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vmmhelper.c
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vmmhelper.c
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#include "common.h"
#include "vmmhelper.h"
#include "main.h"
#include "neward.h"
#include "mm.h"
/*
#include "vmmemu.h"
*/
#include "vmcall.h"
#include "vmpaging.h"
#include "vmeventhandler.h"
#include "vmreadwrite.h"
#include "msrnames.h"
#include "vmxcontrolstructures.h"
#include "distorm.h"
#include "realmodeemu.h"
#include "multicore.h"
#include "offloados.h"
#include "vmeventhandler_amd.h"
#include "vmxsetup.h"
#include "epthandler.h"
#ifndef DEBUG
#define sendstringf(s,x...)
#define sendstring(s)
#endif
//cpu specific stuff, put inside structure and give each cpu one
int ISPAGING(pcpuinfo currentcpuinfo)
{
if (isAMD)
{
regCR0 cr0;
cr0.CR0=currentcpuinfo->vmcb->CR0;
return cr0.PG==1;
}
else
{
if (hasUnrestrictedSupport)
return (vmread(vm_guest_cr0) & CR0_PG)==0;
else
return (vmread(vm_cr0_read_shadow) & CR0_PG)==1;
}
}
int ISREALMODE(pcpuinfo currentcpuinfo)
{
if (isAMD)
{
regCR0 cr0;
cr0.CR0=currentcpuinfo->vmcb->CR0;
return cr0.PE==0;
}
else
{
if (hasUnrestrictedSupport)
return (vmread(vm_guest_cr0) & 1)==0;
else
return (vmread(vm_cr0_read_shadow) & 1)==0;
}
}
int IS64BITPAGING(pcpuinfo currentcpuinfo)
{
if (isAMD)
{
return (currentcpuinfo->vmcb->EFER & (1<<10))==(1<<10);
}
else
return ((vmread(vm_entry_controls) & VMENTRYC_IA32E_MODE_GUEST) != 0);
}
int IS64BITCODE(pcpuinfo currentcpuinfo)
{
if (isAMD)
{
Segment_Attribs cs;
cs.SegmentAttrib=currentcpuinfo->vmcb->cs_attrib;
return cs.L;
}
else
return IS64BITPAGING(currentcpuinfo) && ((vmread(vm_guest_cs_access_rights) >> 13) & 1);
}
int isDebugFault(QWORD dr6, QWORD dr7)
//returns 1 if this results in a Fault
{
regDR6 d6;
regDR7 d7;
d6.DR6=dr6;
d7.DR7=dr7;
if ((d6.BD) && (d7.GD))
return 1; //general detect is a fault
else
return 0; //everything else is a trap
}
char * getVMExitReassonString(void)
{
int i=vmread(vm_exit_reason) & 0x7fffffff;
switch (i)
{
case 0: return "Exception or NMI";
case 1: return "External interrupt";
case 2: return "Tripple fault";
case 3: return "INIT Signal";
case 4: return "Start-up IPI (SIPI)";
case 5: return "SMI interrupt";
case 6: return "Other SMI";
case 7: return "Interrupt window";
case 8: return "NMI window";
case 9: return "Task switch";
case 10: return "CPUID";
case 14: return "INVLPG";
case 17: return "VMREAD";
case 18: return "VMCALL";
case 19: return "VMCLEAR";
case 21: return "VMPTRLD";
case 23: return "VMREAD";
case 25: return "VMWRITE";
case 27: return "VMXON"; //or: omg it's one bee
case 28: return "Controlregister access";
case vm_exit_io_access: return "IO Access";
case 31: return "RDMSR";
case 32: return "WRMSR";
case 33: return "Invalid guest state";
case 37: return "Monitor trap flag";
case vm_exit_ept_violation: return "EPT Violation";
case vm_exit_ept_misconfiguration: return "EPT Misconfiguration";
case 52: return "Preemption timer";
case 55: return "XSETBV";
default :return "NYI";
}
}
char * getVMInstructionErrorString(void)
/*
* get the last vm error and return a pointer to the string describing that error
*/
{
int i=vmread(0x4400) & 0x1f;
char *result;
switch (i)
{
case 0: result="No error"; break;
case 1: result="VMCALL executed in VMX root operation"; break;
case 2: result="VMCLEAR with invalid physical address"; break;
case 3: result="VMCLEAR with VMXON pointer"; break;
case 4: result="VMLAUNCH with non-clear VMCS"; break;
case 5: result="VMRESUME with non-launched VMCS"; break;
case 6: result="VMRESUME with a corrupted VMCS"; break;
case 7: result="VM entry with invalid fields"; break;
case 8: result="VM entry with invalid host-state fields"; break;
case 9: result="VMPTRLD with invalid physical address"; break;
case 10: result="VMPTRLD with VMXON pointer"; break;
case 11: result="VMPTRLD with incorrect VMCS revision identifier"; break;
case 12: result="VMREAD/VMWRITE from/to unsupported VMCS component"; break;
case 13: result="VMWRITE to read-only VMCS component"; break;
case 15: result="VMXON executed in VMX root operation"; break;
case 16: result="VM entry with invalid executive-VMCS pointer"; break;
case 17: result="VM entry with non-launched executive-VMCS pointer"; break;
case 18: result="VM entry with executive-VMCS pointer but not VMXON pointer"; break;
case 19: result="VMCALL with non-clear VMCS"; break;
case 20: result="VMCALL with invalid VM-exit control fields"; break;
case 22: result="VMCALL with incorrect MSEG revision number"; break;
case 23: result="VMXOFF under dual-monitor treatment of SMIs and SMM"; break;
case 24: result="VMCALL with invalid SMM-monitor features"; break;
case 25: result="VM entry with invalid VM-execution control fields in executive VMCS"; break;
case 26: result="VM entry with events blocked by MOV SS"; break;
default: result="Undefined"; break;
}
return result;
}
void setTrap(void)
{
UINT64 guestrflags=vmread(vm_guest_rflags);
PRFLAGS pguestrflags=(PRFLAGS)&guestrflags;
pguestrflags->TF=1;
vmwrite(vm_guest_rflags,(UINT64)guestrflags);
}
void setResumeFlag(void)
{
UINT64 guestrflags=vmread(vm_guest_rflags);
PRFLAGS pguestrflags=(PRFLAGS)&guestrflags;
pguestrflags->RF=1;
vmwrite(vm_guest_rflags,(UINT64)guestrflags);
}
void setupTSS8086(void)
// sets up the TSS used for realmode emulation
{
unsigned char *c;
sendstring("Seting up TSS (for VM8086)\n\r");
// setup the TSS for virtual 8086 mode
VirtualMachineTSS_V8086->Previous_Task_Link=0;
VirtualMachineTSS_V8086->Reserved1=0;
VirtualMachineTSS_V8086->ESP0=(ULONG)VirtualToPhysical((void *)((UINT64)RealmodeRing0Stack+4096-16));
VirtualMachineTSS_V8086->SS0=8; //32-bit code segment
VirtualMachineTSS_V8086->Reserved2=0;
VirtualMachineTSS_V8086->ESP1=0;
VirtualMachineTSS_V8086->SS1=0;
VirtualMachineTSS_V8086->Reserved3=0;
VirtualMachineTSS_V8086->ESP2=0;
VirtualMachineTSS_V8086->SS2=0;
VirtualMachineTSS_V8086->Reserved4=0;
VirtualMachineTSS_V8086->CR3=(ULONG)VirtualToPhysical(nonpagedEmulationPagedir);
VirtualMachineTSS_V8086->EIP=0;
VirtualMachineTSS_V8086->EFLAGS=0x33000; //x86 vm
VirtualMachineTSS_V8086->EAX=0;
VirtualMachineTSS_V8086->ECX=0;
VirtualMachineTSS_V8086->EDX=0;
VirtualMachineTSS_V8086->EBX=0;
VirtualMachineTSS_V8086->ESP=0xfff0;
VirtualMachineTSS_V8086->EBP=0;
VirtualMachineTSS_V8086->ESI=0;
VirtualMachineTSS_V8086->EDI=0;
VirtualMachineTSS_V8086->ES=0;
VirtualMachineTSS_V8086->Reserved5=0;
VirtualMachineTSS_V8086->CS=0;
VirtualMachineTSS_V8086->Reserved6=0;
VirtualMachineTSS_V8086->SS=0;
VirtualMachineTSS_V8086->Reserved7=0;
VirtualMachineTSS_V8086->DS=0;
VirtualMachineTSS_V8086->Reserved8=0;
VirtualMachineTSS_V8086->FS=0;
VirtualMachineTSS_V8086->Reserved9=0;
VirtualMachineTSS_V8086->GS=0;
VirtualMachineTSS_V8086->Reserved10=0;
VirtualMachineTSS_V8086->LDTss=0;
VirtualMachineTSS_V8086->Reserved11=0;
VirtualMachineTSS_V8086->Trap=0;
VirtualMachineTSS_V8086->Reserved12=0;
VirtualMachineTSS_V8086->IOBASE=sizeof(TSS)+32;
zeromemory((void *)((UINT64)VirtualMachineTSS_V8086+ sizeof(TSS)),32);
*(ULONG *)(VirtualMachineTSS_V8086+ sizeof(TSS))=0x200000; //int 0x15 break
zeromemory((void *)((UINT64)VirtualMachineTSS_V8086+ sizeof(TSS)+31),8193);
c=(unsigned char *)(VirtualMachineTSS_V8086);
c[sizeof(TSS)+32+8192]=0xff;
//c[sizeof(TSS)+0]=0xff; //ff; //break on 0 to 7
//c[sizeof(TSS)+1]=0xff;
//c[sizeof(TSS)+2]=0xff;
//c[sizeof(TSS)+3]=0xff;
//c[sizeof(TSS)+4]=0xff;
c[sizeof(TSS)+2]=0x20; //0x20=break on int15*/ // 0x28; //break on int15 and int13
}
/*
void exportwholevmstate(void)
{
//this routine will show every vmx register
int orig=nosendchar[getAPICID()];
unsigned int i;
nosendchar[getAPICID()]=0;
sendstring("\n\r\n\r");
sendstring("---------------------------------------------\n\r");
for (i=0x800; i<=0x80e; i+=2)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=0xc00; i<=0xc0c; i+=2)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=0x2000; i<=0x200d; i++)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=0x2010; i<=0x2013; i++)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=0x2800; i<=0x2803; i++)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=0x4000; i<=0x401c; i+=2)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=0x4400; i<=0x440e; i+=2)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=0x4800; i<=0x482a; i+=2)
sendstringf("%x : %8\n\r", i, vmread(i));
sendstringf("%x : %8\n\r", 0x4c00, vmread(0x4c00));
for (i=0x6000; i<=0x600e; i+=2)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=0x6400; i<=0x640a; i+=2)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=vm_guest_cr0; i<=0x6826; i+=2)
sendstringf("%x : %8\n\r", i, vmread(i));
for (i=0x6c00; i<=0x6c16; i+=2)
sendstringf("%x : %8\n\r", i, vmread(i));
sendstring("---------------------------------------------\n\r");
nosendchar[getAPICID()]=orig;
}
*/
void StoreVirtualMachineState(pcpuinfo currentcpuinfo UNUSED, VMRegisters *registers UNUSED)
{
#ifdef DEBUG
vmstates[vmstates_pos].registers=*registers;
vmstates[vmstates_pos].rsp=vmread(vm_guest_rsp);
vmstates[vmstates_pos].rip=vmread(vm_guest_rip);
vmstates[vmstates_pos].rflags=vmread(vm_guest_rflags);
vmstates[vmstates_pos].efer=currentcpuinfo->efer;
vmstates[vmstates_pos].es=vmread(vm_guest_es);
vmstates[vmstates_pos].cs=vmread(vm_guest_cs);
vmstates[vmstates_pos].ss=vmread(vm_guest_ss);
vmstates[vmstates_pos].ds=vmread(vm_guest_ds);
vmstates[vmstates_pos].fs=vmread(vm_guest_fs);
vmstates[vmstates_pos].gs=vmread(vm_guest_gs);
vmstates[vmstates_pos].ldtr=vmread(vm_guest_ldtr);
vmstates[vmstates_pos].tr=vmread(vm_guest_tr);
vmstates[vmstates_pos].es_base=vmread(vm_guest_es_base);
vmstates[vmstates_pos].cs_base=vmread(vm_guest_cs_base);
vmstates[vmstates_pos].ss_base=vmread(vm_guest_ss_base);
vmstates[vmstates_pos].ds_base=vmread(vm_guest_ds_base);
vmstates[vmstates_pos].fs_base=vmread(vm_guest_fs_base);
vmstates[vmstates_pos].gs_base=vmread(vm_guest_gs_base);
vmstates[vmstates_pos].ldtr_base=vmread(vm_guest_ldtr_base);
vmstates[vmstates_pos].tr_base=vmread(vm_guest_tr_base);
vmstates[vmstates_pos].exit_reason=vmread(vm_exit_reason);
vmstates[vmstates_pos].exit_interruptioninfo=vmread(vm_exit_interruptioninfo);
vmstates[vmstates_pos].exit_interruptionerror=vmread(vm_exit_interruptionerror);
vmstates[vmstates_pos].idtvector_information=vmread(vm_idtvector_information);
vmstates[vmstates_pos].idtvector_error=vmread(vm_idtvector_error);
// vmstates[vmstates_pos].cr3=vmread(vm_guest_cr3);
vmstates_pos++;
vmstates_pos=vmstates_pos % 4;
#endif
}
void displayPreviousStates(void)
{
#ifdef DEBUG
//find previous data
int previous_state=(vmstates_pos+2) % 4; //I need the one 2 steps back
int current_state=(vmstates_pos+3) % 4;
int itterator;
sendstringf("vmstates_pos=%d\n",vmstates_pos);
sendstringf("previous_state=%d\n",previous_state);
for (itterator=0; itterator<4; itterator++)
{
sendstringf("%s%d: CS:RIP=%x:%6 (base=%6)\n", ((itterator==previous_state)?"*":""), itterator, vmstates[itterator].cs, vmstates[itterator].rip, vmstates[itterator].cs_base);
sendstringf("%s%d: SS:RSP=%x:%6 (base=%6)\n", ((itterator==previous_state)?"*":""), itterator, vmstates[itterator].ss, vmstates[itterator].rsp, vmstates[itterator].ss_base);
sendstringf("%s%d: RFLAGS=%x\n", ((itterator==previous_state)?"*":""), itterator, vmstates[vmstates_pos].rflags);
sendstringf("%s%d: RAX=%x\n", ((itterator==previous_state)?"*":""), itterator, vmstates[itterator].registers.rax);
sendstringf("%s%d: Exit reason=%8 (%d) \n\r", ((itterator==previous_state)?"*":""),itterator, vmstates[itterator].exit_reason,vmstates[itterator].exit_reason & 0x0fffffff);
sendstringf("%s%d: VM-exit interruption information=%x\n\r", ((itterator==previous_state)?"*":""), itterator, vmstates[itterator].exit_interruptioninfo);
sendstringf("%s%d: VM-exit interruption error code=%x\n\r", ((itterator==previous_state)?"*":""), itterator, vmstates[itterator].exit_interruptionerror);
sendstringf("%s%d: IDT-vectoring information field=%x\n\r", ((itterator==previous_state)?"*":""), itterator,vmstates[itterator].idtvector_information);
sendstringf("%s%d: IDT-vectoring error code=%x\n\r", ((itterator==previous_state)?"*":""), itterator,vmstates[itterator].idtvector_error);
if (itterator!=current_state)
{
sendstringf("%s%d:---exit---\n", ((itterator==previous_state)?"*":""), itterator);
sendstringf("%s%d: CS:RIP=%x:%6 (base=%6)\n", ((itterator==previous_state)?"*":""), itterator, vmstates[itterator].exit_cs, vmstates[itterator].exit_rip, vmstates[itterator].exit_cs_base);
sendstringf("%s%d: SS:RSP=%x:%6 (base=%6)\n", ((itterator==previous_state)?"*":""), itterator, vmstates[itterator].exit_ss, vmstates[itterator].exit_rsp, vmstates[itterator].exit_ss_base);
sendstringf("%s%d: RFLAGS=%x\n", ((itterator==previous_state)?"*":""), itterator, vmstates[vmstates_pos].exit_rflags);
}
}
#endif
}
void sendvmstate(pcpuinfo currentcpuinfo UNUSED, VMRegisters *registers UNUSED)
{
#ifdef DEBUG
if (isAMD)
{
UINT64 rflags=currentcpuinfo->vmcb->RFLAGS;
PRFLAGS prflags=(PRFLAGS)&rflags;
sendstringf("CPL=%d\n", currentcpuinfo->vmcb->CPL);
if (registers) // print registers
{
sendstringf("RAX=%6 RBX=%6 R8=%6\n\r", currentcpuinfo->vmcb->RAX, registers->rbx, registers->r8);
sendstringf("RCX=%6 RDX=%6 R9=%6\n\r", registers->rcx, registers->rdx, registers->r9);
sendstringf("RSI=%6 RDI=%6 R10=%6\n\r",registers->rsi, registers->rdi, registers->r10);
sendstringf("RBP=%6 R11=%6\n\r",registers->rbp, registers->r11);
}
else
sendstring("\n...no registers...\n\n");
sendstringf("RSP=%6 R12=%6\n\r",currentcpuinfo->vmcb->RSP, registers?registers->r12:0);
sendstringf("RIP=%6 R13=%6\n\r",currentcpuinfo->vmcb->RIP, registers?registers->r13:0);
sendstringf(" R14=%6\n\r", registers?registers->r14:0);
sendstringf(" R15=%6\n\r", registers?registers->r15:0);
sendstringf("rflags=%6 (VM=%d RF=%d IOPL=%d NT=%d)\n\r",rflags,prflags->VM, prflags->RF, prflags->IOPL, prflags->NT);
sendstringf("(CF=%d PF=%d AF=%d ZF=%d SF=%d TF=%d IF=%d DF=%d OF=%d)\n\r\n\r", prflags->CF, prflags->PF, prflags->AF, prflags->ZF, prflags->SF, prflags->TF, prflags->IF, prflags->DF, prflags->OF);
sendstringf("cs=%8 (base=%6 , limit=%8, AT=%8)\n\r",currentcpuinfo->vmcb->cs_selector, currentcpuinfo->vmcb->cs_base, currentcpuinfo->vmcb->cs_limit, currentcpuinfo->vmcb->cs_attrib);
sendstringf("ss=%8 (base=%6 , limit=%8, AT=%8)\n\r",currentcpuinfo->vmcb->ss_selector, currentcpuinfo->vmcb->ss_base, currentcpuinfo->vmcb->ss_limit, currentcpuinfo->vmcb->ss_attrib);
sendstringf("ds=%8 (base=%6 , limit=%8, AT=%8)\n\r",currentcpuinfo->vmcb->ds_selector, currentcpuinfo->vmcb->ds_base, currentcpuinfo->vmcb->ds_limit, currentcpuinfo->vmcb->ds_attrib);
sendstringf("es=%8 (base=%6 , limit=%8, AT=%8)\n\r",currentcpuinfo->vmcb->es_selector, currentcpuinfo->vmcb->es_base, currentcpuinfo->vmcb->es_limit, currentcpuinfo->vmcb->es_attrib);
sendstringf("fs=%8 (base=%6 , limit=%8, AT=%8)\n\r",currentcpuinfo->vmcb->fs_selector, currentcpuinfo->vmcb->fs_base, currentcpuinfo->vmcb->fs_limit, currentcpuinfo->vmcb->fs_attrib);
sendstringf("gs=%8 (base=%6 , limit=%8, AT=%8)\n\r",currentcpuinfo->vmcb->gs_selector, currentcpuinfo->vmcb->gs_base, currentcpuinfo->vmcb->gs_limit, currentcpuinfo->vmcb->gs_attrib);
sendstringf("ldt=%8 (base=%6 , limit=%8, AT=%8)\n\r",currentcpuinfo->vmcb->ldtr_selector, currentcpuinfo->vmcb->ldtr_base, currentcpuinfo->vmcb->ldtr_limit, currentcpuinfo->vmcb->ldtr_attrib);
sendstringf("tr=%8 (base=%6 , limit=%8, AT=%8)\n\r",currentcpuinfo->vmcb->tr_selector, currentcpuinfo->vmcb->tr_base, currentcpuinfo->vmcb->tr_limit, currentcpuinfo->vmcb->tr_attrib);
sendstringf("\n\r");
sendstringf("gdt: base=%6 limit=%x\n\r",currentcpuinfo->vmcb->gdtr_base, currentcpuinfo->vmcb->gdtr_limit);
sendstringf("idt: base=%6 limit=%x\n\r",currentcpuinfo->vmcb->idtr_base, currentcpuinfo->vmcb->idtr_limit);
sendstringf("cr0=%6 cr3=%6 cr4=%6\n\r",currentcpuinfo->vmcb->CR0, currentcpuinfo->vmcb->CR3, currentcpuinfo->vmcb->CR4);
}
else
{
UINT64 rflags=vmread(vm_guest_rflags);
PRFLAGS prflags=(PRFLAGS)&rflags;
sendstringf("cpunr=%d\n\r", currentcpuinfo->cpunr);
sendstringf("getTaskRegister()=%x\n",getTaskRegister());
sendstringf("Activity state : %d interruptibility state : %d \n\r",vmread(vm_guest_activity_state), vmread(vm_guest_interruptability_state));
sendstringf("IS64BITPAGING=%d IS64BITCODE=%d ISREALMODE=%d\n\r", IS64BITPAGING(currentcpuinfo), IS64BITCODE(currentcpuinfo), ISREALMODE(currentcpuinfo));
if (hasUnrestrictedSupport)
sendstringf("efer=%x\n\r",vmread(vm_guest_IA32_EFER));
else
sendstringf("efer=%x (%x)\n\r",currentcpuinfo->efer, vmread(vm_guest_IA32_EFER));
sendstringf("ia32e mode guest=%d\n",((vmread(vm_entry_controls) & VMENTRYC_IA32E_MODE_GUEST) != 0) );
sendstringf("IA32_SYSENTER_CS=%x IA32_SYSENTER_EIP=%x IA32_SYSENTER_ESP=%x\n",vmread(vm_guest_IA32_SYSENTER_CS), vmread(vm_guest_IA32_SYSENTER_EIP), vmread(vm_guest_IA32_SYSENTER_ESP) );
if (registers) // print registers
{
sendstringf("RAX=%6 RBX=%6 R8=%6\n\r", registers->rax, registers->rbx, registers->r8);
sendstringf("RCX=%6 RDX=%6 R9=%6\n\r", registers->rcx, registers->rdx, registers->r9);
sendstringf("RSI=%6 RDI=%6 R10=%6\n\r",registers->rsi, registers->rdi, registers->r10);
sendstringf("RBP=%6 R11=%6\n\r",registers->rbp, registers->r11);
}
else
sendstring("\n...no registers...\n\n");
sendstringf("RSP=%6 R12=%6\n\r",vmread(vm_guest_rsp), registers?registers->r12:0);
sendstringf("RIP=%6 R13=%6\n\r",vmread(vm_guest_rip), registers?registers->r13:0);
sendstringf(" R14=%6\n\r", registers?registers->r14:0);
sendstringf(" R15=%6\n\r", registers?registers->r15:0);
sendstringf("rflags=%6 (VM=%d RF=%d IOPL=%d NT=%d)\n\r",rflags,prflags->VM, prflags->RF, prflags->IOPL, prflags->NT);
sendstringf("(CF=%d PF=%d AF=%d ZF=%d SF=%d TF=%d IF=%d DF=%d OF=%d)\n\r\n\r", prflags->CF, prflags->PF, prflags->AF, prflags->ZF, prflags->SF, prflags->TF, prflags->IF, prflags->DF, prflags->OF);
if (currentcpuinfo->invalidcs)
{
sendstring("Invalid cs...\n\r");
}
sendstringf("cs=%8 (base=%6 , limit=%8, AR=%8)\n\r",vmread(0x802),vmread(vm_guest_cs_base),vmread(vm_guest_cs_limit), vmread(0x4816));
sendstringf("ss=%8 (base=%6 , limit=%8, AR=%8)\n\r",vmread(0x804),vmread(vm_guest_ss_base),vmread(vm_guest_ss_limit), vmread(0x4818));
sendstringf("ds=%8 (base=%6 , limit=%8, AR=%8)\n\r",vmread(0x806),vmread(0x680c),vmread(0x4806), vmread(0x481a));
sendstringf("es=%8 (base=%6 , limit=%8, AR=%8)\n\r",vmread(0x800),vmread(0x6806),vmread(0x4800), vmread(0x4814));
sendstringf("fs=%8 (base=%6 , limit=%8, AR=%8)\n\r",vmread(0x808),vmread(0x680e),vmread(0x4808), vmread(0x481c));
sendstringf("gs=%8 (base=%6 , limit=%8, AR=%8)\n\r",vmread(0x80a),vmread(0x6810),vmread(0x480a), vmread(0x481e));
sendstringf("ldt=%8 (base=%6 , limit=%8, AR=%8)\n\r",vmread(0x80c),vmread(0x6812),vmread(0x480c), vmread(0x4820));
sendstringf("tr=%8 (base=%6 , limit=%8, AR=%8)\n\r",vmread(0x80e),vmread(0x6814),vmread(0x480e), vmread(0x4822));
sendstringf("\n\r");
sendstringf("gdt: base=%6 limit=%x\n\r",vmread(vm_guest_gdtr_base), vmread(vm_guest_gdt_limit));
sendstringf("idt: base=%6 limit=%x\n\r",vmread(vm_guest_idtr_base), vmread(vm_guest_idt_limit));
if (ISREALMODE(currentcpuinfo))
{
sendstringf("RM gdt: base=%6 limit=%x\n\r",currentcpuinfo->RealMode.GDTBase, currentcpuinfo->RealMode.GDTLimit);
sendstringf("RM idt: base=%6 limit=%x\n\r",currentcpuinfo->RealMode.IDTBase, currentcpuinfo->RealMode.IDTLimit);
}
regDR7 dr7;
dr7.DR7=vmread(vm_guest_dr7);
sendstringf("guest: dr0=%6 dr1=%6 dr2=%6 \n\r dr3=%6 dr6=%6 dr7=%6\n\r",getDR0(), getDR1(), getDR2(), getDR3(), getDR6(), dr7.DR7);
if (dr7.DR7 != 0x400)
{
sendstringf("dr7:");
if (dr7.G0)
sendstringf("G0 ");
if (dr7.L0)
sendstringf("L0 ");
if (dr7.G1)
sendstringf("G1 ");
if (dr7.L1)
sendstringf("L1 ");
if (dr7.G2)
sendstringf("G2 ");
if (dr7.L2)
sendstringf("L2 ");
if (dr7.G3)
sendstringf("G3 ");
if (dr7.L3)
sendstringf("L3 ");
if (dr7.LE)
sendstringf("LE ");
if (dr7.GE)
sendstringf("GE ");
if (dr7.RW0)
sendstringf("RW0 ");
if (dr7.LEN0)
sendstringf("LEN0 ");
if (dr7.RW1)
sendstringf("RW1 ");
if (dr7.LEN1)
sendstringf("LEN1 ");
if (dr7.RW2)
sendstringf("RW2 ");
if (dr7.LEN2)
sendstringf("LEN2 ");
if (dr7.RW3)
sendstringf("RW3 ");
if (dr7.LEN3)
sendstringf("LEN3 ");
}
sendstringf("host dr7=%6\n\r", getDR7());
sendstringf("cr2=%6\n\r",getCR2());
sendstringf("real:\n\r");
sendstringf("cr0=%6 cr3=%6 cr4=%6\n\r",vmread(vm_guest_cr0), vmread(vm_guest_cr3), vmread(vm_guest_cr4));
sendstringf("fake (what vm sees):\n\r");
QWORD fakeCR0=(vmread(vm_guest_cr0) & (~vmread(vm_cr0_guest_host_mask))) | (vmread(vm_cr0_read_shadow) & vmread(vm_cr0_guest_host_mask));
QWORD fakeCR4=(vmread(vm_guest_cr4) & (~vmread(vm_cr4_guest_host_mask))) | (vmread(vm_cr4_read_shadow) & vmread(vm_cr4_guest_host_mask));
if (hasUnrestrictedSupport)
{
sendstringf("vm_cr0_guest_host_mask=%6 vm_cr0_read_shadow=%6\n", vmread(vm_cr0_guest_host_mask), vmread(vm_cr0_read_shadow));
sendstringf("vm_cr4_guest_host_mask=%6 vm_cr4_read_shadow=%6\n", vmread(vm_cr4_guest_host_mask), vmread(vm_cr4_read_shadow));
sendstringf("cr0=%6 cr3=%6 cr4=%6\n\r",fakeCR0, currentcpuinfo->guestCR3, fakeCR4);
}
else
sendstringf("cr0=%6 cr3=%6 cr4=%6\n\r",vmread(vm_cr0_read_shadow), currentcpuinfo->guestCR3, vmread(vm_cr4_read_shadow));
}
if (currentcpuinfo->vmxdata.insideVMXRootMode)
{
sendstringf("VMXON=%6\n\r", currentcpuinfo->vmxdata.guest_vmxonaddress);
sendstringf("VMCS=%6\n\r", currentcpuinfo->vmxdata.guest_activeVMCS);
sendstringf("running=%d\n\r", currentcpuinfo->vmxdata.runningvmx);
}
#endif
sendstringf("vm_execution_controls_cpu=%6\n", vmread(vm_execution_controls_cpu));
if (vmread(vm_execution_controls_cpu) & SECONDARY_EXECUTION_CONTROLS)
{
sendstringf("vm_execution_controls_cpu_secondary=%6 (unrestricted=%d)\n", vmread(vm_execution_controls_cpu_secondary), (vmread(vm_execution_controls_cpu_secondary) & SPBEF_ENABLE_UNRESTRICTED)!=0);
}
}
//int autocont=8;
int twister=0;
//int guestwantstoknow=0;
#if DISPLAYDEBUG==1
int verbosity=10;
#else
int verbosity=1;
#endif
int rotations=0;
int cpu2=0; //debug to stop cpu1 when cpu2 is spawned
int vmeventcount=0;
criticalSection vmexitlock;
int vmexit_amd(pcpuinfo currentcpuinfo, UINT64 *registers, void *fxsave UNUSED)
{
// displayline("vmexit_amd called. currentcpuinfo=%p\n", currentcpuinfo);
// displayline("cpunr=%d\n", currentcpuinfo->cpunr);
int result=0;
nosendchar[getAPICID()]=1;
#ifdef DEBUG
csEnter(&vmexitlock);
sendstringf("vmexit_amd for cpu %d\n", currentcpuinfo->cpunr);
#endif
result=handleVMEvent_amd(currentcpuinfo, (VMRegisters*)registers);
#ifdef DEBUG
csLeave(&vmexitlock);
#endif
return result;
}
#ifdef DEBUG
QWORD lastbeat=0;
int vmexit2(pcpuinfo currentcpuinfo, UINT64 *registers, void *fxsave);
int vmexit(pcpuinfo currentcpuinfo, UINT64 *registers, void *fxsave)
{
int result;
if (_rdtsc()>(lastbeat+100000000ULL))
{
nosendchar[getAPICID()]=0;
enableserial();
//sendstringf("*Alive*\n");
lastbeat=_rdtsc();
}
//debug code
csEnter(&vmexitlock);
int used_vmstates_pos=vmstates_pos;
StoreVirtualMachineState(currentcpuinfo, (VMRegisters*)registers); //store the event and all other information
result=vmexit2(currentcpuinfo, registers, fxsave);
vmstates[used_vmstates_pos].exit_cs=vmread(vm_guest_cs);
vmstates[used_vmstates_pos].exit_cs_base=vmread(vm_guest_cs_base);
vmstates[used_vmstates_pos].exit_ss=vmread(vm_guest_ss);
vmstates[used_vmstates_pos].exit_ss_base=vmread(vm_guest_ss_base);
vmstates[used_vmstates_pos].exit_rip=vmread(vm_guest_rip);
vmstates[used_vmstates_pos].exit_rsp=vmread(vm_guest_rsp);
vmstates[used_vmstates_pos].exit_rflags=vmread(vm_guest_rflags);
//vmstates[used_vmstates_pos].exit_cr3=vmread(vm_guest_cr3);
if ((result) && ((result >> 8)!=0xce))
{
nosendchar[getAPICID()]=0;
sendvmstate(currentcpuinfo, (VMRegisters*)registers);
}
csLeave(&vmexitlock);
return result;
}
int vmexit2(pcpuinfo currentcpuinfo, UINT64 *registers, void *fxsave)
#else
int vmexit(pcpuinfo currentcpuinfo, UINT64 *registers, void *fxsave)
#endif
{
if (currentcpuinfo==NULL)
{
nosendchar[getAPICID()]=0;
sendstringf("currentcpuinfo==NULL");
while (1);
}
if (currentcpuinfo->vmxdata.runningvmx)
{
nosendchar[getAPICID()]=1;
return handleVMEvent(currentcpuinfo, (VMRegisters*)registers, fxsave);
}
if (hasUnrestrictedSupport) //do this till I have added support for all efer read spots
{
//currentcpuinfo->efer=vmread(vm_guest_IA32_EFER);
currentcpuinfo->guestCR0=vmread(vm_guest_cr0);
//currentcpuinfo->guestCR4=vmread(vm_guest_cr4);
}
//if (ISPAGING(currentcpuinfo)==1)
// currentcpuinfo->guestCR3=vmread(vm_guest_cr3);
// nosendchar[getAPICID()]=1;
//return handleVMEvent(currentcpuinfo, (VMRegisters*)registers, fxsave);
int skip=0;
vmeventcount++;
/*
//check if it's a (dos)timer event
if ((vmread(vm_exit_reason)==0) && (vmread(vm_exit_interruptioninfo)==0x80000b0d) && (vmread(vm_idtvector_information)==0x80000008))
{
return handleVMEvent(currentcpuinfo, (VMRegisters*)registers, fxsave);
}
//check if it's a pre-emptiontimer event
if (vmread(vm_exit_reason)==vm_exit_vmx_preemptiontimer_reachedzero)
{
return handleVMEvent(currentcpuinfo, (VMRegisters*)registers, fxsave);
}
*/
int result;
#ifndef DEBUG
volatile int wait=1; //debug var
// currentdisplayline=currentcpuinfo->cpunr+1;
// currentdisplayrow=0;
// displayline("%d: %d:%x (%x,%x) \n",currentcpuinfo->cpunr,vmeventcount,vmread(vm_exit_reason),vmread(vm_guest_cs),vmread(vm_guest_rip));
nosendchar[getAPICID()]=1;
result=handleVMEvent(currentcpuinfo, (VMRegisters*)registers, fxsave);
if (currentcpuinfo->NMIOccured==2) //nmi occured but no NMI window support
{
currentcpuinfo->NMIOccured=0;
return raiseNMI();
}
if ((result!=0) && ((result >> 8) != 0xce) )//on release, if an unexpected event happens, just fail the instruction and hope the OS won't make a too big mess out of it
{
while (wait) ;
return raiseInvalidOpcodeException(currentcpuinfo);
}
else
return result;
#else
//nosendchar[getAPICID()]=0;
//sendstringf("%x:%x\n",vmread(vm_guest_cs),vmread(vm_guest_rip));
//nosendchar[getAPICID()]=1;
#endif
UINT64 initialcount UNUSED;
//char lastevent[15];
int userbreak=0;
//DWORD before=*tocheck;
nosendchar[getAPICID()]=0;
//sendstring("vmexit\n\r");
initialcount=1;
//_cpuid(&a,&b,&c,&d);
/*
if (a)
{
userbreak=1;
nosendchar[getAPICID()]=1;
}
*/
if (vmread(vm_pending_debug_exceptions))
userbreak=1;
/*
if (vmread(0x4402)==30)
{
nosendchar[getAPICID()]=1;
result=handleVMEvent(currentcpuinfo, (VMRegisters*)registers);
return result;
}*/
if (IntHandlerDebug==0)
{
enableserial();
char b=getchar();
if (b=='b')
userbreak=1;
}
char command;
//stop all timers
/*
nosendchar[getAPICID()]=0;
if (i==0)
printstring("-",0,2,15,0);
else
if (i==1)
printstring("\\",0,2,15,0);
else
if (i==2)
printstring("|",0,2,15,0);
else
if (i==3)
printstring("/",0,2,15,0);
else
if (i==4)
printstring("-",0,2,15,0);
else
if (i==5)
printstring("\\",0,2,15,0);
else
if (i==6)
printstring("|",0,2,15,0);
else
if (i==7)
printstring("/",0,2,15,0);
i++;
if (i==8)
{
i=0;
rotations++;
if (rotations==500)
{
sendstring("+");
rotations=0;
}
}
twister=i;
*/
/*
nosendchar[getAPICID()]=1;
result=handleVMEvent(currentcpuinfo, (VMRegisters*)registers);
nosendchar[getAPICID()]=0;
//sendstring("Handled event\n\r");
return result;
*/
//if (vmread(0x6808)==0x2b0000)
// userbreak=1;
//if (DidHLT==0)
//debugbreak();
// showall=1;
//if (currentcpuinfo->cpunr)
// showall=1;
if (userbreak)
{
sendstring("user wants to break\n\r");
verbosity=10;
}
else
if ((vmread(0x4402)==0) && ((vmread(vm_exit_interruptioninfo) & 0x8000000f)==0x80000001) )
{
//int1 bp
//sendstringf("Int 1 bp");
}
else
//if (!showall)
{
switch (vmread(vm_exit_reason))
{
case vm_exit_vmresume:
//skip=1;
break;
case vm_exit_vmcall:
//skip=currentcpuinfo->cpunr==0;
//sendstring("VMCALL\n");
skip=1;
break;
case vm_exit_vmread:
//skip=1;
break;
case vm_exit_vmptrld:
//
break;