Could not write host state\n");
+ return -1;
+ }
- return vmcs_page;
-}
+ // Setup guest state
+ // TODO: This is not 32-bit safe!
+ vmx_ret |= check_vmcs_write(VMCS_GUEST_RIP, vm_info->rip);
+ vmx_ret |= check_vmcs_write(VMCS_GUEST_RSP, vm_info->vm_regs.rsp);
+ vmx_ret |= check_vmcs_write(VMCS_GUEST_CR0, 0x80000021);
+ vmx_ret |= vmcs_write_guest_segments(vm_info);
+ vmx_ret |= check_vmcs_write(VMCS_GUEST_RFLAGS, vm_info->ctrl_regs.rflags);
+ vmx_ret |= check_vmcs_write(VMCS_LINK_PTR, 0xffffffffffffffff);
-static void init_vmcs_bios(vmcs_t * vmcs, struct guest_info * vm_info) {
+ if (vmx_ret != 0) {
+ PrintError("Could not initialize VMCS segments\n");
+ return -1;
+ }
-}
+#define VMXASSIST_START 0x000d0000
+ extern uint8_t vmxassist_start[];
+ extern uint8_t vmxassist_end[];
+ addr_t vmxassist_dst = 0;
+ if(guest_pa_to_host_va(vm_info, VMXASSIST_START, &vmxassist_dst) == -1) {
+ PrintError("Could not find VMXASSIST destination\n");
+ return -1;
+ }
+ memcpy((void*)vmxassist_dst, vmxassist_start, vmxassist_end-vmxassist_start);
+ v3_print_vmcs_host_state();
+ v3_print_vmcs_guest_state();
+ return 0;
+}
static int init_vmx_guest(struct guest_info * info, struct v3_vm_config * config_ptr) {
v3_pre_config_guest(info, config_ptr);
+ struct vmx_data * data = NULL;
+
+ data = (struct vmx_data *)V3_Malloc(sizeof(struct vmx_data));
+
+ PrintDebug("vmx_data pointer: %p\n", (void *)data);
+
PrintDebug("Allocating VMCS\n");
- info->vmm_data = (void *)allocate_vmcs();
+ data->vmcs_ptr_phys = allocate_vmcs();
+
+ PrintDebug("VMCS pointer: %p\n", (void *)(data->vmcs_ptr_phys));
- PrintDebug("Initializing VMCS (addr=%p)\n", (void *)info->vmm_data);
- init_vmcs_bios((vmcs_t *)(info->vmm_data), info);
+ info->vmm_data = data;
- v3_post_config_guest(info, config_ptr);
+ PrintDebug("Initializing VMCS (addr=%p)\n", info->vmm_data);
+
+ if (init_vmcs_bios(info) != 0) {
+ PrintError("Could not initialize VMCS BIOS\n");
+ return -1;
+ }
+
+ //v3_post_config_guest(info, config_ptr);
return 0;
}
+static int start_vmx_guest(struct guest_info* info) {
+ uint32_t error = 0;
+ int ret = 0;
+
+ PrintDebug("Attempting VMLAUNCH\n");
+ ret = v3_vmx_vmlaunch(&(info->vm_regs));
+ if (ret != VMX_SUCCESS) {
+ vmcs_read(VMCS_INSTR_ERR, &error, 4);
+ PrintError("VMLAUNCH failed: %d\n", error);
+
+ v3_print_vmcs_guest_state();
+ v3_print_vmcs_host_state();
+ }
+ PrintDebug("Returned from VMLAUNCH ret=%d(0x%x)\n", ret, ret);
-static int start_svm_guest(struct guest_info *info) {
return -1;
}
int v3_is_vmx_capable() {
- uint_t ret;
v3_msr_t feature_msr;
addr_t eax = 0, ebx = 0, ecx = 0, edx = 0;
- v3_cpuid(CPUID_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
+ v3_cpuid(0x1, &eax, &ebx, &ecx, &edx);
+
+ PrintDebug("ECX: %p\n", (void*)ecx);
if (ecx & CPUID_1_ECX_VTXFLAG) {
- v3_get_msr(IA32_FEATURE_CONTROL_MSR, &(feature_msr.hi), &(feature_msr.lo));
+ v3_get_msr(VMX_FEATURE_CONTROL_MSR, &(feature_msr.hi), &(feature_msr.lo));
- PrintTrace("MSRREGlow: 0x%.8x\n", feature_msr.lo);
+ PrintTrace("MSRREGlow: 0x%.8x\n", feature_msr.lo);
- if ((feature_msr.lo & FEATURE_CONTROL_VALID) != FEATURE_CONTROL_VALID) {
- PrintDebug("VMX is locked -- enable in the BIOS\n");
- return 0;
- }
+ if ((feature_msr.lo & FEATURE_CONTROL_VALID) != FEATURE_CONTROL_VALID) {
+ PrintDebug("VMX is locked -- enable in the BIOS\n");
+ return 0;
+ }
} else {
- PrintDebug("VMX not supported on this cpu\n");
- return 0;
+ PrintDebug("VMX not supported on this cpu\n");
+ return 0;
}
return 1;
-// We set up the global host state that is unlikely to change across processes here
-// Segment Descriptors mainly
-
-struct seg_descriptor {
-
-};
-
-
-static int setup_base_host_state() {
- uint8_t gdt[10];
-
-
-
- // vmwrite(HOST_IDTR_BASE,
-
-
-}
-
-
-
void v3_init_vmx(struct v3_ctrl_ops * vm_ops) {
- v3_msr_t basic_msr;
+ extern v3_cpu_arch_t v3_cpu_type;
- // Setup the host state save area
- void * host_state = V3_AllocPages(1);
+ struct v3_msr tmp_msr;
+ uint64_t ret=0;
- v3_get_msr(VMX_BASIC_MSR, &(basic_msr.hi), &(basic_msr.lo));
+ v3_get_msr(VMX_CR4_FIXED0_MSR,&(tmp_msr.hi),&(tmp_msr.lo));
- *(uint32_t *)host_state = ((struct vmx_basic_msr *)basic_msr.value)->revision;
-
- PrintDebug("VMX revision: 0x%p\n", host_state);
-
__asm__ __volatile__ (
- "movl %%cr4, %%ebx; "
- "orl %%ebx, 0x00002000; "
- "movl %%ebx, %%cr4"
+ "movq %%cr4, %%rbx;"
+ "orq $0x00002000, %%rbx;"
+ "movq %%rbx, %0;"
+ : "=m"(ret)
+ :
+ : "%rbx"
);
-
-
+ if((~ret & tmp_msr.value) == 0) {
+ __asm__ __volatile__ (
+ "movq %0, %%cr4;"
+ :
+ : "q"(ret)
+ );
+ } else {
+ PrintError("Invalid CR4 Settings!\n");
+ return;
+ }
+ __asm__ __volatile__ (
+ "movq %%cr0, %%rbx; "
+ "orq $0x00000020,%%rbx; "
+ "movq %%rbx, %%cr0;"
+ :
+ :
+ : "%rbx"
+ );
+ //
// Should check and return Error here....
- __asm__ __volatile__ (
- "movl %%cr0, %%ebx; "
- "orl %%ebx, 0x00000020; "
- "movl %%ebx, %%cr0"
- );
- if (v3_enable_vmx(host_state) == 0) {
- PrintDebug("VMX Enabled\n");
+ // Setup VMXON Region
+ vmxon_ptr_phys = allocate_vmcs();
+ PrintDebug("VMXON pointer: 0x%p\n", (void*)vmxon_ptr_phys);
+
+ if (v3_enable_vmx(vmxon_ptr_phys) == VMX_SUCCESS) {
+ PrintDebug("VMX Enabled\n");
} else {
- PrintError("VMX initialization failure\n");
- return;
+ PrintError("VMX initialization failure\n");
+ return;
}
if (has_vmx_nested_paging() == 1) {
- v3_cpu_type = V3_VMX_EPT_CPU;
+ v3_cpu_type = V3_VMX_EPT_CPU;
} else {
- v3_cpu_type = V3_VMX_CPU;
+ v3_cpu_type = V3_VMX_CPU;
}
// Setup the VMX specific vmm operations
- vmm_ops->init_guest = &init_vmx_guest;
- vmm_ops->start_guest = &start_vmx_guest;
- vmm_ops->has_nested_paging = &has_vmx_nested_paging;
+ vm_ops->init_guest = &init_vmx_guest;
+ vm_ops->start_guest = &start_vmx_guest;
+ vm_ops->has_nested_paging = &has_vmx_nested_paging;
}
+
