palacios/vmm_lock.o \
palacios/vmx.o \
palacios/vmcs.o \
+ palacios/vmx_handler.o \
palacios/vmx_lowlevel.o \
+ palacios/vmxassist.o \
$(OBJ_FILES)
# Extra C flags for the VMM objects
$(VMM_OBJS) :: EXTRA_CFLAGS = \
- $(JRLDEBUG) $(CFLAGS)\
+ $(JRLDEBUG) $(CFLAGS) -DVMXASSIST_PATH="\"../build/vmxassist\"" \
vgabios_link:
ln -s -f ../src/vmboot/vgabios/VGABIOS-lgpl-latest.bin vgabios
+vmxassist_link:
+ ln -s -f ../src/vmboot/vmxassist/vmxassist.bin vmxassist
+
-force_payload: rombios_link vgabios_link
+force_payload: rombios_link vgabios_link vmxassist_link
../scripts/make_payload.pl payload_layout.txt vm_kernel
inter1: force_payload
int v3_vmcs_get_field_len(vmcs_field_t field);
const char* v3_vmcs_field_to_str(vmcs_field_t field);
void v3_print_vmcs_guest_state();
+void v3_print_vmcs_host_state();
/* VMCS Exit QUALIFICATIONs */
} vmx_state_t;
struct tss_descriptor {
- uint16_t limit1;
- uint16_t base1;
- uint_t base2 : 8;
- /* In 32 bit type follows the form 10B1b, where B is the busy flag */
- uint_t type : 4;
- uint_t zero1 : 1;
- uint_t dpl : 2;
- uint_t present : 1;
- uint_t limit2 : 4;
- uint_t available : 1;
- uint_t zero2 : 1;
- uint_t zero3 : 1;
- uint_t granularity : 1;
- uint_t base3 : 8;
+ union {
+ ulong_t value;
+ struct {
+ uint16_t limit1;
+ uint16_t base1;
+ uint_t base2 : 8;
+ /* In IA32, type follows the form 10B1b, where B is the busy flag */
+ uint_t type : 4;
+ uint_t zero1 : 1;
+ uint_t dpl : 2;
+ uint_t present : 1;
+ uint_t limit2 : 4;
+ uint_t available : 1;
+ uint_t zero2 : 1;
+ uint_t zero3 : 1;
+ uint_t granularity : 1;
+ uint_t base3 : 8;
#ifdef __V3_64BIT__
- uint32_t base4;
- uint_t rsvd1 : 8;
- uint_t zero4 : 5;
- uint_t rsvd2 : 19;
+ uint32_t base4;
+ uint_t rsvd1 : 8;
+ uint_t zero4 : 5;
+ uint_t rsvd2 : 19;
#endif
+ } __attribute__((packed));
+ } __attribute__((packed));
}__attribute__((packed));
struct vmcs_host_state {
#ifdef __V3VEE__
+#include <palacios/vm_guest.h>
/******************************************/
/* VMX Intercept Exit Codes */
#define VMEXIT_ENTRY_FAILURE_MACHINE_CHECK 41
#define VMEXIT_TPR_BELOW_THRESHOLD 43
+int v3_handle_vmx_exit(struct guest_info * info);
#endif
/* Opcode definitions for all the VM instructions */
-#define VMCLEAR_OPCODE ".byte 0x66,0xf,0x67;" /* reg=/6 */
+#define VMCLEAR_OPCODE ".byte 0x66,0xf,0xc7;" /* reg=/6 */
#define VMRESUME_OPCODE ".byte 0x0f,0x01,0xc3;"
#define VMPTRLD_OPCODE ".byte 0x0f,0xc7;" /* reg=/6 */
#define VMPTRST_OPCODE ".byte 0x0f,0xc7;" /* reg=/7 */
}
}
-// No vmcall necessary - is only executed by the guest
-
static inline int vmcs_clear(addr_t vmcs_ptr) {
- uint64_t vmcs_ptr_64 = (uint64_t)vmcs_ptr;
+ uint64_t vmcs_ptr_64 __attribute__ ((aligned(8))) = (uint64_t)vmcs_ptr;
uint8_t ret_valid = 0;
uint8_t ret_invalid = 0;
return VMX_SUCCESS;
}
-
-static inline int vmcs_resume() {
- uint8_t ret_valid = 0;
- uint8_t ret_invalid = 0;
-
- __asm__ __volatile__ (
- VMRESUME_OPCODE
- "seteb %0;"
- "setnaeb %1;"
- : "=q"(ret_valid), "=q"(ret_invalid)
- : "0"(ret_valid), "1"(ret_invalid)
- : "memory");
-
- CHECK_VMXFAIL(ret_valid, ret_invalid);
-
- return VMX_SUCCESS;
-}
-
-
static inline int vmcs_load(addr_t vmcs_ptr) {
uint64_t vmcs_ptr_64 = (uint64_t)vmcs_ptr;
uint8_t ret_valid = 0;
PrintDebug("\n");
}
-/*
-void print_debug_vmcs_load_guest() {
- const int wordsize = sizeof(addr_t);
- uint64_t temp;
- struct vmcs_segment_access tmp_seg;
-
- PrintDebug("\n====== Loading Guest State ======\n");
- PRINT_VMREAD("Guest CR0: %x\n", GUEST_CR0, wordsize);
- PRINT_VMREAD("Guest CR3: %x\n", GUEST_CR3, wordsize);
- PRINT_VMREAD("Guest CR4: %x\n", GUEST_CR4, wordsize);
- PRINT_VMREAD("Guest DR7: %x\n", GUEST_DR7, wordsize);
-
- READ_VMCS_SEG(&tmp_seg,CS,wordsize);
- print_vmcs_segment("CS", &tmp_seg);
-
- READ_VMCS_SEG(&tmp_seg,SS,wordsize);
- print_vmcs_segment("SS", &tmp_seg);
-
- READ_VMCS_SEG(&tmp,DS,wordsize);
- print_vmcs_segment("DS", &tmp_seg);
-
- READ_VMCS_SEG(&tmp_seg,ES,wordsize);
- print_vmcs_segment("ES", &tmp_seg);
-
- READ_VMCS_SEG(&tmp_seg,FS,wordsize);
- print_vmcs_segment("FS", &tmp_seg);
-
- READ_VMCS_SEG(&tmp_seg,GS,wordsize);
- print_vmcs_segment("GS", &tmp_seg);
-
- READ_VMCS_SEG(&tmp_seg,TR,wordsize);
- print_vmcs_segment("TR", &tmp_seg);
+void v3_print_vmcs_host_state()
+{
+ PrintDebug("=== Control Fields===\n");
+ print_vmcs_field(VMCS_PIN_CTRLS);
+ print_vmcs_field(VMCS_PROC_CTRLS);
+ print_vmcs_field(VMCS_EXIT_CTRLS);
+ print_vmcs_field(VMCS_ENTRY_CTRLS);
+ print_vmcs_field(VMCS_EXCP_BITMAP);
- READ_VMCS_SEG(&tmp_seg,LDTR,wordsize);
- print_vmcs_segment("LDTR", &tmp_seg);
+ PrintDebug("\n");
+ print_vmcs_field(VMCS_HOST_CR0);
+ print_vmcs_field(VMCS_HOST_CR3);
+ print_vmcs_field(VMCS_HOST_CR4);
+ print_vmcs_field(VMCS_HOST_RSP);
+ print_vmcs_field(VMCS_HOST_RIP);
+ print_vmcs_field(VMCS_HOST_SYSENTER_CS);
+ print_vmcs_field(VMCS_HOST_SYSENTER_ESP);
+ print_vmcs_field(VMCS_HOST_SYSENTER_EIP);
- PrintDebug("\n==GDTR==\n");
- PRINT_VMREAD("GDTR Base: %x\n", GUEST_GDTR_BASE, wordsize);
- PRINT_VMREAD("GDTR Limit: %x\n", GUEST_GDTR_LIMIT, 32);
- PrintDebug("====\n");
-
- PrintDebug("\n==LDTR==\n");
- PRINT_VMREAD("LDTR Base: %x\n", GUEST_LDTR_BASE, wordsize);
- PRINT_VMREAD("LDTR Limit: %x\n", GUEST_LDTR_LIMIT, 32);
- PrintDebug("=====\n");
-
- PRINT_VMREAD("Guest RSP: %x\n", GUEST_RSP, wordsize);
- PRINT_VMREAD("Guest RIP: %x\n", GUEST_RIP, wordsize);
- PRINT_VMREAD("Guest RFLAGS: %x\n", GUEST_RFLAGS, wordsize);
- PRINT_VMREAD("Guest Activity state: %x\n", GUEST_ACTIVITY_STATE, 32);
- PRINT_VMREAD("Guest Interruptibility state: %x\n", GUEST_INT_STATE, 32);
- PRINT_VMREAD("Guest pending debug: %x\n", GUEST_PENDING_DEBUG_EXCS, wordsize);
-
- PRINT_VMREAD("IA32_DEBUGCTL: %x\n", GUEST_IA32_DEBUGCTL, 64);
- PRINT_VMREAD("IA32_SYSENTER_CS: %x\n", GUEST_IA32_SYSENTER_CS, 32);
- PRINT_VMREAD("IA32_SYSTENTER_ESP: %x\n", GUEST_IA32_SYSENTER_ESP, wordsize);
- PRINT_VMREAD("IA32_SYSTENTER_EIP: %x\n", GUEST_IA32_SYSENTER_EIP, wordsize);
- PRINT_VMREAD("IA32_PERF_GLOBAL_CTRL: %x\n", GUEST_IA32_PERF_GLOBAL_CTRL, wordsize);
- PRINT_VMREAD("VMCS Link Ptr: %x\n", VMCS_LINK_PTR, 64);
- // TODO: Maybe add VMX preemption timer and PDTE (Intel 20-8 Vol. 3b)
-}
+ PrintDebug("\n=== Segment Registers===\n");
+ PrintDebug("Selector:\n");
+ print_vmcs_field(VMCS_HOST_CS_SELECTOR);
+ print_vmcs_field(VMCS_HOST_SS_SELECTOR);
+ print_vmcs_field(VMCS_HOST_DS_SELECTOR);
+ print_vmcs_field(VMCS_HOST_ES_SELECTOR);
+ print_vmcs_field(VMCS_HOST_FS_SELECTOR);
+ print_vmcs_field(VMCS_HOST_GS_SELECTOR);
+ print_vmcs_field(VMCS_HOST_TR_SELECTOR);
+
+ PrintDebug("\nBase:\n");
+ print_vmcs_field(VMCS_HOST_FS_BASE);
+ print_vmcs_field(VMCS_HOST_GS_BASE);
+ print_vmcs_field(VMCS_HOST_TR_BASE);
+ print_vmcs_field(VMCS_HOST_GDTR_BASE);
+ print_vmcs_field(VMCS_HOST_IDTR_BASE);
-void print_debug_load_host() {
- const int wordsize = sizeof(addr_t);
- uint64_t temp;
- vmcs_segment tmp_seg;
-
- PrintDebug("\n====== Host State ========\n");
- PRINT_VMREAD("Host CR0: %x\n", HOST_CR0, wordsize);
- PRINT_VMREAD("Host CR3: %x\n", HOST_CR3, wordsize);
- PRINT_VMREAD("Host CR4: %x\n", HOST_CR4, wordsize);
- PRINT_VMREAD("Host RSP: %x\n", HOST_RSP, wordsize);
- PRINT_VMREAD("Host RIP: %x\n", HOST_RIP, wordsize);
- PRINT_VMREAD("IA32_SYSENTER_CS: %x\n", HOST_IA32_SYSENTER_CS, 32);
- PRINT_VMREAD("IA32_SYSENTER_ESP: %x\n", HOST_IA32_SYSENTER_ESP, wordsize);
- PRINT_VMREAD("IA32_SYSENTER_EIP: %x\n", HOST_IA32_SYSENTER_EIP, wordsize);
-
- PRINT_VMREAD("Host CS Selector: %x\n", HOST_CS_SELECTOR, 16);
- PRINT_VMREAD("Host SS Selector: %x\n", HOST_SS_SELECTOR, 16);
- PRINT_VMREAD("Host DS Selector: %x\n", HOST_DS_SELECTOR, 16);
- PRINT_VMREAD("Host ES Selector: %x\n", HOST_ES_SELECTOR, 16);
- PRINT_VMREAD("Host FS Selector: %x\n", HOST_FS_SELECTOR, 16);
- PRINT_VMREAD("Host GS Selector: %x\n", HOST_GS_SELECTOR, 16);
- PRINT_VMREAD("Host TR Selector: %x\n", HOST_TR_SELECTOR, 16);
-
- PRINT_VMREAD("Host FS Base: %x\n", HOST_FS_BASE, wordsize);
- PRINT_VMREAD("Host GS Base: %x\n", HOST_GS_BASE, wordsize);
- PRINT_VMREAD("Host TR Base: %x\n", HOST_TR_BASE, wordsize);
- PRINT_VMREAD("Host GDTR Base: %x\n", HOST_GDTR_BASE, wordsize);
- PRINT_VMREAD("Host IDTR Base: %x\n", HOSE_IDTR_BASE, wordsize);
+ PrintDebug("\n");
}
-void print_vmcs_segment(char * name, vmcs_segment* seg)
-{
- PrintDebug("\n==VMCS %s Segment==\n",name);
- PrintDebug("\tSelector: %x\n", seg->selector);
- PrintDebug("\tBase Address: %x\n", seg->baseAddr);
- PrintDebug("\tLimit: %x\n", seg->limit);
- PrintDebug("\tAccess: %x\n", seg->access);
-}*/
-
/*
* Returns the field length in bytes
*/
#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
-//
-//
-
-#if 0
-
-#include <palacios/vmm_util.h>
-#include <palacios/vmm_string.h>
-#include <palacios/vmm_ctrl_regs.h>
-
-
-
-extern int Launch_VM(ullong_t vmcsPtr, uint_t eip);
-
-#define NUMPORTS 65536
-
-
-#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 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 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;
-
-
-
-
-
-extern uint_t VMCS_LAUNCH();
-extern uint_t Init_VMCS_HostState();
-extern uint_t Init_VMCS_GuestState();
-
-
-
-
-extern int Get_CR2();
-extern int vmRunning;
-
-
-
-
-
-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;
-
-
-
- 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;
- }
-}
-
-
-
-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));
-
-
-/* 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();
-
-int MyLaunch(struct VM *vm)
+static int inline check_vmcs_write(vmcs_field_t field, addr_t val)
{
- 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;
- }
-
- // PrintTrace("HOST_RIP: %x (%u)\n", exit_eip, exit_eip);
- VMCS_WRITE(HOST_RIP, &exit_eip);
-
- /* Guest state */
- PrintTrace("Setting up guest state\n");
- PrintTrace("GUEST_RIP: %x (%u)\n", entry_eip, entry_eip);
- VMCS_WRITE(GUEST_RIP, &entry_eip);
-
- 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();
-
- PrintTrace("InitGuestState returned\n");
+ int ret = 0;
+ ret = vmcs_write(field,val);
- 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");
+ if (ret != VMX_SUCCESS) {
+ PrintError("VMWRITE error on %s!: %d\n", v3_vmcs_field_to_str(field), ret);
+ return 1;
}
- return ret;
- }
- PrintTrace("GUEST_RSP: %x (%u)\n", guest_esp, (uint_t)guest_esp);
- VMCS_WRITE(GUEST_RSP, &guest_esp);
-
- // tmpReg = 0x4100;
- tmpReg = 0xffffffff;
- if (VMCS_WRITE(EXCEPTION_BITMAP, &tmpReg) != VMX_SUCCESS) {
- PrintInfo("Bitmap error\n");
- }
-
- ConfigureExits(vm);
-
- PrintTrace("VMCS_LAUNCH\n");
-
- vm->state=VM_VMXASSIST_STARTUP;
-
- vmm_ret = SAFE_VM_LAUNCH();
-
- PrintTrace("VMM error %d\n", vmm_ret);
-
- return vmm_ret;
-}
-
-
-
-
-int VMLaunch(struct VMDescriptor *vm)
-{
- VMCS * vmcs = CreateVMCS();
- int rc;
-
- ullong_t vmcs_ptr = (ullong_t)((uint_t)vmcs);
- uint_t top = (vmcs_ptr >> 32) & 0xffffffff;
- uint_t bottom = (vmcs_ptr) & 0xffffffff;
- theVM.vmcsregion = vmcs;
- theVM.descriptor = *vm;
-
- 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;
+ return 0;
}
-
-
-
-//
-//
-// END CRUFT
-//
-//
-
-#endif
-
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;
: "=q"(tmp)
:
);
- vmcs_write(VMCS_HOST_CR0, tmp);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_CR0, tmp);
__asm__ __volatile__ ( "movq %%cr3, %0; "
: "=q"(tmp)
:
);
- vmcs_write(VMCS_HOST_CR3, tmp);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_CR3, tmp);
__asm__ __volatile__ ( "movq %%cr4, %0; "
: "=q"(tmp)
:
);
- vmcs_write(VMCS_HOST_CR4, tmp);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_CR4, tmp);
- vmcs_write(VMCS_HOST_GDTR_BASE, arch_data->host_state.gdtr.base);
- vmcs_write(VMCS_HOST_IDTR_BASE, arch_data->host_state.idtr.base);
- vmcs_write(VMCS_HOST_TR_BASE, arch_data->host_state.tr.base);
+ 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);
#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));
- vmcs_write(VMCS_HOST_FS_BASE, tmp_msr.value);
+ 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));
- vmcs_write(VMCS_HOST_GS_BASE, tmp_msr.value);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_GS_BASE, tmp_msr.value);
: "=q"(tmp)
:
);
- vmcs_write(VMCS_HOST_CS_SELECTOR, tmp);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_CS_SELECTOR, tmp);
__asm__ __volatile__ ( "movq %%ss, %0; "
: "=q"(tmp)
:
);
- vmcs_write(VMCS_HOST_SS_SELECTOR, tmp);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_SS_SELECTOR, tmp);
__asm__ __volatile__ ( "movq %%ds, %0; "
: "=q"(tmp)
:
);
- vmcs_write(VMCS_HOST_DS_SELECTOR, tmp);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_DS_SELECTOR, tmp);
__asm__ __volatile__ ( "movq %%es, %0; "
: "=q"(tmp)
:
);
- vmcs_write(VMCS_HOST_ES_SELECTOR, tmp);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_ES_SELECTOR, tmp);
__asm__ __volatile__ ( "movq %%fs, %0; "
: "=q"(tmp)
:
);
- vmcs_write(VMCS_HOST_FS_SELECTOR, tmp);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_FS_SELECTOR, tmp);
__asm__ __volatile__ ( "movq %%gs, %0; "
: "=q"(tmp)
:
);
- vmcs_write(VMCS_HOST_GS_SELECTOR, tmp);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_GS_SELECTOR, tmp);
- vmcs_write(VMCS_HOST_TR_SELECTOR, arch_data->host_state.tr.selector);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_TR_SELECTOR, arch_data->host_state.tr.selector);
#define SYSENTER_CS_MSR 0x00000174
// SYSENTER CS MSR
v3_get_msr(SYSENTER_CS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_HOST_SYSENTER_CS, tmp_msr.value);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_SYSENTER_CS, tmp_msr.lo);
// SYSENTER_ESP MSR
v3_get_msr(SYSENTER_ESP_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_HOST_SYSENTER_ESP, tmp_msr.value);
+ 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));
- vmcs_write(VMCS_HOST_SYSENTER_EIP, tmp_msr.value);
+ vmx_ret |= check_vmcs_write(VMCS_HOST_SYSENTER_EIP, tmp_msr.value);
-
-
- return 0;
+ return vmx_ret;
}
-static addr_t vmxon_ptr_phys;
-extern int v3_vmx_exit_handler();
-extern int v3_vmx_vmlaunch();
#if 0
PrintDebug("MSR %x = %x : %x \n", msr_num, mask_msr.hi, mask_msr.lo);
- val &= mask_msr.lo;
- val &= mask_msr.hi;
+ val |= mask_msr.lo;
+ val |= mask_msr.hi;
return val;
}
PrintDebug("MSR %x = %p, %x = %p \n", msr_num0, (void*)msr0_val, msr_num1, (void*)msr1_val);
- val &= msr0_val;
- val &= msr1_val;
+ val |= msr0_val;
+ val |= msr1_val;
return val;
}
#endif
-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;
-}
-
static void inline translate_segment_access(struct v3_segment * v3_seg,
struct vmcs_segment_access * access)
/* CS Segment */
translate_segment_access(&(info->segments.cs), &access);
- 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);
+ 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);
/* SS Segment */
translate_segment_access(&(info->segments.ss), &access);
- 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);
+ 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);
/* DS Segment */
translate_segment_access(&(info->segments.ds), &access);
- 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);
+ 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);
/* ES Segment */
translate_segment_access(&(info->segments.es), &access);
- 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);
+ 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);
/* 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);
+ 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);
- 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);
+ 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);
+ 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);
- 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);
+ 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);
/* GDTR Segment */
- ret &= check_vmcs_write(VMCS_GUEST_GDTR_BASE, info->segments.gdtr.base);
- ret &= check_vmcs_write(VMCS_GUEST_GDTR_LIMIT, info->segments.gdtr.limit);
+ 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);
+ 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;
}
((struct rflags *)&(vm_info->ctrl_regs.rflags))->iopl = 3;
- vm_info->rip = 0xfff0;
+ vm_info->rip = 0xd0000;
+ vm_info->vm_regs.rsp = 0x80000;
vm_info->segments.cs.selector = 0xf000;
vm_info->segments.cs.base = 0xf000 << 4;
}
-
static int init_vmcs_bios(struct guest_info * vm_info)
{
// TODO: Fix vmcs fields so they're 32-bit
struct vmx_data * vmx_data = (struct vmx_data *)vm_info->vmm_data;
- int vmx_ret;
+ int vmx_ret = 0;
- // Have to do a whole lot of flag setting here
- PrintDebug("Clearing VMCS\n");
+ PrintDebug("Clearing VMCS: %p\n",(void*)vmx_data->vmcs_ptr_phys);
vmx_ret = vmcs_clear(vmx_data->vmcs_ptr_phys);
if (vmx_ret != VMX_SUCCESS) {
/* Write VMX Control Fields */
v3_get_msr(VMX_PINBASED_CTLS_MSR,&(tmp_msr.hi),&(tmp_msr.lo));
- vmcs_write(VMCS_PIN_CTRLS, tmp_msr.lo);
+ /* Add NMI exiting */
+ tmp_msr.lo |= NMI_EXIT;
+ check_vmcs_write(VMCS_PIN_CTRLS, tmp_msr.lo);
v3_get_msr(VMX_PROCBASED_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_PROC_CTRLS, tmp_msr.lo);
+ /* Add unconditional I/O */
+ tmp_msr.lo |= UNCOND_IO_EXIT;
+ check_vmcs_write(VMCS_PROC_CTRLS, tmp_msr.lo);
v3_get_msr(VMX_EXIT_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_EXIT_CTRLS, tmp_msr.lo);
+ tmp_msr.lo |= HOST_ADDR_SPACE_SIZE;
+ check_vmcs_write(VMCS_EXIT_CTRLS, tmp_msr.lo);
+
v3_get_msr(VMX_ENTRY_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_ENTRY_CTRLS, 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 {
: "q"(&tmp_seg)
: "memory"
);
- vmx_data->host_state.gdtr.base = gdtr_base = tmp_seg.base;
+ gdtr_base = tmp_seg.base;
+ vmx_data->host_state.gdtr.base = gdtr_base;
__asm__ __volatile__(
"sidt (%0);"
);
vmx_data->host_state.tr.selector = tmp_seg.selector;
- struct tss_descriptor desc = ((struct tss_descriptor *)gdtr_base)[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) |
+ (desc->base1) |
+ (desc->base2 << 16) |
+ (desc->base3 << 24) |
#ifdef __V3_64BIT__
- ((uint64_t)desc.base4 << 32)
+ ((uint64_t)desc->base4 << 32)
#else
(0)
#endif
vmx_data->host_state.tr.base = tmp_seg.base;
- update_vmcs_host_state(vm_info);
- vmcs_write(VMCS_HOST_RIP, (addr_t)&v3_vmx_exit_handler);
+ if(update_vmcs_host_state(vm_info)) {
+ PrintError("Could not write host state\n");
+ return -1;
+ }
// 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_CR0, 0x60000010);
+ 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 |= 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);
+ vmx_ret |= check_vmcs_write(VMCS_GUEST_RFLAGS, vm_info->ctrl_regs.rflags);
+ vmx_ret |= check_vmcs_write(VMCS_LINK_PTR, 0xffffffffffffffff);
if (vmx_ret != 0) {
PrintError("Could not initialize VMCS segments\n");
return -1;
}
- v3_print_vmcs_guest_state();
- return 0;
-}
+#define VMXASSIST_START 0x000d0000
+ extern uint8_t vmxassist_start[];
+ extern uint8_t vmxassist_end[];
-int v3_vmx_handle_exit()
-{
- PrintDebug("Exit taken!\n");
+ 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) {
- PrintDebug("Entering init_vmx_guest\n");
v3_pre_config_guest(info, config_ptr);
struct vmx_data * data = NULL;
return -1;
}
- //v3_post_config_guest(info, config_ptr);
+ //v3_post_config_guest(info, config_ptr);
return 0;
}
PrintDebug("Attempting VMLAUNCH\n");
- ret = v3_vmx_vmlaunch();
-
- PrintDebug("Returned from VMLAUNCH\n");
-
- vmcs_read(VMCS_INSTR_ERR, &error, 4);
-
+ 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);
return -1;
}
//
// Should check and return Error here....
+
// Setup VMXON Region
vmxon_ptr_phys = allocate_vmcs();
PrintDebug("VMXON pointer: 0x%p\n", (void*)vmxon_ptr_phys);
vm_ops->has_nested_paging = &has_vmx_nested_paging;
}
+
* redistribute, and modify it as specified in the file "V3VEE_LICENSE".
*/
-static int PanicUnhandledVMExit(struct VM *vm)
-{
- PrintInfo("Panicking due to VMExit with reason %u\n", vm->vmcs.exitInfoFields.reason);
- PrintTrace("Panicking due to VMExit with reason %u\n", vm->vmcs.exitInfoFields.reason);
- PrintTrace_VMCS_ALL();
- PrintTrace_VMX_Regs(&(vm->registers));
- VMXPanic();
- return 0;
-}
-
-
-
-
-
-static int HandleVMPrintsAndPanics(struct VM *vm, uint_t port, uint_t data)
-{
- if (port==VMXASSIST_INFO_PORT &&
- (vm->state == VM_VMXASSIST_STARTUP ||
- vm->state == VM_VMXASSIST_V8086_BIOS ||
- vm->state == VM_VMXASSIST_V8086)) {
- // Communication channel from VMXAssist
- PrintTrace("VMXASSIST Output Port\n");
- PrintDebug("%c",data&0xff);
- return 1;
- }
-
- if ((port==ROMBIOS_PANIC_PORT ||
- port==ROMBIOS_PANIC_PORT2 ||
- port==ROMBIOS_DEBUG_PORT ||
- port==ROMBIOS_INFO_PORT) &&
- (vm->state==VM_VMXASSIST_V8086_BIOS)) {
- // rombios is communicating
- PrintTrace("ROMBIOS Output Port\n");
- // PrintDebug("%c",data&0xff);
- return 1;
- }
-
- if (port==BOOT_STATE_CARD_PORT && vm->state==VM_VMXASSIST_V8086_BIOS) {
- // rombios is sending something to the display card
- PrintTrace("Hex Display: 0x%x\n",data&0xff);
- return 1;
- }
- return 0;
-}
-
-static int HandleInOutExit(struct VM *vm)
-{
- uint_t address;
-
- struct VMCSExitInfoFields *exitinfo = &(vm->vmcs.exitInfoFields);
- struct VMExitIOQual * qual = (struct VMExitIOQual *)&(vm->vmcs.exitInfoFields.qualification);
- struct VMXRegs *regs = &(vm->registers);
-
- address=GetLinearIP(vm);
-
- PrintTrace("Handling Input/Output Instruction Exit\n");
-
- PrintTrace_VMX_Regs(regs);
-
- PrintTrace("Qualifications=0x%x\n", exitinfo->qualification);
- PrintTrace("Reason=0x%x\n", exitinfo->reason);
- PrintTrace("IO Port: 0x%x (%d)\n", qual->port, qual->port);
- PrintTrace("Instruction Info=%x\n", exitinfo->instrInfo);
- PrintTrace("%x : %s %s %s instruction of length %d for %d bytes from/to port 0x%x\n",
- address,
- qual->dir == 0 ? "output" : "input",
- qual->string ==0 ? "nonstring" : "STRING",
- qual->REP == 0 ? "with no rep" : "WITH REP",
- exitinfo->instrLength,
- qual->accessSize==0 ? 1 : qual->accessSize==1 ? 2 : 4,
- qual->port);
+#include <palacios/vmx_handler.h>
+#include <palacios/vmm_types.h>
+#include <palacios/vmm.h>
- if ((qual->port == PIC_MASTER_CMD_ISR_PORT) ||
- (qual->port == PIC_MASTER_IMR_PORT) ||
- (qual->port == PIC_SLAVE_CMD_ISR_PORT) ||
- (qual->port == PIC_SLAVE_IMR_PORT)) {
- PrintTrace( "PIC Access\n");
- }
-
- if ((qual->dir == 1) && (qual->REP == 0) && (qual->string == 0)) {
- char byte = In_Byte(qual->port);
-
- vm->vmcs.guestStateArea.rip += exitinfo->instrLength;
- regs->eax = (regs->eax & 0xffffff00) | byte;
- PrintTrace("Returning 0x%x in eax\n", (regs->eax));
- }
-
- if (qual->dir==0 && qual->REP==0 && qual->string==0) {
- // See if we need to handle the outb as a signal or
- // print from the VM
- if (HandleVMPrintsAndPanics(vm,qual->port,regs->eax)) {
- } else {
- // If not, just go ahead and do the outb
- Out_Byte(qual->port,regs->eax);
- PrintTrace("Wrote 0x%x to port\n",(regs->eax));
- }
- vm->vmcs.guestStateArea.rip += exitinfo->instrLength;
- }
-
- return 0;
-}
-
-
-static int HandleExternalIRQExit(struct VM *vm)
+int v3_handle_vmx_exit(struct guest_info * info)
{
- struct VMCSExitInfoFields * exitinfo = &(vm->vmcs.exitInfoFields);
- struct VMExitIntInfo * intInfo = (struct VMExitIntInfo *)&(vm->vmcs.exitInfoFields.intInfo);
-
- PrintTrace("External Interrupt captured\n");
- PrintTrace("IntInfo: %x\n", exitinfo->intInfo);
-
-
- if (!intInfo->valid) {
- // interrupts are off, but this interrupt is not acknoledged (still pending)
- // so we turn on interrupts to deliver appropriately in the
- // host
- PrintTrace("External Interrupt is invald. Turning Interrupts back on\n");
- asm("sti");
+ PrintDebug("VMX Exit taken!\n");
return 0;
- }
-
- // At this point, interrupts are off and the interrupt has been
- // acknowledged. We will now handle the interrupt ourselves
- // and turn interrupts back on in the host
-
- PrintTrace("type: %d\n", intInfo->type);
- PrintTrace("number: %d\n", intInfo->nr);
-
- PrintTrace("Interrupt %d occuring now and handled by HandleExternalIRQExit\n",intInfo->nr);
-
- switch (intInfo->type) {
- case 0: { // ext. IRQ
- // In the following, we construct an "int x" instruction
- // where x is the specific interrupt number that is raised
- // then we execute that instruciton
- // because we are in host context, that means it is delivered as normal
- // through the host IDT
-
- ((char*)(&&ext_int_seq_start))[1] = intInfo->nr;
-
- PrintTrace("Interrupt instruction setup done %x\n", *((ushort_t *)(&&ext_int_seq_start)));
-
-ext_int_seq_start:
- asm("int $0");
- }
-
- break;
- case 2: // NMI
- PrintTrace("Type: NMI\n");
- break;
- case 3: // hw exception
- PrintTrace("Type: HW Exception\n");
- break;
- case 4: // sw exception
- PrintTrace("Type: SW Exception\n");
- break;
- default:
- PrintTrace("Invalid Interrupt Type\n");
- return -1;
- }
-
- if (intInfo->valid && intInfo->errorCode) {
- PrintTrace("IntError: %x\n", exitinfo->intErrorCode);
- }
-
-
- return 0;
-
}
-
-
-
-
-
-
-
-static int HandleExceptionOrNMI(struct VM *vm)
-{
- struct Instruction inst;
- uint_t num;
- uint_t type;
- uint_t errorvalid;
- uint_t error;
- uint_t ext=0;
- uint_t idt=0;
- uint_t ti=0;
- uint_t selectorindex=0;
-
- PrintTrace("Exception or NMI occurred\n");
-
- num=vm->vmcs.exitInfoFields.intInfo & 0xff;
- type=(vm->vmcs.exitInfoFields.intInfo & 0x700)>>8;
- errorvalid=(vm->vmcs.exitInfoFields.intInfo & 0x800)>>11;
- if (errorvalid) {
- error=vm->vmcs.exitInfoFields.intErrorCode;
- ext=error&0x1;
- idt=(error&0x2)>>1;
- ti=(error&0x4)>>2;
- selectorindex=(error>>3)&0xffff;
- }
-
- PrintTrace("Exception %d now - handled by HandleExceptionOrNMI\n",num);
-
- PrintTrace("Exception Number %u : %s\n", num, exception_names[num]);
- PrintTrace("Exception Type %u : %s\n", type, exception_type_names[type]);
- if (errorvalid) {
- if (ext) {
- PrintTrace("External\n");
- } else {
- PrintTrace("%s - Selector Index is %u\n", idt ? "IDT" : ti ? "LDT" : "GDT", selectorindex);
- }
- }
-
- DecodeCurrentInstruction(vm,&inst);
-
- if (inst.type==VM_MOV_TO_CR0) {
- PrintTrace("MOV TO CR0, oldvalue=0x%x, newvalue=0x%x\n",inst.input2, inst.input1);
- if ((inst.input2 & CR0_PE) && !(inst.input1 & CR0_PE) && vm->state==VM_VMXASSIST_STARTUP) {
- // This is VMXAssist signalling for us to turn on V8086 mode and
- // jump into the bios
- PrintTrace("VMXAssist is signaling us for switch to V8086 mode and jump to 0xf000:fff0\n");
- SetupV8086ModeForBoot(vm);
- goto leave;
- } else {
- PrintTrace("Instruction is a write to CR0, but we don't understand it so we'll just exec it\n");
- }
- }
-
-
- PrintTrace("Trying to execute the faulting instruction in VMM context now\n");
- ExecFaultingInstructionInVMM(vm);
-
- leave:
- //
- //PanicUnhandledVMExit(vmcs,regs);
- //VMXPanic();
- return 0;
-}
-
-
-
-
-
-int Do_VMM(struct VMXRegs regs)
-{
-
- ullong_t vmcs_ptr = 0;
- uint_t vmcs_ptr_low = 0;
- int ret = 0;
- uint_t vmx_abort = 0;
-
-
-
- PrintTrace("Vm Exit\n");
- ret = VMCS_STORE(&vmcs_ptr);
- vmcs_ptr &= 0xffffffff;
- vmcs_ptr_low += vmcs_ptr;
-
-
-
-
- PrintTrace("ret=%d\n", ret);
- PrintTrace("Revision: %x\n", *(uint_t *)(vmcs_ptr_low));
- vmx_abort = *(uint_t*)(((char *)vmcs_ptr_low)+4);
-
- struct VM *vm = FindVM();
-
- if (vmx_abort != 0) {
- PrintTrace("VM ABORTED w/ code: %x\n", vmx_abort);
- return -1;
- }
-
- vm->registers = regs;
-
- if (CopyOutVMCSData(&(vm->vmcs)) != 0) {
- PrintTrace("Could not copy out VMCS\n");
- return -1;
- }
-
-
- PrintTrace("Guest esp: 0x%x (%u)\n", vm->vmcs.guestStateArea.rsp, vm->vmcs.guestStateArea.rsp);
-
- PrintTrace("VM Exit for reason: %d (%x)\n",
- vm->vmcs.exitInfoFields.reason & 0x00000fff,
- vm->vmcs.exitInfoFields.reason);
-
- if (vm->vmcs.exitInfoFields.reason & (0x1<<29) ) {
- PrintTrace("VM Exit is from VMX root operation. Panicking\n");
- VMXPanic();
- }
-
- if (vm->vmcs.exitInfoFields.reason & (0x1<<31) ) {
- PrintTrace("VM Exit is due to a VM entry failure. Shouldn't happen here. Panicking\n");
- PrintTrace_VMCSData(&(vm->vmcs));
- VMXPanic();
- }
-
- switch (vm->vmcs.exitInfoFields.reason) {
- case VM_EXIT_REASON_INFO_EXCEPTION_OR_NMI:
- ret = HandleExceptionOrNMI(vm);
- break;
- case VM_EXIT_REASON_EXTERNAL_INTR:
- ret = HandleExternalIRQExit(vm);
- break;
- case VM_EXIT_REASON_TRIPLE_FAULT:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_INIT_SIGNAL:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_STARTUP_IPI:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_IO_SMI:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_OTHER_SMI:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_INTR_WINDOW:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_NMI_WINDOW:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_TASK_SWITCH:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_CPUID:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_INVD:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_INVLPG:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_RDPMC:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_RDTSC:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_RSM:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMCALL:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMCLEAR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMLAUNCH:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMPTRLD:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMPTRST:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMREAD:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMRESUME:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMWRITE:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMXOFF:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMXON:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_CR_REG_ACCESSES:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_MOV_DR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_IO_INSTR:
- ret = HandleInOutExit(vm);
- break;
- case VM_EXIT_REASON_RDMSR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_WRMSR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_ENTRY_FAIL_INVALID_GUEST_STATE:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_ENTRY_FAIL_MSR_LOAD:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_MWAIT:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_MONITOR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_PAUSE:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_ENTRY_FAILURE_MACHINE_CHECK:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_TPR_BELOW_THRESHOLD:
- ret = PanicUnhandledVMExit(vm);
- break;
- default:
- ret = PanicUnhandledVMExit(vm);
- break;
- }
-
-
- regs = vm->registers;
- CopyInVMCSData(&(vm->vmcs));
-
- /*
- {
- VMCS_CLEAR(vmcs_ptr);
- }
- */
-
- PrintTrace("Returning from Do_VMM: %d\n", ret);
-
- return ret;
-}
-
-
-
-
-
-
-// simply execute the instruction that is faulting and return
-static int ExecFaultingInstructionInVMM(struct VM *vm)
-{
- uint_t address = GetLinearIP(vm);
- myregs = (uint_t)&(vm->registers);
-
-
- PrintTrace("About the execute faulting instruction!\n");
- PrintTrace("Instruction is:\n");
- PrintTraceMemDump((void*)(address),vm->vmcs.exitInfoFields.instrLength);
-
-
- PrintTrace("The template code is:\n");
- PrintTraceMemDump(&&template_code,TEMPLATE_CODE_LEN);
-
- // clone the template code
- //memcpy(&&template_code,code,MAX_CODE);
-
- // clean up the nop field
- memset(&&template_code+INSTR_OFFSET_START,*((uchar_t *)(&&template_code+0)),NOP_SEQ_LEN);
- // overwrite the nops with the faulting instruction
- memcpy(&&template_code+INSTR_OFFSET_START, (void*)(address),vm->vmcs.exitInfoFields.instrLength);
-
- PrintTrace("Finished modifying the template code, which now is:\n");
- PrintTraceMemDump(&&template_code,TEMPLATE_CODE_LEN);
-
- PrintTrace("Now entering modified template code\n");
-
-
- template_code:
- // Template code stores current registers,
- // restores registers, has a landing pad of noops
- // that will be modified, restores current regs, and then returns
- //
- // Note that this currently ignores cr0, cr3, cr4, dr7, rsp, rip, and rflags
- // it also blythly assumes it can exec the instruction in protected mode
- //
- __asm__ __volatile__ ("nop\n" // for cloning purposes (1 byte)
- "pusha\n" // push our current regs onto the current stack (1 byte)
- "movl %0, %%eax\n" // Get oldesp location (5 bytes)
- "movl %%esp, (%%eax)\n" // store the current stack pointer in oldesp (2 bytes)
- "movl %1, %%eax\n" // Get regs location (5 bytes)
- "movl (%%eax), %%esp\n" // point esp at regs (2 bytes)
- "popa\n" // now we have the VM registers restored (1 byte)
- "nop\n" // now we execute the actual instruction (1 byte x 10)
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- // need to copy back to the VM registers!
- "movl %0, %%eax\n" // recapture oldesp location (5 bytes)
- "movl (%%eax), %%esp\n" // now we'll get our esp back from oldesp (2 bytes)
- "popa\n" // and restore our GP regs and we're done (1 byte)
- : "=m"(oldesp)
- : "m"(myregs)
- );
-
- PrintTrace("Survived executing the faulting instruction and returning.\n");
-
- vm->vmcs.guestStateArea.rip += vm->vmcs.exitInfoFields.instrLength;
-
- return 0;
-
-}
-
+#; -*- fundamental -*-
#define VMX_SUCCESS 0
#define VMX_FAIL_INVALID 1
#define VMX_FAIL_VALID 2
+#define VMM_FAILURE 3
#define VMCS_HOST_RSP 0x00006C14
+#define VMCS_HOST_RIP 0x00006C16
#if defined(__V3_64BIT__)
-#define r(reg) %r##reg
+#define save_registers(location) \
+ pushq %rax; \
+ movq location, %rax; \
+ movq %rdi, (%rax); \
+ movq %rsi, 8(%rax); \
+ movq %rbp, 16(%rax); \
+ movq $0, 24(%rax); \
+ movq %rbx, 32(%rax); \
+ movq %rdx, 40(%rax); \
+ movq %rcx, 48(%rax); \
+ pushq %rbx; \
+ movq 16(%rsp), %rbx; \
+ movq %rbx, 56(%rax); \
+ popq %rbx; \
+ \
+ movq %r8, 64(%rax); \
+ movq %r9, 72(%rax); \
+ movq %r10, 80(%rax); \
+ movq %r11, 88(%rax); \
+ movq %r12, 96(%rax); \
+ movq %r13, 104(%rax); \
+ movq %r14, 112(%rax); \
+ movq %r15, 120(%rax); \
+ popq %rax;
+
+
+#define restore_registers(location) \
+ push %rax; \
+ mov location, %rax; \
+ mov (%rax), %rdi; \
+ mov 8(%rax), %rsi; \
+ mov 16(%rax), %rbp; \
+ mov 32(%rax), %rbx; \
+ mov 40(%rax), %rdx; \
+ mov 48(%rax), %rcx; \
+ \
+ mov 64(%rax), %r8; \
+ mov 72(%rax), %r9; \
+ mov 80(%rax), %r10; \
+ mov 88(%rax), %r11; \
+ mov 96(%rax), %r12; \
+ mov 104(%rax), %r13; \
+ mov 112(%rax), %r14; \
+ mov 120(%rax), %r15; \
+ pop %rax;
+
+
#define PUSHA \
push %rax; \
pop %rcx; \
pop %rbx; \
pop %rax;
+
+.align 8
+.globl v3_vmx_exit_handler
+v3_vmx_exit_handler:
+ save_registers(8(%rsp));
+ addq $8, %rsp
+ POPA
+ popf
+ pushq %rdi
+ call v3_handle_vmx_exit
+
+ andq %rax, %rax
+ jnz .Lvmm_failure
+
+v3_vmx_vmresume:
+ pop %rdi
+ pushf
+ PUSHA
+ pushq %rdi
+ restore_registers(%rdi);
+
+ vmresume
+
+ addq $8, %rsp
+ jz .Lfail_valid
+ jc .Lfail_invalid
+ jmp .Lreturn
+
+.align 8
+.globl v3_vmx_vmlaunch
+// vm_regs = %rdi
+v3_vmx_vmlaunch:
+ cli
+ pushf
+ PUSHA
+ pushq %rdi
+
+ movq %rsp, %rax
+ movq $VMCS_HOST_RSP, %rbx
+ vmwrite %rax, %rbx
+ jz .Lfail_valid
+ jc .Lfail_invalid
+
+ movq $v3_vmx_exit_handler, %rax
+ movq $VMCS_HOST_RIP, %rbx
+ vmwrite %rax, %rbx
+ jz .Lfail_valid
+ jc .Lfail_invalid
+
+ restore_registers(%rdi);
+
+ vmlaunch
+ jz .Lfail_valid
+ jc .Lfail_invalid
+ jmp .Lreturn
+
+.Lfail_valid:
+ addq $8, %rsp
+ POPA
+ movq $VMX_FAIL_VALID, %rax
+ jmp .Lreturn
+
+.Lfail_invalid:
+ addq $8, %rsp
+ POPA
+ movq $VMX_FAIL_INVALID, %rax
+ jmp .Lreturn
+
+.Lvmm_failure:
+ addq $8, %rsp
+ POPA
+ movq $VMM_FAILURE, %rax
+ jmp .Lreturn
+
+.Lreturn:
+ sti
+ popf
+ ret
+
#else
-#define r(reg) %e##reg
-
+#define save_resgisters(location) \
+ pushl %eax; \
+ movl location, %eax; \
+ movl %edi, (%eax); \
+ movl %esi, 8(%eax); \
+ movl %ebp, 16(%eax); \
+ movl $0, 24(%eax); \
+ movl %ebx, 32(%eax); \
+ movl %edx, 40(%eax); \
+ movl %ecx, 48(%eax); \
+ pushl %ebx; \
+ movl 8(%esp), %ebx; \
+ movl %ebx, 56(%eax); \
+ popl %ebx; \
+ popl %eax;
+
+
+#define restore_registers(location) \
+ pushl %eax; \
+ movl location, %eax; \
+ movl (%eax), %edi; \
+ movl 8(%eax), %esi; \
+ movl 16(%eax), %ebp; \
+ movl 32(%eax), %ebx; \
+ movl 40(%eax), %edx; \
+ movl 48(%eax), %ecx; \
+ popl %eax;
+
#define PUSHA \
push %eax; \
push %ebx; \
pop %ebx; \
pop %eax;
-#endif
-
.align 8
.globl v3_vmx_exit_handler
v3_vmx_exit_handler:
- PUSHA
- call v3_vmx_handle_exit
+ save_registers(4(%esp))
+ addl $8, %rsp
POPA
+ popf
+ pushl %rdi
+ call v3_handle_vmx_exit
+
+ andl %eax, %eax
+ jnz .Lvmm_failure
v3_vmx_vmresume:
+ popl %edi
+ pushf
+ PUSHA
+ pushl %edi
+ restore_registers(%rdi)
+
vmresume
- sti
+
+ addl $8, %esp
jz .Lfail_valid
jc .Lfail_invalid
jmp .Lreturn
+.align 8
.globl v3_vmx_vmlaunch
+// vm_regs = %edi
v3_vmx_vmlaunch:
- cli
+ cli
pushf
PUSHA
+ pushl %edi
- mov r(sp), r(ax)
- mov $VMCS_HOST_RSP, r(bx)
- vmwrite r(bx), r(ax)
+ movl %esp, %eax
+ movl $VMCS_HOST_RSP, %ebx
+ vmwrite %eax, %ebx
jz .Lfail_valid
jc .Lfail_invalid
+ movl $v3_vmx_exit_handler, %eax
+ movl $VMCS_HOST_RIP, %ebx
+ vmwrite %eax, %ebx
+ jz .Lfail_valid
+ jc .Lfail_invalid
+
+ restore_registers(%edi)
+
vmlaunch
- sti
jz .Lfail_valid
jc .Lfail_invalid
jmp .Lreturn
.Lfail_valid:
- mov $VMX_FAIL_VALID, r(ax)
+ addl $8, %esp
+ POPA
+ movl $VMX_FAIL_VALID, %eax
jmp .Lreturn
.Lfail_invalid:
- mov $VMX_FAIL_INVALID, r(ax)
+ addq $8, %esp
+ POPA
+ movl $MVX_FAIL_INVALID, %eax
jmp .Lreturn
-.Lreturn:
+.Lvmm_failure:
+ addq $8, %esp
POPA
+ movl $VMM_FAILURE, %eax
+ jmp .Lreturn
+
+.Lreturn:
+ sti
popf
ret
-
-
+#endif
